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98a833407e
TextEditor::DeleteSelectionAsAction() is called even if it's a part of edit action. For example, it's called to prepare for inserting text. For bug 1465702, editor itself and edit rules classes should not call public DeleteSelectionAsAction() directly. Therefore, this patch creates DeleteSelectionAsSubAction() for internal use. Note that this patch adds NS_ASSERTION() to detect wrong caller. However, it cannot distinguish if the call is valid, for example, it's allowed to call DeleteSelectionAsSelection() even if it's handling an edit action but the method is called via mutation event listener. So, we need to allow some assertions with some tests. But unfortunately, 1405747.html uses mutation event listener too many times (about 1,000 times) and the number of assertion isn't stable. Therefore, this patch makes the test stop using the mutation event listener 2nd time since I can reproduce the crash with ESR 52 at the 2nd time. MozReview-Commit-ID: 1TWaypmnoCC --HG-- extra : rebase_source : a6a4fb1cbcaf2ab6f10c5f3e7168a6bc0fcb02ed
2140 lines
63 KiB
C++
2140 lines
63 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/TextEditor.h"
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#include "EditAggregateTransaction.h"
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#include "HTMLEditRules.h"
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#include "InternetCiter.h"
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#include "TextEditUtils.h"
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#include "gfxFontUtils.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/EditAction.h"
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#include "mozilla/EditorDOMPoint.h"
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#include "mozilla/EditorUtils.h"
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#include "mozilla/HTMLEditor.h"
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#include "mozilla/IMEStateManager.h"
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#include "mozilla/mozalloc.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/TextEditRules.h"
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#include "mozilla/TextComposition.h"
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#include "mozilla/TextEvents.h"
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#include "mozilla/TextServicesDocument.h"
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#include "mozilla/dom/Selection.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/dom/Element.h"
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#include "nsAString.h"
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#include "nsCRT.h"
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#include "nsCaret.h"
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#include "nsCharTraits.h"
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#include "nsComponentManagerUtils.h"
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#include "nsContentCID.h"
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#include "nsContentList.h"
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#include "nsCopySupport.h"
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#include "nsDebug.h"
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#include "nsDependentSubstring.h"
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#include "nsError.h"
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#include "nsGkAtoms.h"
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#include "nsIAbsorbingTransaction.h"
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#include "nsIClipboard.h"
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#include "nsIContent.h"
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#include "nsIContentIterator.h"
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#include "nsIDocumentEncoder.h"
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#include "nsINode.h"
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#include "nsIPresShell.h"
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#include "nsISelectionController.h"
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#include "nsISupportsPrimitives.h"
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#include "nsITransferable.h"
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#include "nsIWeakReferenceUtils.h"
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#include "nsNameSpaceManager.h"
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#include "nsLiteralString.h"
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#include "nsReadableUtils.h"
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#include "nsServiceManagerUtils.h"
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#include "nsString.h"
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#include "nsStringFwd.h"
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#include "nsTextNode.h"
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#include "nsUnicharUtils.h"
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#include "nsXPCOM.h"
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class nsIOutputStream;
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class nsISupports;
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namespace mozilla {
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using namespace dom;
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template already_AddRefed<Element>
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TextEditor::InsertBrElementWithTransaction(
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Selection& aSelection,
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const EditorDOMPoint& aPointToInsert,
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EDirection aSelect);
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template already_AddRefed<Element>
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TextEditor::InsertBrElementWithTransaction(
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Selection& aSelection,
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const EditorRawDOMPoint& aPointToInsert,
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EDirection aSelect);
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TextEditor::TextEditor()
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: mWrapColumn(0)
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, mMaxTextLength(-1)
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, mInitTriggerCounter(0)
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, mNewlineHandling(nsIPlaintextEditor::eNewlinesPasteToFirst)
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#ifdef XP_WIN
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, mCaretStyle(1)
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#else
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, mCaretStyle(0)
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#endif
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{
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// check the "single line editor newline handling"
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// and "caret behaviour in selection" prefs
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GetDefaultEditorPrefs(mNewlineHandling, mCaretStyle);
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}
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TextEditor::~TextEditor()
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{
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// Remove event listeners. Note that if we had an HTML editor,
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// it installed its own instead of these
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RemoveEventListeners();
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if (mRules)
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mRules->DetachEditor();
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(TextEditor)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(TextEditor, EditorBase)
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if (tmp->mRules)
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tmp->mRules->DetachEditor();
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mRules)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mCachedDocumentEncoder)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(TextEditor, EditorBase)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRules)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCachedDocumentEncoder)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_ADDREF_INHERITED(TextEditor, EditorBase)
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NS_IMPL_RELEASE_INHERITED(TextEditor, EditorBase)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TextEditor)
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NS_INTERFACE_MAP_ENTRY(nsIPlaintextEditor)
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NS_INTERFACE_MAP_ENTRY(nsIEditorMailSupport)
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NS_INTERFACE_MAP_END_INHERITING(EditorBase)
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nsresult
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TextEditor::Init(nsIDocument& aDoc,
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Element* aRoot,
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nsISelectionController* aSelCon,
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uint32_t aFlags,
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const nsAString& aInitialValue)
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{
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if (mRules) {
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mRules->DetachEditor();
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}
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nsresult rulesRv = NS_OK;
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{
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// block to scope AutoEditInitRulesTrigger
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AutoEditInitRulesTrigger rulesTrigger(this, rulesRv);
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// Init the base editor
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nsresult rv = EditorBase::Init(aDoc, aRoot, aSelCon, aFlags, aInitialValue);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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}
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NS_ENSURE_SUCCESS(rulesRv, rulesRv);
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// mRules may not have been initialized yet, when this is called via
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// HTMLEditor::Init.
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if (mRules) {
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mRules->SetInitialValue(aInitialValue);
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}
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return NS_OK;
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}
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static int32_t sNewlineHandlingPref = -1,
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sCaretStylePref = -1;
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static void
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EditorPrefsChangedCallback(const char* aPrefName, void *)
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{
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if (!nsCRT::strcmp(aPrefName, "editor.singleLine.pasteNewlines")) {
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sNewlineHandlingPref =
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Preferences::GetInt("editor.singleLine.pasteNewlines",
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nsIPlaintextEditor::eNewlinesPasteToFirst);
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} else if (!nsCRT::strcmp(aPrefName, "layout.selection.caret_style")) {
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sCaretStylePref = Preferences::GetInt("layout.selection.caret_style",
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#ifdef XP_WIN
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1);
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if (!sCaretStylePref) {
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sCaretStylePref = 1;
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}
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#else
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0);
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#endif
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}
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}
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// static
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void
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TextEditor::GetDefaultEditorPrefs(int32_t& aNewlineHandling,
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int32_t& aCaretStyle)
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{
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if (sNewlineHandlingPref == -1) {
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Preferences::RegisterCallbackAndCall(EditorPrefsChangedCallback,
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"editor.singleLine.pasteNewlines");
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Preferences::RegisterCallbackAndCall(EditorPrefsChangedCallback,
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"layout.selection.caret_style");
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}
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aNewlineHandling = sNewlineHandlingPref;
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aCaretStyle = sCaretStylePref;
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}
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void
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TextEditor::BeginEditorInit()
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{
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mInitTriggerCounter++;
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}
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nsresult
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TextEditor::EndEditorInit()
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{
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MOZ_ASSERT(mInitTriggerCounter > 0, "ended editor init before we began?");
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mInitTriggerCounter--;
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if (mInitTriggerCounter) {
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return NS_OK;
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}
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nsresult rv = InitRules();
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if (NS_FAILED(rv)) {
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return rv;
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}
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// Throw away the old transaction manager if this is not the first time that
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// we're initializing the editor.
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ClearUndoRedo();
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EnableUndoRedo();
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return NS_OK;
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}
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NS_IMETHODIMP
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TextEditor::SetDocumentCharacterSet(const nsACString& characterSet)
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{
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nsresult rv = EditorBase::SetDocumentCharacterSet(characterSet);
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NS_ENSURE_SUCCESS(rv, rv);
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// Update META charset element.
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nsCOMPtr<nsIDocument> doc = GetDocument();
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if (NS_WARN_IF(!doc)) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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if (UpdateMetaCharset(*doc, characterSet)) {
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return NS_OK;
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}
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RefPtr<nsContentList> headList =
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doc->GetElementsByTagName(NS_LITERAL_STRING("head"));
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if (NS_WARN_IF(!headList)) {
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return NS_OK;
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}
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nsCOMPtr<nsIContent> headNode = headList->Item(0);
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if (NS_WARN_IF(!headNode)) {
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return NS_OK;
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}
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// Create a new meta charset tag
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EditorRawDOMPoint atStartOfHeadNode(headNode, 0);
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RefPtr<Element> metaElement =
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CreateNodeWithTransaction(*nsGkAtoms::meta, atStartOfHeadNode);
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if (NS_WARN_IF(!metaElement)) {
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return NS_OK;
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}
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// Set attributes to the created element
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if (characterSet.IsEmpty()) {
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return NS_OK;
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}
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// not undoable, undo should undo CreateNodeWithTransaction().
