mirror of
https://github.com/mozilla/gecko-dev.git
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5136 lines
145 KiB
C++
5136 lines
145 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.com>
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*/
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#include "pratom.h"
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#include "nsVoidArray.h"
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#include "nsIDOMDocument.h"
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#include "nsIPref.h"
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#include "nsILocale.h"
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#include "nsIDOMText.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMAttr.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMComment.h"
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#include "nsIDOMNamedNodeMap.h"
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#include "nsIDOMNodeList.h"
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#include "nsIDOMRange.h"
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#include "nsIDocument.h"
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#include "nsIDiskDocument.h"
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#include "nsIServiceManager.h"
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#include "nsTransactionManagerCID.h"
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#include "nsITransactionManager.h"
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#include "nsIAbsorbingTransaction.h"
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#include "nsIPresShell.h"
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#include "nsIPresContext.h"
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#include "nsIViewManager.h"
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#include "nsISelection.h"
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#include "nsISelectionPrivate.h"
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#include "nsIEnumerator.h"
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#include "nsIAtom.h"
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#include "nsISupportsArray.h"
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#include "nsICaret.h"
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#include "nsIStyleContext.h"
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#include "nsIEditActionListener.h"
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#include "nsIEditorObserver.h"
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#include "nsIKBStateControl.h"
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#include "nsIWidget.h"
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#include "nsIScrollbar.h"
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#include "nsIPlaintextEditor.h"
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#include "nsIFrame.h" // Needed by IME code
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#include "nsICSSLoader.h"
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#include "nsICSSStyleSheet.h"
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#include "nsIHTMLContentContainer.h"
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#include "nsIStyleSet.h"
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#include "nsIDocumentObserver.h"
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#include "nsIDocumentStateListener.h"
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#include "nsIStringStream.h"
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#include "nsITextContent.h"
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#include "nsNetUtil.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 "nsLayoutCID.h"
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// transactions the editor knows how to build
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#include "TransactionFactory.h"
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#include "EditAggregateTxn.h"
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#include "PlaceholderTxn.h"
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#include "ChangeAttributeTxn.h"
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#include "CreateElementTxn.h"
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#include "InsertElementTxn.h"
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#include "DeleteElementTxn.h"
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#include "InsertTextTxn.h"
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#include "DeleteTextTxn.h"
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#include "DeleteRangeTxn.h"
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#include "SplitElementTxn.h"
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#include "JoinElementTxn.h"
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#include "nsStyleSheetTxns.h"
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#include "IMETextTxn.h"
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// included for nsEditor::CreateHTMLContent
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#include "nsIElementFactory.h"
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#include "nsINodeInfo.h"
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#include "nsINameSpaceManager.h"
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// #define HACK_FORCE_REDRAW 1
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#include "nsEditorCID.h"
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#include "nsEditor.h"
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#include "nsEditorUtils.h"
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#ifdef HACK_FORCE_REDRAW
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// INCLUDES FOR EVIL HACK TO FOR REDRAW
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// BEGIN
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#include "nsIViewManager.h"
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#include "nsIView.h"
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// END
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#endif
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static NS_DEFINE_CID(kCRangeCID, NS_RANGE_CID);
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static NS_DEFINE_CID(kCContentIteratorCID, NS_CONTENTITERATOR_CID);
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static NS_DEFINE_CID(kCDOMRangeCID, NS_RANGE_CID);
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static NS_DEFINE_CID(kPrefServiceCID, NS_PREF_CID);
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// transaction manager
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static NS_DEFINE_CID(kCTransactionManagerCID, NS_TRANSACTIONMANAGER_CID);
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#ifdef XP_PC
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#define TRANSACTION_MANAGER_DLL "txmgr.dll"
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#else
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#ifdef XP_MAC
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#define TRANSACTION_MANAGER_DLL "TRANSACTION_MANAGER_DLL"
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#else // XP_UNIX || XP_BEOS
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#define TRANSACTION_MANAGER_DLL "libtxmgr"MOZ_DLL_SUFFIX
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#endif
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#endif
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#define NS_ERROR_EDITOR_NO_SELECTION NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_EDITOR,1)
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#define NS_ERROR_EDITOR_NO_TEXTNODE NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_EDITOR,2)
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const char* nsEditor::kMOZEditorBogusNodeAttr="_moz_editor_bogus_node";
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const char* nsEditor::kMOZEditorBogusNodeValue="TRUE";
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#ifdef NS_DEBUG_EDITOR
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static PRBool gNoisy = PR_FALSE;
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#else
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static const PRBool gNoisy = PR_FALSE;
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#endif
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PRInt32 nsEditor::gInstanceCount = 0;
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//---------------------------------------------------------------------------
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//
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// nsEditor: base editor class implementation
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//
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//---------------------------------------------------------------------------
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nsIAtom *nsEditor::gTypingTxnName;
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nsIAtom *nsEditor::gIMETxnName;
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nsIAtom *nsEditor::gDeleteTxnName;
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nsEditor::nsEditor()
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: mPresShellWeak(nsnull)
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, mViewManager(nsnull)
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, mUpdateCount(0)
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, mPlaceHolderTxn(nsnull)
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, mPlaceHolderName(nsnull)
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, mPlaceHolderBatch(0)
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, mSelState(nsnull)
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, mSavedSel()
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, mRangeUpdater()
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, mShouldTxnSetSelection(PR_TRUE)
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, mBodyElement(nsnull)
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, mAction(nsnull)
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, mDirection(eNone)
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, mInIMEMode(PR_FALSE)
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, mIMETextRangeList(nsnull)
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, mIMETextNode(nsnull)
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, mIMETextOffset(0)
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, mIMEBufferLength(0)
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, mActionListeners(nsnull)
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, mEditorObservers(nsnull)
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, mDocDirtyState(-1)
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, mDocWeak(nsnull)
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{
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//initialize member variables here
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NS_INIT_REFCNT();
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PR_AtomicIncrement(&gInstanceCount);
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if (!gTypingTxnName)
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gTypingTxnName = NS_NewAtom("Typing");
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else
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NS_ADDREF(gTypingTxnName);
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if (!gIMETxnName)
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gIMETxnName = NS_NewAtom("IME");
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else
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NS_ADDREF(gIMETxnName);
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if (!gDeleteTxnName)
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gDeleteTxnName = NS_NewAtom("Deleting");
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else
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NS_ADDREF(gDeleteTxnName);
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}
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nsEditor::~nsEditor()
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{
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/* first, delete the transaction manager if there is one.
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this will release any remaining transactions.
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this is important because transactions can hold onto the atoms (gTypingTxnName, ...)
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and to make the optimization (holding refcounted statics) work correctly,
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the editor instance needs to hold the last refcount.
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If you get this wrong, expect to deref a garbage gTypingTxnName pointer if you bring up a second editor.
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*/
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if (mTxnMgr) {
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mTxnMgr = 0;
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}
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nsrefcnt refCount=0;
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if (gTypingTxnName) // we addref'd in the constructor
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{ // want to release it without nulling out the pointer.
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refCount = gTypingTxnName->Release();
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if (0==refCount) {
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gTypingTxnName = nsnull;
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}
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}
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if (gIMETxnName) // we addref'd in the constructor
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{ // want to release it without nulling out the pointer.
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refCount = gIMETxnName->Release();
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if (0==refCount) {
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gIMETxnName = nsnull;
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}
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}
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if (gDeleteTxnName) // we addref'd in the constructor
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{ // want to release it without nulling out the pointer.
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refCount = gDeleteTxnName->Release();
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if (0==refCount) {
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gDeleteTxnName = nsnull;
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}
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}
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delete mEditorObservers; // no need to release observers; we didn't addref them
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mEditorObservers = 0;
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if (mActionListeners)
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{
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PRInt32 i;
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nsIEditActionListener *listener;
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for (i = 0; i < mActionListeners->Count(); i++)
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{
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listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
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NS_IF_RELEASE(listener);
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}
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delete mActionListeners;
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mActionListeners = 0;
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}
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/* shut down all classes that needed initialization */
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InsertTextTxn::ClassShutdown();
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IMETextTxn::ClassShutdown();
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PR_AtomicDecrement(&gInstanceCount);
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}
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// BEGIN nsEditor core implementation
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NS_IMPL_ADDREF(nsEditor)
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NS_IMPL_RELEASE(nsEditor)
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NS_IMPL_QUERY_INTERFACE3(nsEditor, nsIEditor, nsIEditorIMESupport, nsISupportsWeakReference)
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#ifdef XP_MAC
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#pragma mark -
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#pragma mark nsIEditorMethods
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#pragma mark -
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#endif
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NS_IMETHODIMP
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nsEditor::Init(nsIDOMDocument *aDoc, nsIPresShell* aPresShell, nsIContent *aRoot, nsISelectionController *aSelCon, PRUint32 aFlags)
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{
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NS_PRECONDITION(nsnull!=aDoc && nsnull!=aPresShell, "bad arg");
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if ((nsnull==aDoc) || (nsnull==aPresShell))
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return NS_ERROR_NULL_POINTER;
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mFlags = aFlags;
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mDocWeak = getter_AddRefs( NS_GetWeakReference(aDoc) ); // weak reference to doc
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mPresShellWeak = getter_AddRefs( NS_GetWeakReference(aPresShell) ); // weak reference to pres shell
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mSelConWeak = getter_AddRefs( NS_GetWeakReference(aSelCon) ); // weak reference to selectioncontroller
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nsCOMPtr<nsIPresShell> ps = do_QueryReferent(mPresShellWeak);
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if (!ps) return NS_ERROR_NOT_INITIALIZED;
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//set up body element if we are passed one.
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if (aRoot)
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mBodyElement = do_QueryInterface(aRoot);
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// Set up the DTD
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// XXX - in the long run we want to get this from the document, but there
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// is no way to do that right now. So we leave it null here and set
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// up a nav html dtd in nsHTMLEditor::Init
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ps->GetViewManager(&mViewManager);
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if (!mViewManager) {return NS_ERROR_NULL_POINTER;}
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mViewManager->Release(); //we want a weak link
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mUpdateCount=0;
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InsertTextTxn::ClassInit();
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/* initalize IME stuff */
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IMETextTxn::ClassInit();
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mIMETextNode = do_QueryInterface(nsnull);
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mIMETextOffset = 0;
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mIMEBufferLength = 0;
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/* Show the caret */
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aSelCon->SetCaretReadOnly(PR_FALSE);
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aSelCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
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aSelCon->SetDisplayNonTextSelection(PR_TRUE);//we want to see all the selection reflected to user
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// Set the selection to the beginning:
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//hack to get around this for now.
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nsCOMPtr<nsIPresShell> shell = do_QueryReferent(mSelConWeak);
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if (shell)
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BeginningOfDocument();
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NS_POSTCONDITION(mDocWeak && mPresShellWeak, "bad state");
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditor::PostCreate()
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{
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// nuke the modification count, so the doc appears unmodified
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// do this before we notify listeners
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ResetDocModCount();
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// update the UI with our state
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NotifyDocumentListeners(eDocumentCreated);
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NotifyDocumentListeners(eDocumentStateChanged);
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// Call ResetInputState() for initialization
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ForceCompositionEnd();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditor::PreDestroy()
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{
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// tell our listeners that the doc is going away
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NotifyDocumentListeners(eDocumentToBeDestroyed);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditor::GetFlags(PRUint32 *aFlags)
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{
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*aFlags = mFlags;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditor::SetFlags(PRUint32 aFlags)
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{
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mFlags = aFlags;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditor::GetDocument(nsIDOMDocument **aDoc)
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{
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if (!aDoc)
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return NS_ERROR_NULL_POINTER;
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*aDoc = nsnull; // init out param
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NS_PRECONDITION(mDocWeak, "bad state, mDocWeak weak pointer not initialized");
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if (!mDocWeak) return NS_ERROR_NOT_INITIALIZED;
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nsCOMPtr<nsIDOMDocument> doc = do_QueryReferent(mDocWeak);
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if (!doc) return NS_ERROR_NOT_INITIALIZED;
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NS_ADDREF(*aDoc = doc);
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return NS_OK;
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}
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nsresult
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nsEditor::GetPresShell(nsIPresShell **aPS)
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{
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if (!aPS)
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return NS_ERROR_NULL_POINTER;
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*aPS = nsnull; // init out param
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NS_PRECONDITION(mPresShellWeak, "bad state, null mPresShellWeak");
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if (!mPresShellWeak) return NS_ERROR_NOT_INITIALIZED;
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nsCOMPtr<nsIPresShell> ps = do_QueryReferent(mPresShellWeak);
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if (!ps) return NS_ERROR_NOT_INITIALIZED;
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NS_ADDREF(*aPS = ps);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditor::GetSelectionController(nsISelectionController **aSel)
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{
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if (!aSel)
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return NS_ERROR_NULL_POINTER;
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*aSel = nsnull; // init out param
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NS_PRECONDITION(mSelConWeak, "bad state, null mSelConWeak");
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if (!mSelConWeak) return NS_ERROR_NOT_INITIALIZED;
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nsCOMPtr<nsISelectionController> selCon = do_QueryReferent(mSelConWeak);
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if (!selCon) return NS_ERROR_NOT_INITIALIZED;
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NS_ADDREF(*aSel = selCon);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditor::DeleteSelection(EDirection aAction)
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{
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return DeleteSelectionImpl(aAction);
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}
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NS_IMETHODIMP
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nsEditor::GetSelection(nsISelection **aSelection)
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{
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if (!aSelection)
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return NS_ERROR_NULL_POINTER;
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*aSelection = nsnull;
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if (!mSelConWeak) return NS_ERROR_NOT_INITIALIZED;
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nsCOMPtr<nsISelectionController> selcon = do_QueryReferent(mSelConWeak);
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if (!selcon) return NS_ERROR_NOT_INITIALIZED;
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nsresult result = selcon->GetSelection(nsISelectionController::SELECTION_NORMAL, aSelection); // does an addref
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return result;
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}
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NS_IMETHODIMP
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nsEditor::Do(nsITransaction *aTxn)
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{
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if (gNoisy) { printf("Editor::Do ----------\n"); }
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nsresult result = NS_OK;
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if (mPlaceHolderBatch && !mPlaceHolderTxn)
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{
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// it's pretty darn amazing how many different types of pointers
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// this transaction goes through here. I bet this is a record.
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// We start off with an EditTxn since that's what the factory returns.
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EditTxn *editTxn;
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result = TransactionFactory::GetNewTransaction(PlaceholderTxn::GetCID(), &editTxn);
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if (NS_FAILED(result)) { return result; }
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if (!editTxn) { return NS_ERROR_NULL_POINTER; }
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// Then we QI to an nsIAbsorbingTransaction to get at placeholder functionality
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nsCOMPtr<nsIAbsorbingTransaction> plcTxn;
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editTxn->QueryInterface(NS_GET_IID(nsIAbsorbingTransaction), getter_AddRefs(plcTxn));
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// have to use line above instead of "plcTxn = do_QueryInterface(editTxn);"
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// due to our broken interface model for transactions.
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// save off weak reference to placeholder txn
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mPlaceHolderTxn = getter_AddRefs( NS_GetWeakReference(plcTxn) );
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plcTxn->Init(mPlaceHolderName, mSelState, this);
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mSelState = nsnull; // placeholder txn took ownership of this pointer
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// finally we QI to an nsITransaction since that's what Do() expects
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nsCOMPtr<nsITransaction> theTxn = do_QueryInterface(plcTxn);
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nsITransaction* txn = theTxn;
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Do(txn); // we will recurse, but will not hit this case in the nested call
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// The transaction system (if any) has taken ownwership of txn
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NS_IF_RELEASE(txn);
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}
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if (aTxn)
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{
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// get the selection and start a batch change
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nsCOMPtr<nsISelection>selection;
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result = GetSelection(getter_AddRefs(selection));
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if (NS_FAILED(result)) { return result; }
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if (!selection) { return NS_ERROR_NULL_POINTER; }
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nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(selection));
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selPrivate->StartBatchChanges();
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if (mTxnMgr) {
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result = mTxnMgr->DoTransaction(aTxn);
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}
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else {
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result = aTxn->DoTransaction();
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}
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if (NS_SUCCEEDED(result)) {
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result = DoAfterDoTransaction(aTxn);
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}
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selPrivate->EndBatchChanges(); // no need to check result here, don't lose result of operation
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}
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NS_POSTCONDITION((NS_SUCCEEDED(result)), "transaction did not execute properly\n");
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return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::EnableUndo(PRBool aEnable)
|
|
{
|
|
nsresult result=NS_OK;
|
|
|
|
if (PR_TRUE==aEnable)
|
|
{
|
|
if (!mTxnMgr)
|
|
{
|
|
result = nsComponentManager::CreateInstance(kCTransactionManagerCID,
|
|
nsnull,
|
|
NS_GET_IID(nsITransactionManager), getter_AddRefs(mTxnMgr));
|
|
if (NS_FAILED(result) || !mTxnMgr) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
}
|
|
mTxnMgr->SetMaxTransactionCount(-1);
|
|
}
|
|
else
|
|
{ // disable the transaction manager if it is enabled
|
|
if (mTxnMgr)
|
|
{
|
|
mTxnMgr->Clear();
|
|
mTxnMgr->SetMaxTransactionCount(0);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetTransactionManager(nsITransactionManager* *aTxnManager)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aTxnManager);
|
|
|
|
*aTxnManager = NULL;
|
|
if (!mTxnMgr)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
NS_ADDREF(*aTxnManager = mTxnMgr);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Undo(PRUint32 aCount)
|
|
{
|
|
if (gNoisy) { printf("Editor::Undo ----------\n"); }
|
|
nsresult result = NS_OK;
|
|
ForceCompositionEnd();
|
|
|
|
nsAutoRules beginRulesSniffing(this, kOpUndo, nsIEditor::eNone);
|
|
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
PRUint32 i=0;
|
|
for ( ; i<aCount; i++)
|
|
{
|
|
result = mTxnMgr->UndoTransaction();
|
|
|
|
if (NS_SUCCEEDED(result))
|
|
result = DoAfterUndoTransaction();
|
|
|
|
if (NS_FAILED(result))
|
|
break;
|
|
}
|
|
}
|
|
|
|
NotifyEditorObservers();
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::CanUndo(PRBool *aIsEnabled, PRBool *aCanUndo)
|
|
{
|
|
if (!aIsEnabled || !aCanUndo)
|
|
return NS_ERROR_NULL_POINTER;
|
|
*aIsEnabled = ((PRBool)((nsITransactionManager *)0!=mTxnMgr.get()));
|
|
if (*aIsEnabled)
|
|
{
|
|
PRInt32 numTxns=0;
|
|
mTxnMgr->GetNumberOfUndoItems(&numTxns);
|
|
*aCanUndo = ((PRBool)(0!=numTxns));
|
|
}
|
|
else {
|
|
*aCanUndo = PR_FALSE;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Redo(PRUint32 aCount)
|
|
{
|
|
if (gNoisy) { printf("Editor::Redo ----------\n"); }
|
|
nsresult result = NS_OK;
|
|
|
|
nsAutoRules beginRulesSniffing(this, kOpRedo, nsIEditor::eNone);
|
|
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
PRUint32 i=0;
|
|
for ( ; i<aCount; i++)
|
|
{
|
|
result = mTxnMgr->RedoTransaction();
|
|
|
|
if (NS_SUCCEEDED(result))
|
|
result = DoAfterRedoTransaction();
|
|
|
|
if (NS_FAILED(result))
|
|
break;
|
|
}
|
|
}
|
|
|
|
NotifyEditorObservers();
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::CanRedo(PRBool *aIsEnabled, PRBool *aCanRedo)
|
|
{
|
|
if (!aIsEnabled || !aCanRedo)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aIsEnabled = ((PRBool)((nsITransactionManager *)0!=mTxnMgr.get()));
|
|
if (*aIsEnabled)
|
|
{
|
|
PRInt32 numTxns=0;
|
|
mTxnMgr->GetNumberOfRedoItems(&numTxns);
|
|
*aCanRedo = ((PRBool)(0!=numTxns));
|
|
}
|
|
else {
|
|
*aCanRedo = PR_FALSE;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::BeginTransaction()
|
|
{
|
|
BeginUpdateViewBatch();
|
|
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
mTxnMgr->BeginBatch();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::EndTransaction()
|
|
{
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
mTxnMgr->EndBatch();
|
|
}
|
|
|
|
EndUpdateViewBatch();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
// These two routines are similar to the above, but do not use
|
|
// the transaction managers batching feature. Instead we use
|
|
// a placeholder transaction to wrap up any further transaction
|
|
// while the batch is open. The advantage of this is that
|
|
// placeholder transactions can later merge, if needed. Merging
|
|
// is unavailable between transaction manager batches.
