mirror of
https://github.com/mozilla/gecko-dev.git
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033ffdd7ed
* added TextEditorTest.cpp, a unit test module for nsTextEditor. It's use is actually commented out since my checkin is happening so late due to all-day build bustage, and I don't have a Mac handy to verify. With someone's Mac help tomorrow, I can turn it on. * some minor bug fixes to property handling
502 lines
14 KiB
C++
502 lines
14 KiB
C++
/* -*- Mode: C++ tab-width: 2 indent-tabs-mode: nil c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL") you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsTextEditor.h"
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#include "nsHTMLEditor.h"
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#include "nsHTMLEditRules.h"
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#include "nsEditorEventListeners.h"
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#include "nsIDOMNodeList.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMEventReceiver.h"
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#include "nsIDOMKeyListener.h"
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#include "nsIDOMMouseListener.h"
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#include "nsIDOMSelection.h"
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#include "nsIDOMHTMLAnchorElement.h"
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#include "nsIDOMHTMLImageElement.h"
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#include "nsEditorCID.h"
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#include "nsIComponentManager.h"
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#include "nsIServiceManager.h"
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#include "nsITableCellLayout.h" //For GetColIndexForCell
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static NS_DEFINE_IID(kIDOMEventReceiverIID, NS_IDOMEVENTRECEIVER_IID);
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static NS_DEFINE_IID(kIDOMMouseListenerIID, NS_IDOMMOUSELISTENER_IID);
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static NS_DEFINE_IID(kIDOMKeyListenerIID, NS_IDOMKEYLISTENER_IID);
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static NS_DEFINE_CID(kEditorCID, NS_EDITOR_CID);
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static NS_DEFINE_IID(kIEditorIID, NS_IEDITOR_IID);
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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static NS_DEFINE_IID(kITextEditorIID, NS_ITEXTEDITOR_IID);
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static NS_DEFINE_CID(kTextEditorCID, NS_TEXTEDITOR_CID);
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static NS_DEFINE_IID(kIHTMLEditorIID, NS_IHTMLEDITOR_IID);
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static NS_DEFINE_CID(kHTMLEditorCID, NS_HTMLEDITOR_CID);
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nsHTMLEditor::nsHTMLEditor()
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{
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// Done in nsEditor
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// NS_INIT_REFCNT();
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}
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nsHTMLEditor::~nsHTMLEditor()
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{
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//the autopointers will clear themselves up.
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}
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// Adds appropriate AddRef, Release, and QueryInterface methods for derived class
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//NS_IMPL_ISUPPORTS_INHERITED(nsHTMLEditor, nsTextEditor, nsIHTMLEditor)
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//NS_IMPL_ADDREF_INHERITED(Class, Super)
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NS_IMETHODIMP_(nsrefcnt) nsHTMLEditor::AddRef(void)
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{
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return nsTextEditor::AddRef();
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}
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//NS_IMPL_RELEASE_INHERITED(Class, Super)
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NS_IMETHODIMP_(nsrefcnt) nsHTMLEditor::Release(void)
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{
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return nsTextEditor::Release();
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}
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//NS_IMPL_QUERY_INTERFACE_INHERITED(Class, Super, AdditionalInterface)
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NS_IMETHODIMP nsHTMLEditor::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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if (!aInstancePtr) return NS_ERROR_NULL_POINTER;
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if (aIID.Equals(nsIHTMLEditor::GetIID())) {
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*aInstancePtr = NS_STATIC_CAST(nsIHTMLEditor*, this);
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return nsTextEditor::QueryInterface(aIID, aInstancePtr);
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}
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NS_IMETHODIMP nsHTMLEditor::Init(nsIDOMDocument *aDoc, nsIPresShell *aPresShell)
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{
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NS_PRECONDITION(nsnull!=aDoc && nsnull!=aPresShell, "bad arg");
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nsresult result=NS_ERROR_NULL_POINTER;
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if ((nsnull!=aDoc) && (nsnull!=aPresShell))
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{
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return nsTextEditor::Init(aDoc, aPresShell);
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}
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return result;
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}
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void nsHTMLEditor::InitRules()
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{
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// instantiate the rules for this text editor
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// XXX: we should be told which set of rules to instantiate
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mRules = new nsHTMLEditRules();
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mRules->Init(this);
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}
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NS_IMETHODIMP nsHTMLEditor::SetTextProperty(nsIAtom *aProperty,
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const nsString *aAttribute,
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const nsString *aValue)
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{
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return nsTextEditor::SetTextProperty(aProperty, aAttribute, aValue);
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}
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NS_IMETHODIMP nsHTMLEditor::GetTextProperty(nsIAtom *aProperty,
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const nsString *aAttribute,
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const nsString *aValue,
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PRBool &aFirst, PRBool &aAny, PRBool &aAll)
