mirror of
https://github.com/mozilla/gecko-dev.git
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1566 lines
44 KiB
C++
1566 lines
44 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsIDOMDocument.h"
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#include "nsEditor.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 "nsIDOMNodeList.h"
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#include "nsIDOMRange.h"
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#include "nsIDocument.h"
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#include "nsIServiceManager.h"
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#include "nsEditFactory.h"
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#include "nsTextEditFactory.h"
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#include "nsEditorCID.h"
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#include "nsTransactionManagerCID.h"
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#include "nsITransactionManager.h"
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#include "nsIPresShell.h"
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#include "nsIViewManager.h"
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#include "nsIDOMSelection.h"
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#include "nsIEnumerator.h"
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#include "nsIAtom.h"
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#include "nsVoidArray.h"
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#include "nsICaret.h"
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#include "nsIContent.h" // for temp method GetColIndexForCell, to be removed
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#include "nsITableCellLayout.h" // for temp method GetColIndexForCell, to be removed
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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 "ChangeAttributeTxn.h"
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#include "CreateElementTxn.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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static NS_DEFINE_IID(kIContentIID, NS_ICONTENT_IID);
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static NS_DEFINE_IID(kIDOMTextIID, NS_IDOMTEXT_IID);
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static NS_DEFINE_IID(kIDOMElementIID, NS_IDOMELEMENT_IID);
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static NS_DEFINE_IID(kIDOMNodeIID, NS_IDOMNODE_IID);
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static NS_DEFINE_IID(kIDOMSelectionIID, NS_IDOMSELECTION_IID);
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static NS_DEFINE_IID(kIDOMRangeIID, NS_IDOMRANGE_IID);
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static NS_DEFINE_IID(kIDOMDocumentIID, NS_IDOMDOCUMENT_IID);
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static NS_DEFINE_IID(kIDocumentIID, NS_IDOCUMENT_IID);
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static NS_DEFINE_IID(kIFactoryIID, NS_IFACTORY_IID);
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static NS_DEFINE_IID(kIEditFactoryIID, NS_IEDITORFACTORY_IID);
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static NS_DEFINE_IID(kIEditorIID, NS_IEDITOR_IID);
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static NS_DEFINE_IID(kIEditorSupportIID, NS_IEDITORSUPPORT_IID);
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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static NS_DEFINE_IID(kEditorCID, NS_EDITOR_CID);
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static NS_DEFINE_CID(kTextEditorCID, NS_TEXTEDITOR_CID);
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// transaction manager
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static NS_DEFINE_IID(kITransactionManagerIID, NS_ITRANSACTIONMANAGER_IID);
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static NS_DEFINE_CID(kCTransactionManagerFactoryCID, NS_TRANSACTION_MANAGER_FACTORY_CID);
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// transactions
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static NS_DEFINE_IID(kEditAggregateTxnIID, EDIT_AGGREGATE_TXN_IID);
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static NS_DEFINE_IID(kInsertTextTxnIID, INSERT_TEXT_TXN_IID);
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static NS_DEFINE_IID(kDeleteTextTxnIID, DELETE_TEXT_TXN_IID);
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static NS_DEFINE_IID(kCreateElementTxnIID, CREATE_ELEMENT_TXN_IID);
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static NS_DEFINE_IID(kDeleteElementTxnIID, DELETE_ELEMENT_TXN_IID);
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static NS_DEFINE_IID(kDeleteRangeTxnIID, DELETE_RANGE_TXN_IID);
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static NS_DEFINE_IID(kChangeAttributeTxnIID,CHANGE_ATTRIBUTE_TXN_IID);
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static NS_DEFINE_IID(kSplitElementTxnIID, SPLIT_ELEMENT_TXN_IID);
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static NS_DEFINE_IID(kJoinElementTxnIID, JOIN_ELEMENT_TXN_IID);
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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
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#define TRANSACTION_MANAGER_DLL "libtxmgr.so"
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#endif
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#endif
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/* ----- TEST METHODS DECLARATIONS ----- */
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// Methods defined here are TEMPORARY
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nsresult
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GetColIndexForCell(nsIPresShell *aPresShell, nsIDOMNode *aCellNode, PRInt32 &aCellIndex);
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/* ----- END TEST METHOD DECLARATIONS ----- */
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PRInt32 nsEditor::gInstanceCount = 0;
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//monitor for the editor
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PRMonitor *getEditorMonitor() //if more than one person asks for the monitor at the same time for the FIRST time, we are screwed
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{
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static PRMonitor *ns_editlock = nsnull;
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if (nsnull == ns_editlock)
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{
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ns_editlock = (PRMonitor *)1; //how long will the next line take? lets cut down on the chance of reentrancy
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ns_editlock = PR_NewMonitor();
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}
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else if ((PRMonitor *)1 == ns_editlock)
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return getEditorMonitor();
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return ns_editlock;
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}
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/*
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we must be good providers of factories ect. this is where to put ALL editor exports
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*/
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//BEGIN EXPORTS
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extern "C" NS_EXPORT nsresult NSGetFactory(const nsCID & aClass,
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nsISupports * aServiceMgr,
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nsIFactory ** aFactory)
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{
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if (nsnull == aFactory) {
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return NS_ERROR_NULL_POINTER;
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}
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*aFactory = nsnull;
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if (aClass.Equals(kEditorCID)) {
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return GetEditFactory(aFactory, aClass);
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}
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else if (aClass.Equals(kTextEditorCID)) {
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return GetTextEditFactory(aFactory, aClass);
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}
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return NS_NOINTERFACE;
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}
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extern "C" NS_EXPORT PRBool
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NSCanUnload(void)
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{
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return nsEditor::gInstanceCount; //I have no idea. I am copying code here
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}
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extern "C" NS_EXPORT nsresult
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NSRegisterSelf(const char *path)
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{
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return nsRepository::RegisterFactory(kIEditFactoryIID, path,
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PR_TRUE, PR_TRUE); //this will register the factory with the xpcom dll.