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metaElement->SetAttr(kNameSpaceID_None, nsGkAtoms::httpEquiv,
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NS_LITERAL_STRING("Content-Type"), true);
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metaElement->SetAttr(kNameSpaceID_None, nsGkAtoms::content,
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NS_LITERAL_STRING("text/html;charset=") +
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NS_ConvertASCIItoUTF16(characterSet),
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true);
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return NS_OK;
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}
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bool
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TextEditor::UpdateMetaCharset(nsIDocument& aDocument,
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const nsACString& aCharacterSet)
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{
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// get a list of META tags
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RefPtr<nsContentList> metaList =
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aDocument.GetElementsByTagName(NS_LITERAL_STRING("meta"));
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if (NS_WARN_IF(!metaList)) {
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return false;
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}
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for (uint32_t i = 0; i < metaList->Length(true); ++i) {
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nsCOMPtr<nsIContent> metaNode = metaList->Item(i);
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MOZ_ASSERT(metaNode);
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if (!metaNode->IsElement()) {
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continue;
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}
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nsAutoString currentValue;
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metaNode->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::httpEquiv,
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currentValue);
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if (!FindInReadable(NS_LITERAL_STRING("content-type"),
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currentValue,
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nsCaseInsensitiveStringComparator())) {
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continue;
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}
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metaNode->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::content,
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currentValue);
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NS_NAMED_LITERAL_STRING(charsetEquals, "charset=");
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nsAString::const_iterator originalStart, start, end;
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originalStart = currentValue.BeginReading(start);
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currentValue.EndReading(end);
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if (!FindInReadable(charsetEquals, start, end,
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nsCaseInsensitiveStringComparator())) {
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continue;
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}
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// set attribute to <original prefix> charset=text/html
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RefPtr<Element> metaElement = metaNode->AsElement();
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MOZ_ASSERT(metaElement);
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nsresult rv =
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SetAttributeWithTransaction(*metaElement, *nsGkAtoms::content,
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Substring(originalStart, start) +
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charsetEquals +
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NS_ConvertASCIItoUTF16(aCharacterSet));
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return NS_SUCCEEDED(rv);
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}
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return false;
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}
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nsresult
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TextEditor::InitRules()
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{
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if (!mRules) {
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// instantiate the rules for this text editor
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mRules = new TextEditRules();
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}
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return mRules->Init(this);
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}
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nsresult
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TextEditor::HandleKeyPressEvent(WidgetKeyboardEvent* aKeyboardEvent)
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{
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// NOTE: When you change this method, you should also change:
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// * editor/libeditor/tests/test_texteditor_keyevent_handling.html
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// * editor/libeditor/tests/test_htmleditor_keyevent_handling.html
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//
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// And also when you add new key handling, you need to change the subclass's
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// HandleKeyPressEvent()'s switch statement.
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if (IsReadonly() || IsDisabled()) {
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// When we're not editable, the events handled on EditorBase.
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return EditorBase::HandleKeyPressEvent(aKeyboardEvent);
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}
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if (NS_WARN_IF(!aKeyboardEvent)) {
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return NS_ERROR_UNEXPECTED;
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}
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MOZ_ASSERT(aKeyboardEvent->mMessage == eKeyPress,
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"HandleKeyPressEvent gets non-keypress event");
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switch (aKeyboardEvent->mKeyCode) {
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case NS_VK_META:
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case NS_VK_WIN:
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case NS_VK_SHIFT:
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case NS_VK_CONTROL:
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case NS_VK_ALT:
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// These keys are handled on EditorBase
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return EditorBase::HandleKeyPressEvent(aKeyboardEvent);
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case NS_VK_BACK:
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if (aKeyboardEvent->IsControl() || aKeyboardEvent->IsAlt() ||
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aKeyboardEvent->IsMeta() || aKeyboardEvent->IsOS()) {
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return NS_OK;
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}
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DeleteSelectionAsAction(nsIEditor::ePrevious, nsIEditor::eStrip);
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aKeyboardEvent->PreventDefault(); // consumed
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return NS_OK;
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case NS_VK_DELETE:
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// on certain platforms (such as windows) the shift key
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// modifies what delete does (cmd_cut in this case).
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// bailing here to allow the keybindings to do the cut.
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if (aKeyboardEvent->IsShift() || aKeyboardEvent->IsControl() ||
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aKeyboardEvent->IsAlt() || aKeyboardEvent->IsMeta() ||
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aKeyboardEvent->IsOS()) {
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return NS_OK;
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}
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DeleteSelectionAsAction(nsIEditor::eNext, nsIEditor::eStrip);
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aKeyboardEvent->PreventDefault(); // consumed
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return NS_OK;
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case NS_VK_TAB: {
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if (IsTabbable()) {
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return NS_OK; // let it be used for focus switching
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}
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if (aKeyboardEvent->IsShift() || aKeyboardEvent->IsControl() ||
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aKeyboardEvent->IsAlt() || aKeyboardEvent->IsMeta() ||
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aKeyboardEvent->IsOS()) {
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return NS_OK;
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}
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// else we insert the tab straight through
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aKeyboardEvent->PreventDefault();
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return OnInputText(NS_LITERAL_STRING("\t"));
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}
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case NS_VK_RETURN:
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if (IsSingleLineEditor() || !aKeyboardEvent->IsInputtingLineBreak()) {
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return NS_OK;
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}
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aKeyboardEvent->PreventDefault();
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return OnInputParagraphSeparator();
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}
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if (!aKeyboardEvent->IsInputtingText()) {
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// we don't PreventDefault() here or keybindings like control-x won't work
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return NS_OK;
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}
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aKeyboardEvent->PreventDefault();
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nsAutoString str(aKeyboardEvent->mCharCode);
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return OnInputText(str);
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}
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nsresult
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TextEditor::OnInputText(const nsAString& aStringToInsert)
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{
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AutoPlaceholderBatch batch(this, nsGkAtoms::TypingTxnName);
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nsresult rv = InsertTextAsAction(aStringToInsert);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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return NS_OK;
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}
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nsresult
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TextEditor::OnInputParagraphSeparator()
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{
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AutoPlaceholderBatch batch(this, nsGkAtoms::TypingTxnName);
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nsresult rv = InsertParagraphSeparatorAsAction();
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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return NS_OK;
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}
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template<typename PT, typename CT>
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already_AddRefed<Element>
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TextEditor::InsertBrElementWithTransaction(
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Selection& aSelection,
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const EditorDOMPointBase<PT, CT>& aPointToInsert,
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EDirection aSelect /* = eNone */)
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{
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if (NS_WARN_IF(!aPointToInsert.IsSet())) {
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return nullptr;
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}
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// We need to insert a <br> node.
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RefPtr<Element> newBRElement;
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if (aPointToInsert.IsInTextNode()) {
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EditorDOMPoint pointInContainer;
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if (aPointToInsert.IsStartOfContainer()) {
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// Insert before the text node.
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pointInContainer.Set(aPointToInsert.GetContainer());
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if (NS_WARN_IF(!pointInContainer.IsSet())) {
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return nullptr;
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}
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} else if (aPointToInsert.IsEndOfContainer()) {
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// Insert after the text node.
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pointInContainer.Set(aPointToInsert.GetContainer());
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if (NS_WARN_IF(!pointInContainer.IsSet())) {
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return nullptr;
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}
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DebugOnly<bool> advanced = pointInContainer.AdvanceOffset();
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NS_WARNING_ASSERTION(advanced,
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"Failed to advance offset to after the text node");
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} else {
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MOZ_DIAGNOSTIC_ASSERT(aPointToInsert.IsSetAndValid());
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// Unfortunately, we need to split the text node at the offset.
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ErrorResult error;
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nsCOMPtr<nsIContent> newLeftNode =
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SplitNodeWithTransaction(aPointToInsert, error);
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if (NS_WARN_IF(error.Failed())) {
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error.SuppressException();
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return nullptr;
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}
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Unused << newLeftNode;
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// Insert new <br> before the right node.
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pointInContainer.Set(aPointToInsert.GetContainer());
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}
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// Create a <br> node.