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{
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return nsTextEditor::GetTextProperty(aProperty, aAttribute, aValue, aFirst, aAny, aAll);
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}
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NS_IMETHODIMP nsHTMLEditor::RemoveTextProperty(nsIAtom *aProperty, const nsString *aAttribute)
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{
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return nsTextEditor::RemoveTextProperty(aProperty, aAttribute);
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}
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NS_IMETHODIMP nsHTMLEditor::DeleteSelection(nsIEditor::Direction aDir)
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{
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return nsTextEditor::DeleteSelection(aDir);
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}
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NS_IMETHODIMP nsHTMLEditor::InsertText(const nsString& aStringToInsert)
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{
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return nsTextEditor::InsertText(aStringToInsert);
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}
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NS_IMETHODIMP nsHTMLEditor::InsertBreak()
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{
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nsresult result;
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if (!mRules) { return NS_ERROR_NOT_INITIALIZED; }
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nsCOMPtr<nsIDOMSelection> selection;
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PRBool cancel= PR_FALSE;
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result = nsEditor::BeginTransaction();
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if (NS_FAILED(result)) { return result; }
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// pre-process
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nsEditor::GetSelection(getter_AddRefs(selection));
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nsTextRulesInfo ruleInfo(nsHTMLEditRules::kInsertBreak);
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result = mRules->WillDoAction(selection, &ruleInfo, &cancel);
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if ((PR_FALSE==cancel) && (NS_SUCCEEDED(result)))
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{
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// create the new BR node
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nsCOMPtr<nsIDOMNode> newNode;
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nsAutoString tag("BR");
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result = nsEditor::DeleteSelectionAndCreateNode(tag, getter_AddRefs(newNode));
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if (NS_SUCCEEDED(result) && newNode)
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{
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// set the selection to the new node
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nsCOMPtr<nsIDOMNode>parent;
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result = newNode->GetParentNode(getter_AddRefs(parent));
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if (NS_SUCCEEDED(result) && parent)
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{
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PRInt32 offsetInParent=-1; // we use the -1 as a marker to see if we need to compute this or not
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nsCOMPtr<nsIDOMNode>nextNode;
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newNode->GetNextSibling(getter_AddRefs(nextNode));
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if (nextNode)
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{
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nsCOMPtr<nsIDOMCharacterData>nextTextNode;
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nextTextNode = do_QueryInterface(nextNode);
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if (!nextTextNode) {
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nextNode = do_QueryInterface(newNode);
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}
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else {
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offsetInParent=0;
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}
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}
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else {
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nextNode = do_QueryInterface(newNode);
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}
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result = nsEditor::GetSelection(getter_AddRefs(selection));
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if (NS_SUCCEEDED(result))
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{
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if (-1==offsetInParent)
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{
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nextNode->GetParentNode(getter_AddRefs(parent));
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result = nsIEditorSupport::GetChildOffset(nextNode, parent, offsetInParent);
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if (NS_SUCCEEDED(result)) {
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selection->Collapse(parent, offsetInParent+1); // +1 to insert just after the break
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}
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}
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else
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{
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selection->Collapse(nextNode, offsetInParent);
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}
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}
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}
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}
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// post-process, always called if WillInsertBreak didn't return cancel==PR_TRUE
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result = mRules->DidDoAction(selection, &ruleInfo, result);
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}
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nsresult endTxnResult = nsEditor::EndTransaction(); // don't return this result!
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NS_ASSERTION ((NS_SUCCEEDED(endTxnResult)), "bad end transaction result");
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// XXXX: Horrible hack! We are doing this because
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// of an error in Gecko which is not rendering the
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// document after a change via the DOM - gpk 2/13/99
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// BEGIN HACK!!!
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HACKForceRedraw();
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// END HACK
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return result;
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}
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// Methods shared with the base editor.
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// Note: We could call each of these via nsTextEditor -- is that better?