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}
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extern "C" NS_EXPORT nsresult
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NSUnregisterSelf(const char *path)
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{
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return nsRepository::UnregisterFactory(kIEditFactoryIID, path);//this will unregister the factory with the xpcom dll.
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}
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//END EXPORTS
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//class implementations are in order they are declared in nsEditor.h
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nsEditor::nsEditor()
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{
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//initialize member variables here
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NS_INIT_REFCNT();
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PR_EnterMonitor(getEditorMonitor());
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gInstanceCount++;
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PR_ExitMonitor(getEditorMonitor());
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}
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nsEditor::~nsEditor()
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{
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NS_IF_RELEASE(mPresShell);
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NS_IF_RELEASE(mViewManager);
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}
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//BEGIN nsIEditor interface implementations
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NS_IMPL_ADDREF(nsEditor)
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NS_IMPL_RELEASE(nsEditor)
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nsresult
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nsEditor::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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if (nsnull == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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if (aIID.Equals(kISupportsIID)) {
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nsIEditor *tmp = this;
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nsISupports *tmp2 = tmp;
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*aInstancePtr = (void*)tmp2;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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if (aIID.Equals(kIEditorIID)) {
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*aInstancePtr = (void*)(nsIEditor*)this;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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if (aIID.Equals(kIEditorSupportIID)) {
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*aInstancePtr = (void*)(nsIEditorSupport*)this;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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nsresult
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nsEditor::GetDocument(nsIDOMDocument **aDoc)
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{
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*aDoc = nsnull; // init out param
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NS_PRECONDITION(mDoc, "bad state, null mDoc");
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if (!mDoc)
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return NS_ERROR_NULL_POINTER;
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return mDoc->QueryInterface(kIDOMDocumentIID, (void **)aDoc);
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}
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nsresult
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nsEditor::GetSelection(nsIDOMSelection **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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nsresult result = mPresShell->GetSelection(aSelection); // does an addref
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return result;
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}
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nsresult
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nsEditor::Init(nsIDOMDocument *aDoc, nsIPresShell* aPresShell)
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{
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NS_PRECONDITION(nsnull!=aDoc && nsnull!=aPresShell, "bad arg");
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if ((nsnull==aDoc) || (nsnull==aPresShell))
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return NS_ERROR_NULL_POINTER;
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mDoc = do_QueryInterface(aDoc);
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mPresShell = aPresShell;
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NS_ADDREF(mPresShell);
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mPresShell->GetViewManager(&mViewManager);
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mUpdateCount=0;
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InsertTextTxn::ClassInit();
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/* Show the caret */
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nsCOMPtr<nsICaret> caret;
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if (NS_SUCCEEDED(mPresShell->GetCaret(getter_AddRefs(caret))))
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{
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caret->SetCaretVisible(PR_TRUE);
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caret->SetCaretReadOnly(PR_FALSE);
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}
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NS_POSTCONDITION(mDoc && mPresShell, "bad state");
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return NS_OK;
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}
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nsresult
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nsEditor::EnableUndo(PRBool aEnable)
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{
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nsITransactionManager *txnMgr = 0;
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nsresult result=NS_OK;
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/** -- temp code until the txn mgr auto-registers -- **/
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nsRepository::RegisterFactory(kCTransactionManagerFactoryCID,
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TRANSACTION_MANAGER_DLL, PR_FALSE, PR_FALSE);
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/** -- end temp code -- **/
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if (PR_TRUE==aEnable)
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{
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if (!mTxnMgr)
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{
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result = nsRepository::CreateInstance(kCTransactionManagerFactoryCID,
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nsnull,
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kITransactionManagerIID, (void **)&txnMgr);
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if (NS_FAILED(result) || !txnMgr) {
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printf("ERROR: Failed to get TransactionManager instance.\n");
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return NS_ERROR_NOT_AVAILABLE;
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}
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mTxnMgr = do_QueryInterface(txnMgr); // CreateInstance refCounted the instance for us, remember it in an nsCOMPtr
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}
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}
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else
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{ // disable the transaction manager if it is enabled