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newBRElement = CreateNodeWithTransaction(*nsGkAtoms::br, pointInContainer);
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if (NS_WARN_IF(!newBRElement)) {
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return nullptr;
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}
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} else {
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newBRElement = CreateNodeWithTransaction(*nsGkAtoms::br, aPointToInsert);
|
|
if (NS_WARN_IF(!newBRElement)) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
switch (aSelect) {
|
|
case eNone:
|
|
break;
|
|
case eNext: {
|
|
aSelection.SetInterlinePosition(true, IgnoreErrors());
|
|
// Collapse selection after the <br> node.
|
|
EditorRawDOMPoint afterBRElement(newBRElement);
|
|
if (afterBRElement.IsSet()) {
|
|
DebugOnly<bool> advanced = afterBRElement.AdvanceOffset();
|
|
NS_WARNING_ASSERTION(advanced,
|
|
"Failed to advance offset after the <br> element");
|
|
ErrorResult error;
|
|
aSelection.Collapse(afterBRElement, error);
|
|
NS_WARNING_ASSERTION(!error.Failed(),
|
|
"Failed to collapse selection after the <br> element");
|
|
} else {
|
|
NS_WARNING("The <br> node is not in the DOM tree?");
|
|
}
|
|
break;
|
|
}
|
|
case ePrevious: {
|
|
aSelection.SetInterlinePosition(true, IgnoreErrors());
|
|
// Collapse selection at the <br> node.
|
|
EditorRawDOMPoint atBRElement(newBRElement);
|
|
if (atBRElement.IsSet()) {
|
|
ErrorResult error;
|
|
aSelection.Collapse(atBRElement, error);
|
|
NS_WARNING_ASSERTION(!error.Failed(),
|
|
"Failed to collapse selection at the <br> element");
|
|
} else {
|
|
NS_WARNING("The <br> node is not in the DOM tree?");
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
NS_WARNING("aSelect has invalid value, the caller need to set selection "
|
|
"by itself");
|
|
break;
|
|
}
|
|
|
|
return newBRElement.forget();
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::ExtendSelectionForDelete(Selection* aSelection,
|
|
nsIEditor::EDirection* aAction)
|
|
{
|
|
bool bCollapsed = aSelection->IsCollapsed();
|
|
|
|
if (*aAction == eNextWord ||
|
|
*aAction == ePreviousWord ||
|
|
(*aAction == eNext && bCollapsed) ||
|
|
(*aAction == ePrevious && bCollapsed) ||
|
|
*aAction == eToBeginningOfLine ||
|
|
*aAction == eToEndOfLine) {
|
|
nsCOMPtr<nsISelectionController> selCont;
|
|
GetSelectionController(getter_AddRefs(selCont));
|
|
NS_ENSURE_TRUE(selCont, NS_ERROR_NO_INTERFACE);
|
|
|
|
switch (*aAction) {
|
|
case eNextWord: {
|
|
nsresult rv = selCont->WordExtendForDelete(true);
|
|
// DeleteSelectionWithTransaction() doesn't handle these actions
|
|
// because it's inside batching, so don't confuse it:
|
|
*aAction = eNone;
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
case ePreviousWord: {
|
|
nsresult rv = selCont->WordExtendForDelete(false);
|
|
*aAction = eNone;
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
case eNext: {
|
|
nsresult rv = selCont->CharacterExtendForDelete();
|
|
// Don't set aAction to eNone (see Bug 502259)
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
case ePrevious: {
|
|
// Only extend the selection where the selection is after a UTF-16
|
|
// surrogate pair or a variation selector.
|
|
// For other cases we don't want to do that, in order
|
|
// to make sure that pressing backspace will only delete the last
|
|
// typed character.
|
|
EditorRawDOMPoint atStartOfSelection =
|
|
EditorBase::GetStartPoint(aSelection);
|
|
if (NS_WARN_IF(!atStartOfSelection.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// node might be anonymous DIV, so we find better text node
|
|
EditorRawDOMPoint insertionPoint =
|
|
FindBetterInsertionPoint(atStartOfSelection);
|
|
|
|
if (insertionPoint.IsInTextNode()) {
|
|
const nsTextFragment* data =
|
|
insertionPoint.GetContainerAsText()->GetText();
|
|
uint32_t offset = insertionPoint.Offset();
|
|
if ((offset > 1 &&
|
|
NS_IS_LOW_SURROGATE(data->CharAt(offset - 1)) &&
|
|
NS_IS_HIGH_SURROGATE(data->CharAt(offset - 2))) ||
|
|
(offset > 0 &&
|
|
gfxFontUtils::IsVarSelector(data->CharAt(offset - 1)))) {
|
|
nsresult rv = selCont->CharacterExtendForBackspace();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
case eToBeginningOfLine: {
|
|
// Select to beginning
|
|
nsresult rv = selCont->IntraLineMove(false, true);
|
|
*aAction = eNone;
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
case eToEndOfLine: {
|
|
nsresult rv = selCont->IntraLineMove(true, true);
|
|
*aAction = eNext;
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
// For avoiding several compiler warnings
|
|
default:
|
|
return NS_OK;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::DeleteSelection(EDirection aAction,
|
|
EStripWrappers aStripWrappers)
|
|
{
|
|
nsresult rv = DeleteSelectionAsAction(aAction, aStripWrappers);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::DeleteSelectionAsAction(EDirection aDirection,
|
|
EStripWrappers aStripWrappers)
|
|
{
|
|
MOZ_ASSERT(aStripWrappers == eStrip || aStripWrappers == eNoStrip);
|
|
// Showing this assertion is fine if this method is called by outside via
|
|
// mutation event listener or something. Otherwise, this is called by
|
|
// wrong method.
|
|
NS_ASSERTION(!mPlaceholderBatch,
|
|
"Should be called only when this is the only edit action of the operation "
|
|
"unless mutation event listener nests some operations");
|
|
|
|
// delete placeholder txns merge.
|
|
AutoPlaceholderBatch batch(this, nsGkAtoms::DeleteTxnName);
|
|
nsresult rv = DeleteSelectionAsSubAction(aDirection, aStripWrappers);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::DeleteSelectionAsSubAction(EDirection aDirection,
|
|
EStripWrappers aStripWrappers)
|
|
{
|
|
MOZ_ASSERT(aStripWrappers == eStrip || aStripWrappers == eNoStrip);
|
|
MOZ_ASSERT(mPlaceholderBatch);
|
|
|
|
if (!mRules) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
// Protect the edit rules object from dying
|
|
RefPtr<TextEditRules> rules(mRules);
|
|
|
|
// pre-process
|
|
RefPtr<Selection> selection = GetSelection();
|
|
if (NS_WARN_IF(!selection)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// If there is an existing selection when an extended delete is requested,
|
|
// platforms that use "caret-style" caret positioning collapse the
|
|
// selection to the start and then create a new selection.
|
|
// Platforms that use "selection-style" caret positioning just delete the
|
|
// existing selection without extending it.
|
|
if (!selection->IsCollapsed()) {
|
|
switch (aDirection) {
|
|
case eNextWord:
|
|
case ePreviousWord:
|
|
case eToBeginningOfLine:
|
|
case eToEndOfLine: {
|
|
if (mCaretStyle != 1) {
|
|
aDirection = eNone;
|
|
break;
|
|
}
|
|
ErrorResult error;
|
|
selection->CollapseToStart(error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
return error.StealNSResult();
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this,
|
|
EditSubAction::eDeleteSelectedContent,
|
|
aDirection);
|
|
EditSubActionInfo subActionInfo(EditSubAction::eDeleteSelectedContent);
|
|
subActionInfo.collapsedAction = aDirection;
|
|
subActionInfo.stripWrappers = aStripWrappers;
|
|
bool cancel, handled;
|
|
nsresult rv =
|
|
rules->WillDoAction(selection, subActionInfo, &cancel, &handled);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
if (!cancel && !handled) {
|
|
rv = DeleteSelectionWithTransaction(aDirection, aStripWrappers);
|
|
}
|
|
if (!cancel) {
|
|
// post-process
|
|
rv = rules->DidDoAction(selection, subActionInfo, rv);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::DeleteSelectionWithTransaction(EDirection aDirection,
|
|
EStripWrappers aStripWrappers)
|
|
{
|
|
MOZ_ASSERT(aStripWrappers == eStrip || aStripWrappers == eNoStrip);
|
|
|
|
RefPtr<Selection> selection = GetSelection();
|
|
if (NS_WARN_IF(!selection)) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
RefPtr<EditAggregateTransaction> deleteSelectionTransaction;
|
|
nsCOMPtr<nsINode> deleteNode;
|
|
int32_t deleteCharOffset = 0, deleteCharLength = 0;
|
|
if (!selection->IsCollapsed() || aDirection != eNone) {
|
|
deleteSelectionTransaction =
|
|
CreateTxnForDeleteSelection(aDirection,
|
|
getter_AddRefs(deleteNode),
|
|
&deleteCharOffset,
|
|
&deleteCharLength);
|
|
if (NS_WARN_IF(!deleteSelectionTransaction)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
RefPtr<CharacterData> deleteCharData =
|
|
CharacterData::FromNodeOrNull(deleteNode);
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this,
|
|
EditSubAction::eDeleteSelectedContent,
|
|
aDirection);
|
|
|
|