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::BeginPlaceHolderTransaction(nsIAtom *aName)
|
|
{
|
|
NS_PRECONDITION(mPlaceHolderBatch >= 0, "negative placeholder batch count!");
|
|
if (!mPlaceHolderBatch)
|
|
{
|
|
// time to turn on the batch
|
|
BeginUpdateViewBatch();
|
|
mPlaceHolderTxn = nsnull;
|
|
mPlaceHolderName = aName;
|
|
nsCOMPtr<nsISelection> selection;
|
|
nsresult res = GetSelection(getter_AddRefs(selection));
|
|
if (NS_FAILED(res)) return res;
|
|
mSelState = new nsSelectionState();
|
|
mSelState->SaveSelection(selection);
|
|
}
|
|
mPlaceHolderBatch++;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::EndPlaceHolderTransaction()
|
|
{
|
|
NS_PRECONDITION(mPlaceHolderBatch > 0, "zero or negative placeholder batch count when ending batch!");
|
|
if (mPlaceHolderBatch == 1)
|
|
{
|
|
// time to turn off the batch
|
|
EndUpdateViewBatch();
|
|
// make sure selection is in view
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
if (NS_SUCCEEDED(GetSelectionController(getter_AddRefs(selCon))) && selCon)
|
|
selCon->ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL, nsISelectionController::SELECTION_FOCUS_REGION);
|
|
|
|
if (mSelState)
|
|
{
|
|
// we saved the selection state, but never got to hand it to placeholder
|
|
// (else we ould have nulled out this pointer), so destroy it to prevent leaks.
|
|
delete mSelState;
|
|
mSelState = nsnull;
|
|
}
|
|
if (mPlaceHolderTxn) // we might have never made a placeholder if no action took place
|
|
{
|
|
nsCOMPtr<nsIAbsorbingTransaction> plcTxn = do_QueryReferent(mPlaceHolderTxn);
|
|
if (plcTxn)
|
|
{
|
|
plcTxn->EndPlaceHolderBatch();
|
|
}
|
|
else
|
|
{
|
|
// in the future we will check to make sure undo is off here,
|
|
// since that is the only known case where the placeholdertxn would disappear on us.
|
|
// For now just removing the assert.
|
|
}
|
|
// notify editor observers of action unless it is uncommitted IME
|
|
if (!mInIMEMode) NotifyEditorObservers();
|
|
}
|
|
}
|
|
mPlaceHolderBatch--;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::ShouldTxnSetSelection(PRBool *aResult)
|
|
{
|
|
if (!aResult) return NS_ERROR_NULL_POINTER;
|
|
*aResult = mShouldTxnSetSelection;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetDocumentIsEmpty(PRBool *aDocumentIsEmpty)
|
|
{
|
|
nsCOMPtr<nsIDOMElement> rootElement;
|
|
nsresult res = GetRootElement(getter_AddRefs(rootElement));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!rootElement) return NS_ERROR_NULL_POINTER;
|
|
nsCOMPtr<nsIDOMNode> rootNode = do_QueryInterface(rootElement);
|
|
nsCOMPtr<nsIDOMNode> firstChild;
|
|
res = rootNode->GetFirstChild(getter_AddRefs(firstChild));
|
|
|
|
if(NS_SUCCEEDED(res))
|
|
*aDocumentIsEmpty = PR_TRUE;
|
|
else
|
|
*aDocumentIsEmpty = PR_FALSE;
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
// XXX: the rule system should tell us which node to select all on (ie, the root, or the body)
|
|
NS_IMETHODIMP nsEditor::SelectAll()
|
|
{
|
|
if (!mDocWeak || !mPresShellWeak) { return NS_ERROR_NOT_INITIALIZED; }
|
|
ForceCompositionEnd();
|
|
|
|
nsCOMPtr<nsISelection> selection;
|
|
nsCOMPtr<nsISelectionController> selCon = do_QueryReferent(mSelConWeak);
|
|
if (!selCon) return NS_ERROR_NOT_INITIALIZED;
|
|
nsresult result = selCon->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(result) && selection)
|
|
{
|
|
result = SelectEntireDocument(selection);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::BeginningOfDocument()
|
|
{
|
|
if (!mDocWeak || !mPresShellWeak) { return NS_ERROR_NOT_INITIALIZED; }
|
|
|
|
nsCOMPtr<nsISelection> selection;
|
|
if (!mPresShellWeak) return NS_ERROR_NOT_INITIALIZED;
|
|
nsCOMPtr<nsISelectionController> selCon = do_QueryReferent(mSelConWeak);
|
|
if (!selCon) return NS_ERROR_NOT_INITIALIZED;
|
|
nsresult result = selCon->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(result) && selection)
|
|
{
|
|
nsCOMPtr<nsIDOMNodeList> nodeList;
|
|
nsAutoString bodyTag; bodyTag.AssignWithConversion("body");
|
|
nsCOMPtr<nsIDOMDocument> doc = do_QueryReferent(mDocWeak);
|
|
if (!doc) return NS_ERROR_NOT_INITIALIZED;
|
|
result = doc->GetElementsByTagName(bodyTag, getter_AddRefs(nodeList));
|
|
if ((NS_SUCCEEDED(result)) && nodeList)
|
|
{
|
|
PRUint32 count;
|
|
nodeList->GetLength(&count);
|
|
if (1!=count) { return NS_ERROR_UNEXPECTED; }
|
|
nsCOMPtr<nsIDOMNode> bodyNode;
|
|
result = nodeList->Item(0, getter_AddRefs(bodyNode));
|
|
if ((NS_SUCCEEDED(result)) && bodyNode)
|
|
{
|
|
// Get the first child of the body node:
|
|
nsCOMPtr<nsIDOMNode> firstNode;
|
|
result = GetFirstEditableNode(bodyNode, address_of(firstNode));
|
|
if (firstNode)
|
|
{
|
|
// if firstNode is text, set selection to beginning of the text node
|
|
if (IsTextNode(firstNode))
|
|
{
|
|
result = selection->Collapse(firstNode, 0);
|
|
}
|
|
else
|
|
{ // otherwise, it's a leaf node and we set the selection just in front of it
|
|
nsCOMPtr<nsIDOMNode> parentNode;
|
|
result = firstNode->GetParentNode(getter_AddRefs(parentNode));
|
|
if (NS_FAILED(result)) { return result; }
|
|
if (!parentNode) { return NS_ERROR_NULL_POINTER; }
|
|
PRInt32 offsetInParent;
|
|
result = nsEditor::GetChildOffset(firstNode, parentNode, offsetInParent);
|
|
if (NS_FAILED(result)) return result;
|
|
result = selection->Collapse(parentNode, offsetInParent);
|
|
}
|
|
ScrollIntoView(PR_TRUE);
|
|
}
|
|
else
|
|
{
|
|
// just the body node, set selection to inside the body
|
|
result = selection->Collapse(bodyNode, 0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::EndOfDocument()
|
|
{
|
|
if (!mDocWeak || !mPresShellWeak) { return NS_ERROR_NOT_INITIALIZED; }
|
|
nsresult res;
|
|
|
|
// get selection
|
|
nsCOMPtr<nsISelection> selection;
|
|
res = GetSelection(getter_AddRefs(selection));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!selection) return NS_ERROR_NULL_POINTER;
|
|
|
|
// get the root element
|
|
nsCOMPtr<nsIDOMElement> rootElement;
|
|
res = GetRootElement(getter_AddRefs(rootElement));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!rootElement) return NS_ERROR_NULL_POINTER;
|
|
nsCOMPtr<nsIDOMNode> rootNode = do_QueryInterface(rootElement);
|
|
|
|
// get the length of the rot element
|
|
PRUint32 len;
|
|
res = GetLengthOfDOMNode(rootNode, len);
|
|
if (NS_FAILED(res)) return res;
|
|
|
|
// set the selection to after the last child of the root element
|
|
res = selection->Collapse(rootNode, (PRInt32)len);
|
|
return res;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetDocumentModified(PRBool *outDocModified)
|
|
{
|
|
if (!outDocModified)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIDOMDocument> theDoc;
|
|
nsresult rv = GetDocument(getter_AddRefs(theDoc));
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
nsCOMPtr<nsIDiskDocument> diskDoc = do_QueryInterface(theDoc, &rv);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
PRInt32 modCount = 0;
|
|
diskDoc->GetModificationCount(&modCount);
|
|
|
|
*outDocModified = (modCount != 0);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetDocumentCharacterSet(nsAWritableString &characterSet)
|
|
{
|
|
nsresult rv;
|
|
nsCOMPtr<nsIDocument> doc;
|
|
nsCOMPtr<nsIPresShell> presShell;
|
|
|
|
rv = GetPresShell(getter_AddRefs(presShell));
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
presShell->GetDocument(getter_AddRefs(doc));
|
|
if (doc )
|
|
return doc->GetDocumentCharacterSet(characterSet);
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
return rv;
|
|
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetDocumentCharacterSet(const nsAReadableString& characterSet)
|
|
{
|
|
nsresult rv;
|
|
nsCOMPtr<nsIDocument> doc;
|
|
nsCOMPtr<nsIPresShell> presShell;
|
|
|
|
rv = GetPresShell(getter_AddRefs(presShell));
|
|
if (NS_SUCCEEDED(rv))
|
|
{
|
|
presShell->GetDocument(getter_AddRefs(doc));
|
|
if (doc) {
|
|
return doc->SetDocumentCharacterSet(characterSet);
|
|
}
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
//
|
|
// Get an appropriate wrap width for saving this document.
|
|
// This class just uses a pref; subclasses are expected to
|
|
// override if they know more about the document.
|
|
//
|
|
NS_IMETHODIMP
|
|
nsEditor::GetWrapWidth(PRInt32 *aWrapColumn)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aWrapColumn);
|
|
*aWrapColumn = 72;
|
|
|
|
nsresult rv;
|
|
NS_WITH_SERVICE(nsIPref, prefs, NS_PREF_CONTRACTID, &rv);
|
|
if (NS_SUCCEEDED(rv) && prefs)
|
|
(void) prefs->GetIntPref("editor.htmlWrapColumn", aWrapColumn);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SaveFile(nsIFile *aFileSpec, PRBool aReplaceExisting,
|
|
PRBool aSaveCopy, const nsAReadableString& aFormat)
|
|
{
|
|
if (!aFileSpec)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
ForceCompositionEnd();
|
|
|
|
// get the document
|
|
nsCOMPtr<nsIDOMDocument> doc;
|
|
nsresult rv = GetDocument(getter_AddRefs(doc));
|
|
if (NS_FAILED(rv)) return rv;
|
|
if (!doc) return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIDiskDocument> diskDoc = do_QueryInterface(doc);
|
|
if (!diskDoc)
|
|
return NS_ERROR_NO_INTERFACE;
|
|
|
|
PRUint32 flags = nsIDocumentEncoder::OutputEncodeEntities;
|
|
if (aFormat == NS_LITERAL_STRING("text/plain"))
|
|
{
|
|
// When saving in "text/plain" format, always do formatting
|
|
flags |= nsIDocumentEncoder::OutputFormatted;
|
|
}
|
|
else
|
|
{
|
|
// Should we prettyprint? Check the pref
|
|
NS_WITH_SERVICE(nsIPref, prefService, kPrefServiceCID, &rv);
|
|
if (NS_SUCCEEDED(rv) && prefService)
|
|
{
|
|
PRBool prettyprint = PR_FALSE;;
|
|
rv = prefService->GetBoolPref("editor.prettyprint", &prettyprint);
|
|
if (NS_SUCCEEDED(rv) && prettyprint)
|
|
flags |= nsIDocumentEncoder::OutputFormatted;
|
|
}
|
|
}
|
|
|
|
PRInt32 wrapColumn = 72;
|
|
GetWrapWidth(&wrapColumn);
|
|
if (wrapColumn > 0)
|
|
flags |= nsIDocumentEncoder::OutputWrap;
|
|
const nsPromiseFlatString &formatFlat = PromiseFlatString(aFormat);
|
|
rv = diskDoc->SaveFile(aFileSpec, aReplaceExisting, aSaveCopy,
|
|
formatFlat.get(), NS_LITERAL_STRING("").get(),
|
|
flags, wrapColumn);
|
|
if (NS_SUCCEEDED(rv))
|
|
DoAfterDocumentSave();
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Cut()
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CanCut(PRBool *aCanCut)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Copy()
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CanCopy(PRBool *aCanCut)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::Paste(PRInt32 aSelectionType)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CanPaste(PRInt32 aSelectionType, PRBool *aCanPaste)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CanDrag(nsIDOMEvent *aEvent, PRBool *aCanDrag)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DoDrag(nsIDOMEvent *aEvent)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::InsertFromDrop(nsIDOMEvent *aEvent)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetAttribute(nsIDOMElement *aElement, const nsAReadableString & aAttribute, const nsAReadableString & aValue)
|
|
{
|
|
ChangeAttributeTxn *txn;
|
|
nsresult result = CreateTxnForSetAttribute(aElement, aAttribute, aValue, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
// The transaction system (if any) has taken ownwership of txn
|
|
NS_IF_RELEASE(txn);
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetAttributeValue(nsIDOMElement *aElement,
|
|
const nsAReadableString & aAttribute,
|
|
nsAWritableString & aResultValue,
|
|
PRBool *aResultIsSet)
|
|
{
|
|
if (!aResultIsSet)
|
|
return NS_ERROR_NULL_POINTER;
|
|
*aResultIsSet=PR_FALSE;
|
|
nsresult result=NS_OK;
|
|
if (nsnull!=aElement)
|
|
{
|
|
nsCOMPtr<nsIDOMAttr> attNode;
|
|
result = aElement->GetAttributeNode(aAttribute, getter_AddRefs(attNode));
|
|
if ((NS_SUCCEEDED(result)) && attNode)
|
|
{
|
|
attNode->GetSpecified(aResultIsSet);
|
|
attNode->GetValue(aResultValue);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::RemoveAttribute(nsIDOMElement *aElement, const nsAReadableString& aAttribute)
|
|
{
|
|
ChangeAttributeTxn *txn;
|
|
nsresult result = CreateTxnForRemoveAttribute(aElement, aAttribute, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
// The transaction system (if any) has taken ownwership of txn
|
|
NS_IF_RELEASE(txn);
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::MarkNodeDirty(nsIDOMNode* aNode)
|
|
{
|
|
// mark the node dirty.
|
|
nsCOMPtr<nsIDOMElement> element (do_QueryInterface(aNode));
|
|
if (element)
|
|
element->SetAttribute(NS_ConvertASCIItoUCS2("_moz_dirty"), nsAutoString());
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#pragma mark main node manipulation routines
|
|
#pragma mark -
|
|
#endif
|
|
|
|
NS_IMETHODIMP nsEditor::CreateNode(const nsAReadableString& aTag,
|
|
nsIDOMNode * aParent,
|
|
PRInt32 aPosition,
|
|
nsIDOMNode ** aNewNode)
|
|
{
|
|
PRInt32 i;
|
|
nsIEditActionListener *listener;
|
|
|
|
nsAutoRules beginRulesSniffing(this, kOpCreateNode, nsIEditor::eNext);
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->WillCreateNode(aTag, aParent, aPosition);
|
|
}
|
|
}
|
|
|
|
CreateElementTxn *txn;
|
|
nsresult result = CreateTxnForCreateElement(aTag, aParent, aPosition, &txn);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
result = Do(txn);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
result = txn->GetNewNode(aNewNode);
|
|
NS_ASSERTION((NS_SUCCEEDED(result)), "GetNewNode can't fail if txn::DoTransaction succeeded.");
|
|
}
|
|
}
|
|
// The transaction system (if any) has taken ownwership of txn
|
|
NS_IF_RELEASE(txn);
|
|
|
|
mRangeUpdater.SelAdjCreateNode(aParent, aPosition);
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->DidCreateNode(aTag, *aNewNode, aParent, aPosition, result);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::InsertNode(nsIDOMNode * aNode,
|
|
nsIDOMNode * aParent,
|
|
PRInt32 aPosition)
|
|
{
|
|
PRInt32 i;
|
|
nsIEditActionListener *listener;
|
|
nsAutoRules beginRulesSniffing(this, kOpInsertNode, nsIEditor::eNext);
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->WillInsertNode(aNode, aParent, aPosition);
|
|
}
|
|
}
|
|
|
|
InsertElementTxn *txn;
|
|
nsresult result = CreateTxnForInsertElement(aNode, aParent, aPosition, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
// The transaction system (if any) has taken ownwership of txn
|
|
NS_IF_RELEASE(txn);
|
|
|
|
mRangeUpdater.SelAdjInsertNode(aParent, aPosition);
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->DidInsertNode(aNode, aParent, aPosition, result);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SplitNode(nsIDOMNode * aNode,
|
|
PRInt32 aOffset,
|
|
nsIDOMNode **aNewLeftNode)
|
|
{
|
|
PRInt32 i;
|
|
nsIEditActionListener *listener;
|
|
nsAutoRules beginRulesSniffing(this, kOpSplitNode, nsIEditor::eNext);
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->WillSplitNode(aNode, aOffset);
|
|
}
|
|
}
|
|
|
|
SplitElementTxn *txn;
|
|
nsresult result = CreateTxnForSplitNode(aNode, aOffset, &txn);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
result = Do(txn);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
result = txn->GetNewNode(aNewLeftNode);
|
|
NS_ASSERTION((NS_SUCCEEDED(result)), "result must succeeded for GetNewNode");
|
|
}
|
|
}
|
|
// The transaction system (if any) has taken ownwership of txn
|
|
NS_IF_RELEASE(txn);
|
|
|
|
mRangeUpdater.SelAdjSplitNode(aNode, aOffset, *aNewLeftNode);
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
{
|
|
nsIDOMNode *ptr = (aNewLeftNode) ? *aNewLeftNode : 0;
|
|
listener->DidSplitNode(aNode, aOffset, ptr, result);
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::JoinNodes(nsIDOMNode * aLeftNode,
|
|
nsIDOMNode * aRightNode,
|
|
nsIDOMNode * aParent)
|
|
{
|
|
PRInt32 i, offset;
|
|
PRUint32 oldLeftNodeLen;
|
|
nsIEditActionListener *listener;
|
|
nsAutoRules beginRulesSniffing(this, kOpJoinNode, nsIEditor::ePrevious);
|
|
|
|
// remember some values; later used for saved selection updating.
|
|
// find the offset between the nodes to be joined.
|
|
nsresult result = GetChildOffset(aRightNode, aParent, offset);
|
|
if (NS_FAILED(result)) return result;
|
|
// find the number of children of the lefthand node
|
|
result = GetLengthOfDOMNode(aLeftNode, oldLeftNodeLen);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->WillJoinNodes(aLeftNode, aRightNode, aParent);
|
|
}
|
|
}
|
|
|
|
JoinElementTxn *txn;
|
|
result = CreateTxnForJoinNode(aLeftNode, aRightNode, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
|
|
// The transaction system (if any) has taken ownwership of txn
|
|
NS_IF_RELEASE(txn);
|
|
|
|
mRangeUpdater.SelAdjJoinNodes(aLeftNode, aRightNode, aParent, offset, (PRInt32)oldLeftNodeLen);
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->DidJoinNodes(aLeftNode, aRightNode, aParent, result);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::DeleteNode(nsIDOMNode * aElement)
|
|
{
|
|
PRInt32 i, offset;
|
|
nsCOMPtr<nsIDOMNode> parent;
|
|
nsIEditActionListener *listener;
|
|
nsAutoRules beginRulesSniffing(this, kOpCreateNode, nsIEditor::ePrevious);
|
|
|
|
// save node location for selection updating code.
|
|
nsresult result = GetNodeLocation(aElement, address_of(parent), &offset);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->WillDeleteNode(aElement);
|
|
}
|
|
}
|
|
|
|
DeleteElementTxn *txn;
|
|
result = CreateTxnForDeleteElement(aElement, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
|
|
// The transaction system (if any) has taken ownwership of txn
|
|
NS_IF_RELEASE(txn);
|
|
|
|
mRangeUpdater.SelAdjDeleteNode(aElement, parent, offset);
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->DidDeleteNode(aElement, result);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// ReplaceContainer: replace inNode with a new node (outNode) which is contructed
|
|
// to be of type aNodeType. Put inNodes children into outNode.
|
|
// Callers responsibility to make sure inNode's children can
|
|
// go in outNode.