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if (mTxnMgr)
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{
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mTxnMgr = do_QueryInterface(nsnull);
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}
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}
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return result;
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}
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nsresult nsEditor::CanUndo(PRBool &aIsEnabled, PRBool &aCanUndo)
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{
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aIsEnabled = ((PRBool)((nsITransactionManager *)0!=mTxnMgr.get()));
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if (aIsEnabled)
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{
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PRInt32 numTxns=0;
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mTxnMgr->GetNumberOfUndoItems(&numTxns);
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aCanUndo = ((PRBool)(0==numTxns));
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}
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else {
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aCanUndo = PR_FALSE;
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}
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return NS_OK;
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}
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nsresult nsEditor::CanRedo(PRBool &aIsEnabled, PRBool &aCanRedo)
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{
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aIsEnabled = ((PRBool)((nsITransactionManager *)0!=mTxnMgr.get()));
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if (aIsEnabled)
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{
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PRInt32 numTxns=0;
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mTxnMgr->GetNumberOfRedoItems(&numTxns);
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aCanRedo = ((PRBool)(0==numTxns));
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}
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else {
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aCanRedo = PR_FALSE;
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}
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return NS_OK;
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}
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nsresult
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nsEditor::SetProperties(nsVoidArray *aPropList)
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{
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return NS_OK;
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}
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nsresult
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nsEditor::GetProperties(nsVoidArray *aPropList)
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{
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return NS_OK;
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}
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nsresult
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nsEditor::SetAttribute(nsIDOMElement *aElement, const nsString& aAttribute, const nsString& aValue)
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{
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ChangeAttributeTxn *txn;
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nsresult result = CreateTxnForSetAttribute(aElement, aAttribute, aValue, &txn);
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if (NS_SUCCEEDED(result)) {
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result = Do(txn);
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}
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return result;
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}
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nsresult
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nsEditor::CreateTxnForSetAttribute(nsIDOMElement *aElement,
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const nsString& aAttribute,
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const nsString& aValue,
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ChangeAttributeTxn ** aTxn)
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{
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nsresult result = NS_ERROR_NULL_POINTER;
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if (nsnull != aElement)
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{
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result = TransactionFactory::GetNewTransaction(kChangeAttributeTxnIID, (EditTxn **)aTxn);
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if (NS_SUCCEEDED(result)) {
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result = (*aTxn)->Init(this, aElement, aAttribute, aValue, PR_FALSE);
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}
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}
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return result;
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}
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nsresult
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nsEditor::GetAttributeValue(nsIDOMElement *aElement,
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const nsString& aAttribute,
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nsString& aResultValue,
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PRBool& aResultIsSet)
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{
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aResultIsSet=PR_FALSE;
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nsresult result=NS_OK;
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if (nsnull!=aElement)
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{
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nsCOMPtr<nsIDOMAttr> attNode;
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result = aElement->GetAttributeNode(aAttribute, getter_AddRefs(attNode));
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if ((NS_SUCCEEDED(result)) && attNode)
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{
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attNode->GetSpecified(&aResultIsSet);
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attNode->GetValue(aResultValue);
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}
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}
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return result;
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}
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nsresult
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nsEditor::RemoveAttribute(nsIDOMElement *aElement, const nsString& aAttribute)
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{
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ChangeAttributeTxn *txn;
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nsresult result = CreateTxnForRemoveAttribute(aElement, aAttribute, &txn);
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if (NS_SUCCEEDED(result)) {
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result = Do(txn);
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}
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return result;
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}
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nsresult
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nsEditor::CreateTxnForRemoveAttribute(nsIDOMElement *aElement,
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const nsString& aAttribute,
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ChangeAttributeTxn ** aTxn)
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{
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nsresult result = NS_ERROR_NULL_POINTER;