if (mRules && mRules->AsHTMLEditRules()) {
|
|
if (!deleteNode) {
|
|
RefPtr<HTMLEditRules> htmlEditRules = mRules->AsHTMLEditRules();
|
|
htmlEditRules->WillDeleteSelection(*selection);
|
|
} else if (!deleteCharData) {
|
|
RefPtr<HTMLEditRules> htmlEditRules = mRules->AsHTMLEditRules();
|
|
htmlEditRules->WillDeleteNode(*selection, *deleteNode);
|
|
}
|
|
}
|
|
|
|
// Notify nsIEditActionListener::WillDelete[Selection|Text]
|
|
if (!mActionListeners.IsEmpty()) {
|
|
if (!deleteNode) {
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
for (auto& listener : listeners) {
|
|
listener->WillDeleteSelection(selection);
|
|
}
|
|
} else if (deleteCharData) {
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
for (auto& listener : listeners) {
|
|
listener->WillDeleteText(deleteCharData, deleteCharOffset, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Delete the specified amount
|
|
nsresult rv = DoTransaction(deleteSelectionTransaction);
|
|
|
|
if (mRules && mRules->AsHTMLEditRules() && deleteCharData) {
|
|
MOZ_ASSERT(deleteNode);
|
|
RefPtr<HTMLEditRules> htmlEditRules = mRules->AsHTMLEditRules();
|
|
htmlEditRules->DidDeleteText(*selection, *deleteNode, deleteCharOffset, 1);
|
|
}
|
|
|
|
if (mTextServicesDocument && NS_SUCCEEDED(rv) &&
|
|
deleteNode && !deleteCharData) {
|
|
RefPtr<TextServicesDocument> textServicesDocument = mTextServicesDocument;
|
|
textServicesDocument->DidDeleteNode(deleteNode);
|
|
}
|
|
|
|
// Notify nsIEditActionListener::DidDelete[Selection|Text|Node]
|
|
{
|
|
AutoActionListenerArray listeners(mActionListeners);
|
|
if (!deleteNode) {
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidDeleteSelection(selection);
|
|
}
|
|
} else if (deleteCharData) {
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidDeleteText(deleteCharData, deleteCharOffset, 1, rv);
|
|
}
|
|
} else {
|
|
for (auto& listener : mActionListeners) {
|
|
listener->DidDeleteNode(deleteNode, rv);
|
|
}
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
already_AddRefed<Element>
|
|
TextEditor::DeleteSelectionAndCreateElement(nsAtom& aTag)
|
|
{
|
|
nsresult rv = DeleteSelectionAndPrepareToCreateNode();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<Selection> selection = GetSelection();
|
|
if (NS_WARN_IF(!selection)) {
|
|
return nullptr;
|
|
}
|
|
|
|
EditorRawDOMPoint pointToInsert(selection->AnchorRef());
|
|
if (!pointToInsert.IsSet()) {
|
|
return nullptr;
|
|
}
|
|
RefPtr<Element> newElement = CreateNodeWithTransaction(aTag, pointToInsert);
|
|
|
|
// We want the selection to be just after the new node
|
|
EditorRawDOMPoint afterNewElement(newElement);
|
|
MOZ_ASSERT(afterNewElement.IsSetAndValid());
|
|
DebugOnly<bool> advanced = afterNewElement.AdvanceOffset();
|
|
NS_WARNING_ASSERTION(advanced,
|
|
"Failed to move offset next to the new element");
|
|
ErrorResult error;
|
|
selection->Collapse(afterNewElement, error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
// XXX Even if it succeeded to create new element, this returns error
|
|
// when Selection.Collapse() fails something. This could occur with
|
|
// mutation observer or mutation event listener.
|
|
error.SuppressException();
|
|
return nullptr;
|
|
}
|
|
return newElement.forget();
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::DeleteSelectionAndPrepareToCreateNode()
|
|
{
|
|
RefPtr<Selection> selection = GetSelection();
|
|
if (NS_WARN_IF(!selection)) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
if (NS_WARN_IF(!selection->GetAnchorFocusRange())) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!selection->GetAnchorFocusRange()->Collapsed()) {
|
|
nsresult rv = DeleteSelectionAsSubAction(eNone, eStrip);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
MOZ_ASSERT(selection->GetAnchorFocusRange() &&
|
|
selection->GetAnchorFocusRange()->Collapsed(),
|
|
"Selection not collapsed after delete");
|
|
}
|
|
|
|
// If the selection is a chardata node, split it if necessary and compute
|
|
// where to put the new node
|
|
EditorDOMPoint atAnchor(selection->AnchorRef());
|
|
if (NS_WARN_IF(!atAnchor.IsSet()) || !atAnchor.IsInDataNode()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (NS_WARN_IF(!atAnchor.GetContainer()->GetParentNode())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (atAnchor.IsStartOfContainer()) {
|
|
EditorRawDOMPoint atAnchorContainer(atAnchor.GetContainer());
|
|
if (NS_WARN_IF(!atAnchorContainer.IsSetAndValid())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
ErrorResult error;
|
|
selection->Collapse(atAnchorContainer, error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
return error.StealNSResult();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
if (atAnchor.IsEndOfContainer()) {
|
|
EditorRawDOMPoint afterAnchorContainer(atAnchor.GetContainer());
|
|
if (NS_WARN_IF(!afterAnchorContainer.AdvanceOffset())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
ErrorResult error;
|
|
selection->Collapse(afterAnchorContainer, error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
return error.StealNSResult();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
ErrorResult error;
|
|
nsCOMPtr<nsIContent> newLeftNode = SplitNodeWithTransaction(atAnchor, error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
return error.StealNSResult();
|
|
}
|
|
|
|
EditorRawDOMPoint atRightNode(atAnchor.GetContainer());
|
|
if (NS_WARN_IF(!atRightNode.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
MOZ_ASSERT(atRightNode.IsSetAndValid());
|
|
selection->Collapse(atRightNode, error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
return error.StealNSResult();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::InsertText(const nsAString& aStringToInsert)
|
|
{
|
|
nsresult rv = InsertTextAsAction(aStringToInsert);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::InsertTextAsAction(const nsAString& aStringToInsert)
|
|
{
|
|
if (!mRules) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
// Protect the edit rules object from dying
|
|
RefPtr<TextEditRules> rules(mRules);
|
|
|
|
EditSubAction editSubAction = EditSubAction::eInsertText;
|
|
if (ShouldHandleIMEComposition()) {
|
|
// So, the string must come from IME as new composition string or
|
|
// commit string.
|
|
editSubAction = EditSubAction::eInsertTextComingFromIME;
|
|
}
|
|
|
|
AutoPlaceholderBatch batch(this, nullptr);
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this, editSubAction, nsIEditor::eNext);
|
|
|
|
RefPtr<Selection> selection = GetSelection();
|
|
if (NS_WARN_IF(!selection)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsAutoString resultString;
|
|
// XXX can we trust instring to outlive subActionInfo,
|
|
// XXX and subActionInfo not to refer to instring in its dtor?
|
|
//nsAutoString instring(aStringToInsert);
|
|
EditSubActionInfo subActionInfo(editSubAction);
|
|
subActionInfo.inString = &aStringToInsert;
|
|
subActionInfo.outString = &resultString;
|
|
subActionInfo.maxLength = mMaxTextLength;
|
|
|
|
bool cancel, handled;
|
|
nsresult rv =
|
|
rules->WillDoAction(selection, subActionInfo, &cancel, &handled);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
if (!cancel && !handled) {
|
|
// we rely on rules code for now - no default implementation
|
|
}
|
|
if (cancel) {
|
|
return NS_OK;
|
|
}
|
|
// post-process
|
|
return rules->DidDoAction(selection, subActionInfo, NS_OK);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::InsertLineBreak()
|
|
{
|
|
return InsertParagraphSeparatorAsAction();
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::InsertParagraphSeparatorAsAction()
|
|
{
|
|
if (!mRules) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
// Protect the edit rules object from dying
|
|
RefPtr<TextEditRules> rules(mRules);
|
|
|
|
AutoPlaceholderBatch beginBatching(this);
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this,
|
|
EditSubAction::eInsertParagraphSeparator,
|
|
nsIEditor::eNext);
|
|
|
|
RefPtr<Selection> selection = GetSelection();
|
|
if (NS_WARN_IF(!selection)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
EditSubActionInfo subActionInfo(EditSubAction::eInsertParagraphSeparator);
|
|
subActionInfo.maxLength = mMaxTextLength;
|
|
bool cancel, handled;
|
|
nsresult rv = rules->WillDoAction(selection, subActionInfo, &cancel, &handled);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
// XXX DidDoAction() won't be called when WillDoAction() returns error.
|
|
// Perhaps, we should move the code between WillDoAction() and
|
|
// DidDoAction() to a new method and guarantee that DidDoAction() is
|
|
// always called after WillDoAction().