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NS_IMETHODIMP nsHTMLEditor::EnableUndo(PRBool aEnable)
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{
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return nsTextEditor::EnableUndo(aEnable);
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}
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NS_IMETHODIMP nsHTMLEditor::Undo(PRUint32 aCount)
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{
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return nsTextEditor::Undo(aCount);
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}
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NS_IMETHODIMP nsHTMLEditor::CanUndo(PRBool &aIsEnabled, PRBool &aCanUndo)
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{
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return nsTextEditor::CanUndo(aIsEnabled, aCanUndo);
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}
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NS_IMETHODIMP nsHTMLEditor::Redo(PRUint32 aCount)
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{
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return nsTextEditor::Redo(aCount);
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}
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NS_IMETHODIMP nsHTMLEditor::CanRedo(PRBool &aIsEnabled, PRBool &aCanRedo)
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{
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return nsTextEditor::CanRedo(aIsEnabled, aCanRedo);
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}
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NS_IMETHODIMP nsHTMLEditor::BeginTransaction()
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{
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return nsTextEditor::BeginTransaction();
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}
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NS_IMETHODIMP nsHTMLEditor::EndTransaction()
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{
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return nsTextEditor::EndTransaction();
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}
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NS_IMETHODIMP nsHTMLEditor::MoveSelectionUp(nsIAtom *aIncrement, PRBool aExtendSelection)
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{
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return nsTextEditor::MoveSelectionUp(aIncrement, aExtendSelection);
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}
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NS_IMETHODIMP nsHTMLEditor::MoveSelectionDown(nsIAtom *aIncrement, PRBool aExtendSelection)
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{
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return nsTextEditor::MoveSelectionDown(aIncrement, aExtendSelection);
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}
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NS_IMETHODIMP nsHTMLEditor::MoveSelectionNext(nsIAtom *aIncrement, PRBool aExtendSelection)
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{
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return nsTextEditor::MoveSelectionNext(aIncrement, aExtendSelection);
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}
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NS_IMETHODIMP nsHTMLEditor::MoveSelectionPrevious(nsIAtom *aIncrement, PRBool aExtendSelection)
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{
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return nsTextEditor::MoveSelectionPrevious(aIncrement, aExtendSelection);
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}
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NS_IMETHODIMP nsHTMLEditor::SelectNext(nsIAtom *aIncrement, PRBool aExtendSelection)
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{
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return nsTextEditor::SelectNext(aIncrement, aExtendSelection);
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}
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NS_IMETHODIMP nsHTMLEditor::SelectPrevious(nsIAtom *aIncrement, PRBool aExtendSelection)
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{
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return nsTextEditor::SelectPrevious(aIncrement, aExtendSelection);
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}
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NS_IMETHODIMP nsHTMLEditor::SelectAll()
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{
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return nsTextEditor::SelectAll();
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}
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NS_IMETHODIMP nsHTMLEditor::ScrollUp(nsIAtom *aIncrement)
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{
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return nsTextEditor::ScrollUp(aIncrement);
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}
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NS_IMETHODIMP nsHTMLEditor::ScrollDown(nsIAtom *aIncrement)
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{
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return nsTextEditor::ScrollDown(aIncrement);
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}
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NS_IMETHODIMP nsHTMLEditor::ScrollIntoView(PRBool aScrollToBegin)
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{
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return nsTextEditor::ScrollIntoView(aScrollToBegin);
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}
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NS_IMETHODIMP nsHTMLEditor::Cut()
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{
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return nsTextEditor::Cut();
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}
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NS_IMETHODIMP nsHTMLEditor::Copy()
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{
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return nsTextEditor::Copy();
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}
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NS_IMETHODIMP nsHTMLEditor::Paste()
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{
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return nsTextEditor::Paste();
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}
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NS_IMETHODIMP nsHTMLEditor::Insert(nsString& aInputString)
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{
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return nsTextEditor::Insert(aInputString);
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}
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NS_IMETHODIMP nsHTMLEditor::OutputText(nsString& aOutputString)
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{
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return nsTextEditor::OutputText(aOutputString);
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}
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NS_IMETHODIMP nsHTMLEditor::OutputHTML(nsString& aOutputString)
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{
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return nsTextEditor::OutputHTML(aOutputString);
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}
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//================================================================
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// HTML Editor methods
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//
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// Note: Table Editing methods are implemented in EditTable.cpp
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//
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NS_IMETHODIMP
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nsHTMLEditor::InsertLink(nsString& aURL)
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{
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nsresult res = nsEditor::BeginTransaction();
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// Find out if the selection is collapsed:
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nsCOMPtr<nsIDOMSelection> selection;
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res = GetSelection(getter_AddRefs(selection));
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if (!NS_SUCCEEDED(res) || !selection)
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{
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#ifdef DEBUG_akkana
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printf("Can't get selection!");
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#endif
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return res;
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}
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PRBool isCollapsed;
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res = selection->GetIsCollapsed(&isCollapsed);
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if (!NS_SUCCEEDED(res))
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isCollapsed = PR_TRUE;
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// Temporary: we need to save the contents of the selection,
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// then insert them back in as the child of the newly created
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// anchor node in order to put the link around the selection.