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if (nsnull != aElement)
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{
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result = TransactionFactory::GetNewTransaction(kChangeAttributeTxnIID, (EditTxn **)aTxn);
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if (NS_SUCCEEDED(result))
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{
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nsAutoString value;
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result = (*aTxn)->Init(this, aElement, aAttribute, value, PR_TRUE);
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}
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}
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return result;
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}
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nsresult
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nsEditor::InsertBreak(PRBool aCtrlKey)
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{
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if (aCtrlKey)
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{
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// nsSelectionRange range;
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//mSelectionP->GetRange(&range);
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}
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else
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{
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}
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return NS_OK;
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}
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//END nsIEditorInterfaces
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//BEGIN nsEditor Private methods
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nsresult
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nsEditor::GetFirstNodeOfType(nsIDOMNode *aStartNode, const nsString &aTag, nsIDOMNode **aResult)
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{
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nsresult result=NS_OK;
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if (!mDoc)
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return NS_ERROR_NULL_POINTER;
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if (!aResult)
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return NS_ERROR_NULL_POINTER;
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/* If no node set, get root node */
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|
nsCOMPtr<nsIDOMNode> node;
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nsCOMPtr<nsIDOMElement> element;
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|
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if (nsnull==aStartNode)
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{
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mDoc->GetDocumentElement(getter_AddRefs(element));
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result = element->QueryInterface(kIDOMNodeIID,getter_AddRefs(node));
|
|
if (NS_FAILED(result))
|
|
return result;
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|
if (!node)
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return NS_ERROR_NULL_POINTER;
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}
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else
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node = do_QueryInterface(aStartNode);
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*aResult = nsnull;
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nsCOMPtr<nsIDOMNode> childNode;
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result = node->GetFirstChild(getter_AddRefs(childNode));
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while (childNode)
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{
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result = childNode->QueryInterface(kIDOMNodeIID,getter_AddRefs(element));
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nsAutoString tag;
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if (NS_SUCCEEDED(result) && (element))
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{
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element->GetTagName(tag);
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if (PR_TRUE==aTag.Equals(tag))
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{
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return (childNode->QueryInterface(kIDOMNodeIID,(void **) aResult)); // does the addref
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}
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else
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{
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nsresult result = GetFirstNodeOfType(childNode, aTag, aResult);
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if (nsnull!=*aResult)
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return result;
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}
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}
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nsCOMPtr<nsIDOMNode> temp = childNode;
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temp->GetNextSibling(getter_AddRefs(childNode));
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}
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return NS_ERROR_FAILURE;
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}
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nsresult
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nsEditor::GetFirstTextNode(nsIDOMNode *aNode, nsIDOMNode **aRetNode)
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|
{
|
|
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;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::Do(nsITransaction *aTxn)
|
|
{
|
|
nsresult result = NS_OK;
|
|
if (nsnull!=aTxn)
|
|
{
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
result = mTxnMgr->Do(aTxn);
|
|
}
|
|
else
|
|
{
|
|
result = aTxn->Do();
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::Undo(PRUint32 aCount)
|
|
{
|
|
nsresult result = NS_OK;
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
PRUint32 i=0;
|
|
for ( ; i<aCount; i++)
|
|
{
|
|
result = mTxnMgr->Undo();
|
|
if (NS_FAILED(result))
|
|
break;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::Redo(PRUint32 aCount)
|
|
{
|
|
nsresult result = NS_OK;
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
PRUint32 i=0;
|
|
for ( ; i<aCount; i++)
|
|
{
|
|
result = mTxnMgr->Redo();
|
|
if (NS_FAILED(result))
|
|
break;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::BeginTransaction()
|
|
{
|
|
NS_PRECONDITION(mUpdateCount>=0, "bad state");
|
|
if (nsnull!=mViewManager)
|
|
{
|
|
if (0==mUpdateCount)
|
|
mViewManager->DisableRefresh();
|
|
mUpdateCount++;
|
|
}
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
mTxnMgr->BeginBatch();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::EndTransaction()
|
|
{
|
|
NS_PRECONDITION(mUpdateCount>0, "bad state");
|
|
if (nsnull!=mViewManager)
|
|
{
|
|
mUpdateCount--;
|
|
if (0==mUpdateCount)
|
|
mViewManager->EnableRefresh();
|
|
}
|
|
if ((nsITransactionManager *)nsnull!=mTxnMgr.get())
|
|
{
|
|
mTxnMgr->EndBatch();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsEditor::ScrollIntoView(PRBool aScrollToBegin)
|
|
{
|
|
return NS_OK; //mjudge we should depricate this method
|
|
/* nsresult result;
|
|
if (mPresShell)
|
|
{
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(result) && selection)
|
|
{
|
|
// get the content of the start of the selection
|
|
nsCOMPtr<nsIDOMNode>startNode;
|
|
PRInt32 offset;
|
|
result = selection->GetAnchorNodeAndOffset(getter_AddRefs(startNode), &offset);
|
|
if (NS_SUCCEEDED(result) && startNode)
|
|
{ // get the content from the node
|
|
nsCOMPtr<nsIContent>startContent;
|
|
result = startNode->QueryInterface(kIContentIID, getter_AddRefs(startContent));
|
|
if (NS_SUCCEEDED(result) && startContent)
|
|
{ // get its frame