|
|
return rv;
|
|
}
|
|
|
|
if (!cancel && !handled) {
|
|
// get the (collapsed) selection location
|
|
nsRange* firstRange = selection->GetRangeAt(0);
|
|
if (NS_WARN_IF(!firstRange)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
EditorRawDOMPoint pointToInsert(firstRange->StartRef());
|
|
if (NS_WARN_IF(!pointToInsert.IsSet())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
MOZ_ASSERT(pointToInsert.IsSetAndValid());
|
|
|
|
// don't put text in places that can't have it
|
|
if (!pointToInsert.IsInTextNode() &&
|
|
!CanContainTag(*pointToInsert.GetContainer(),
|
|
*nsGkAtoms::textTagName)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// we need to get the doc
|
|
nsCOMPtr<nsIDocument> doc = GetDocument();
|
|
if (NS_WARN_IF(!doc)) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
// don't change my selection in subtransactions
|
|
AutoTransactionsConserveSelection dontChangeMySelection(this);
|
|
|
|
// insert a linefeed character
|
|
EditorRawDOMPoint pointAfterInsertedLineBreak;
|
|
rv = InsertTextWithTransaction(*doc, NS_LITERAL_STRING("\n"), pointToInsert,
|
|
&pointAfterInsertedLineBreak);
|
|
if (NS_WARN_IF(!pointAfterInsertedLineBreak.IsSet())) {
|
|
rv = NS_ERROR_NULL_POINTER; // don't return here, so DidDoAction is called
|
|
}
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// set the selection to the correct location
|
|
MOZ_ASSERT(!pointAfterInsertedLineBreak.GetChild(),
|
|
"After inserting text into a text node, pointAfterInsertedLineBreak."
|
|
"GetChild() should be nullptr");
|
|
rv = selection->Collapse(pointAfterInsertedLineBreak);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// see if we're at the end of the editor range
|
|
EditorRawDOMPoint endPoint = GetEndPoint(selection);
|
|
if (endPoint == pointAfterInsertedLineBreak) {
|
|
// 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.
|
|
selection->SetInterlinePosition(true, IgnoreErrors());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!cancel) {
|
|
// post-process, always called if WillInsertBreak didn't return cancel==true
|
|
rv = rules->DidDoAction(selection, subActionInfo, rv);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::SetText(const nsAString& aString)
|
|
{
|
|
if (NS_WARN_IF(!mRules)) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
// Protect the edit rules object from dying
|
|
RefPtr<TextEditRules> rules(mRules);
|
|
|
|
// delete placeholder txns merge.
|
|
AutoPlaceholderBatch batch(this, nullptr);
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this, EditSubAction::eSetText,
|
|
nsIEditor::eNext);
|
|
|
|
// pre-process
|
|
RefPtr<Selection> selection = GetSelection();
|
|
if (NS_WARN_IF(!selection)) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
EditSubActionInfo subActionInfo(EditSubAction::eSetText);
|
|
subActionInfo.inString = &aString;
|
|
subActionInfo.maxLength = mMaxTextLength;
|
|
|
|
bool cancel;
|
|
bool handled;
|
|
nsresult rv =
|
|
rules->WillDoAction(selection, subActionInfo, &cancel, &handled);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
if (cancel) {
|
|
return NS_OK;
|
|
}
|
|
if (!handled) {
|
|
// We want to select trailing BR node to remove all nodes to replace all,
|
|
// but TextEditor::SelectEntireDocument doesn't select that BR node.
|
|
if (rules->DocumentIsEmpty()) {
|
|
// if it's empty, don't select entire doc - that would select
|
|
// the bogus node
|
|
Element* rootElement = GetRoot();
|
|
if (NS_WARN_IF(!rootElement)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
rv = selection->Collapse(rootElement, 0);
|
|
} else {
|
|
rv = EditorBase::SelectEntireDocument(selection);
|
|
}
|
|
if (NS_SUCCEEDED(rv)) {
|
|
if (aString.IsEmpty()) {
|
|
rv = DeleteSelectionAsSubAction(eNone, eStrip);
|
|
NS_WARNING_ASSERTION(NS_FAILED(rv), "Failed to remove all text");
|
|
} else {
|
|
rv = InsertTextAsAction(aString);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to insert the new text");
|
|
}
|
|
}
|
|
}
|
|
// post-process
|
|
return rules->DidDoAction(selection, subActionInfo, rv);
|
|
}
|
|
|
|
bool
|
|
TextEditor::EnsureComposition(WidgetCompositionEvent& aCompositionEvent)
|
|
{
|
|
if (mComposition) {
|
|
return true;
|
|
}
|
|
// The compositionstart event must cause creating new TextComposition
|
|
// instance at being dispatched by IMEStateManager.
|
|
mComposition = IMEStateManager::GetTextCompositionFor(&aCompositionEvent);
|
|
if (!mComposition) {
|
|
// However, TextComposition may be committed before the composition
|
|
// event comes here.
|
|
return false;
|
|
}
|
|
mComposition->StartHandlingComposition(this);
|
|
return true;
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::OnCompositionStart(WidgetCompositionEvent& aCompositionStartEvent)
|
|
{
|
|
if (NS_WARN_IF(mComposition)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (IsPasswordEditor()) {
|
|
if (NS_WARN_IF(!mRules)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// Protect the edit rules object from dying
|
|
RefPtr<TextEditRules> rules(mRules);
|
|
rules->ResetIMETextPWBuf();
|
|
}
|
|
|
|
EnsureComposition(aCompositionStartEvent);
|
|
NS_WARNING_ASSERTION(mComposition, "Failed to get TextComposition instance?");
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::OnCompositionChange(WidgetCompositionEvent& aCompsitionChangeEvent)
|
|
{
|
|
MOZ_ASSERT(aCompsitionChangeEvent.mMessage == eCompositionChange,
|
|
"The event should be eCompositionChange");
|
|
|
|
if (!EnsureComposition(aCompsitionChangeEvent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIPresShell* presShell = GetPresShell();
|
|
if (NS_WARN_IF(!presShell)) {
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
RefPtr<Selection> selection = GetSelection();
|
|
if (NS_WARN_IF(!selection)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// NOTE: TextComposition should receive selection change notification before
|
|
// CompositionChangeEventHandlingMarker notifies TextComposition of the
|
|
// end of handling compositionchange event because TextComposition may
|
|
// need to ignore selection changes caused by composition. Therefore,
|
|
// CompositionChangeEventHandlingMarker must be destroyed after a call
|
|
// of NotifiyEditorObservers(eNotifyEditorObserversOfEnd) or
|
|
// NotifiyEditorObservers(eNotifyEditorObserversOfCancel) which notifies
|
|
// TextComposition of a selection change.
|
|
MOZ_ASSERT(!mPlaceholderBatch,
|
|
"UpdateIMEComposition() must be called without place holder batch");
|
|
TextComposition::CompositionChangeEventHandlingMarker
|
|
compositionChangeEventHandlingMarker(mComposition, &aCompsitionChangeEvent);
|
|
|
|
RefPtr<nsCaret> caretP = presShell->GetCaret();
|
|
|
|
nsresult rv;
|
|
{
|
|
AutoPlaceholderBatch batch(this, nsGkAtoms::IMETxnName);
|
|
|
|
MOZ_ASSERT(mIsInEditSubAction,
|
|
"AutoPlaceholderBatch should've notified the observes of before-edit");
|
|
rv = InsertTextAsAction(aCompsitionChangeEvent.mData);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"Failed to insert new composition string");
|
|
|
|
if (caretP) {
|
|
caretP->SetSelection(selection);
|
|
}
|
|
}
|
|
|
|
// If still composing, we should fire input event via observer.
|
|
// Note that if the composition will be committed by the following
|
|
// compositionend event, we don't need to notify editor observes of this
|
|
// change.
|
|
// NOTE: We must notify after the auto batch will be gone.
|
|
if (!aCompsitionChangeEvent.IsFollowedByCompositionEnd()) {
|
|
NotifyEditorObservers(eNotifyEditorObserversOfEnd);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
TextEditor::OnCompositionEnd(WidgetCompositionEvent& aCompositionEndEvent)
|
|
{
|
|
if (NS_WARN_IF(!mComposition)) {
|
|
return;
|
|
}
|
|
|
|
// commit the IME transaction..we can get at it via the transaction mgr.
|
|
// Note that this means IME won't work without an undo stack!
|
|
if (mTransactionManager) {
|
|
nsCOMPtr<nsITransaction> txn = mTransactionManager->PeekUndoStack();
|
|
nsCOMPtr<nsIAbsorbingTransaction> plcTxn = do_QueryInterface(txn);
|
|
if (plcTxn) {
|
|
DebugOnly<nsresult> rv = plcTxn->Commit();
|
|
NS_ASSERTION(NS_SUCCEEDED(rv),
|
|
"nsIAbsorbingTransaction::Commit() failed");
|
|
}
|
|
}
|
|
|
|
// Composition string may have hidden the caret. Therefore, we need to
|
|
// cancel it here.
|
|
HideCaret(false);
|
|
|
|
// FYI: mComposition still keeps storing container text node of committed
|
|
// string, its offset and length. However, they will be invalidated
|
|
// soon since its Destroy() will be called by IMEStateManager.
|
|
mComposition->EndHandlingComposition(this);
|
|
mComposition = nullptr;
|
|
|
|
// notify editor observers of action
|
|
NotifyEditorObservers(eNotifyEditorObserversOfEnd);
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
TextEditor::GetInputEventTargetContent()
|
|
{
|
|
nsCOMPtr<nsIContent> target = do_QueryInterface(mEventTarget);
|
|
return target.forget();
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::DocumentIsEmpty(bool* aIsEmpty)
|
|
{
|
|
NS_ENSURE_TRUE(mRules, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
if (mRules->HasBogusNode()) {
|
|
*aIsEmpty = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
// Even if there is no bogus node, we should be detected as empty document
|
|
// if all the children are text nodes and these have no content.
