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gecko-dev/editor/libeditor/html/nsHTMLEditRules.cpp
Ehsan Akhgari 1b83407ce9 Bug 927728 - Part 1: Replace PRUnichar with char16_t; r=roc 
This patch was automatically generated by the following script:

#!/bin/bash
# Command to convert PRUnichar to char16_t

function convert() {
echo "Converting $1 to $2..."
find . ! -wholename "*nsprpub*" \
       ! -wholename "*security/nss*" \
       ! -wholename "*modules/libmar*" \
       ! -wholename "*/.hg*" \
       ! -wholename "obj-ff-dbg*" \
       ! -name prtypes.h \
       ! -name Char16.h \
         -type f \
      \( -iname "*.cpp" \
         -o -iname "*.h" \
         -o -iname "*.c" \
         -o -iname "*.cc" \
         -o -iname "*.idl" \
         -o -iname "*.ipdl" \
         -o -iname "*.ipdlh" \
         -o -iname "*.mm" \) | \
    xargs -n 1 sed -i -e "s/\b$1\b/$2/g"
}

convert PRUnichar char16_t
2014-01-04 10:02:17 -05:00

9430 lines
325 KiB
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=79: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <stdlib.h>
#include "mozilla/Assertions.h"
#include "mozilla/MathAlgorithms.h"
#include "mozilla/Preferences.h"
#include "mozilla/Selection.h"
#include "mozilla/dom/Element.h"
#include "mozilla/mozalloc.h"
#include "nsAString.h"
#include "nsAlgorithm.h"
#include "nsCOMArray.h"
#include "nsCRT.h"
#include "nsCRTGlue.h"
#include "nsComponentManagerUtils.h"
#include "nsContentUtils.h"
#include "nsDebug.h"
#include "nsEditProperty.h"
#include "nsEditor.h"
#include "nsEditorUtils.h"
#include "nsError.h"
#include "nsGkAtoms.h"
#include "nsHTMLCSSUtils.h"
#include "nsHTMLEditRules.h"
#include "nsHTMLEditUtils.h"
#include "nsHTMLEditor.h"
#include "nsIAtom.h"
#include "nsIContent.h"
#include "nsIContentIterator.h"
#include "nsID.h"
#include "nsIDOMCharacterData.h"
#include "nsIDOMDocument.h"
#include "nsIDOMElement.h"
#include "nsIDOMNode.h"
#include "nsIDOMRange.h"
#include "nsIDOMText.h"
#include "nsIHTMLAbsPosEditor.h"
#include "nsIHTMLDocument.h"
#include "nsINode.h"
#include "nsISelection.h"
#include "nsISelectionPrivate.h"
#include "nsLiteralString.h"
#include "nsPlaintextEditor.h"
#include "nsRange.h"
#include "nsReadableUtils.h"
#include "nsString.h"
#include "nsStringFwd.h"
#include "nsTArray.h"
#include "nsTextEditUtils.h"
#include "nsThreadUtils.h"
#include "nsUnicharUtils.h"
#include "nsWSRunObject.h"
#include <algorithm>
class nsISupports;
class nsRulesInfo;
using namespace mozilla;
//const static char* kMOZEditorBogusNodeAttr="MOZ_EDITOR_BOGUS_NODE";
//const static char* kMOZEditorBogusNodeValue="TRUE";
enum
{
kLonely = 0,
kPrevSib = 1,
kNextSib = 2,
kBothSibs = 3
};
/********************************************************
* first some helpful functors we will use
********************************************************/
static bool IsBlockNode(nsIDOMNode* node)
{
bool isBlock (false);
nsHTMLEditor::NodeIsBlockStatic(node, &isBlock);
return isBlock;
}
static bool IsInlineNode(nsIDOMNode* node)
{
return !IsBlockNode(node);
}
static bool
IsStyleCachePreservingAction(EditAction action)
{
return action == EditAction::deleteSelection ||
action == EditAction::insertBreak ||
action == EditAction::makeList ||
action == EditAction::indent ||
action == EditAction::outdent ||
action == EditAction::align ||
action == EditAction::makeBasicBlock ||
action == EditAction::removeList ||
action == EditAction::makeDefListItem ||
action == EditAction::insertElement ||
action == EditAction::insertQuotation;
}
class nsTableCellAndListItemFunctor : public nsBoolDomIterFunctor
{
public:
virtual bool operator()(nsIDOMNode* aNode) // used to build list of all li's, td's & th's iterator covers
{
if (nsHTMLEditUtils::IsTableCell(aNode)) return true;
if (nsHTMLEditUtils::IsListItem(aNode)) return true;
return false;
}
};
class nsBRNodeFunctor : public nsBoolDomIterFunctor
{
public:
virtual bool operator()(nsIDOMNode* aNode)
{
if (nsTextEditUtils::IsBreak(aNode)) return true;
return false;
}
};
class nsEmptyEditableFunctor : public nsBoolDomIterFunctor
{
public:
nsEmptyEditableFunctor(nsHTMLEditor* editor) : mHTMLEditor(editor) {}
virtual bool operator()(nsIDOMNode* aNode)
{
if (mHTMLEditor->IsEditable(aNode) &&
(nsHTMLEditUtils::IsListItem(aNode) ||
nsHTMLEditUtils::IsTableCellOrCaption(aNode)))
{
bool bIsEmptyNode;
nsresult res = mHTMLEditor->IsEmptyNode(aNode, &bIsEmptyNode, false, false);
NS_ENSURE_SUCCESS(res, false);
if (bIsEmptyNode)
return true;
}
return false;
}
protected:
nsHTMLEditor* mHTMLEditor;
};
class nsEditableTextFunctor : public nsBoolDomIterFunctor
{
public:
nsEditableTextFunctor(nsHTMLEditor* editor) : mHTMLEditor(editor) {}
virtual bool operator()(nsIDOMNode* aNode)
{
if (nsEditor::IsTextNode(aNode) && mHTMLEditor->IsEditable(aNode))
{
return true;
}
return false;
}
protected:
nsHTMLEditor* mHTMLEditor;
};
/********************************************************
* Constructor/Destructor
********************************************************/
nsHTMLEditRules::nsHTMLEditRules() :
mDocChangeRange(nullptr)
,mListenerEnabled(true)
,mReturnInEmptyLIKillsList(true)
,mDidDeleteSelection(false)
,mDidRangedDelete(false)
,mRestoreContentEditableCount(false)
,mUtilRange(nullptr)
,mJoinOffset(0)
{
// populate mCachedStyles
mCachedStyles[0] = StyleCache(nsEditProperty::b, EmptyString(), EmptyString());
mCachedStyles[1] = StyleCache(nsEditProperty::i, EmptyString(), EmptyString());
mCachedStyles[2] = StyleCache(nsEditProperty::u, EmptyString(), EmptyString());
mCachedStyles[3] = StyleCache(nsEditProperty::font, NS_LITERAL_STRING("face"), EmptyString());
mCachedStyles[4] = StyleCache(nsEditProperty::font, NS_LITERAL_STRING("size"), EmptyString());
mCachedStyles[5] = StyleCache(nsEditProperty::font, NS_LITERAL_STRING("color"), EmptyString());
mCachedStyles[6] = StyleCache(nsEditProperty::tt, EmptyString(), EmptyString());
mCachedStyles[7] = StyleCache(nsEditProperty::em, EmptyString(), EmptyString());
mCachedStyles[8] = StyleCache(nsEditProperty::strong, EmptyString(), EmptyString());
mCachedStyles[9] = StyleCache(nsEditProperty::dfn, EmptyString(), EmptyString());
mCachedStyles[10] = StyleCache(nsEditProperty::code, EmptyString(), EmptyString());
mCachedStyles[11] = StyleCache(nsEditProperty::samp, EmptyString(), EmptyString());
mCachedStyles[12] = StyleCache(nsEditProperty::var, EmptyString(), EmptyString());
mCachedStyles[13] = StyleCache(nsEditProperty::cite, EmptyString(), EmptyString());
mCachedStyles[14] = StyleCache(nsEditProperty::abbr, EmptyString(), EmptyString());
mCachedStyles[15] = StyleCache(nsEditProperty::acronym, EmptyString(), EmptyString());
mCachedStyles[16] = StyleCache(nsEditProperty::cssBackgroundColor, EmptyString(), EmptyString());
mCachedStyles[17] = StyleCache(nsEditProperty::sub, EmptyString(), EmptyString());
mCachedStyles[18] = StyleCache(nsEditProperty::sup, EmptyString(), EmptyString());
mRangeItem = new nsRangeStore();
}
nsHTMLEditRules::~nsHTMLEditRules()
{
// remove ourselves as a listener to edit actions
// In some cases, we have already been removed by
// ~nsHTMLEditor, in which case we will get a null pointer here
// which we ignore. But this allows us to add the ability to
// switch rule sets on the fly if we want.
if (mHTMLEditor)
mHTMLEditor->RemoveEditActionListener(this);
}
/********************************************************
* XPCOM Cruft
********************************************************/
NS_IMPL_ADDREF_INHERITED(nsHTMLEditRules, nsTextEditRules)
NS_IMPL_RELEASE_INHERITED(nsHTMLEditRules, nsTextEditRules)
NS_IMPL_QUERY_INTERFACE_INHERITED1(nsHTMLEditRules, nsTextEditRules, nsIEditActionListener)
/********************************************************
* Public methods
********************************************************/
NS_IMETHODIMP
nsHTMLEditRules::Init(nsPlaintextEditor *aEditor)
{
mHTMLEditor = static_cast<nsHTMLEditor*>(aEditor);
nsresult res;
// call through to base class Init
res = nsTextEditRules::Init(aEditor);
NS_ENSURE_SUCCESS(res, res);
// cache any prefs we care about
static const char kPrefName[] =
"editor.html.typing.returnInEmptyListItemClosesList";
nsAdoptingCString returnInEmptyLIKillsList =
Preferences::GetCString(kPrefName);
// only when "false", becomes FALSE. Otherwise (including empty), TRUE.
// XXX Why was this pref designed as a string and not bool?
mReturnInEmptyLIKillsList = !returnInEmptyLIKillsList.EqualsLiteral("false");
// make a utility range for use by the listenter
nsCOMPtr<nsINode> node = mHTMLEditor->GetRoot();
if (!node) {
node = mHTMLEditor->GetDocument();
}
NS_ENSURE_STATE(node);
mUtilRange = new nsRange(node);
// set up mDocChangeRange to be whole doc
// temporarily turn off rules sniffing
nsAutoLockRulesSniffing lockIt((nsTextEditRules*)this);
if (!mDocChangeRange) {
mDocChangeRange = new nsRange(node);
}
if (node->IsElement()) {
ErrorResult rv;
mDocChangeRange->SelectNode(*node, rv);
res = AdjustSpecialBreaks(node);
NS_ENSURE_SUCCESS(res, res);
}
// add ourselves as a listener to edit actions
res = mHTMLEditor->AddEditActionListener(this);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::DetachEditor()
{
if (mHTMLEditor) {
mHTMLEditor->RemoveEditActionListener(this);
}
mHTMLEditor = nullptr;
return nsTextEditRules::DetachEditor();
}
NS_IMETHODIMP
nsHTMLEditRules::BeforeEdit(EditAction action,
nsIEditor::EDirection aDirection)
{
if (mLockRulesSniffing) return NS_OK;
nsAutoLockRulesSniffing lockIt((nsTextEditRules*)this);
mDidExplicitlySetInterline = false;
if (!mActionNesting++)
{
// clear our flag about if just deleted a range
mDidRangedDelete = false;
// remember where our selection was before edit action took place:
// get selection
nsCOMPtr<nsISelection> selection;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
// get the selection start location
nsCOMPtr<nsIDOMNode> selStartNode, selEndNode;
int32_t selOffset;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(selection, getter_AddRefs(selStartNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
mRangeItem->startNode = selStartNode;
mRangeItem->startOffset = selOffset;
// get the selection end location
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetEndNodeAndOffset(selection, getter_AddRefs(selEndNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
mRangeItem->endNode = selEndNode;
mRangeItem->endOffset = selOffset;
// register this range with range updater to track this as we perturb the doc
NS_ENSURE_STATE(mHTMLEditor);
(mHTMLEditor->mRangeUpdater).RegisterRangeItem(mRangeItem);
// clear deletion state bool
mDidDeleteSelection = false;
// clear out mDocChangeRange and mUtilRange
if(mDocChangeRange)
{
// clear out our accounting of what changed
mDocChangeRange->Reset();
}
if(mUtilRange)
{
// ditto for mUtilRange.
mUtilRange->Reset();
}
// remember current inline styles for deletion and normal insertion operations
if (action == EditAction::insertText ||
action == EditAction::insertIMEText ||
action == EditAction::deleteSelection ||
IsStyleCachePreservingAction(action)) {
nsCOMPtr<nsIDOMNode> selNode = selStartNode;
if (aDirection == nsIEditor::eNext)
selNode = selEndNode;
res = CacheInlineStyles(selNode);
NS_ENSURE_SUCCESS(res, res);
}
// Stabilize the document against contenteditable count changes
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIDOMDocument> doc = mHTMLEditor->GetDOMDocument();
NS_ENSURE_TRUE(doc, NS_ERROR_NOT_INITIALIZED);
nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(doc);
NS_ENSURE_TRUE(htmlDoc, NS_ERROR_FAILURE);
if (htmlDoc->GetEditingState() == nsIHTMLDocument::eContentEditable) {
htmlDoc->ChangeContentEditableCount(nullptr, +1);
mRestoreContentEditableCount = true;
}
// check that selection is in subtree defined by body node
ConfirmSelectionInBody();
// let rules remember the top level action
mTheAction = action;
}
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::AfterEdit(EditAction action,
nsIEditor::EDirection aDirection)
{
if (mLockRulesSniffing) return NS_OK;
nsAutoLockRulesSniffing lockIt(this);
NS_PRECONDITION(mActionNesting>0, "bad action nesting!");
nsresult res = NS_OK;
if (!--mActionNesting)
{
// do all the tricky stuff
res = AfterEditInner(action, aDirection);
// free up selectionState range item
NS_ENSURE_STATE(mHTMLEditor);
(mHTMLEditor->mRangeUpdater).DropRangeItem(mRangeItem);
// Reset the contenteditable count to its previous value
if (mRestoreContentEditableCount) {
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIDOMDocument> doc = mHTMLEditor->GetDOMDocument();
NS_ENSURE_TRUE(doc, NS_ERROR_NOT_INITIALIZED);
nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(doc);
NS_ENSURE_TRUE(htmlDoc, NS_ERROR_FAILURE);
if (htmlDoc->GetEditingState() == nsIHTMLDocument::eContentEditable) {
htmlDoc->ChangeContentEditableCount(nullptr, -1);
}
mRestoreContentEditableCount = false;
}
}
return res;
}
nsresult
nsHTMLEditRules::AfterEditInner(EditAction action,
nsIEditor::EDirection aDirection)
{
ConfirmSelectionInBody();
if (action == EditAction::ignore) return NS_OK;
nsCOMPtr<nsISelection>selection;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
nsCOMPtr<nsIDOMNode> rangeStartParent, rangeEndParent;
int32_t rangeStartOffset = 0, rangeEndOffset = 0;
// do we have a real range to act on?
bool bDamagedRange = false;
if (mDocChangeRange)
{
mDocChangeRange->GetStartContainer(getter_AddRefs(rangeStartParent));
mDocChangeRange->GetEndContainer(getter_AddRefs(rangeEndParent));
mDocChangeRange->GetStartOffset(&rangeStartOffset);
mDocChangeRange->GetEndOffset(&rangeEndOffset);
if (rangeStartParent && rangeEndParent)
bDamagedRange = true;
}
if (bDamagedRange && !((action == EditAction::undo) || (action == EditAction::redo)))
{
// don't let any txns in here move the selection around behind our back.
// Note that this won't prevent explicit selection setting from working.
NS_ENSURE_STATE(mHTMLEditor);
nsAutoTxnsConserveSelection dontSpazMySelection(mHTMLEditor);
// expand the "changed doc range" as needed
res = PromoteRange(mDocChangeRange, action);
NS_ENSURE_SUCCESS(res, res);
// if we did a ranged deletion, make sure we have a place to put caret.
// Note we only want to do this if the overall operation was deletion,
// not if deletion was done along the way for EditAction::loadHTML, EditAction::insertText, etc.
// That's why this is here rather than DidDeleteSelection().
if ((action == EditAction::deleteSelection) && mDidRangedDelete)
{
res = InsertBRIfNeeded(selection);
NS_ENSURE_SUCCESS(res, res);
}
// add in any needed <br>s, and remove any unneeded ones.
res = AdjustSpecialBreaks();
NS_ENSURE_SUCCESS(res, res);
// merge any adjacent text nodes
if ( (action != EditAction::insertText &&
action != EditAction::insertIMEText) )
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CollapseAdjacentTextNodes(mDocChangeRange);
NS_ENSURE_SUCCESS(res, res);
}
// clean up any empty nodes in the selection
res = RemoveEmptyNodes();
NS_ENSURE_SUCCESS(res, res);
// attempt to transform any unneeded nbsp's into spaces after doing various operations
if ((action == EditAction::insertText) ||
(action == EditAction::insertIMEText) ||
(action == EditAction::deleteSelection) ||
(action == EditAction::insertBreak) ||
(action == EditAction::htmlPaste ||
(action == EditAction::loadHTML)))
{
res = AdjustWhitespace(selection);
NS_ENSURE_SUCCESS(res, res);
// also do this for original selection endpoints.
NS_ENSURE_STATE(mHTMLEditor);
nsWSRunObject(mHTMLEditor, mRangeItem->startNode,
mRangeItem->startOffset).AdjustWhitespace();
// we only need to handle old selection endpoint if it was different from start
if (mRangeItem->startNode != mRangeItem->endNode ||
mRangeItem->startOffset != mRangeItem->endOffset) {
NS_ENSURE_STATE(mHTMLEditor);
nsWSRunObject(mHTMLEditor, mRangeItem->endNode,
mRangeItem->endOffset).AdjustWhitespace();
}
}
// if we created a new block, make sure selection lands in it
if (mNewBlock)
{
res = PinSelectionToNewBlock(selection);
mNewBlock = 0;
}
// adjust selection for insert text, html paste, and delete actions
if ((action == EditAction::insertText) ||
(action == EditAction::insertIMEText) ||
(action == EditAction::deleteSelection) ||
(action == EditAction::insertBreak) ||
(action == EditAction::htmlPaste ||
(action == EditAction::loadHTML)))
{
res = AdjustSelection(selection, aDirection);
NS_ENSURE_SUCCESS(res, res);
}
// check for any styles which were removed inappropriately
if (action == EditAction::insertText ||
action == EditAction::insertIMEText ||
action == EditAction::deleteSelection ||
IsStyleCachePreservingAction(action)) {
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mTypeInState->UpdateSelState(selection);
res = ReapplyCachedStyles();
NS_ENSURE_SUCCESS(res, res);
ClearCachedStyles();
}
}
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->HandleInlineSpellCheck(action, selection,
mRangeItem->startNode,
mRangeItem->startOffset,
rangeStartParent, rangeStartOffset,
rangeEndParent, rangeEndOffset);
NS_ENSURE_SUCCESS(res, res);
// detect empty doc
res = CreateBogusNodeIfNeeded(selection);
// adjust selection HINT if needed
NS_ENSURE_SUCCESS(res, res);
if (!mDidExplicitlySetInterline)
{
res = CheckInterlinePosition(selection);
}
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillDoAction(Selection* aSelection,
nsRulesInfo* aInfo,
bool* aCancel,
bool* aHandled)
{
MOZ_ASSERT(aInfo && aCancel && aHandled);
*aCancel = false;
*aHandled = false;
// my kingdom for dynamic cast
nsTextRulesInfo *info = static_cast<nsTextRulesInfo*>(aInfo);
// Deal with actions for which we don't need to check whether the selection is
// editable.
if (info->action == EditAction::outputText ||
info->action == EditAction::undo ||
info->action == EditAction::redo) {
return nsTextEditRules::WillDoAction(aSelection, aInfo, aCancel, aHandled);
}
// Nothing to do if there's no selection to act on
if (!aSelection) {
return NS_OK;
}
NS_ENSURE_TRUE(aSelection->GetRangeCount(), NS_OK);
nsRefPtr<nsRange> range = aSelection->GetRangeAt(0);
nsCOMPtr<nsINode> selStartNode = range->GetStartParent();
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsModifiableNode(selStartNode)) {
*aCancel = true;
return NS_OK;
}
nsCOMPtr<nsINode> selEndNode = range->GetEndParent();
if (selStartNode != selEndNode) {
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsModifiableNode(selEndNode)) {
*aCancel = true;
return NS_OK;
}
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsModifiableNode(range->GetCommonAncestor())) {
*aCancel = true;
return NS_OK;
}
}
switch (info->action) {
case EditAction::insertText:
case EditAction::insertIMEText:
return WillInsertText(info->action, aSelection, aCancel, aHandled,
info->inString, info->outString, info->maxLength);
case EditAction::loadHTML:
return WillLoadHTML(aSelection, aCancel);
case EditAction::insertBreak:
return WillInsertBreak(aSelection, aCancel, aHandled);
case EditAction::deleteSelection:
return WillDeleteSelection(aSelection, info->collapsedAction,
info->stripWrappers, aCancel, aHandled);
case EditAction::makeList:
return WillMakeList(aSelection, info->blockType, info->entireList,
info->bulletType, aCancel, aHandled);
case EditAction::indent:
return WillIndent(aSelection, aCancel, aHandled);
case EditAction::outdent:
return WillOutdent(aSelection, aCancel, aHandled);
case EditAction::setAbsolutePosition:
return WillAbsolutePosition(aSelection, aCancel, aHandled);
case EditAction::removeAbsolutePosition:
return WillRemoveAbsolutePosition(aSelection, aCancel, aHandled);
case EditAction::align:
return WillAlign(aSelection, info->alignType, aCancel, aHandled);
case EditAction::makeBasicBlock:
return WillMakeBasicBlock(aSelection, info->blockType, aCancel, aHandled);
case EditAction::removeList:
return WillRemoveList(aSelection, info->bOrdered, aCancel, aHandled);
case EditAction::makeDefListItem:
return WillMakeDefListItem(aSelection, info->blockType, info->entireList,
aCancel, aHandled);
case EditAction::insertElement:
return WillInsert(aSelection, aCancel);
case EditAction::decreaseZIndex:
return WillRelativeChangeZIndex(aSelection, -1, aCancel, aHandled);
case EditAction::increaseZIndex:
return WillRelativeChangeZIndex(aSelection, 1, aCancel, aHandled);
default:
return nsTextEditRules::WillDoAction(aSelection, aInfo,
aCancel, aHandled);
}
}
NS_IMETHODIMP
nsHTMLEditRules::DidDoAction(nsISelection *aSelection,
nsRulesInfo *aInfo, nsresult aResult)
{
nsTextRulesInfo *info = static_cast<nsTextRulesInfo*>(aInfo);
switch (info->action)
{
case EditAction::insertBreak:
return DidInsertBreak(aSelection, aResult);
case EditAction::deleteSelection:
return DidDeleteSelection(aSelection, info->collapsedAction, aResult);
case EditAction::makeBasicBlock:
case EditAction::indent:
case EditAction::outdent:
case EditAction::align:
return DidMakeBasicBlock(aSelection, aInfo, aResult);
case EditAction::setAbsolutePosition: {
nsresult rv = DidMakeBasicBlock(aSelection, aInfo, aResult);
NS_ENSURE_SUCCESS(rv, rv);
return DidAbsolutePosition();
}
default:
// pass thru to nsTextEditRules
return nsTextEditRules::DidDoAction(aSelection, aInfo, aResult);
}
}
nsresult
nsHTMLEditRules::GetListState(bool *aMixed, bool *aOL, bool *aUL, bool *aDL)
{
NS_ENSURE_TRUE(aMixed && aOL && aUL && aDL, NS_ERROR_NULL_POINTER);
*aMixed = false;
*aOL = false;
*aUL = false;
*aDL = false;
bool bNonList = false;
nsCOMArray<nsIDOMNode> arrayOfNodes;
nsresult res = GetListActionNodes(arrayOfNodes, false, true);
NS_ENSURE_SUCCESS(res, res);
// Examine list type for nodes in selection.
int32_t listCount = arrayOfNodes.Count();
for (int32_t i = listCount - 1; i >= 0; --i) {
nsIDOMNode* curDOMNode = arrayOfNodes[i];
nsCOMPtr<dom::Element> curElement = do_QueryInterface(curDOMNode);
if (!curElement) {
bNonList = true;
} else if (curElement->IsHTML(nsGkAtoms::ul)) {
*aUL = true;
} else if (curElement->IsHTML(nsGkAtoms::ol)) {
*aOL = true;
} else if (curElement->IsHTML(nsGkAtoms::li)) {
if (dom::Element* parent = curElement->GetParentElement()) {
if (parent->IsHTML(nsGkAtoms::ul)) {
*aUL = true;
} else if (parent->IsHTML(nsGkAtoms::ol)) {
*aOL = true;
}
}
} else if (curElement->IsHTML(nsGkAtoms::dl) ||
curElement->IsHTML(nsGkAtoms::dt) ||
curElement->IsHTML(nsGkAtoms::dd)) {
*aDL = true;
} else {
bNonList = true;
}
}
// hokey arithmetic with booleans
if ((*aUL + *aOL + *aDL + bNonList) > 1) {
*aMixed = true;
}
return NS_OK;
}
nsresult
nsHTMLEditRules::GetListItemState(bool *aMixed, bool *aLI, bool *aDT, bool *aDD)
{
NS_ENSURE_TRUE(aMixed && aLI && aDT && aDD, NS_ERROR_NULL_POINTER);
*aMixed = false;
*aLI = false;
*aDT = false;
*aDD = false;
bool bNonList = false;
nsCOMArray<nsIDOMNode> arrayOfNodes;
nsresult res = GetListActionNodes(arrayOfNodes, false, true);
NS_ENSURE_SUCCESS(res, res);
// examine list type for nodes in selection
int32_t listCount = arrayOfNodes.Count();
for (int32_t i = listCount - 1; i >= 0; --i) {
nsIDOMNode* curNode = arrayOfNodes[i];
nsCOMPtr<dom::Element> element = do_QueryInterface(curNode);
if (!element) {
bNonList = true;
} else if (element->IsHTML(nsGkAtoms::ul) ||
element->IsHTML(nsGkAtoms::ol) ||
element->IsHTML(nsGkAtoms::li)) {
*aLI = true;
} else if (element->IsHTML(nsGkAtoms::dt)) {
*aDT = true;
} else if (element->IsHTML(nsGkAtoms::dd)) {
*aDD = true;
} else if (element->IsHTML(nsGkAtoms::dl)) {
// need to look inside dl and see which types of items it has
bool bDT, bDD;
GetDefinitionListItemTypes(element, &bDT, &bDD);
*aDT |= bDT;
*aDD |= bDD;
} else {
bNonList = true;
}
}
// hokey arithmetic with booleans
if ( (*aDT + *aDD + bNonList) > 1) *aMixed = true;
return NS_OK;
}
nsresult
nsHTMLEditRules::GetAlignment(bool *aMixed, nsIHTMLEditor::EAlignment *aAlign)
{
// for now, just return first alignment. we'll lie about
// if it's mixed. This is for efficiency
// given that our current ui doesn't care if it's mixed.
// cmanske: NOT TRUE! We would like to pay attention to mixed state
// in Format | Align submenu!
// this routine assumes that alignment is done ONLY via divs
// default alignment is left
NS_ENSURE_TRUE(aMixed && aAlign, NS_ERROR_NULL_POINTER);
*aMixed = false;
*aAlign = nsIHTMLEditor::eLeft;
// get selection
nsCOMPtr<nsISelection>selection;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
// get selection location
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIDOMElement> rootElem = do_QueryInterface(mHTMLEditor->GetRoot());
NS_ENSURE_TRUE(rootElem, NS_ERROR_FAILURE);
int32_t offset, rootOffset;
nsCOMPtr<nsIDOMNode> parent = nsEditor::GetNodeLocation(rootElem, &rootOffset);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(selection, getter_AddRefs(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
// is the selection collapsed?
nsCOMPtr<nsIDOMNode> nodeToExamine;
if (selection->Collapsed()) {
// if it is, we want to look at 'parent' and its ancestors
// for divs with alignment on them
nodeToExamine = parent;
}
else if (!mHTMLEditor) {
return NS_ERROR_UNEXPECTED;
}
else if (mHTMLEditor->IsTextNode(parent))
{
// if we are in a text node, then that is the node of interest
nodeToExamine = parent;
}
else if (nsEditor::NodeIsType(parent, nsEditProperty::html) &&
offset == rootOffset)
{
// if we have selected the body, let's look at the first editable node
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetNextNode(parent, offset, true, address_of(nodeToExamine));
}
else
{
nsCOMArray<nsIDOMRange> arrayOfRanges;
res = GetPromotedRanges(selection, arrayOfRanges, EditAction::align);
NS_ENSURE_SUCCESS(res, res);
// use these ranges to construct a list of nodes to act on.
nsCOMArray<nsIDOMNode> arrayOfNodes;
res = GetNodesForOperation(arrayOfRanges, arrayOfNodes,
EditAction::align, true);
NS_ENSURE_SUCCESS(res, res);
nodeToExamine = arrayOfNodes.SafeObjectAt(0);
}
NS_ENSURE_TRUE(nodeToExamine, NS_ERROR_NULL_POINTER);
NS_NAMED_LITERAL_STRING(typeAttrName, "align");
nsIAtom *dummyProperty = nullptr;
nsCOMPtr<nsIDOMNode> blockParent;
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->IsBlockNode(nodeToExamine))
blockParent = nodeToExamine;
else {
NS_ENSURE_STATE(mHTMLEditor);
blockParent = mHTMLEditor->GetBlockNodeParent(nodeToExamine);
}
NS_ENSURE_TRUE(blockParent, NS_ERROR_FAILURE);
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->IsCSSEnabled())
{
nsCOMPtr<nsIContent> blockParentContent = do_QueryInterface(blockParent);
NS_ENSURE_STATE(mHTMLEditor);
if (blockParentContent &&
mHTMLEditor->mHTMLCSSUtils->IsCSSEditableProperty(blockParentContent, dummyProperty, &typeAttrName))
{
// we are in CSS mode and we know how to align this element with CSS
nsAutoString value;
// let's get the value(s) of text-align or margin-left/margin-right
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->GetCSSEquivalentToHTMLInlineStyleSet(
blockParentContent, dummyProperty, &typeAttrName, value,
nsHTMLCSSUtils::eComputed);
if (value.EqualsLiteral("center") ||
value.EqualsLiteral("-moz-center") ||
value.EqualsLiteral("auto auto"))
{
*aAlign = nsIHTMLEditor::eCenter;
return NS_OK;
}
if (value.EqualsLiteral("right") ||
value.EqualsLiteral("-moz-right") ||
value.EqualsLiteral("auto 0px"))
{
*aAlign = nsIHTMLEditor::eRight;
return NS_OK;
}
if (value.EqualsLiteral("justify"))
{
*aAlign = nsIHTMLEditor::eJustify;
return NS_OK;
}
*aAlign = nsIHTMLEditor::eLeft;
return NS_OK;
}
}
// check up the ladder for divs with alignment
nsCOMPtr<nsIDOMNode> temp = nodeToExamine;
bool isFirstNodeToExamine = true;
while (nodeToExamine)
{
if (!isFirstNodeToExamine && nsHTMLEditUtils::IsTable(nodeToExamine))
{
// the node to examine is a table and this is not the first node
// we examine; let's break here to materialize the 'inline-block'
// behaviour of html tables regarding to text alignment
return NS_OK;
}
if (nsHTMLEditUtils::SupportsAlignAttr(nodeToExamine))
{
// check for alignment
nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(nodeToExamine);
if (elem)
{
nsAutoString typeAttrVal;
res = elem->GetAttribute(NS_LITERAL_STRING("align"), typeAttrVal);
ToLowerCase(typeAttrVal);
if (NS_SUCCEEDED(res) && typeAttrVal.Length())
{
if (typeAttrVal.EqualsLiteral("center"))
*aAlign = nsIHTMLEditor::eCenter;
else if (typeAttrVal.EqualsLiteral("right"))
*aAlign = nsIHTMLEditor::eRight;
else if (typeAttrVal.EqualsLiteral("justify"))
*aAlign = nsIHTMLEditor::eJustify;
else
*aAlign = nsIHTMLEditor::eLeft;
return res;
}
}
}
isFirstNodeToExamine = false;
res = nodeToExamine->GetParentNode(getter_AddRefs(temp));
if (NS_FAILED(res)) temp = nullptr;
nodeToExamine = temp;
}
return NS_OK;
}
nsIAtom* MarginPropertyAtomForIndent(nsHTMLCSSUtils* aHTMLCSSUtils, nsIDOMNode* aNode) {
nsAutoString direction;
aHTMLCSSUtils->GetComputedProperty(aNode, nsEditProperty::cssDirection, direction);
return direction.EqualsLiteral("rtl") ?
nsEditProperty::cssMarginRight : nsEditProperty::cssMarginLeft;
}
nsresult
nsHTMLEditRules::GetIndentState(bool *aCanIndent, bool *aCanOutdent)
{
NS_ENSURE_TRUE(aCanIndent && aCanOutdent, NS_ERROR_FAILURE);
*aCanIndent = true;
*aCanOutdent = false;
// get selection
nsCOMPtr<nsISelection>selection;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
NS_ENSURE_TRUE(selPriv, NS_ERROR_FAILURE);
// contruct a list of nodes to act on.
nsCOMArray<nsIDOMNode> arrayOfNodes;
res = GetNodesFromSelection(selection, EditAction::indent,
arrayOfNodes, true);
NS_ENSURE_SUCCESS(res, res);
// examine nodes in selection for blockquotes or list elements;
// these we can outdent. Note that we return true for canOutdent
// if *any* of the selection is outdentable, rather than all of it.
int32_t listCount = arrayOfNodes.Count();
int32_t i;
NS_ENSURE_STATE(mHTMLEditor);
bool useCSS = mHTMLEditor->IsCSSEnabled();
for (i=listCount-1; i>=0; i--)
{
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[i];
if (nsHTMLEditUtils::IsNodeThatCanOutdent(curNode))
{
*aCanOutdent = true;
break;
}
else if (useCSS) {
// we are in CSS mode, indentation is done using the margin-left (or margin-right) property
NS_ENSURE_STATE(mHTMLEditor);
nsIAtom* marginProperty = MarginPropertyAtomForIndent(mHTMLEditor->mHTMLCSSUtils, curNode);
nsAutoString value;
// retrieve its specified value
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->GetSpecifiedProperty(curNode, marginProperty, value);
float f;
nsCOMPtr<nsIAtom> unit;
// get its number part and its unit
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->ParseLength(value, &f, getter_AddRefs(unit));
// if the number part is strictly positive, outdent is possible
if (0 < f) {
*aCanOutdent = true;
break;
}
}
}
if (!*aCanOutdent)
{
// if we haven't found something to outdent yet, also check the parents
// of selection endpoints. We might have a blockquote or list item
// in the parent hierarchy.
// gather up info we need for test
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIDOMNode> parent, tmp, root = do_QueryInterface(mHTMLEditor->GetRoot());
NS_ENSURE_TRUE(root, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsISelection> selection;
int32_t selOffset;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
// test start parent hierarchy
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(selection, getter_AddRefs(parent), &selOffset);
NS_ENSURE_SUCCESS(res, res);
while (parent && (parent!=root))
{
if (nsHTMLEditUtils::IsNodeThatCanOutdent(parent))
{
*aCanOutdent = true;
break;
}
tmp=parent;
tmp->GetParentNode(getter_AddRefs(parent));
}
// test end parent hierarchy
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetEndNodeAndOffset(selection, getter_AddRefs(parent), &selOffset);
NS_ENSURE_SUCCESS(res, res);
while (parent && (parent!=root))
{
if (nsHTMLEditUtils::IsNodeThatCanOutdent(parent))
{
*aCanOutdent = true;
break;
}
tmp=parent;
tmp->GetParentNode(getter_AddRefs(parent));
}
}
return res;
}
nsresult
nsHTMLEditRules::GetParagraphState(bool *aMixed, nsAString &outFormat)
{
// This routine is *heavily* tied to our ui choices in the paragraph
// style popup. I can't see a way around that.
NS_ENSURE_TRUE(aMixed, NS_ERROR_NULL_POINTER);
*aMixed = true;
outFormat.Truncate(0);
bool bMixed = false;
// using "x" as an uninitialized value, since "" is meaningful
nsAutoString formatStr(NS_LITERAL_STRING("x"));
nsCOMArray<nsIDOMNode> arrayOfNodes;
nsresult res = GetParagraphFormatNodes(arrayOfNodes, true);
NS_ENSURE_SUCCESS(res, res);
// post process list. We need to replace any block nodes that are not format
// nodes with their content. This is so we only have to look "up" the hierarchy
// to find format nodes, instead of both up and down.
int32_t listCount = arrayOfNodes.Count();
int32_t i;
for (i=listCount-1; i>=0; i--)
{
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[i];
nsAutoString format;
// if it is a known format node we have it easy
if (IsBlockNode(curNode) && !nsHTMLEditUtils::IsFormatNode(curNode))
{
// arrayOfNodes.RemoveObject(curNode);
res = AppendInnerFormatNodes(arrayOfNodes, curNode);
NS_ENSURE_SUCCESS(res, res);
}
}
// we might have an empty node list. if so, find selection parent
// and put that on the list
listCount = arrayOfNodes.Count();
if (!listCount)
{
nsCOMPtr<nsIDOMNode> selNode;
int32_t selOffset;
nsCOMPtr<nsISelection>selection;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(selection, getter_AddRefs(selNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(selNode, NS_ERROR_NULL_POINTER);
arrayOfNodes.AppendObject(selNode);
listCount = 1;
}
// remember root node
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIDOMElement> rootElem = do_QueryInterface(mHTMLEditor->GetRoot());
NS_ENSURE_TRUE(rootElem, NS_ERROR_NULL_POINTER);
// loop through the nodes in selection and examine their paragraph format
for (i=listCount-1; i>=0; i--)
{
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[i];
nsAutoString format;
// if it is a known format node we have it easy
if (nsHTMLEditUtils::IsFormatNode(curNode))
GetFormatString(curNode, format);
else if (IsBlockNode(curNode))
{
// this is a div or some other non-format block.