|
|
nsIFrame *frame=nsnull;
|
|
result = mPresShell->GetPrimaryFrameFor(startContent, &frame);
|
|
if (NS_SUCCEEDED(result) && frame)
|
|
{ // scroll that frame into view
|
|
result = mPresShell->ScrollFrameIntoView(frame,
|
|
0, NS_PRESSHELL_SCROLL_TOP |NS_PRESSHELL_SCROLL_ANYWHERE,
|
|
0, NS_PRESSHELL_SCROLL_LEFT|NS_PRESSHELL_SCROLL_ANYWHERE);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
result = NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
return result;
|
|
*/
|
|
}
|
|
|
|
|
|
nsresult nsEditor::CreateNode(const nsString& aTag,
|
|
nsIDOMNode * aParent,
|
|
PRInt32 aPosition)
|
|
{
|
|
CreateElementTxn *txn;
|
|
nsresult result = CreateTxnForCreateElement(aTag, aParent, aPosition, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult nsEditor::CreateTxnForCreateElement(const nsString& aTag,
|
|
nsIDOMNode *aParent,
|
|
PRInt32 aPosition,
|
|
CreateElementTxn ** aTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aParent)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kCreateElementTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aTag, aParent, aPosition);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult nsEditor::InsertNode(nsIDOMNode * aNode,
|
|
nsIDOMNode * aParent,
|
|
PRInt32 aPosition)
|
|
{
|
|
// GetLayoutObjectFor test
|
|
nsAutoString cellTag("TD");
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
if (NS_SUCCEEDED(GetFirstNodeOfType(nsnull, cellTag, getter_AddRefs(node))))
|
|
{
|
|
PRInt32 cellIndex;
|
|
GetColIndexForCell(mPresShell, node, cellIndex);
|
|
printf("%d\n", cellIndex);
|
|
}
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
nsresult nsEditor::DeleteNode(nsIDOMNode * aElement)
|
|
{
|
|
DeleteElementTxn *txn;
|
|
nsresult result = CreateTxnForDeleteElement(aElement, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult nsEditor::CreateTxnForDeleteElement(nsIDOMNode * aElement,
|
|
DeleteElementTxn ** aTxn)
|
|
{
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aElement)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kDeleteElementTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(aElement);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::InsertText(const nsString& aStringToInsert)
|
|
{
|
|
nsresult result;
|
|
EditAggregateTxn *aggTxn;
|
|
result = TransactionFactory::GetNewTransaction(kEditAggregateTxnIID, (EditTxn **)&aggTxn);
|
|
if ((NS_FAILED(result)) || (nsnull==aggTxn)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
aggTxn->SetName(InsertTextTxn::gInsertTextTxnName);
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(result) && selection)
|
|
{
|
|
PRBool collapsed;
|
|
result = selection->IsCollapsed(&collapsed);
|
|
if (NS_SUCCEEDED(result) && !collapsed) {
|
|
EditAggregateTxn *delSelTxn;
|
|
result = CreateTxnForDeleteSelection(nsIEditor::eLTR, &delSelTxn);
|
|
if (NS_SUCCEEDED(result) && delSelTxn) {
|
|
aggTxn->AppendChild(delSelTxn);
|
|
}
|
|
}
|
|
}
|
|
|
|
InsertTextTxn *txn;
|
|
result = CreateTxnForInsertText(aStringToInsert, &txn);
|
|
if ((NS_SUCCEEDED(result)) && txn) {
|
|
aggTxn->AppendChild(txn);
|
|
result = Do(aggTxn);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult nsEditor::CreateTxnForInsertText(const nsString & aStringToInsert,
|
|
InsertTextTxn ** aTxn)
|
|
{
|
|
nsresult result;
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
if ((NS_SUCCEEDED(result)) && selection)
|
|
{
|
|
result = NS_ERROR_UNEXPECTED;
|
|
nsCOMPtr<nsIEnumerator> enumerator;
|
|
enumerator = do_QueryInterface(selection,&result);
|
|
if (enumerator)
|
|
{
|
|
enumerator->First();
|
|
nsISupports *currentItem;
|
|
result = enumerator->CurrentItem(¤tItem);
|
|
if ((NS_SUCCEEDED(result)) && (nsnull!=currentItem))
|
|
{
|
|
result = NS_ERROR_UNEXPECTED;
|
|
// XXX: we'll want to deleteRange if the selection isn't just an insertion point
|
|
// for now, just insert text after the start of the first node
|
|
nsCOMPtr<nsIDOMRange> range(currentItem);
|
|
if (range)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
result = range->GetStartParent(getter_AddRefs(node));
|
|
if ((NS_SUCCEEDED(result)) && (node))
|
|
{
|
|
result = NS_ERROR_UNEXPECTED;
|
|
nsCOMPtr<nsIDOMCharacterData> nodeAsText;
|
|
nodeAsText = do_QueryInterface(node,&result);
|
|
if (nodeAsText)
|
|
{
|
|
PRInt32 offset;
|
|
range->GetStartOffset(&offset);
|
|
result = TransactionFactory::GetNewTransaction(kInsertTextTxnIID, (EditTxn **)aTxn);
|
|
if (nsnull!=*aTxn) {
|
|
result = (*aTxn)->Init(nodeAsText, offset, aStringToInsert, mPresShell);
|
|
}
|
|
else
|
|
result = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult nsEditor::DeleteText(nsIDOMCharacterData *aElement,
|
|
PRUint32 aOffset,
|
|
PRUint32 aLength)
|
|
{
|
|
DeleteTextTxn *txn;
|
|
nsresult result = CreateTxnForDeleteText(aElement, aOffset, aLength, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
nsresult nsEditor::CreateTxnForDeleteText(nsIDOMCharacterData *aElement,
|
|
PRUint32 aOffset,
|
|
PRUint32 aLength,
|
|
DeleteTextTxn **aTxn)
|
|
{
|
|
nsresult result=NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aElement)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kDeleteTextTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aElement, aOffset, aLength);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
// operates on selection
|
|
// deletes the selection (if not collapsed) and splits the current element
|
|
// or an ancestor of the current element
|
|
/* context-dependent behaviors
|
|
SELECTION ACTION
|
|
text node split text node (or a parent)
|
|
block element insert a <BR>
|
|
H1-H6 if at end, create a <P> following the header
|
|
*/
|
|
#if 0 // THIS CODE WILL BE REMOVED. WE ARE GOING TO IMPLEMENT
|
|
// A GENERIC HANDLER SYSTEM.
|
|
nsresult nsEditor::CreateTxnToHandleEnterKey(EditAggregateTxn **aTxn)
|
|
{
|
|
// allocate the out-param transaction
|
|
nsresult result = TransactionFactory::GetNewTransaction(kEditAggregateTxnIID, (EditTxn **)aTxn);
|
|
if (NS_FAILED(result))
|
|
{
|
|
return result;
|
|
}
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
if ((NS_SUCCEEDED(result)) && selection)
|
|
{
|
|
nsCOMPtr<nsIEnumerator> enumerator;
|
|
enumerator = selection;
|
|
if (enumerator)
|
|
{
|
|
// XXX: need to handle mutliple ranges here, probably by
|
|
// disallowing the operation
|
|
for (enumerator->First(); NS_OK!=enumerator->IsDone(); enumerator->Next())
|
|
{
|
|
nsISupports *currentItem=nsnull;
|
|
result = enumerator->CurrentItem(¤tItem);
|
|
if ((NS_SUCCEEDED(result)) && (currentItem))
|
|
{
|
|
nsCOMPtr<nsIDOMRange> range(currentItem);
|
|
PRBool isCollapsed;
|
|
range->GetIsCollapsed(&isCollapsed);
|
|
if(PR_FALSE==isCollapsed)
|
|
{
|
|
EditAggregateTxn *delSelTxn;
|
|
result = CreateTxnForDeleteSelection(nsIEditor::eLTR, &delSelTxn);
|
|
if ((NS_SUCCEEDED(result)) && (delSelTtxn)) {
|
|
(*aTxn)->AppendChild(delSelTtxn);
|
|
}
|
|
}
|
|
// at this point, we have a collapsed selection
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
result = range->GetStartParent(getter_AddRefs(node));
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
nsVoidArray parentFrameList;
|
|
result = GetParentFrameList(node, &parentFrameList);
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
EditAggregateTxn *enterKeyTxn;
|
|
result = CreateTxnForEnterKeyAtInsertionPoint(range, &enterKeyTxn));
|
|
if ((NS_SUCCEEDED(result)) && (enterKeyTxn)) {
|
|
(*aTxn)->AppendChild(enterKeyTxn);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// if anything along the way failed, delete the out-param transaction
|
|
if (NS_FAILED(result)) {
|
|
NS_IF_RELEASE(*aTxn);
|
|
}
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
#define DELETE_SELECTION_DOESNT_GO_THROUGH_RANGE
|
|
|
|
nsresult
|
|
nsEditor::DeleteSelection(nsIEditor::Direction aDir)
|
|
{
|
|
nsresult result;
|
|
#ifdef DELETE_SELECTION_DOESNT_GO_THROUGH_RANGE
|
|
EditAggregateTxn *txn;
|
|
result = CreateTxnForDeleteSelection(aDir, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
#else
|
|
// XXX Warning, this should be moved to a transaction since
|
|
// calling it this way means undo won't work.