|
|
Element* rootElement = GetRoot();
|
|
if (!rootElement) {
|
|
*aIsEmpty = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
for (nsIContent* child = rootElement->GetFirstChild();
|
|
child; child = child->GetNextSibling()) {
|
|
if (!EditorBase::IsTextNode(child) ||
|
|
static_cast<nsTextNode*>(child)->TextDataLength()) {
|
|
*aIsEmpty = false;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
*aIsEmpty = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::GetDocumentIsEmpty(bool* aDocumentIsEmpty)
|
|
{
|
|
return DocumentIsEmpty(aDocumentIsEmpty);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::GetTextLength(int32_t* aCount)
|
|
{
|
|
NS_ASSERTION(aCount, "null pointer");
|
|
|
|
// initialize out params
|
|
*aCount = 0;
|
|
|
|
// special-case for empty document, to account for the bogus node
|
|
bool docEmpty;
|
|
nsresult rv = GetDocumentIsEmpty(&docEmpty);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (docEmpty) {
|
|
return NS_OK;
|
|
}
|
|
|
|
dom::Element *rootElement = GetRoot();
|
|
NS_ENSURE_TRUE(rootElement, NS_ERROR_NULL_POINTER);
|
|
|
|
nsCOMPtr<nsIContentIterator> iter =
|
|
do_CreateInstance("@mozilla.org/content/post-content-iterator;1", &rv);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
uint32_t totalLength = 0;
|
|
iter->Init(rootElement);
|
|
for (; !iter->IsDone(); iter->Next()) {
|
|
nsCOMPtr<nsINode> currentNode = iter->GetCurrentNode();
|
|
if (IsTextNode(currentNode) && IsEditable(currentNode)) {
|
|
totalLength += currentNode->Length();
|
|
}
|
|
}
|
|
|
|
*aCount = totalLength;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::GetWrapWidth(int32_t* aWrapColumn)
|
|
{
|
|
NS_ENSURE_TRUE( aWrapColumn, NS_ERROR_NULL_POINTER);
|
|
|
|
*aWrapColumn = mWrapColumn;
|
|
return NS_OK;
|
|
}
|
|
|
|
//
|
|
// See if the style value includes this attribute, and if it does,
|
|
// cut out everything from the attribute to the next semicolon.
|
|
//
|
|
static void CutStyle(const char* stylename, nsString& styleValue)
|
|
{
|
|
// Find the current wrapping type:
|
|
int32_t styleStart = styleValue.Find(stylename, true);
|
|
if (styleStart >= 0) {
|
|
int32_t styleEnd = styleValue.Find(";", false, styleStart);
|
|
if (styleEnd > styleStart) {
|
|
styleValue.Cut(styleStart, styleEnd - styleStart + 1);
|
|
} else {
|
|
styleValue.Cut(styleStart, styleValue.Length() - styleStart);
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::SetWrapWidth(int32_t aWrapColumn)
|
|
{
|
|
SetWrapColumn(aWrapColumn);
|
|
|
|
// Make sure we're a plaintext editor, otherwise we shouldn't
|
|
// do the rest of this.
|
|
if (!IsPlaintextEditor()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Ought to set a style sheet here ...
|
|
// Probably should keep around an mPlaintextStyleSheet for this purpose.
|
|
dom::Element *rootElement = GetRoot();
|
|
NS_ENSURE_TRUE(rootElement, NS_ERROR_NULL_POINTER);
|
|
|
|
// Get the current style for this root element:
|
|
nsAutoString styleValue;
|
|
rootElement->GetAttr(kNameSpaceID_None, nsGkAtoms::style, styleValue);
|
|
|
|
// We'll replace styles for these values:
|
|
CutStyle("white-space", styleValue);
|
|
CutStyle("width", styleValue);
|
|
CutStyle("font-family", styleValue);
|
|
|
|
// If we have other style left, trim off any existing semicolons
|
|
// or whitespace, then add a known semicolon-space:
|
|
if (!styleValue.IsEmpty()) {
|
|
styleValue.Trim("; \t", false, true);
|
|
styleValue.AppendLiteral("; ");
|
|
}
|
|
|
|
// Make sure we have fixed-width font. This should be done for us,
|
|
// but it isn't, see bug 22502, so we have to add "font: -moz-fixed;".
|
|
// Only do this if we're wrapping.
|
|
if (IsWrapHackEnabled() && aWrapColumn >= 0) {
|
|
styleValue.AppendLiteral("font-family: -moz-fixed; ");
|
|
}
|
|
|
|
// and now we're ready to set the new whitespace/wrapping style.
|
|
if (aWrapColumn > 0) {
|
|
// Wrap to a fixed column.
|
|
styleValue.AppendLiteral("white-space: pre-wrap; width: ");
|
|
styleValue.AppendInt(aWrapColumn);
|
|
styleValue.AppendLiteral("ch;");
|
|
} else if (!aWrapColumn) {
|
|
styleValue.AppendLiteral("white-space: pre-wrap;");
|
|
} else {
|
|
styleValue.AppendLiteral("white-space: pre;");
|
|
}
|
|
|
|
return rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::style, styleValue, true);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::SetWrapColumn(int32_t aWrapColumn)
|
|
{
|
|
mWrapColumn = aWrapColumn;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::GetNewlineHandling(int32_t* aNewlineHandling)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aNewlineHandling);
|
|
|
|
*aNewlineHandling = mNewlineHandling;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::SetNewlineHandling(int32_t aNewlineHandling)
|
|
{
|
|
mNewlineHandling = aNewlineHandling;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::Undo(uint32_t aCount)
|
|
{
|
|
// If we don't have transaction in the undo stack, we shouldn't notify
|
|
// anybody of trying to undo since it's not useful notification but we
|
|
// need to pay some runtime cost.
|
|
if (!CanUndo()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// If there is composition, we shouldn't allow to undo with committing
|
|
// composition since Chrome doesn't allow it and it doesn't make sense
|
|
// because committing composition causes one transaction and Undo(1)
|
|
// undoes the committing composition.
|
|
if (GetComposition()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Protect the edit rules object from dying.
|
|
RefPtr<TextEditRules> rules(mRules);
|
|
|
|
AutoUpdateViewBatch beginViewBatching(this);
|
|
|
|
NotifyEditorObservers(eNotifyEditorObserversOfBefore);
|
|
if (NS_WARN_IF(!CanUndo()) || NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult rv;
|
|
{
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this, EditSubAction::eUndo,
|
|
nsIEditor::eNone);
|
|
|
|
EditSubActionInfo subActionInfo(EditSubAction::eUndo);
|
|
RefPtr<Selection> selection = GetSelection();
|
|
bool cancel, handled;
|
|
rv = rules->WillDoAction(selection, subActionInfo, &cancel, &handled);
|
|
if (!cancel && NS_SUCCEEDED(rv)) {
|
|
RefPtr<TransactionManager> transactionManager(mTransactionManager);
|
|
for (uint32_t i = 0; i < aCount; ++i) {
|
|
rv = transactionManager->Undo();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
break;
|
|
}
|
|
DoAfterUndoTransaction();
|
|
}
|
|
rv = rules->DidDoAction(selection, subActionInfo, rv);
|
|
}
|
|
}
|
|
|
|
NotifyEditorObservers(eNotifyEditorObserversOfEnd);
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::Redo(uint32_t aCount)
|
|
{
|
|
// If we don't have transaction in the redo stack, we shouldn't notify
|
|
// anybody of trying to redo since it's not useful notification but we
|
|
// need to pay some runtime cost.
|
|
if (!CanRedo()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// If there is composition, we shouldn't allow to redo with committing
|
|
// composition since Chrome doesn't allow it and it doesn't make sense
|
|
// because committing composition causes removing all transactions from
|
|
// the redo queue. So, it becomes impossible to redo anything.
|
|
if (GetComposition()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// Protect the edit rules object from dying.