// we should ignore it. Its children were appended to this list
// by AppendInnerFormatNodes() call above. We will get needed
// info when we examine them instead.
continue;
}
else
{
nsCOMPtr<nsIDOMNode> node, tmp = curNode;
tmp->GetParentNode(getter_AddRefs(node));
while (node)
{
if (node == rootElem)
{
format.Truncate(0);
break;
}
else if (nsHTMLEditUtils::IsFormatNode(node))
{
GetFormatString(node, format);
break;
}
// else keep looking up
tmp = node;
tmp->GetParentNode(getter_AddRefs(node));
}
}
// if this is the first node, we've found, remember it as the format
if (formatStr.EqualsLiteral("x"))
formatStr = format;
// else make sure it matches previously found format
else if (format != formatStr)
{
bMixed = true;
break;
}
}
*aMixed = bMixed;
outFormat = formatStr;
return res;
}
nsresult
nsHTMLEditRules::AppendInnerFormatNodes(nsCOMArray<nsIDOMNode>& aArray,
nsIDOMNode *aNode)
{
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER);
return AppendInnerFormatNodes(aArray, node);
}
nsresult
nsHTMLEditRules::AppendInnerFormatNodes(nsCOMArray<nsIDOMNode>& aArray,
nsINode* aNode)
{
MOZ_ASSERT(aNode);
// we only need to place any one inline inside this node onto
// the list. They are all the same for purposes of determining
// paragraph style. We use foundInline to track this as we are
// going through the children in the loop below.
bool foundInline = false;
for (nsIContent* child = aNode->GetFirstChild();
child;
child = child->GetNextSibling()) {
bool isBlock = IsBlockNode(child->AsDOMNode());
bool isFormat = nsHTMLEditUtils::IsFormatNode(child);
if (isBlock && !isFormat) {
// if it's a div, etc, recurse
AppendInnerFormatNodes(aArray, child);
} else if (isFormat) {
aArray.AppendObject(child->AsDOMNode());
} else if (!foundInline) {
// if this is the first inline we've found, use it
foundInline = true;
aArray.AppendObject(child->AsDOMNode());
}
}
return NS_OK;
}
nsresult
nsHTMLEditRules::GetFormatString(nsIDOMNode *aNode, nsAString &outFormat)
{
NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
if (nsHTMLEditUtils::IsFormatNode(aNode))
{
nsCOMPtr<nsIAtom> atom = nsEditor::GetTag(aNode);
atom->ToString(outFormat);
}
else
outFormat.Truncate();
return NS_OK;
}
/********************************************************
* Protected rules methods
********************************************************/
nsresult
nsHTMLEditRules::WillInsert(nsISelection *aSelection, bool *aCancel)
{
nsresult res = nsTextEditRules::WillInsert(aSelection, aCancel);
NS_ENSURE_SUCCESS(res, res);
// Adjust selection to prevent insertion after a moz-BR.
// this next only works for collapsed selections right now,
// because selection is a pain to work with when not collapsed.
// (no good way to extend start or end of selection), so we ignore
// those types of selections.
if (!aSelection->Collapsed()) {
return NS_OK;
}
// if we are after a mozBR in the same block, then move selection
// to be before it
nsCOMPtr<nsIDOMNode> selNode, priorNode;
int32_t selOffset;
// get the (collapsed) selection location
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(selNode),
&selOffset);
NS_ENSURE_SUCCESS(res, res);
// get prior node
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetPriorHTMLNode(selNode, selOffset,
address_of(priorNode));
if (NS_SUCCEEDED(res) && priorNode && nsTextEditUtils::IsMozBR(priorNode))
{
nsCOMPtr<nsIDOMNode> block1, block2;
if (IsBlockNode(selNode)) {
block1 = selNode;
}
else {
NS_ENSURE_STATE(mHTMLEditor);
block1 = mHTMLEditor->GetBlockNodeParent(selNode);
}
NS_ENSURE_STATE(mHTMLEditor);
block2 = mHTMLEditor->GetBlockNodeParent(priorNode);
if (block1 == block2)
{
// if we are here then the selection is right after a mozBR
// that is in the same block as the selection. We need to move
// the selection start to be before the mozBR.
selNode = nsEditor::GetNodeLocation(priorNode, &selOffset);
res = aSelection->Collapse(selNode,selOffset);
NS_ENSURE_SUCCESS(res, res);
}
}
if (mDidDeleteSelection &&
(mTheAction == EditAction::insertText ||
mTheAction == EditAction::insertIMEText ||
mTheAction == EditAction::deleteSelection)) {
res = ReapplyCachedStyles();
NS_ENSURE_SUCCESS(res, res);
}
// For most actions we want to clear the cached styles, but there are
// exceptions
if (!IsStyleCachePreservingAction(mTheAction)) {
ClearCachedStyles();
}
return NS_OK;
}
nsresult
nsHTMLEditRules::WillInsertText(EditAction aAction,
Selection* aSelection,
bool *aCancel,
bool *aHandled,
const nsAString *inString,
nsAString *outString,
int32_t aMaxLength)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
if (inString->IsEmpty() && aAction != EditAction::insertIMEText) {
// HACK: this is a fix for bug 19395
// I can't outlaw all empty insertions
// because IME transaction depend on them
// There is more work to do to make the
// world safe for IME.
*aCancel = true;
*aHandled = false;
return NS_OK;
}
// initialize out param
*aCancel = false;
*aHandled = true;
nsresult res;
nsCOMPtr<nsIDOMNode> selNode;
int32_t selOffset;
// If the selection isn't collapsed, delete it. Don't delete existing inline
// tags, because we're hopefully going to insert text (bug 787432).
if (!aSelection->Collapsed()) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteSelection(nsIEditor::eNone, nsIEditor::eNoStrip);
NS_ENSURE_SUCCESS(res, res);
}
res = WillInsert(aSelection, aCancel);
NS_ENSURE_SUCCESS(res, res);
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = false;
// we need to get the doc
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIDOMDocument> doc = mHTMLEditor->GetDOMDocument();
NS_ENSURE_TRUE(doc, NS_ERROR_NOT_INITIALIZED);
// for every property that is set, insert a new inline style node
res = CreateStyleForInsertText(aSelection, doc);
NS_ENSURE_SUCCESS(res, res);
// get the (collapsed) selection location
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(selNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
// dont put text in places that can't have it
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsTextNode(selNode) &&
(!mHTMLEditor ||
!mHTMLEditor->CanContainTag(selNode, nsGkAtoms::textTagName))) {
return NS_ERROR_FAILURE;
}
if (aAction == EditAction::insertIMEText) {
// Right now the nsWSRunObject code bails on empty strings, but IME needs
// the InsertTextImpl() call to still happen since empty strings are meaningful there.
if (inString->IsEmpty())
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->InsertTextImpl(*inString, address_of(selNode), &selOffset, doc);
}
else
{
NS_ENSURE_STATE(mHTMLEditor);
nsWSRunObject wsObj(mHTMLEditor, selNode, selOffset);
res = wsObj.InsertText(*inString, address_of(selNode), &selOffset, doc);
}
NS_ENSURE_SUCCESS(res, res);
}
else // aAction == kInsertText
{
// find where we are
nsCOMPtr<nsIDOMNode> curNode = selNode;
int32_t curOffset = selOffset;
// is our text going to be PREformatted?
// We remember this so that we know how to handle tabs.
bool isPRE;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsPreformatted(selNode, &isPRE);
NS_ENSURE_SUCCESS(res, res);
// turn off the edit listener: we know how to
// build the "doc changed range" ourselves, and it's
// must faster to do it once here than to track all
// the changes one at a time.
nsAutoLockListener lockit(&mListenerEnabled);
// don't spaz my selection in subtransactions
NS_ENSURE_STATE(mHTMLEditor);
nsAutoTxnsConserveSelection dontSpazMySelection(mHTMLEditor);
nsAutoString tString(*inString);
const char16_t *unicodeBuf = tString.get();
nsCOMPtr<nsIDOMNode> unused;
int32_t pos = 0;
NS_NAMED_LITERAL_STRING(newlineStr, LFSTR);
// for efficiency, break out the pre case separately. This is because
// its a lot cheaper to search the input string for only newlines than
// it is to search for both tabs and newlines.
if (isPRE || IsPlaintextEditor())
{
while (unicodeBuf && (pos != -1) && (pos < (int32_t)(*inString).Length()))
{
int32_t oldPos = pos;
int32_t subStrLen;
pos = tString.FindChar(nsCRT::LF, oldPos);
if (pos != -1)
{
subStrLen = pos - oldPos;
// if first char is newline, then use just it
if (subStrLen == 0)
subStrLen = 1;
}
else
{
subStrLen = tString.Length() - oldPos;
pos = tString.Length();
}
nsDependentSubstring subStr(tString, oldPos, subStrLen);
// is it a return?
if (subStr.Equals(newlineStr))
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBRImpl(address_of(curNode), &curOffset, address_of(unused), nsIEditor::eNone);
pos++;
}
else
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->InsertTextImpl(subStr, address_of(curNode), &curOffset, doc);
}
NS_ENSURE_SUCCESS(res, res);
}
}
else
{
NS_NAMED_LITERAL_STRING(tabStr, "\t");
NS_NAMED_LITERAL_STRING(spacesStr, " ");
char specialChars[] = {TAB, nsCRT::LF, 0};
while (unicodeBuf && (pos != -1) && (pos < (int32_t)inString->Length()))
{
int32_t oldPos = pos;
int32_t subStrLen;
pos = tString.FindCharInSet(specialChars, oldPos);
if (pos != -1)
{
subStrLen = pos - oldPos;
// if first char is newline, then use just it
if (subStrLen == 0)
subStrLen = 1;
}
else
{
subStrLen = tString.Length() - oldPos;
pos = tString.Length();
}
nsDependentSubstring subStr(tString, oldPos, subStrLen);
NS_ENSURE_STATE(mHTMLEditor);
nsWSRunObject wsObj(mHTMLEditor, curNode, curOffset);
// is it a tab?
if (subStr.Equals(tabStr))
{
res = wsObj.InsertText(spacesStr, address_of(curNode), &curOffset, doc);
NS_ENSURE_SUCCESS(res, res);
pos++;
}
// is it a return?
else if (subStr.Equals(newlineStr))
{
res = wsObj.InsertBreak(address_of(curNode), &curOffset, address_of(unused), nsIEditor::eNone);
NS_ENSURE_SUCCESS(res, res);
pos++;
}
else
{
res = wsObj.InsertText(subStr, address_of(curNode), &curOffset, doc);
NS_ENSURE_SUCCESS(res, res);
}
NS_ENSURE_SUCCESS(res, res);
}
}
nsCOMPtr<nsISelection> selection(aSelection);
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
selPriv->SetInterlinePosition(false);
if (curNode) aSelection->Collapse(curNode, curOffset);
// manually update the doc changed range so that AfterEdit will clean up
// the correct portion of the document.
if (!mDocChangeRange)
{
nsCOMPtr<nsINode> node = do_QueryInterface(selNode);
NS_ENSURE_STATE(node);
mDocChangeRange = new nsRange(node);
}
res = mDocChangeRange->SetStart(selNode, selOffset);
NS_ENSURE_SUCCESS(res, res);
if (curNode)
res = mDocChangeRange->SetEnd(curNode, curOffset);
else
res = mDocChangeRange->SetEnd(selNode, selOffset);
NS_ENSURE_SUCCESS(res, res);
}
return res;
}
nsresult
nsHTMLEditRules::WillLoadHTML(nsISelection *aSelection, bool *aCancel)
{
NS_ENSURE_TRUE(aSelection && aCancel, NS_ERROR_NULL_POINTER);
*aCancel = false;
// Delete mBogusNode if it exists. If we really need one,
// it will be added during post-processing in AfterEditInner().
if (mBogusNode)
{
mEditor->DeleteNode(mBogusNode);
mBogusNode = nullptr;
}
return NS_OK;
}
nsresult
nsHTMLEditRules::WillInsertBreak(Selection* aSelection,
bool* aCancel, bool* aHandled)
{
if (!aSelection || !aCancel || !aHandled) {
return NS_ERROR_NULL_POINTER;
}
// initialize out params
*aCancel = false;
*aHandled = false;
// if the selection isn't collapsed, delete it.
nsresult res = NS_OK;
if (!aSelection->Collapsed()) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteSelection(nsIEditor::eNone, nsIEditor::eStrip);
NS_ENSURE_SUCCESS(res, res);
}
res = WillInsert(aSelection, aCancel);
NS_ENSURE_SUCCESS(res, res);
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = false;
// split any mailcites in the way.
// should we abort this if we encounter table cell boundaries?
if (IsMailEditor()) {
res = SplitMailCites(aSelection, IsPlaintextEditor(), aHandled);
NS_ENSURE_SUCCESS(res, res);
if (*aHandled) {
return NS_OK;
}
}
// smart splitting rules
nsCOMPtr<nsIDOMNode> node;
int32_t offset;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(node),
&offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(node, NS_ERROR_FAILURE);
// do nothing if the node is read-only
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsModifiableNode(node)) {
*aCancel = true;
return NS_OK;
}
// identify the block
nsCOMPtr<nsIDOMNode> blockParent;
if (IsBlockNode(node)) {
blockParent = node;
} else {
NS_ENSURE_STATE(mHTMLEditor);
blockParent = mHTMLEditor->GetBlockNodeParent(node);
}
NS_ENSURE_TRUE(blockParent, NS_ERROR_FAILURE);
// if the active editing host is an inline element, or if the active editing
// host is the block parent itself, just append a br.
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIContent> hostContent = mHTMLEditor->GetActiveEditingHost();
nsCOMPtr<nsIDOMNode> hostNode = do_QueryInterface(hostContent);
if (!nsEditorUtils::IsDescendantOf(blockParent, hostNode)) {
res = StandardBreakImpl(node, offset, aSelection);
NS_ENSURE_SUCCESS(res, res);
*aHandled = true;
return NS_OK;
}
// if block is empty, populate with br. (for example, imagine a div that
// contains the word "text". the user selects "text" and types return.
// "text" is deleted leaving an empty block. we want to put in one br to
// make block have a line. then code further below will put in a second br.)
bool isEmpty;
IsEmptyBlock(blockParent, &isEmpty);
if (isEmpty) {
uint32_t blockLen;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetLengthOfDOMNode(blockParent, blockLen);
NS_ENSURE_SUCCESS(res, res);
nsCOMPtr<nsIDOMNode> brNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(blockParent, blockLen, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
}
nsCOMPtr<nsIDOMNode> listItem = IsInListItem(blockParent);
if (listItem && listItem != hostNode) {
ReturnInListItem(aSelection, listItem, node, offset);
*aHandled = true;
return NS_OK;
} else if (nsHTMLEditUtils::IsHeader(blockParent)) {
// headers: close (or split) header
ReturnInHeader(aSelection, blockParent, node, offset);
*aHandled = true;
return NS_OK;
} else if (nsHTMLEditUtils::IsParagraph(blockParent)) {
// paragraphs: special rules to look for <br>s
res = ReturnInParagraph(aSelection, blockParent, node, offset,
aCancel, aHandled);
NS_ENSURE_SUCCESS(res, res);
// fall through, we may not have handled it in ReturnInParagraph()
}
// if not already handled then do the standard thing
if (!(*aHandled)) {
*aHandled = true;
return StandardBreakImpl(node, offset, aSelection);
}
return NS_OK;
}
nsresult
nsHTMLEditRules::StandardBreakImpl(nsIDOMNode* aNode, int32_t aOffset,
nsISelection* aSelection)
{
nsCOMPtr<nsIDOMNode> brNode;
bool bAfterBlock = false;
bool bBeforeBlock = false;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> node(aNode);
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(aSelection));
if (IsPlaintextEditor()) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(node, aOffset, address_of(brNode));
} else {
NS_ENSURE_STATE(mHTMLEditor);
nsWSRunObject wsObj(mHTMLEditor, node, aOffset);
nsCOMPtr<nsIDOMNode> visNode, linkNode;
int32_t visOffset = 0, newOffset;
WSType wsType;
wsObj.PriorVisibleNode(node, aOffset, address_of(visNode),
&visOffset, &wsType);
if (wsType & WSType::block) {
bAfterBlock = true;
}
wsObj.NextVisibleNode(node, aOffset, address_of(visNode),
&visOffset, &wsType);
if (wsType & WSType::block) {
bBeforeBlock = true;
}
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->IsInLink(node, address_of(linkNode))) {
// split the link
nsCOMPtr<nsIDOMNode> linkParent;
res = linkNode->GetParentNode(getter_AddRefs(linkParent));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep(linkNode, node, aOffset,
&newOffset, true);
NS_ENSURE_SUCCESS(res, res);
// reset {node,aOffset} to the point where link was split
node = linkParent;
aOffset = newOffset;
}
res = wsObj.InsertBreak(address_of(node), &aOffset,
address_of(brNode), nsIEditor::eNone);
}
NS_ENSURE_SUCCESS(res, res);
node = nsEditor::GetNodeLocation(brNode, &aOffset);
NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER);
if (bAfterBlock && bBeforeBlock) {
// we just placed a br between block boundaries. This is the one case
// where we want the selection to be before the br we just placed, as the
// br will be on a new line, rather than at end of prior line.
selPriv->SetInterlinePosition(true);
res = aSelection->Collapse(node, aOffset);
} else {
NS_ENSURE_STATE(mHTMLEditor);
nsWSRunObject wsObj(mHTMLEditor, node, aOffset+1);
nsCOMPtr<nsIDOMNode> secondBR;
int32_t visOffset = 0;
WSType wsType;
wsObj.NextVisibleNode(node, aOffset+1, address_of(secondBR),
&visOffset, &wsType);
if (wsType == WSType::br) {
// the next thing after the break we inserted is another break. Move
// the 2nd break to be the first breaks sibling. This will prevent them
// from being in different inline nodes, which would break
// SetInterlinePosition(). It will also assure that if the user clicks
// away and then clicks back on their new blank line, they will still
// get the style from the line above.
int32_t brOffset;
nsCOMPtr<nsIDOMNode> brParent = nsEditor::GetNodeLocation(secondBR, &brOffset);
if (brParent != node || brOffset != aOffset + 1) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(secondBR, node, aOffset+1);
NS_ENSURE_SUCCESS(res, res);
}
}
// SetInterlinePosition(true) means we want the caret to stick to the
// content on the "right". We want the caret to stick to whatever is past
// the break. This is because the break is on the same line we were on,
// but the next content will be on the following line.
// An exception to this is if the break has a next sibling that is a block
// node. Then we stick to the left to avoid an uber caret.
nsCOMPtr<nsIDOMNode> siblingNode;
brNode->GetNextSibling(getter_AddRefs(siblingNode));
if (siblingNode && IsBlockNode(siblingNode)) {
selPriv->SetInterlinePosition(false);
} else {
selPriv->SetInterlinePosition(true);
}
res = aSelection->Collapse(node, aOffset+1);
}
return res;
}
nsresult
nsHTMLEditRules::DidInsertBreak(nsISelection *aSelection, nsresult aResult)
{
return NS_OK;
}
nsresult
nsHTMLEditRules::SplitMailCites(nsISelection *aSelection, bool aPlaintext, bool *aHandled)
{
NS_ENSURE_TRUE(aSelection && aHandled, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(aSelection));
nsCOMPtr<nsIDOMNode> citeNode, selNode, leftCite, rightCite;
int32_t selOffset, newOffset;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(selNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
res = GetTopEnclosingMailCite(selNode, address_of(citeNode), aPlaintext);
NS_ENSURE_SUCCESS(res, res);
if (citeNode)
{
// If our selection is just before a break, nudge it to be
// just after it. This does two things for us. It saves us the trouble of having to add
// a break here ourselves to preserve the "blockness" of the inline span mailquote
// (in the inline case), and :
// it means the break won't end up making an empty line that happens to be inside a
// mailquote (in either inline or block case).
// The latter can confuse a user if they click there and start typing,
// because being in the mailquote may affect wrapping behavior, or font color, etc.
NS_ENSURE_STATE(mHTMLEditor);
nsWSRunObject wsObj(mHTMLEditor, selNode, selOffset);
nsCOMPtr<nsIDOMNode> visNode;
int32_t visOffset=0;
WSType wsType;
wsObj.NextVisibleNode(selNode, selOffset, address_of(visNode),
&visOffset, &wsType);
if (wsType == WSType::br) {
// ok, we are just before a break. is it inside the mailquote?
int32_t unused;
if (nsEditorUtils::IsDescendantOf(visNode, citeNode, &unused))
{
// it is. so lets reset our selection to be just after it.
NS_ENSURE_STATE(mHTMLEditor);
selNode = mHTMLEditor->GetNodeLocation(visNode, &selOffset);
++selOffset;
}
}
nsCOMPtr<nsIDOMNode> brNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep(citeNode, selNode, selOffset, &newOffset,
true, address_of(leftCite), address_of(rightCite));
NS_ENSURE_SUCCESS(res, res);
res = citeNode->GetParentNode(getter_AddRefs(selNode));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(selNode, newOffset, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
// want selection before the break, and on same line
selPriv->SetInterlinePosition(true);
res = aSelection->Collapse(selNode, newOffset);
NS_ENSURE_SUCCESS(res, res);
// if citeNode wasn't a block, we might also want another break before it.
// We need to examine the content both before the br we just added and also
// just after it. If we don't have another br or block boundary adjacent,
// then we will need a 2nd br added to achieve blank line that user expects.
if (IsInlineNode(citeNode))
{
NS_ENSURE_STATE(mHTMLEditor);
nsWSRunObject wsObj(mHTMLEditor, selNode, newOffset);
nsCOMPtr<nsIDOMNode> visNode;
int32_t visOffset=0;
WSType wsType;
wsObj.PriorVisibleNode(selNode, newOffset, address_of(visNode),
&visOffset, &wsType);
if (wsType == WSType::normalWS || wsType == WSType::text ||
wsType == WSType::special) {
NS_ENSURE_STATE(mHTMLEditor);
nsWSRunObject wsObjAfterBR(mHTMLEditor, selNode, newOffset+1);
wsObjAfterBR.NextVisibleNode(selNode, newOffset+1, address_of(visNode),
&visOffset, &wsType);
if (wsType == WSType::normalWS || wsType == WSType::text ||
wsType == WSType::special) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(selNode, newOffset, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
}
}
}
// delete any empty cites
bool bEmptyCite = false;
if (leftCite)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsEmptyNode(leftCite, &bEmptyCite, true, false);
if (NS_SUCCEEDED(res) && bEmptyCite) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(leftCite);
}
NS_ENSURE_SUCCESS(res, res);
}
if (rightCite)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsEmptyNode(rightCite, &bEmptyCite, true, false);
if (NS_SUCCEEDED(res) && bEmptyCite) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(rightCite);
}
NS_ENSURE_SUCCESS(res, res);
}
*aHandled = true;
}
return NS_OK;
}
nsresult
nsHTMLEditRules::WillDeleteSelection(Selection* aSelection,
nsIEditor::EDirection aAction,
nsIEditor::EStripWrappers aStripWrappers,
bool* aCancel,
bool* aHandled)
{
MOZ_ASSERT(aStripWrappers == nsIEditor::eStrip ||
aStripWrappers == nsIEditor::eNoStrip);
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
// initialize out param
*aCancel = false;
*aHandled = false;
// remember that we did a selection deletion. Used by CreateStyleForInsertText()
mDidDeleteSelection = true;
// if there is only bogus content, cancel the operation
if (mBogusNode)
{
*aCancel = true;
return NS_OK;
}
bool bCollapsed = aSelection->Collapsed(), join = false;
// origCollapsed is used later to determine whether we should join
// blocks. We don't really care about bCollapsed because it will be
// modified by ExtendSelectionForDelete later. JoinBlocks should
// happen if the original selection is collapsed and the cursor is
// at the end of a block element, in which case ExtendSelectionForDelete
// would always make the selection not collapsed.
bool origCollapsed = bCollapsed;
nsCOMPtr<nsIDOMNode> startNode, selNode;
int32_t startOffset, selOffset;
// first check for table selection mode. If so,
// hand off to table editor.
nsCOMPtr<nsIDOMElement> cell;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetFirstSelectedCell(nullptr, getter_AddRefs(cell));
if (NS_SUCCEEDED(res) && cell) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteTableCellContents();
*aHandled = true;
return res;
}
cell = nullptr;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(startNode), &startOffset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(startNode, NS_ERROR_FAILURE);
if (bCollapsed)
{
// if we are inside an empty block, delete it.
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIContent> hostContent = mHTMLEditor->GetActiveEditingHost();
nsCOMPtr<nsIDOMNode> hostNode = do_QueryInterface(hostContent);
NS_ENSURE_TRUE(hostNode, NS_ERROR_FAILURE);
res = CheckForEmptyBlock(startNode, hostNode, aSelection, aHandled);
NS_ENSURE_SUCCESS(res, res);
if (*aHandled) return NS_OK;
// Test for distance between caret and text that will be deleted
res = CheckBidiLevelForDeletion(aSelection, startNode, startOffset, aAction, aCancel);
NS_ENSURE_SUCCESS(res, res);
if (*aCancel) return NS_OK;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->ExtendSelectionForDelete(aSelection, &aAction);
NS_ENSURE_SUCCESS(res, res);
// We should delete nothing.
if (aAction == nsIEditor::eNone)
return NS_OK;
// ExtendSelectionForDelete() may have changed the selection, update it
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(startNode), &startOffset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(startNode, NS_ERROR_FAILURE);
bCollapsed = aSelection->Collapsed();
}
if (bCollapsed)
{
// what's in the direction we are deleting?
NS_ENSURE_STATE(mHTMLEditor);
nsWSRunObject wsObj(mHTMLEditor, startNode, startOffset);
nsCOMPtr<nsIDOMNode> visNode;
int32_t visOffset;
WSType wsType;
// find next visible node
if (aAction == nsIEditor::eNext)
wsObj.NextVisibleNode(startNode, startOffset, address_of(visNode),
&visOffset, &wsType);
else
wsObj.PriorVisibleNode(startNode, startOffset, address_of(visNode),
&visOffset, &wsType);
if (!visNode) // can't find anything to delete!
{
*aCancel = true;
return res;
}
if (wsType == WSType::normalWS) {
// we found some visible ws to delete. Let ws code handle it.
if (aAction == nsIEditor::eNext)
res = wsObj.DeleteWSForward();
else
res = wsObj.DeleteWSBackward();
*aHandled = true;
NS_ENSURE_SUCCESS(res, res);
res = InsertBRIfNeeded(aSelection);
return res;
} else if (wsType == WSType::text) {
// found normal text to delete.
int32_t so = visOffset;
int32_t eo = visOffset+1;
if (aAction == nsIEditor::ePrevious)
{
if (so == 0) return NS_ERROR_UNEXPECTED;
so--;
eo--;
}
else
{
nsCOMPtr<nsIDOMRange> range;
res = aSelection->GetRangeAt(0, getter_AddRefs(range));
NS_ENSURE_SUCCESS(res, res);
#ifdef DEBUG
nsIDOMNode *container;
res = range->GetStartContainer(&container);
NS_ENSURE_SUCCESS(res, res);
NS_ASSERTION(container == visNode, "selection start not in visNode");
res = range->GetEndContainer(&container);
NS_ENSURE_SUCCESS(res, res);
NS_ASSERTION(container == visNode, "selection end not in visNode");
#endif
res = range->GetStartOffset(&so);
NS_ENSURE_SUCCESS(res, res);
res = range->GetEndOffset(&eo);
NS_ENSURE_SUCCESS(res, res);
}
NS_ENSURE_STATE(mHTMLEditor);
res = nsWSRunObject::PrepareToDeleteRange(mHTMLEditor, address_of(visNode), &so, address_of(visNode), &eo);
NS_ENSURE_SUCCESS(res, res);
nsCOMPtr<nsIDOMCharacterData> nodeAsText(do_QueryInterface(visNode));
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteText(nodeAsText, std::min(so, eo), DeprecatedAbs(eo - so));
*aHandled = true;
NS_ENSURE_SUCCESS(res, res);
res = InsertBRIfNeeded(aSelection);
return res;
} else if (wsType == WSType::special || wsType == WSType::br ||
nsHTMLEditUtils::IsHR(visNode)) {
// short circuit for invisible breaks. delete them and recurse.
if (nsTextEditUtils::IsBreak(visNode) &&
(!mHTMLEditor || !mHTMLEditor->IsVisBreak(visNode)))
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(visNode);
NS_ENSURE_SUCCESS(res, res);
return WillDeleteSelection(aSelection, aAction, aStripWrappers,
aCancel, aHandled);
}
// special handling for backspace when positioned after <hr>
if (aAction == nsIEditor::ePrevious && nsHTMLEditUtils::IsHR(visNode))
{
/*
Only if the caret is positioned at the end-of-hr-line position,
we want to delete the <hr>.
In other words, we only want to delete, if
our selection position (indicated by startNode and startOffset)
is the position directly after the <hr>,
on the same line as the <hr>.
To detect this case we check:
startNode == parentOfVisNode
and
startOffset -1 == visNodeOffsetToVisNodeParent
and
interline position is false (left)
In any other case we set the position to
startnode -1 and interlineposition to false,
only moving the caret to the end-of-hr-line position.
*/
bool moveOnly = true;
selNode = nsEditor::GetNodeLocation(visNode, &selOffset);
bool interLineIsRight;
res = aSelection->GetInterlinePosition(&interLineIsRight);
NS_ENSURE_SUCCESS(res, res);
if (startNode == selNode &&
startOffset -1 == selOffset &&
!interLineIsRight)
{
moveOnly = false;
}
if (moveOnly)
{
// Go to the position after the <hr>, but to the end of the <hr> line
// by setting the interline position to left.
++selOffset;
res = aSelection->Collapse(selNode, selOffset);
aSelection->SetInterlinePosition(false);
mDidExplicitlySetInterline = true;
*aHandled = true;
// There is one exception to the move only case.
// If the <hr> is followed by a <br> we want to delete the <br>.
WSType otherWSType;
nsCOMPtr<nsIDOMNode> otherNode;
int32_t otherOffset;
wsObj.NextVisibleNode(startNode, startOffset, address_of(otherNode),
&otherOffset, &otherWSType);
if (otherWSType == WSType::br) {
// Delete the <br>
NS_ENSURE_STATE(mHTMLEditor);
res = nsWSRunObject::PrepareToDeleteNode(mHTMLEditor, otherNode);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(otherNode);
NS_ENSURE_SUCCESS(res, res);
}
return NS_OK;
}
// else continue with normal delete code
}
// found break or image, or hr.
NS_ENSURE_STATE(mHTMLEditor);
res = nsWSRunObject::PrepareToDeleteNode(mHTMLEditor, visNode);
NS_ENSURE_SUCCESS(res, res);
// remember sibling to visnode, if any
nsCOMPtr<nsIDOMNode> sibling, stepbrother;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLSibling(visNode, address_of(sibling));
// delete the node, and join like nodes if appropriate
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(visNode);
NS_ENSURE_SUCCESS(res, res);
// we did something, so lets say so.
*aHandled = true;
// is there a prior node and are they siblings?
if (sibling) {
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetNextHTMLSibling(sibling, address_of(stepbrother));
}
if (startNode == stepbrother)
{
// are they both text nodes?
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->IsTextNode(startNode) &&
(!mHTMLEditor || mHTMLEditor->IsTextNode(sibling)))
{
NS_ENSURE_STATE(mHTMLEditor);
// if so, join them!
res = JoinNodesSmart(sibling, startNode, address_of(selNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
// fix up selection
res = aSelection->Collapse(selNode, selOffset);
}
}
NS_ENSURE_SUCCESS(res, res);
res = InsertBRIfNeeded(aSelection);
return res;
} else if (wsType == WSType::otherBlock) {
// make sure it's not a table element. If so, cancel the operation
// (translation: users cannot backspace or delete across table cells)
if (nsHTMLEditUtils::IsTableElement(visNode))
{
*aCancel = true;
return NS_OK;
}
// next to a block. See if we are between a block and a br. If so, we really
// want to delete the br. Else join content at selection to the block.
bool bDeletedBR = false;
WSType otherWSType;
nsCOMPtr<nsIDOMNode> otherNode;
int32_t otherOffset;
// find node in other direction
if (aAction == nsIEditor::eNext)
wsObj.PriorVisibleNode(startNode, startOffset, address_of(otherNode),
&otherOffset, &otherWSType);
else
wsObj.NextVisibleNode(startNode, startOffset, address_of(otherNode),
&otherOffset, &otherWSType);
// first find the adjacent node in the block
nsCOMPtr<nsIDOMNode> leafNode, leftNode, rightNode;
if (aAction == nsIEditor::ePrevious)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetLastEditableLeaf( visNode, address_of(leafNode));
NS_ENSURE_SUCCESS(res, res);
leftNode = leafNode;
rightNode = startNode;
}
else
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetFirstEditableLeaf( visNode, address_of(leafNode));
NS_ENSURE_SUCCESS(res, res);
leftNode = startNode;
rightNode = leafNode;
}
if (nsTextEditUtils::IsBreak(otherNode))
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(otherNode);
NS_ENSURE_SUCCESS(res, res);
*aHandled = true;
bDeletedBR = true;
}
// don't cross table boundaries
if (leftNode && rightNode && InDifferentTableElements(leftNode, rightNode)) {
return NS_OK;
}
if (bDeletedBR)
{
// put selection at edge of block and we are done.
nsCOMPtr<nsIDOMNode> newSelNode;
int32_t newSelOffset;
res = GetGoodSelPointForNode(leafNode, aAction, address_of(newSelNode), &newSelOffset);
NS_ENSURE_SUCCESS(res, res);
aSelection->Collapse(newSelNode, newSelOffset);
return res;
}
// else we are joining content to block
nsCOMPtr<nsIDOMNode> selPointNode = startNode;
int32_t selPointOffset = startOffset;
{
NS_ENSURE_STATE(mHTMLEditor);
nsAutoTrackDOMPoint tracker(mHTMLEditor->mRangeUpdater, address_of(selPointNode), &selPointOffset);
res = JoinBlocks(leftNode, rightNode, aCancel);
*aHandled = true;
NS_ENSURE_SUCCESS(res, res);
}
aSelection->Collapse(selPointNode, selPointOffset);
return res;
} else if (wsType == WSType::thisBlock) {
// at edge of our block. Look beside it and see if we can join to an adjacent block
// make sure it's not a table element. If so, cancel the operation
// (translation: users cannot backspace or delete across table cells)
if (nsHTMLEditUtils::IsTableElement(visNode))
{
*aCancel = true;
return NS_OK;
}
// first find the relavent nodes
nsCOMPtr<nsIDOMNode> leftNode, rightNode;
if (aAction == nsIEditor::ePrevious)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetPriorHTMLNode(visNode, address_of(leftNode));
NS_ENSURE_SUCCESS(res, res);
rightNode = startNode;
}
else
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLNode( visNode, address_of(rightNode));
NS_ENSURE_SUCCESS(res, res);
leftNode = startNode;
}
// nothing to join
if (!leftNode || !rightNode)
{
*aCancel = true;
return NS_OK;
}
// don't cross table boundaries -- cancel it
if (InDifferentTableElements(leftNode, rightNode)) {
*aCancel = true;
return NS_OK;
}
nsCOMPtr<nsIDOMNode> selPointNode = startNode;
int32_t selPointOffset = startOffset;
{
NS_ENSURE_STATE(mHTMLEditor);
nsAutoTrackDOMPoint tracker(mHTMLEditor->mRangeUpdater, address_of(selPointNode), &selPointOffset);
res = JoinBlocks(leftNode, rightNode, aCancel);
*aHandled = true;
NS_ENSURE_SUCCESS(res, res);
}
aSelection->Collapse(selPointNode, selPointOffset);
return res;
}
}
// else we have a non collapsed selection
// first adjust the selection
res = ExpandSelectionForDeletion(aSelection);
NS_ENSURE_SUCCESS(res, res);
// remember that we did a ranged delete for the benefit of AfterEditInner().
mDidRangedDelete = true;
// refresh start and end points
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(startNode), &startOffset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(startNode, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMNode> endNode;
int32_t endOffset;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetEndNodeAndOffset(aSelection, getter_AddRefs(endNode), &endOffset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(endNode, NS_ERROR_FAILURE);
// figure out if the endpoints are in nodes that can be merged
// adjust surrounding whitespace in preperation to delete selection
if (!IsPlaintextEditor())
{
NS_ENSURE_STATE(mHTMLEditor);
nsAutoTxnsConserveSelection dontSpazMySelection(mHTMLEditor);
res = nsWSRunObject::PrepareToDeleteRange(mHTMLEditor,
address_of(startNode), &startOffset,
address_of(endNode), &endOffset);
NS_ENSURE_SUCCESS(res, res);
}
{
// track location of where we are deleting
NS_ENSURE_STATE(mHTMLEditor);
nsAutoTrackDOMPoint startTracker(mHTMLEditor->mRangeUpdater,
address_of(startNode), &startOffset);
nsAutoTrackDOMPoint endTracker(mHTMLEditor->mRangeUpdater,
address_of(endNode), &endOffset);
// we are handling all ranged deletions directly now.