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
if (NS_SUCCEEDED(result) && selection)
|
|
result = selection->DeleteFromDocument();
|
|
#endif
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult nsEditor::CreateTxnForDeleteSelection(nsIEditor::Direction aDir,
|
|
EditAggregateTxn ** aTxn)
|
|
{
|
|
if (!aTxn)
|
|
return NS_ERROR_NULL_POINTER;
|
|
*aTxn = nsnull;
|
|
|
|
nsresult result;
|
|
// allocate the out-param transaction
|
|
result = TransactionFactory::GetNewTransaction(kEditAggregateTxnIID, (EditTxn **)aTxn);
|
|
if (NS_FAILED(result)) {
|
|
return result;
|
|
}
|
|
nsCOMPtr<nsIDOMSelection> selection;
|
|
result = mPresShell->GetSelection(getter_AddRefs(selection));
|
|
if ((NS_SUCCEEDED(result)) && selection)
|
|
{
|
|
nsCOMPtr<nsIEnumerator> enumerator;
|
|
enumerator = do_QueryInterface(selection,&result);
|
|
if (enumerator)
|
|
{
|
|
for (enumerator->First(); NS_OK!=enumerator->IsDone(); enumerator->Next())
|
|
{
|
|
nsISupports *currentItem=nsnull;
|
|
result = enumerator->CurrentItem(¤tItem);
|
|
if ((NS_SUCCEEDED(result)) && (currentItem))
|
|
{
|
|
nsCOMPtr<nsIDOMRange> range(currentItem);
|
|
PRBool isCollapsed;
|
|
range->GetIsCollapsed(&isCollapsed);
|
|
if (PR_FALSE==isCollapsed)
|
|
{
|
|
DeleteRangeTxn *txn;
|
|
result = TransactionFactory::GetNewTransaction(kDeleteRangeTxnIID, (EditTxn **)&txn);
|
|
if ((NS_SUCCEEDED(result)) && (nsnull!=txn))
|
|
{
|
|
txn->Init(this, range);
|
|
(*aTxn)->AppendChild(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 aDir
|
|
result = CreateTxnForDeleteInsertionPoint(range, aDir, *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
|
|
nsresult
|
|
nsEditor::CreateTxnForDeleteInsertionPoint(nsIDOMRange *aRange,
|
|
nsIEditor::Direction aDir,
|
|
EditAggregateTxn *aTxn)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
PRBool isFirst;
|
|
PRBool isLast;
|
|
PRInt32 offset;
|
|
PRInt32 length=1;
|
|
|
|
// get the node and offset of the insertion point
|
|
nsresult result = aRange->GetStartParent(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, &result);
|
|
|
|
if (nodeAsText)
|
|
{
|
|
PRUint32 count;
|
|
nodeAsText->GetLength(&count);
|
|
isFirst = PRBool(0==offset);
|
|
isLast = PRBool(count==offset);
|
|
}
|
|
else
|
|
{
|
|
nsCOMPtr<nsIDOMNode> sibling;
|
|
result = node->GetPreviousSibling(getter_AddRefs(sibling));
|
|
if ((NS_SUCCEEDED(result)) && sibling)
|
|
isFirst = PR_FALSE;
|
|
else
|
|
isFirst = PR_TRUE;
|
|
result = node->GetNextSibling(getter_AddRefs(sibling));
|
|
if ((NS_SUCCEEDED(result)) && sibling)
|
|
isLast = PR_FALSE;
|
|
else
|
|
isLast = PR_TRUE;
|
|
}
|
|
|
|
// build a transaction for deleting the appropriate data
|
|
if ((nsIEditor::eRTL==aDir) && (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, 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, &result);
|
|
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);
|
|
}
|
|
}
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if ((nsIEditor::eLTR==aDir) && (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, getter_AddRefs(nextNode));
|
|
if ((NS_SUCCEEDED(result)) && nextNode)
|
|
{ // 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> nextNodeAsText;
|
|
nextNodeAsText = do_QueryInterface(nextNode,&result);
|
|
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);
|
|
}
|
|
}
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (nodeAsText)
|
|
{ // we have text, so delete a char at the proper offset
|
|
if (nsIEditor::eRTL==aDir) {
|
|
offset --;
|
|
}
|
|
DeleteTextTxn *txn;
|
|
result = CreateTxnForDeleteText(nodeAsText, offset, length, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
aTxn->AppendChild(txn);
|
|
}
|
|
}
|
|
else
|
|
{ // we're deleting a node
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetPriorNode(nsIDOMNode *aCurrentNode, nsIDOMNode **aResultNode)
|
|
{
|
|
nsresult result;
|
|
*aResultNode = nsnull;
|
|
// if aCurrentNode has a left sibling, return that sibling's rightmost child (or itself if it has no children)
|
|