|
|
nsresult
|
|
nsEditor::ReplaceContainer(nsIDOMNode *inNode,
|
|
nsCOMPtr<nsIDOMNode> *outNode,
|
|
const nsAReadableString &aNodeType,
|
|
const nsAReadableString *aAttribute,
|
|
const nsAReadableString *aValue,
|
|
PRBool aCloneAttributes)
|
|
{
|
|
if (!inNode || !outNode)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsresult res;
|
|
nsCOMPtr<nsIDOMNode> parent;
|
|
PRInt32 offset;
|
|
res = GetNodeLocation(inNode, address_of(parent), &offset);
|
|
if (NS_FAILED(res)) return res;
|
|
|
|
// get our doc
|
|
nsCOMPtr<nsIDOMDocument>doc;
|
|
res = GetDocument(getter_AddRefs(doc));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!doc) return NS_ERROR_NULL_POINTER;
|
|
|
|
// create new container
|
|
nsCOMPtr<nsIDOMElement> elem;
|
|
nsCOMPtr<nsIContent> newContent;
|
|
|
|
//new call to use instead to get proper HTML element, bug# 39919
|
|
res = CreateHTMLContent(aNodeType, getter_AddRefs(newContent));
|
|
elem = do_QueryInterface(newContent);
|
|
if (NS_FAILED(res)) return res;
|
|
*outNode = do_QueryInterface(elem);
|
|
|
|
// set attribute if needed
|
|
if (aAttribute && aValue && !aAttribute->IsEmpty())
|
|
{
|
|
res = elem->SetAttribute(*aAttribute, *aValue);
|
|
if (NS_FAILED(res)) return res;
|
|
}
|
|
if (aCloneAttributes)
|
|
{
|
|
nsCOMPtr<nsIDOMNode>newNode = do_QueryInterface(elem);
|
|
res = CloneAttributes(newNode, inNode);
|
|
if (NS_FAILED(res)) return res;
|
|
}
|
|
|
|
// notify our internal selection state listener
|
|
// (Note: A nsAutoSelectionReset object must be created
|
|
// before calling this to initialize mRangeUpdater)
|
|
nsAutoReplaceContainerSelNotify selStateNotify(mRangeUpdater, inNode, *outNode);
|
|
|
|
nsCOMPtr<nsIDOMNode> child;
|
|
PRBool bHasMoreChildren;
|
|
inNode->HasChildNodes(&bHasMoreChildren);
|
|
while (bHasMoreChildren)
|
|
{
|
|
inNode->GetLastChild(getter_AddRefs(child));
|
|
res = DeleteNode(child);
|
|
if (NS_FAILED(res)) return res;
|
|
res = InsertNode(child, *outNode, 0);
|
|
if (NS_FAILED(res)) return res;
|
|
inNode->HasChildNodes(&bHasMoreChildren);
|
|
}
|
|
|
|
// insert new container into tree
|
|
res = InsertNode( *outNode, parent, offset);
|
|
if (NS_FAILED(res)) return res;
|
|
|
|
// delete old container
|
|
return DeleteNode(inNode);
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// RemoveContainer: remove inNode, reparenting it's children into their
|
|
// the parent of inNode
|
|
//
|
|
nsresult
|
|
nsEditor::RemoveContainer(nsIDOMNode *inNode)
|
|
{
|
|
if (!inNode)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsresult res;
|
|
nsCOMPtr<nsIDOMNode> parent;
|
|
PRInt32 offset;
|
|
PRUint32 nodeOrigLen;
|
|
|
|
res = GetNodeLocation(inNode, address_of(parent), &offset);
|
|
if (NS_FAILED(res)) return res;
|
|
|
|
// loop through the child nodes of inNode and promote them
|
|
// into inNode's parent.
|
|
PRBool bHasMoreChildren;
|
|
inNode->HasChildNodes(&bHasMoreChildren);
|
|
nsCOMPtr<nsIDOMNodeList> nodeList;
|
|
res = inNode->GetChildNodes(getter_AddRefs(nodeList));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!nodeList) return NS_ERROR_NULL_POINTER;
|
|
nodeList->GetLength(&nodeOrigLen);
|
|
|
|
// notify our internal selection state listener
|
|
nsAutoRemoveContainerSelNotify selNotify(mRangeUpdater, inNode, parent, offset, nodeOrigLen);
|
|
|
|
nsCOMPtr<nsIDOMNode> child;
|
|
while (bHasMoreChildren)
|
|
{
|
|
inNode->GetLastChild(getter_AddRefs(child));
|
|
res = DeleteNode(child);
|
|
if (NS_FAILED(res)) return res;
|
|
res = InsertNode(child, parent, offset);
|
|
if (NS_FAILED(res)) return res;
|
|
inNode->HasChildNodes(&bHasMoreChildren);
|
|
}
|
|
res = DeleteNode(inNode);
|
|
return res;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// InsertContainerAbove: insert a new parent for inNode, returned in outNode,
|
|
// which is contructed to be of type aNodeType. outNode becomes
|
|
// a child of inNode's earlier parent.
|
|
// Callers responsibility to make sure inNode's can be child
|
|
// of outNode, and outNode can be child of old parent.
|
|
nsresult
|
|
nsEditor::InsertContainerAbove( nsIDOMNode *inNode,
|
|
nsCOMPtr<nsIDOMNode> *outNode,
|
|
const nsAReadableString &aNodeType,
|
|
const nsAReadableString *aAttribute,
|
|
const nsAReadableString *aValue)
|
|
{
|
|
if (!inNode || !outNode)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsresult res;
|
|
nsCOMPtr<nsIDOMNode> parent;
|
|
PRInt32 offset;
|
|
res = GetNodeLocation(inNode, address_of(parent), &offset);
|
|
if (NS_FAILED(res)) return res;
|
|
|
|
// get our doc
|
|
nsCOMPtr<nsIDOMDocument>doc;
|
|
res = GetDocument(getter_AddRefs(doc));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!doc) return NS_ERROR_NULL_POINTER;
|
|
|
|
// create new container
|
|
nsCOMPtr<nsIDOMElement> elem;
|
|
nsCOMPtr<nsIContent> newContent;
|
|
|
|
//new call to use instead to get proper HTML element, bug# 39919
|
|
res = CreateHTMLContent(aNodeType, getter_AddRefs(newContent));
|
|
elem = do_QueryInterface(newContent);
|
|
if (NS_FAILED(res)) return res;
|
|
*outNode = do_QueryInterface(elem);
|
|
|
|
// set attribute if needed
|
|
if (aAttribute && aValue && !aAttribute->IsEmpty())
|
|
{
|
|
res = elem->SetAttribute(*aAttribute, *aValue);
|
|
if (NS_FAILED(res)) return res;
|
|
}
|
|
|
|
// notify our internal selection state listener
|
|
nsAutoInsertContainerSelNotify selNotify(mRangeUpdater);
|
|
|
|
// put inNode in new parent, outNode
|
|
res = DeleteNode(inNode);
|
|
if (NS_FAILED(res)) return res;
|
|
res = InsertNode(inNode, *outNode, 0);
|
|
if (NS_FAILED(res)) return res;
|
|
|
|
// put new parent in doc
|
|
res = InsertNode(*outNode, parent, offset);
|
|
return res;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// MoveNode: move aNode to {aParent,aOffset}
|
|
nsresult
|
|
nsEditor::MoveNode(nsIDOMNode *aNode, nsIDOMNode *aParent, PRInt32 aOffset)
|
|
{
|
|
if (!aNode || !aParent)
|
|
return NS_ERROR_NULL_POINTER;
|
|
nsresult res;
|
|
|
|
nsCOMPtr<nsIDOMNode> oldParent;
|
|
PRInt32 oldOffset;
|
|
res = GetNodeLocation(aNode, address_of(oldParent), &oldOffset);
|
|
|
|
if (aOffset == -1)
|
|
{
|
|
PRUint32 unsignedOffset;
|
|
// magic value meaning "move to end of aParent"
|
|
res = GetLengthOfDOMNode(aParent, unsignedOffset);
|
|
if (NS_FAILED(res)) return res;
|
|
aOffset = (PRInt32)unsignedOffset;
|
|
}
|
|
|
|
// dont do anything if it's already in right place
|
|
if ((aParent == oldParent.get()) && (oldOffset == aOffset)) return NS_OK;
|
|
|
|
// notify our internal selection state listener
|
|
nsAutoMoveNodeSelNotify selNotify(mRangeUpdater, oldParent, oldOffset, aParent, aOffset);
|
|
|
|
// need to adjust aOffset if we are moving aNode further along in it's current parent
|
|
if ((aParent == oldParent.get()) && (oldOffset < aOffset))
|
|
{
|
|
aOffset--; // this is because when we delete aNode, it will make the offsets after it off by one
|
|
}
|
|
|
|
// put aNode in new parent
|
|
res = DeleteNode(aNode);
|
|
if (NS_FAILED(res)) return res;
|
|
res = InsertNode(aNode, aParent, aOffset);
|
|
return res;
|
|
}
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#pragma mark editor observer maintainance
|
|
#pragma mark -
|
|
#endif
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::AddEditorObserver(nsIEditorObserver *aObserver)
|
|
{
|
|
// we don't keep ownership of the observers. They must
|
|
// remove themselves as observers before they are destroyed.
|
|
|
|
if (!aObserver)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
if (!mEditorObservers)
|
|
{
|
|
mEditorObservers = new nsVoidArray();
|
|
|
|
if (!mEditorObservers)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// Make sure the listener isn't already on the list
|
|
if (mEditorObservers->IndexOf(aObserver) == -1)
|
|
{
|
|
if (!mEditorObservers->AppendElement((void *)aObserver))
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::RemoveEditorObserver(nsIEditorObserver *aObserver)
|
|
{
|
|
if (!aObserver || !mEditorObservers)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
if (!mEditorObservers->RemoveElement((void *)aObserver))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsEditor::NotifyEditorObservers(void)
|
|
{
|
|
if (mEditorObservers)
|
|
{
|
|
PRInt32 i;
|
|
nsIEditorObserver *observer;
|
|
for (i = 0; i < mEditorObservers->Count(); i++)
|
|
{
|
|
observer = (nsIEditorObserver*)mEditorObservers->ElementAt(i);
|
|
if (observer)
|
|
observer->EditAction();
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#pragma mark action listener maintainance
|
|
#pragma mark -
|
|
#endif
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::AddEditActionListener(nsIEditActionListener *aListener)
|
|
{
|
|
if (!aListener)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
if (!mActionListeners)
|
|
{
|
|
mActionListeners = new nsVoidArray();
|
|
|
|
if (!mActionListeners)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// Make sure the listener isn't already on the list
|
|
if (mActionListeners->IndexOf(aListener) == -1)
|
|
{
|
|
if (!mActionListeners->AppendElement((void *)aListener))
|
|
return NS_ERROR_FAILURE;
|
|
else
|
|
NS_ADDREF(aListener);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::RemoveEditActionListener(nsIEditActionListener *aListener)
|
|
{
|
|
if (!aListener || !mActionListeners)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
if (!mActionListeners->RemoveElement((void *)aListener))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
NS_IF_RELEASE(aListener);
|
|
|
|
if (mActionListeners->Count() < 1)
|
|
{
|
|
delete mActionListeners;
|
|
mActionListeners = 0;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#pragma mark docstate listener maintainance
|
|
#pragma mark -
|
|
#endif
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::AddDocumentStateListener(nsIDocumentStateListener *aListener)
|
|
{
|
|
if (!aListener)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
if (!mDocStateListeners)
|
|
{
|
|
rv = NS_NewISupportsArray(getter_AddRefs(mDocStateListeners));
|
|
if (NS_FAILED(rv)) return rv;
|
|
}
|
|
|
|
nsCOMPtr<nsISupports> iSupports = do_QueryInterface(aListener, &rv);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
// is it already in the list?
|
|
PRInt32 foundIndex;
|
|
if (NS_SUCCEEDED(mDocStateListeners->GetIndexOf(iSupports, &foundIndex)) && foundIndex != -1)
|
|
return NS_OK;
|
|
|
|
return mDocStateListeners->AppendElement(iSupports);
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::RemoveDocumentStateListener(nsIDocumentStateListener *aListener)
|
|
{
|
|
if (!aListener || !mDocStateListeners)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsresult rv;
|
|
nsCOMPtr<nsISupports> iSupports = do_QueryInterface(aListener, &rv);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
return mDocStateListeners->RemoveElement(iSupports);
|
|
}
|
|
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#pragma mark misc
|
|
#pragma mark -
|
|
#endif
|
|
|
|
NS_IMETHODIMP nsEditor::OutputToString(nsAWritableString& aOutputString,
|
|
const nsAReadableString& aFormatType,
|
|
PRUint32 aFlags)
|
|
{
|
|
// these should be implemented by derived classes.
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::OutputToStream(nsIOutputStream* aOutputStream,
|
|
const nsAReadableString& aFormatType,
|
|
const nsAReadableString& aCharsetOverride,
|
|
PRUint32 aFlags)
|
|
{
|
|
// these should be implemented by derived classes.
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DumpContentTree()
|
|
{
|
|
nsCOMPtr<nsIContent> root = do_QueryInterface(mBodyElement);
|
|
if (root) root->List(stdout);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DebugDumpContent()
|
|
{
|
|
nsCOMPtr<nsIContent>content;
|
|
nsCOMPtr<nsIDOMNodeList>nodeList;
|
|
nsAutoString bodyTag; bodyTag.AssignWithConversion("body");
|
|
nsCOMPtr<nsIDOMDocument> doc = do_QueryReferent(mDocWeak);
|
|
if (!doc) return NS_ERROR_NOT_INITIALIZED;
|
|
doc->GetElementsByTagName(bodyTag, getter_AddRefs(nodeList));
|
|
if (nodeList)
|
|
{
|
|
PRUint32 count;
|
|
nodeList->GetLength(&count);
|
|
NS_ASSERTION(1==count, "there is not exactly 1 body in the document!");
|
|
nsCOMPtr<nsIDOMNode>bodyNode;
|
|
nodeList->Item(0, getter_AddRefs(bodyNode));
|
|
if (bodyNode) {
|
|
content = do_QueryInterface(bodyNode);
|
|
}
|
|
}
|
|
content->List();
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DebugUnitTests(PRInt32 *outNumTests, PRInt32 *outNumTestsFailed)
|
|
{
|
|
NS_NOTREACHED("This should never get called. Overridden by subclasses");
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#pragma mark support for selection preservation
|
|
#pragma mark -
|
|
#endif
|
|
|
|
PRBool
|
|
nsEditor::ArePreservingSelection()
|
|
{
|
|
if (mSavedSel.IsEmpty()) return PR_FALSE;
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::PreserveSelectionAcrossActions(nsISelection *aSel)
|
|
{
|
|
mSavedSel.SaveSelection(aSel);
|
|
mRangeUpdater.RegisterSelectionState(mSavedSel);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::RestorePreservedSelection(nsISelection *aSel)
|
|
{
|
|
if (mSavedSel.IsEmpty()) return NS_ERROR_FAILURE;
|
|
mSavedSel.RestoreSelection(aSel);
|
|
StopPreservingSelection();
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsEditor::StopPreservingSelection()
|
|
{
|
|
mRangeUpdater.DropSelectionState(mSavedSel);
|
|
mSavedSel.MakeEmpty();
|
|
}
|
|
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#pragma mark nsIEditorIMESupport
|
|
#pragma mark -
|
|
#endif
|
|
|
|
//
|
|
// The BeingComposition method is called from the Editor Composition event listeners.
|
|
//
|
|
NS_IMETHODIMP
|
|
nsEditor::QueryComposition(nsTextEventReply* aReply)
|
|
{
|
|
nsresult result;
|
|
nsCOMPtr<nsISelection> selection;
|
|
nsCOMPtr<nsISelectionController> selcon = do_QueryReferent(mSelConWeak);
|
|
if (selcon)
|
|
selcon->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(selection));
|
|
|
|
nsCOMPtr<nsIDOMCharacterData> nodeAsText;
|
|
nsCOMPtr<nsICaret> caretP;
|
|
if (!mPresShellWeak) return NS_ERROR_NOT_INITIALIZED;
|
|
nsCOMPtr<nsIPresShell> ps = do_QueryReferent(mPresShellWeak);
|
|
if (!ps) return NS_ERROR_NOT_INITIALIZED;
|
|
result = ps->GetCaret(getter_AddRefs(caretP));
|
|
|
|
if (NS_SUCCEEDED(result) && caretP) {
|
|
if (aReply) {
|
|
caretP->SetCaretDOMSelection(selection);
|
|
result = caretP->GetCaretCoordinates(nsICaret::eTopLevelWindowCoordinates, selection,
|
|
&(aReply->mCursorPosition), &(aReply->mCursorIsCollapsed));
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
NS_IMETHODIMP
|
|
nsEditor::BeginComposition(nsTextEventReply* aReply)
|
|
{
|
|
#ifdef DEBUG_tague
|
|
printf("nsEditor::StartComposition\n");
|
|
#endif
|
|
nsresult ret = QueryComposition(aReply);
|
|
mInIMEMode = PR_TRUE;
|
|
return ret;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::EndComposition(void)
|
|
{
|
|
if (!mInIMEMode) return NS_OK; // nothing to do
|
|
|
|
nsresult result = NS_OK;
|
|
|
|
// 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 (mTxnMgr)
|
|
{
|
|
nsCOMPtr<nsITransaction> txn;
|
|
result = mTxnMgr->PeekUndoStack(getter_AddRefs(txn));
|
|
nsCOMPtr<nsIAbsorbingTransaction> plcTxn = do_QueryInterface(txn);
|
|
if (plcTxn)
|
|
{
|
|
result = plcTxn->Commit();
|
|
}
|
|
}
|
|
|
|
/* reset the data we need to construct a transaction */
|
|
mIMETextNode = do_QueryInterface(nsnull);
|
|
mIMETextOffset = 0;
|
|
mIMEBufferLength = 0;
|
|
mInIMEMode = PR_FALSE;
|
|
|
|
// notify editor observers of action
|
|
NotifyEditorObservers();
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::SetCompositionString(const nsAReadableString& aCompositionString, nsIPrivateTextRangeList* aTextRangeList,nsTextEventReply* aReply)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
static nsresult
|
|
GetEditorContentWindow(nsIPresShell *aPresShell, nsIDOMElement *aRoot, nsIWidget **aResult)
|
|
{
|
|
if (!aPresShell || !aRoot || !aResult)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aResult = 0;
|
|
|
|
nsresult result;
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aRoot);
|
|
|
|
if (!content)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsIFrame *frame = 0; // Not ref counted
|
|
|
|
result = aPresShell->GetPrimaryFrameFor(content, &frame);
|
|
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
if (!frame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIPresContext> presContext;
|
|
|
|
result = aPresShell->GetPresContext(getter_AddRefs(presContext));
|
|
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
if (!presContext)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
// Check first to see if this frame contains a view with a native widget.
|
|
|
|
nsIView *view = 0; // Not ref counted
|
|
|
|
result = frame->GetView(presContext, &view);
|
|
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
if (view)
|
|
{
|
|
result = view->GetWidget(*aResult);
|
|
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
if (*aResult)
|
|
return NS_OK;
|
|
}
|
|
|
|
// frame doesn't have a view with a widget, so call GetWindow()
|
|
// which will traverse it's parent hierarchy till it finds a
|
|
// view with a widget.
|
|
|
|
result = frame->GetWindow(presContext, aResult);
|
|
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
if (!*aResult)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::ForceCompositionEnd()
|
|
{
|
|
|
|
// We can test mInIMEMode and do some optimization for Mac and Window
|
|
// Howerver, since UNIX support over-the-spot, we cannot rely on that
|
|
// flag for Unix.
|
|
// We should use nsILookAndFeel to resolve this
|
|
|
|
#if defined(XP_MAC) || defined(XP_PC)
|
|
if(! mInIMEMode)
|
|
return NS_OK;
|
|
#endif
|
|
|
|
#ifdef XP_UNIX
|
|
if(mFlags & nsIPlaintextEditor::eEditorPasswordMask)
|
|
return NS_OK;
|
|
#endif
|
|
|
|
nsresult res = NS_OK;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
|
|
res = GetPresShell(getter_AddRefs(shell));
|
|
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
|
|
if (!shell)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIWidget> widget;
|
|
|
|
res = GetEditorContentWindow(shell, mBodyElement, getter_AddRefs(widget));
|
|
|
|
if (NS_FAILED(res))
|
|
return res;
|
|
|
|
if (!widget)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIKBStateControl> kb = do_QueryInterface(widget);
|
|
|
|
if(kb)
|
|
res = kb->ResetInputState();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::GetReconversionString(nsReconversionEventReply* aReply)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#pragma mark public nsEditor methods
|
|
#pragma mark -
|
|
#endif
|
|
/* Non-interface, public methods */
|
|
|
|
|
|
// This seems like too much work! There should be a "nsDOMDocument::GetBody()"
|
|
// Have a look in nsHTMLDocument. Maybe add it to nsIHTMLDocument.