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// This will require copying the selection into a document fragment,
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// then splicing the document fragment back into the tree after the
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// new anchor node has been put in place. As a temporary solution,
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// Copy/Paste does this for us in the text case
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// (and eventually in all cases).
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if (!isCollapsed)
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(void)Copy();
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nsCOMPtr<nsIDOMNode> newNode;
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nsAutoString tag("A");
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res = nsEditor::DeleteSelectionAndCreateNode(tag, getter_AddRefs(newNode));
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if (!NS_SUCCEEDED(res) || !newNode)
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return res;
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nsCOMPtr<nsIDOMHTMLAnchorElement> anchor (do_QueryInterface(newNode));
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if (!anchor)
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{
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#ifdef DEBUG_akkana
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printf("Not an anchor element\n");
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#endif
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return NS_NOINTERFACE;
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}
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res = anchor->SetHref(aURL);
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if (!NS_SUCCEEDED(res))
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{
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#ifdef DEBUG_akkana
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printf("SetHref failed");
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#endif
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return res;
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}
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// Set the selection to the node we just inserted:
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res = GetSelection(getter_AddRefs(selection));
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if (!NS_SUCCEEDED(res) || !selection)
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{
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#ifdef DEBUG_akkana
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printf("Can't get selection!");
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#endif
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return res;
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}
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res = selection->Collapse(newNode, 0);
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if (!NS_SUCCEEDED(res))
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{
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#ifdef DEBUG_akkana
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printf("Couldn't collapse");
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#endif
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return res;
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}
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// If we weren't collapsed, paste the old selection back in under the link:
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if (!isCollapsed)
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(void)Paste();
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// Otherwise (we were collapsed) insert some bogus text in
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// so the link will be visible
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else
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{
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nsString link("[***]");
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(void) InsertText(link); // ignore return value -- we don't care
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}
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nsEditor::EndTransaction(); // don't return this result!
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLEditor::InsertImage(nsString& aURL,
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nsString& aWidth, nsString& aHeight,
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nsString& aHspace, nsString& aVspace,
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nsString& aBorder,
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nsString& aAlt,
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nsString& aAlignment)
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{
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nsresult res;
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nsCOMPtr<nsIDOMNode> newNode;
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nsCOMPtr<nsIDOMDocument>doc;
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res = GetDocument(getter_AddRefs(doc));
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if (NS_SUCCEEDED(res))
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{
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nsAutoString tag("IMG");
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nsCOMPtr<nsIDOMElement>newElement;
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res = doc->CreateElement(tag, getter_AddRefs(newElement));
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if (NS_SUCCEEDED(res) && newElement)
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{
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newNode = do_QueryInterface(newElement);
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nsCOMPtr<nsIDOMHTMLImageElement> image (do_QueryInterface(newNode));
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// Set all the attributes now, before we insert into the tree:
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if (image)
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{
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if (NS_SUCCEEDED(res = image->SetSrc(aURL)))
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if (NS_SUCCEEDED(res = image->SetWidth(aWidth)))
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if (NS_SUCCEEDED(res = image->SetHeight(aHeight)))
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if (NS_SUCCEEDED(res = image->SetAlt(aAlt)))
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if (NS_SUCCEEDED(res = image->SetBorder(aBorder)))
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if (NS_SUCCEEDED(res = image->SetAlign(aAlignment)))
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if (NS_SUCCEEDED(res = image->SetHspace(aHspace)))
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if (NS_SUCCEEDED(res = image->SetVspace(aVspace)))
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;
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}
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}
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}
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// If any of these failed, then don't insert the new node into the tree
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if (!NS_SUCCEEDED(res))
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{
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#ifdef DEBUG_akkana
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printf("Some failure creating the new image node\n");
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#endif
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return res;
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}
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//
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// Now we're ready to insert the new image node:
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// Starting now, don't return without ending the transaction!
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//
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(void)nsEditor::BeginTransaction();
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nsCOMPtr<nsIDOMNode> parentNode;
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PRInt32 offsetOfNewNode;
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res = nsEditor::DeleteSelectionAndPrepareToCreateNode(parentNode,
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offsetOfNewNode);
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if (NS_SUCCEEDED(res))
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{
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// and insert it into the right place in the tree:
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res = InsertNode(newNode, parentNode, offsetOfNewNode);
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}
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(void)nsEditor::EndTransaction(); // don't return this result!
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return res;
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}
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