result = aCurrentNode->GetPreviousSibling(aResultNode);
|
|
if ((NS_SUCCEEDED(result)) && *aResultNode)
|
|
return GetRightmostChild(*aResultNode, 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)
|
|
{
|
|
|
|
return GetRightmostChild(node, aResultNode);
|
|
}
|
|
}
|
|
} while ((NS_SUCCEEDED(result)) && parent);
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::GetNextNode(nsIDOMNode *aCurrentNode, nsIDOMNode **aResultNode)
|
|
{
|
|
nsresult result;
|
|
*aResultNode = nsnull;
|
|
// if aCurrentNode has a left sibling, return that sibling's rightmost child (or itself if it has no children)
|
|
result = aCurrentNode->GetNextSibling(aResultNode);
|
|
if ((NS_SUCCEEDED(result)) && *aResultNode)
|
|
return GetLeftmostChild(*aResultNode, 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->GetNextSibling(getter_AddRefs(node));
|
|
if ((NS_SUCCEEDED(result)) && node)
|
|
{
|
|
return GetLeftmostChild(node, 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;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::SplitNode(nsIDOMNode * aNode,
|
|
PRInt32 aOffset)
|
|
{
|
|
SplitElementTxn *txn;
|
|
nsresult result = CreateTxnForSplitNode(aNode, aOffset, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult nsEditor::CreateTxnForSplitNode(nsIDOMNode *aNode,
|
|
PRUint32 aOffset,
|
|
SplitElementTxn **aTxn)
|
|
{
|
|
nsresult result=NS_ERROR_NULL_POINTER;
|
|
if (nsnull != aNode)
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kSplitElementTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aNode, aOffset);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::JoinNodes(nsIDOMNode * aNodeToKeep,
|
|
nsIDOMNode * aNodeToJoin,
|
|
nsIDOMNode * aParent,
|
|
PRBool aNodeToKeepIsFirst)
|
|
{
|
|
JoinElementTxn *txn;
|
|
nsresult result = CreateTxnForJoinNode(aNodeToKeep, aNodeToJoin, &txn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = Do(txn);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult nsEditor::CreateTxnForJoinNode(nsIDOMNode *aLeftNode,
|
|
nsIDOMNode *aRightNode,
|
|
JoinElementTxn **aTxn)
|
|
{
|
|
nsresult result=NS_ERROR_NULL_POINTER;
|
|
if ((nsnull != aLeftNode) && (nsnull != aRightNode))
|
|
{
|
|
result = TransactionFactory::GetNewTransaction(kJoinElementTxnIID, (EditTxn **)aTxn);
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = (*aTxn)->Init(this, aLeftNode, aRightNode);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::SplitNodeImpl(nsIDOMNode * aExistingRightNode,
|
|
PRInt32 aOffset,
|
|
nsIDOMNode* aNewLeftNode,
|
|
nsIDOMNode* aParent)
|
|
{
|
|
nsresult result;
|
|
NS_ASSERTION(((nsnull!=aExistingRightNode) &&
|
|
(nsnull!=aNewLeftNode) &&
|
|
(nsnull!=aParent)),
|
|
"null arg");
|
|
if ((nsnull!=aExistingRightNode) &&
|
|
(nsnull!=aNewLeftNode) &&
|
|
(nsnull!=aParent))
|
|
{
|
|
nsCOMPtr<nsIDOMNode> resultNode;
|
|
result = aParent->InsertBefore(aNewLeftNode, aExistingRightNode, getter_AddRefs(resultNode));
|
|
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(aExistingRightNode);
|
|
nsCOMPtr<nsIDOMCharacterData> leftNodeAsText(aNewLeftNode);
|
|
if (leftNodeAsText && rightNodeAsText)
|
|
{
|
|
// fix right node
|
|
nsString leftText;
|
|
rightNodeAsText->SubstringData(0, aOffset, leftText);
|
|
rightNodeAsText->DeleteData(0, aOffset);
|
|
// fix left node
|
|
leftNodeAsText->SetData(leftText);
|
|
}
|
|
else
|
|
{ // otherwise it's an interior node, so shuffle around the children
|
|
nsCOMPtr<nsIDOMNodeList> childNodes;
|
|
result = aExistingRightNode->GetChildNodes(getter_AddRefs(childNodes));
|
|
if ((NS_SUCCEEDED(result)) && (childNodes))
|
|
{
|
|
PRInt32 i=0;
|
|
for ( ; ((NS_SUCCEEDED(result)) && (i<aOffset)); i++)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> childNode;
|
|
result = childNodes->Item(i, getter_AddRefs(childNode));
|
|
if ((NS_SUCCEEDED(result)) && (childNode))
|
|
{
|
|
result = aExistingRightNode->RemoveChild(childNode, getter_AddRefs(resultNode));
|
|
if (NS_SUCCEEDED(result))
|
|
{
|
|
result = aNewLeftNode->AppendChild(childNode, getter_AddRefs(resultNode));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