|
|
NS_IMETHODIMP
|
|
nsEditor::GetRootElement(nsIDOMElement **aBodyElement)
|
|
{
|
|
nsresult result = NS_OK;
|
|
|
|
if (!aBodyElement)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aBodyElement = 0;
|
|
|
|
if (mBodyElement)
|
|
{
|
|
// if we have cached the body element, use that
|
|
*aBodyElement = mBodyElement;
|
|
NS_ADDREF(*aBodyElement);
|
|
return result;
|
|
}
|
|
|
|
NS_PRECONDITION(mDocWeak, "bad state, null mDocWeak");
|
|
if (!mDocWeak)
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
|
|
nsCOMPtr<nsIDOMNodeList>nodeList;
|
|
nsAutoString bodyTag; bodyTag.AssignWithConversion("body");
|
|
|
|
nsCOMPtr<nsIDOMDocument> doc = do_QueryReferent(mDocWeak);
|
|
if (!doc) return NS_ERROR_NOT_INITIALIZED;
|
|
result = doc->GetElementsByTagName(bodyTag, getter_AddRefs(nodeList));
|
|
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
if (!nodeList)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
PRUint32 count;
|
|
nodeList->GetLength(&count);
|
|
|
|
if (count < 1)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
// Use the first body node in the list:
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
result = nodeList->Item(0, getter_AddRefs(node));
|
|
if (NS_SUCCEEDED(result) && node)
|
|
{
|
|
//return node->QueryInterface(NS_GET_IID(nsIDOMElement), (void **)aBodyElement);
|
|
// Is above equivalent to this:
|
|
nsCOMPtr<nsIDOMElement> bodyElement = do_QueryInterface(node);
|
|
if (bodyElement)
|
|
{
|
|
mBodyElement = do_QueryInterface(bodyElement);
|
|
*aBodyElement = bodyElement;
|
|
// A "getter" method should always addref
|
|
NS_ADDREF(*aBodyElement);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
/** All editor operations which alter the doc should be prefaced
|
|
* with a call to StartOperation, naming the action and direction */
|
|
NS_IMETHODIMP
|
|
nsEditor::StartOperation(PRInt32 opID, nsIEditor::EDirection aDirection)
|
|
{
|
|
mAction = opID;
|
|
mDirection = aDirection;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/** All editor operations which alter the doc should be followed
|
|
* with a call to EndOperation */
|
|
NS_IMETHODIMP
|
|
nsEditor::EndOperation()
|
|
{
|
|
mAction = nsnull;
|
|
mDirection = eNone;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
// Objects must be DOM elements
|
|
NS_IMETHODIMP
|
|
nsEditor::CloneAttributes(nsIDOMNode *aDestNode, nsIDOMNode *aSourceNode)
|
|
{
|
|
nsresult result=NS_OK;
|
|
|
|
if (!aDestNode || !aSourceNode)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIDOMElement> destElement = do_QueryInterface(aDestNode);
|
|
nsCOMPtr<nsIDOMElement> sourceElement = do_QueryInterface(aSourceNode);
|
|
if (!destElement || !sourceElement)
|
|
return NS_ERROR_NO_INTERFACE;
|
|
|
|
nsAutoString name;
|
|
nsAutoString value;
|
|
nsCOMPtr<nsIDOMNamedNodeMap> sourceAttributes;
|
|
sourceElement->GetAttributes(getter_AddRefs(sourceAttributes));
|
|
nsCOMPtr<nsIDOMNamedNodeMap> destAttributes;
|
|
destElement->GetAttributes(getter_AddRefs(destAttributes));
|
|
if (!sourceAttributes || !destAttributes)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsAutoEditBatch beginBatching(this);
|
|
|
|
// Use transaction system for undo only if destination
|
|
// is already in the document
|
|
PRBool destInBody = PR_TRUE;
|
|
nsCOMPtr<nsIDOMElement> bodyElement;
|
|
nsresult res = GetRootElement(getter_AddRefs(bodyElement));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!bodyElement) return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIDOMNode> bodyNode = do_QueryInterface(bodyElement);
|
|
nsCOMPtr<nsIDOMNode> p = aDestNode;
|
|
while (p && p!= bodyNode)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> tmp;
|
|
if (NS_FAILED(p->GetParentNode(getter_AddRefs(tmp))) || !tmp)
|
|
{
|
|
destInBody = PR_FALSE;
|
|
break;
|
|
}
|
|
p = tmp;
|
|
}
|
|
|
|
PRUint32 sourceCount;
|
|
sourceAttributes->GetLength(&sourceCount);
|
|
PRUint32 i, destCount;
|
|
destAttributes->GetLength(&destCount);
|
|
nsIDOMNode* attrNode;
|
|
|
|
// Clear existing attributes
|
|
for (i = 0; i < destCount; i++)
|
|
{
|
|
// always remove item number 0 (first item in list)
|
|
if( NS_SUCCEEDED(destAttributes->Item(0, &attrNode)) && attrNode)
|
|
{
|
|
nsCOMPtr<nsIDOMAttr> destAttribute = do_QueryInterface(attrNode);
|
|
if (destAttribute)
|
|
{
|
|
nsAutoString str;
|
|
if (NS_SUCCEEDED(destAttribute->GetName(str)))
|
|
{
|
|
if (destInBody)
|
|
RemoveAttribute(destElement, str);
|
|
else
|
|
destElement->RemoveAttribute(str);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Set just the attributes that the source element has
|
|
for (i = 0; i < sourceCount; i++)
|
|
{
|
|
if( NS_SUCCEEDED(sourceAttributes->Item(i, &attrNode)) && attrNode)
|
|
{
|
|
nsCOMPtr<nsIDOMAttr> sourceAttribute = do_QueryInterface(attrNode);
|
|
if (sourceAttribute)
|
|
{
|
|
nsAutoString sourceAttrName;
|
|
if (NS_SUCCEEDED(sourceAttribute->GetName(sourceAttrName)))
|
|
{
|
|
nsAutoString sourceAttrValue;
|
|
/*
|
|
Presence of an attribute in the named node map indicates that it was set on the
|
|
element even if it has no value.
|
|
*/
|
|
if (NS_SUCCEEDED(sourceAttribute->GetValue(sourceAttrValue)))
|
|
{
|
|
if (destInBody)
|
|
SetAttribute(destElement, sourceAttrName, sourceAttrValue);
|
|
else
|
|
destElement->SetAttribute(sourceAttrName, sourceAttrValue);
|
|
} else {
|
|
// Do we ever get here?
|
|
#if DEBUG_cmanske
|
|
printf("Attribute in sourceAttribute has empty value in nsEditor::CloneAttributes()\n");
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#pragma mark Protected and static methods
|
|
#pragma mark -
|
|
#endif
|
|
|
|
NS_IMETHODIMP nsEditor::ScrollIntoView(PRBool aScrollToBegin)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
/** static helper method */
|
|
nsresult nsEditor::GetTextNodeTag(nsAWritableString& aOutString)
|
|
{
|
|
aOutString.SetLength(0);
|
|
static nsString *gTextNodeTag=nsnull;
|
|
if (!gTextNodeTag)
|
|
{
|
|
if ( (gTextNodeTag = new nsString) == 0 )
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
gTextNodeTag->AssignWithConversion("special text node tag");
|
|
}
|
|
aOutString = *gTextNodeTag;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::InsertTextImpl(const nsAReadableString& aStringToInsert,
|
|
nsCOMPtr<nsIDOMNode> *aInOutNode,
|
|
PRInt32 *aInOutOffset,
|
|
nsIDOMDocument *aDoc)
|
|
{
|
|
// NOTE: caller *must* have already used nsAutoTxnsConserveSelection stack-based
|
|
// class to turn off txn selection updating. Caller also turned on rules sniffing
|
|
// if desired.
|
|
|
|
if (!aInOutNode || !*aInOutNode || !aInOutOffset || !aDoc) return NS_ERROR_NULL_POINTER;
|
|
if (!mInIMEMode && aStringToInsert.IsEmpty()) return NS_OK;
|
|
nsCOMPtr<nsIDOMText> nodeAsText = do_QueryInterface(*aInOutNode);
|
|
PRInt32 offset = *aInOutOffset;
|
|
nsresult res;
|
|
if (mInIMEMode)
|
|
{
|
|
if (!nodeAsText)
|
|
{
|
|
// create a text node
|
|
nsCOMPtr<nsIDOMNode> newNode;
|
|
res = aDoc->CreateTextNode(nsAutoString(), getter_AddRefs(nodeAsText));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!nodeAsText) return NS_ERROR_NULL_POINTER;
|
|
newNode = do_QueryInterface(nodeAsText);
|
|
// then we insert it into the dom tree
|
|
res = InsertNode(newNode, *aInOutNode, offset);
|
|
if (NS_FAILED(res)) return res;
|
|
offset = 0;
|
|
}
|
|
res = InsertTextIntoTextNodeImpl(aStringToInsert, nodeAsText, offset);
|
|
if (NS_FAILED(res)) return res;
|
|
}
|
|
else
|
|
{
|
|
if (nodeAsText)
|
|
{
|
|
// we are inserting text into an existing text node.
|
|
res = InsertTextIntoTextNodeImpl(aStringToInsert, nodeAsText, offset);
|
|
if (NS_FAILED(res)) return res;
|
|
*aInOutOffset += aStringToInsert.Length();
|
|
}
|
|
else
|
|
{
|
|
nsCOMPtr<nsIDOMNode> newNode;
|
|
// we are inserting text into a non-text node
|
|
// first we have to create a textnode (this also populates it with the text)
|
|
res = aDoc->CreateTextNode(aStringToInsert, getter_AddRefs(nodeAsText));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!nodeAsText) return NS_ERROR_NULL_POINTER;
|
|
newNode = do_QueryInterface(nodeAsText);
|
|
// then we insert it into the dom tree
|
|
res = InsertNode(newNode, *aInOutNode, offset);
|
|
if (NS_FAILED(res)) return res;
|
|
*aInOutNode = newNode;
|
|
*aInOutOffset = aStringToInsert.Length();
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::InsertTextIntoTextNodeImpl(const nsAReadableString& aStringToInsert,
|
|
nsIDOMCharacterData *aTextNode,
|
|
PRInt32 aOffset)
|
|
{
|
|
EditTxn *txn;
|
|
nsresult result;
|
|
if (mInIMEMode)
|
|
{
|
|
if (!mIMETextNode)
|
|
{
|
|
mIMETextNode = aTextNode;
|
|
mIMETextOffset = aOffset;
|
|
}
|
|
result = CreateTxnForIMEText(aStringToInsert, (IMETextTxn**)&txn);
|
|
}
|
|
else
|
|
{
|
|
result = CreateTxnForInsertText(aStringToInsert, aTextNode, aOffset, (InsertTextTxn**)&txn);
|
|
}
|
|
if (NS_FAILED(result)) return result; // we potentially leak txn here?
|
|
|
|
// let listeners know whats up
|
|
PRInt32 i;
|
|
nsIEditActionListener *listener;
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->WillInsertText(aTextNode, aOffset, aStringToInsert);
|
|
}
|
|
}
|
|
|
|
BeginUpdateViewBatch();
|
|
result = Do(txn);
|
|
EndUpdateViewBatch();
|
|
|
|
// let listeners know what happened
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->DidInsertText(aTextNode, aOffset, aStringToInsert, result);
|
|
}
|
|
}
|
|
|
|
// Added some cruft here for bug 43366. Layout was crashing because we left an
|
|
// empty text node lying around in the document. So I delete empty text nodes
|
|
// caused by IME. I have to mark the IME transaction as "fixed", which means
|
|
// that furure ime txns won't merge with it. This is because we don't want
|
|
// future ime txns trying to put their text into a node that is no longer in
|
|
// the document. This does not break undo/redo, because all these txns are
|
|
// wrapped in a parent PlaceHolder txn, and placeholder txns are already
|
|
// savvy to having multiple ime txns inside them.
|
|
|
|
// delete empty ime text node if there is one
|
|
if (mInIMEMode && mIMETextNode)
|
|
{
|
|
PRUint32 len;
|
|
mIMETextNode->GetLength(&len);
|
|
if (!len)
|
|
{
|
|
DeleteNode(mIMETextNode);
|
|
mIMETextNode = nsnull;
|
|
((IMETextTxn*)txn)->MarkFixed(); // mark the ime txn "fixed"
|
|
}
|
|
}
|
|
|
|
// The transaction system (if any) has taken ownwership of txns.
|
|
// aggTxn released at end of routine.
|
|
NS_IF_RELEASE(txn);
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::SelectEntireDocument(nsISelection *aSelection)
|
|
{
|
|
nsresult result;
|
|
if (!aSelection) { return NS_ERROR_NULL_POINTER; }
|
|
nsCOMPtr<nsIDOMElement>bodyElement;
|
|
result = GetRootElement(getter_AddRefs(bodyElement));
|
|
if ((NS_SUCCEEDED(result)) && bodyElement)
|
|
{
|
|
nsCOMPtr<nsIDOMNode>bodyNode = do_QueryInterface(bodyElement);
|
|
if (bodyNode)
|
|
{
|
|
result = aSelection->SelectAllChildren(bodyNode);
|
|
}
|
|
else {
|
|
return NS_ERROR_NO_INTERFACE;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
nsresult nsEditor::GetFirstEditableNode(nsIDOMNode *aRoot, nsCOMPtr<nsIDOMNode> *outFirstNode)
|
|
{
|
|
if (!aRoot || !outFirstNode) return NS_ERROR_NULL_POINTER;
|
|
|
|
*outFirstNode = nsnull;
|
|
|
|
nsCOMPtr<nsIDOMNode> node,next;
|
|
nsresult rv = GetLeftmostChild(aRoot, getter_AddRefs(node));
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
if (node && !IsEditable(node))
|
|
{
|
|
rv = GetNextNode(node, PR_TRUE, getter_AddRefs(next));
|
|
node = next;
|
|
}
|
|
|
|
if (node.get() != aRoot) *outFirstNode = node;
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
nsresult nsEditor::GetLastEditableNode(nsIDOMNode *aRoot, nsCOMPtr<nsIDOMNode> *outLastNode)
|
|
{
|
|
if (!aRoot || !outLastNode) return NS_ERROR_NULL_POINTER;
|
|
|
|
*outLastNode = nsnull;
|
|
|
|
nsCOMPtr<nsIDOMNode> node,next;
|
|
nsresult rv = GetRightmostChild(aRoot, getter_AddRefs(node));
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
if (node && !IsEditable(node))
|
|
{
|
|
rv = GetPriorNode(node, PR_TRUE, getter_AddRefs(next));
|
|
node = next;
|
|
}
|
|
|
|
if (node.get() != aRoot) *outLastNode = node;
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::NotifyDocumentListeners(TDocumentListenerNotification aNotificationType)
|
|
{
|
|
if (!mDocStateListeners)
|
|
return NS_OK; // maybe there just aren't any.
|
|
|
|
PRUint32 numListeners;
|
|
nsresult rv = mDocStateListeners->Count(&numListeners);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
PRUint32 i;
|
|
switch (aNotificationType)
|
|
{
|
|
case eDocumentCreated:
|
|
for (i = 0; i < numListeners;i++)
|
|
{
|
|
nsCOMPtr<nsISupports> iSupports = getter_AddRefs(mDocStateListeners->ElementAt(i));
|
|
nsCOMPtr<nsIDocumentStateListener> thisListener = do_QueryInterface(iSupports);
|
|
if (thisListener)
|
|
{
|
|
rv = thisListener->NotifyDocumentCreated();
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case eDocumentToBeDestroyed:
|
|
for (i = 0; i < numListeners;i++)
|
|
{
|
|
nsCOMPtr<nsISupports> iSupports = getter_AddRefs(mDocStateListeners->ElementAt(i));
|
|
nsCOMPtr<nsIDocumentStateListener> thisListener = do_QueryInterface(iSupports);
|
|
if (thisListener)
|
|
{
|
|
rv = thisListener->NotifyDocumentWillBeDestroyed();
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case eDocumentStateChanged:
|
|
{
|
|
PRBool docIsDirty;
|
|
rv = GetDocumentModified(&docIsDirty);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
if (docIsDirty == mDocDirtyState)
|
|
return NS_OK;
|
|
|
|
mDocDirtyState = (PRInt8)docIsDirty;
|
|
|
|
for (i = 0; i < numListeners;i++)
|
|
{
|
|
nsCOMPtr<nsISupports> iSupports = getter_AddRefs(mDocStateListeners->ElementAt(i));
|
|
nsCOMPtr<nsIDocumentStateListener> thisListener = do_QueryInterface(iSupports);
|
|
if (thisListener)
|
|
{
|
|
rv = thisListener->NotifyDocumentStateChanged(mDocDirtyState);
|
|
if (NS_FAILED(rv))
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
NS_NOTREACHED("Unknown notification");
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForInsertText(const nsAReadableString & aStringToInsert,
|
|
nsIDOMCharacterData *aTextNode,
|
|
PRInt32 aOffset,
|
|
InsertTextTxn ** aTxn)
|
|
{
|
|
if (!aTextNode || !aTxn) return NS_ERROR_NULL_POINTER;
|
|
nsresult result;
|
|
|
|
result = TransactionFactory::GetNewTransaction(InsertTextTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (NS_FAILED(result)) return result;
|
|
if (!*aTxn) return NS_ERROR_OUT_OF_MEMORY;
|
|
result = (*aTxn)->Init(aTextNode, aOffset, aStringToInsert, this);
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::DeleteText(nsIDOMCharacterData *aElement,
|
|
PRUint32 aOffset,
|
|
PRUint32 aLength)
|
|
{
|
|
DeleteTextTxn *txn;
|
|
nsresult result = CreateTxnForDeleteText(aElement, aOffset, aLength, &txn);
|
|
nsAutoRules beginRulesSniffing(this, kOpDeleteText, nsIEditor::ePrevious);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
// let listeners know whats up
|
|
PRInt32 i;
|
|
nsIEditActionListener *listener;
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->WillDeleteText(aElement, aOffset, aLength);
|
|
}
|
|
}
|
|
|
|
result = Do(txn);
|
|
|
|
// let listeners know what happened
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->DidDeleteText(aElement, aOffset, aLength, result);
|
|
}
|
|
}
|
|
}
|
|
// The transaction system (if any) has taken ownwership of txn
|
|
NS_IF_RELEASE(txn);
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForDeleteText(nsIDOMCharacterData *aElement,
|
|
PRUint32 aOffset,
|
|
PRUint32 aLength,
|
|
DeleteTextTxn **aTxn)
|
|
{
|
|
nsresult result=NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aElement)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(DeleteTextTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aElement, aOffset, aLength);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForSplitNode(nsIDOMNode *aNode,
|
|
PRUint32 aOffset,
|
|
SplitElementTxn **aTxn)
|
|
{
|
|
nsresult result=NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aNode)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(SplitElementTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aNode, aOffset);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForJoinNode(nsIDOMNode *aLeftNode,
|
|
nsIDOMNode *aRightNode,
|
|
JoinElementTxn **aTxn)
|
|
{
|
|
nsresult result=NS_ERROR_NULL_POINTER;
|
|
if ((nsnull != aLeftNode) && (nsnull != aRightNode))
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(JoinElementTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aLeftNode, aRightNode);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
// END nsEditor core implementation
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#pragma mark nsEditor public static helper methods
|
|
#pragma mark -
|
|
#endif
|
|
|
|
// BEGIN nsEditor public helper methods
|
|
|
|
nsresult
|
|
nsEditor::SplitNodeImpl(nsIDOMNode * aExistingRightNode,
|
|
PRInt32 aOffset,
|
|
nsIDOMNode* aNewLeftNode,
|
|
nsIDOMNode* aParent)
|
|
{
|
|
|
|
if (gNoisy) { printf("SplitNodeImpl: left=%p, right=%p, offset=%d\n", (void*)aNewLeftNode, (void*)aExistingRightNode, aOffset); }
|
|
|
|
nsresult result;
|
|
NS_ASSERTION(((nsnull!=aExistingRightNode) &&
|
|
(nsnull!=aNewLeftNode) &&
|
|
(nsnull!=aParent)),
|
|
"null arg");
|
|
if ((nsnull!=aExistingRightNode) &&
|
|
(nsnull!=aNewLeftNode) &&
|
|
(nsnull!=aParent))
|
|
{
|
|
// get selection
|
|
nsCOMPtr<nsISelection> selection;
|
|
result = GetSelection(getter_AddRefs(selection));
|
|
if (NS_FAILED(result)) return result;
|
|
if (!selection) return NS_ERROR_NULL_POINTER;
|
|
|
|
// remember some selection points
|
|
nsCOMPtr<nsIDOMNode> selStartNode, selEndNode;
|
|
PRInt32 selStartOffset, selEndOffset;
|
|
result = GetStartNodeAndOffset(selection, address_of(selStartNode), &selStartOffset);
|
|
if (NS_FAILED(result)) selStartNode = nsnull; // if selection is cleared, remember that
|
|
result = GetEndNodeAndOffset(selection, address_of(selEndNode), &selEndOffset);
|
|
if (NS_FAILED(result)) selStartNode = nsnull; // if selection is cleared, remember that
|
|
|
|
nsCOMPtr<nsIDOMNode> resultNode;
|
|
result = aParent->InsertBefore(aNewLeftNode, aExistingRightNode, getter_AddRefs(resultNode));
|
|
//printf(" after insert\n"); content->List(); // DEBUG
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
// split the children between the 2 nodes
|
|
// at this point, aExistingRightNode has all the children
|
|
// move all the children whose index is < aOffset to aNewLeftNode
|
|
if (0<=aOffset) // don't bother unless we're going to move at least one child
|
|
{
|
|
// if it's a text node, just shuffle around some text
|
|
nsCOMPtr<nsIDOMCharacterData> rightNodeAsText( do_QueryInterface(aExistingRightNode) );
|
|
nsCOMPtr<nsIDOMCharacterData> leftNodeAsText( do_QueryInterface(aNewLeftNode) );
|
|
if (leftNodeAsText && rightNodeAsText)
|
|
{
|
|
// fix right node
|
|
nsAutoString leftText;
|
|
rightNodeAsText->SubstringData(0, aOffset, leftText);
|
|
rightNodeAsText->DeleteData(0, aOffset);
|
|
// fix left node
|
|
leftNodeAsText->SetData(leftText);
|
|
// moose
|
|
}
|
|
else
|
|
{ // otherwise it's an interior node, so shuffle around the children
|
|
// go through list backwards so deletes don't interfere with the iteration
|
|
nsCOMPtr<nsIDOMNodeList> childNodes;
|
|
result = aExistingRightNode->GetChildNodes(getter_AddRefs(childNodes));
|
|
if ((NS_SUCCEEDED(result)) && (childNodes))
|
|
{
|
|
PRInt32 i=aOffset-1;
|
|
for ( ; ((NS_SUCCEEDED(result)) && (0<=i)); i--)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> childNode;
|
|
result = childNodes->Item(i, getter_AddRefs(childNode));
|
|
if ((NS_SUCCEEDED(result)) && (childNode))
|
|
{
|
|
result = aExistingRightNode->RemoveChild(childNode, getter_AddRefs(resultNode));
|
|
//printf(" after remove\n"); content->List(); // DEBUG
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
nsCOMPtr<nsIDOMNode> firstChild;
|
|
aNewLeftNode->GetFirstChild(getter_AddRefs(firstChild));
|
|
result = aNewLeftNode->InsertBefore(childNode, firstChild, getter_AddRefs(resultNode));
|
|
//printf(" after append\n"); content->List(); // DEBUG
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// handle selection
|
|
if (GetShouldTxnSetSelection())
|
|
{
|
|
// editor wants us to set selection at split point
|
|
selection->Collapse(aNewLeftNode, aOffset);
|
|
}
|
|
else if (selStartNode)
|
|
{
|
|
// else adjust the selection if needed. if selStartNode is null, then there was no selection.