*aHandled = true;
if (endNode == startNode)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteSelectionImpl(aAction, aStripWrappers);
NS_ENSURE_SUCCESS(res, res);
}
else
{
// figure out mailcite ancestors
nsCOMPtr<nsIDOMNode> endCiteNode, startCiteNode;
res = GetTopEnclosingMailCite(startNode, address_of(startCiteNode),
IsPlaintextEditor());
NS_ENSURE_SUCCESS(res, res);
res = GetTopEnclosingMailCite(endNode, address_of(endCiteNode),
IsPlaintextEditor());
NS_ENSURE_SUCCESS(res, res);
// if we only have a mailcite at one of the two endpoints, set the directionality
// of the deletion so that the selection will end up outside the mailcite.
if (startCiteNode && !endCiteNode)
{
aAction = nsIEditor::eNext;
}
else if (!startCiteNode && endCiteNode)
{
aAction = nsIEditor::ePrevious;
}
// figure out block parents
nsCOMPtr<nsIDOMNode> leftParent;
nsCOMPtr<nsIDOMNode> rightParent;
if (IsBlockNode(startNode))
leftParent = startNode;
else {
NS_ENSURE_STATE(mHTMLEditor);
leftParent = mHTMLEditor->GetBlockNodeParent(startNode);
}
if (IsBlockNode(endNode))
rightParent = endNode;
else {
NS_ENSURE_STATE(mHTMLEditor);
rightParent = mHTMLEditor->GetBlockNodeParent(endNode);
}
// are endpoint block parents the same? use default deletion
if (leftParent == rightParent)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteSelectionImpl(aAction, aStripWrappers);
}
else
{
// deleting across blocks
// are the blocks of same type?
NS_ENSURE_STATE(leftParent && rightParent);
// are the blocks siblings?
nsCOMPtr<nsIDOMNode> leftBlockParent;
nsCOMPtr<nsIDOMNode> rightBlockParent;
leftParent->GetParentNode(getter_AddRefs(leftBlockParent));
rightParent->GetParentNode(getter_AddRefs(rightBlockParent));
// MOOSE: this could conceivably screw up a table.. fix me.
if ( (leftBlockParent == rightBlockParent)
&& (!mHTMLEditor || mHTMLEditor->NodesSameType(leftParent, rightParent)) )
{
NS_ENSURE_STATE(mHTMLEditor);
if (nsHTMLEditUtils::IsParagraph(leftParent))
{
// first delete the selection
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteSelectionImpl(aAction, aStripWrappers);
NS_ENSURE_SUCCESS(res, res);
// then join para's, insert break
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->JoinNodeDeep(leftParent,rightParent,address_of(selNode),&selOffset);
NS_ENSURE_SUCCESS(res, res);
// fix up selection
res = aSelection->Collapse(selNode,selOffset);
return res;
}
if (nsHTMLEditUtils::IsListItem(leftParent)
|| nsHTMLEditUtils::IsHeader(leftParent))
{
// first delete the selection
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteSelectionImpl(aAction, aStripWrappers);
NS_ENSURE_SUCCESS(res, res);
// join blocks
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->JoinNodeDeep(leftParent,rightParent,address_of(selNode),&selOffset);
NS_ENSURE_SUCCESS(res, res);
// fix up selection
res = aSelection->Collapse(selNode,selOffset);
return res;
}
}
// else blocks not same type, or not siblings. Delete everything except
// table elements.
join = true;
uint32_t rangeCount = aSelection->GetRangeCount();
for (uint32_t rangeIdx = 0; rangeIdx < rangeCount; ++rangeIdx) {
nsRefPtr<nsRange> range = aSelection->GetRangeAt(rangeIdx);
// build a list of nodes in the range
nsCOMArray<nsIDOMNode> arrayOfNodes;
nsTrivialFunctor functor;
nsDOMSubtreeIterator iter;
res = iter.Init(range);
NS_ENSURE_SUCCESS(res, res);
res = iter.AppendList(functor, arrayOfNodes);
NS_ENSURE_SUCCESS(res, res);
// now that we have the list, delete non table elements
int32_t listCount = arrayOfNodes.Count();
for (int32_t j = 0; j < listCount; j++) {
nsCOMPtr<nsINode> somenode = do_QueryInterface(arrayOfNodes[0]);
NS_ENSURE_STATE(somenode);
DeleteNonTableElements(somenode);
arrayOfNodes.RemoveObjectAt(0);
// If something visible is deleted, no need to join.
// Visible means all nodes except non-visible textnodes and breaks.
if (join && origCollapsed) {
if (!somenode->IsContent()) {
join = false;
continue;
}
nsCOMPtr<nsIContent> content = somenode->AsContent();
if (content->NodeType() == nsIDOMNode::TEXT_NODE) {
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->IsVisTextNode(content, &join, true);
} else {
NS_ENSURE_STATE(mHTMLEditor);
join = content->IsHTML(nsGkAtoms::br) &&
!mHTMLEditor->IsVisBreak(somenode->AsDOMNode());
}
}
}
}
// check endopints for possible text deletion.
// we can assume that if text node is found, we can
// delete to end or to begining as appropriate,
// since the case where both sel endpoints in same
// text node was already handled (we wouldn't be here)
NS_ENSURE_STATE(mHTMLEditor);
if ( mHTMLEditor->IsTextNode(startNode) )
{
// delete to last character
nsCOMPtr<nsIDOMCharacterData>nodeAsText;
uint32_t len;
nodeAsText = do_QueryInterface(startNode);
nodeAsText->GetLength(&len);
if (len > (uint32_t)startOffset)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteText(nodeAsText,startOffset,len-startOffset);
NS_ENSURE_SUCCESS(res, res);
}
}
NS_ENSURE_STATE(mHTMLEditor);
if ( mHTMLEditor->IsTextNode(endNode) )
{
// delete to first character
nsCOMPtr<nsIDOMCharacterData>nodeAsText;
nodeAsText = do_QueryInterface(endNode);
if (endOffset)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteText(nodeAsText,0,endOffset);
NS_ENSURE_SUCCESS(res, res);
}
}
if (join) {
res = JoinBlocks(leftParent, rightParent, aCancel);
NS_ENSURE_SUCCESS(res, res);
}
}
}
}
//If we're joining blocks: if deleting forward the selection should be
//collapsed to the end of the selection, if deleting backward the selection
//should be collapsed to the beginning of the selection. But if we're not
//joining then the selection should collapse to the beginning of the
//selection if we'redeleting forward, because the end of the selection will
//still be in the next block. And same thing for deleting backwards
//(selection should collapse to the end, because the beginning will still
//be in the first block). See Bug 507936
if (join ? aAction == nsIEditor::eNext : aAction == nsIEditor::ePrevious)
{
res = aSelection->Collapse(endNode,endOffset);
}
else
{
res = aSelection->Collapse(startNode,startOffset);
}
return res;
}
/*****************************************************************************************************
* InsertBRIfNeeded: determines if a br is needed for current selection to not be spastic.
* If so, it inserts one. Callers responsibility to only call with collapsed selection.
* nsISelection *aSelection the collapsed selection
*/
nsresult
nsHTMLEditRules::InsertBRIfNeeded(nsISelection *aSelection)
{
NS_ENSURE_TRUE(aSelection, NS_ERROR_NULL_POINTER);
// get selection
nsCOMPtr<nsIDOMNode> node;
int32_t offset;
nsresult res = mEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(node), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(node, NS_ERROR_FAILURE);
// inline elements don't need any br
if (!IsBlockNode(node))
return res;
// examine selection
NS_ENSURE_STATE(mHTMLEditor);
nsWSRunObject wsObj(mHTMLEditor, node, offset);
if (((wsObj.mStartReason & WSType::block) ||
(wsObj.mStartReason & WSType::br)) &&
(wsObj.mEndReason & WSType::block)) {
// if we are tucked between block boundaries then insert a br
// first check that we are allowed to
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->CanContainTag(node, nsGkAtoms::br)) {
nsCOMPtr<nsIDOMNode> brNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(node, offset, address_of(brNode), nsIEditor::ePrevious);
}
}
return res;
}
/*****************************************************************************************************
* GetGoodSelPointForNode: Finds where at a node you would want to set the selection if you were
* trying to have a caret next to it.
* nsIDOMNode *aNode the node
* nsIEditor::EDirection aAction which edge to find: eNext indicates beginning, ePrevious ending
* nsCOMPtr<nsIDOMNode> *outSelNode desired sel node
* int32_t *outSelOffset desired sel offset
*/
nsresult
nsHTMLEditRules::GetGoodSelPointForNode(nsIDOMNode *aNode, nsIEditor::EDirection aAction,
nsCOMPtr<nsIDOMNode> *outSelNode, int32_t *outSelOffset)
{
NS_ENSURE_TRUE(aNode && outSelNode && outSelOffset, NS_ERROR_NULL_POINTER);
nsresult res = NS_OK;
// default values
*outSelNode = aNode;
*outSelOffset = 0;
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->IsTextNode(aNode) ||
!mHTMLEditor || mHTMLEditor->IsContainer(aNode))
{
NS_ENSURE_STATE(mHTMLEditor);
if (aAction == nsIEditor::ePrevious)
{
uint32_t len;
res = mHTMLEditor->GetLengthOfDOMNode(aNode, len);
*outSelOffset = int32_t(len);
NS_ENSURE_SUCCESS(res, res);
}
}
else
{
*outSelNode = nsEditor::GetNodeLocation(aNode, outSelOffset);
if (!nsTextEditUtils::IsBreak(aNode) ||
!mHTMLEditor || mHTMLEditor->IsVisBreak(aNode))
{
NS_ENSURE_STATE(mHTMLEditor);
if (aAction == nsIEditor::ePrevious)
(*outSelOffset)++;
}
}
return res;
}
/*****************************************************************************************************
* JoinBlocks: this method is used to join two block elements. The right element is always joined
* to the left element. If the elements are the same type and not nested within each other,
* JoinNodesSmart is called (example, joining two list items together into one). If the elements
* are not the same type, or one is a descendant of the other, we instead destroy the right block
* placing its children into leftblock. DTD containment rules are followed throughout.
* nsCOMPtr<nsIDOMNode> *aLeftBlock pointer to the left block
* nsCOMPtr<nsIDOMNode> *aRightBlock pointer to the right block; will have contents moved to left block
* bool *aCanceled return TRUE if we had to cancel operation
*/
nsresult
nsHTMLEditRules::JoinBlocks(nsIDOMNode *aLeftNode,
nsIDOMNode *aRightNode,
bool *aCanceled)
{
NS_ENSURE_ARG_POINTER(aLeftNode && aRightNode);
nsCOMPtr<nsIDOMNode> aLeftBlock, aRightBlock;
if (IsBlockNode(aLeftNode)) {
aLeftBlock = aLeftNode;
} else if (aLeftNode) {
NS_ENSURE_STATE(mHTMLEditor);
aLeftBlock = mHTMLEditor->GetBlockNodeParent(aLeftNode);
}
if (IsBlockNode(aRightNode)) {
aRightBlock = aRightNode;
} else if (aRightNode) {
NS_ENSURE_STATE(mHTMLEditor);
aRightBlock = mHTMLEditor->GetBlockNodeParent(aRightNode);
}
// sanity checks
NS_ENSURE_TRUE(aLeftBlock && aRightBlock, NS_ERROR_NULL_POINTER);
NS_ENSURE_STATE(aLeftBlock != aRightBlock);
if (nsHTMLEditUtils::IsTableElement(aLeftBlock) ||
nsHTMLEditUtils::IsTableElement(aRightBlock)) {
// do not try to merge table elements
*aCanceled = true;
return NS_OK;
}
// make sure we don't try to move thing's into HR's, which look like blocks but aren't containers
if (nsHTMLEditUtils::IsHR(aLeftBlock)) {
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIDOMNode> realLeft = mHTMLEditor->GetBlockNodeParent(aLeftBlock);
aLeftBlock = realLeft;
}
if (nsHTMLEditUtils::IsHR(aRightBlock)) {
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIDOMNode> realRight = mHTMLEditor->GetBlockNodeParent(aRightBlock);
aRightBlock = realRight;
}
// bail if both blocks the same
if (aLeftBlock == aRightBlock) {
*aCanceled = true;
return NS_OK;
}
// Joining a list item to its parent is a NOP.
if (nsHTMLEditUtils::IsList(aLeftBlock) &&
nsHTMLEditUtils::IsListItem(aRightBlock)) {
nsCOMPtr<nsIDOMNode> rightParent;
aRightBlock->GetParentNode(getter_AddRefs(rightParent));
if (rightParent == aLeftBlock) {
return NS_OK;
}
}
// special rule here: if we are trying to join list items, and they are in different lists,
// join the lists instead.
bool bMergeLists = false;
nsIAtom* existingList = nsGkAtoms::_empty;
int32_t theOffset;
nsCOMPtr<nsIDOMNode> leftList, rightList;
if (nsHTMLEditUtils::IsListItem(aLeftBlock) &&
nsHTMLEditUtils::IsListItem(aRightBlock)) {
aLeftBlock->GetParentNode(getter_AddRefs(leftList));
aRightBlock->GetParentNode(getter_AddRefs(rightList));
if (leftList && rightList && (leftList!=rightList))
{
// there are some special complications if the lists are descendants of
// the other lists' items. Note that it is ok for them to be descendants
// of the other lists themselves, which is the usual case for sublists
// in our impllementation.
if (!nsEditorUtils::IsDescendantOf(leftList, aRightBlock, &theOffset) &&
!nsEditorUtils::IsDescendantOf(rightList, aLeftBlock, &theOffset))
{
aLeftBlock = leftList;
aRightBlock = rightList;
bMergeLists = true;
NS_ENSURE_STATE(mHTMLEditor);
existingList = mHTMLEditor->GetTag(leftList);
}
}
}
NS_ENSURE_STATE(mHTMLEditor);
nsAutoTxnsConserveSelection dontSpazMySelection(mHTMLEditor);
nsresult res = NS_OK;
int32_t rightOffset = 0;
int32_t leftOffset = -1;
// theOffset below is where you find yourself in aRightBlock when you traverse upwards
// from aLeftBlock
if (nsEditorUtils::IsDescendantOf(aLeftBlock, aRightBlock, &rightOffset)) {
// tricky case. left block is inside right block.
// Do ws adjustment. This just destroys non-visible ws at boundaries we will be joining.
rightOffset++;
NS_ENSURE_STATE(mHTMLEditor);
res = nsWSRunObject::ScrubBlockBoundary(mHTMLEditor,
address_of(aLeftBlock),
nsWSRunObject::kBlockEnd);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = nsWSRunObject::ScrubBlockBoundary(mHTMLEditor,
address_of(aRightBlock),
nsWSRunObject::kAfterBlock,
&rightOffset);
NS_ENSURE_SUCCESS(res, res);
// Do br adjustment.
nsCOMPtr<nsIDOMNode> brNode;
res = CheckForInvisibleBR(aLeftBlock, kBlockEnd, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
if (bMergeLists)
{
// idea here is to take all children in rightList that are past
// theOffset, and pull them into leftlist.
nsCOMPtr<nsIDOMNode> childToMove;
nsCOMPtr<nsIContent> parent(do_QueryInterface(rightList));
NS_ENSURE_TRUE(parent, NS_ERROR_NULL_POINTER);
nsIContent *child = parent->GetChildAt(theOffset);
while (child)
{
childToMove = do_QueryInterface(child);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(childToMove, leftList, -1);
NS_ENSURE_SUCCESS(res, res);
child = parent->GetChildAt(rightOffset);
}
}
else
{
res = MoveBlock(aLeftBlock, aRightBlock, leftOffset, rightOffset);
}
NS_ENSURE_STATE(mHTMLEditor);
if (brNode) mHTMLEditor->DeleteNode(brNode);
// theOffset below is where you find yourself in aLeftBlock when you traverse upwards
// from aRightBlock
} else if (nsEditorUtils::IsDescendantOf(aRightBlock, aLeftBlock, &leftOffset)) {
// tricky case. right block is inside left block.
// Do ws adjustment. This just destroys non-visible ws at boundaries we will be joining.
NS_ENSURE_STATE(mHTMLEditor);
res = nsWSRunObject::ScrubBlockBoundary(mHTMLEditor,
address_of(aRightBlock),
nsWSRunObject::kBlockStart);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = nsWSRunObject::ScrubBlockBoundary(mHTMLEditor,
address_of(aLeftBlock),
nsWSRunObject::kBeforeBlock,
&leftOffset);
NS_ENSURE_SUCCESS(res, res);
// Do br adjustment.
nsCOMPtr<nsIDOMNode> brNode;
res = CheckForInvisibleBR(aLeftBlock, kBeforeBlock, address_of(brNode),
leftOffset);
NS_ENSURE_SUCCESS(res, res);
if (bMergeLists)
{
res = MoveContents(rightList, leftList, &leftOffset);
}
else
{
// Left block is a parent of right block, and the parent of the previous
// visible content. Right block is a child and contains the contents we
// want to move.
int32_t previousContentOffset;
nsCOMPtr<nsIDOMNode> previousContentParent;
if (aLeftNode == aLeftBlock) {
// We are working with valid HTML, aLeftNode is a block node, and is
// therefore allowed to contain aRightBlock. This is the simple case,
// we will simply move the content in aRightBlock out of its block.
previousContentParent = aLeftBlock;
previousContentOffset = leftOffset;
} else {
// We try to work as well as possible with HTML that's already invalid.
// Although "right block" is a block, and a block must not be contained
// in inline elements, reality is that broken documents do exist. The
// DIRECT parent of "left NODE" might be an inline element. Previous
// versions of this code skipped inline parents until the first block
// parent was found (and used "left block" as the destination).
// However, in some situations this strategy moves the content to an
// unexpected position. (see bug 200416) The new idea is to make the
// moving content a sibling, next to the previous visible content.
previousContentParent =
nsEditor::GetNodeLocation(aLeftNode, &previousContentOffset);
// We want to move our content just after the previous visible node.
previousContentOffset++;
}
// Because we don't want the moving content to receive the style of the
// previous content, we split the previous content's style.
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsINode> editorRoot = mHTMLEditor->GetEditorRoot();
if (!editorRoot || aLeftNode != editorRoot->AsDOMNode()) {
nsCOMPtr<nsIDOMNode> splittedPreviousContent;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitStyleAbovePoint(address_of(previousContentParent),
&previousContentOffset,
nullptr, nullptr, nullptr,
address_of(splittedPreviousContent));
NS_ENSURE_SUCCESS(res, res);
if (splittedPreviousContent) {
previousContentParent =
nsEditor::GetNodeLocation(splittedPreviousContent,
&previousContentOffset);
}
}
res = MoveBlock(previousContentParent, aRightBlock,
previousContentOffset, rightOffset);
}
NS_ENSURE_STATE(mHTMLEditor);
if (brNode) mHTMLEditor->DeleteNode(brNode);
}
else
{
// normal case. blocks are siblings, or at least close enough to siblings. An example
// of the latter is a <p>paragraph</p><ul><li>one<li>two<li>three</ul>. The first
// li and the p are not true siblings, but we still want to join them if you backspace
// from li into p.
// adjust whitespace at block boundaries
NS_ENSURE_STATE(mHTMLEditor);
res = nsWSRunObject::PrepareToJoinBlocks(mHTMLEditor, aLeftBlock, aRightBlock);
NS_ENSURE_SUCCESS(res, res);
// Do br adjustment.
nsCOMPtr<nsIDOMNode> brNode;
res = CheckForInvisibleBR(aLeftBlock, kBlockEnd, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
if (bMergeLists || mHTMLEditor->NodesSameType(aLeftBlock, aRightBlock)) {
// nodes are same type. merge them.
nsCOMPtr<nsIDOMNode> parent;
int32_t offset;
res = JoinNodesSmart(aLeftBlock, aRightBlock, address_of(parent), &offset);
if (NS_SUCCEEDED(res) && bMergeLists)
{
nsCOMPtr<nsIDOMNode> newBlock;
res = ConvertListType(aRightBlock, address_of(newBlock),
existingList, nsGkAtoms::li);
}
}
else
{
// nodes are disimilar types.
res = MoveBlock(aLeftBlock, aRightBlock, leftOffset, rightOffset);
}
if (NS_SUCCEEDED(res) && brNode)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(brNode);
}
}
return res;
}
/*****************************************************************************************************
* MoveBlock: this method is used to move the content from rightBlock into leftBlock
* Note that the "block" might merely be inline nodes between <br>s, or between blocks, etc.
* DTD containment rules are followed throughout.
* nsIDOMNode *aLeftBlock parent to receive moved content
* nsIDOMNode *aRightBlock parent to provide moved content
* int32_t aLeftOffset offset in aLeftBlock to move content to
* int32_t aRightOffset offset in aRightBlock to move content from
*/
nsresult
nsHTMLEditRules::MoveBlock(nsIDOMNode *aLeftBlock, nsIDOMNode *aRightBlock, int32_t aLeftOffset, int32_t aRightOffset)
{
nsCOMArray<nsIDOMNode> arrayOfNodes;
nsCOMPtr<nsISupports> isupports;
// GetNodesFromPoint is the workhorse that figures out what we wnat to move.
nsresult res = GetNodesFromPoint(DOMPoint(aRightBlock,aRightOffset),
EditAction::makeList, arrayOfNodes, true);
NS_ENSURE_SUCCESS(res, res);
int32_t listCount = arrayOfNodes.Count();
int32_t i;
for (i=0; i<listCount; i++)
{
// get the node to act on
nsIDOMNode* curNode = arrayOfNodes[i];
if (IsBlockNode(curNode))
{
// For block nodes, move their contents only, then delete block.
res = MoveContents(curNode, aLeftBlock, &aLeftOffset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(curNode);
}
else
{
// otherwise move the content as is, checking against the dtd.
res = MoveNodeSmart(curNode, aLeftBlock, &aLeftOffset);
}
}
return res;
}
/*****************************************************************************************************
* MoveNodeSmart: this method is used to move node aSource to (aDest,aOffset).
* DTD containment rules are followed throughout. aOffset is updated to point _after_
* inserted content.
* nsIDOMNode *aSource the selection.
* nsIDOMNode *aDest parent to receive moved content
* int32_t *aOffset offset in aDest to move content to
*/
nsresult
nsHTMLEditRules::MoveNodeSmart(nsIDOMNode *aSource, nsIDOMNode *aDest, int32_t *aOffset)
{
NS_ENSURE_TRUE(aSource && aDest && aOffset, NS_ERROR_NULL_POINTER);
nsresult res;
// check if this node can go into the destination node
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->CanContain(aDest, aSource)) {
// if it can, move it there
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(aSource, aDest, *aOffset);
NS_ENSURE_SUCCESS(res, res);
if (*aOffset != -1) ++(*aOffset);
}
else
{
// if it can't, move its children, and then delete it.
res = MoveContents(aSource, aDest, aOffset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(aSource);
NS_ENSURE_SUCCESS(res, res);
}
return NS_OK;
}
/*****************************************************************************************************
* MoveContents: this method is used to move node the _contents_ of aSource to (aDest,aOffset).
* DTD containment rules are followed throughout. aOffset is updated to point _after_
* inserted content. aSource is deleted.
* nsIDOMNode *aSource the selection.
* nsIDOMNode *aDest parent to receive moved content
* int32_t *aOffset offset in aDest to move content to
*/
nsresult
nsHTMLEditRules::MoveContents(nsIDOMNode *aSource, nsIDOMNode *aDest, int32_t *aOffset)
{
NS_ENSURE_TRUE(aSource && aDest && aOffset, NS_ERROR_NULL_POINTER);
if (aSource == aDest) return NS_ERROR_ILLEGAL_VALUE;
NS_ENSURE_STATE(mHTMLEditor);
NS_ASSERTION(!mHTMLEditor->IsTextNode(aSource), "#text does not have contents");
nsCOMPtr<nsIDOMNode> child;
nsAutoString tag;
nsresult res;
aSource->GetFirstChild(getter_AddRefs(child));
while (child)
{
res = MoveNodeSmart(child, aDest, aOffset);
NS_ENSURE_SUCCESS(res, res);
aSource->GetFirstChild(getter_AddRefs(child));
}
return NS_OK;
}
nsresult
nsHTMLEditRules::DeleteNonTableElements(nsINode* aNode)
{
MOZ_ASSERT(aNode);
if (!nsHTMLEditUtils::IsTableElementButNotTable(aNode)) {
NS_ENSURE_STATE(mHTMLEditor);
return mHTMLEditor->DeleteNode(aNode->AsDOMNode());
}
for (int32_t i = aNode->GetChildCount() - 1; i >= 0; --i) {
nsresult rv = DeleteNonTableElements(aNode->GetChildAt(i));
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
nsresult
nsHTMLEditRules::DidDeleteSelection(nsISelection *aSelection,
nsIEditor::EDirection aDir,
nsresult aResult)
{
if (!aSelection) { return NS_ERROR_NULL_POINTER; }
// find where we are
nsCOMPtr<nsIDOMNode> startNode;
int32_t startOffset;
nsresult res = mEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(startNode), &startOffset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(startNode, NS_ERROR_FAILURE);
// find any enclosing mailcite
nsCOMPtr<nsIDOMNode> citeNode;
res = GetTopEnclosingMailCite(startNode, address_of(citeNode),
IsPlaintextEditor());
NS_ENSURE_SUCCESS(res, res);
if (citeNode) {
nsCOMPtr<nsINode> cite = do_QueryInterface(citeNode);
bool isEmpty = true, seenBR = false;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->IsEmptyNodeImpl(cite, &isEmpty, true, true, false, &seenBR);
if (isEmpty)
{
nsCOMPtr<nsIDOMNode> brNode;
int32_t offset;
nsCOMPtr<nsIDOMNode> parent = nsEditor::GetNodeLocation(citeNode, &offset);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(citeNode);
NS_ENSURE_SUCCESS(res, res);
if (parent && seenBR)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(parent, offset, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
aSelection->Collapse(parent, offset);
}
}
}
// call through to base class
return nsTextEditRules::DidDeleteSelection(aSelection, aDir, aResult);
}
nsresult
nsHTMLEditRules::WillMakeList(Selection* aSelection,
const nsAString* aListType,
bool aEntireList,
const nsAString* aBulletType,
bool* aCancel,
bool* aHandled,
const nsAString* aItemType)
{
if (!aSelection || !aListType || !aCancel || !aHandled) {
return NS_ERROR_NULL_POINTER;
}
nsCOMPtr<nsIAtom> listTypeAtom = do_GetAtom(*aListType);
NS_ENSURE_TRUE(listTypeAtom, NS_ERROR_OUT_OF_MEMORY);
nsresult res = WillInsert(aSelection, aCancel);
NS_ENSURE_SUCCESS(res, res);
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = false;
*aHandled = false;
// deduce what tag to use for list items
nsCOMPtr<nsIAtom> itemType;
if (aItemType) {
itemType = do_GetAtom(*aItemType);
NS_ENSURE_TRUE(itemType, NS_ERROR_OUT_OF_MEMORY);
} else if (listTypeAtom == nsGkAtoms::dl) {
itemType = nsGkAtoms::dd;
} else {
itemType = nsGkAtoms::li;
}
// convert the selection ranges into "promoted" selection ranges:
// this basically just expands the range to include the immediate
// block parent, and then further expands to include any ancestors
// whose children are all in the range
*aHandled = true;
res = NormalizeSelection(aSelection);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
nsAutoSelectionReset selectionResetter(aSelection, mHTMLEditor);
nsCOMArray<nsIDOMNode> arrayOfNodes;
res = GetListActionNodes(arrayOfNodes, aEntireList);
NS_ENSURE_SUCCESS(res, res);
int32_t listCount = arrayOfNodes.Count();
// check if all our nodes are <br>s, or empty inlines
bool bOnlyBreaks = true;
for (int32_t j = 0; j < listCount; j++) {
nsIDOMNode* curNode = arrayOfNodes[j];
// if curNode is not a Break or empty inline, we're done
if (!nsTextEditUtils::IsBreak(curNode) && !IsEmptyInline(curNode)) {
bOnlyBreaks = false;
break;
}
}
// if no nodes, we make empty list. Ditto if the user tried to make a list
// of some # of breaks.
if (!listCount || bOnlyBreaks) {
nsCOMPtr<nsIDOMNode> parent, theList, theListItem;
int32_t offset;
// if only breaks, delete them
if (bOnlyBreaks) {
for (int32_t j = 0; j < (int32_t)listCount; j++) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(arrayOfNodes[j]);
NS_ENSURE_SUCCESS(res, res);
}
}
// get selection location
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection,
getter_AddRefs(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
// make sure we can put a list here
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->CanContainTag(parent, listTypeAtom)) {
*aCancel = true;
return NS_OK;
}
res = SplitAsNeeded(aListType, address_of(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(*aListType, parent, offset,
getter_AddRefs(theList));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(nsDependentAtomString(itemType), theList, 0,
getter_AddRefs(theListItem));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = theListItem;
// put selection in new list item
res = aSelection->Collapse(theListItem, 0);
// to prevent selection resetter from overriding us
selectionResetter.Abort();
*aHandled = true;
return res;
}
// if there is only one node in the array, and it is a list, div, or
// blockquote, then look inside of it until we find inner list or content.
res = LookInsideDivBQandList(arrayOfNodes);
NS_ENSURE_SUCCESS(res, res);
// Ok, now go through all the nodes and put then in the list,
// or whatever is approriate. Wohoo!
listCount = arrayOfNodes.Count();
nsCOMPtr<nsIDOMNode> curParent;
nsCOMPtr<nsIDOMNode> curList;
nsCOMPtr<nsIDOMNode> prevListItem;
for (int32_t i = 0; i < listCount; i++) {
// here's where we actually figure out what to do
nsCOMPtr<nsIDOMNode> newBlock;
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[i];
int32_t offset;
curParent = nsEditor::GetNodeLocation(curNode, &offset);
// make sure we don't assemble content that is in different table cells
// into the same list. respect table cell boundaries when listifying.
if (curList && InDifferentTableElements(curList, curNode)) {
curList = nullptr;
}
// if curNode is a Break, delete it, and quit remembering prev list item
if (nsTextEditUtils::IsBreak(curNode)) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(curNode);
NS_ENSURE_SUCCESS(res, res);
prevListItem = 0;
continue;
} else if (IsEmptyInline(curNode)) {
// if curNode is an empty inline container, delete it
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(curNode);
NS_ENSURE_SUCCESS(res, res);
continue;
}
if (nsHTMLEditUtils::IsList(curNode)) {
// do we have a curList already?
if (curList && !nsEditorUtils::IsDescendantOf(curNode, curList)) {
// move all of our children into curList. cheezy way to do it: move
// whole list and then RemoveContainer() on the list. ConvertListType
// first: that routine handles converting the list item types, if
// needed
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curList, -1);
NS_ENSURE_SUCCESS(res, res);
res = ConvertListType(curNode, address_of(newBlock), listTypeAtom,
itemType);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveBlockContainer(newBlock);
NS_ENSURE_SUCCESS(res, res);
} else {
// replace list with new list type
res = ConvertListType(curNode, address_of(newBlock), listTypeAtom,
itemType);
NS_ENSURE_SUCCESS(res, res);
curList = newBlock;
}
prevListItem = 0;
continue;
}
if (nsHTMLEditUtils::IsListItem(curNode)) {
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->GetTag(curParent) != listTypeAtom) {
// list item is in wrong type of list. if we don't have a curList,
// split the old list and make a new list of correct type.
if (!curList || nsEditorUtils::IsDescendantOf(curNode, curList)) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNode(curParent, offset,
getter_AddRefs(newBlock));
NS_ENSURE_SUCCESS(res, res);
int32_t offset;
nsCOMPtr<nsIDOMNode> parent = nsEditor::GetNodeLocation(curParent, &offset);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(*aListType, parent, offset,
getter_AddRefs(curList));
NS_ENSURE_SUCCESS(res, res);
}
// move list item to new list
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curList, -1);
NS_ENSURE_SUCCESS(res, res);
// convert list item type if needed
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->NodeIsType(curNode, itemType)) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->ReplaceContainer(curNode, address_of(newBlock),
nsDependentAtomString(itemType));
NS_ENSURE_SUCCESS(res, res);
}
} else {
// item is in right type of list. But we might still have to move it.
// and we might need to convert list item types.
if (!curList) {
curList = curParent;
} else if (curParent != curList) {
// move list item to new list
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curList, -1);
NS_ENSURE_SUCCESS(res, res);
}
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->NodeIsType(curNode, itemType)) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->ReplaceContainer(curNode, address_of(newBlock),
nsDependentAtomString(itemType));
NS_ENSURE_SUCCESS(res, res);
}
}
nsCOMPtr<nsIDOMElement> curElement = do_QueryInterface(curNode);
NS_NAMED_LITERAL_STRING(typestr, "type");
if (aBulletType && !aBulletType->IsEmpty()) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SetAttribute(curElement, typestr, *aBulletType);
} else {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveAttribute(curElement, typestr);
}
NS_ENSURE_SUCCESS(res, res);
continue;
}
// if we hit a div clear our prevListItem, insert divs contents
// into our node array, and remove the div
if (nsHTMLEditUtils::IsDiv(curNode)) {
prevListItem = nullptr;
int32_t j = i + 1;
res = GetInnerContent(curNode, arrayOfNodes, &j);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveContainer(curNode);
NS_ENSURE_SUCCESS(res, res);
listCount = arrayOfNodes.Count();
continue;
}
// need to make a list to put things in if we haven't already,
if (!curList) {
res = SplitAsNeeded(aListType, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(*aListType, curParent, offset,
getter_AddRefs(curList));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = curList;
// curList is now the correct thing to put curNode in
prevListItem = 0;
}
// if curNode isn't a list item, we must wrap it in one
nsCOMPtr<nsIDOMNode> listItem;
if (!nsHTMLEditUtils::IsListItem(curNode)) {
if (IsInlineNode(curNode) && prevListItem) {
// this is a continuation of some inline nodes that belong together in
// the same list item. use prevListItem
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, prevListItem, -1);
NS_ENSURE_SUCCESS(res, res);
} else {
// don't wrap li around a paragraph. instead replace paragraph with li
if (nsHTMLEditUtils::IsParagraph(curNode)) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->ReplaceContainer(curNode, address_of(listItem),
nsDependentAtomString(itemType));
} else {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->InsertContainerAbove(curNode, address_of(listItem),
nsDependentAtomString(itemType));
}
NS_ENSURE_SUCCESS(res, res);
if (IsInlineNode(curNode)) {
prevListItem = listItem;
} else {
prevListItem = nullptr;
}
}
} else {
listItem = curNode;
}
if (listItem) {
// if we made a new list item, deal with it: tuck the listItem into the
// end of the active list
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(listItem, curList, -1);
NS_ENSURE_SUCCESS(res, res);
}
}
return res;
}
nsresult
nsHTMLEditRules::WillRemoveList(Selection* aSelection,
bool aOrdered,
bool *aCancel,
bool *aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
// initialize out param
*aCancel = false;
*aHandled = true;
nsresult res = NormalizeSelection(aSelection);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
nsAutoSelectionReset selectionResetter(aSelection, mHTMLEditor);
nsCOMArray<nsIDOMRange> arrayOfRanges;
res = GetPromotedRanges(aSelection, arrayOfRanges, EditAction::makeList);
NS_ENSURE_SUCCESS(res, res);
// use these ranges to contruct a list of nodes to act on.
nsCOMArray<nsIDOMNode> arrayOfNodes;
res = GetListActionNodes(arrayOfNodes, false);
NS_ENSURE_SUCCESS(res, res);
// Remove all non-editable nodes. Leave them be.
int32_t listCount = arrayOfNodes.Count();
int32_t i;
for (i=listCount-1; i>=0; i--)
{
nsIDOMNode* testNode = arrayOfNodes[i];
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsEditable(testNode))
{
arrayOfNodes.RemoveObjectAt(i);
}
}
// reset list count
listCount = arrayOfNodes.Count();
// Only act on lists or list items in the array
nsCOMPtr<nsIDOMNode> curParent;
for (i=0; i<listCount; i++)
{
// here's where we actually figure out what to do
nsIDOMNode* curNode = arrayOfNodes[i];
int32_t offset;
curParent = nsEditor::GetNodeLocation(curNode, &offset);
if (nsHTMLEditUtils::IsListItem(curNode)) // unlist this listitem
{
bool bOutOfList;
do
{
res = PopListItem(curNode, &bOutOfList);
NS_ENSURE_SUCCESS(res, res);
} while (!bOutOfList); // keep popping it out until it's not in a list anymore
}
else if (nsHTMLEditUtils::IsList(curNode)) // node is a list, move list items out
{
res = RemoveListStructure(curNode);
NS_ENSURE_SUCCESS(res, res);
}
}
return res;
}
nsresult
nsHTMLEditRules::WillMakeDefListItem(Selection* aSelection,
const nsAString *aItemType,
bool aEntireList,
bool *aCancel,
bool *aHandled)
{
// for now we let WillMakeList handle this
NS_NAMED_LITERAL_STRING(listType, "dl");
return WillMakeList(aSelection, &listType, aEntireList, nullptr, aCancel, aHandled, aItemType);
}
nsresult
nsHTMLEditRules::WillMakeBasicBlock(Selection* aSelection,
const nsAString *aBlockType,
bool *aCancel,
bool *aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
// initialize out param
*aCancel = false;
*aHandled = false;
nsresult res = WillInsert(aSelection, aCancel);
NS_ENSURE_SUCCESS(res, res);
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = false;
res = NormalizeSelection(aSelection);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
nsAutoSelectionReset selectionResetter(aSelection, mHTMLEditor);
NS_ENSURE_STATE(mHTMLEditor);
nsAutoTxnsConserveSelection dontSpazMySelection(mHTMLEditor);
*aHandled = true;
nsString tString(*aBlockType);
// contruct a list of nodes to act on.
nsCOMArray<nsIDOMNode> arrayOfNodes;
res = GetNodesFromSelection(aSelection, EditAction::makeBasicBlock,
arrayOfNodes);
NS_ENSURE_SUCCESS(res, res);
// Remove all non-editable nodes. Leave them be.
int32_t listCount = arrayOfNodes.Count();
int32_t i;
for (i=listCount-1; i>=0; i--)
{
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsEditable(arrayOfNodes[i]))
{
arrayOfNodes.RemoveObjectAt(i);
}
}
// reset list count
listCount = arrayOfNodes.Count();
// if nothing visible in list, make an empty block
if (ListIsEmptyLine(arrayOfNodes))
{
nsCOMPtr<nsIDOMNode> parent, theBlock;
int32_t offset;
// get selection location
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
if (tString.EqualsLiteral("normal") ||
tString.IsEmpty() ) // we are removing blocks (going to "body text")
{
nsCOMPtr<nsIDOMNode> curBlock = parent;
if (!IsBlockNode(curBlock)) {
NS_ENSURE_STATE(mHTMLEditor);
curBlock = mHTMLEditor->GetBlockNodeParent(parent);
}
nsCOMPtr<nsIDOMNode> curBlockPar;
NS_ENSURE_TRUE(curBlock, NS_ERROR_NULL_POINTER);
curBlock->GetParentNode(getter_AddRefs(curBlockPar));
if (nsHTMLEditUtils::IsFormatNode(curBlock))
{
// if the first editable node after selection is a br, consume it. Otherwise
// it gets pushed into a following block after the split, which is visually bad.
nsCOMPtr<nsIDOMNode> brNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLNode(parent, offset, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
if (brNode && nsTextEditUtils::IsBreak(brNode))
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(brNode);
NS_ENSURE_SUCCESS(res, res);
}
// do the splits!