|
|
RefPtr<TextEditRules> rules(mRules);
|
|
|
|
AutoUpdateViewBatch beginViewBatching(this);
|
|
|
|
NotifyEditorObservers(eNotifyEditorObserversOfBefore);
|
|
if (NS_WARN_IF(!CanRedo()) || NS_WARN_IF(Destroyed())) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult rv;
|
|
{
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this, EditSubAction::eRedo,
|
|
nsIEditor::eNone);
|
|
|
|
EditSubActionInfo subActionInfo(EditSubAction::eRedo);
|
|
RefPtr<Selection> selection = GetSelection();
|
|
bool cancel, handled;
|
|
rv = rules->WillDoAction(selection, subActionInfo, &cancel, &handled);
|
|
if (!cancel && NS_SUCCEEDED(rv)) {
|
|
RefPtr<TransactionManager> transactionManager(mTransactionManager);
|
|
for (uint32_t i = 0; i < aCount; ++i) {
|
|
nsresult rv = transactionManager->Redo();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
break;
|
|
}
|
|
DoAfterRedoTransaction();
|
|
}
|
|
rv = rules->DidDoAction(selection, subActionInfo, rv);
|
|
}
|
|
}
|
|
|
|
NotifyEditorObservers(eNotifyEditorObserversOfEnd);
|
|
return rv;
|
|
}
|
|
|
|
bool
|
|
TextEditor::CanCutOrCopy(PasswordFieldAllowed aPasswordFieldAllowed)
|
|
{
|
|
RefPtr<Selection> selection = GetSelection();
|
|
if (!selection) {
|
|
return false;
|
|
}
|
|
|
|
if (aPasswordFieldAllowed == ePasswordFieldNotAllowed &&
|
|
IsPasswordEditor()) {
|
|
return false;
|
|
}
|
|
|
|
return !selection->IsCollapsed();
|
|
}
|
|
|
|
bool
|
|
TextEditor::FireClipboardEvent(EventMessage aEventMessage,
|
|
int32_t aSelectionType,
|
|
bool* aActionTaken)
|
|
{
|
|
if (aEventMessage == ePaste) {
|
|
CommitComposition();
|
|
}
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = GetPresShell();
|
|
NS_ENSURE_TRUE(presShell, false);
|
|
|
|
RefPtr<Selection> selection = GetSelection();
|
|
if (!selection) {
|
|
return false;
|
|
}
|
|
|
|
if (!nsCopySupport::FireClipboardEvent(aEventMessage, aSelectionType,
|
|
presShell, selection, aActionTaken)) {
|
|
return false;
|
|
}
|
|
|
|
// If the event handler caused the editor to be destroyed, return false.
|
|
// Otherwise return true to indicate that the event was not cancelled.
|
|
return !mDidPreDestroy;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::Cut()
|
|
{
|
|
bool actionTaken = false;
|
|
if (FireClipboardEvent(eCut, nsIClipboard::kGlobalClipboard, &actionTaken)) {
|
|
// XXX This transaction name is referred by PlaceholderTransaction::Merge()
|
|
// so that we need to keep using it here.
|
|
AutoPlaceholderBatch batch(this, nsGkAtoms::DeleteTxnName);
|
|
DeleteSelectionAsSubAction(eNone, eStrip);
|
|
}
|
|
return actionTaken ? NS_OK : NS_ERROR_FAILURE;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::CanCut(bool* aCanCut)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aCanCut);
|
|
// Cut is always enabled in HTML documents
|
|
nsCOMPtr<nsIDocument> doc = GetDocument();
|
|
*aCanCut = (doc && doc->IsHTMLOrXHTML()) ||
|
|
(IsModifiable() && CanCutOrCopy(ePasswordFieldNotAllowed));
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::Copy()
|
|
{
|
|
bool actionTaken = false;
|
|
FireClipboardEvent(eCopy, nsIClipboard::kGlobalClipboard, &actionTaken);
|
|
|
|
return actionTaken ? NS_OK : NS_ERROR_FAILURE;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::CanCopy(bool* aCanCopy)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aCanCopy);
|
|
// Copy is always enabled in HTML documents
|
|
nsCOMPtr<nsIDocument> doc = GetDocument();
|
|
*aCanCopy = (doc && doc->IsHTMLOrXHTML()) ||
|
|
CanCutOrCopy(ePasswordFieldNotAllowed);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::CanDelete(bool* aCanDelete)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aCanDelete);
|
|
*aCanDelete = IsModifiable() && CanCutOrCopy(ePasswordFieldAllowed);
|
|
return NS_OK;
|
|
}
|
|
|
|
// Used by OutputToString
|
|
already_AddRefed<nsIDocumentEncoder>
|
|
TextEditor::GetAndInitDocEncoder(const nsAString& aFormatType,
|
|
uint32_t aFlags,
|
|
const nsACString& aCharset)
|
|
{
|
|
nsCOMPtr<nsIDocumentEncoder> docEncoder;
|
|
if (!mCachedDocumentEncoder ||
|
|
!mCachedDocumentEncoderType.Equals(aFormatType)) {
|
|
nsAutoCString formatType(NS_DOC_ENCODER_CONTRACTID_BASE);
|
|
LossyAppendUTF16toASCII(aFormatType, formatType);
|
|
docEncoder = do_CreateInstance(formatType.get());
|
|
if (NS_WARN_IF(!docEncoder)) {
|
|
return nullptr;
|
|
}
|
|
mCachedDocumentEncoder = docEncoder;
|
|
mCachedDocumentEncoderType = aFormatType;
|
|
} else {
|
|
docEncoder = mCachedDocumentEncoder;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocument> doc = GetDocument();
|
|
NS_ASSERTION(doc, "Need a document");
|
|
|
|
nsresult rv =
|
|
docEncoder->NativeInit(
|
|
doc, aFormatType,
|
|
aFlags | nsIDocumentEncoder::RequiresReinitAfterOutput);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!aCharset.IsEmpty() && !aCharset.EqualsLiteral("null")) {
|
|
docEncoder->SetCharset(aCharset);
|
|
}
|
|
|
|
int32_t wc;
|
|
(void) GetWrapWidth(&wc);
|
|
if (wc >= 0) {
|
|
(void) docEncoder->SetWrapColumn(wc);
|
|
}
|
|
|
|
// Set the selection, if appropriate.
|
|
// We do this either if the OutputSelectionOnly flag is set,
|
|
// in which case we use our existing selection ...
|
|
if (aFlags & nsIDocumentEncoder::OutputSelectionOnly) {
|
|
RefPtr<Selection> selection = GetSelection();
|
|
if (NS_WARN_IF(!selection)) {
|
|
return nullptr;
|
|
}
|
|
rv = docEncoder->SetSelection(selection);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
// ... or if the root element is not a body,
|
|
// in which case we set the selection to encompass the root.
|
|
else {
|
|
dom::Element* rootElement = GetRoot();
|
|
if (NS_WARN_IF(!rootElement)) {
|
|
return nullptr;
|
|
}
|
|
if (!rootElement->IsHTMLElement(nsGkAtoms::body)) {
|
|
rv = docEncoder->SetContainerNode(rootElement);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
return docEncoder.forget();
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::OutputToString(const nsAString& aFormatType,
|
|
uint32_t aFlags,
|
|
nsAString& aOutputString)
|
|
{
|
|
// Protect the edit rules object from dying
|
|
RefPtr<TextEditRules> rules(mRules);
|
|
|
|
EditSubActionInfo subActionInfo(EditSubAction::eComputeTextToOutput);
|
|
subActionInfo.outString = &aOutputString;
|
|
subActionInfo.flags = aFlags;
|
|
subActionInfo.outputFormat = &aFormatType;
|
|
Selection* selection = GetSelection();
|
|
if (NS_WARN_IF(!selection)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
bool cancel, handled;
|
|
nsresult rv =
|
|
rules->WillDoAction(selection, subActionInfo, &cancel, &handled);
|
|
if (cancel || NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
if (handled) {
|
|
// This case will get triggered by password fields or single text node only.
|
|
return rv;
|
|
}
|
|
|
|
nsAutoCString charsetStr;
|
|
rv = GetDocumentCharacterSet(charsetStr);
|
|
if (NS_FAILED(rv) || charsetStr.IsEmpty()) {
|
|
charsetStr.AssignLiteral("windows-1252");
|
|
}
|
|
|
|
nsCOMPtr<nsIDocumentEncoder> encoder =
|
|
GetAndInitDocEncoder(aFormatType, aFlags, charsetStr);
|
|
if (NS_WARN_IF(!encoder)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// XXX Why don't we call TextEditRules::DidDoAction() here?
|
|
return encoder->EncodeToString(aOutputString);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::InsertTextWithQuotations(const nsAString& aStringToInsert)
|
|
{
|
|
nsresult rv = InsertTextAsAction(aStringToInsert);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::PasteAsQuotation(int32_t aSelectionType)
|
|
{
|
|
// Get Clipboard Service
|
|
nsresult rv;
|
|
nsCOMPtr<nsIClipboard> clipboard(do_GetService("@mozilla.org/widget/clipboard;1", &rv));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Get the nsITransferable interface for getting the data from the clipboard
|
|
nsCOMPtr<nsITransferable> trans;
|
|
rv = PrepareTransferable(getter_AddRefs(trans));
|
|
if (NS_SUCCEEDED(rv) && trans) {
|
|
// Get the Data from the clipboard
|
|
clipboard->GetData(trans, aSelectionType);
|
|
|
|
// Now we ask the transferable for the data
|
|
// it still owns the data, we just have a pointer to it.