|
|
// HACK: this is overly simplified - multi-range selections need more work than this
|
|
if (selStartNode.get() == aExistingRightNode)
|
|
{
|
|
if (selStartOffset < aOffset)
|
|
{
|
|
selStartNode = aNewLeftNode;
|
|
}
|
|
else
|
|
{
|
|
selStartOffset -= aOffset;
|
|
}
|
|
}
|
|
if (selEndNode.get() == aExistingRightNode)
|
|
{
|
|
if (selEndOffset < aOffset)
|
|
{
|
|
selEndNode = aNewLeftNode;
|
|
}
|
|
else
|
|
{
|
|
selEndOffset -= aOffset;
|
|
}
|
|
}
|
|
selection->Collapse(selStartNode,selStartOffset);
|
|
selection->Extend(selEndNode,selEndOffset);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
result = NS_ERROR_INVALID_ARG;
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::JoinNodesImpl(nsIDOMNode * aNodeToKeep,
|
|
nsIDOMNode * aNodeToJoin,
|
|
nsIDOMNode * aParent,
|
|
PRBool aNodeToKeepIsFirst)
|
|
{
|
|
nsresult result = NS_OK;
|
|
NS_ASSERTION(aNodeToKeep && aNodeToJoin && aParent, "null arg");
|
|
if (aNodeToKeep && aNodeToJoin && aParent)
|
|
{
|
|
// get selection
|
|
nsCOMPtr<nsISelection> selection;
|
|
GetSelection(getter_AddRefs(selection));
|
|
if (NS_FAILED(result)) return result;
|
|
if (!selection) return NS_ERROR_NULL_POINTER;
|
|
|
|
// remember some selection points
|
|
nsCOMPtr<nsIDOMNode> selStartNode, selEndNode, parent;
|
|
PRInt32 selStartOffset, selEndOffset, joinOffset, keepOffset;
|
|
result = GetStartNodeAndOffset(selection, address_of(selStartNode), &selStartOffset);
|
|
if (NS_FAILED(result)) selStartNode = nsnull;
|
|
result = GetEndNodeAndOffset(selection, address_of(selEndNode), &selEndOffset);
|
|
if (NS_FAILED(result)) selStartNode = nsnull;
|
|
|
|
|
|
PRUint32 firstNodeLength;
|
|
nsCOMPtr<nsIDOMNode> leftNode = aNodeToJoin;
|
|
if (aNodeToKeepIsFirst) leftNode = aNodeToKeep;
|
|
result = GetLengthOfDOMNode(leftNode, firstNodeLength);
|
|
if (NS_FAILED(result)) return result;
|
|
result = GetNodeLocation(aNodeToJoin, address_of(parent), &joinOffset);
|
|
if (NS_FAILED(result)) return result;
|
|
result = GetNodeLocation(aNodeToKeep, address_of(parent), &keepOffset);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
// if selection endpoint is between the nodes, remember it as being
|
|
// in the one that is going away instead. This simplifies later selection
|
|
// adjustment logic at end of this method.
|
|
if (selStartNode)
|
|
{
|
|
if (selStartNode == parent)
|
|
{
|
|
if (aNodeToKeepIsFirst)
|
|
{
|
|
if ((selStartOffset > keepOffset) && (selStartOffset <= joinOffset))
|
|
{
|
|
selStartNode = aNodeToJoin;
|
|
selStartOffset = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ((selStartOffset > joinOffset) && (selStartOffset <= keepOffset))
|
|
{
|
|
selStartNode = aNodeToJoin;
|
|
selStartOffset = firstNodeLength;
|
|
}
|
|
}
|
|
}
|
|
if (selEndNode == parent)
|
|
{
|
|
if (aNodeToKeepIsFirst)
|
|
{
|
|
if ((selEndOffset > keepOffset) && (selEndOffset <= joinOffset))
|
|
{
|
|
selEndNode = aNodeToJoin;
|
|
selEndOffset = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ((selEndOffset > joinOffset) && (selEndOffset <= keepOffset))
|
|
{
|
|
selEndNode = aNodeToJoin;
|
|
selEndOffset = firstNodeLength;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// ok, ready to do join now.
|
|
// if it's a text node, just shuffle around some text
|
|
nsCOMPtr<nsIDOMCharacterData> keepNodeAsText( do_QueryInterface(aNodeToKeep) );
|
|
nsCOMPtr<nsIDOMCharacterData> joinNodeAsText( do_QueryInterface(aNodeToJoin) );
|
|
if (keepNodeAsText && joinNodeAsText)
|
|
{
|
|
nsAutoString rightText;
|
|
nsAutoString leftText;
|
|
if (aNodeToKeepIsFirst)
|
|
{
|
|
keepNodeAsText->GetData(leftText);
|
|
joinNodeAsText->GetData(rightText);
|
|
}
|
|
else
|
|
{
|
|
keepNodeAsText->GetData(rightText);
|
|
joinNodeAsText->GetData(leftText);
|
|
}
|
|
leftText += rightText;
|
|
keepNodeAsText->SetData(leftText);
|
|
}
|
|
else
|
|
{ // otherwise it's an interior node, so shuffle around the children
|
|
nsCOMPtr<nsIDOMNodeList> childNodes;
|
|
result = aNodeToJoin->GetChildNodes(getter_AddRefs(childNodes));
|
|
if ((NS_SUCCEEDED(result)) && (childNodes))
|
|
{
|
|
PRInt32 i; // must be signed int!
|
|
PRUint32 childCount=0;
|
|
nsCOMPtr<nsIDOMNode> firstNode; //only used if aNodeToKeepIsFirst is false
|
|
childNodes->GetLength(&childCount);
|
|
if (!aNodeToKeepIsFirst)
|
|
{ // remember the first child in aNodeToKeep, we'll insert all the children of aNodeToJoin in front of it
|
|
result = aNodeToKeep->GetFirstChild(getter_AddRefs(firstNode));
|
|
// GetFirstChild returns nsnull firstNode if aNodeToKeep has no children, that's ok.
|
|
}
|
|
nsCOMPtr<nsIDOMNode> resultNode;
|
|
// have to go through the list backwards to keep deletes from interfering with iteration
|
|
nsCOMPtr<nsIDOMNode> previousChild;
|
|
for (i=childCount-1; ((NS_SUCCEEDED(result)) && (0<=i)); i--)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> childNode;
|
|
result = childNodes->Item(i, getter_AddRefs(childNode));
|
|
if ((NS_SUCCEEDED(result)) && (childNode))
|
|
{
|
|
if (aNodeToKeepIsFirst)
|
|
{ // append children of aNodeToJoin
|
|
//was result = aNodeToKeep->AppendChild(childNode, getter_AddRefs(resultNode));
|
|
result = aNodeToKeep->InsertBefore(childNode, previousChild, getter_AddRefs(resultNode));
|
|
previousChild = do_QueryInterface(childNode);
|
|
}
|
|
else
|
|
{ // prepend children of aNodeToJoin
|
|
//was result = aNodeToKeep->InsertBefore(childNode, firstNode, getter_AddRefs(resultNode));
|
|
result = aNodeToKeep->InsertBefore(childNode, firstNode, getter_AddRefs(resultNode));
|
|
firstNode = do_QueryInterface(childNode);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (!childNodes) {
|
|
result = NS_ERROR_NULL_POINTER;
|
|
}
|
|
}
|
|
if (NS_SUCCEEDED(result))
|
|
{ // delete the extra node
|
|
nsCOMPtr<nsIDOMNode> resultNode;
|
|
result = aParent->RemoveChild(aNodeToJoin, getter_AddRefs(resultNode));
|
|
|
|
if (GetShouldTxnSetSelection())
|
|
{
|
|
// editor wants us to set selection at join point
|
|
selection->Collapse(aNodeToKeep, firstNodeLength);
|
|
}
|
|
else if (selStartNode)
|
|
{
|
|
// and adjust the selection if needed
|
|
// HACK: this is overly simplified - multi-range selections need more work than this
|
|
PRBool bNeedToAdjust = PR_FALSE;
|
|
|
|
// check to see if we joined nodes where selection starts
|
|
if (selStartNode.get() == aNodeToJoin)
|
|
{
|
|
bNeedToAdjust = PR_TRUE;
|
|
selStartNode = aNodeToKeep;
|
|
if (aNodeToKeepIsFirst)
|
|
{
|
|
selStartOffset += firstNodeLength;
|
|
}
|
|
}
|
|
else if ((selStartNode.get() == aNodeToKeep) && !aNodeToKeepIsFirst)
|
|
{
|
|
bNeedToAdjust = PR_TRUE;
|
|
selStartOffset += firstNodeLength;
|
|
}
|
|
|
|
// check to see if we joined nodes where selection ends
|
|
if (selEndNode.get() == aNodeToJoin)
|
|
{
|
|
bNeedToAdjust = PR_TRUE;
|
|
selEndNode = aNodeToKeep;
|
|
if (aNodeToKeepIsFirst)
|
|
{
|
|
selEndOffset += firstNodeLength;
|
|
}
|
|
}
|
|
else if ((selEndNode.get() == aNodeToKeep) && !aNodeToKeepIsFirst)
|
|
{
|
|
bNeedToAdjust = PR_TRUE;
|
|
selEndOffset += firstNodeLength;
|
|
}
|
|
|
|
// adjust selection if needed
|
|
if (bNeedToAdjust)
|
|
{
|
|
selection->Collapse(selStartNode,selStartOffset);
|
|
selection->Extend(selEndNode,selEndOffset);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
result = NS_ERROR_INVALID_ARG;
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsEditor::GetChildOffset(nsIDOMNode *aChild, nsIDOMNode *aParent, PRInt32 &aOffset)
|
|
{
|
|
NS_ASSERTION((aChild && aParent), "bad args");
|
|
if (!aChild || !aParent) return NS_ERROR_NULL_POINTER;
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aParent);
|
|
nsCOMPtr<nsIContent> cChild = do_QueryInterface(aChild);
|
|
if (!cChild || !content) return NS_ERROR_NULL_POINTER;
|
|
nsresult res = content->IndexOf(cChild, aOffset);
|
|
return res;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetNodeLocation(nsIDOMNode *inChild, nsCOMPtr<nsIDOMNode> *outParent, PRInt32 *outOffset)
|
|
{
|
|
NS_ASSERTION((inChild && outParent && outOffset), "bad args");
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (inChild && outParent && outOffset)
|
|
{
|
|
result = inChild->GetParentNode(getter_AddRefs(*outParent));
|
|
if ((NS_SUCCEEDED(result)) && (*outParent))
|
|
{
|
|
result = GetChildOffset(inChild, *outParent, *outOffset);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
// returns the number of things inside aNode.
|
|
// If aNode is text, returns number of characters. If not, returns number of children nodes.
|
|
nsresult
|
|
nsEditor::GetLengthOfDOMNode(nsIDOMNode *aNode, PRUint32 &aCount)
|
|
{
|
|
aCount = 0;
|
|
if (!aNode) { return NS_ERROR_NULL_POINTER; }
|
|
nsresult result=NS_OK;
|
|
nsCOMPtr<nsIDOMCharacterData>nodeAsChar;
|
|
nodeAsChar = do_QueryInterface(aNode);
|
|
if (nodeAsChar) {
|
|
nodeAsChar->GetLength(&aCount);
|
|
}
|
|
else
|
|
{
|
|
PRBool hasChildNodes;
|
|
aNode->HasChildNodes(&hasChildNodes);
|
|
if (PR_TRUE==hasChildNodes)
|
|
{
|
|
nsCOMPtr<nsIDOMNodeList>nodeList;
|
|
result = aNode->GetChildNodes(getter_AddRefs(nodeList));
|
|
if (NS_SUCCEEDED(result) && nodeList) {
|
|
nodeList->GetLength(&aCount);
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsEditor::GetPriorNode(nsIDOMNode *aParentNode,
|
|
PRInt32 aOffset,
|
|
PRBool aEditableNode,
|
|
nsIDOMNode **aResultNode)
|
|
{
|
|
// just another version of GetPriorNode that takes a {parent, offset}
|
|
// instead of a node
|
|
nsresult result = NS_OK;
|
|
if (!aParentNode || !aResultNode) { return NS_ERROR_NULL_POINTER; }
|
|
|
|
// if we are at beginning of node, or it is a textnode, then just look before it
|
|
if (!aOffset || IsTextNode(aParentNode))
|
|
{
|
|
return GetPriorNode(aParentNode, aEditableNode, aResultNode);
|
|
}
|
|
else
|
|
{
|
|
// else look before the child at 'aOffset'
|
|
nsCOMPtr<nsIDOMNode> child = GetChildAt(aParentNode, aOffset);
|
|
if (child)
|
|
return GetPriorNode(child, aEditableNode, aResultNode);
|
|
// unless there isn't one, in which case we are at the end of the node
|
|
// and want the deep-right child.
|
|
else
|
|
{
|
|
result = GetRightmostChild(aParentNode, aResultNode);
|
|
if (NS_FAILED(result)) return result;
|
|
if (!aEditableNode) return result;
|
|
if (IsEditable(*aResultNode)) return result;
|
|
else
|
|
{
|
|
// restart the search from the non-editable node we just found
|
|
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(*aResultNode);
|
|
NS_IF_RELEASE(*aResultNode);
|
|
return GetPriorNode(notEditableNode, aEditableNode, aResultNode);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
nsresult
|
|
nsEditor::GetNextNode(nsIDOMNode *aParentNode,
|
|
PRInt32 aOffset,
|
|
PRBool aEditableNode,
|
|
nsIDOMNode **aResultNode)
|
|
{
|
|
// just another version of GetNextNode that takes a {parent, offset}
|
|
// instead of a node
|
|
nsresult result = NS_OK;
|
|
if (!aParentNode || !aResultNode) { return NS_ERROR_NULL_POINTER; }
|
|
|
|
*aResultNode = nsnull;
|
|
|
|
// if aParentNode is a text node, use it's location instead
|
|
if (IsTextNode(aParentNode))
|
|
{
|
|
nsCOMPtr<nsIDOMNode> parent;
|
|
nsEditor::GetNodeLocation(aParentNode, address_of(parent), &aOffset);
|
|
aParentNode = parent;
|
|
aOffset++; // _after_ the text node
|
|
}
|
|
// look at the child at 'aOffset'
|
|
nsCOMPtr<nsIDOMNode> child = GetChildAt(aParentNode, aOffset);
|
|
if (child)
|
|
{
|
|
result = GetLeftmostChild(child, aResultNode);
|
|
if (NS_FAILED(result)) return result;
|
|
if (!IsDescendantOfBody(*aResultNode))
|
|
{
|
|
NS_RELEASE(*aResultNode); // assigns nsnull
|
|
return result;
|
|
}
|
|
if (!aEditableNode) return result;
|
|
if (IsEditable(*aResultNode)) return result;
|
|
else
|
|
{
|
|
// restart the search from the non-editable node we just found
|
|
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(*aResultNode);
|
|
NS_IF_RELEASE(*aResultNode);
|
|
return GetNextNode(notEditableNode, aEditableNode, aResultNode);
|
|
}
|
|
}
|
|
|
|
// unless there isn't one, in which case we are at the end of the node
|
|
// and want the next one.