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep(curBlock, parent, offset, &offset, true);
NS_ENSURE_SUCCESS(res, res);
// put a br at the split point
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(curBlockPar, offset, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
// put selection at the split point
res = aSelection->Collapse(curBlockPar, offset);
selectionResetter.Abort(); // to prevent selection reseter from overriding us.
*aHandled = true;
}
// else nothing to do!
}
else // we are making a block
{
// consume a br, if needed
nsCOMPtr<nsIDOMNode> brNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLNode(parent, offset, address_of(brNode), true);
NS_ENSURE_SUCCESS(res, res);
if (brNode && nsTextEditUtils::IsBreak(brNode))
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(brNode);
NS_ENSURE_SUCCESS(res, res);
// we don't need to act on this node any more
arrayOfNodes.RemoveObject(brNode);
}
// make sure we can put a block here
res = SplitAsNeeded(aBlockType, address_of(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(*aBlockType, parent, offset, getter_AddRefs(theBlock));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = theBlock;
// delete anything that was in the list of nodes
for (int32_t j = arrayOfNodes.Count() - 1; j >= 0; --j)
{
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[0];
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(curNode);
NS_ENSURE_SUCCESS(res, res);
arrayOfNodes.RemoveObjectAt(0);
}
// put selection in new block
res = aSelection->Collapse(theBlock,0);
selectionResetter.Abort(); // to prevent selection reseter from overriding us.
*aHandled = true;
}
return res;
}
else
{
// Ok, now go through all the nodes and make the right kind of blocks,
// or whatever is approriate. Wohoo!
// Note: blockquote is handled a little differently
if (tString.EqualsLiteral("blockquote"))
res = MakeBlockquote(arrayOfNodes);
else if (tString.EqualsLiteral("normal") ||
tString.IsEmpty() )
res = RemoveBlockStyle(arrayOfNodes);
else
res = ApplyBlockStyle(arrayOfNodes, aBlockType);
return res;
}
return res;
}
nsresult
nsHTMLEditRules::DidMakeBasicBlock(nsISelection *aSelection,
nsRulesInfo *aInfo, nsresult aResult)
{
NS_ENSURE_TRUE(aSelection, NS_ERROR_NULL_POINTER);
// check for empty block. if so, put a moz br in it.
if (!aSelection->Collapsed()) {
return NS_OK;
}
nsCOMPtr<nsIDOMNode> parent;
int32_t offset;
nsresult res = nsEditor::GetStartNodeAndOffset(aSelection, getter_AddRefs(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
res = InsertMozBRIfNeeded(parent);
return res;
}
nsresult
nsHTMLEditRules::WillIndent(Selection* aSelection,
bool* aCancel, bool* aHandled)
{
nsresult res;
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->IsCSSEnabled()) {
res = WillCSSIndent(aSelection, aCancel, aHandled);
}
else {
res = WillHTMLIndent(aSelection, aCancel, aHandled);
}
return res;
}
nsresult
nsHTMLEditRules::WillCSSIndent(Selection* aSelection,
bool* aCancel, bool* aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
nsresult res = WillInsert(aSelection, aCancel);
NS_ENSURE_SUCCESS(res, res);
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = false;
*aHandled = true;
res = NormalizeSelection(aSelection);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
nsAutoSelectionReset selectionResetter(aSelection, mHTMLEditor);
nsCOMArray<nsIDOMRange> arrayOfRanges;
nsCOMArray<nsIDOMNode> arrayOfNodes;
// short circuit: detect case of collapsed selection inside an <li>.
// just sublist that <li>. This prevents bug 97797.
nsCOMPtr<nsIDOMNode> liNode;
if (aSelection->Collapsed()) {
nsCOMPtr<nsIDOMNode> node, block;
int32_t offset;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(node), &offset);
NS_ENSURE_SUCCESS(res, res);
if (IsBlockNode(node)) {
block = node;
} else {
NS_ENSURE_STATE(mHTMLEditor);
block = mHTMLEditor->GetBlockNodeParent(node);
}
if (block && nsHTMLEditUtils::IsListItem(block))
liNode = block;
}
if (liNode)
{
arrayOfNodes.AppendObject(liNode);
}
else
{
// convert the selection ranges into "promoted" selection ranges:
// this basically just expands the range to include the immediate
// block parent, and then further expands to include any ancestors
// whose children are all in the range
res = GetNodesFromSelection(aSelection, EditAction::indent, arrayOfNodes);
NS_ENSURE_SUCCESS(res, res);
}
NS_NAMED_LITERAL_STRING(quoteType, "blockquote");
// if nothing visible in list, make an empty block
if (ListIsEmptyLine(arrayOfNodes))
{
nsCOMPtr<nsIDOMNode> parent, theBlock;
int32_t offset;
nsAutoString quoteType(NS_LITERAL_STRING("div"));
// get selection location
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
// make sure we can put a block here
res = SplitAsNeeded(&quoteType, address_of(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(quoteType, parent, offset, getter_AddRefs(theBlock));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = theBlock;
RelativeChangeIndentationOfElementNode(theBlock, +1);
// delete anything that was in the list of nodes
for (int32_t j = arrayOfNodes.Count() - 1; j >= 0; --j)
{
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[0];
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(curNode);
NS_ENSURE_SUCCESS(res, res);
arrayOfNodes.RemoveObjectAt(0);
}
// put selection in new block
res = aSelection->Collapse(theBlock,0);
selectionResetter.Abort(); // to prevent selection reseter from overriding us.
*aHandled = true;
return res;
}
// Ok, now go through all the nodes and put them in a blockquote,
// or whatever is appropriate. Wohoo!
int32_t i;
nsCOMPtr<nsIDOMNode> curParent;
nsCOMPtr<nsIDOMNode> curQuote;
nsCOMPtr<nsIDOMNode> curList;
nsCOMPtr<nsIDOMNode> sibling;
int32_t listCount = arrayOfNodes.Count();
for (i=0; i<listCount; i++)
{
// here's where we actually figure out what to do
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[i];
// Ignore all non-editable nodes. Leave them be.
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsEditable(curNode)) continue;
int32_t offset;
curParent = nsEditor::GetNodeLocation(curNode, &offset);
// some logic for putting list items into nested lists...
if (nsHTMLEditUtils::IsList(curParent))
{
sibling = nullptr;
// Check for whether we should join a list that follows curNode.
// We do this if the next element is a list, and the list is of the
// same type (li/ol) as curNode was a part it.
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetNextHTMLSibling(curNode, address_of(sibling));
if (sibling && nsHTMLEditUtils::IsList(sibling))
{
nsAutoString curListTag, siblingListTag;
nsEditor::GetTagString(curParent, curListTag);
nsEditor::GetTagString(sibling, siblingListTag);
if (curListTag == siblingListTag)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, sibling, 0);
NS_ENSURE_SUCCESS(res, res);
continue;
}
}
// Check for whether we should join a list that preceeds curNode.
// We do this if the previous element is a list, and the list is of
// the same type (li/ol) as curNode was a part of.
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLSibling(curNode, address_of(sibling));
if (sibling && nsHTMLEditUtils::IsList(sibling))
{
nsAutoString curListTag, siblingListTag;
nsEditor::GetTagString(curParent, curListTag);
nsEditor::GetTagString(sibling, siblingListTag);
if (curListTag == siblingListTag)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, sibling, -1);
NS_ENSURE_SUCCESS(res, res);
continue;
}
}
sibling = nullptr;
// check to see if curList is still appropriate. Which it is if
// curNode is still right after it in the same list.
if (curList) {
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLSibling(curNode, address_of(sibling));
}
if (!curList || (sibling && sibling != curList))
{
nsAutoString listTag;
nsEditor::GetTagString(curParent,listTag);
ToLowerCase(listTag);
// create a new nested list of correct type
res = SplitAsNeeded(&listTag, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(listTag, curParent, offset, getter_AddRefs(curList));
NS_ENSURE_SUCCESS(res, res);
// curList is now the correct thing to put curNode in
// remember our new block for postprocessing
mNewBlock = curList;
}
// tuck the node into the end of the active list
uint32_t listLen;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetLengthOfDOMNode(curList, listLen);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curList, listLen);
NS_ENSURE_SUCCESS(res, res);
}
else // not a list item
{
if (IsBlockNode(curNode)) {
RelativeChangeIndentationOfElementNode(curNode, +1);
curQuote = nullptr;
}
else {
if (!curQuote)
{
// First, check that our element can contain a div.
if (!mEditor->CanContainTag(curParent, nsGkAtoms::div)) {
return NS_OK; // cancelled
}
NS_NAMED_LITERAL_STRING(divquoteType, "div");
res = SplitAsNeeded(&divquoteType, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(divquoteType, curParent, offset, getter_AddRefs(curQuote));
NS_ENSURE_SUCCESS(res, res);
RelativeChangeIndentationOfElementNode(curQuote, +1);
// remember our new block for postprocessing
mNewBlock = curQuote;
// curQuote is now the correct thing to put curNode in
}
// tuck the node into the end of the active blockquote
uint32_t quoteLen;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetLengthOfDOMNode(curQuote, quoteLen);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curQuote, quoteLen);
NS_ENSURE_SUCCESS(res, res);
}
}
}
return res;
}
nsresult
nsHTMLEditRules::WillHTMLIndent(Selection* aSelection,
bool* aCancel, bool* aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
nsresult res = WillInsert(aSelection, aCancel);
NS_ENSURE_SUCCESS(res, res);
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = false;
*aHandled = true;
res = NormalizeSelection(aSelection);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
nsAutoSelectionReset selectionResetter(aSelection, mHTMLEditor);
// convert the selection ranges into "promoted" selection ranges:
// this basically just expands the range to include the immediate
// block parent, and then further expands to include any ancestors
// whose children are all in the range
nsCOMArray<nsIDOMRange> arrayOfRanges;
res = GetPromotedRanges(aSelection, arrayOfRanges, EditAction::indent);
NS_ENSURE_SUCCESS(res, res);
// use these ranges to contruct a list of nodes to act on.
nsCOMArray<nsIDOMNode> arrayOfNodes;
res = GetNodesForOperation(arrayOfRanges, arrayOfNodes, EditAction::indent);
NS_ENSURE_SUCCESS(res, res);
NS_NAMED_LITERAL_STRING(quoteType, "blockquote");
// if nothing visible in list, make an empty block
if (ListIsEmptyLine(arrayOfNodes))
{
nsCOMPtr<nsIDOMNode> parent, theBlock;
int32_t offset;
// get selection location
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
// make sure we can put a block here
res = SplitAsNeeded(&quoteType, address_of(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(quoteType, parent, offset, getter_AddRefs(theBlock));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = theBlock;
// delete anything that was in the list of nodes
for (int32_t j = arrayOfNodes.Count() - 1; j >= 0; --j)
{
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[0];
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(curNode);
NS_ENSURE_SUCCESS(res, res);
arrayOfNodes.RemoveObjectAt(0);
}
// put selection in new block
res = aSelection->Collapse(theBlock,0);
selectionResetter.Abort(); // to prevent selection reseter from overriding us.
*aHandled = true;
return res;
}
// Ok, now go through all the nodes and put them in a blockquote,
// or whatever is appropriate. Wohoo!
int32_t i;
nsCOMPtr<nsIDOMNode> curParent, curQuote, curList, indentedLI, sibling;
int32_t listCount = arrayOfNodes.Count();
for (i=0; i<listCount; i++)
{
// here's where we actually figure out what to do
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[i];
// Ignore all non-editable nodes. Leave them be.
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsEditable(curNode)) continue;
int32_t offset;
curParent = nsEditor::GetNodeLocation(curNode, &offset);
// some logic for putting list items into nested lists...
if (nsHTMLEditUtils::IsList(curParent))
{
sibling = nullptr;
// Check for whether we should join a list that follows curNode.
// We do this if the next element is a list, and the list is of the
// same type (li/ol) as curNode was a part it.
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetNextHTMLSibling(curNode, address_of(sibling));
if (sibling && nsHTMLEditUtils::IsList(sibling))
{
nsAutoString curListTag, siblingListTag;
nsEditor::GetTagString(curParent, curListTag);
nsEditor::GetTagString(sibling, siblingListTag);
if (curListTag == siblingListTag)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, sibling, 0);
NS_ENSURE_SUCCESS(res, res);
continue;
}
}
// Check for whether we should join a list that preceeds curNode.
// We do this if the previous element is a list, and the list is of
// the same type (li/ol) as curNode was a part of.
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLSibling(curNode, address_of(sibling));
if (sibling && nsHTMLEditUtils::IsList(sibling))
{
nsAutoString curListTag, siblingListTag;
nsEditor::GetTagString(curParent, curListTag);
nsEditor::GetTagString(sibling, siblingListTag);
if (curListTag == siblingListTag)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, sibling, -1);
NS_ENSURE_SUCCESS(res, res);
continue;
}
}
sibling = nullptr;
// check to see if curList is still appropriate. Which it is if
// curNode is still right after it in the same list.
if (curList) {
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLSibling(curNode, address_of(sibling));
}
if (!curList || (sibling && sibling != curList) )
{
nsAutoString listTag;
nsEditor::GetTagString(curParent,listTag);
ToLowerCase(listTag);
// create a new nested list of correct type
res = SplitAsNeeded(&listTag, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(listTag, curParent, offset, getter_AddRefs(curList));
NS_ENSURE_SUCCESS(res, res);
// curList is now the correct thing to put curNode in
// remember our new block for postprocessing
mNewBlock = curList;
}
// tuck the node into the end of the active list
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curList, -1);
NS_ENSURE_SUCCESS(res, res);
// forget curQuote, if any
curQuote = nullptr;
}
else // not a list item, use blockquote?
{
// if we are inside a list item, we don't want to blockquote, we want
// to sublist the list item. We may have several nodes listed in the
// array of nodes to act on, that are in the same list item. Since
// we only want to indent that li once, we must keep track of the most
// recent indented list item, and not indent it if we find another node
// to act on that is still inside the same li.
nsCOMPtr<nsIDOMNode> listitem=IsInListItem(curNode);
if (listitem)
{
if (indentedLI == listitem) continue; // already indented this list item
curParent = nsEditor::GetNodeLocation(listitem, &offset);
// check to see if curList is still appropriate. Which it is if
// curNode is still right after it in the same list.
if (curList)
{
sibling = nullptr;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLSibling(curNode, address_of(sibling));
}
if (!curList || (sibling && sibling != curList) )
{
nsAutoString listTag;
nsEditor::GetTagString(curParent,listTag);
ToLowerCase(listTag);
// create a new nested list of correct type
res = SplitAsNeeded(&listTag, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(listTag, curParent, offset, getter_AddRefs(curList));
NS_ENSURE_SUCCESS(res, res);
}
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(listitem, curList, -1);
NS_ENSURE_SUCCESS(res, res);
// remember we indented this li
indentedLI = listitem;
}
else
{
// need to make a blockquote to put things in if we haven't already,
// or if this node doesn't go in blockquote we used earlier.
// One reason it might not go in prio blockquote is if we are now
// in a different table cell.
if (curQuote && InDifferentTableElements(curQuote, curNode)) {
curQuote = nullptr;
}
if (!curQuote)
{
// First, check that our element can contain a blockquote.
if (!mEditor->CanContainTag(curParent, nsGkAtoms::blockquote)) {
return NS_OK; // cancelled
}
res = SplitAsNeeded(&quoteType, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(quoteType, curParent, offset, getter_AddRefs(curQuote));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = curQuote;
// curQuote is now the correct thing to put curNode in
}
// tuck the node into the end of the active blockquote
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curQuote, -1);
NS_ENSURE_SUCCESS(res, res);
// forget curList, if any
curList = nullptr;
}
}
}
return res;
}
nsresult
nsHTMLEditRules::WillOutdent(Selection* aSelection,
bool* aCancel, bool* aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
// initialize out param
*aCancel = false;
*aHandled = true;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> rememberedLeftBQ, rememberedRightBQ;
NS_ENSURE_STATE(mHTMLEditor);
bool useCSS = mHTMLEditor->IsCSSEnabled();
res = NormalizeSelection(aSelection);
NS_ENSURE_SUCCESS(res, res);
// some scoping for selection resetting - we may need to tweak it
{
NS_ENSURE_STATE(mHTMLEditor);
nsAutoSelectionReset selectionResetter(aSelection, mHTMLEditor);
// convert the selection ranges into "promoted" selection ranges:
// this basically just expands the range to include the immediate
// block parent, and then further expands to include any ancestors
// whose children are all in the range
nsCOMArray<nsIDOMNode> arrayOfNodes;
res = GetNodesFromSelection(aSelection, EditAction::outdent,
arrayOfNodes);
NS_ENSURE_SUCCESS(res, res);
// Ok, now go through all the nodes and remove a level of blockquoting,
// or whatever is appropriate. Wohoo!
nsCOMPtr<nsIDOMNode> curBlockQuote, firstBQChild, lastBQChild;
bool curBlockQuoteIsIndentedWithCSS = false;
int32_t listCount = arrayOfNodes.Count();
int32_t i;
nsCOMPtr<nsIDOMNode> curParent;
for (i=0; i<listCount; i++)
{
// here's where we actually figure out what to do
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[i];
int32_t offset;
curParent = nsEditor::GetNodeLocation(curNode, &offset);
// is it a blockquote?
if (nsHTMLEditUtils::IsBlockquote(curNode))
{
// if it is a blockquote, remove it.
// So we need to finish up dealng with any curBlockQuote first.
if (curBlockQuote)
{
res = OutdentPartOfBlock(curBlockQuote, firstBQChild, lastBQChild,
curBlockQuoteIsIndentedWithCSS,
address_of(rememberedLeftBQ),
address_of(rememberedRightBQ));
NS_ENSURE_SUCCESS(res, res);
curBlockQuote = 0; firstBQChild = 0; lastBQChild = 0;
curBlockQuoteIsIndentedWithCSS = false;
}
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveBlockContainer(curNode);
NS_ENSURE_SUCCESS(res, res);
continue;
}
// is it a block with a 'margin' property?
if (useCSS && IsBlockNode(curNode))
{
NS_ENSURE_STATE(mHTMLEditor);
nsIAtom* marginProperty = MarginPropertyAtomForIndent(mHTMLEditor->mHTMLCSSUtils, curNode);
nsAutoString value;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->GetSpecifiedProperty(curNode, marginProperty, value);
float f;
nsCOMPtr<nsIAtom> unit;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->ParseLength(value, &f, getter_AddRefs(unit));
if (f > 0)
{
RelativeChangeIndentationOfElementNode(curNode, -1);
continue;
}
}
// is it a list item?
if (nsHTMLEditUtils::IsListItem(curNode))
{
// if it is a list item, that means we are not outdenting whole list.
// So we need to finish up dealing with any curBlockQuote, and then
// pop this list item.
if (curBlockQuote)
{
res = OutdentPartOfBlock(curBlockQuote, firstBQChild, lastBQChild,
curBlockQuoteIsIndentedWithCSS,
address_of(rememberedLeftBQ),
address_of(rememberedRightBQ));
NS_ENSURE_SUCCESS(res, res);
curBlockQuote = 0; firstBQChild = 0; lastBQChild = 0;
curBlockQuoteIsIndentedWithCSS = false;
}
bool bOutOfList;
res = PopListItem(curNode, &bOutOfList);
NS_ENSURE_SUCCESS(res, res);
continue;
}
// do we have a blockquote that we are already committed to removing?
if (curBlockQuote)
{
// if so, is this node a descendant?
if (nsEditorUtils::IsDescendantOf(curNode, curBlockQuote))
{
lastBQChild = curNode;
continue; // then we don't need to do anything different for this node
}
else
{
// otherwise, we have progressed beyond end of curBlockQuote,
// so lets handle it now. We need to remove the portion of
// curBlockQuote that contains [firstBQChild - lastBQChild].
res = OutdentPartOfBlock(curBlockQuote, firstBQChild, lastBQChild,
curBlockQuoteIsIndentedWithCSS,
address_of(rememberedLeftBQ),
address_of(rememberedRightBQ));
NS_ENSURE_SUCCESS(res, res);
curBlockQuote = 0; firstBQChild = 0; lastBQChild = 0;
curBlockQuoteIsIndentedWithCSS = false;
// fall out and handle curNode
}
}
// are we inside a blockquote?
nsCOMPtr<nsIDOMNode> n = curNode;
nsCOMPtr<nsIDOMNode> tmp;
curBlockQuoteIsIndentedWithCSS = false;
// keep looking up the hierarchy as long as we don't hit the body or the
// active editing host or a table element (other than an entire table)
while (!nsTextEditUtils::IsBody(n) && mHTMLEditor &&
mHTMLEditor->IsDescendantOfEditorRoot(n)
&& (nsHTMLEditUtils::IsTable(n) || !nsHTMLEditUtils::IsTableElement(n)))
{
n->GetParentNode(getter_AddRefs(tmp));
if (!tmp) {
break;
}
n = tmp;
if (nsHTMLEditUtils::IsBlockquote(n))
{
// if so, remember it, and remember first node we are taking out of it.
curBlockQuote = n;
firstBQChild = curNode;
lastBQChild = curNode;
break;
}
else if (useCSS)
{
NS_ENSURE_STATE(mHTMLEditor);
nsIAtom* marginProperty = MarginPropertyAtomForIndent(mHTMLEditor->mHTMLCSSUtils, curNode);
nsAutoString value;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->GetSpecifiedProperty(n, marginProperty, value);
float f;
nsCOMPtr<nsIAtom> unit;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->ParseLength(value, &f, getter_AddRefs(unit));
if (f > 0 && !(nsHTMLEditUtils::IsList(curParent) && nsHTMLEditUtils::IsList(curNode)))
{
curBlockQuote = n;
firstBQChild = curNode;
lastBQChild = curNode;
curBlockQuoteIsIndentedWithCSS = true;
break;
}
}
}
if (!curBlockQuote)
{
// could not find an enclosing blockquote for this node. handle list cases.
if (nsHTMLEditUtils::IsList(curParent)) // move node out of list
{
if (nsHTMLEditUtils::IsList(curNode)) // just unwrap this sublist
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveBlockContainer(curNode);
NS_ENSURE_SUCCESS(res, res);
}
// handled list item case above
}
else if (nsHTMLEditUtils::IsList(curNode)) // node is a list, but parent is non-list: move list items out
{
nsCOMPtr<nsIDOMNode> child;
curNode->GetLastChild(getter_AddRefs(child));
while (child)
{
if (nsHTMLEditUtils::IsListItem(child))
{
bool bOutOfList;
res = PopListItem(child, &bOutOfList);
NS_ENSURE_SUCCESS(res, res);
}
else if (nsHTMLEditUtils::IsList(child))
{
// We have an embedded list, so move it out from under the
// parent list. Be sure to put it after the parent list
// because this loop iterates backwards through the parent's
// list of children.
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(child, curParent, offset + 1);
NS_ENSURE_SUCCESS(res, res);
}
else
{
// delete any non- list items for now
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(child);
NS_ENSURE_SUCCESS(res, res);
}
curNode->GetLastChild(getter_AddRefs(child));
}
// delete the now-empty list
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveBlockContainer(curNode);
NS_ENSURE_SUCCESS(res, res);
}
else if (useCSS) {
nsCOMPtr<nsIDOMElement> element;
nsCOMPtr<nsIDOMText> textNode = do_QueryInterface(curNode);
if (textNode) {
// We want to outdent the parent of text nodes
nsCOMPtr<nsIDOMNode> parent;
textNode->GetParentNode(getter_AddRefs(parent));
element = do_QueryInterface(parent);
} else {
element = do_QueryInterface(curNode);
}
if (element) {
RelativeChangeIndentationOfElementNode(element, -1);
}
}
}
}
if (curBlockQuote)
{
// we have a blockquote we haven't finished handling
res = OutdentPartOfBlock(curBlockQuote, firstBQChild, lastBQChild,
curBlockQuoteIsIndentedWithCSS,
address_of(rememberedLeftBQ),
address_of(rememberedRightBQ));
NS_ENSURE_SUCCESS(res, res);
}
}
// make sure selection didn't stick to last piece of content in old bq
// (only a problem for collapsed selections)
if (rememberedLeftBQ || rememberedRightBQ) {
if (aSelection->Collapsed()) {
// push selection past end of rememberedLeftBQ
nsCOMPtr<nsIDOMNode> sNode;
int32_t sOffset;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(sNode), &sOffset);
if (rememberedLeftBQ &&
((sNode == rememberedLeftBQ) || nsEditorUtils::IsDescendantOf(sNode, rememberedLeftBQ)))
{
// selection is inside rememberedLeftBQ - push it past it.
sNode = nsEditor::GetNodeLocation(rememberedLeftBQ, &sOffset);
sOffset++;
aSelection->Collapse(sNode, sOffset);
}
// and pull selection before beginning of rememberedRightBQ
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(sNode), &sOffset);
if (rememberedRightBQ &&
((sNode == rememberedRightBQ) || nsEditorUtils::IsDescendantOf(sNode, rememberedRightBQ)))
{
// selection is inside rememberedRightBQ - push it before it.
sNode = nsEditor::GetNodeLocation(rememberedRightBQ, &sOffset);
aSelection->Collapse(sNode, sOffset);
}
}
return NS_OK;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// RemovePartOfBlock: split aBlock and move aStartChild to aEndChild out
// of aBlock. return left side of block (if any) in
// aLeftNode. return right side of block (if any) in
// aRightNode.
//
nsresult
nsHTMLEditRules::RemovePartOfBlock(nsIDOMNode *aBlock,
nsIDOMNode *aStartChild,
nsIDOMNode *aEndChild,
nsCOMPtr<nsIDOMNode> *aLeftNode,
nsCOMPtr<nsIDOMNode> *aRightNode)
{
nsCOMPtr<nsIDOMNode> middleNode;
nsresult res = SplitBlock(aBlock, aStartChild, aEndChild,
aLeftNode, aRightNode,
address_of(middleNode));
NS_ENSURE_SUCCESS(res, res);
// get rid of part of blockquote we are outdenting
NS_ENSURE_STATE(mHTMLEditor);
return mHTMLEditor->RemoveBlockContainer(aBlock);
}
nsresult
nsHTMLEditRules::SplitBlock(nsIDOMNode *aBlock,
nsIDOMNode *aStartChild,
nsIDOMNode *aEndChild,
nsCOMPtr<nsIDOMNode> *aLeftNode,
nsCOMPtr<nsIDOMNode> *aRightNode,
nsCOMPtr<nsIDOMNode> *aMiddleNode)
{
NS_ENSURE_TRUE(aBlock && aStartChild && aEndChild, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> leftNode, rightNode;
int32_t startOffset, endOffset, offset;
nsresult res;
// get split point location
nsCOMPtr<nsIDOMNode> startParent = nsEditor::GetNodeLocation(aStartChild, &startOffset);
// do the splits!
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep(aBlock, startParent, startOffset, &offset,
true, address_of(leftNode), address_of(rightNode));
NS_ENSURE_SUCCESS(res, res);
if (rightNode) aBlock = rightNode;
// remember left portion of block if caller requested
if (aLeftNode)
*aLeftNode = leftNode;
// get split point location
nsCOMPtr<nsIDOMNode> endParent = nsEditor::GetNodeLocation(aEndChild, &endOffset);
endOffset++; // want to be after lastBQChild
// do the splits!
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep(aBlock, endParent, endOffset, &offset,
true, address_of(leftNode), address_of(rightNode));
NS_ENSURE_SUCCESS(res, res);
if (leftNode) aBlock = leftNode;
// remember right portion of block if caller requested
if (aRightNode)
*aRightNode = rightNode;
if (aMiddleNode)
*aMiddleNode = aBlock;
return NS_OK;
}
nsresult
nsHTMLEditRules::OutdentPartOfBlock(nsIDOMNode *aBlock,
nsIDOMNode *aStartChild,
nsIDOMNode *aEndChild,
bool aIsBlockIndentedWithCSS,
nsCOMPtr<nsIDOMNode> *aLeftNode,
nsCOMPtr<nsIDOMNode> *aRightNode)
{
nsCOMPtr<nsIDOMNode> middleNode;
nsresult res = SplitBlock(aBlock, aStartChild, aEndChild,
aLeftNode,
aRightNode,
address_of(middleNode));
NS_ENSURE_SUCCESS(res, res);
if (aIsBlockIndentedWithCSS) {
res = RelativeChangeIndentationOfElementNode(middleNode, -1);
} else {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveBlockContainer(middleNode);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// ConvertListType: convert list type and list item type.
//
//
nsresult
nsHTMLEditRules::ConvertListType(nsIDOMNode* aList,
nsCOMPtr<nsIDOMNode>* outList,
nsIAtom* aListType,
nsIAtom* aItemType)
{
MOZ_ASSERT(aListType);
MOZ_ASSERT(aItemType);
NS_ENSURE_TRUE(aList && outList, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsINode> list = do_QueryInterface(aList);
NS_ENSURE_STATE(list);
nsCOMPtr<dom::Element> outNode;
nsresult rv = ConvertListType(list, getter_AddRefs(outNode), aListType, aItemType);
*outList = outNode ? outNode->AsDOMNode() : nullptr;
return rv;
}
nsresult
nsHTMLEditRules::ConvertListType(nsINode* aList,
dom::Element** aOutList,
nsIAtom* aListType,
nsIAtom* aItemType)
{
MOZ_ASSERT(aList);
MOZ_ASSERT(aOutList);
MOZ_ASSERT(aListType);
MOZ_ASSERT(aItemType);
nsCOMPtr<nsINode> child = aList->GetFirstChild();
while (child)
{
if (child->IsElement()) {
dom::Element* element = child->AsElement();
if (nsHTMLEditUtils::IsListItem(element) && !element->IsHTML(aItemType)) {
nsCOMPtr<dom::Element> temp;
nsresult rv =
mHTMLEditor->ReplaceContainer(child, getter_AddRefs(temp),
nsDependentAtomString(aItemType));
NS_ENSURE_SUCCESS(rv, rv);
child = temp.forget();
} else if (nsHTMLEditUtils::IsList(element) &&
!element->IsHTML(aListType)) {
nsCOMPtr<dom::Element> temp;
nsresult rv =
ConvertListType(child, getter_AddRefs(temp), aListType, aItemType);
NS_ENSURE_SUCCESS(rv, rv);
child = temp.forget();
}
}
child = child->GetNextSibling();
}
if (aList->IsElement() && aList->AsElement()->IsHTML(aListType)) {
nsCOMPtr<dom::Element> list = aList->AsElement();
list.forget(aOutList);
return NS_OK;
}
return mHTMLEditor->ReplaceContainer(aList, aOutList,
nsDependentAtomString(aListType));
}
///////////////////////////////////////////////////////////////////////////
// CreateStyleForInsertText: take care of clearing and setting appropriate
// style nodes for text insertion.
//
//
nsresult
nsHTMLEditRules::CreateStyleForInsertText(nsISelection *aSelection,
nsIDOMDocument *aDoc)
{
MOZ_ASSERT(aSelection && aDoc && mHTMLEditor->mTypeInState);
bool weDidSomething = false;
nsCOMPtr<nsIDOMNode> node, tmp;
int32_t offset;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetStartNodeAndOffset(aSelection,
getter_AddRefs(node),
&offset);
NS_ENSURE_SUCCESS(res, res);
// next examine our present style and make sure default styles are either
// present or explicitly overridden. If neither, add the default style to
// the TypeInState
int32_t length = mHTMLEditor->mDefaultStyles.Length();
for (int32_t j = 0; j < length; j++) {
PropItem* propItem = mHTMLEditor->mDefaultStyles[j];
MOZ_ASSERT(propItem);
bool bFirst, bAny, bAll;
// GetInlineProperty also examine TypeInState. The only gotcha here is
// that a cleared property looks like an unset property. For now I'm
// assuming that's not a problem: that default styles will always be
// multivalue styles (like font face or size) where clearing the style
// means we want to go back to the default. If we ever wanted a "toggle"
// style like bold for a default, though, I'll have to add code to detect
// the difference between unset and explicitly cleared, else user would
// never be able to unbold, for instance.
nsAutoString curValue;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetInlinePropertyBase(propItem->tag, &propItem->attr,
nullptr, &bFirst, &bAny, &bAll,
&curValue, false);
NS_ENSURE_SUCCESS(res, res);
if (!bAny) {
// no style set for this prop/attr
mHTMLEditor->mTypeInState->SetProp(propItem->tag, propItem->attr,
propItem->value);
}
}
nsCOMPtr<nsIDOMElement> rootElement;
res = aDoc->GetDocumentElement(getter_AddRefs(rootElement));
NS_ENSURE_SUCCESS(res, res);
// process clearing any styles first
nsAutoPtr<PropItem> item(mHTMLEditor->mTypeInState->TakeClearProperty());
while (item && node != rootElement) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->ClearStyle(address_of(node), &offset,
item->tag, &item->attr);
NS_ENSURE_SUCCESS(res, res);
item = mHTMLEditor->mTypeInState->TakeClearProperty();
weDidSomething = true;
}
// then process setting any styles
int32_t relFontSize = mHTMLEditor->mTypeInState->TakeRelativeFontSize();
item = mHTMLEditor->mTypeInState->TakeSetProperty();
if (item || relFontSize) {
// we have at least one style to add; make a new text node to insert style
// nodes above.
if (mHTMLEditor->IsTextNode(node)) {
// if we are in a text node, split it
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep(node, node, offset, &offset);
NS_ENSURE_SUCCESS(res, res);
node->GetParentNode(getter_AddRefs(tmp));
node = tmp;
}
if (!mHTMLEditor->IsContainer(node)) {
return NS_OK;
}
nsCOMPtr<nsIDOMNode> newNode;
nsCOMPtr<nsIDOMText> nodeAsText;
res = aDoc->CreateTextNode(EmptyString(), getter_AddRefs(nodeAsText));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(nodeAsText, NS_ERROR_NULL_POINTER);
newNode = do_QueryInterface(nodeAsText);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->InsertNode(newNode, node, offset);
NS_ENSURE_SUCCESS(res, res);
node = newNode;
offset = 0;
weDidSomething = true;
if (relFontSize) {
// dir indicated bigger versus smaller. 1 = bigger, -1 = smaller
int32_t dir = relFontSize > 0 ? 1 : -1;
for (int32_t j = 0; j < DeprecatedAbs(relFontSize); j++) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RelativeFontChangeOnTextNode(dir, nodeAsText,
0, -1);
NS_ENSURE_SUCCESS(res, res);
}
}
while (item) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SetInlinePropertyOnNode(node, item->tag, &item->attr,
&item->value);
NS_ENSURE_SUCCESS(res, res);
item = mHTMLEditor->mTypeInState->TakeSetProperty();
}
}
if (weDidSomething) {
return aSelection->Collapse(node, offset);
}
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////
// IsEmptyBlock: figure out if aNode is (or is inside) an empty block.
// A block can have children and still be considered empty,
// if the children are empty or non-editable.