result = NS_ERROR_INVALID_ARG;
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
nsEditor::JoinNodesImpl(nsIDOMNode * aNodeToKeep,
|
|
nsIDOMNode * aNodeToJoin,
|
|
nsIDOMNode * aParent,
|
|
PRBool aNodeToKeepIsFirst)
|
|
{
|
|
nsresult result;
|
|
NS_ASSERTION(((nsnull!=aNodeToKeep) &&
|
|
(nsnull!=aNodeToJoin) &&
|
|
(nsnull!=aParent)),
|
|
"null arg");
|
|
if ((nsnull!=aNodeToKeep) &&
|
|
(nsnull!=aNodeToJoin) &&
|
|
(nsnull!=aParent))
|
|
{
|
|
// if it's a text node, just shuffle around some text
|
|
nsCOMPtr<nsIDOMCharacterData> keepNodeAsText(aNodeToKeep);
|
|
nsCOMPtr<nsIDOMCharacterData> joinNodeAsText(aNodeToJoin);
|
|
if (keepNodeAsText && joinNodeAsText)
|
|
{
|
|
nsString rightText;
|
|
nsString 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))
|
|
{
|
|
PRUint32 i;
|
|
PRUint32 childCount=0;
|
|
childNodes->GetLength(&childCount);
|
|
nsCOMPtr<nsIDOMNode> firstNode; //only used if aNodeToKeepIsFirst is false
|
|
if (PR_FALSE==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;
|
|
for (i=0; ((NS_SUCCEEDED(result)) && (i<childCount)); i++)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> childNode;
|
|
result = childNodes->Item(i, getter_AddRefs(childNode));
|
|
if ((NS_SUCCEEDED(result)) && (childNode))
|
|
{
|
|
if (PR_TRUE==aNodeToKeepIsFirst)
|
|
{ // append children of aNodeToJoin
|
|
result = aNodeToKeep->AppendChild(childNode, getter_AddRefs(resultNode));
|
|
}
|
|
else
|
|
{ // prepend children of aNodeToJoin
|
|
result = aNodeToKeep->InsertBefore(childNode, firstNode, getter_AddRefs(resultNode));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
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));
|
|
}
|
|
}
|
|
else
|
|
result = NS_ERROR_INVALID_ARG;
|
|
|
|
return result;
|
|
}
|
|
|
|
nsresult nsIEditorSupport::GetChildOffset(nsIDOMNode *aChild, nsIDOMNode *aParent, PRInt32 &aOffset)
|
|
{
|
|
NS_ASSERTION((aChild && aParent), "bad args");
|
|
nsresult result = NS_ERROR_NULL_POINTER;
|
|
if (aChild && aParent)
|
|
{
|
|
nsCOMPtr<nsIDOMNodeList> childNodes;
|
|
result = aParent->GetChildNodes(getter_AddRefs(childNodes));
|
|
if ((NS_SUCCEEDED(result)) && (childNodes))
|
|
{
|
|
PRInt32 i=0;
|
|
for ( ; NS_SUCCEEDED(result); i++)
|
|
{
|
|
nsCOMPtr<nsIDOMNode> childNode;
|
|
result = childNodes->Item(i, getter_AddRefs(childNode));
|
|
if ((NS_SUCCEEDED(result)) && (childNode))
|
|
{
|
|
if (childNode.get()==aChild)
|
|
{
|
|
aOffset = i;
|
|
break;
|
|
}
|
|
}
|
|
else if (!childNode)
|
|
result = NS_ERROR_NULL_POINTER;
|
|
}
|
|
}
|
|
else if (!childNodes)
|
|
result = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
//END nsEditor Private methods
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* ----- TEST METHODS ----- */
|
|
// Methods defined here are TEMPORARY
|
|
nsresult
|
|
GetColIndexForCell(nsIPresShell *aPresShell, nsIDOMNode *aCellNode, PRInt32 &aCellIndex)
|
|
{
|
|
aCellIndex=0; // initialize out param
|
|
nsresult result = NS_ERROR_FAILURE; // we return an error unless we get the index
|
|
if ((nsnull!=aCellNode) && (nsnull!=aPresShell))
|
|
{ // get the content interface
|
|
nsCOMPtr<nsIContent> nodeAsContent(aCellNode);
|
|
if (nodeAsContent)
|
|
{ // get the frame from the content interface
|
|
nsISupports *layoutObject=nsnull; // frames are not ref counted, so don't use an nsCOMPtr
|
|
result = aPresShell->GetLayoutObjectFor(nodeAsContent, &layoutObject);
|
|
if ((NS_SUCCEEDED(result)) && (nsnull!=layoutObject))
|
|
{ // get the table cell interface from the frame
|
|
nsITableCellLayout *cellLayoutObject=nsnull; // again, frames are not ref-counted
|
|
result = layoutObject->QueryInterface(nsITableCellLayout::IID(), (void**)(&cellLayoutObject));
|
|
if ((NS_SUCCEEDED(result)) && (nsnull!=cellLayoutObject))
|
|
{ // get the index
|
|
result = cellLayoutObject->GetColIndex(aCellIndex);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
result = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/* ----- END TEST METHODS ----- */
|
|
|
|
|
|
|
|
|
|
|