|
|
else
|
|
{
|
|
return GetNextNode(aParentNode, aEditableNode, aResultNode);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
nsresult
|
|
nsEditor::GetPriorNode(nsIDOMNode *aCurrentNode,
|
|
PRBool aEditableNode,
|
|
nsIDOMNode **aResultNode)
|
|
{
|
|
nsresult result;
|
|
if (!aCurrentNode || !aResultNode) { return NS_ERROR_NULL_POINTER; }
|
|
|
|
*aResultNode = nsnull; // init out-param
|
|
|
|
// if aCurrentNode has a left sibling, return that sibling's rightmost child (or itself if it has no children)
|
|
nsCOMPtr<nsIDOMNode> prevSibling;
|
|
result = aCurrentNode->GetPreviousSibling(getter_AddRefs(prevSibling));
|
|
if ((NS_SUCCEEDED(result)) && prevSibling)
|
|
{
|
|
result = GetRightmostChild(prevSibling, aResultNode);
|
|
if (NS_FAILED(result)) { return result; }
|
|
if (!IsDescendantOfBody(*aResultNode))
|
|
{
|
|
NS_RELEASE(*aResultNode); // assigns nsnull
|
|
return result;
|
|
}
|
|
if (PR_FALSE==aEditableNode) {
|
|
return result;
|
|
}
|
|
if (PR_TRUE==IsEditable(*aResultNode)) {
|
|
return result;
|
|
}
|
|
else
|
|
{ // restart the search from the non-editable node we just found
|
|
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(*aResultNode);
|
|
NS_IF_RELEASE(*aResultNode);
|
|
return GetPriorNode(notEditableNode, aEditableNode, aResultNode);
|
|
}
|
|
}
|
|
|
|
// otherwise, walk up the parent change until there is a child that comes before
|
|
// the ancestor of aCurrentNode. Then return that node's rightmost child
|
|
nsCOMPtr<nsIDOMNode> parent = do_QueryInterface(aCurrentNode);
|
|
do {
|
|
nsCOMPtr<nsIDOMNode> node(parent);
|
|
result = node->GetParentNode(getter_AddRefs(parent));
|
|
if ((NS_SUCCEEDED(result)) && parent)
|
|
{
|
|
result = parent->GetPreviousSibling(getter_AddRefs(node));
|
|
if ((NS_SUCCEEDED(result)) && node)
|
|
{
|
|
result = GetRightmostChild(node, aResultNode);
|
|
if (NS_FAILED(result)) { return result; }
|
|
if (!IsDescendantOfBody(*aResultNode))
|
|
{
|
|
NS_RELEASE(*aResultNode); // assigns nsnull
|
|
return result;
|
|
}
|
|
if (PR_FALSE==aEditableNode) {
|
|
return result;
|
|
}
|
|
if (PR_TRUE==IsEditable(*aResultNode)) {
|
|
return result;
|
|
}
|
|
else
|
|
{ // restart the search from the non-editable node we just found
|
|
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(*aResultNode);
|
|
NS_IF_RELEASE(*aResultNode);
|
|
return GetPriorNode(notEditableNode, aEditableNode, aResultNode);
|
|
}
|
|
}
|
|
}
|
|
} while ((NS_SUCCEEDED(result)) && parent);
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetNextNode(nsIDOMNode *aCurrentNode,
|
|
PRBool aEditableNode,
|
|
nsIDOMNode **aResultNode)
|
|
{
|
|
nsresult result;
|
|
*aResultNode = nsnull;
|
|
// if aCurrentNode has a right sibling, return that sibling's leftmost child (or itself if it has no children)
|
|
nsCOMPtr<nsIDOMNode> nextSibling;
|
|
result = aCurrentNode->GetNextSibling(getter_AddRefs(nextSibling));
|
|
if ((NS_SUCCEEDED(result)) && nextSibling)
|
|
{
|
|
result = GetLeftmostChild(nextSibling, aResultNode);
|
|
if (NS_FAILED(result)) { return result; }
|
|
if (!IsDescendantOfBody(*aResultNode))
|
|
{
|
|
NS_RELEASE(*aResultNode); // assigns nsnull
|
|
return result;
|
|
}
|
|
if (PR_FALSE==aEditableNode) {
|
|
return result;
|
|
}
|
|
if (PR_TRUE==IsEditable(*aResultNode)) {
|
|
return result;
|
|
}
|
|
else
|
|
{ // restart the search from the non-editable node we just found
|
|
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(*aResultNode);
|
|
NS_IF_RELEASE(*aResultNode);
|
|
return GetNextNode(notEditableNode, aEditableNode, aResultNode);
|
|
}
|
|
}
|
|
|
|
// otherwise, walk up the parent change until there is a child that comes after
|
|
// the ancestor of aCurrentNode. Then return that node's leftmost child
|
|
|
|
nsCOMPtr<nsIDOMNode> parent(do_QueryInterface(aCurrentNode));
|
|
do {
|
|
nsCOMPtr<nsIDOMNode> node(parent);
|
|
result = node->GetParentNode(getter_AddRefs(parent));
|
|
if ((NS_SUCCEEDED(result)) && parent)
|
|
{
|
|
result = parent->GetNextSibling(getter_AddRefs(node));
|
|
if ((NS_SUCCEEDED(result)) && node)
|
|
{
|
|
result = GetLeftmostChild(node, aResultNode);
|
|
if (NS_FAILED(result)) { return result; }
|
|
if (!IsDescendantOfBody(*aResultNode))
|
|
{
|
|
NS_RELEASE(*aResultNode); // assigns nsnull
|
|
return result;
|
|
}
|
|
if (PR_FALSE==aEditableNode) {
|
|
return result;
|
|
}
|
|
if (PR_TRUE==IsEditable(*aResultNode)) {
|
|
return result;
|
|
}
|
|
else
|
|
{ // restart the search from the non-editable node we just found
|
|
nsCOMPtr<nsIDOMNode> notEditableNode = do_QueryInterface(*aResultNode);
|
|
NS_IF_RELEASE(*aResultNode);
|
|
return GetNextNode(notEditableNode, aEditableNode, aResultNode);
|
|
}
|
|
}
|
|
}
|
|
} while ((NS_SUCCEEDED(result)) && parent);
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetRightmostChild(nsIDOMNode *aCurrentNode, nsIDOMNode **aResultNode)
|
|
{
|
|
nsresult result = NS_OK;
|
|
nsCOMPtr<nsIDOMNode> resultNode(do_QueryInterface(aCurrentNode));
|
|
PRBool hasChildren;
|
|
resultNode->HasChildNodes(&hasChildren);
|
|
while ((NS_SUCCEEDED(result)) && (PR_TRUE==hasChildren))
|
|
{
|
|
nsCOMPtr<nsIDOMNode> temp(resultNode);
|
|
temp->GetLastChild(getter_AddRefs(resultNode));
|
|
resultNode->HasChildNodes(&hasChildren);
|
|
}
|
|
|
|
if (NS_SUCCEEDED(result)) {
|
|
*aResultNode = resultNode;
|
|
NS_ADDREF(*aResultNode);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetLeftmostChild(nsIDOMNode *aCurrentNode, nsIDOMNode **aResultNode)
|
|
{
|
|
nsresult result = NS_OK;
|
|
nsCOMPtr<nsIDOMNode> resultNode(do_QueryInterface(aCurrentNode));
|
|
PRBool hasChildren;
|
|
resultNode->HasChildNodes(&hasChildren);
|
|
while ((NS_SUCCEEDED(result)) && (PR_TRUE==hasChildren))
|
|
{
|
|
nsCOMPtr<nsIDOMNode> temp(resultNode);
|
|
temp->GetFirstChild(getter_AddRefs(resultNode));
|
|
resultNode->HasChildNodes(&hasChildren);
|
|
}
|
|
|
|
if (NS_SUCCEEDED(result)) {
|
|
*aResultNode = resultNode;
|
|
NS_ADDREF(*aResultNode);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::NodeIsType(nsIDOMNode *aNode, nsIAtom *aTag)
|
|
{
|
|
nsCOMPtr<nsIDOMElement>element;
|
|
element = do_QueryInterface(aNode);
|
|
if (element)
|
|
{
|
|
nsAutoString tag;
|
|
element->GetTagName(tag);
|
|
const PRUnichar *unicodeString;
|
|
aTag->GetUnicode(&unicodeString);
|
|
if (tag.EqualsIgnoreCase(nsAutoString(unicodeString)))
|
|
{
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::NodeIsType(nsIDOMNode *aNode, const nsAReadableString &aTagStr)
|
|
{
|
|
nsCOMPtr<nsIDOMElement>element;
|
|
element = do_QueryInterface(aNode);
|
|
if (element)
|
|
{
|
|
nsAutoString tag, tagStr(aTagStr);
|
|
element->GetTagName(tag);
|
|
if (tag.EqualsIgnoreCase(tagStr))
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::CanContainTag(nsIDOMNode* aParent, const nsAReadableString &aChildTag)
|
|
{
|
|
nsAutoString parentStringTag;
|
|
|
|
nsCOMPtr<nsIDOMElement> parentElement = do_QueryInterface(aParent);
|
|
if (!parentElement) return PR_FALSE;
|
|
|
|
parentElement->GetTagName(parentStringTag);
|
|
return TagCanContainTag(parentStringTag, aChildTag);
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::TagCanContain(const nsAReadableString &aParentTag, nsIDOMNode* aChild)
|
|
{
|
|
nsAutoString childStringTag;
|
|
|
|
if (IsTextNode(aChild))
|
|
{
|
|
childStringTag.AssignWithConversion("__moz_text");
|
|
}
|
|
else
|
|
{
|
|
nsCOMPtr<nsIDOMElement> childElement = do_QueryInterface(aChild);
|
|
if (!childElement) return PR_FALSE;
|
|
childElement->GetTagName(childStringTag);
|
|
}
|
|
return TagCanContainTag(aParentTag, childStringTag);
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::TagCanContainTag(const nsAReadableString &aParentTag, const nsAReadableString &aChildTag)
|
|
{
|
|
// if we don't have a dtd then assume we can insert whatever want
|
|
if (!mDTD) return PR_TRUE;
|
|
|
|
PRInt32 childTagEnum, parentTagEnum;
|
|
nsAutoString non_const_childTag(aChildTag);
|
|
nsAutoString non_const_parentTag(aParentTag);
|
|
nsresult res = mDTD->StringTagToIntTag(non_const_childTag,&childTagEnum);
|
|
if (NS_FAILED(res)) return PR_FALSE;
|
|
res = mDTD->StringTagToIntTag(non_const_parentTag,&parentTagEnum);
|
|
if (NS_FAILED(res)) return PR_FALSE;
|
|
|
|
return mDTD->CanContain(parentTagEnum, childTagEnum);
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::IsDescendantOfBody(nsIDOMNode *inNode)
|
|
{
|
|
if (!inNode) return PR_FALSE;
|
|
nsCOMPtr<nsIDOMElement> junk;
|
|
if (!mBodyElement) GetRootElement(getter_AddRefs(junk));
|
|
if (!mBodyElement) return PR_FALSE;
|
|
nsCOMPtr<nsIDOMNode> root = do_QueryInterface(mBodyElement);
|
|
|
|
if (inNode == root.get()) return PR_TRUE;
|
|
|
|
nsCOMPtr<nsIDOMNode> parent, node = do_QueryInterface(inNode);
|
|
|
|
do
|
|
{
|
|
node->GetParentNode(getter_AddRefs(parent));
|
|
if (parent == root) return PR_TRUE;
|
|
node = parent;
|
|
} while (parent);
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::IsContainer(nsIDOMNode *aNode)
|
|
{
|
|
if (!aNode) return PR_FALSE;
|
|
nsAutoString stringTag;
|
|
PRInt32 tagEnum;
|
|
nsresult res = aNode->GetNodeName(stringTag);
|
|
if (NS_FAILED(res)) return PR_FALSE;
|
|
res = mDTD->StringTagToIntTag(stringTag,&tagEnum);
|
|
if (NS_FAILED(res)) return PR_FALSE;
|
|
return mDTD->IsContainer(tagEnum);
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::IsEditable(nsIDOMNode *aNode)
|
|
{
|
|
if (!aNode) return PR_FALSE;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
GetPresShell(getter_AddRefs(shell));
|
|
if (!shell) return PR_FALSE;
|
|
|
|
if (IsMozEditorBogusNode(aNode)) return PR_FALSE;
|
|
|
|
// it's not the bogus node, so see if it is an irrelevant text node
|
|
if (PR_TRUE==IsTextNode(aNode))
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData> text = do_QueryInterface(aNode);
|
|
// nsCOMPtr<nsIDOMComment> commentNode = do_QueryInterface(aNode);
|
|
if (text)
|
|
{
|
|
nsAutoString data;
|
|
text->GetData(data);
|
|
PRUint32 length = data.Length();
|
|
if (0==length) {
|
|
return PR_FALSE;
|
|
}
|
|
// if the node contains only newlines, it's not editable
|
|
// you could use nsITextContent::IsOnlyWhitespace here
|
|
PRUint32 i;
|
|
for (i=0; i<length; i++)
|
|
{
|
|
PRUnichar character = data.CharAt(i);
|
|
if ('\n'!=character) {
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
}
|
|
|
|
// we got this far, so see if it has a frame. If so, we'll edit it.
|
|
nsIFrame *resultFrame;
|
|
nsCOMPtr<nsIContent>content;
|
|
content = do_QueryInterface(aNode);
|
|
if (content)
|
|
{
|
|
nsresult result = shell->GetPrimaryFrameFor(content, &resultFrame);
|
|
if (NS_FAILED(result) || !resultFrame) { // if it has no frame, it is not editable
|
|
return PR_FALSE;
|
|
}
|
|
else {
|
|
// it has a frame, so it might editable
|
|
// but not if it's a formatting whitespace node
|
|
if (IsEmptyTextContent(content)) return PR_FALSE;
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
return PR_FALSE; // it's not a content object (???) so it's not editable
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::IsMozEditorBogusNode(nsIDOMNode *aNode)
|
|
{
|
|
if (!aNode)
|
|
return PR_FALSE;
|
|
|
|
nsCOMPtr<nsIDOMElement>element;
|
|
element = do_QueryInterface(aNode);
|
|
if (element)
|
|
{
|
|
nsAutoString att; att.AssignWithConversion(kMOZEditorBogusNodeAttr);
|
|
nsAutoString val;
|
|
(void)element->GetAttribute(att, val);
|
|
if (val.EqualsWithConversion(kMOZEditorBogusNodeValue)) {
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::IsEmptyTextContent(nsIContent* aContent)
|
|
{
|
|
PRBool result = PR_FALSE;
|
|
nsCOMPtr<nsITextContent> tc(do_QueryInterface(aContent));
|
|
if (tc) {
|
|
tc->IsOnlyWhitespace(&result);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::CountEditableChildren(nsIDOMNode *aNode, PRUint32 &outCount)
|
|
{
|
|
outCount = 0;
|
|
if (!aNode) { return NS_ERROR_NULL_POINTER; }
|
|
nsresult res=NS_OK;
|
|
PRBool hasChildNodes;
|
|
aNode->HasChildNodes(&hasChildNodes);
|
|
if (PR_TRUE==hasChildNodes)
|
|
{
|
|
nsCOMPtr<nsIDOMNodeList>nodeList;
|
|
PRUint32 len;
|
|
PRUint32 i;
|
|
res = aNode->GetChildNodes(getter_AddRefs(nodeList));
|
|
if (NS_SUCCEEDED(res) && nodeList)
|
|
{
|
|
nodeList->GetLength(&len);
|
|
for (i=0 ; i<len; i++)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> child;
|
|
res = nodeList->Item((PRInt32)i, getter_AddRefs(child));
|
|
if ((NS_SUCCEEDED(res)) && (child))
|
|
{
|
|
if (IsEditable(child))
|
|
{
|
|
outCount++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (!nodeList)
|
|
res = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
//END nsEditor static utility methods
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::IncDocModCount(PRInt32 inNumMods)
|
|
{
|
|
if (!mDocWeak) return NS_ERROR_NOT_INITIALIZED;
|
|
|
|
nsCOMPtr<nsIDOMDocument> doc = do_QueryReferent(mDocWeak);
|
|
if (!doc) return NS_ERROR_NOT_INITIALIZED;
|
|
nsCOMPtr<nsIDiskDocument> diskDoc = do_QueryInterface(doc);
|
|
if (diskDoc)
|
|
diskDoc->IncrementModificationCount(inNumMods);
|
|
|
|
NotifyDocumentListeners(eDocumentStateChanged);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::GetDocModCount(PRInt32 &outModCount)
|
|
{
|
|
if (!mDocWeak) return NS_ERROR_NOT_INITIALIZED;
|
|
|
|
outModCount = 0;
|
|
|
|
nsCOMPtr<nsIDOMDocument> doc = do_QueryReferent(mDocWeak);
|
|
if (!doc) return NS_ERROR_NOT_INITIALIZED;
|
|
nsCOMPtr<nsIDiskDocument> diskDoc = do_QueryInterface(doc);
|
|
if (diskDoc)
|
|
diskDoc->GetModificationCount(&outModCount);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::ResetDocModCount()
|
|
{
|
|
if (!mDocWeak) return NS_ERROR_NOT_INITIALIZED;
|
|
|
|
nsCOMPtr<nsIDOMDocument> doc = do_QueryReferent(mDocWeak);
|
|
if (!doc) return NS_ERROR_NOT_INITIALIZED;
|
|
nsCOMPtr<nsIDiskDocument> diskDoc = do_QueryInterface(doc);
|
|
if (diskDoc)
|
|
diskDoc->ResetModificationCount();
|
|
|
|
NotifyDocumentListeners(eDocumentStateChanged);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
void nsEditor::HACKForceRedraw()
|
|
{
|
|
#ifdef HACK_FORCE_REDRAW
|
|
// XXXX: Horrible hack! We are doing this because
|
|
// of an error in Gecko which is not rendering the
|
|
// document after a change via the DOM - gpk 2/11/99
|
|
// BEGIN HACK!!!
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
|
|
GetPresShell(getter_AddRefs(shell));
|
|
if (shell) {
|
|
nsCOMPtr<nsIViewManager> viewmgr;
|
|
|
|
shell->GetViewManager(getter_AddRefs(viewmgr));
|
|
if (viewmgr) {
|
|
nsIView* view;
|
|
viewmgr->GetRootView(view); // views are not refCounted
|
|
if (view) {
|
|
viewmgr->UpdateView(view,NS_VMREFRESH_IMMEDIATE);
|
|
}
|
|
}
|
|
}
|
|
// END HACK
|
|
#endif
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetFirstNodeOfType(nsIDOMNode *aStartNode,
|
|
const nsAReadableString &aTag,
|
|
nsIDOMNode **aResult)
|
|
{
|
|
nsresult result=NS_OK;
|
|
|
|
if (!aStartNode)
|
|
return NS_ERROR_NULL_POINTER;
|
|
if (!aResult)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIDOMElement> element;
|
|
*aResult = nsnull;
|
|
nsCOMPtr<nsIDOMNode> childNode;
|
|
result = aStartNode->GetFirstChild(getter_AddRefs(childNode));
|
|
while (childNode)
|
|
{
|
|
result = childNode->QueryInterface(NS_GET_IID(nsIDOMNode),getter_AddRefs(element));
|
|
if (NS_SUCCEEDED(result) && (element))
|
|
{
|
|
nsAutoString tag, tagStr(aTag);
|
|
element->GetTagName(tag);
|
|
if (tagStr.EqualsIgnoreCase(tag))
|
|
{
|
|
return (childNode->QueryInterface(NS_GET_IID(nsIDOMNode),(void **) aResult)); // does the addref
|
|
}
|
|
else
|
|
{
|
|
result = GetFirstNodeOfType(childNode, aTag, aResult);
|
|
if (nsnull!=*aResult)
|
|
return result;
|
|
}
|
|
}
|
|
nsCOMPtr<nsIDOMNode> temp = childNode;
|
|
temp->GetNextSibling(getter_AddRefs(childNode));
|
|
}
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetFirstTextNode(nsIDOMNode *aNode, nsIDOMNode **aRetNode)
|
|
{
|
|
if (!aNode || !aRetNode)
|
|
{
|
|
NS_NOTREACHED("GetFirstTextNode Failed");
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
PRUint16 mType;
|
|
PRBool mCNodes;
|
|
|
|
nsCOMPtr<nsIDOMNode> answer;
|
|
|
|
aNode->GetNodeType(&mType);
|
|
|
|
if (nsIDOMNode::ELEMENT_NODE == mType) {
|
|
if (NS_SUCCEEDED(aNode->HasChildNodes(&mCNodes)) && PR_TRUE == mCNodes)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> node1;
|
|
nsCOMPtr<nsIDOMNode> node2;
|
|
|
|
if (!NS_SUCCEEDED(aNode->GetFirstChild(getter_AddRefs(node1))))
|
|
{
|
|
NS_NOTREACHED("GetFirstTextNode Failed");
|
|
}
|
|
while(!answer && node1)
|
|
{
|
|
GetFirstTextNode(node1, getter_AddRefs(answer));
|
|
node1->GetNextSibling(getter_AddRefs(node2));
|
|
node1 = node2;
|
|
}
|
|
}
|
|
}
|
|
else if (nsIDOMNode::TEXT_NODE == mType) {
|
|
answer = do_QueryInterface(aNode);
|
|
}
|
|
|
|
// OK, now return the answer, if any
|
|
*aRetNode = answer;
|
|
if (*aRetNode)
|
|
NS_IF_ADDREF(*aRetNode);
|
|
else
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
//END nsEditor Private methods
|
|
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// GetTag: digs out the atom for the tag of this node
|
|
//
|
|
nsCOMPtr<nsIAtom>
|
|
nsEditor::GetTag(nsIDOMNode *aNode)
|
|
{
|
|
nsCOMPtr<nsIAtom> atom;
|
|
|
|
if (!aNode)
|
|
{
|
|
NS_NOTREACHED("null node passed to nsEditor::GetTag()");
|
|
return atom;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
|
|
if (content)
|
|
content->GetTag(*getter_AddRefs(atom));
|
|
|
|
return atom;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// GetTagString: digs out string for the tag of this node
|
|
//
|
|
nsresult
|
|
nsEditor::GetTagString(nsIDOMNode *aNode, nsAWritableString& outString)
|
|
{
|
|
nsCOMPtr<nsIAtom> atom;
|
|
|
|
if (!aNode)
|
|
{
|
|
NS_NOTREACHED("null node passed to nsEditor::GetTag()");
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
atom = GetTag(aNode);
|
|
if (atom)
|
|
{
|
|
atom->ToString(outString);
|
|
return NS_OK;
|
|
}
|
|
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// NodesSameType: do these nodes have the same tag?
|
|
//
|
|
PRBool
|
|
nsEditor::NodesSameType(nsIDOMNode *aNode1, nsIDOMNode *aNode2)
|
|
{
|
|
if (!aNode1 || !aNode2)
|
|
{
|
|
NS_NOTREACHED("null node passed to nsEditor::NodesSameType()");
|
|
return PR_FALSE;
|
|
}
|
|
|
|
nsCOMPtr<nsIAtom> atom1 = GetTag(aNode1);
|
|
nsCOMPtr<nsIAtom> atom2 = GetTag(aNode2);
|
|
|
|
if (atom1.get() == atom2.get())
|
|
return PR_TRUE;
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
|
|
// IsTextOrElementNode: true if node of dom type element or text
|
|
//
|
|
PRBool
|
|
nsEditor::IsTextOrElementNode(nsIDOMNode *aNode)
|
|
{
|
|
if (!aNode)
|
|
{
|
|
NS_NOTREACHED("null node passed to IsTextOrElementNode()");
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRUint16 nodeType;
|
|
aNode->GetNodeType(&nodeType);
|
|
if ((nodeType == nsIDOMNode::ELEMENT_NODE) || (nodeType == nsIDOMNode::TEXT_NODE))
|
|
return PR_TRUE;
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// IsTextNode: true if node of dom type text
|
|
//
|
|
PRBool
|
|
nsEditor::IsTextNode(nsIDOMNode *aNode)
|
|
{
|
|
if (!aNode)
|
|
{
|
|
NS_NOTREACHED("null node passed to IsTextNode()");
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRUint16 nodeType;
|
|
aNode->GetNodeType(&nodeType);
|
|
if (nodeType == nsIDOMNode::TEXT_NODE)
|
|
return PR_TRUE;
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// GetIndexOf: returns the position index of the node in the parent
|
|
//
|
|
PRInt32
|
|
nsEditor::GetIndexOf(nsIDOMNode *parent, nsIDOMNode *child)
|
|
{
|
|
PRInt32 idx = 0;
|
|
|
|
NS_PRECONDITION(parent, "null parent passed to nsEditor::GetIndexOf");
|
|
NS_PRECONDITION(parent, "null child passed to nsEditor::GetIndexOf");
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(parent);
|
|
nsCOMPtr<nsIContent> cChild = do_QueryInterface(child);
|
|
NS_PRECONDITION(content, "null content in nsEditor::GetIndexOf");
|
|
NS_PRECONDITION(cChild, "null content in nsEditor::GetIndexOf");
|
|
|
|
nsresult res = content->IndexOf(cChild, idx);
|
|
if (NS_FAILED(res))
|
|
{
|
|
NS_NOTREACHED("could not find child in parent - nsEditor::GetIndexOf");
|
|
}
|
|
return idx;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// GetChildAt: returns the node at this position index in the parent
|
|
//
|
|
nsCOMPtr<nsIDOMNode>
|
|
nsEditor::GetChildAt(nsIDOMNode *aParent, PRInt32 aOffset)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> resultNode;
|
|
|
|
if (!aParent)
|
|
return resultNode;
|
|
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aParent);
|
|
nsCOMPtr<nsIContent> cChild;
|
|
NS_PRECONDITION(content, "null content in nsEditor::GetChildAt");
|
|
|
|
if (NS_FAILED(content->ChildAt(aOffset, *getter_AddRefs(cChild))))
|
|
return resultNode;
|
|
|
|
resultNode = do_QueryInterface(cChild);
|
|
return resultNode;
|
|
}
|
|
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// GetStartNodeAndOffset: returns whatever the start parent & offset is of
|
|
// the first range in the selection.