//
nsresult
nsHTMLEditRules::IsEmptyBlock(nsIDOMNode *aNode,
bool *outIsEmptyBlock,
bool aMozBRDoesntCount,
bool aListItemsNotEmpty)
{
NS_ENSURE_TRUE(aNode && outIsEmptyBlock, NS_ERROR_NULL_POINTER);
*outIsEmptyBlock = true;
// nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> nodeToTest;
if (IsBlockNode(aNode)) nodeToTest = do_QueryInterface(aNode);
// else nsCOMPtr<nsIDOMElement> block;
// looks like I forgot to finish this. Wonder what I was going to do?
NS_ENSURE_TRUE(nodeToTest, NS_ERROR_NULL_POINTER);
return mHTMLEditor->IsEmptyNode(nodeToTest, outIsEmptyBlock,
aMozBRDoesntCount, aListItemsNotEmpty);
}
nsresult
nsHTMLEditRules::WillAlign(Selection* aSelection,
const nsAString *alignType,
bool *aCancel,
bool *aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
nsresult res = WillInsert(aSelection, aCancel);
NS_ENSURE_SUCCESS(res, res);
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = false;
*aHandled = false;
res = NormalizeSelection(aSelection);
NS_ENSURE_SUCCESS(res, res);
nsAutoSelectionReset selectionResetter(aSelection, mHTMLEditor);
// convert the selection ranges into "promoted" selection ranges:
// this basically just expands the range to include the immediate
// block parent, and then further expands to include any ancestors
// whose children are all in the range
*aHandled = true;
nsCOMArray<nsIDOMNode> arrayOfNodes;
res = GetNodesFromSelection(aSelection, EditAction::align, arrayOfNodes);
NS_ENSURE_SUCCESS(res, res);
// if we don't have any nodes, or we have only a single br, then we are
// creating an empty alignment div. We have to do some different things for these.
bool emptyDiv = false;
int32_t listCount = arrayOfNodes.Count();
if (!listCount) emptyDiv = true;
if (listCount == 1)
{
nsCOMPtr<nsIDOMNode> theNode = arrayOfNodes[0];
if (nsHTMLEditUtils::SupportsAlignAttr(theNode))
{
// the node is a table element, an horiz rule, a paragraph, a div
// or a section header; in HTML 4, it can directly carry the ALIGN
// attribute and we don't need to make a div! If we are in CSS mode,
// all the work is done in AlignBlock
nsCOMPtr<nsIDOMElement> theElem = do_QueryInterface(theNode);
res = AlignBlock(theElem, alignType, true);
NS_ENSURE_SUCCESS(res, res);
return NS_OK;
}
if (nsTextEditUtils::IsBreak(theNode))
{
// The special case emptyDiv code (below) that consumes BRs can
// cause tables to split if the start node of the selection is
// not in a table cell or caption, for example parent is a <tr>.
// Avoid this unnecessary splitting if possible by leaving emptyDiv
// FALSE so that we fall through to the normal case alignment code.
//
// XXX: It seems a little error prone for the emptyDiv special
// case code to assume that the start node of the selection
// is the parent of the single node in the arrayOfNodes, as
// the paragraph above points out. Do we rely on the selection
// start node because of the fact that arrayOfNodes can be empty?
// We should probably revisit this issue. - kin
nsCOMPtr<nsIDOMNode> parent;
int32_t offset;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(parent), &offset);
if (!nsHTMLEditUtils::IsTableElement(parent) || nsHTMLEditUtils::IsTableCellOrCaption(parent))
emptyDiv = true;
}
}
if (emptyDiv)
{
int32_t offset;
nsCOMPtr<nsIDOMNode> brNode, parent, theDiv, sib;
NS_NAMED_LITERAL_STRING(divType, "div");
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
res = SplitAsNeeded(&divType, address_of(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
// consume a trailing br, if any. This is to keep an alignment from
// creating extra lines, if possible.
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLNode(parent, offset, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
if (brNode && nsTextEditUtils::IsBreak(brNode))
{
// making use of html structure... if next node after where
// we are putting our div is not a block, then the br we
// found is in same block we are, so its safe to consume it.
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLSibling(parent, offset, address_of(sib));
NS_ENSURE_SUCCESS(res, res);
if (!IsBlockNode(sib))
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(brNode);
NS_ENSURE_SUCCESS(res, res);
}
}
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(divType, parent, offset, getter_AddRefs(theDiv));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = theDiv;
// set up the alignment on the div, using HTML or CSS
nsCOMPtr<nsIDOMElement> divElem = do_QueryInterface(theDiv);
res = AlignBlock(divElem, alignType, true);
NS_ENSURE_SUCCESS(res, res);
*aHandled = true;
// put in a moz-br so that it won't get deleted
res = CreateMozBR(theDiv, 0);
NS_ENSURE_SUCCESS(res, res);
res = aSelection->Collapse(theDiv, 0);
selectionResetter.Abort(); // don't reset our selection in this case.
return res;
}
// Next we detect all the transitions in the array, where a transition
// means that adjacent nodes in the array don't have the same parent.
nsTArray<bool> transitionList;
res = MakeTransitionList(arrayOfNodes, transitionList);
NS_ENSURE_SUCCESS(res, res);
// Ok, now go through all the nodes and give them an align attrib or put them in a div,
// or whatever is appropriate. Wohoo!
nsCOMPtr<nsIDOMNode> curParent;
nsCOMPtr<nsIDOMNode> curDiv;
bool useCSS = mHTMLEditor->IsCSSEnabled();
for (int32_t i = 0; i < listCount; ++i) {
// here's where we actually figure out what to do
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[i];
// Ignore all non-editable nodes. Leave them be.
if (!mHTMLEditor->IsEditable(curNode)) continue;
int32_t offset;
curParent = nsEditor::GetNodeLocation(curNode, &offset);
// the node is a table element, an horiz rule, a paragraph, a div
// or a section header; in HTML 4, it can directly carry the ALIGN
// attribute and we don't need to nest it, just set the alignment.
// In CSS, assign the corresponding CSS styles in AlignBlock
if (nsHTMLEditUtils::SupportsAlignAttr(curNode))
{
nsCOMPtr<nsIDOMElement> curElem = do_QueryInterface(curNode);
res = AlignBlock(curElem, alignType, false);
NS_ENSURE_SUCCESS(res, res);
// clear out curDiv so that we don't put nodes after this one into it
curDiv = 0;
continue;
}
// Skip insignificant formatting text nodes to prevent
// unnecessary structure splitting!
bool isEmptyTextNode = false;
if (nsEditor::IsTextNode(curNode) &&
((nsHTMLEditUtils::IsTableElement(curParent) && !nsHTMLEditUtils::IsTableCellOrCaption(curParent)) ||
nsHTMLEditUtils::IsList(curParent) ||
(NS_SUCCEEDED(mHTMLEditor->IsEmptyNode(curNode, &isEmptyTextNode)) && isEmptyTextNode)))
continue;
// if it's a list item, or a list
// inside a list, forget any "current" div, and instead put divs inside
// the appropriate block (td, li, etc)
if ( nsHTMLEditUtils::IsListItem(curNode)
|| nsHTMLEditUtils::IsList(curNode))
{
res = RemoveAlignment(curNode, *alignType, true);
NS_ENSURE_SUCCESS(res, res);
if (useCSS) {
nsCOMPtr<nsIDOMElement> curElem = do_QueryInterface(curNode);
NS_NAMED_LITERAL_STRING(attrName, "align");
int32_t count;
mHTMLEditor->mHTMLCSSUtils->SetCSSEquivalentToHTMLStyle(curNode, nullptr,
&attrName, alignType,
&count, false);
curDiv = 0;
continue;
}
else if (nsHTMLEditUtils::IsList(curParent)) {
// if we don't use CSS, add a contraint to list element : they have
// to be inside another list, ie >= second level of nesting
res = AlignInnerBlocks(curNode, alignType);
NS_ENSURE_SUCCESS(res, res);
curDiv = 0;
continue;
}
// clear out curDiv so that we don't put nodes after this one into it
}
// need to make a div to put things in if we haven't already,
// or if this node doesn't go in div we used earlier.
if (!curDiv || transitionList[i])
{
// First, check that our element can contain a div.
NS_NAMED_LITERAL_STRING(divType, "div");
if (!mEditor->CanContainTag(curParent, nsGkAtoms::div)) {
return NS_OK; // cancelled
}
res = SplitAsNeeded(&divType, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(divType, curParent, offset, getter_AddRefs(curDiv));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = curDiv;
// set up the alignment on the div
nsCOMPtr<nsIDOMElement> divElem = do_QueryInterface(curDiv);
res = AlignBlock(divElem, alignType, true);
//nsAutoString attr(NS_LITERAL_STRING("align"));
//res = mHTMLEditor->SetAttribute(divElem, attr, *alignType);
//NS_ENSURE_SUCCESS(res, res);
// curDiv is now the correct thing to put curNode in
}
// tuck the node into the end of the active div
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curDiv, -1);
NS_ENSURE_SUCCESS(res, res);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// AlignInnerBlocks: align inside table cells or list items
//
nsresult
nsHTMLEditRules::AlignInnerBlocks(nsIDOMNode *aNode, const nsAString *alignType)
{
NS_ENSURE_TRUE(aNode && alignType, NS_ERROR_NULL_POINTER);
nsresult res;
// gather list of table cells or list items
nsCOMArray<nsIDOMNode> arrayOfNodes;
nsTableCellAndListItemFunctor functor;
nsDOMIterator iter;
res = iter.Init(aNode);
NS_ENSURE_SUCCESS(res, res);
res = iter.AppendList(functor, arrayOfNodes);
NS_ENSURE_SUCCESS(res, res);
// now that we have the list, align their contents as requested
int32_t listCount = arrayOfNodes.Count();
int32_t j;
for (j = 0; j < listCount; j++)
{
nsIDOMNode* node = arrayOfNodes[0];
res = AlignBlockContents(node, alignType);
NS_ENSURE_SUCCESS(res, res);
arrayOfNodes.RemoveObjectAt(0);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// AlignBlockContents: align contents of a block element
//
nsresult
nsHTMLEditRules::AlignBlockContents(nsIDOMNode *aNode, const nsAString *alignType)
{
NS_ENSURE_TRUE(aNode && alignType, NS_ERROR_NULL_POINTER);
nsresult res;
nsCOMPtr <nsIDOMNode> firstChild, lastChild, divNode;
bool useCSS = mHTMLEditor->IsCSSEnabled();
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetFirstEditableChild(aNode, address_of(firstChild));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetLastEditableChild(aNode, address_of(lastChild));
NS_ENSURE_SUCCESS(res, res);
NS_NAMED_LITERAL_STRING(attr, "align");
if (!firstChild)
{
// this cell has no content, nothing to align
}
else if ((firstChild==lastChild) && nsHTMLEditUtils::IsDiv(firstChild))
{
// the cell already has a div containing all of its content: just
// act on this div.
nsCOMPtr<nsIDOMElement> divElem = do_QueryInterface(firstChild);
if (useCSS) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SetAttributeOrEquivalent(divElem, attr, *alignType, false);
}
else {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SetAttribute(divElem, attr, *alignType);
}
NS_ENSURE_SUCCESS(res, res);
}
else
{
// else we need to put in a div, set the alignment, and toss in all the children
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(NS_LITERAL_STRING("div"), aNode, 0, getter_AddRefs(divNode));
NS_ENSURE_SUCCESS(res, res);
// set up the alignment on the div
nsCOMPtr<nsIDOMElement> divElem = do_QueryInterface(divNode);
if (useCSS) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SetAttributeOrEquivalent(divElem, attr, *alignType, false);
}
else {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SetAttribute(divElem, attr, *alignType);
}
NS_ENSURE_SUCCESS(res, res);
// tuck the children into the end of the active div
while (lastChild && (lastChild != divNode))
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(lastChild, divNode, 0);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetLastEditableChild(aNode, address_of(lastChild));
NS_ENSURE_SUCCESS(res, res);
}
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// CheckForEmptyBlock: Called by WillDeleteSelection to detect and handle
// case of deleting from inside an empty block.
//
nsresult
nsHTMLEditRules::CheckForEmptyBlock(nsIDOMNode *aStartNode,
nsIDOMNode *aBodyNode,
nsISelection *aSelection,
bool *aHandled)
{
// If the editing host is an inline element, bail out early.
if (IsInlineNode(aBodyNode)) {
return NS_OK;
}
// if we are inside an empty block, delete it.
// Note: do NOT delete table elements this way.
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> block, emptyBlock;
if (IsBlockNode(aStartNode))
block = aStartNode;
else
block = mHTMLEditor->GetBlockNodeParent(aStartNode);
bool bIsEmptyNode;
if (block != aBodyNode) // efficiency hack. avoiding IsEmptyNode() call when in body
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsEmptyNode(block, &bIsEmptyNode, true, false);
NS_ENSURE_SUCCESS(res, res);
while (bIsEmptyNode && !nsHTMLEditUtils::IsTableElement(block) && (block != aBodyNode))
{
emptyBlock = block;
block = mHTMLEditor->GetBlockNodeParent(emptyBlock);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsEmptyNode(block, &bIsEmptyNode, true, false);
NS_ENSURE_SUCCESS(res, res);
}
}
nsCOMPtr<nsIContent> emptyContent = do_QueryInterface(emptyBlock);
if (emptyBlock && emptyContent->IsEditable())
{
int32_t offset;
nsCOMPtr<nsIDOMNode> blockParent = nsEditor::GetNodeLocation(emptyBlock, &offset);
NS_ENSURE_TRUE(blockParent && offset >= 0, NS_ERROR_FAILURE);
if (nsHTMLEditUtils::IsListItem(emptyBlock))
{
// are we the first list item in the list?
bool bIsFirst;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsFirstEditableChild(emptyBlock, &bIsFirst);
NS_ENSURE_SUCCESS(res, res);
if (bIsFirst)
{
int32_t listOffset;
nsCOMPtr<nsIDOMNode> listParent = nsEditor::GetNodeLocation(blockParent,
&listOffset);
NS_ENSURE_TRUE(listParent && listOffset >= 0, NS_ERROR_FAILURE);
// if we are a sublist, skip the br creation
if (!nsHTMLEditUtils::IsList(listParent))
{
// create a br before list
nsCOMPtr<nsIDOMNode> brNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(listParent, listOffset, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
// adjust selection to be right before it
res = aSelection->Collapse(listParent, listOffset);
NS_ENSURE_SUCCESS(res, res);
}
// else just let selection perculate up. We'll adjust it in AfterEdit()
}
}
else
{
// adjust selection to be right after it
res = aSelection->Collapse(blockParent, offset+1);
NS_ENSURE_SUCCESS(res, res);
}
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(emptyBlock);
*aHandled = true;
}
return res;
}
nsresult
nsHTMLEditRules::CheckForInvisibleBR(nsIDOMNode *aBlock,
BRLocation aWhere,
nsCOMPtr<nsIDOMNode> *outBRNode,
int32_t aOffset)
{
NS_ENSURE_TRUE(aBlock && outBRNode, NS_ERROR_NULL_POINTER);
*outBRNode = nullptr;
nsCOMPtr<nsIDOMNode> testNode;
int32_t testOffset = 0;
bool runTest = false;
if (aWhere == kBlockEnd)
{
nsCOMPtr<nsIDOMNode> rightmostNode =
mHTMLEditor->GetRightmostChild(aBlock, true); // no block crossing
if (rightmostNode)
{
int32_t nodeOffset;
nsCOMPtr<nsIDOMNode> nodeParent = nsEditor::GetNodeLocation(rightmostNode,
&nodeOffset);
runTest = true;
testNode = nodeParent;
// use offset + 1, because we want the last node included in our
// evaluation
testOffset = nodeOffset + 1;
}
}
else if (aOffset)
{
runTest = true;
testNode = aBlock;
// we'll check everything to the left of the input position
testOffset = aOffset;
}
if (runTest)
{
nsWSRunObject wsTester(mHTMLEditor, testNode, testOffset);
if (WSType::br == wsTester.mStartReason) {
*outBRNode = wsTester.mStartReasonNode;
}
}
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////
// GetInnerContent: aList and aTbl allow the caller to specify what kind
// of content to "look inside". If aTbl is true, look inside
// any table content, and insert the inner content into the
// supplied issupportsarray at offset aIndex.
// Similarly with aList and list content.
// aIndex is updated to point past inserted elements.
//
nsresult
nsHTMLEditRules::GetInnerContent(nsIDOMNode *aNode, nsCOMArray<nsIDOMNode> &outArrayOfNodes,
int32_t *aIndex, bool aList, bool aTbl)
{
NS_ENSURE_TRUE(aNode && aIndex, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> node;
nsresult res = mHTMLEditor->GetFirstEditableChild(aNode, address_of(node));
while (NS_SUCCEEDED(res) && node)
{
if ( ( aList && (nsHTMLEditUtils::IsList(node) ||
nsHTMLEditUtils::IsListItem(node) ) )
|| ( aTbl && nsHTMLEditUtils::IsTableElement(node) ) )
{
res = GetInnerContent(node, outArrayOfNodes, aIndex, aList, aTbl);
NS_ENSURE_SUCCESS(res, res);
}
else
{
outArrayOfNodes.InsertObjectAt(node, *aIndex);
(*aIndex)++;
}
nsCOMPtr<nsIDOMNode> tmp;
res = node->GetNextSibling(getter_AddRefs(tmp));
node = tmp;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// ExpandSelectionForDeletion: this promotes our selection to include blocks
// that have all their children selected.
//
nsresult
nsHTMLEditRules::ExpandSelectionForDeletion(nsISelection *aSelection)
{
NS_ENSURE_TRUE(aSelection, NS_ERROR_NULL_POINTER);
// don't need to touch collapsed selections
if (aSelection->Collapsed()) {
return NS_OK;
}
int32_t rangeCount;
nsresult res = aSelection->GetRangeCount(&rangeCount);
NS_ENSURE_SUCCESS(res, res);
// we don't need to mess with cell selections, and we assume multirange selections are those.
if (rangeCount != 1) return NS_OK;
// find current sel start and end
nsCOMPtr<nsIDOMRange> range;
res = aSelection->GetRangeAt(0, getter_AddRefs(range));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(range, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> selStartNode, selEndNode, selCommon;
int32_t selStartOffset, selEndOffset;
res = range->GetStartContainer(getter_AddRefs(selStartNode));
NS_ENSURE_SUCCESS(res, res);
res = range->GetStartOffset(&selStartOffset);
NS_ENSURE_SUCCESS(res, res);
res = range->GetEndContainer(getter_AddRefs(selEndNode));
NS_ENSURE_SUCCESS(res, res);
res = range->GetEndOffset(&selEndOffset);
NS_ENSURE_SUCCESS(res, res);
// find current selection common block parent
res = range->GetCommonAncestorContainer(getter_AddRefs(selCommon));
NS_ENSURE_SUCCESS(res, res);
if (!IsBlockNode(selCommon))
selCommon = nsHTMLEditor::GetBlockNodeParent(selCommon);
// set up for loops and cache our root element
bool stillLooking = true;
nsCOMPtr<nsIDOMNode> visNode, firstBRParent;
int32_t visOffset=0, firstBROffset=0;
WSType wsType;
nsCOMPtr<nsIContent> rootContent = mHTMLEditor->GetActiveEditingHost();
nsCOMPtr<nsIDOMNode> rootElement = do_QueryInterface(rootContent);
NS_ENSURE_TRUE(rootElement, NS_ERROR_FAILURE);
// find previous visible thingy before start of selection
if ((selStartNode!=selCommon) && (selStartNode!=rootElement))
{
while (stillLooking)
{
nsWSRunObject wsObj(mHTMLEditor, selStartNode, selStartOffset);
wsObj.PriorVisibleNode(selStartNode, selStartOffset, address_of(visNode),
&visOffset, &wsType);
if (wsType == WSType::thisBlock) {
// we want to keep looking up. But stop if we are crossing table element
// boundaries, or if we hit the root.
if ( nsHTMLEditUtils::IsTableElement(wsObj.mStartReasonNode) ||
(selCommon == wsObj.mStartReasonNode) ||
(rootElement == wsObj.mStartReasonNode) )
{
stillLooking = false;
}
else
{
selStartNode = nsEditor::GetNodeLocation(wsObj.mStartReasonNode,
&selStartOffset);
}
}
else
{
stillLooking = false;
}
}
}
stillLooking = true;
// find next visible thingy after end of selection
if ((selEndNode!=selCommon) && (selEndNode!=rootElement))
{
while (stillLooking)
{
nsWSRunObject wsObj(mHTMLEditor, selEndNode, selEndOffset);
wsObj.NextVisibleNode(selEndNode, selEndOffset, address_of(visNode),
&visOffset, &wsType);
if (wsType == WSType::br) {
if (mHTMLEditor->IsVisBreak(wsObj.mEndReasonNode))
{
stillLooking = false;
}
else
{
if (!firstBRParent)
{
firstBRParent = selEndNode;
firstBROffset = selEndOffset;
}
selEndNode = nsEditor::GetNodeLocation(wsObj.mEndReasonNode, &selEndOffset);
++selEndOffset;
}
} else if (wsType == WSType::thisBlock) {
// we want to keep looking up. But stop if we are crossing table element
// boundaries, or if we hit the root.
if ( nsHTMLEditUtils::IsTableElement(wsObj.mEndReasonNode) ||
(selCommon == wsObj.mEndReasonNode) ||
(rootElement == wsObj.mEndReasonNode) )
{
stillLooking = false;
}
else
{
selEndNode = nsEditor::GetNodeLocation(wsObj.mEndReasonNode, &selEndOffset);
++selEndOffset;
}
}
else
{
stillLooking = false;
}
}
}
// now set the selection to the new range
aSelection->Collapse(selStartNode, selStartOffset);
// expand selection endpoint only if we didnt pass a br,
// or if we really needed to pass that br (ie, its block is now
// totally selected)
bool doEndExpansion = true;
if (firstBRParent)
{
// find block node containing br
nsCOMPtr<nsIDOMNode> brBlock = firstBRParent;
if (!IsBlockNode(brBlock))
brBlock = nsHTMLEditor::GetBlockNodeParent(brBlock);
bool nodeBefore=false, nodeAfter=false;
// create a range that represents expanded selection
nsCOMPtr<nsINode> node = do_QueryInterface(selStartNode);
NS_ENSURE_STATE(node);
nsRefPtr<nsRange> range = new nsRange(node);
res = range->SetStart(selStartNode, selStartOffset);
NS_ENSURE_SUCCESS(res, res);
res = range->SetEnd(selEndNode, selEndOffset);
NS_ENSURE_SUCCESS(res, res);
// check if block is entirely inside range
nsCOMPtr<nsIContent> brContentBlock = do_QueryInterface(brBlock);
res = nsRange::CompareNodeToRange(brContentBlock, range, &nodeBefore, &nodeAfter);
// if block isn't contained, forgo grabbing the br in the expanded selection
if (nodeBefore || nodeAfter)
doEndExpansion = false;
}
if (doEndExpansion)
{
res = aSelection->Extend(selEndNode, selEndOffset);
}
else
{
// only expand to just before br
res = aSelection->Extend(firstBRParent, firstBROffset);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// NormalizeSelection: tweak non-collapsed selections to be more "natural".
// Idea here is to adjust selection endpoint so that they do not cross
// breaks or block boundaries unless something editable beyond that boundary
// is also selected. This adjustment makes it much easier for the various
// block operations to determine what nodes to act on.
//
nsresult
nsHTMLEditRules::NormalizeSelection(nsISelection *inSelection)
{
NS_ENSURE_TRUE(inSelection, NS_ERROR_NULL_POINTER);
// don't need to touch collapsed selections
if (inSelection->Collapsed()) {
return NS_OK;
}
int32_t rangeCount;
nsresult res = inSelection->GetRangeCount(&rangeCount);
NS_ENSURE_SUCCESS(res, res);
// we don't need to mess with cell selections, and we assume multirange selections are those.
if (rangeCount != 1) return NS_OK;
nsCOMPtr<nsIDOMRange> range;
res = inSelection->GetRangeAt(0, getter_AddRefs(range));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(range, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> startNode, endNode;
int32_t startOffset, endOffset;
nsCOMPtr<nsIDOMNode> newStartNode, newEndNode;
int32_t newStartOffset, newEndOffset;
res = range->GetStartContainer(getter_AddRefs(startNode));
NS_ENSURE_SUCCESS(res, res);
res = range->GetStartOffset(&startOffset);
NS_ENSURE_SUCCESS(res, res);
res = range->GetEndContainer(getter_AddRefs(endNode));
NS_ENSURE_SUCCESS(res, res);
res = range->GetEndOffset(&endOffset);
NS_ENSURE_SUCCESS(res, res);
// adjusted values default to original values
newStartNode = startNode;
newStartOffset = startOffset;
newEndNode = endNode;
newEndOffset = endOffset;
// some locals we need for whitespace code
nsCOMPtr<nsIDOMNode> someNode;
int32_t offset;
WSType wsType;
// let the whitespace code do the heavy lifting
nsWSRunObject wsEndObj(mHTMLEditor, endNode, endOffset);
// is there any intervening visible whitespace? if so we can't push selection past that,
// it would visibly change maening of users selection
wsEndObj.PriorVisibleNode(endNode, endOffset, address_of(someNode),
&offset, &wsType);
if (wsType != WSType::text && wsType != WSType::normalWS) {
// eThisBlock and eOtherBlock conveniently distinquish cases
// of going "down" into a block and "up" out of a block.
if (wsEndObj.mStartReason == WSType::otherBlock) {
// endpoint is just after the close of a block.
nsCOMPtr<nsIDOMNode> child = mHTMLEditor->GetRightmostChild(wsEndObj.mStartReasonNode, true);
if (child)
{
newEndNode = nsEditor::GetNodeLocation(child, &newEndOffset);
++newEndOffset; // offset *after* child
}
// else block is empty - we can leave selection alone here, i think.
} else if (wsEndObj.mStartReason == WSType::thisBlock) {
// endpoint is just after start of this block
nsCOMPtr<nsIDOMNode> child;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetPriorHTMLNode(endNode, endOffset, address_of(child));
if (child)
{
newEndNode = nsEditor::GetNodeLocation(child, &newEndOffset);
++newEndOffset; // offset *after* child
}
// else block is empty - we can leave selection alone here, i think.
} else if (wsEndObj.mStartReason == WSType::br) {
// endpoint is just after break. lets adjust it to before it.
newEndNode = nsEditor::GetNodeLocation(wsEndObj.mStartReasonNode,
&newEndOffset);
}
}
// similar dealio for start of range
nsWSRunObject wsStartObj(mHTMLEditor, startNode, startOffset);
// is there any intervening visible whitespace? if so we can't push selection past that,
// it would visibly change maening of users selection
wsStartObj.NextVisibleNode(startNode, startOffset, address_of(someNode),
&offset, &wsType);
if (wsType != WSType::text && wsType != WSType::normalWS) {
// eThisBlock and eOtherBlock conveniently distinquish cases
// of going "down" into a block and "up" out of a block.
if (wsStartObj.mEndReason == WSType::otherBlock) {
// startpoint is just before the start of a block.
nsCOMPtr<nsIDOMNode> child = mHTMLEditor->GetLeftmostChild(wsStartObj.mEndReasonNode, true);
if (child)
{
newStartNode = nsEditor::GetNodeLocation(child, &newStartOffset);
}
// else block is empty - we can leave selection alone here, i think.
} else if (wsStartObj.mEndReason == WSType::thisBlock) {
// startpoint is just before end of this block
nsCOMPtr<nsIDOMNode> child;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLNode(startNode, startOffset, address_of(child));
if (child)
{
newStartNode = nsEditor::GetNodeLocation(child, &newStartOffset);
}
// else block is empty - we can leave selection alone here, i think.
} else if (wsStartObj.mEndReason == WSType::br) {
// startpoint is just before a break. lets adjust it to after it.
newStartNode = nsEditor::GetNodeLocation(wsStartObj.mEndReasonNode,
&newStartOffset);
++newStartOffset; // offset *after* break
}
}
// there is a demented possiblity we have to check for. We might have a very strange selection
// that is not collapsed and yet does not contain any editable content, and satisfies some of the
// above conditions that cause tweaking. In this case we don't want to tweak the selection into
// a block it was never in, etc. There are a variety of strategies one might use to try to
// detect these cases, but I think the most straightforward is to see if the adjusted locations
// "cross" the old values: ie, new end before old start, or new start after old end. If so
// then just leave things alone.
int16_t comp;
comp = nsContentUtils::ComparePoints(startNode, startOffset,
newEndNode, newEndOffset);
if (comp == 1) return NS_OK; // new end before old start
comp = nsContentUtils::ComparePoints(newStartNode, newStartOffset,
endNode, endOffset);
if (comp == 1) return NS_OK; // new start after old end
// otherwise set selection to new values.
inSelection->Collapse(newStartNode, newStartOffset);
inSelection->Extend(newEndNode, newEndOffset);
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////
// GetPromotedPoint: figure out where a start or end point for a block
// operation really is
void
nsHTMLEditRules::GetPromotedPoint(RulesEndpoint aWhere, nsIDOMNode* aNode,
int32_t aOffset,
EditAction actionID,
nsCOMPtr<nsIDOMNode>* outNode,
int32_t* outOffset)
{
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
MOZ_ASSERT(node && outNode && outOffset);
// default values
*outNode = node->AsDOMNode();
*outOffset = aOffset;
// we do one thing for text actions, something else entirely for other
// actions
if (actionID == EditAction::insertText ||
actionID == EditAction::insertIMEText ||
actionID == EditAction::insertBreak ||
actionID == EditAction::deleteText) {
bool isSpace, isNBSP;
nsCOMPtr<nsIContent> content = do_QueryInterface(node), temp;
// for text actions, we want to look backwards (or forwards, as
// appropriate) for additional whitespace or nbsp's. We may have to act on
// these later even though they are outside of the initial selection. Even
// if they are in another node!
while (content) {
int32_t offset;
if (aWhere == kStart) {
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
mHTMLEditor->IsPrevCharInNodeWhitespace(content, *outOffset,
&isSpace, &isNBSP,
getter_AddRefs(temp), &offset);
} else {
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
mHTMLEditor->IsNextCharInNodeWhitespace(content, *outOffset,
&isSpace, &isNBSP,
getter_AddRefs(temp), &offset);
}
if (isSpace || isNBSP) {
content = temp;
*outOffset = offset;
} else {
break;
}
}
*outNode = content->AsDOMNode();
return;
}
int32_t offset = aOffset;
// else not a text section. In this case we want to see if we should grab
// any adjacent inline nodes and/or parents and other ancestors
if (aWhere == kStart) {
// some special casing for text nodes
if (node->IsNodeOfType(nsINode::eTEXT)) {
if (!node->GetParentNode()) {
// Okay, can't promote any further
return;
}
offset = node->GetParentNode()->IndexOf(node);
node = node->GetParentNode();
}
// look back through any further inline nodes that aren't across a <br>
// from us, and that are enclosed in the same block.
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
nsCOMPtr<nsINode> priorNode =
mHTMLEditor->GetPriorHTMLNode(node, offset, true);
while (priorNode && priorNode->GetParentNode() &&
mHTMLEditor && !mHTMLEditor->IsVisBreak(priorNode->AsDOMNode()) &&
!IsBlockNode(priorNode->AsDOMNode())) {
offset = priorNode->GetParentNode()->IndexOf(priorNode);
node = priorNode->GetParentNode();
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
priorNode = mHTMLEditor->GetPriorHTMLNode(node, offset, true);
}
// finding the real start for this point. look up the tree for as long as
// we are the first node in the container, and as long as we haven't hit
// the body node.
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
nsCOMPtr<nsIContent> nearNode =
mHTMLEditor->GetPriorHTMLNode(node, offset, true);
while (!nearNode && node->Tag() != nsGkAtoms::body &&
node->GetParentNode()) {
// some cutoffs are here: we don't need to also include them in the
// aWhere == kEnd case. as long as they are in one or the other it will
// work. special case for outdent: don't keep looking up if we have
// found a blockquote element to act on
if (actionID == EditAction::outdent &&
node->Tag() == nsGkAtoms::blockquote) {
break;
}
int32_t parentOffset = node->GetParentNode()->IndexOf(node);
nsCOMPtr<nsINode> parent = node->GetParentNode();
// Don't walk past the editable section. Note that we need to check
// before walking up to a parent because we need to return the parent
// object, so the parent itself might not be in the editable area, but
// it's OK if we're not performing a block-level action.
bool blockLevelAction = actionID == EditAction::indent ||
actionID == EditAction::outdent ||
actionID == EditAction::align ||
actionID == EditAction::makeBasicBlock;
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
if (!mHTMLEditor->IsDescendantOfEditorRoot(parent) &&
(blockLevelAction || !mHTMLEditor ||
!mHTMLEditor->IsDescendantOfEditorRoot(node))) {
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
break;
}
node = parent;
offset = parentOffset;
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
nearNode = mHTMLEditor->GetPriorHTMLNode(node, offset, true);
}
*outNode = node->AsDOMNode();
*outOffset = offset;
return;
}
// aWhere == kEnd
// some special casing for text nodes
if (node->IsNodeOfType(nsINode::eTEXT)) {
if (!node->GetParentNode()) {
// Okay, can't promote any further
return;
}
// want to be after the text node
offset = 1 + node->GetParentNode()->IndexOf(node);
node = node->GetParentNode();
}
// look ahead through any further inline nodes that aren't across a <br> from
// us, and that are enclosed in the same block.
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
nsCOMPtr<nsIContent> nextNode =
mHTMLEditor->GetNextHTMLNode(node, offset, true);
while (nextNode && !IsBlockNode(nextNode->AsDOMNode()) &&
nextNode->GetParentNode()) {
offset = 1 + nextNode->GetParentNode()->IndexOf(nextNode);
node = nextNode->GetParentNode();
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
if (mHTMLEditor->IsVisBreak(nextNode->AsDOMNode())) {
break;
}
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
nextNode = mHTMLEditor->GetNextHTMLNode(node, offset, true);
}
// finding the real end for this point. look up the tree for as long as we
// are the last node in the container, and as long as we haven't hit the body
// node.
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
nsCOMPtr<nsIContent> nearNode =
mHTMLEditor->GetNextHTMLNode(node, offset, true);
while (!nearNode && node->Tag() != nsGkAtoms::body &&
node->GetParentNode()) {
int32_t parentOffset = node->GetParentNode()->IndexOf(node);
nsCOMPtr<nsINode> parent = node->GetParentNode();
// Don't walk past the editable section. Note that we need to check before
// walking up to a parent because we need to return the parent object, so
// the parent itself might not be in the editable area, but it's OK.
if ((!mHTMLEditor || !mHTMLEditor->IsDescendantOfEditorRoot(node)) &&
(!mHTMLEditor || !mHTMLEditor->IsDescendantOfEditorRoot(parent))) {
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
break;
}
node = parent;
// we want to be AFTER nearNode
offset = parentOffset + 1;
NS_ENSURE_TRUE(mHTMLEditor, /* void */);
nearNode = mHTMLEditor->GetNextHTMLNode(node, offset, true);
}
*outNode = node->AsDOMNode();
*outOffset = offset;
}
///////////////////////////////////////////////////////////////////////////
// GetPromotedRanges: run all the selection range endpoint through
// GetPromotedPoint()
//
nsresult
nsHTMLEditRules::GetPromotedRanges(nsISelection *inSelection,
nsCOMArray<nsIDOMRange> &outArrayOfRanges,
EditAction inOperationType)
{
NS_ENSURE_TRUE(inSelection, NS_ERROR_NULL_POINTER);
int32_t rangeCount;
nsresult res = inSelection->GetRangeCount(&rangeCount);
NS_ENSURE_SUCCESS(res, res);
int32_t i;
nsCOMPtr<nsIDOMRange> selectionRange;
nsCOMPtr<nsIDOMRange> opRange;
for (i = 0; i < rangeCount; i++)
{
res = inSelection->GetRangeAt(i, getter_AddRefs(selectionRange));
NS_ENSURE_SUCCESS(res, res);
// clone range so we don't muck with actual selection ranges
res = selectionRange->CloneRange(getter_AddRefs(opRange));
NS_ENSURE_SUCCESS(res, res);
// make a new adjusted range to represent the appropriate block content.
// The basic idea is to push out the range endpoints
// to truly enclose the blocks that we will affect.
// This call alters opRange.
res = PromoteRange(opRange, inOperationType);
NS_ENSURE_SUCCESS(res, res);
// stuff new opRange into array
outArrayOfRanges.AppendObject(opRange);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// PromoteRange: expand a range to include any parents for which all
// editable children are already in range.
//
nsresult
nsHTMLEditRules::PromoteRange(nsIDOMRange *inRange,
EditAction inOperationType)
{
NS_ENSURE_TRUE(inRange, NS_ERROR_NULL_POINTER);
nsresult res;
nsCOMPtr<nsIDOMNode> startNode, endNode;
int32_t startOffset, endOffset;
res = inRange->GetStartContainer(getter_AddRefs(startNode));
NS_ENSURE_SUCCESS(res, res);
res = inRange->GetStartOffset(&startOffset);
NS_ENSURE_SUCCESS(res, res);
res = inRange->GetEndContainer(getter_AddRefs(endNode));
NS_ENSURE_SUCCESS(res, res);
res = inRange->GetEndOffset(&endOffset);
NS_ENSURE_SUCCESS(res, res);
// MOOSE major hack:
// GetPromotedPoint doesn't really do the right thing for collapsed ranges
// inside block elements that contain nothing but a solo <br>. It's easier
// to put a workaround here than to revamp GetPromotedPoint. :-(
if ( (startNode == endNode) && (startOffset == endOffset))
{
nsCOMPtr<nsIDOMNode> block;
if (IsBlockNode(startNode)) {
block = startNode;
} else {
NS_ENSURE_STATE(mHTMLEditor);
block = mHTMLEditor->GetBlockNodeParent(startNode);
}
if (block)
{
bool bIsEmptyNode = false;
// check for the editing host
NS_ENSURE_STATE(mHTMLEditor);
nsIContent *rootContent = mHTMLEditor->GetActiveEditingHost();
nsCOMPtr<nsINode> rootNode = do_QueryInterface(rootContent);
nsCOMPtr<nsINode> blockNode = do_QueryInterface(block);
NS_ENSURE_TRUE(rootNode && blockNode, NS_ERROR_UNEXPECTED);
// Make sure we don't go higher than our root element in the content tree
if (!nsContentUtils::ContentIsDescendantOf(rootNode, blockNode))
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsEmptyNode(block, &bIsEmptyNode, true, false);
}
if (bIsEmptyNode)
{
uint32_t numChildren;
nsEditor::GetLengthOfDOMNode(block, numChildren);
startNode = block;
endNode = block;
startOffset = 0;
endOffset = numChildren;
}
}
}
// make a new adjusted range to represent the appropriate block content.