|
|
// If it can't support a "text" output of the data the call will fail
|
|
nsCOMPtr<nsISupports> genericDataObj;
|
|
uint32_t len;
|
|
nsAutoCString flav;
|
|
rv = trans->GetAnyTransferData(flav, getter_AddRefs(genericDataObj),
|
|
&len);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
if (flav.EqualsLiteral(kUnicodeMime) ||
|
|
flav.EqualsLiteral(kMozTextInternal)) {
|
|
nsCOMPtr<nsISupportsString> textDataObj ( do_QueryInterface(genericDataObj) );
|
|
if (textDataObj && len > 0) {
|
|
nsAutoString stuffToPaste;
|
|
textDataObj->GetData ( stuffToPaste );
|
|
AutoPlaceholderBatch beginBatching(this);
|
|
rv = InsertAsQuotation(stuffToPaste, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::InsertAsQuotation(const nsAString& aQuotedText,
|
|
nsINode** aNodeInserted)
|
|
{
|
|
// Protect the edit rules object from dying
|
|
RefPtr<TextEditRules> rules(mRules);
|
|
|
|
// Let the citer quote it for us:
|
|
nsString quotedStuff;
|
|
nsresult rv = InternetCiter::GetCiteString(aQuotedText, quotedStuff);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// It's best to put a blank line after the quoted text so that mails
|
|
// written without thinking won't be so ugly.
|
|
if (!aQuotedText.IsEmpty() && (aQuotedText.Last() != char16_t('\n'))) {
|
|
quotedStuff.Append(char16_t('\n'));
|
|
}
|
|
|
|
// get selection
|
|
RefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
|
|
|
|
AutoPlaceholderBatch beginBatching(this);
|
|
AutoTopLevelEditSubActionNotifier maybeTopLevelEditSubAction(
|
|
*this, EditSubAction::eInsertText,
|
|
nsIEditor::eNext);
|
|
|
|
// give rules a chance to handle or cancel
|
|
EditSubActionInfo subActionInfo(EditSubAction::eInsertElement);
|
|
bool cancel, handled;
|
|
rv = rules->WillDoAction(selection, subActionInfo, &cancel, &handled);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
if (cancel) {
|
|
return NS_OK; // Rules canceled the operation.
|
|
}
|
|
if (!handled) {
|
|
rv = InsertTextAsAction(quotedStuff);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to insert quoted text");
|
|
|
|
// XXX Should set *aNodeInserted to the first node inserted
|
|
if (aNodeInserted && NS_SUCCEEDED(rv)) {
|
|
*aNodeInserted = nullptr;
|
|
}
|
|
}
|
|
// XXX Why don't we call TextEditRules::DidDoAction()?
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::PasteAsCitedQuotation(const nsAString& aCitation,
|
|
int32_t aSelectionType)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::InsertAsCitedQuotation(const nsAString& aQuotedText,
|
|
const nsAString& aCitation,
|
|
bool aInsertHTML,
|
|
nsINode** aNodeInserted)
|
|
{
|
|
return InsertAsQuotation(aQuotedText, aNodeInserted);
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::SharedOutputString(uint32_t aFlags,
|
|
bool* aIsCollapsed,
|
|
nsAString& aResult)
|
|
{
|
|
RefPtr<Selection> selection = GetSelection();
|
|
NS_ENSURE_TRUE(selection, NS_ERROR_NOT_INITIALIZED);
|
|
|
|
*aIsCollapsed = selection->IsCollapsed();
|
|
|
|
if (!*aIsCollapsed) {
|
|
aFlags |= nsIDocumentEncoder::OutputSelectionOnly;
|
|
}
|
|
// If the selection isn't collapsed, we'll use the whole document.
|
|
|
|
return OutputToString(NS_LITERAL_STRING("text/plain"), aFlags, aResult);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::Rewrap(bool aRespectNewlines)
|
|
{
|
|
int32_t wrapCol;
|
|
nsresult rv = GetWrapWidth(&wrapCol);
|
|
NS_ENSURE_SUCCESS(rv, NS_OK);
|
|
|
|
// Rewrap makes no sense if there's no wrap column; default to 72.
|
|
if (wrapCol <= 0) {
|
|
wrapCol = 72;
|
|
}
|
|
|
|
nsAutoString current;
|
|
bool isCollapsed;
|
|
rv = SharedOutputString(nsIDocumentEncoder::OutputFormatted
|
|
| nsIDocumentEncoder::OutputLFLineBreak,
|
|
&isCollapsed, current);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsString wrapped;
|
|
uint32_t firstLineOffset = 0; // XXX need to reset this if there is a selection
|
|
rv = InternetCiter::Rewrap(current, wrapCol, firstLineOffset,
|
|
aRespectNewlines, wrapped);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (isCollapsed) {
|
|
DebugOnly<nsresult> rv = SelectAllInternal();
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to select all text");
|
|
}
|
|
|
|
return InsertTextWithQuotations(wrapped);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::StripCites()
|
|
{
|
|
nsAutoString current;
|
|
bool isCollapsed;
|
|
nsresult rv = SharedOutputString(nsIDocumentEncoder::OutputFormatted,
|
|
&isCollapsed, current);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsString stripped;
|
|
rv = InternetCiter::StripCites(current, stripped);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (isCollapsed) {
|
|
rv = SelectAllInternal();
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
rv = InsertTextAsAction(stripped);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
TextEditor::GetEmbeddedObjects(nsIArray** aNodeList)
|
|
{
|
|
if (NS_WARN_IF(!aNodeList)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
*aNodeList = nullptr;
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
TextEditor::OnStartToHandleTopLevelEditSubAction(
|
|
EditSubAction aEditSubAction,
|
|
nsIEditor::EDirection aDirection)
|
|
{
|
|
// Protect the edit rules object from dying
|
|
RefPtr<TextEditRules> rules(mRules);
|
|
|
|
EditorBase::OnStartToHandleTopLevelEditSubAction(aEditSubAction, aDirection);
|
|
if (!rules) {
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(mTopLevelEditSubAction == aEditSubAction);
|
|
MOZ_ASSERT(mDirection == aDirection);
|
|
DebugOnly<nsresult> rv =
|
|
rules->BeforeEdit(mTopLevelEditSubAction, mDirection);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"TextEditRules::BeforeEdit() failed to handle something");
|
|
}
|
|
|
|
void
|
|
TextEditor::OnEndHandlingTopLevelEditSubAction()
|
|
{
|
|
// Protect the edit rules object from dying
|
|
RefPtr<TextEditRules> rules(mRules);
|
|
|
|
// post processing
|
|
DebugOnly<nsresult> rv =
|
|
rules ? rules->AfterEdit(mTopLevelEditSubAction, mDirection) : NS_OK;
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
|
|
"TextEditRules::AfterEdit() failed to handle something");
|
|
EditorBase::OnEndHandlingTopLevelEditSubAction();
|
|
MOZ_ASSERT(!mTopLevelEditSubAction);
|
|
MOZ_ASSERT(mDirection == eNone);
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::SelectEntireDocument(Selection* aSelection)
|
|
{
|
|
if (!aSelection || !mRules) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
// Protect the edit rules object from dying
|
|
RefPtr<TextEditRules> rules(mRules);
|
|
|
|
// is doc empty?
|
|
if (rules->DocumentIsEmpty()) {
|
|
// get root node
|
|
Element* rootElement = GetRoot();
|
|
if (NS_WARN_IF(!rootElement)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// if it's empty don't select entire doc - that would select the bogus node
|
|
return aSelection->Collapse(rootElement, 0);
|
|
}
|
|
|
|
SelectionBatcher selectionBatcher(aSelection);
|
|
nsresult rv = EditorBase::SelectEntireDocument(aSelection);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Don't select the trailing BR node if we have one
|
|
nsCOMPtr<nsIContent> childNode;
|
|
rv = GetEndChildNode(aSelection, getter_AddRefs(childNode));
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
if (childNode) {
|
|
childNode = childNode->GetPreviousSibling();
|
|
}
|
|
|
|
if (childNode && TextEditUtils::IsMozBR(childNode)) {
|
|
int32_t parentOffset;
|
|
nsINode* parentNode = GetNodeLocation(childNode, &parentOffset);
|
|
|
|
return aSelection->Extend(parentNode, parentOffset);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
EventTarget*
|
|
TextEditor::GetDOMEventTarget()
|
|
{
|
|
return mEventTarget;
|
|
}
|
|
|
|
|
|
nsresult
|
|
TextEditor::SetAttributeOrEquivalent(Element* aElement,
|
|
nsAtom* aAttribute,
|
|
const nsAString& aValue,
|
|
bool aSuppressTransaction)
|
|
{
|
|
if (NS_WARN_IF(!aElement) || NS_WARN_IF(!aAttribute)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
return SetAttributeWithTransaction(*aElement, *aAttribute, aValue);
|
|
}
|
|
|
|
nsresult
|
|
TextEditor::RemoveAttributeOrEquivalent(Element* aElement,
|
|
nsAtom* aAttribute,
|
|
bool aSuppressTransaction)
|
|
{
|
|
if (NS_WARN_IF(!aElement) || NS_WARN_IF(!aAttribute)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
return RemoveAttributeWithTransaction(*aElement, *aAttribute);
|
|
}
|
|
|
|
} // namespace mozilla
|