|
|
nsresult
|
|
nsEditor::GetStartNodeAndOffset(nsISelection *aSelection,
|
|
nsCOMPtr<nsIDOMNode> *outStartNode,
|
|
PRInt32 *outStartOffset)
|
|
{
|
|
if (!outStartNode || !outStartOffset || !aSelection)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIEnumerator> enumerator;
|
|
nsresult result;
|
|
nsCOMPtr<nsISelection> sel(aSelection);
|
|
nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(sel));
|
|
result = selPrivate->GetEnumerator(getter_AddRefs(enumerator));
|
|
if (NS_FAILED(result) || !enumerator)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
enumerator->First();
|
|
nsCOMPtr<nsISupports> currentItem;
|
|
if ((NS_FAILED(enumerator->CurrentItem(getter_AddRefs(currentItem)))) || !currentItem)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
|
|
if (!range)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
if (NS_FAILED(range->GetStartContainer(getter_AddRefs(*outStartNode))))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
if (NS_FAILED(range->GetStartOffset(outStartOffset)))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// GetEndNodeAndOffset: returns whatever the end parent & offset is of
|
|
// the first range in the selection.
|
|
nsresult
|
|
nsEditor::GetEndNodeAndOffset(nsISelection *aSelection,
|
|
nsCOMPtr<nsIDOMNode> *outEndNode,
|
|
PRInt32 *outEndOffset)
|
|
{
|
|
if (!outEndNode || !outEndOffset)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIEnumerator> enumerator;
|
|
nsCOMPtr<nsISelection> sel(aSelection);
|
|
nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(sel));
|
|
nsresult result = selPrivate->GetEnumerator(getter_AddRefs(enumerator));
|
|
if (NS_FAILED(result) || !enumerator)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
enumerator->First();
|
|
nsCOMPtr<nsISupports> currentItem;
|
|
if ((NS_FAILED(enumerator->CurrentItem(getter_AddRefs(currentItem)))) || !currentItem)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
|
|
if (!range)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
if (NS_FAILED(range->GetEndContainer(getter_AddRefs(*outEndNode))))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
if (NS_FAILED(range->GetEndOffset(outEndOffset)))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// IsPreformatted: checks the style info for the node for the preformatted
|
|
// text style.
|
|
nsresult
|
|
nsEditor::IsPreformatted(nsIDOMNode *aNode, PRBool *aResult)
|
|
{
|
|
nsresult result;
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
|
|
nsIFrame *frame;
|
|
nsCOMPtr<nsIStyleContext> styleContext;
|
|
const nsStyleText* styleText;
|
|
PRBool bPreformatted;
|
|
|
|
if (!aResult || !content) return NS_ERROR_NULL_POINTER;
|
|
|
|
if (!mPresShellWeak) return NS_ERROR_NOT_INITIALIZED;
|
|
nsCOMPtr<nsIPresShell> ps = do_QueryReferent(mPresShellWeak);
|
|
if (!ps) return NS_ERROR_NOT_INITIALIZED;
|
|
|
|
result = ps->GetPrimaryFrameFor(content, &frame);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
result = ps->GetStyleContextFor(frame, getter_AddRefs(styleContext));
|
|
if (NS_FAILED(result))
|
|
{
|
|
// Consider nodes without a style context to be NOT preformatted:
|
|
// For instance, this is true of JS tags inside the body (which show
|
|
// up as #text nodes but have no style context).
|
|
*aResult = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
styleText = (const nsStyleText*)styleContext->GetStyleData(eStyleStruct_Text);
|
|
|
|
bPreformatted = (NS_STYLE_WHITESPACE_PRE == styleText->mWhiteSpace) ||
|
|
(NS_STYLE_WHITESPACE_MOZ_PRE_WRAP == styleText->mWhiteSpace);
|
|
|
|
*aResult = bPreformatted;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// SplitNodeDeep: this splits a node "deeply", splitting children as
|
|
// appropriate. The place to split is represented by
|
|
// a dom point at {splitPointParent, splitPointOffset}.
|
|
// That dom point must be inside aNode, which is the node to
|
|
// split. outOffset is set to the offset in the parent of aNode where
|
|
// the split terminates - where you would want to insert
|
|
// a new element, for instance, if thats why you were splitting
|
|
// the node.
|
|
//
|
|
nsresult
|
|
nsEditor::SplitNodeDeep(nsIDOMNode *aNode,
|
|
nsIDOMNode *aSplitPointParent,
|
|
PRInt32 aSplitPointOffset,
|
|
PRInt32 *outOffset,
|
|
PRBool aNoEmptyContainers,
|
|
nsCOMPtr<nsIDOMNode> *outLeftNode,
|
|
nsCOMPtr<nsIDOMNode> *outRightNode)
|
|
{
|
|
if (!aNode || !aSplitPointParent || !outOffset) return NS_ERROR_NULL_POINTER;
|
|
nsCOMPtr<nsIDOMNode> nodeToSplit = do_QueryInterface(aSplitPointParent);
|
|
nsCOMPtr<nsIDOMNode> tempNode, parentNode;
|
|
PRInt32 offset = aSplitPointOffset;
|
|
nsresult res;
|
|
|
|
if (outLeftNode) *outLeftNode = nsnull;
|
|
if (outRightNode) *outRightNode = nsnull;
|
|
|
|
while (nodeToSplit)
|
|
{
|
|
// need to insert rules code call here to do things like
|
|
// not split a list if you are after the last <li> or before the first, etc.
|
|
// for now we just have some smarts about unneccessarily splitting
|
|
// textnodes, which should be universal enough to put straight in
|
|
// this nsEditor routine.
|
|
|
|
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(nodeToSplit);
|
|
PRUint32 len;
|
|
PRBool bDoSplit = PR_FALSE;
|
|
res = GetLengthOfDOMNode(nodeToSplit, len);
|
|
if (NS_FAILED(res)) return res;
|
|
|
|
if (!(aNoEmptyContainers || nodeAsText) || (offset && (offset != (PRInt32)len)))
|
|
{
|
|
bDoSplit = PR_TRUE;
|
|
res = SplitNode(nodeToSplit, offset, getter_AddRefs(tempNode));
|
|
if (NS_FAILED(res)) return res;
|
|
if (outRightNode) *outRightNode = nodeToSplit;
|
|
if (outLeftNode) *outLeftNode = tempNode;
|
|
}
|
|
|
|
res = nodeToSplit->GetParentNode(getter_AddRefs(parentNode));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!parentNode) return NS_ERROR_FAILURE;
|
|
|
|
if (!bDoSplit && offset) // must be "end of text node" case, we didn't split it, just move past it
|
|
{
|
|
offset = GetIndexOf(parentNode, nodeToSplit) +1;
|
|
if (outLeftNode) *outLeftNode = nodeToSplit;
|
|
}
|
|
else
|
|
{
|
|
offset = GetIndexOf(parentNode, nodeToSplit);
|
|
if (outRightNode) *outRightNode = nodeToSplit;
|
|
}
|
|
|
|
if (nodeToSplit.get() == aNode) // we split all the way up to (and including) aNode; we're done
|
|
break;
|
|
|
|
nodeToSplit = parentNode;
|
|
}
|
|
|
|
if (!nodeToSplit)
|
|
{
|
|
NS_NOTREACHED("null node obtained in nsEditor::SplitNodeDeep()");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
*outOffset = offset;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// JoinNodeDeep: this joins two like nodes "deeply", joining children as
|
|
// appropriate.
|
|
nsresult
|
|
nsEditor::JoinNodeDeep(nsIDOMNode *aLeftNode,
|
|
nsIDOMNode *aRightNode,
|
|
nsCOMPtr<nsIDOMNode> *aOutJoinNode,
|
|
PRInt32 *outOffset)
|
|
{
|
|
if (!aLeftNode || !aRightNode || !aOutJoinNode || !outOffset) return NS_ERROR_NULL_POINTER;
|
|
|
|
// while the rightmost children and their descendants of the left node
|
|
// match the leftmost children and their descendants of the right node
|
|
// join them up. Can you say that three times fast?
|
|
|
|
nsCOMPtr<nsIDOMNode> leftNodeToJoin = do_QueryInterface(aLeftNode);
|
|
nsCOMPtr<nsIDOMNode> rightNodeToJoin = do_QueryInterface(aRightNode);
|
|
nsCOMPtr<nsIDOMNode> parentNode,tmp;
|
|
nsresult res = NS_OK;
|
|
|
|
rightNodeToJoin->GetParentNode(getter_AddRefs(parentNode));
|
|
|
|
while (leftNodeToJoin && rightNodeToJoin && parentNode &&
|
|
NodesSameType(leftNodeToJoin, rightNodeToJoin))
|
|
{
|
|
// adjust out params
|
|
PRUint32 length;
|
|
if (IsTextNode(leftNodeToJoin))
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData>nodeAsText;
|
|
nodeAsText = do_QueryInterface(leftNodeToJoin);
|
|
nodeAsText->GetLength(&length);
|
|
}
|
|
else
|
|
{
|
|
res = GetLengthOfDOMNode(leftNodeToJoin, length);
|
|
if (NS_FAILED(res)) return res;
|
|
}
|
|
|
|
*aOutJoinNode = rightNodeToJoin;
|
|
*outOffset = length;
|
|
|
|
// do the join
|
|
res = JoinNodes(leftNodeToJoin, rightNodeToJoin, parentNode);
|
|
if (NS_FAILED(res)) return res;
|
|
|
|
if (IsTextNode(parentNode)) // we've joined all the way down to text nodes, we're done!
|
|
return NS_OK;
|
|
|
|
else
|
|
{
|
|
// get new left and right nodes, and begin anew
|
|
parentNode = rightNodeToJoin;
|
|
leftNodeToJoin = GetChildAt(parentNode, length-1);
|
|
rightNodeToJoin = GetChildAt(parentNode, length);
|
|
|
|
// skip over non-editable nodes
|
|
while (leftNodeToJoin && !IsEditable(leftNodeToJoin))
|
|
{
|
|
leftNodeToJoin->GetPreviousSibling(getter_AddRefs(tmp));
|
|
leftNodeToJoin = tmp;
|
|
}
|
|
if (!leftNodeToJoin) break;
|
|
|
|
while (rightNodeToJoin && !IsEditable(rightNodeToJoin))
|
|
{
|
|
rightNodeToJoin->GetNextSibling(getter_AddRefs(tmp));
|
|
rightNodeToJoin = tmp;
|
|
}
|
|
if (!rightNodeToJoin) break;
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
nsresult nsEditor::BeginUpdateViewBatch()
|
|
{
|
|
NS_PRECONDITION(mUpdateCount>=0, "bad state");
|
|
|
|
nsCOMPtr<nsISelection>selection;
|
|
nsresult rv = GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(rv) && selection)
|
|
{
|
|
nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(selection));
|
|
selPrivate->StartBatchChanges();
|
|
}
|
|
|
|
if (nsnull!=mViewManager)
|
|
{
|
|
if (0==mUpdateCount)
|
|
{
|
|
#ifdef HACK_FORCE_REDRAW
|
|
mViewManager->DisableRefresh();
|
|
#else
|
|
mViewManager->BeginUpdateViewBatch();
|
|
#endif
|
|
nsCOMPtr<nsIPresShell> presShell;
|
|
rv = GetPresShell(getter_AddRefs(presShell));
|
|
if (NS_SUCCEEDED(rv) && presShell)
|
|
presShell->BeginReflowBatching();
|
|
}
|
|
mUpdateCount++;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsresult nsEditor::EndUpdateViewBatch()
|
|
{
|
|
NS_PRECONDITION(mUpdateCount>0, "bad state");
|
|
|
|
nsresult rv;
|
|
nsCOMPtr<nsISelectionController> selCon = do_QueryReferent(mSelConWeak,&rv);
|
|
if (NS_FAILED(rv) || !selCon)
|
|
return rv?rv:NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIPresShell> ps = do_QueryReferent(mPresShellWeak);
|
|
nsCOMPtr<nsICaret> caret;
|
|
if (ps)
|
|
rv = ps->GetCaret(getter_AddRefs(caret));
|
|
if (NS_FAILED(rv) ||!caret)
|
|
return rv?rv:NS_ERROR_FAILURE;
|
|
StCaretHider caretHider(caret);
|
|
|
|
nsCOMPtr<nsISelection>selection;
|
|
nsresult selectionResult = GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(selectionResult) && selection) {
|
|
nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(selection));
|
|
selPrivate->EndBatchChanges();
|
|
}
|
|
|
|
if (mViewManager)
|
|
{
|
|
mUpdateCount--;
|
|
if (0==mUpdateCount)
|
|
{
|
|
PRUint32 flags = 0;
|
|
|
|
rv = GetFlags(&flags);
|
|
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
// Make sure we enable reflowing before we call
|
|
// mViewManager->EndUpdateViewBatch(). This will make sure that any
|
|
// new updates caused by a reflow, that may happen during the
|
|
// EndReflowBatching(), get included if we force a refresh during
|
|
// the mViewManager->EndUpdateViewBatch() call.
|
|
|
|
PRBool forceReflow = PR_TRUE;
|
|
|
|
if (flags & nsIPlaintextEditor::eEditorDisableForcedReflowsMask)
|
|
forceReflow = PR_FALSE;
|
|
|
|
nsCOMPtr<nsIPresShell> presShell;
|
|
rv = GetPresShell(getter_AddRefs(presShell));
|
|
if (NS_SUCCEEDED(rv) && presShell)
|
|
presShell->EndReflowBatching(forceReflow);
|
|
|
|
PRUint32 updateFlag = NS_VMREFRESH_IMMEDIATE;
|
|
|
|
if (flags & nsIPlaintextEditor::eEditorDisableForcedUpdatesMask)
|
|
updateFlag = NS_VMREFRESH_NO_SYNC;
|
|
|
|
#ifdef HACK_FORCE_REDRAW
|
|
mViewManager->EnableRefresh(updateFlag);
|
|
HACKForceRedraw();
|
|
#else
|
|
mViewManager->EndUpdateViewBatch(updateFlag);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
PRBool
|
|
nsEditor::GetShouldTxnSetSelection()
|
|
{
|
|
return mShouldTxnSetSelection;
|
|
}
|
|
|
|
|
|
void
|
|
nsEditor::SetShouldTxnSetSelection(PRBool aShould)
|
|
{
|
|
mShouldTxnSetSelection = aShould;
|
|
}
|
|
|
|
#ifdef XP_MAC
|
|
#pragma mark -
|
|
#pragma mark protected nsEditor methods
|
|
#pragma mark -
|
|
#endif
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DeleteSelectionImpl(nsIEditor::EDirection aAction)
|
|
{
|
|
nsresult res;
|
|
|
|
EditAggregateTxn *txn;
|
|
PRInt32 i;
|
|
nsIEditActionListener *listener;
|
|
nsCOMPtr<nsISelection>selection;
|
|
res = GetSelection(getter_AddRefs(selection));
|
|
if (NS_FAILED(res)) return res;
|
|
res = CreateTxnForDeleteSelection(aAction, &txn);
|
|
if (NS_FAILED(res)) return res;
|
|
nsAutoRules beginRulesSniffing(this, kOpDeleteSelection, aAction);
|
|
|
|
if (NS_SUCCEEDED(res))
|
|
{
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->WillDeleteSelection(selection);
|
|
}
|
|
}
|
|
|
|
res = Do(txn);
|
|
|
|
if (mActionListeners)
|
|
{
|
|
for (i = 0; i < mActionListeners->Count(); i++)
|
|
{
|
|
listener = (nsIEditActionListener *)mActionListeners->ElementAt(i);
|
|
if (listener)
|
|
listener->DidDeleteSelection(selection);
|
|
}
|
|
}
|
|
}
|
|
|
|
// The transaction system (if any) has taken ownwership of txn
|
|
NS_IF_RELEASE(txn);
|
|
|
|
return res;
|
|
}
|
|
|
|
// XXX: error handling in this routine needs to be cleaned up!
|
|
NS_IMETHODIMP
|
|
nsEditor::DeleteSelectionAndCreateNode(const nsAReadableString& aTag,
|
|
nsIDOMNode ** aNewNode)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> parentSelectedNode;
|
|
PRInt32 offsetOfNewNode;
|
|
nsresult result = DeleteSelectionAndPrepareToCreateNode(parentSelectedNode,
|
|
offsetOfNewNode);
|
|
if (!NS_SUCCEEDED(result))
|
|
return result;
|
|
|
|
nsCOMPtr<nsIDOMNode> newNode;
|
|
result = CreateNode(aTag, parentSelectedNode, offsetOfNewNode,
|
|
getter_AddRefs(newNode));
|
|
// XXX: ERROR_HANDLING check result, and make sure aNewNode is set correctly in success/failure cases
|
|
*aNewNode = newNode;
|
|
NS_IF_ADDREF(*aNewNode);
|
|
|
|
// we want the selection to be just after the new node
|
|
nsCOMPtr<nsISelection> selection;
|
|
result = GetSelection(getter_AddRefs(selection));
|
|
if (NS_FAILED(result)) return result;
|
|
if (!selection) return NS_ERROR_NULL_POINTER;
|
|
result = selection->Collapse(parentSelectedNode, offsetOfNewNode+1);
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* Non-interface, protected methods */
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DeleteSelectionAndPrepareToCreateNode(nsCOMPtr<nsIDOMNode> &parentSelectedNode, PRInt32& offsetOfNewNode)
|
|
{
|
|
nsresult result=NS_ERROR_NOT_INITIALIZED;
|
|
nsCOMPtr<nsISelection> selection;
|
|
result = GetSelection(getter_AddRefs(selection));
|
|
if (NS_FAILED(result)) return result;
|
|
if (!selection) return NS_ERROR_NULL_POINTER;
|
|
|
|
PRBool collapsed;
|
|
result = selection->GetIsCollapsed(&collapsed);
|
|
if (NS_SUCCEEDED(result) && !collapsed)
|
|
{
|
|
result = DeleteSelection(nsIEditor::eNone);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
// get the new selection
|
|
result = GetSelection(getter_AddRefs(selection));
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
#ifdef NS_DEBUG
|
|
nsCOMPtr<nsIDOMNode>testSelectedNode;
|
|
nsresult debugResult = selection->GetAnchorNode(getter_AddRefs(testSelectedNode));
|
|
// no selection is ok.
|
|
// if there is a selection, it must be collapsed
|
|
if (testSelectedNode)
|
|
{
|
|
PRBool testCollapsed;
|
|
debugResult = selection->GetIsCollapsed(&testCollapsed);
|
|
NS_ASSERTION((NS_SUCCEEDED(result)), "couldn't get a selection after deletion");
|
|
NS_ASSERTION(testCollapsed, "selection not reset after deletion");
|
|
}
|
|
#endif
|
|
}
|
|
// split the selected node
|
|
PRInt32 offsetOfSelectedNode;
|
|
result = selection->GetAnchorNode(getter_AddRefs(parentSelectedNode));
|
|
if (NS_SUCCEEDED(result) && NS_SUCCEEDED(selection->GetAnchorOffset(&offsetOfSelectedNode)) && parentSelectedNode)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> selectedNode;
|
|
PRUint32 selectedNodeContentCount=0;
|
|
nsCOMPtr<nsIDOMCharacterData>selectedParentNodeAsText;
|
|
selectedParentNodeAsText = do_QueryInterface(parentSelectedNode);
|
|
|
|
offsetOfNewNode = offsetOfSelectedNode;
|
|
|
|
/* if the selection is a text node, split the text node if necesary
|
|
and compute where to put the new node
|
|
*/
|
|
if (selectedParentNodeAsText)
|
|
{
|
|
PRInt32 indexOfTextNodeInParent;
|
|
selectedNode = do_QueryInterface(parentSelectedNode);
|
|
selectedNode->GetParentNode(getter_AddRefs(parentSelectedNode));
|
|
selectedParentNodeAsText->GetLength(&selectedNodeContentCount);
|
|
GetChildOffset(selectedNode, parentSelectedNode, indexOfTextNodeInParent);
|
|
|
|
if ((offsetOfSelectedNode!=0) && (((PRUint32)offsetOfSelectedNode)!=selectedNodeContentCount))
|
|
{
|
|
nsCOMPtr<nsIDOMNode> newSiblingNode;
|
|
result = SplitNode(selectedNode, offsetOfSelectedNode, getter_AddRefs(newSiblingNode));
|
|
// now get the node's offset in it's parent, and insert the new tag there
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = GetChildOffset(selectedNode, parentSelectedNode, offsetOfNewNode);
|
|
}
|
|
}
|
|
else
|
|
{ // determine where to insert the new node
|
|
if (0==offsetOfSelectedNode) {
|
|
offsetOfNewNode = indexOfTextNodeInParent; // insert new node as previous sibling to selection parent
|
|
}
|
|
else { // insert new node as last child
|
|
GetChildOffset(selectedNode, parentSelectedNode, offsetOfNewNode);
|
|
offsetOfNewNode++; // offsets are 0-based, and we need the index of the new node
|
|
}
|
|
}
|
|
}
|
|
// Here's where the new node was inserted
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
printf("InsertLineBreak into an empty document is not yet supported\n");
|
|
}
|
|
#endif
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DoAfterDoTransaction(nsITransaction *aTxn)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
PRBool isTransientTransaction;
|
|
rv = aTxn->GetIsTransient(&isTransientTransaction);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
if (!isTransientTransaction)
|
|
{
|
|
// we need to deal here with the case where the user saved after some
|
|
// edits, then undid one or more times. Then, the undo count is -ve,
|
|
// but we can't let a do take it back to zero. So we flip it up to
|
|
// a +ve number.