// this is tricky. the basic idea is to push out the range endpoints
// to truly enclose the blocks that we will affect
nsCOMPtr<nsIDOMNode> opStartNode;
nsCOMPtr<nsIDOMNode> opEndNode;
int32_t opStartOffset, opEndOffset;
nsCOMPtr<nsIDOMRange> opRange;
GetPromotedPoint(kStart, startNode, startOffset, inOperationType,
address_of(opStartNode), &opStartOffset);
GetPromotedPoint(kEnd, endNode, endOffset, inOperationType,
address_of(opEndNode), &opEndOffset);
// Make sure that the new range ends up to be in the editable section.
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsDescendantOfEditorRoot(nsEditor::GetNodeAtRangeOffsetPoint(opStartNode, opStartOffset)) ||
!mHTMLEditor || // Check again, since it may have gone away
!mHTMLEditor->IsDescendantOfEditorRoot(nsEditor::GetNodeAtRangeOffsetPoint(opEndNode, opEndOffset - 1))) {
NS_ENSURE_STATE(mHTMLEditor);
return NS_OK;
}
res = inRange->SetStart(opStartNode, opStartOffset);
NS_ENSURE_SUCCESS(res, res);
res = inRange->SetEnd(opEndNode, opEndOffset);
return res;
}
class nsUniqueFunctor : public nsBoolDomIterFunctor
{
public:
nsUniqueFunctor(nsCOMArray<nsIDOMNode> &aArray) : mArray(aArray)
{
}
virtual bool operator()(nsIDOMNode* aNode) // used to build list of all nodes iterator covers
{
return mArray.IndexOf(aNode) < 0;
}
private:
nsCOMArray<nsIDOMNode> &mArray;
};
///////////////////////////////////////////////////////////////////////////
// GetNodesForOperation: run through the ranges in the array and construct
// a new array of nodes to be acted on.
//
nsresult
nsHTMLEditRules::GetNodesForOperation(nsCOMArray<nsIDOMRange>& inArrayOfRanges,
nsCOMArray<nsIDOMNode>& outArrayOfNodes,
EditAction inOperationType,
bool aDontTouchContent)
{
int32_t rangeCount = inArrayOfRanges.Count();
int32_t i;
nsCOMPtr<nsIDOMRange> opRange;
nsresult res = NS_OK;
// bust up any inlines that cross our range endpoints,
// but only if we are allowed to touch content.
if (!aDontTouchContent)
{
nsTArray<nsRefPtr<nsRangeStore> > rangeItemArray;
if (!rangeItemArray.AppendElements(rangeCount)) {
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ASSERTION(static_cast<uint32_t>(rangeCount) == rangeItemArray.Length(),
"How did that happen?");
// first register ranges for special editor gravity
for (i = 0; i < rangeCount; i++)
{
opRange = inArrayOfRanges[0];
rangeItemArray[i] = new nsRangeStore();
rangeItemArray[i]->StoreRange(opRange);
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mRangeUpdater.RegisterRangeItem(rangeItemArray[i]);
inArrayOfRanges.RemoveObjectAt(0);
}
// now bust up inlines. Safe to start at rangeCount-1, since we
// asserted we have enough items above.
for (i = rangeCount-1; i >= 0 && NS_SUCCEEDED(res); i--)
{
res = BustUpInlinesAtRangeEndpoints(*rangeItemArray[i]);
}
// then unregister the ranges
for (i = 0; i < rangeCount; i++)
{
nsRangeStore* item = rangeItemArray[i];
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mRangeUpdater.DropRangeItem(item);
nsRefPtr<nsRange> range;
nsresult res2 = item->GetRange(getter_AddRefs(range));
opRange = range;
if (NS_FAILED(res2) && NS_SUCCEEDED(res)) {
// Remember the failure, but keep going so we make sure to unregister
// all our range items.
res = res2;
}
inArrayOfRanges.AppendObject(opRange);
}
NS_ENSURE_SUCCESS(res, res);
}
// gather up a list of all the nodes
for (i = 0; i < rangeCount; i++)
{
opRange = inArrayOfRanges[i];
nsDOMSubtreeIterator iter;
res = iter.Init(opRange);
NS_ENSURE_SUCCESS(res, res);
if (outArrayOfNodes.Count() == 0) {
nsTrivialFunctor functor;
res = iter.AppendList(functor, outArrayOfNodes);
NS_ENSURE_SUCCESS(res, res);
}
else {
// We don't want duplicates in outArrayOfNodes, so we use an
// iterator/functor that only return nodes that are not already in
// outArrayOfNodes.
nsCOMArray<nsIDOMNode> nodes;
nsUniqueFunctor functor(outArrayOfNodes);
res = iter.AppendList(functor, nodes);
NS_ENSURE_SUCCESS(res, res);
if (!outArrayOfNodes.AppendObjects(nodes))
return NS_ERROR_OUT_OF_MEMORY;
}
}
// certain operations should not act on li's and td's, but rather inside
// them. alter the list as needed
if (inOperationType == EditAction::makeBasicBlock) {
int32_t listCount = outArrayOfNodes.Count();
for (i=listCount-1; i>=0; i--)
{
nsCOMPtr<nsIDOMNode> node = outArrayOfNodes[i];
if (nsHTMLEditUtils::IsListItem(node))
{
int32_t j=i;
outArrayOfNodes.RemoveObjectAt(i);
res = GetInnerContent(node, outArrayOfNodes, &j);
NS_ENSURE_SUCCESS(res, res);
}
}
}
// indent/outdent already do something special for list items, but
// we still need to make sure we don't act on table elements
else if (inOperationType == EditAction::outdent ||
inOperationType == EditAction::indent ||
inOperationType == EditAction::setAbsolutePosition) {
int32_t listCount = outArrayOfNodes.Count();
for (i=listCount-1; i>=0; i--)
{
nsCOMPtr<nsIDOMNode> node = outArrayOfNodes[i];
if (nsHTMLEditUtils::IsTableElementButNotTable(node))
{
int32_t j=i;
outArrayOfNodes.RemoveObjectAt(i);
res = GetInnerContent(node, outArrayOfNodes, &j);
NS_ENSURE_SUCCESS(res, res);
}
}
}
// outdent should look inside of divs.
if (inOperationType == EditAction::outdent &&
(!mHTMLEditor || !mHTMLEditor->IsCSSEnabled())) {
NS_ENSURE_STATE(mHTMLEditor);
int32_t listCount = outArrayOfNodes.Count();
for (i=listCount-1; i>=0; i--)
{
nsCOMPtr<nsIDOMNode> node = outArrayOfNodes[i];
if (nsHTMLEditUtils::IsDiv(node))
{
int32_t j=i;
outArrayOfNodes.RemoveObjectAt(i);
res = GetInnerContent(node, outArrayOfNodes, &j, false, false);
NS_ENSURE_SUCCESS(res, res);
}
}
}
// post process the list to break up inline containers that contain br's.
// but only for operations that might care, like making lists or para's...
if (inOperationType == EditAction::makeBasicBlock ||
inOperationType == EditAction::makeList ||
inOperationType == EditAction::align ||
inOperationType == EditAction::setAbsolutePosition ||
inOperationType == EditAction::indent ||
inOperationType == EditAction::outdent) {
int32_t listCount = outArrayOfNodes.Count();
for (i=listCount-1; i>=0; i--)
{
nsCOMPtr<nsIDOMNode> node = outArrayOfNodes[i];
if (!aDontTouchContent && IsInlineNode(node) &&
(!mHTMLEditor || mHTMLEditor->IsContainer(node)) &&
(!mHTMLEditor || !mHTMLEditor->IsTextNode(node)))
{
NS_ENSURE_STATE(mHTMLEditor);
nsCOMArray<nsIDOMNode> arrayOfInlines;
res = BustUpInlinesAtBRs(node, arrayOfInlines);
NS_ENSURE_SUCCESS(res, res);
// put these nodes in outArrayOfNodes, replacing the current node
outArrayOfNodes.RemoveObjectAt(i);
outArrayOfNodes.InsertObjectsAt(arrayOfInlines, i);
}
}
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// GetChildNodesForOperation:
//
nsresult
nsHTMLEditRules::GetChildNodesForOperation(nsIDOMNode *inNode,
nsCOMArray<nsIDOMNode>& outArrayOfNodes)
{
nsCOMPtr<nsINode> node = do_QueryInterface(inNode);
NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER);
for (nsIContent* child = node->GetFirstChild();
child;
child = child->GetNextSibling()) {
nsIDOMNode* childNode = child->AsDOMNode();
if (!outArrayOfNodes.AppendObject(childNode)) {
return NS_ERROR_FAILURE;
}
}
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////
// GetListActionNodes:
//
nsresult
nsHTMLEditRules::GetListActionNodes(nsCOMArray<nsIDOMNode> &outArrayOfNodes,
bool aEntireList,
bool aDontTouchContent)
{
nsresult res = NS_OK;
nsCOMPtr<nsISelection>selection;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
Selection* sel = static_cast<Selection*>(selection.get());
NS_ENSURE_TRUE(sel, NS_ERROR_FAILURE);
// added this in so that ui code can ask to change an entire list, even if selection
// is only in part of it. used by list item dialog.
if (aEntireList)
{
uint32_t rangeCount = sel->GetRangeCount();
for (uint32_t rangeIdx = 0; rangeIdx < rangeCount; ++rangeIdx) {
nsRefPtr<nsRange> range = sel->GetRangeAt(rangeIdx);
nsCOMPtr<nsIDOMNode> commonParent, parent, tmp;
range->GetCommonAncestorContainer(getter_AddRefs(commonParent));
if (commonParent)
{
parent = commonParent;
while (parent)
{
if (nsHTMLEditUtils::IsList(parent))
{
outArrayOfNodes.AppendObject(parent);
break;
}
parent->GetParentNode(getter_AddRefs(tmp));
parent = tmp;
}
}
}
// if we didn't find any nodes this way, then try the normal way. perhaps the
// selection spans multiple lists but with no common list parent.
if (outArrayOfNodes.Count()) return NS_OK;
}
{
// We don't like other people messing with our selection!
NS_ENSURE_STATE(mHTMLEditor);
nsAutoTxnsConserveSelection dontSpazMySelection(mHTMLEditor);
// contruct a list of nodes to act on.
res = GetNodesFromSelection(selection, EditAction::makeList,
outArrayOfNodes, aDontTouchContent);
NS_ENSURE_SUCCESS(res, res);
}
// pre process our list of nodes...
int32_t listCount = outArrayOfNodes.Count();
int32_t i;
for (i=listCount-1; i>=0; i--)
{
nsCOMPtr<nsIDOMNode> testNode = outArrayOfNodes[i];
// Remove all non-editable nodes. Leave them be.
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsEditable(testNode))
{
outArrayOfNodes.RemoveObjectAt(i);
}
// scan for table elements and divs. If we find table elements other than table,
// replace it with a list of any editable non-table content.
if (nsHTMLEditUtils::IsTableElementButNotTable(testNode))
{
int32_t j=i;
outArrayOfNodes.RemoveObjectAt(i);
res = GetInnerContent(testNode, outArrayOfNodes, &j, false);
NS_ENSURE_SUCCESS(res, res);
}
}
// if there is only one node in the array, and it is a list, div, or blockquote,
// then look inside of it until we find inner list or content.
res = LookInsideDivBQandList(outArrayOfNodes);
return res;
}
///////////////////////////////////////////////////////////////////////////
// LookInsideDivBQandList:
//
nsresult
nsHTMLEditRules::LookInsideDivBQandList(nsCOMArray<nsIDOMNode>& aNodeArray)
{
// if there is only one node in the array, and it is a list, div, or blockquote,
// then look inside of it until we find inner list or content.
int32_t listCount = aNodeArray.Count();
if (listCount != 1) {
return NS_OK;
}
nsCOMPtr<nsINode> curNode = do_QueryInterface(aNodeArray[0]);
NS_ENSURE_STATE(curNode);
while (curNode->IsElement() &&
(curNode->AsElement()->IsHTML(nsGkAtoms::div) ||
nsHTMLEditUtils::IsList(curNode) ||
curNode->AsElement()->IsHTML(nsGkAtoms::blockquote))) {
// dive as long as there is only one child, and it is a list, div, blockquote
NS_ENSURE_STATE(mHTMLEditor);
uint32_t numChildren = mHTMLEditor->CountEditableChildren(curNode);
if (numChildren != 1) {
break;
}
// keep diving
// XXX One would expect to dive into the one editable node.
nsIContent* tmp = curNode->GetFirstChild();
if (!tmp->IsElement()) {
break;
}
dom::Element* element = tmp->AsElement();
if (!element->IsHTML(nsGkAtoms::div) &&
!nsHTMLEditUtils::IsList(element) &&
!element->IsHTML(nsGkAtoms::blockquote)) {
break;
}
// check editablility XXX floppy moose
curNode = tmp;
}
// we've found innermost list/blockquote/div:
// replace the one node in the array with these nodes
aNodeArray.RemoveObjectAt(0);
if (curNode->IsElement() &&
(curNode->AsElement()->IsHTML(nsGkAtoms::div) ||
curNode->AsElement()->IsHTML(nsGkAtoms::blockquote))) {
int32_t j = 0;
return GetInnerContent(curNode->AsDOMNode(), aNodeArray, &j, false, false);
}
aNodeArray.AppendObject(curNode->AsDOMNode());
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////
// GetDefinitionListItemTypes:
//
void
nsHTMLEditRules::GetDefinitionListItemTypes(dom::Element* aElement, bool* aDT, bool* aDD)
{
MOZ_ASSERT(aElement);
MOZ_ASSERT(aElement->IsHTML(nsGkAtoms::dl));
MOZ_ASSERT(aDT);
MOZ_ASSERT(aDD);
*aDT = *aDD = false;
for (nsIContent* child = aElement->GetFirstChild();
child;
child = child->GetNextSibling()) {
if (child->IsHTML(nsGkAtoms::dt)) {
*aDT = true;
} else if (child->IsHTML(nsGkAtoms::dd)) {
*aDD = true;
}
}
}
///////////////////////////////////////////////////////////////////////////
// GetParagraphFormatNodes:
//
nsresult
nsHTMLEditRules::GetParagraphFormatNodes(nsCOMArray<nsIDOMNode>& outArrayOfNodes,
bool aDontTouchContent)
{
nsCOMPtr<nsISelection>selection;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
// contruct a list of nodes to act on.
res = GetNodesFromSelection(selection, EditAction::makeBasicBlock,
outArrayOfNodes, aDontTouchContent);
NS_ENSURE_SUCCESS(res, res);
// pre process our list of nodes...
int32_t listCount = outArrayOfNodes.Count();
int32_t i;
for (i=listCount-1; i>=0; i--)
{
nsCOMPtr<nsIDOMNode> testNode = outArrayOfNodes[i];
// Remove all non-editable nodes. Leave them be.
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsEditable(testNode))
{
outArrayOfNodes.RemoveObjectAt(i);
}
// scan for table elements. If we find table elements other than table,
// replace it with a list of any editable non-table content. Ditto for list elements.
if (nsHTMLEditUtils::IsTableElement(testNode) ||
nsHTMLEditUtils::IsList(testNode) ||
nsHTMLEditUtils::IsListItem(testNode) )
{
int32_t j=i;
outArrayOfNodes.RemoveObjectAt(i);
res = GetInnerContent(testNode, outArrayOfNodes, &j);
NS_ENSURE_SUCCESS(res, res);
}
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// BustUpInlinesAtRangeEndpoints:
//
nsresult
nsHTMLEditRules::BustUpInlinesAtRangeEndpoints(nsRangeStore &item)
{
nsresult res = NS_OK;
bool isCollapsed = ((item.startNode == item.endNode) && (item.startOffset == item.endOffset));
nsCOMPtr<nsIDOMNode> endInline = GetHighestInlineParent(item.endNode);
// if we have inline parents above range endpoints, split them
if (endInline && !isCollapsed)
{
nsCOMPtr<nsIDOMNode> resultEndNode;
int32_t resultEndOffset;
endInline->GetParentNode(getter_AddRefs(resultEndNode));
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep(endInline, item.endNode, item.endOffset,
&resultEndOffset, true);
NS_ENSURE_SUCCESS(res, res);
// reset range
item.endNode = resultEndNode; item.endOffset = resultEndOffset;
}
nsCOMPtr<nsIDOMNode> startInline = GetHighestInlineParent(item.startNode);
if (startInline)
{
nsCOMPtr<nsIDOMNode> resultStartNode;
int32_t resultStartOffset;
startInline->GetParentNode(getter_AddRefs(resultStartNode));
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep(startInline, item.startNode, item.startOffset,
&resultStartOffset, true);
NS_ENSURE_SUCCESS(res, res);
// reset range
item.startNode = resultStartNode; item.startOffset = resultStartOffset;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// BustUpInlinesAtBRs:
//
nsresult
nsHTMLEditRules::BustUpInlinesAtBRs(nsIDOMNode *inNode,
nsCOMArray<nsIDOMNode>& outArrayOfNodes)
{
NS_ENSURE_TRUE(inNode, NS_ERROR_NULL_POINTER);
// first step is to build up a list of all the break nodes inside
// the inline container.
nsCOMArray<nsIDOMNode> arrayOfBreaks;
nsBRNodeFunctor functor;
nsDOMIterator iter;
nsresult res = iter.Init(inNode);
NS_ENSURE_SUCCESS(res, res);
res = iter.AppendList(functor, arrayOfBreaks);
NS_ENSURE_SUCCESS(res, res);
// if there aren't any breaks, just put inNode itself in the array
int32_t listCount = arrayOfBreaks.Count();
if (!listCount)
{
if (!outArrayOfNodes.AppendObject(inNode))
return NS_ERROR_FAILURE;
}
else
{
// else we need to bust up inNode along all the breaks
nsCOMPtr<nsIDOMNode> breakNode;
nsCOMPtr<nsIDOMNode> inlineParentNode;
nsCOMPtr<nsIDOMNode> leftNode;
nsCOMPtr<nsIDOMNode> rightNode;
nsCOMPtr<nsIDOMNode> splitDeepNode = inNode;
nsCOMPtr<nsIDOMNode> splitParentNode;
int32_t splitOffset, resultOffset, i;
inNode->GetParentNode(getter_AddRefs(inlineParentNode));
for (i=0; i< listCount; i++)
{
breakNode = arrayOfBreaks[i];
NS_ENSURE_TRUE(breakNode, NS_ERROR_NULL_POINTER);
NS_ENSURE_TRUE(splitDeepNode, NS_ERROR_NULL_POINTER);
splitParentNode = nsEditor::GetNodeLocation(breakNode, &splitOffset);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep(splitDeepNode, splitParentNode, splitOffset,
&resultOffset, false, address_of(leftNode), address_of(rightNode));
NS_ENSURE_SUCCESS(res, res);
// put left node in node list
if (leftNode)
{
// might not be a left node. a break might have been at the very
// beginning of inline container, in which case splitnodedeep
// would not actually split anything
if (!outArrayOfNodes.AppendObject(leftNode))
return NS_ERROR_FAILURE;
}
// move break outside of container and also put in node list
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(breakNode, inlineParentNode, resultOffset);
NS_ENSURE_SUCCESS(res, res);
if (!outArrayOfNodes.AppendObject(breakNode))
return NS_ERROR_FAILURE;
// now rightNode becomes the new node to split
splitDeepNode = rightNode;
}
// now tack on remaining rightNode, if any, to the list
if (rightNode)
{
if (!outArrayOfNodes.AppendObject(rightNode))
return NS_ERROR_FAILURE;
}
}
return res;
}
nsCOMPtr<nsIDOMNode>
nsHTMLEditRules::GetHighestInlineParent(nsIDOMNode* aNode)
{
NS_ENSURE_TRUE(aNode, nullptr);
if (IsBlockNode(aNode)) return nullptr;
nsCOMPtr<nsIDOMNode> inlineNode, node=aNode;
while (node && IsInlineNode(node))
{
inlineNode = node;
inlineNode->GetParentNode(getter_AddRefs(node));
}
return inlineNode;
}
///////////////////////////////////////////////////////////////////////////
// GetNodesFromPoint: given a particular operation, construct a list
// of nodes from a point that will be operated on.
//
nsresult
nsHTMLEditRules::GetNodesFromPoint(DOMPoint point,
EditAction operation,
nsCOMArray<nsIDOMNode> &arrayOfNodes,
bool dontTouchContent)
{
nsresult res;
// get our point
nsCOMPtr<nsIDOMNode> node;
int32_t offset;
point.GetPoint(node, offset);
// use it to make a range
nsCOMPtr<nsINode> nativeNode = do_QueryInterface(node);
NS_ENSURE_STATE(nativeNode);
nsRefPtr<nsRange> range = new nsRange(nativeNode);
res = range->SetStart(node, offset);
NS_ENSURE_SUCCESS(res, res);
/* SetStart() will also set the end for this new range
res = range->SetEnd(node, offset);
NS_ENSURE_SUCCESS(res, res); */
// expand the range to include adjacent inlines
res = PromoteRange(range, operation);
NS_ENSURE_SUCCESS(res, res);
// make array of ranges
nsCOMArray<nsIDOMRange> arrayOfRanges;
// stuff new opRange into array
arrayOfRanges.AppendObject(range);
// use these ranges to contruct a list of nodes to act on.
res = GetNodesForOperation(arrayOfRanges, arrayOfNodes, operation, dontTouchContent);
return res;
}
///////////////////////////////////////////////////////////////////////////
// GetNodesFromSelection: given a particular operation, construct a list
// of nodes from the selection that will be operated on.
//
nsresult
nsHTMLEditRules::GetNodesFromSelection(nsISelection *selection,
EditAction operation,
nsCOMArray<nsIDOMNode>& arrayOfNodes,
bool dontTouchContent)
{
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
nsresult res;
// promote selection ranges
nsCOMArray<nsIDOMRange> arrayOfRanges;
res = GetPromotedRanges(selection, arrayOfRanges, operation);
NS_ENSURE_SUCCESS(res, res);
// use these ranges to contruct a list of nodes to act on.
res = GetNodesForOperation(arrayOfRanges, arrayOfNodes, operation, dontTouchContent);
return res;
}
///////////////////////////////////////////////////////////////////////////
// MakeTransitionList: detect all the transitions in the array, where a
// transition means that adjacent nodes in the array
// don't have the same parent.
//
nsresult
nsHTMLEditRules::MakeTransitionList(nsCOMArray<nsIDOMNode>& inArrayOfNodes,
nsTArray<bool> &inTransitionArray)
{
uint32_t listCount = inArrayOfNodes.Count();
inTransitionArray.EnsureLengthAtLeast(listCount);
uint32_t i;
nsCOMPtr<nsIDOMNode> prevElementParent;
nsCOMPtr<nsIDOMNode> curElementParent;
for (i=0; i<listCount; i++)
{
nsIDOMNode* transNode = inArrayOfNodes[i];
transNode->GetParentNode(getter_AddRefs(curElementParent));
if (curElementParent != prevElementParent)
{
// different parents, or separated by <br>: transition point
inTransitionArray[i] = true;
}
else
{
// same parents: these nodes grew up together
inTransitionArray[i] = false;
}
prevElementParent = curElementParent;
}
return NS_OK;
}
/********************************************************
* main implementation methods
********************************************************/
///////////////////////////////////////////////////////////////////////////
// IsInListItem: if aNode is the descendant of a listitem, return that li.
// But table element boundaries are stoppers on the search.
// Also stops on the active editor host (contenteditable).
// Also test if aNode is an li itself.
//
already_AddRefed<nsIDOMNode>
nsHTMLEditRules::IsInListItem(nsIDOMNode* aNode)
{
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
nsCOMPtr<nsIDOMNode> retval = do_QueryInterface(IsInListItem(node));
return retval.forget();
}
nsINode*
nsHTMLEditRules::IsInListItem(nsINode* aNode)
{
NS_ENSURE_TRUE(aNode, nullptr);
if (nsHTMLEditUtils::IsListItem(aNode)) {
return aNode;
}
nsINode* parent = aNode->GetParentNode();
while (parent && mHTMLEditor && mHTMLEditor->IsDescendantOfEditorRoot(parent) &&
!nsHTMLEditUtils::IsTableElement(parent)) {
if (nsHTMLEditUtils::IsListItem(parent)) {
return parent;
}
parent = parent->GetParentNode();
}
return nullptr;
}
///////////////////////////////////////////////////////////////////////////
// ReturnInHeader: do the right thing for returns pressed in headers
//
nsresult
nsHTMLEditRules::ReturnInHeader(nsISelection *aSelection,
nsIDOMNode *aHeader,
nsIDOMNode *aNode,
int32_t aOffset)
{
NS_ENSURE_TRUE(aSelection && aHeader && aNode, NS_ERROR_NULL_POINTER);
// remeber where the header is
int32_t offset;
nsCOMPtr<nsIDOMNode> headerParent = nsEditor::GetNodeLocation(aHeader, &offset);
// get ws code to adjust any ws
nsCOMPtr<nsIDOMNode> selNode = aNode;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = nsWSRunObject::PrepareToSplitAcrossBlocks(mHTMLEditor,
address_of(selNode),
&aOffset);
NS_ENSURE_SUCCESS(res, res);
// split the header
int32_t newOffset;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep( aHeader, selNode, aOffset, &newOffset);
NS_ENSURE_SUCCESS(res, res);
// if the leftand heading is empty, put a mozbr in it
nsCOMPtr<nsIDOMNode> prevItem;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLSibling(aHeader, address_of(prevItem));
if (prevItem && nsHTMLEditUtils::IsHeader(prevItem))
{
bool bIsEmptyNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsEmptyNode(prevItem, &bIsEmptyNode);
NS_ENSURE_SUCCESS(res, res);
if (bIsEmptyNode) {
res = CreateMozBR(prevItem, 0);
NS_ENSURE_SUCCESS(res, res);
}
}
// if the new (righthand) header node is empty, delete it
bool isEmpty;
res = IsEmptyBlock(aHeader, &isEmpty, true);
NS_ENSURE_SUCCESS(res, res);
if (isEmpty)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(aHeader);
NS_ENSURE_SUCCESS(res, res);
// layout tells the caret to blink in a weird place
// if we don't place a break after the header.
nsCOMPtr<nsIDOMNode> sibling;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLSibling(headerParent, offset+1, address_of(sibling));
NS_ENSURE_SUCCESS(res, res);
if (!sibling || !nsTextEditUtils::IsBreak(sibling))
{
ClearCachedStyles();
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mTypeInState->ClearAllProps();
// create a paragraph
NS_NAMED_LITERAL_STRING(pType, "p");
nsCOMPtr<nsIDOMNode> pNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(pType, headerParent, offset+1, getter_AddRefs(pNode));
NS_ENSURE_SUCCESS(res, res);
// append a <br> to it
nsCOMPtr<nsIDOMNode> brNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(pNode, 0, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
// set selection to before the break
res = aSelection->Collapse(pNode, 0);
}
else
{
headerParent = nsEditor::GetNodeLocation(sibling, &offset);
// put selection after break
res = aSelection->Collapse(headerParent,offset+1);
}
}
else
{
// put selection at front of righthand heading
res = aSelection->Collapse(aHeader,0);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// ReturnInParagraph: do the right thing for returns pressed in paragraphs
//
nsresult
nsHTMLEditRules::ReturnInParagraph(nsISelection* aSelection,
nsIDOMNode* aPara,
nsIDOMNode* aNode,
int32_t aOffset,
bool* aCancel,
bool* aHandled)
{
if (!aSelection || !aPara || !aNode || !aCancel || !aHandled) {
return NS_ERROR_NULL_POINTER;
}
*aCancel = false;
*aHandled = false;
nsresult res;
int32_t offset;
nsCOMPtr<nsIDOMNode> parent = nsEditor::GetNodeLocation(aNode, &offset);
NS_ENSURE_STATE(mHTMLEditor);
bool doesCRCreateNewP = mHTMLEditor->GetReturnInParagraphCreatesNewParagraph();
bool newBRneeded = false;
nsCOMPtr<nsIDOMNode> sibling;
NS_ENSURE_STATE(mHTMLEditor);
if (aNode == aPara && doesCRCreateNewP) {
// we are at the edges of the block, newBRneeded not needed!
sibling = aNode;
} else if (mHTMLEditor->IsTextNode(aNode)) {
nsCOMPtr<nsIDOMText> textNode = do_QueryInterface(aNode);
uint32_t strLength;
res = textNode->GetLength(&strLength);
NS_ENSURE_SUCCESS(res, res);
// at beginning of text node?
if (!aOffset) {
// is there a BR prior to it?
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLSibling(aNode, address_of(sibling));
if (!sibling || !mHTMLEditor || !mHTMLEditor->IsVisBreak(sibling) ||
nsTextEditUtils::HasMozAttr(sibling)) {
NS_ENSURE_STATE(mHTMLEditor);
newBRneeded = true;
}
} else if (aOffset == (int32_t)strLength) {
// we're at the end of text node...
// is there a BR after to it?
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLSibling(aNode, address_of(sibling));
if (!sibling || !mHTMLEditor || !mHTMLEditor->IsVisBreak(sibling) ||
nsTextEditUtils::HasMozAttr(sibling)) {
NS_ENSURE_STATE(mHTMLEditor);
newBRneeded = true;
offset++;
}
} else {
if (doesCRCreateNewP) {
nsCOMPtr<nsIDOMNode> tmp;
res = mEditor->SplitNode(aNode, aOffset, getter_AddRefs(tmp));
NS_ENSURE_SUCCESS(res, res);
aNode = tmp;
}
newBRneeded = true;
offset++;
}
} else {
// not in a text node.
// is there a BR prior to it?
nsCOMPtr<nsIDOMNode> nearNode, selNode = aNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetPriorHTMLNode(aNode, aOffset, address_of(nearNode));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
if (!nearNode || !mHTMLEditor->IsVisBreak(nearNode) ||
nsTextEditUtils::HasMozAttr(nearNode)) {
// is there a BR after it?
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLNode(aNode, aOffset, address_of(nearNode));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
if (!nearNode || !mHTMLEditor->IsVisBreak(nearNode) ||
nsTextEditUtils::HasMozAttr(nearNode)) {
newBRneeded = true;
}
}
if (!newBRneeded) {
sibling = nearNode;
}
}
if (newBRneeded) {
// if CR does not create a new P, default to BR creation
NS_ENSURE_TRUE(doesCRCreateNewP, NS_OK);
nsCOMPtr<nsIDOMNode> brNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(parent, offset, address_of(brNode));
sibling = brNode;
}
nsCOMPtr<nsIDOMNode> selNode = aNode;
*aHandled = true;
return SplitParagraph(aPara, sibling, aSelection, address_of(selNode), &aOffset);
}
///////////////////////////////////////////////////////////////////////////
// SplitParagraph: split a paragraph at selection point, possibly deleting a br
//
nsresult
nsHTMLEditRules::SplitParagraph(nsIDOMNode *aPara,
nsIDOMNode *aBRNode,
nsISelection *aSelection,
nsCOMPtr<nsIDOMNode> *aSelNode,
int32_t *aOffset)
{
NS_ENSURE_TRUE(aPara && aBRNode && aSelNode && *aSelNode && aOffset && aSelection, NS_ERROR_NULL_POINTER);
nsresult res = NS_OK;
// split para
int32_t newOffset;
// get ws code to adjust any ws
nsCOMPtr<nsIDOMNode> leftPara, rightPara;
NS_ENSURE_STATE(mHTMLEditor);
res = nsWSRunObject::PrepareToSplitAcrossBlocks(mHTMLEditor, aSelNode, aOffset);
NS_ENSURE_SUCCESS(res, res);
// split the paragraph
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep(aPara, *aSelNode, *aOffset, &newOffset, false,
address_of(leftPara), address_of(rightPara));
NS_ENSURE_SUCCESS(res, res);
// get rid of the break, if it is visible (otherwise it may be needed to prevent an empty p)
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->IsVisBreak(aBRNode))
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(aBRNode);
NS_ENSURE_SUCCESS(res, res);
}
// remove ID attribute on the paragraph we just created
nsCOMPtr<nsIDOMElement> rightElt = do_QueryInterface(rightPara);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveAttribute(rightElt, NS_LITERAL_STRING("id"));
NS_ENSURE_SUCCESS(res, res);
// check both halves of para to see if we need mozBR
res = InsertMozBRIfNeeded(leftPara);
NS_ENSURE_SUCCESS(res, res);
res = InsertMozBRIfNeeded(rightPara);
NS_ENSURE_SUCCESS(res, res);
// selection to beginning of right hand para;
// look inside any containers that are up front.
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIDOMNode> child = mHTMLEditor->GetLeftmostChild(rightPara, true);
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->IsTextNode(child) || !mHTMLEditor ||
mHTMLEditor->IsContainer(child))
{
NS_ENSURE_STATE(mHTMLEditor);
aSelection->Collapse(child,0);
}
else
{
int32_t offset;
nsCOMPtr<nsIDOMNode> parent = nsEditor::GetNodeLocation(child, &offset);
aSelection->Collapse(parent,offset);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// ReturnInListItem: do the right thing for returns pressed in list items
//
nsresult
nsHTMLEditRules::ReturnInListItem(nsISelection *aSelection,
nsIDOMNode *aListItem,
nsIDOMNode *aNode,
int32_t aOffset)
{
NS_ENSURE_TRUE(aSelection && aListItem && aNode, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsISelection> selection(aSelection);
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> listitem;
// sanity check
NS_PRECONDITION(true == nsHTMLEditUtils::IsListItem(aListItem),
"expected a list item and didn't get one");
// get the listitem parent and the active editing host.
NS_ENSURE_STATE(mHTMLEditor);
nsIContent* rootContent = mHTMLEditor->GetActiveEditingHost();
nsCOMPtr<nsIDOMNode> rootNode = do_QueryInterface(rootContent);
int32_t itemOffset;
nsCOMPtr<nsIDOMNode> list = nsEditor::GetNodeLocation(aListItem, &itemOffset);
// if we are in an empty listitem, then we want to pop up out of the list
// but only if prefs says it's ok and if the parent isn't the active editing host.
bool isEmpty;
res = IsEmptyBlock(aListItem, &isEmpty, true, false);
NS_ENSURE_SUCCESS(res, res);
if (isEmpty && (rootNode != list) && mReturnInEmptyLIKillsList)
{
// get the list offset now -- before we might eventually split the list
int32_t offset;
nsCOMPtr<nsIDOMNode> listparent = nsEditor::GetNodeLocation(list, &offset);
// are we the last list item in the list?
bool bIsLast;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsLastEditableChild(aListItem, &bIsLast);
NS_ENSURE_SUCCESS(res, res);
if (!bIsLast)
{
// we need to split the list!
nsCOMPtr<nsIDOMNode> tempNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNode(list, itemOffset, getter_AddRefs(tempNode));
NS_ENSURE_SUCCESS(res, res);
}
// are we in a sublist?
if (nsHTMLEditUtils::IsList(listparent)) //in a sublist
{
// if so, move this list item out of this list and into the grandparent list
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(aListItem,listparent,offset+1);
NS_ENSURE_SUCCESS(res, res);
res = aSelection->Collapse(aListItem,0);
}
else
{
// otherwise kill this listitem
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(aListItem);
NS_ENSURE_SUCCESS(res, res);
// time to insert a paragraph
NS_NAMED_LITERAL_STRING(pType, "p");
nsCOMPtr<nsIDOMNode> pNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(pType, listparent, offset+1, getter_AddRefs(pNode));
NS_ENSURE_SUCCESS(res, res);
// append a <br> to it
nsCOMPtr<nsIDOMNode> brNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(pNode, 0, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
// set selection to before the break
res = aSelection->Collapse(pNode, 0);
}
return res;
}
// else we want a new list item at the same list level.
// get ws code to adjust any ws
nsCOMPtr<nsIDOMNode> selNode = aNode;
NS_ENSURE_STATE(mHTMLEditor);
res = nsWSRunObject::PrepareToSplitAcrossBlocks(mHTMLEditor, address_of(selNode), &aOffset);
NS_ENSURE_SUCCESS(res, res);
// now split list item
int32_t newOffset;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep( aListItem, selNode, aOffset, &newOffset, false);
NS_ENSURE_SUCCESS(res, res);
// hack: until I can change the damaged doc range code back to being
// extra inclusive, I have to manually detect certain list items that
// may be left empty.
nsCOMPtr<nsIDOMNode> prevItem;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLSibling(aListItem, address_of(prevItem));
if (prevItem && nsHTMLEditUtils::IsListItem(prevItem))
{
bool bIsEmptyNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsEmptyNode(prevItem, &bIsEmptyNode);
NS_ENSURE_SUCCESS(res, res);
if (bIsEmptyNode) {
res = CreateMozBR(prevItem, 0);
NS_ENSURE_SUCCESS(res, res);
} else {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsEmptyNode(aListItem, &bIsEmptyNode, true);
NS_ENSURE_SUCCESS(res, res);
if (bIsEmptyNode)
{
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(aListItem);
if (nodeAtom == nsEditProperty::dd || nodeAtom == nsEditProperty::dt)
{
int32_t itemOffset;
nsCOMPtr<nsIDOMNode> list = nsEditor::GetNodeLocation(aListItem, &itemOffset);
nsAutoString listTag((nodeAtom == nsEditProperty::dt) ? NS_LITERAL_STRING("dd") : NS_LITERAL_STRING("dt"));
nsCOMPtr<nsIDOMNode> newListItem;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(listTag, list, itemOffset+1, getter_AddRefs(newListItem));
NS_ENSURE_SUCCESS(res, res);
res = mEditor->DeleteNode(aListItem);
NS_ENSURE_SUCCESS(res, res);
return aSelection->Collapse(newListItem, 0);
}
nsCOMPtr<nsIDOMNode> brNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CopyLastEditableChildStyles(prevItem, aListItem, getter_AddRefs(brNode));
NS_ENSURE_SUCCESS(res, res);
if (brNode)
{
int32_t offset;
nsCOMPtr<nsIDOMNode> brParent = nsEditor::GetNodeLocation(brNode, &offset);
return aSelection->Collapse(brParent, offset);
}
}
else
{
NS_ENSURE_STATE(mHTMLEditor);
nsWSRunObject wsObj(mHTMLEditor, aListItem, 0);
nsCOMPtr<nsIDOMNode> visNode;
int32_t visOffset = 0;
WSType wsType;
wsObj.NextVisibleNode(aListItem, 0, address_of(visNode),
&visOffset, &wsType);
if (wsType == WSType::special || wsType == WSType::br ||
nsHTMLEditUtils::IsHR(visNode)) {
int32_t offset;
nsCOMPtr<nsIDOMNode> parent = nsEditor::GetNodeLocation(visNode, &offset);
return aSelection->Collapse(parent, offset);
}
else
{
return aSelection->Collapse(visNode, visOffset);
}
}
}
}
res = aSelection->Collapse(aListItem,0);
return res;
}
///////////////////////////////////////////////////////////////////////////
// MakeBlockquote: put the list of nodes into one or more blockquotes.
//
nsresult
nsHTMLEditRules::MakeBlockquote(nsCOMArray<nsIDOMNode>& arrayOfNodes)
{
// the idea here is to put the nodes into a minimal number of
// blockquotes. When the user blockquotes something, they expect
// one blockquote. That may not be possible (for instance, if they
// have two table cells selected, you need two blockquotes inside the cells).
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> curNode, curParent, curBlock, newBlock;
int32_t offset;
int32_t listCount = arrayOfNodes.Count();
nsCOMPtr<nsIDOMNode> prevParent;
int32_t i;
for (i=0; i<listCount; i++)
{
// get the node to act on, and its location
curNode = arrayOfNodes[i];
curParent = nsEditor::GetNodeLocation(curNode, &offset);
// if the node is a table element or list item, dive inside
if (nsHTMLEditUtils::IsTableElementButNotTable(curNode) ||
nsHTMLEditUtils::IsListItem(curNode))
{
curBlock = 0; // forget any previous block
// recursion time
nsCOMArray<nsIDOMNode> childArray;
res = GetChildNodesForOperation(curNode, childArray);
NS_ENSURE_SUCCESS(res, res);
res = MakeBlockquote(childArray);
NS_ENSURE_SUCCESS(res, res);
}
// if the node has different parent than previous node,
// further nodes in a new parent
if (prevParent)
{
nsCOMPtr<nsIDOMNode> temp;
curNode->GetParentNode(getter_AddRefs(temp));
if (temp != prevParent)
{
curBlock = 0; // forget any previous blockquote node we were using
prevParent = temp;
}
}
else
{
curNode->GetParentNode(getter_AddRefs(prevParent));
}
// if no curBlock, make one
if (!curBlock)
{
NS_NAMED_LITERAL_STRING(quoteType, "blockquote");
res = SplitAsNeeded(&quoteType, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(quoteType, curParent, offset, getter_AddRefs(curBlock));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = curBlock;
// note: doesn't matter if we set mNewBlock multiple times.
}
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curBlock, -1);
NS_ENSURE_SUCCESS(res, res);
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// RemoveBlockStyle: make the nodes have no special block type.
//
nsresult
nsHTMLEditRules::RemoveBlockStyle(nsCOMArray<nsIDOMNode>& arrayOfNodes)
{
// intent of this routine is to be used for converting to/from
// headers, paragraphs, pre, and address. Those blocks
// that pretty much just contain inline things...
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> curBlock, firstNode, lastNode;
int32_t listCount = arrayOfNodes.Count();
for (int32_t i = 0; i < listCount; ++i) {
// get the node to act on, and its location
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[i];
nsCOMPtr<dom::Element> curElement = do_QueryInterface(curNode);
// if curNode is a address, p, header, address, or pre, remove it
if (curElement && nsHTMLEditUtils::IsFormatNode(curElement)) {
// process any partial progress saved
if (curBlock)
{
res = RemovePartOfBlock(curBlock, firstNode, lastNode);
NS_ENSURE_SUCCESS(res, res);
curBlock = 0; firstNode = 0; lastNode = 0;
}
// remove curent block
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveBlockContainer(curNode);
NS_ENSURE_SUCCESS(res, res);
} else if (curElement &&
(curElement->IsHTML(nsGkAtoms::table) ||
curElement->IsHTML(nsGkAtoms::tr) ||
curElement->IsHTML(nsGkAtoms::tbody) ||
curElement->IsHTML(nsGkAtoms::td) ||
nsHTMLEditUtils::IsList(curElement) ||
curElement->IsHTML(nsGkAtoms::li) ||
curElement->IsHTML(nsGkAtoms::blockquote) ||
curElement->IsHTML(nsGkAtoms::div))) {
// process any partial progress saved
if (curBlock)
{
res = RemovePartOfBlock(curBlock, firstNode, lastNode);
NS_ENSURE_SUCCESS(res, res);
curBlock = 0; firstNode = 0; lastNode = 0;
}
// recursion time
nsCOMArray<nsIDOMNode> childArray;
res = GetChildNodesForOperation(curNode, childArray);
NS_ENSURE_SUCCESS(res, res);
res = RemoveBlockStyle(childArray);
NS_ENSURE_SUCCESS(res, res);
}
else if (IsInlineNode(curNode))
{
if (curBlock)
{
// if so, is this node a descendant?
if (nsEditorUtils::IsDescendantOf(curNode, curBlock))
{
lastNode = curNode;
continue; // then we don't need to do anything different for this node
}
else
{
// otherwise, we have progressed beyond end of curBlock,
// so lets handle it now. We need to remove the portion of
// curBlock that contains [firstNode - lastNode].
res = RemovePartOfBlock(curBlock, firstNode, lastNode);
NS_ENSURE_SUCCESS(res, res);
curBlock = 0; firstNode = 0; lastNode = 0;
// fall out and handle curNode
}
}
NS_ENSURE_STATE(mHTMLEditor);
curBlock = mHTMLEditor->GetBlockNodeParent(curNode);
if (nsHTMLEditUtils::IsFormatNode(curBlock))
{
firstNode = curNode;
lastNode = curNode;
}
else
curBlock = 0; // not a block kind that we care about.
}
else
{ // some node that is already sans block style. skip over it and
// process any partial progress saved
if (curBlock)
{
res = RemovePartOfBlock(curBlock, firstNode, lastNode);
NS_ENSURE_SUCCESS(res, res);
curBlock = 0; firstNode = 0; lastNode = 0;
}
}
}
// process any partial progress saved
if (curBlock)
{
res = RemovePartOfBlock(curBlock, firstNode, lastNode);
NS_ENSURE_SUCCESS(res, res);
curBlock = 0; firstNode = 0; lastNode = 0;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// ApplyBlockStyle: do whatever it takes to make the list of nodes into
// one or more blocks of type blockTag.
//
nsresult
nsHTMLEditRules::ApplyBlockStyle(nsCOMArray<nsIDOMNode>& arrayOfNodes, const nsAString *aBlockTag)
{
// intent of this routine is to be used for converting to/from
// headers, paragraphs, pre, and address. Those blocks
// that pretty much just contain inline things...
NS_ENSURE_TRUE(aBlockTag, NS_ERROR_NULL_POINTER);
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> curNode, curParent, curBlock, newBlock;
int32_t offset;
int32_t listCount = arrayOfNodes.Count();
nsString tString(*aBlockTag);////MJUDGE SCC NEED HELP
// Remove all non-editable nodes. Leave them be.
int32_t j;
for (j=listCount-1; j>=0; j--)
{
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsEditable(arrayOfNodes[j]))
{
arrayOfNodes.RemoveObjectAt(j);
}
}
// reset list count
listCount = arrayOfNodes.Count();
int32_t i;
for (i=0; i<listCount; i++)
{
// get the node to act on, and its location
curNode = arrayOfNodes[i];
curParent = nsEditor::GetNodeLocation(curNode, &offset);
nsAutoString curNodeTag;
nsEditor::GetTagString(curNode, curNodeTag);
ToLowerCase(curNodeTag);
// is it already the right kind of block?
if (curNodeTag == *aBlockTag)
{
curBlock = 0; // forget any previous block used for previous inline nodes
continue; // do nothing to this block
}
// if curNode is a address, p, header, address, or pre, replace
// it with a new block of correct type.
// xxx floppy moose: pre can't hold everything the others can
if (nsHTMLEditUtils::IsMozDiv(curNode) ||
nsHTMLEditUtils::IsFormatNode(curNode))
{
curBlock = 0; // forget any previous block used for previous inline nodes
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->ReplaceContainer(curNode, address_of(newBlock), *aBlockTag,
nullptr, nullptr, true);
NS_ENSURE_SUCCESS(res, res);
}
else if (nsHTMLEditUtils::IsTable(curNode) ||
(curNodeTag.EqualsLiteral("tbody")) ||
(curNodeTag.EqualsLiteral("tr")) ||
(curNodeTag.EqualsLiteral("td")) ||
nsHTMLEditUtils::IsList(curNode) ||
(curNodeTag.EqualsLiteral("li")) ||
nsHTMLEditUtils::IsBlockquote(curNode) ||
nsHTMLEditUtils::IsDiv(curNode))
{
curBlock = 0; // forget any previous block used for previous inline nodes
// recursion time
nsCOMArray<nsIDOMNode> childArray;
res = GetChildNodesForOperation(curNode, childArray);
NS_ENSURE_SUCCESS(res, res);
int32_t childCount = childArray.Count();
if (childCount)
{
res = ApplyBlockStyle(childArray, aBlockTag);
NS_ENSURE_SUCCESS(res, res);
}
else
{
// make sure we can put a block here
res = SplitAsNeeded(aBlockTag, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
nsCOMPtr<nsIDOMNode> theBlock;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(*aBlockTag, curParent, offset, getter_AddRefs(theBlock));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = theBlock;
}
}
// if the node is a break, we honor it by putting further nodes in a new parent
else if (curNodeTag.EqualsLiteral("br"))
{
if (curBlock)
{
curBlock = 0; // forget any previous block used for previous inline nodes
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(curNode);
NS_ENSURE_SUCCESS(res, res);
}
else
{
// the break is the first (or even only) node we encountered. Create a
// block for it.
res = SplitAsNeeded(aBlockTag, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(*aBlockTag, curParent, offset, getter_AddRefs(curBlock));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = curBlock;
// note: doesn't matter if we set mNewBlock multiple times.
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curBlock, -1);
NS_ENSURE_SUCCESS(res, res);
}
}
// if curNode is inline, pull it into curBlock
// note: it's assumed that consecutive inline nodes in the
// arrayOfNodes are actually members of the same block parent.
// this happens to be true now as a side effect of how
// arrayOfNodes is contructed, but some additional logic should
// be added here if that should change
else if (IsInlineNode(curNode))
{
// if curNode is a non editable, drop it if we are going to <pre>
NS_ENSURE_STATE(mHTMLEditor);
if (tString.LowerCaseEqualsLiteral("pre")
&& (!mHTMLEditor->IsEditable(curNode)))
continue; // do nothing to this block
// if no curBlock, make one
if (!curBlock)
{
res = SplitAsNeeded(aBlockTag, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(*aBlockTag, curParent, offset, getter_AddRefs(curBlock));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = curBlock;
// note: doesn't matter if we set mNewBlock multiple times.
}
// if curNode is a Break, replace it with a return if we are going to <pre>
// xxx floppy moose
// this is a continuation of some inline nodes that belong together in
// the same block item. use curBlock
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curBlock, -1);
NS_ENSURE_SUCCESS(res, res);
}
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// SplitAsNeeded: given a tag name, split inOutParent up to the point
// where we can insert the tag. Adjust inOutParent and
// inOutOffset to pint to new location for tag.
nsresult
nsHTMLEditRules::SplitAsNeeded(const nsAString *aTag,
nsCOMPtr<nsIDOMNode> *inOutParent,
int32_t *inOutOffset)
{
NS_ENSURE_TRUE(aTag && inOutParent && inOutOffset, NS_ERROR_NULL_POINTER);
NS_ENSURE_TRUE(*inOutParent, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> tagParent, temp, splitNode, parent = *inOutParent;
nsresult res = NS_OK;
nsCOMPtr<nsIAtom> tagAtom = do_GetAtom(*aTag);
// check that we have a place that can legally contain the tag
while (!tagParent)
{
// sniffing up the parent tree until we find
// a legal place for the block
if (!parent) break;
// Don't leave the active editing host
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsDescendantOfEditorRoot(parent)) {
nsCOMPtr<nsIContent> parentContent = do_QueryInterface(parent);
NS_ENSURE_STATE(mHTMLEditor);
if (parentContent != mHTMLEditor->GetActiveEditingHost()) {
break;
}
}
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->CanContainTag(parent, tagAtom)) {
tagParent = parent;
break;
}
splitNode = parent;
parent->GetParentNode(getter_AddRefs(temp));
parent = temp;
}
if (!tagParent)
{
// could not find a place to build tag!
return NS_ERROR_FAILURE;
}
if (splitNode)
{
// we found a place for block, but above inOutParent. We need to split nodes.
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNodeDeep(splitNode, *inOutParent, *inOutOffset, inOutOffset);
NS_ENSURE_SUCCESS(res, res);
*inOutParent = tagParent;
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// JoinNodesSmart: join two nodes, doing whatever makes sense for their
// children (which often means joining them, too).
// aNodeLeft & aNodeRight must be same type of node.
nsresult
nsHTMLEditRules::JoinNodesSmart( nsIDOMNode *aNodeLeft,
nsIDOMNode *aNodeRight,
nsCOMPtr<nsIDOMNode> *aOutMergeParent,
int32_t *aOutMergeOffset)
{
// check parms
NS_ENSURE_TRUE(aNodeLeft &&
aNodeRight &&
aOutMergeParent &&
aOutMergeOffset, NS_ERROR_NULL_POINTER);
nsresult res = NS_OK;
// caller responsible for:
// left & right node are same type
int32_t parOffset;
nsCOMPtr<nsIDOMNode> rightParent;
nsCOMPtr<nsIDOMNode> parent = nsEditor::GetNodeLocation(aNodeLeft, &parOffset);
aNodeRight->GetParentNode(getter_AddRefs(rightParent));
// if they don't have the same parent, first move the 'right' node
// to after the 'left' one
if (parent != rightParent)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(aNodeRight, parent, parOffset);
NS_ENSURE_SUCCESS(res, res);
}
// defaults for outParams
*aOutMergeParent = aNodeRight;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetLengthOfDOMNode(aNodeLeft, *((uint32_t*)aOutMergeOffset));
NS_ENSURE_SUCCESS(res, res);
// separate join rules for differing blocks
if (nsHTMLEditUtils::IsList(aNodeLeft) ||
!mHTMLEditor ||
mHTMLEditor->IsTextNode(aNodeLeft))
{
// for list's, merge shallow (wouldn't want to combine list items)
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->JoinNodes(aNodeLeft, aNodeRight, parent);
NS_ENSURE_SUCCESS(res, res);
return res;
}
else
{
// remember the last left child, and firt right child
nsCOMPtr<nsIDOMNode> lastLeft, firstRight;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetLastEditableChild(aNodeLeft, address_of(lastLeft));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetFirstEditableChild(aNodeRight, address_of(firstRight));
NS_ENSURE_SUCCESS(res, res);
// for list items, divs, etc, merge smart
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->JoinNodes(aNodeLeft, aNodeRight, parent);
NS_ENSURE_SUCCESS(res, res);
if (lastLeft && firstRight && mHTMLEditor &&
mHTMLEditor->NodesSameType(lastLeft, firstRight) &&
(nsEditor::IsTextNode(lastLeft) ||
!mHTMLEditor ||
mHTMLEditor->mHTMLCSSUtils->ElementsSameStyle(lastLeft, firstRight))) {
NS_ENSURE_STATE(mHTMLEditor);
return JoinNodesSmart(lastLeft, firstRight, aOutMergeParent, aOutMergeOffset);
}
}
return res;
}
nsresult
nsHTMLEditRules::GetTopEnclosingMailCite(nsIDOMNode *aNode,
nsCOMPtr<nsIDOMNode> *aOutCiteNode,
bool aPlainText)
{
// check parms
NS_ENSURE_TRUE(aNode && aOutCiteNode, NS_ERROR_NULL_POINTER);
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> node, parentNode;
node = do_QueryInterface(aNode);
while (node)
{
if ( (aPlainText && nsHTMLEditUtils::IsPre(node)) ||
nsHTMLEditUtils::IsMailCite(node) )
*aOutCiteNode = node;
if (nsTextEditUtils::IsBody(node)) break;
res = node->GetParentNode(getter_AddRefs(parentNode));
NS_ENSURE_SUCCESS(res, res);
node = parentNode;
}
return res;
}
nsresult
nsHTMLEditRules::CacheInlineStyles(nsIDOMNode *aNode)
{
NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
NS_ENSURE_STATE(mHTMLEditor);
bool useCSS = mHTMLEditor->IsCSSEnabled();
for (int32_t j = 0; j < SIZE_STYLE_TABLE; ++j)
{
bool isSet = false;
nsAutoString outValue;
// Don't use CSS for <font size>, we don't support it usefully (bug 780035)
if (!useCSS || (mCachedStyles[j].tag == nsGkAtoms::font &&
mCachedStyles[j].attr.EqualsLiteral("size"))) {
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->IsTextPropertySetByContent(aNode, mCachedStyles[j].tag,
&(mCachedStyles[j].attr), nullptr,
isSet, &outValue);
}
else
{
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->IsCSSEquivalentToHTMLInlineStyleSet(aNode,
mCachedStyles[j].tag, &(mCachedStyles[j].attr), isSet, outValue,
nsHTMLCSSUtils::eComputed);
}
if (isSet)
{
mCachedStyles[j].mPresent = true;
mCachedStyles[j].value.Assign(outValue);
}
}
return NS_OK;
}
nsresult
nsHTMLEditRules::ReapplyCachedStyles()
{
// The idea here is to examine our cached list of styles and see if any have
// been removed. If so, add typeinstate for them, so that they will be
// reinserted when new content is added.
// remember if we are in css mode
NS_ENSURE_STATE(mHTMLEditor);
bool useCSS = mHTMLEditor->IsCSSEnabled();
// get selection point; if it doesn't exist, we have nothing to do
NS_ENSURE_STATE(mHTMLEditor);
nsRefPtr<Selection> selection = mHTMLEditor->GetSelection();
MOZ_ASSERT(selection);
if (!selection->GetRangeCount()) {
// Nothing to do
return NS_OK;
}
nsCOMPtr<nsIContent> selNode =
do_QueryInterface(selection->GetRangeAt(0)->GetStartParent());
if (!selNode) {
// Nothing to do
return NS_OK;
}
for (int32_t i = 0; i < SIZE_STYLE_TABLE; ++i) {
if (mCachedStyles[i].mPresent) {
bool bFirst, bAny, bAll;
bFirst = bAny = bAll = false;
nsAutoString curValue;
if (useCSS) {
// check computed style first in css case
NS_ENSURE_STATE(mHTMLEditor);
bAny = mHTMLEditor->mHTMLCSSUtils->IsCSSEquivalentToHTMLInlineStyleSet(
selNode, mCachedStyles[i].tag, &(mCachedStyles[i].attr), curValue,
nsHTMLCSSUtils::eComputed);
}
if (!bAny) {
// then check typeinstate and html style
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetInlinePropertyBase(mCachedStyles[i].tag,
&(mCachedStyles[i].attr),
&(mCachedStyles[i].value),
&bFirst, &bAny, &bAll,
&curValue, false);
NS_ENSURE_SUCCESS(res, res);
}
// this style has disappeared through deletion. Add to our typeinstate:
if (!bAny || IsStyleCachePreservingAction(mTheAction)) {
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mTypeInState->SetProp(mCachedStyles[i].tag,
mCachedStyles[i].attr,
mCachedStyles[i].value);
}
}
}
return NS_OK;
}
void
nsHTMLEditRules::ClearCachedStyles()
{
// clear the mPresent bits in mCachedStyles array
for (uint32_t j = 0; j < SIZE_STYLE_TABLE; j++) {
mCachedStyles[j].mPresent = false;
mCachedStyles[j].value.Truncate();
}
}
nsresult
nsHTMLEditRules::AdjustSpecialBreaks(bool aSafeToAskFrames)
{
nsCOMArray<nsIDOMNode> arrayOfNodes;
nsCOMPtr<nsISupports> isupports;
int32_t nodeCount,j;
// gather list of empty nodes
NS_ENSURE_STATE(mHTMLEditor);
nsEmptyEditableFunctor functor(mHTMLEditor);
nsDOMIterator iter;
nsresult res = iter.Init(mDocChangeRange);
NS_ENSURE_SUCCESS(res, res);
res = iter.AppendList(functor, arrayOfNodes);
NS_ENSURE_SUCCESS(res, res);
// put moz-br's into these empty li's and td's
nodeCount = arrayOfNodes.Count();
for (j = 0; j < nodeCount; j++)
{
// need to put br at END of node. It may have
// empty containers in it and still pass the "IsEmptynode" test,
// and we want the br's to be after them. Also, we want the br
// to be after the selection if the selection is in this node.
uint32_t len;
nsCOMPtr<nsIDOMNode> theNode = arrayOfNodes[0];
arrayOfNodes.RemoveObjectAt(0);
res = nsEditor::GetLengthOfDOMNode(theNode, len);
NS_ENSURE_SUCCESS(res, res);
res = CreateMozBR(theNode, (int32_t)len);
NS_ENSURE_SUCCESS(res, res);
}
return res;
}
nsresult
nsHTMLEditRules::AdjustWhitespace(nsISelection *aSelection)
{
// get selection point
nsCOMPtr<nsIDOMNode> selNode;
int32_t selOffset;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(selNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
// ask whitespace object to tweak nbsp's
NS_ENSURE_STATE(mHTMLEditor);
return nsWSRunObject(mHTMLEditor, selNode, selOffset).AdjustWhitespace();
}
nsresult
nsHTMLEditRules::PinSelectionToNewBlock(nsISelection *aSelection)
{
NS_ENSURE_TRUE(aSelection, NS_ERROR_NULL_POINTER);
if (!aSelection->Collapsed()) {
return NS_OK;
}
// get the (collapsed) selection location
nsCOMPtr<nsIDOMNode> selNode, temp;
int32_t selOffset;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(selNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
temp = selNode;
// use ranges and sRangeHelper to compare sel point to new block
nsCOMPtr<nsINode> node = do_QueryInterface(selNode);
NS_ENSURE_STATE(node);
nsRefPtr<nsRange> range = new nsRange(node);
res = range->SetStart(selNode, selOffset);
NS_ENSURE_SUCCESS(res, res);
res = range->SetEnd(selNode, selOffset);
NS_ENSURE_SUCCESS(res, res);
nsCOMPtr<nsIContent> block (do_QueryInterface(mNewBlock));
NS_ENSURE_TRUE(block, NS_ERROR_NO_INTERFACE);
bool nodeBefore, nodeAfter;
res = nsRange::CompareNodeToRange(block, range, &nodeBefore, &nodeAfter);
NS_ENSURE_SUCCESS(res, res);
if (nodeBefore && nodeAfter)
return NS_OK; // selection is inside block
else if (nodeBefore)
{
// selection is after block. put at end of block.
nsCOMPtr<nsIDOMNode> tmp = mNewBlock;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetLastEditableChild(mNewBlock, address_of(tmp));
uint32_t endPoint;
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->IsTextNode(tmp) || !mHTMLEditor ||
mHTMLEditor->IsContainer(tmp))
{
NS_ENSURE_STATE(mHTMLEditor);
res = nsEditor::GetLengthOfDOMNode(tmp, endPoint);
NS_ENSURE_SUCCESS(res, res);
}
else
{
tmp = nsEditor::GetNodeLocation(tmp, (int32_t*)&endPoint);
endPoint++; // want to be after this node
}
return aSelection->Collapse(tmp, (int32_t)endPoint);
}
else
{
// selection is before block. put at start of block.
nsCOMPtr<nsIDOMNode> tmp = mNewBlock;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetFirstEditableChild(mNewBlock, address_of(tmp));
int32_t offset;
if (!(mHTMLEditor->IsTextNode(tmp) || !mHTMLEditor ||
mHTMLEditor->IsContainer(tmp)))
{
tmp = nsEditor::GetNodeLocation(tmp, &offset);
}
NS_ENSURE_STATE(mHTMLEditor);
return aSelection->Collapse(tmp, 0);
}
}
nsresult
nsHTMLEditRules::CheckInterlinePosition(nsISelection *aSelection)
{
NS_ENSURE_TRUE(aSelection, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsISelection> selection(aSelection);
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
// if the selection isn't collapsed, do nothing.
if (!aSelection->Collapsed()) {
return NS_OK;
}
// get the (collapsed) selection location
nsCOMPtr<nsIDOMNode> selNode, node;
int32_t selOffset;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(selNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
// First, let's check to see if we are after a <br>. We take care of this
// special-case first so that we don't accidentally fall through into one
// of the other conditionals.
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLNode(selNode, selOffset, address_of(node), true);
if (node && nsTextEditUtils::IsBreak(node))
{
selPriv->SetInterlinePosition(true);
return NS_OK;
}
// are we after a block? If so try set caret to following content
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLSibling(selNode, selOffset, address_of(node));
if (node && IsBlockNode(node))
{
selPriv->SetInterlinePosition(true);
return NS_OK;
}
// are we before a block? If so try set caret to prior content
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetNextHTMLSibling(selNode, selOffset, address_of(node));
if (node && IsBlockNode(node))
selPriv->SetInterlinePosition(false);
return NS_OK;
}
nsresult
nsHTMLEditRules::AdjustSelection(nsISelection *aSelection, nsIEditor::EDirection aAction)
{
NS_ENSURE_TRUE(aSelection, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsISelection> selection(aSelection);
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
// if the selection isn't collapsed, do nothing.
// moose: one thing to do instead is check for the case of
// only a single break selected, and collapse it. Good thing? Beats me.
if (!aSelection->Collapsed()) {
return NS_OK;
}
// get the (collapsed) selection location
nsCOMPtr<nsIDOMNode> selNode, temp;
int32_t selOffset;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(selNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
temp = selNode;
// are we in an editable node?
NS_ENSURE_STATE(mHTMLEditor);
while (!mHTMLEditor->IsEditable(selNode))
{
// scan up the tree until we find an editable place to be
selNode = nsEditor::GetNodeLocation(temp, &selOffset);
NS_ENSURE_TRUE(selNode, NS_ERROR_FAILURE);
temp = selNode;
NS_ENSURE_STATE(mHTMLEditor);
}
// make sure we aren't in an empty block - user will see no cursor. If this
// is happening, put a <br> in the block if allowed.
nsCOMPtr<nsIDOMNode> theblock;
if (IsBlockNode(selNode)) {
theblock = selNode;
} else {
NS_ENSURE_STATE(mHTMLEditor);
theblock = mHTMLEditor->GetBlockNodeParent(selNode);
}
NS_ENSURE_STATE(mHTMLEditor);
if (theblock && mHTMLEditor->IsEditable(theblock)) {
bool bIsEmptyNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsEmptyNode(theblock, &bIsEmptyNode, false, false);
NS_ENSURE_SUCCESS(res, res);
// check if br can go into the destination node
NS_ENSURE_STATE(mHTMLEditor);
if (bIsEmptyNode && mHTMLEditor->CanContainTag(selNode, nsGkAtoms::br)) {
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIDOMNode> rootNode = do_QueryInterface(mHTMLEditor->GetRoot());
NS_ENSURE_TRUE(rootNode, NS_ERROR_FAILURE);
if (selNode == rootNode)
{
// Our root node is completely empty. Don't add a <br> here.
// AfterEditInner() will add one for us when it calls
// CreateBogusNodeIfNeeded()!
return NS_OK;
}
// we know we can skip the rest of this routine given the cirumstance
return CreateMozBR(selNode, selOffset);
}
}
// are we in a text node?
nsCOMPtr<nsIDOMCharacterData> textNode = do_QueryInterface(selNode);
if (textNode)
return NS_OK; // we LIKE it when we are in a text node. that RULZ
// do we need to insert a special mozBR? We do if we are:
// 1) prior node is in same block where selection is AND
// 2) prior node is a br AND
// 3) that br is not visible
nsCOMPtr<nsIDOMNode> nearNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetPriorHTMLNode(selNode, selOffset, address_of(nearNode));
NS_ENSURE_SUCCESS(res, res);
if (nearNode)
{
// is nearNode also a descendant of same block?
nsCOMPtr<nsIDOMNode> block, nearBlock;
if (IsBlockNode(selNode)) {
block = selNode;
} else {
NS_ENSURE_STATE(mHTMLEditor);
block = mHTMLEditor->GetBlockNodeParent(selNode);
}
NS_ENSURE_STATE(mHTMLEditor);
nearBlock = mHTMLEditor->GetBlockNodeParent(nearNode);
if (block == nearBlock)
{
if (nearNode && nsTextEditUtils::IsBreak(nearNode) )
{
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsVisBreak(nearNode))
{
// need to insert special moz BR. Why? Because if we don't
// the user will see no new line for the break. Also, things
// like table cells won't grow in height.
nsCOMPtr<nsIDOMNode> brNode;
res = CreateMozBR(selNode, selOffset, getter_AddRefs(brNode));
NS_ENSURE_SUCCESS(res, res);
selNode = nsEditor::GetNodeLocation(brNode, &selOffset);
// selection stays *before* moz-br, sticking to it
selPriv->SetInterlinePosition(true);
res = aSelection->Collapse(selNode,selOffset);
NS_ENSURE_SUCCESS(res, res);
}
else
{
nsCOMPtr<nsIDOMNode> nextNode;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetNextHTMLNode(nearNode, address_of(nextNode), true);
if (nextNode && nsTextEditUtils::IsMozBR(nextNode))
{
// selection between br and mozbr. make it stick to mozbr
// so that it will be on blank line.
selPriv->SetInterlinePosition(true);
}
}
}
}
}
// we aren't in a textnode: are we adjacent to text or a break or an image?
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetPriorHTMLNode(selNode, selOffset, address_of(nearNode), true);
NS_ENSURE_SUCCESS(res, res);
if (nearNode && (nsTextEditUtils::IsBreak(nearNode)
|| nsEditor::IsTextNode(nearNode)
|| nsHTMLEditUtils::IsImage(nearNode)
|| nsHTMLEditUtils::IsHR(nearNode)))
return NS_OK; // this is a good place for the caret to be
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLNode(selNode, selOffset, address_of(nearNode), true);
NS_ENSURE_SUCCESS(res, res);
if (nearNode && (nsTextEditUtils::IsBreak(nearNode)
|| nsEditor::IsTextNode(nearNode)
|| nsHTMLEditUtils::IsImage(nearNode)
|| nsHTMLEditUtils::IsHR(nearNode)))
return NS_OK; // this is a good place for the caret to be
// look for a nearby text node.
// prefer the correct direction.
res = FindNearSelectableNode(selNode, selOffset, aAction, address_of(nearNode));
NS_ENSURE_SUCCESS(res, res);
if (nearNode)
{
// is the nearnode a text node?
textNode = do_QueryInterface(nearNode);
if (textNode)
{
int32_t offset = 0;
// put selection in right place:
if (aAction == nsIEditor::ePrevious)
textNode->GetLength((uint32_t*)&offset);
res = aSelection->Collapse(nearNode,offset);
}
else // must be break or image
{
selNode = nsEditor::GetNodeLocation(nearNode, &selOffset);
if (aAction == nsIEditor::ePrevious) selOffset++; // want to be beyond it if we backed up to it
res = aSelection->Collapse(selNode, selOffset);
}
}
return res;
}
nsresult
nsHTMLEditRules::FindNearSelectableNode(nsIDOMNode *aSelNode,
int32_t aSelOffset,
nsIEditor::EDirection &aDirection,
nsCOMPtr<nsIDOMNode> *outSelectableNode)
{
NS_ENSURE_TRUE(aSelNode && outSelectableNode, NS_ERROR_NULL_POINTER);
*outSelectableNode = nullptr;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> nearNode, curNode;
if (aDirection == nsIEditor::ePrevious) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetPriorHTMLNode(aSelNode, aSelOffset, address_of(nearNode));
} else {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLNode(aSelNode, aSelOffset, address_of(nearNode));
}
NS_ENSURE_SUCCESS(res, res);
if (!nearNode) // try the other direction then
{
if (aDirection == nsIEditor::ePrevious)
aDirection = nsIEditor::eNext;
else
aDirection = nsIEditor::ePrevious;
if (aDirection == nsIEditor::ePrevious) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetPriorHTMLNode(aSelNode, aSelOffset, address_of(nearNode));
} else {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLNode(aSelNode, aSelOffset, address_of(nearNode));
}
NS_ENSURE_SUCCESS(res, res);
}
// scan in the right direction until we find an eligible text node,
// but don't cross any breaks, images, or table elements.
NS_ENSURE_STATE(mHTMLEditor);
while (nearNode && !(mHTMLEditor->IsTextNode(nearNode)
|| nsTextEditUtils::IsBreak(nearNode)
|| nsHTMLEditUtils::IsImage(nearNode)))
{
curNode = nearNode;
if (aDirection == nsIEditor::ePrevious) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetPriorHTMLNode(curNode, address_of(nearNode));
} else {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLNode(curNode, address_of(nearNode));
}
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
}
if (nearNode)
{
// don't cross any table elements
if (InDifferentTableElements(nearNode, aSelNode)) {
return NS_OK;
}
// otherwise, ok, we have found a good spot to put the selection
*outSelectableNode = do_QueryInterface(nearNode);
}
return res;
}
bool nsHTMLEditRules::InDifferentTableElements(nsIDOMNode* aNode1,
nsIDOMNode* aNode2)
{
nsCOMPtr<nsINode> node1 = do_QueryInterface(aNode1);
nsCOMPtr<nsINode> node2 = do_QueryInterface(aNode2);
return InDifferentTableElements(node1, node2);
}
bool
nsHTMLEditRules::InDifferentTableElements(nsINode* aNode1, nsINode* aNode2)
{
MOZ_ASSERT(aNode1 && aNode2);
while (aNode1 && !nsHTMLEditUtils::IsTableElement(aNode1)) {
aNode1 = aNode1->GetParentNode();
}
while (aNode2 && !nsHTMLEditUtils::IsTableElement(aNode2)) {
aNode2 = aNode2->GetParentNode();
}
return aNode1 != aNode2;
}
nsresult
nsHTMLEditRules::RemoveEmptyNodes()
{
// some general notes on the algorithm used here: the goal is to examine all the
// nodes in mDocChangeRange, and remove the empty ones. We do this by using a
// content iterator to traverse all the nodes in the range, and placing the empty
// nodes into an array. After finishing the iteration, we delete the empty nodes
// in the array. (they cannot be deleted as we find them becasue that would
// invalidate the iterator.)
// Since checking to see if a node is empty can be costly for nodes with many
// descendants, there are some optimizations made. I rely on the fact that the
// iterator is post-order: it will visit children of a node before visiting the
// parent node. So if I find that a child node is not empty, I know that its
// parent is not empty without even checking. So I put the parent on a "skipList"
// which is just a voidArray of nodes I can skip the empty check on. If I
// encounter a node on the skiplist, i skip the processing for that node and replace
// its slot in the skiplist with that node's parent.
// An interseting idea is to go ahead and regard parent nodes that are NOT on the
// skiplist as being empty (without even doing the IsEmptyNode check) on the theory
// that if they weren't empty, we would have encountered a non-empty child earlier
// and thus put this parent node on the skiplist.
// Unfortunately I can't use that strategy here, because the range may include
// some children of a node while excluding others. Thus I could find all the
// _examined_ children empty, but still not have an empty parent.