|
|
PRInt32 modCount;
|
|
GetDocModCount(modCount);
|
|
if (modCount < 0)
|
|
modCount = -modCount;
|
|
|
|
rv = IncDocModCount(1); // don't count transient transactions
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DoAfterUndoTransaction()
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
rv = IncDocModCount(-1); // all undoable transactions are non-transient
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DoAfterRedoTransaction()
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
rv = IncDocModCount(1); // all redoable transactions are non-transient
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::DoAfterDocumentSave()
|
|
{
|
|
// the mod count is reset by nsIDiskDocument.
|
|
NotifyDocumentListeners(eDocumentStateChanged);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateTxnForSetAttribute(nsIDOMElement *aElement,
|
|
const nsAReadableString& aAttribute,
|
|
const nsAReadableString& aValue,
|
|
ChangeAttributeTxn ** aTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aElement)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(ChangeAttributeTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aElement, aAttribute, aValue, PR_FALSE);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateTxnForRemoveAttribute(nsIDOMElement *aElement,
|
|
const nsAReadableString& aAttribute,
|
|
ChangeAttributeTxn ** aTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aElement)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(ChangeAttributeTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
nsAutoString value;
|
|
result = (*aTxn)->Init(this, aElement, aAttribute, value, PR_TRUE);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForCreateElement(const nsAReadableString& aTag,
|
|
nsIDOMNode *aParent,
|
|
PRInt32 aPosition,
|
|
CreateElementTxn ** aTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aParent)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(CreateElementTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aTag, aParent, aPosition);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForInsertElement(nsIDOMNode * aNode,
|
|
nsIDOMNode * aParent,
|
|
PRInt32 aPosition,
|
|
InsertElementTxn ** aTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (aNode && aParent && aTxn)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(InsertElementTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(aNode, aParent, aPosition, this);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP nsEditor::CreateTxnForDeleteElement(nsIDOMNode * aElement,
|
|
DeleteElementTxn ** aTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aElement)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(DeleteElementTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(aElement);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*NS_IMETHODIMP nsEditor::CreateAggregateTxnForDeleteSelection(nsIAtom *aTxnName, EditAggregateTxn **aAggTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (aAggTxn)
|
|
{
|
|
*aAggTxn = nsnull;
|
|
result = TransactionFactory::GetNewTransaction(EditAggregateTxn::GetCID(), (EditTxn**)aAggTxn);
|
|
|
|
if (NS_FAILED(result) || !*aAggTxn) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// Set the name for the aggregate transaction
|
|
(*aAggTxn)->SetName(aTxnName);
|
|
|
|
// Get current selection and setup txn to delete it,
|
|
// but only if selection exists (is not a collapsed "caret" state)
|
|
nsCOMPtr<nsISelection> selection;
|
|
if (!mPresShellWeak) return NS_ERROR_NOT_INITIALIZED;
|
|
nsCOMPtr<nsIPresShell> ps = do_QueryReferent(mPresShellWeak);
|
|
if (!ps) return NS_ERROR_NOT_INITIALIZED;
|
|
result = ps->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(result) && selection)
|
|
{
|
|
PRBool collapsed;
|
|
result = selection->GetIsCollapsed(&collapsed);
|
|
if (NS_SUCCEEDED(result) && !collapsed) {
|
|
EditAggregateTxn *delSelTxn;
|
|
result = CreateTxnForDeleteSelection(eNone, &delSelTxn);
|
|
if (NS_SUCCEEDED(result) && delSelTxn) {
|
|
(*aAggTxn)->AppendChild(delSelTxn);
|
|
NS_RELEASE(delSelTxn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
*/
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateTxnForIMEText(const nsAReadableString& aStringToInsert,
|
|
IMETextTxn ** aTxn)
|
|
{
|
|
NS_ASSERTION(aTxn, "illegal value- null ptr- aTxn");
|
|
if(!aTxn) return NS_ERROR_NULL_POINTER;
|
|
|
|
nsresult result;
|
|
|
|
result = TransactionFactory::GetNewTransaction(IMETextTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (nsnull!=*aTxn) {
|
|
result = (*aTxn)->Init(mIMETextNode,mIMETextOffset,mIMEBufferLength,mIMETextRangeList,aStringToInsert,mSelConWeak);
|
|
}
|
|
else {
|
|
result = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateTxnForAddStyleSheet(nsICSSStyleSheet* aSheet, AddStyleSheetTxn* *aTxn)
|
|
{
|
|
nsresult rv = TransactionFactory::GetNewTransaction(AddStyleSheetTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
if (! *aTxn)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
return (*aTxn)->Init(this, aSheet);
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateTxnForRemoveStyleSheet(nsICSSStyleSheet* aSheet, RemoveStyleSheetTxn* *aTxn)
|
|
{
|
|
nsresult rv = TransactionFactory::GetNewTransaction(RemoveStyleSheetTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
if (! *aTxn)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
return (*aTxn)->Init(this, aSheet);
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateTxnForDeleteSelection(nsIEditor::EDirection aAction,
|
|
EditAggregateTxn ** aTxn)
|
|
{
|
|
if (!aTxn)
|
|
return NS_ERROR_NULL_POINTER;
|
|
*aTxn = nsnull;
|
|
|
|
#ifdef DEBUG_akkana
|
|
NS_ASSERTION(aAction != eNextWord && aAction != ePreviousWord && aAction != eToEndOfLine, "CreateTxnForDeleteSelection: unsupported action!");
|
|
#endif
|
|
|
|
nsresult result;
|
|
nsCOMPtr<nsISelection> selection;
|
|
nsCOMPtr<nsISelectionController> selCon = do_QueryReferent(mSelConWeak);
|
|
if (!selCon) return NS_ERROR_NOT_INITIALIZED;
|
|
result = selCon->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(selection));
|
|
if ((NS_SUCCEEDED(result)) && selection)
|
|
{
|
|
// Check whether the selection is collapsed and we should do nothing:
|
|
PRBool isCollapsed;
|
|
result = (selection->GetIsCollapsed(&isCollapsed));
|
|
if (NS_SUCCEEDED(result) && isCollapsed && aAction == eNone)
|
|
return NS_OK;
|
|
|
|
// allocate the out-param transaction
|
|
result = TransactionFactory::GetNewTransaction(EditAggregateTxn::GetCID(), (EditTxn **)aTxn);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
|
|
nsCOMPtr<nsIEnumerator> enumerator;
|
|
nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(selection));
|
|
result = selPrivate->GetEnumerator(getter_AddRefs(enumerator));
|
|
if (NS_SUCCEEDED(result) && enumerator)
|
|
{
|
|
for (enumerator->First(); NS_OK!=enumerator->IsDone(); enumerator->Next())
|
|
{
|
|
nsCOMPtr<nsISupports> currentItem;
|
|
result = enumerator->CurrentItem(getter_AddRefs(currentItem));
|
|
if ((NS_SUCCEEDED(result)) && (currentItem))
|
|
{
|
|
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
|
|
range->GetCollapsed(&isCollapsed);
|
|
if (PR_FALSE==isCollapsed)
|
|
{
|
|
DeleteRangeTxn *txn;
|
|
result = TransactionFactory::GetNewTransaction(DeleteRangeTxn::GetCID(), (EditTxn **)&txn);
|
|
if ((NS_SUCCEEDED(result)) && (nsnull!=txn))
|
|
{
|
|
txn->Init(this, range);
|
|
(*aTxn)->AppendChild(txn);
|
|
NS_RELEASE(txn);
|
|
}
|
|
else
|
|
result = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
else
|
|
{ // we have an insertion point. delete the thing in front of it or behind it, depending on aAction
|
|
result = CreateTxnForDeleteInsertionPoint(range, aAction, *aTxn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// if we didn't build the transaction correctly, destroy the out-param transaction so we don't leak it.
|
|
if (NS_FAILED(result))
|
|
{
|
|
NS_IF_RELEASE(*aTxn);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
//XXX: currently, this doesn't handle edge conditions because GetNext/GetPrior are not implemented
|
|
NS_IMETHODIMP
|
|
nsEditor::CreateTxnForDeleteInsertionPoint(nsIDOMRange *aRange,
|
|
nsIEditor::EDirection
|
|
aAction,
|
|
EditAggregateTxn *aTxn)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
PRBool isFirst;
|
|
PRBool isLast;
|
|
PRInt32 offset;
|
|
|
|
// get the node and offset of the insertion point
|
|
nsresult result = aRange->GetStartContainer(getter_AddRefs(node));
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
result = aRange->GetStartOffset(&offset);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
// determine if the insertion point is at the beginning, middle, or end of the node
|
|
nsCOMPtr<nsIDOMCharacterData> nodeAsText;
|
|
nodeAsText = do_QueryInterface(node);
|
|
|
|
if (nodeAsText)
|
|
{
|
|
PRUint32 count;
|
|
nodeAsText->GetLength(&count);
|
|
isFirst = PRBool(0==offset);
|
|
isLast = PRBool(count==(PRUint32)offset);
|
|
}
|
|
else
|
|
{
|
|
// get the child list and count
|
|
nsCOMPtr<nsIDOMNodeList>childList;
|
|
PRUint32 count=0;
|
|
result = node->GetChildNodes(getter_AddRefs(childList));
|
|
if ((NS_SUCCEEDED(result)) && childList)
|
|
{
|
|
childList->GetLength(&count);
|
|
}
|
|
isFirst = PRBool(0==offset);
|
|
isLast = PRBool((count-1)==(PRUint32)offset);
|
|
}
|
|
// XXX: if isFirst && isLast, then we'll need to delete the node
|
|
// as well as the 1 child
|
|
|
|
// build a transaction for deleting the appropriate data
|
|
// XXX: this has to come from rule section
|
|
if ((ePrevious==aAction) && (PR_TRUE==isFirst))
|
|
{ // we're backspacing from the beginning of the node. Delete the first thing to our left
|
|
nsCOMPtr<nsIDOMNode> priorNode;
|
|
result = GetPriorNode(node, PR_TRUE, getter_AddRefs(priorNode));
|
|
if ((NS_SUCCEEDED(result)) && priorNode)
|
|
{ // there is a priorNode, so delete it's last child (if text content, delete the last char.)
|
|
// if it has no children, delete it
|
|
nsCOMPtr<nsIDOMCharacterData> priorNodeAsText;
|
|
priorNodeAsText = do_QueryInterface(priorNode);
|
|
if (priorNodeAsText)
|
|
{
|
|
PRUint32 length=0;
|
|
priorNodeAsText->GetLength(&length);
|
|
if (0<length)
|
|
{
|
|
DeleteTextTxn *txn;
|
|
result = CreateTxnForDeleteText(priorNodeAsText, length-1, 1, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
aTxn->AppendChild(txn);
|
|
NS_RELEASE(txn);
|
|
}
|
|
}
|
|
else
|
|
{ // XXX: can you have an empty text node? If so, what do you do?
|
|
printf("ERROR: found a text node with 0 characters\n");
|
|
result = NS_ERROR_UNEXPECTED;
|
|
}
|
|
}
|
|
else
|
|
{ // priorNode is not text, so tell it's parent to delete it
|
|
DeleteElementTxn *txn;
|
|
result = CreateTxnForDeleteElement(priorNode, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
aTxn->AppendChild(txn);
|
|
NS_RELEASE(txn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if ((nsIEditor::eNext==aAction) && (PR_TRUE==isLast))
|
|
{ // we're deleting from the end of the node. Delete the first thing to our right
|
|
nsCOMPtr<nsIDOMNode> nextNode;
|
|
result = GetNextNode(node, PR_TRUE, getter_AddRefs(nextNode));
|
|
if ((NS_SUCCEEDED(result)) && nextNode)
|
|
{ // there is a nextNode, so delete it's first child (if text content, delete the first char.)
|
|
// if it has no children, delete it
|
|
nsCOMPtr<nsIDOMCharacterData> nextNodeAsText;
|
|
nextNodeAsText = do_QueryInterface(nextNode);
|
|
if (nextNodeAsText)
|
|
{
|
|
PRUint32 length=0;
|
|
nextNodeAsText->GetLength(&length);
|
|
if (0<length)
|
|
{
|
|
DeleteTextTxn *txn;
|
|
result = CreateTxnForDeleteText(nextNodeAsText, 0, 1, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
aTxn->AppendChild(txn);
|
|
NS_RELEASE(txn);
|
|
}
|
|
}
|
|
else
|
|
{ // XXX: can you have an empty text node? If so, what do you do?
|
|
printf("ERROR: found a text node with 0 characters\n");
|
|
result = NS_ERROR_UNEXPECTED;
|
|
}
|
|
}
|
|
else
|
|
{ // nextNode is not text, so tell it's parent to delete it
|
|
DeleteElementTxn *txn;
|
|
result = CreateTxnForDeleteElement(nextNode, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
aTxn->AppendChild(txn);
|
|
NS_RELEASE(txn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (nodeAsText)
|
|
{ // we have text, so delete a char at the proper offset
|
|
if (nsIEditor::ePrevious==aAction) {
|
|
offset --;
|
|
}
|
|
DeleteTextTxn *txn;
|
|
result = CreateTxnForDeleteText(nodeAsText, offset, 1, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
aTxn->AppendChild(txn);
|
|
NS_RELEASE(txn);
|
|
}
|
|
}
|
|
else
|
|
{ // we're either deleting a node or some text, need to dig into the next/prev node to find out
|
|
nsCOMPtr<nsIDOMNode> selectedNode;
|
|
if (ePrevious==aAction)
|
|
{
|
|
result = GetPriorNode(node, offset, PR_TRUE, getter_AddRefs(selectedNode));
|
|
}
|
|
else if (eNext==aAction)
|
|
{
|
|
result = GetNextNode(node, offset, PR_TRUE, getter_AddRefs(selectedNode));
|
|
}
|
|
if (NS_FAILED(result)) { return result; }
|
|
if (selectedNode)
|
|
{
|
|
nsCOMPtr<nsIDOMCharacterData> selectedNodeAsText;
|
|
selectedNodeAsText = do_QueryInterface(selectedNode);
|
|
if (selectedNodeAsText)
|
|
{ // we are deleting from a text node, so do a text deletion
|
|
PRInt32 begin = 0; // default for forward delete
|
|
if (ePrevious==aAction)
|
|
{
|
|
PRUint32 length=0;
|
|
selectedNodeAsText->GetLength(&length);
|
|
if (0<length)
|
|
begin = length-1;
|
|
}
|
|
DeleteTextTxn *delTextTxn;
|
|
result = CreateTxnForDeleteText(selectedNodeAsText, begin, 1, &delTextTxn);
|
|
if (NS_FAILED(result)) { return result; }
|
|
if (!delTextTxn) { return NS_ERROR_NULL_POINTER; }
|
|
aTxn->AppendChild(delTextTxn);
|
|
NS_RELEASE(delTextTxn);
|
|
}
|
|
else
|
|
{
|
|
DeleteElementTxn *delElementTxn;
|
|
result = CreateTxnForDeleteElement(selectedNode, &delElementTxn);
|
|
if (NS_FAILED(result)) { return result; }
|
|
if (!delElementTxn) { return NS_ERROR_NULL_POINTER; }
|
|
aTxn->AppendChild(delElementTxn);
|
|
NS_RELEASE(delElementTxn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::CreateRange(nsIDOMNode *aStartParent, PRInt32 aStartOffset,
|
|
nsIDOMNode *aEndParent, PRInt32 aEndOffset,
|
|
nsIDOMRange **aRange)
|
|
{
|
|
nsresult result;
|
|
result = nsComponentManager::CreateInstance(kCDOMRangeCID, nsnull,
|
|
NS_GET_IID(nsIDOMRange),
|
|
(void **)aRange);
|
|
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
if (!*aRange)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
result = (*aRange)->SetStart(aStartParent, aStartOffset);
|
|
|
|
if (NS_SUCCEEDED(result))
|
|
result = (*aRange)->SetEnd(aEndParent, aEndOffset);
|
|
|
|
if (NS_FAILED(result))
|
|
{
|
|
NS_RELEASE((*aRange));
|
|
*aRange = 0;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetFirstNodeInRange(nsIDOMRange *aRange, nsIDOMNode **aNode)
|
|
{
|
|
// Note: this might return a node that is outside of the range.
|
|
// Use caqrefully.
|
|
if (!aRange || !aNode) return NS_ERROR_NULL_POINTER;
|
|
|
|
*aNode = nsnull;
|
|
|
|
nsCOMPtr<nsIDOMNode> startParent;
|
|
nsresult res = aRange->GetStartContainer(getter_AddRefs(startParent));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!startParent) return NS_ERROR_FAILURE;
|
|
|
|
PRInt32 offset;
|
|
res = aRange->GetStartOffset(&offset);
|
|
if (NS_FAILED(res)) return res;
|
|
|
|
nsCOMPtr<nsIDOMNode> child = GetChildAt(startParent, offset);
|
|
if (!child) return NS_ERROR_FAILURE;
|
|
|
|
*aNode = child.get();
|
|
NS_ADDREF(*aNode);
|
|
|
|
return res;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::AppendNodeToSelectionAsRange(nsIDOMNode *aNode)
|
|
{
|
|
if (!aNode) return NS_ERROR_NULL_POINTER;
|
|
nsCOMPtr<nsISelection> selection;
|
|
nsresult res = GetSelection(getter_AddRefs(selection));
|
|
if (NS_FAILED(res)) return res;
|
|
if(!selection) return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIDOMNode> parentNode;
|
|
res = aNode->GetParentNode(getter_AddRefs(parentNode));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!parentNode) return NS_ERROR_NULL_POINTER;
|
|
|
|
PRInt32 offset;
|
|
res = GetChildOffset(aNode, parentNode, offset);
|
|
if (NS_FAILED(res)) return res;
|
|
|
|
nsCOMPtr<nsIDOMRange> range;
|
|
res = CreateRange(parentNode, offset, parentNode, offset+1, getter_AddRefs(range));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!range) return NS_ERROR_NULL_POINTER;
|
|
|
|
return selection->AddRange(range);
|
|
}
|
|
|
|
nsresult nsEditor::ClearSelection()
|
|
{
|
|
nsCOMPtr<nsISelection> selection;
|
|
nsresult res = nsEditor::GetSelection(getter_AddRefs(selection));
|
|
if (NS_FAILED(res)) return res;
|
|
if (!selection) return NS_ERROR_FAILURE;
|
|
return selection->RemoveAllRanges();
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::CreateHTMLContent(const nsAReadableString& aTag, nsIContent** aContent)
|
|
{
|
|
nsresult rv;
|
|
|
|
NS_WITH_SERVICE(nsIElementFactory, elementFactory,
|
|
NS_ELEMENT_FACTORY_CONTRACTID_PREFIX"http://www.w3.org/1999/xhtml" , &rv);
|
|
if (!elementFactory)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIDOMDocument> tempDoc;
|
|
nsCOMPtr<nsIDocument> doc;
|
|
|
|
rv = GetDocument(getter_AddRefs(tempDoc));
|
|
if (NS_FAILED(rv) || !tempDoc)
|
|
return rv?rv:NS_ERROR_FAILURE;
|
|
|
|
doc = do_QueryInterface(tempDoc);
|
|
|
|
nsCOMPtr<nsINodeInfoManager> nodeInfoManager;
|
|
rv = doc->GetNodeInfoManager(*getter_AddRefs(nodeInfoManager));
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
NS_ENSURE_TRUE(nodeInfoManager, NS_ERROR_FAILURE);
|
|
|
|
nsCOMPtr<nsINodeInfo> nodeInfo;
|
|
rv = nodeInfoManager->GetNodeInfo(aTag, nsnull, kNameSpaceID_None,*getter_AddRefs(nodeInfo));
|
|
|
|
if (NS_FAILED(rv) || !nodeInfo)
|
|
return rv?rv:NS_ERROR_FAILURE;
|
|
|
|
rv = elementFactory->CreateInstanceByTag(nodeInfo, aContent);
|
|
|
|
if (NS_FAILED(rv) || !aContent)
|
|
return rv?rv:NS_ERROR_FAILURE;
|
|
else
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
#ifdef XP_WIN32
|
|
//in addition to returning a version number for this module,
|
|
//this also provides a convenient hook for the preloader
|
|
//to keep (some if not all) of the module resident.
|
|
extern "C" __declspec(dllexport) float GetVersionNumber(void) {
|
|
return 1.0;
|
|
}
|
|
#endif
|
|
|