// need an iterator
nsCOMPtr<nsIContentIterator> iter =
do_CreateInstance("@mozilla.org/content/post-content-iterator;1");
NS_ENSURE_TRUE(iter, NS_ERROR_NULL_POINTER);
nsresult res = iter->Init(mDocChangeRange);
NS_ENSURE_SUCCESS(res, res);
nsCOMArray<nsINode> arrayOfEmptyNodes, arrayOfEmptyCites;
nsTArray<nsCOMPtr<nsINode> > skipList;
// check for empty nodes
while (!iter->IsDone()) {
nsINode* node = iter->GetCurrentNode();
NS_ENSURE_TRUE(node, NS_ERROR_FAILURE);
nsINode* parent = node->GetParentNode();
uint32_t idx = skipList.IndexOf(node);
if (idx != skipList.NoIndex) {
// this node is on our skip list. Skip processing for this node,
// and replace its value in the skip list with the value of its parent
skipList[idx] = parent;
} else {
bool bIsCandidate = false;
bool bIsEmptyNode = false;
bool bIsMailCite = false;
if (node->IsElement()) {
dom::Element* element = node->AsElement();
if (element->IsHTML(nsGkAtoms::body)) {
// don't delete the body
} else if ((bIsMailCite = nsHTMLEditUtils::IsMailCite(element)) ||
element->IsHTML(nsGkAtoms::a) ||
nsHTMLEditUtils::IsInlineStyle(element) ||
nsHTMLEditUtils::IsList(element) ||
element->IsHTML(nsGkAtoms::div)) {
// only consider certain nodes to be empty for purposes of removal
bIsCandidate = true;
} else if (nsHTMLEditUtils::IsFormatNode(element) ||
nsHTMLEditUtils::IsListItem(element) ||
element->IsHTML(nsGkAtoms::blockquote)) {
// these node types are candidates if selection is not in them
// if it is one of these, don't delete if selection inside.
// this is so we can create empty headings, etc, for the
// user to type into.
bool bIsSelInNode;
res = SelectionEndpointInNode(node, &bIsSelInNode);
NS_ENSURE_SUCCESS(res, res);
if (!bIsSelInNode)
{
bIsCandidate = true;
}
}
}
if (bIsCandidate) {
// we delete mailcites even if they have a solo br in them
// other nodes we require to be empty
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsEmptyNode(node->AsDOMNode(), &bIsEmptyNode,
bIsMailCite, true);
NS_ENSURE_SUCCESS(res, res);
if (bIsEmptyNode) {
if (bIsMailCite) {
// mailcites go on a separate list from other empty nodes
arrayOfEmptyCites.AppendObject(node);
} else {
arrayOfEmptyNodes.AppendObject(node);
}
}
}
if (!bIsEmptyNode) {
// put parent on skip list
skipList.AppendElement(parent);
}
}
iter->Next();
}
// now delete the empty nodes
int32_t nodeCount = arrayOfEmptyNodes.Count();
for (int32_t j = 0; j < nodeCount; j++) {
nsCOMPtr<nsIDOMNode> delNode = arrayOfEmptyNodes[0]->AsDOMNode();
arrayOfEmptyNodes.RemoveObjectAt(0);
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->IsModifiableNode(delNode)) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(delNode);
NS_ENSURE_SUCCESS(res, res);
}
}
// now delete the empty mailcites
// this is a separate step because we want to pull out any br's and preserve them.
nodeCount = arrayOfEmptyCites.Count();
for (int32_t j = 0; j < nodeCount; j++) {
nsCOMPtr<nsIDOMNode> delNode = arrayOfEmptyCites[0]->AsDOMNode();
arrayOfEmptyCites.RemoveObjectAt(0);
bool bIsEmptyNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsEmptyNode(delNode, &bIsEmptyNode, false, true);
NS_ENSURE_SUCCESS(res, res);
if (!bIsEmptyNode)
{
// we are deleting a cite that has just a br. We want to delete cite,
// but preserve br.
nsCOMPtr<nsIDOMNode> parent, brNode;
int32_t offset;
parent = nsEditor::GetNodeLocation(delNode, &offset);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(parent, offset, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
}
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(delNode);
NS_ENSURE_SUCCESS(res, res);
}
return res;
}
nsresult
nsHTMLEditRules::SelectionEndpointInNode(nsINode* aNode, bool* aResult)
{
NS_ENSURE_TRUE(aNode && aResult, NS_ERROR_NULL_POINTER);
nsIDOMNode* node = aNode->AsDOMNode();
*aResult = false;
nsCOMPtr<nsISelection>selection;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
Selection* sel = static_cast<Selection*>(selection.get());
uint32_t rangeCount = sel->GetRangeCount();
for (uint32_t rangeIdx = 0; rangeIdx < rangeCount; ++rangeIdx) {
nsRefPtr<nsRange> range = sel->GetRangeAt(rangeIdx);
nsCOMPtr<nsIDOMNode> startParent, endParent;
range->GetStartContainer(getter_AddRefs(startParent));
if (startParent)
{
if (node == startParent) {
*aResult = true;
return NS_OK;
}
if (nsEditorUtils::IsDescendantOf(startParent, node)) {
*aResult = true;
return NS_OK;
}
}
range->GetEndContainer(getter_AddRefs(endParent));
if (startParent == endParent) continue;
if (endParent)
{
if (node == endParent) {
*aResult = true;
return NS_OK;
}
if (nsEditorUtils::IsDescendantOf(endParent, node)) {
*aResult = true;
return NS_OK;
}
}
}
return res;
}
///////////////////////////////////////////////////////////////////////////
// IsEmptyInline: return true if aNode is an empty inline container
//
//
bool
nsHTMLEditRules::IsEmptyInline(nsIDOMNode *aNode)
{
if (aNode && IsInlineNode(aNode) && mHTMLEditor &&
mHTMLEditor->IsContainer(aNode))
{
bool bEmpty;
NS_ENSURE_TRUE(mHTMLEditor, false);
mHTMLEditor->IsEmptyNode(aNode, &bEmpty);
return bEmpty;
}
return false;
}
bool
nsHTMLEditRules::ListIsEmptyLine(nsCOMArray<nsIDOMNode> &arrayOfNodes)
{
// we have a list of nodes which we are candidates for being moved
// into a new block. Determine if it's anything more than a blank line.
// Look for editable content above and beyond one single BR.
int32_t listCount = arrayOfNodes.Count();
NS_ENSURE_TRUE(listCount, true);
nsCOMPtr<nsIDOMNode> somenode;
int32_t j, brCount=0;
for (j = 0; j < listCount; j++)
{
somenode = arrayOfNodes[j];
NS_ENSURE_TRUE(mHTMLEditor, false);
if (somenode && mHTMLEditor->IsEditable(somenode))
{
if (nsTextEditUtils::IsBreak(somenode))
{
// first break doesn't count
if (brCount) return false;
brCount++;
}
else if (IsEmptyInline(somenode))
{
// empty inline, keep looking
}
else return false;
}
}
return true;
}
nsresult
nsHTMLEditRules::PopListItem(nsIDOMNode *aListItem, bool *aOutOfList)
{
// check parms
NS_ENSURE_TRUE(aListItem && aOutOfList, NS_ERROR_NULL_POINTER);
// init out params
*aOutOfList = false;
nsCOMPtr<nsIDOMNode> curNode( do_QueryInterface(aListItem));
int32_t offset;
nsCOMPtr<nsIDOMNode> curParent = nsEditor::GetNodeLocation(curNode, &offset);
if (!nsHTMLEditUtils::IsListItem(curNode))
return NS_ERROR_FAILURE;
// if it's first or last list item, don't need to split the list
// otherwise we do.
int32_t parOffset;
nsCOMPtr<nsIDOMNode> curParPar = nsEditor::GetNodeLocation(curParent, &parOffset);
bool bIsFirstListItem;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->IsFirstEditableChild(curNode, &bIsFirstListItem);
NS_ENSURE_SUCCESS(res, res);
bool bIsLastListItem;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->IsLastEditableChild(curNode, &bIsLastListItem);
NS_ENSURE_SUCCESS(res, res);
if (!bIsFirstListItem && !bIsLastListItem)
{
// split the list
nsCOMPtr<nsIDOMNode> newBlock;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SplitNode(curParent, offset, getter_AddRefs(newBlock));
NS_ENSURE_SUCCESS(res, res);
}
if (!bIsFirstListItem) parOffset++;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curParPar, parOffset);
NS_ENSURE_SUCCESS(res, res);
// unwrap list item contents if they are no longer in a list
if (!nsHTMLEditUtils::IsList(curParPar)
&& nsHTMLEditUtils::IsListItem(curNode))
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveBlockContainer(curNode);
NS_ENSURE_SUCCESS(res, res);
*aOutOfList = true;
}
return res;
}
nsresult
nsHTMLEditRules::RemoveListStructure(nsIDOMNode *aList)
{
NS_ENSURE_ARG_POINTER(aList);
nsresult res;
nsCOMPtr<nsIDOMNode> child;
aList->GetFirstChild(getter_AddRefs(child));
while (child)
{
if (nsHTMLEditUtils::IsListItem(child))
{
bool bOutOfList;
do
{
res = PopListItem(child, &bOutOfList);
NS_ENSURE_SUCCESS(res, res);
} while (!bOutOfList); // keep popping it out until it's not in a list anymore
}
else if (nsHTMLEditUtils::IsList(child))
{
res = RemoveListStructure(child);
NS_ENSURE_SUCCESS(res, res);
}
else
{
// delete any non- list items for now
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(child);
NS_ENSURE_SUCCESS(res, res);
}
aList->GetFirstChild(getter_AddRefs(child));
}
// delete the now-empty list
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveBlockContainer(aList);
NS_ENSURE_SUCCESS(res, res);
return res;
}
nsresult
nsHTMLEditRules::ConfirmSelectionInBody()
{
nsresult res = NS_OK;
// get the body
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIDOMElement> rootElement = do_QueryInterface(mHTMLEditor->GetRoot());
NS_ENSURE_TRUE(rootElement, NS_ERROR_UNEXPECTED);
// get the selection
nsCOMPtr<nsISelection>selection;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetSelection(getter_AddRefs(selection));
NS_ENSURE_SUCCESS(res, res);
// get the selection start location
nsCOMPtr<nsIDOMNode> selNode, temp, parent;
int32_t selOffset;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(selection, getter_AddRefs(selNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
temp = selNode;
// check that selNode is inside body
while (temp && !nsTextEditUtils::IsBody(temp))
{
res = temp->GetParentNode(getter_AddRefs(parent));
temp = parent;
}
// if we aren't in the body, force the issue
if (!temp)
{
// uncomment this to see when we get bad selections
// NS_NOTREACHED("selection not in body");
selection->Collapse(rootElement, 0);
}
// get the selection end location
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetEndNodeAndOffset(selection, getter_AddRefs(selNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
temp = selNode;
// check that selNode is inside body
while (temp && !nsTextEditUtils::IsBody(temp))
{
res = temp->GetParentNode(getter_AddRefs(parent));
temp = parent;
}
// if we aren't in the body, force the issue
if (!temp)
{
// uncomment this to see when we get bad selections
// NS_NOTREACHED("selection not in body");
selection->Collapse(rootElement, 0);
}
return res;
}
nsresult
nsHTMLEditRules::UpdateDocChangeRange(nsIDOMRange *aRange)
{
nsresult res = NS_OK;
// first make sure aRange is in the document. It might not be if
// portions of our editting action involved manipulating nodes
// prior to placing them in the document (e.g., populating a list item
// before placing it in its list)
nsCOMPtr<nsIDOMNode> startNode;
res = aRange->GetStartContainer(getter_AddRefs(startNode));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsDescendantOfRoot(startNode)) {
// just return - we don't need to adjust mDocChangeRange in this case
return NS_OK;
}
if (!mDocChangeRange)
{
// clone aRange.
nsCOMPtr<nsIDOMRange> range;
res = aRange->CloneRange(getter_AddRefs(range));
mDocChangeRange = static_cast<nsRange*>(range.get());
}
else
{
int16_t result;
// compare starts of ranges
res = mDocChangeRange->CompareBoundaryPoints(nsIDOMRange::START_TO_START, aRange, &result);
if (res == NS_ERROR_NOT_INITIALIZED) {
// This will happen is mDocChangeRange is non-null, but the range is
// uninitialized. In this case we'll set the start to aRange start.
// The same test won't be needed further down since after we've set
// the start the range will be collapsed to that point.
result = 1;
res = NS_OK;
}
NS_ENSURE_SUCCESS(res, res);
if (result > 0) // positive result means mDocChangeRange start is after aRange start
{
int32_t startOffset;
res = aRange->GetStartOffset(&startOffset);
NS_ENSURE_SUCCESS(res, res);
res = mDocChangeRange->SetStart(startNode, startOffset);
NS_ENSURE_SUCCESS(res, res);
}
// compare ends of ranges
res = mDocChangeRange->CompareBoundaryPoints(nsIDOMRange::END_TO_END, aRange, &result);
NS_ENSURE_SUCCESS(res, res);
if (result < 0) // negative result means mDocChangeRange end is before aRange end
{
nsCOMPtr<nsIDOMNode> endNode;
int32_t endOffset;
res = aRange->GetEndContainer(getter_AddRefs(endNode));
NS_ENSURE_SUCCESS(res, res);
res = aRange->GetEndOffset(&endOffset);
NS_ENSURE_SUCCESS(res, res);
res = mDocChangeRange->SetEnd(endNode, endOffset);
NS_ENSURE_SUCCESS(res, res);
}
}
return res;
}
nsresult
nsHTMLEditRules::InsertMozBRIfNeeded(nsIDOMNode *aNode)
{
NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
if (!IsBlockNode(aNode)) return NS_OK;
bool isEmpty;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->IsEmptyNode(aNode, &isEmpty);
NS_ENSURE_SUCCESS(res, res);
if (!isEmpty) {
return NS_OK;
}
return CreateMozBR(aNode, 0);
}
NS_IMETHODIMP
nsHTMLEditRules::WillCreateNode(const nsAString& aTag, nsIDOMNode *aParent, int32_t aPosition)
{
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::DidCreateNode(const nsAString& aTag,
nsIDOMNode *aNode,
nsIDOMNode *aParent,
int32_t aPosition,
nsresult aResult)
{
if (!mListenerEnabled) {
return NS_OK;
}
// assumption that Join keeps the righthand node
nsresult res = mUtilRange->SelectNode(aNode);
NS_ENSURE_SUCCESS(res, res);
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillInsertNode(nsIDOMNode *aNode, nsIDOMNode *aParent, int32_t aPosition)
{
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::DidInsertNode(nsIDOMNode *aNode,
nsIDOMNode *aParent,
int32_t aPosition,
nsresult aResult)
{
if (!mListenerEnabled) {
return NS_OK;
}
nsresult res = mUtilRange->SelectNode(aNode);
NS_ENSURE_SUCCESS(res, res);
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillDeleteNode(nsIDOMNode *aChild)
{
if (!mListenerEnabled) {
return NS_OK;
}
nsresult res = mUtilRange->SelectNode(aChild);
NS_ENSURE_SUCCESS(res, res);
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::DidDeleteNode(nsIDOMNode *aChild, nsresult aResult)
{
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::WillSplitNode(nsIDOMNode *aExistingRightNode, int32_t aOffset)
{
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::DidSplitNode(nsIDOMNode *aExistingRightNode,
int32_t aOffset,
nsIDOMNode *aNewLeftNode,
nsresult aResult)
{
if (!mListenerEnabled) {
return NS_OK;
}
nsresult res = mUtilRange->SetStart(aNewLeftNode, 0);
NS_ENSURE_SUCCESS(res, res);
res = mUtilRange->SetEnd(aExistingRightNode, 0);
NS_ENSURE_SUCCESS(res, res);
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillJoinNodes(nsIDOMNode *aLeftNode, nsIDOMNode *aRightNode, nsIDOMNode *aParent)
{
if (!mListenerEnabled) {
return NS_OK;
}
// remember split point
nsresult res = nsEditor::GetLengthOfDOMNode(aLeftNode, mJoinOffset);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::DidJoinNodes(nsIDOMNode *aLeftNode,
nsIDOMNode *aRightNode,
nsIDOMNode *aParent,
nsresult aResult)
{
if (!mListenerEnabled) {
return NS_OK;
}
// assumption that Join keeps the righthand node
nsresult res = mUtilRange->SetStart(aRightNode, mJoinOffset);
NS_ENSURE_SUCCESS(res, res);
res = mUtilRange->SetEnd(aRightNode, mJoinOffset);
NS_ENSURE_SUCCESS(res, res);
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillInsertText(nsIDOMCharacterData *aTextNode, int32_t aOffset, const nsAString &aString)
{
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::DidInsertText(nsIDOMCharacterData *aTextNode,
int32_t aOffset,
const nsAString &aString,
nsresult aResult)
{
if (!mListenerEnabled) {
return NS_OK;
}
int32_t length = aString.Length();
nsCOMPtr<nsIDOMNode> theNode = do_QueryInterface(aTextNode);
nsresult res = mUtilRange->SetStart(theNode, aOffset);
NS_ENSURE_SUCCESS(res, res);
res = mUtilRange->SetEnd(theNode, aOffset+length);
NS_ENSURE_SUCCESS(res, res);
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillDeleteText(nsIDOMCharacterData *aTextNode, int32_t aOffset, int32_t aLength)
{
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditRules::DidDeleteText(nsIDOMCharacterData *aTextNode,
int32_t aOffset,
int32_t aLength,
nsresult aResult)
{
if (!mListenerEnabled) {
return NS_OK;
}
nsCOMPtr<nsIDOMNode> theNode = do_QueryInterface(aTextNode);
nsresult res = mUtilRange->SetStart(theNode, aOffset);
NS_ENSURE_SUCCESS(res, res);
res = mUtilRange->SetEnd(theNode, aOffset);
NS_ENSURE_SUCCESS(res, res);
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::WillDeleteSelection(nsISelection *aSelection)
{
if (!mListenerEnabled) {
return NS_OK;
}
// get the (collapsed) selection location
nsCOMPtr<nsIDOMNode> selNode;
int32_t selOffset;
NS_ENSURE_STATE(mHTMLEditor);
nsresult res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(selNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
res = mUtilRange->SetStart(selNode, selOffset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetEndNodeAndOffset(aSelection, getter_AddRefs(selNode), &selOffset);
NS_ENSURE_SUCCESS(res, res);
res = mUtilRange->SetEnd(selNode, selOffset);
NS_ENSURE_SUCCESS(res, res);
res = UpdateDocChangeRange(mUtilRange);
return res;
}
NS_IMETHODIMP
nsHTMLEditRules::DidDeleteSelection(nsISelection *aSelection)
{
return NS_OK;
}
// Let's remove all alignment hints in the children of aNode; it can
// be an ALIGN attribute (in case we just remove it) or a CENTER
// element (here we have to remove the container and keep its
// children). We break on tables and don't look at their children.
nsresult
nsHTMLEditRules::RemoveAlignment(nsIDOMNode * aNode, const nsAString & aAlignType, bool aChildrenOnly)
{
NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->IsTextNode(aNode) || nsHTMLEditUtils::IsTable(aNode)) return NS_OK;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> child = aNode,tmp;
if (aChildrenOnly)
{
aNode->GetFirstChild(getter_AddRefs(child));
}
NS_ENSURE_STATE(mHTMLEditor);
bool useCSS = mHTMLEditor->IsCSSEnabled();
while (child)
{
if (aChildrenOnly) {
// get the next sibling right now because we could have to remove child
child->GetNextSibling(getter_AddRefs(tmp));
}
else
{
tmp = nullptr;
}
bool isBlock;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->NodeIsBlockStatic(child, &isBlock);
NS_ENSURE_SUCCESS(res, res);
if (nsEditor::NodeIsType(child, nsEditProperty::center))
{
// the current node is a CENTER element
// first remove children's alignment
res = RemoveAlignment(child, aAlignType, true);
NS_ENSURE_SUCCESS(res, res);
// we may have to insert BRs in first and last position of element's children
// if the nodes before/after are not blocks and not BRs
res = MakeSureElemStartsOrEndsOnCR(child);
NS_ENSURE_SUCCESS(res, res);
// now remove the CENTER container
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveContainer(child);
NS_ENSURE_SUCCESS(res, res);
}
else if (isBlock || nsHTMLEditUtils::IsHR(child))
{
// the current node is a block element
nsCOMPtr<nsIDOMElement> curElem = do_QueryInterface(child);
if (nsHTMLEditUtils::SupportsAlignAttr(child))
{
// remove the ALIGN attribute if this element can have it
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->RemoveAttribute(curElem, NS_LITERAL_STRING("align"));
NS_ENSURE_SUCCESS(res, res);
}
if (useCSS)
{
if (nsHTMLEditUtils::IsTable(child) || nsHTMLEditUtils::IsHR(child))
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SetAttributeOrEquivalent(curElem, NS_LITERAL_STRING("align"), aAlignType, false);
}
else
{
nsAutoString dummyCssValue;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->mHTMLCSSUtils->RemoveCSSInlineStyle(child, nsEditProperty::cssTextAlign, dummyCssValue);
}
NS_ENSURE_SUCCESS(res, res);
}
if (!nsHTMLEditUtils::IsTable(child))
{
// unless this is a table, look at children
res = RemoveAlignment(child, aAlignType, true);
NS_ENSURE_SUCCESS(res, res);
}
}
child = tmp;
}
return NS_OK;
}
// Let's insert a BR as first (resp. last) child of aNode if its
// first (resp. last) child is not a block nor a BR, and if the
// previous (resp. next) sibling is not a block nor a BR
nsresult
nsHTMLEditRules::MakeSureElemStartsOrEndsOnCR(nsIDOMNode *aNode, bool aStarts)
{
NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> child;
nsresult res;
if (aStarts)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetFirstEditableChild(aNode, address_of(child));
}
else
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetLastEditableChild(aNode, address_of(child));
}
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(child, NS_OK);
bool isChildBlock;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->NodeIsBlockStatic(child, &isChildBlock);
NS_ENSURE_SUCCESS(res, res);
bool foundCR = false;
if (isChildBlock || nsTextEditUtils::IsBreak(child))
{
foundCR = true;
}
else
{
nsCOMPtr<nsIDOMNode> sibling;
if (aStarts)
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetPriorHTMLSibling(aNode, address_of(sibling));
}
else
{
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetNextHTMLSibling(aNode, address_of(sibling));
}
NS_ENSURE_SUCCESS(res, res);
if (sibling)
{
bool isBlock;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->NodeIsBlockStatic(sibling, &isBlock);
NS_ENSURE_SUCCESS(res, res);
if (isBlock || nsTextEditUtils::IsBreak(sibling))
{
foundCR = true;
}
}
else
{
foundCR = true;
}
}
if (!foundCR)
{
int32_t offset = 0;
if (!aStarts) {
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
NS_ENSURE_STATE(node);
offset = node->GetChildCount();
}
nsCOMPtr<nsIDOMNode> brNode;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateBR(aNode, offset, address_of(brNode));
NS_ENSURE_SUCCESS(res, res);
}
return NS_OK;
}
nsresult
nsHTMLEditRules::MakeSureElemStartsOrEndsOnCR(nsIDOMNode *aNode)
{
nsresult res = MakeSureElemStartsOrEndsOnCR(aNode, false);
NS_ENSURE_SUCCESS(res, res);
res = MakeSureElemStartsOrEndsOnCR(aNode, true);
return res;
}
nsresult
nsHTMLEditRules::AlignBlock(nsIDOMElement * aElement, const nsAString * aAlignType, bool aContentsOnly)
{
NS_ENSURE_TRUE(aElement, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(aElement);
bool isBlock = IsBlockNode(node);
if (!isBlock && !nsHTMLEditUtils::IsHR(node)) {
// we deal only with blocks; early way out
return NS_OK;
}
nsresult res = RemoveAlignment(node, *aAlignType, aContentsOnly);
NS_ENSURE_SUCCESS(res, res);
NS_NAMED_LITERAL_STRING(attr, "align");
NS_ENSURE_STATE(mHTMLEditor);
if (mHTMLEditor->IsCSSEnabled()) {
// let's use CSS alignment; we use margin-left and margin-right for tables
// and text-align for other block-level elements
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SetAttributeOrEquivalent(aElement, attr, *aAlignType, false);
NS_ENSURE_SUCCESS(res, res);
}
else {
// HTML case; this code is supposed to be called ONLY if the element
// supports the align attribute but we'll never know...
if (nsHTMLEditUtils::SupportsAlignAttr(node)) {
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->SetAttribute(aElement, attr, *aAlignType);
NS_ENSURE_SUCCESS(res, res);
}
}
return NS_OK;
}
nsresult
nsHTMLEditRules::RelativeChangeIndentationOfElementNode(nsIDOMNode *aNode, int8_t aRelativeChange)
{
NS_ENSURE_ARG_POINTER(aNode);
if (aRelativeChange != 1 && aRelativeChange != -1) {
return NS_ERROR_ILLEGAL_VALUE;
}
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(aNode);
if (!element) {
return NS_OK;
}
NS_ENSURE_STATE(mHTMLEditor);
nsIAtom* marginProperty = MarginPropertyAtomForIndent(mHTMLEditor->mHTMLCSSUtils, element);
nsAutoString value;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->GetSpecifiedProperty(aNode, marginProperty, value);
float f;
nsCOMPtr<nsIAtom> unit;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->ParseLength(value, &f, getter_AddRefs(unit));
if (0 == f) {
nsAutoString defaultLengthUnit;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->GetDefaultLengthUnit(defaultLengthUnit);
unit = do_GetAtom(defaultLengthUnit);
}
if (nsEditProperty::cssInUnit == unit)
f += NS_EDITOR_INDENT_INCREMENT_IN * aRelativeChange;
else if (nsEditProperty::cssCmUnit == unit)
f += NS_EDITOR_INDENT_INCREMENT_CM * aRelativeChange;
else if (nsEditProperty::cssMmUnit == unit)
f += NS_EDITOR_INDENT_INCREMENT_MM * aRelativeChange;
else if (nsEditProperty::cssPtUnit == unit)
f += NS_EDITOR_INDENT_INCREMENT_PT * aRelativeChange;
else if (nsEditProperty::cssPcUnit == unit)
f += NS_EDITOR_INDENT_INCREMENT_PC * aRelativeChange;
else if (nsEditProperty::cssEmUnit == unit)
f += NS_EDITOR_INDENT_INCREMENT_EM * aRelativeChange;
else if (nsEditProperty::cssExUnit == unit)
f += NS_EDITOR_INDENT_INCREMENT_EX * aRelativeChange;
else if (nsEditProperty::cssPxUnit == unit)
f += NS_EDITOR_INDENT_INCREMENT_PX * aRelativeChange;
else if (nsEditProperty::cssPercentUnit == unit)
f += NS_EDITOR_INDENT_INCREMENT_PERCENT * aRelativeChange;
if (0 < f) {
nsAutoString newValue;
newValue.AppendFloat(f);
newValue.Append(nsDependentAtomString(unit));
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->SetCSSProperty(element, marginProperty, newValue, false);
return NS_OK;
}
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->mHTMLCSSUtils->RemoveCSSProperty(element, marginProperty, value, false);
// remove unnecessary DIV blocks:
// we could skip this section but that would cause a FAIL in
// editor/libeditor/html/tests/browserscope/richtext.html, which expects
// to unapply a CSS "indent" (<div style="margin-left: 40px;">) by
// removing the DIV container instead of just removing the CSS property.
nsCOMPtr<dom::Element> node = do_QueryInterface(aNode);
if (!node || !node->IsHTML(nsGkAtoms::div) ||
!mHTMLEditor ||
node == mHTMLEditor->GetActiveEditingHost() ||
!mHTMLEditor->IsDescendantOfEditorRoot(node) ||
nsHTMLEditor::HasAttributes(node)) {
NS_ENSURE_STATE(mHTMLEditor);
return NS_OK;
}
NS_ENSURE_STATE(mHTMLEditor);
return mHTMLEditor->RemoveContainer(element);
}
//
// Support for Absolute Positioning
//
nsresult
nsHTMLEditRules::WillAbsolutePosition(Selection* aSelection,
bool* aCancel, bool* aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
nsresult res = WillInsert(aSelection, aCancel);
NS_ENSURE_SUCCESS(res, res);
// initialize out param
// we want to ignore result of WillInsert()
*aCancel = false;
*aHandled = true;
nsCOMPtr<nsIDOMElement> focusElement;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetSelectionContainer(getter_AddRefs(focusElement));
if (focusElement) {
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(focusElement);
if (nsHTMLEditUtils::IsImage(node)) {
mNewBlock = node;
return NS_OK;
}
}
res = NormalizeSelection(aSelection);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
nsAutoSelectionReset selectionResetter(aSelection, mHTMLEditor);
// convert the selection ranges into "promoted" selection ranges:
// this basically just expands the range to include the immediate
// block parent, and then further expands to include any ancestors
// whose children are all in the range
nsCOMArray<nsIDOMRange> arrayOfRanges;
res = GetPromotedRanges(aSelection, arrayOfRanges,
EditAction::setAbsolutePosition);
NS_ENSURE_SUCCESS(res, res);
// use these ranges to contruct a list of nodes to act on.
nsCOMArray<nsIDOMNode> arrayOfNodes;
res = GetNodesForOperation(arrayOfRanges, arrayOfNodes,
EditAction::setAbsolutePosition);
NS_ENSURE_SUCCESS(res, res);
NS_NAMED_LITERAL_STRING(divType, "div");
// if nothing visible in list, make an empty block
if (ListIsEmptyLine(arrayOfNodes))
{
nsCOMPtr<nsIDOMNode> parent, thePositionedDiv;
int32_t offset;
// get selection location
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetStartNodeAndOffset(aSelection, getter_AddRefs(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
// make sure we can put a block here
res = SplitAsNeeded(&divType, address_of(parent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(divType, parent, offset, getter_AddRefs(thePositionedDiv));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = thePositionedDiv;
// delete anything that was in the list of nodes
for (int32_t j = arrayOfNodes.Count() - 1; j >= 0; --j)
{
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[0];
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->DeleteNode(curNode);
NS_ENSURE_SUCCESS(res, res);
arrayOfNodes.RemoveObjectAt(0);
}
// put selection in new block
res = aSelection->Collapse(thePositionedDiv,0);
selectionResetter.Abort(); // to prevent selection reseter from overriding us.
*aHandled = true;
return res;
}
// Ok, now go through all the nodes and put them in a blockquote,
// or whatever is appropriate. Wohoo!
int32_t i;
nsCOMPtr<nsIDOMNode> curParent, curPositionedDiv, curList, indentedLI, sibling;
int32_t listCount = arrayOfNodes.Count();
for (i=0; i<listCount; i++)
{
// here's where we actually figure out what to do
nsCOMPtr<nsIDOMNode> curNode = arrayOfNodes[i];
// Ignore all non-editable nodes. Leave them be.
NS_ENSURE_STATE(mHTMLEditor);
if (!mHTMLEditor->IsEditable(curNode)) continue;
int32_t offset;
curParent = nsEditor::GetNodeLocation(curNode, &offset);
// some logic for putting list items into nested lists...
if (nsHTMLEditUtils::IsList(curParent))
{
// check to see if curList is still appropriate. Which it is if
// curNode is still right after it in the same list.
if (curList)
{
sibling = nullptr;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLSibling(curNode, address_of(sibling));
}
if (!curList || (sibling && sibling != curList) )
{
nsAutoString listTag;
nsEditor::GetTagString(curParent,listTag);
ToLowerCase(listTag);
// create a new nested list of correct type
res = SplitAsNeeded(&listTag, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
if (!curPositionedDiv) {
int32_t parentOffset;
nsCOMPtr<nsIDOMNode> curParentParent = nsEditor::GetNodeLocation(curParent, &parentOffset);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(divType, curParentParent, parentOffset, getter_AddRefs(curPositionedDiv));
mNewBlock = curPositionedDiv;
}
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(listTag, curPositionedDiv, -1, getter_AddRefs(curList));
NS_ENSURE_SUCCESS(res, res);
// curList is now the correct thing to put curNode in
// remember our new block for postprocessing
// mNewBlock = curList;
}
// tuck the node into the end of the active list
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curList, -1);
NS_ENSURE_SUCCESS(res, res);
// forget curPositionedDiv, if any
// curPositionedDiv = nullptr;
}
else // not a list item, use blockquote?
{
// if we are inside a list item, we don't want to blockquote, we want
// to sublist the list item. We may have several nodes listed in the
// array of nodes to act on, that are in the same list item. Since
// we only want to indent that li once, we must keep track of the most
// recent indented list item, and not indent it if we find another node
// to act on that is still inside the same li.
nsCOMPtr<nsIDOMNode> listitem=IsInListItem(curNode);
if (listitem)
{
if (indentedLI == listitem) continue; // already indented this list item
curParent = nsEditor::GetNodeLocation(listitem, &offset);
// check to see if curList is still appropriate. Which it is if
// curNode is still right after it in the same list.
if (curList)
{
sibling = nullptr;
NS_ENSURE_STATE(mHTMLEditor);
mHTMLEditor->GetPriorHTMLSibling(curNode, address_of(sibling));
}
if (!curList || (sibling && sibling != curList) )
{
nsAutoString listTag;
nsEditor::GetTagString(curParent,listTag);
ToLowerCase(listTag);
// create a new nested list of correct type
res = SplitAsNeeded(&listTag, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
if (!curPositionedDiv) {
int32_t parentOffset;
nsCOMPtr<nsIDOMNode> curParentParent = nsEditor::GetNodeLocation(curParent, &parentOffset);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(divType, curParentParent, parentOffset, getter_AddRefs(curPositionedDiv));
mNewBlock = curPositionedDiv;
}
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(listTag, curPositionedDiv, -1, getter_AddRefs(curList));
NS_ENSURE_SUCCESS(res, res);
}
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(listitem, curList, -1);
NS_ENSURE_SUCCESS(res, res);
// remember we indented this li
indentedLI = listitem;
}
else
{
// need to make a div to put things in if we haven't already
if (!curPositionedDiv)
{
if (nsHTMLEditUtils::IsDiv(curNode))
{
curPositionedDiv = curNode;
mNewBlock = curPositionedDiv;
curList = nullptr;
continue;
}
res = SplitAsNeeded(&divType, address_of(curParent), &offset);
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->CreateNode(divType, curParent, offset, getter_AddRefs(curPositionedDiv));
NS_ENSURE_SUCCESS(res, res);
// remember our new block for postprocessing
mNewBlock = curPositionedDiv;
// curPositionedDiv is now the correct thing to put curNode in
}
// tuck the node into the end of the active blockquote
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->MoveNode(curNode, curPositionedDiv, -1);
NS_ENSURE_SUCCESS(res, res);
// forget curList, if any
curList = nullptr;
}
}
}
return res;
}
nsresult
nsHTMLEditRules::DidAbsolutePosition()
{
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIHTMLAbsPosEditor> absPosHTMLEditor = mHTMLEditor;
nsCOMPtr<nsIDOMElement> elt = do_QueryInterface(mNewBlock);
return absPosHTMLEditor->AbsolutelyPositionElement(elt, true);
}
nsresult
nsHTMLEditRules::WillRemoveAbsolutePosition(Selection* aSelection,
bool* aCancel, bool* aHandled) {
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
nsresult res = WillInsert(aSelection, aCancel);
NS_ENSURE_SUCCESS(res, res);
// initialize out param
// we want to ignore aCancel from WillInsert()
*aCancel = false;
*aHandled = true;
nsCOMPtr<nsIDOMElement> elt;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetAbsolutelyPositionedSelectionContainer(getter_AddRefs(elt));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
nsAutoSelectionReset selectionResetter(aSelection, mHTMLEditor);
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIHTMLAbsPosEditor> absPosHTMLEditor = mHTMLEditor;
return absPosHTMLEditor->AbsolutelyPositionElement(elt, false);
}
nsresult
nsHTMLEditRules::WillRelativeChangeZIndex(Selection* aSelection,
int32_t aChange,
bool *aCancel,
bool * aHandled)
{
if (!aSelection || !aCancel || !aHandled) { return NS_ERROR_NULL_POINTER; }
nsresult res = WillInsert(aSelection, aCancel);
NS_ENSURE_SUCCESS(res, res);
// initialize out param
// we want to ignore aCancel from WillInsert()
*aCancel = false;
*aHandled = true;
nsCOMPtr<nsIDOMElement> elt;
NS_ENSURE_STATE(mHTMLEditor);
res = mHTMLEditor->GetAbsolutelyPositionedSelectionContainer(getter_AddRefs(elt));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_STATE(mHTMLEditor);
nsAutoSelectionReset selectionResetter(aSelection, mHTMLEditor);
NS_ENSURE_STATE(mHTMLEditor);
nsCOMPtr<nsIHTMLAbsPosEditor> absPosHTMLEditor = mHTMLEditor;
int32_t zIndex;
return absPosHTMLEditor->RelativeChangeElementZIndex(elt, aChange, &zIndex);
}
NS_IMETHODIMP
nsHTMLEditRules::DocumentModified()
{
nsContentUtils::AddScriptRunner(NS_NewRunnableMethod(this, &nsHTMLEditRules::DocumentModifiedWorker));
return NS_OK;
}
void
nsHTMLEditRules::DocumentModifiedWorker()
{
if (!mHTMLEditor) {
return;
}
// DeleteNode below may cause a flush, which could destroy the editor
nsAutoScriptBlockerSuppressNodeRemoved scriptBlocker;
nsCOMPtr<nsIHTMLEditor> kungFuDeathGrip(mHTMLEditor);
nsCOMPtr<nsISelection> selection;
nsresult rv = mHTMLEditor->GetSelection(getter_AddRefs(selection));
if (NS_FAILED(rv)) {
return;
}
// Delete our bogus node, if we have one, since the document might not be
// empty any more.
if (mBogusNode) {
mEditor->DeleteNode(mBogusNode);
mBogusNode = nullptr;
}
// Try to recreate the bogus node if needed.
CreateBogusNodeIfNeeded(selection);
}
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