mirror of
https://github.com/rn10950/RetroZilla.git
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147 lines
4.5 KiB
C++
147 lines
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998-1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef IMETextTxn_h__
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#define IMETextTxn_h__
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#include "EditTxn.h"
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#include "nsIDOMCharacterData.h"
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#include "nsIPrivateTextRange.h"
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#include "nsCOMPtr.h"
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#include "nsWeakPtr.h"
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#include "nsIAtom.h"
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// {D4D25721-2813-11d3-9EA3-0060089FE59B}
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#define IME_TEXT_TXN_CID \
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{0xd4d25721, 0x2813, 0x11d3, \
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{0x9e, 0xa3, 0x0, 0x60, 0x8, 0x9f, 0xe5, 0x9b }}
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class nsIPresShell;
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/**
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* A transaction that inserts text into a content node.
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*/
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class IMETextTxn : public EditTxn
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{
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public:
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static const nsIID& GetCID() { static const nsIID iid = IME_TEXT_TXN_CID; return iid; }
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virtual ~IMETextTxn();
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/** used to name aggregate transactions that consist only of a single IMETextTxn,
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* or a DeleteSelection followed by an IMETextTxn.
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*/
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static nsIAtom *gIMETextTxnName;
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/** initialize the transaction
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* @param aElement the text content node
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* @param aOffset the location in aElement to do the insertion
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* @param aReplaceLength the length of text to replace (0 == no replacement)
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* @param aString the new text to insert
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* @param aSelCon used to get and set the selection
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*/
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NS_IMETHOD Init(nsIDOMCharacterData *aElement,
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PRUint32 aOffset,
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PRUint32 aReplaceLength,
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nsIPrivateTextRangeList* aTextRangeList,
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const nsAString& aString,
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nsWeakPtr aSelCon);
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private:
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IMETextTxn();
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public:
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NS_IMETHOD DoTransaction(void);
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NS_IMETHOD UndoTransaction(void);
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NS_IMETHOD Merge(nsITransaction *aTransaction, PRBool *aDidMerge);
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NS_IMETHOD GetTxnDescription(nsAString& aTxnDescription);
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NS_IMETHOD MarkFixed(void);
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// nsISupports declarations
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// override QueryInterface to handle IMETextTxn request
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NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
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/** return the string data associated with this transaction */
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NS_IMETHOD GetData(nsString& aResult, nsIPrivateTextRangeList** aTextRangeList);
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/** must be called before any IMETextTxn is instantiated */
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static nsresult ClassInit();
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/** must be called once we are guaranteed all IMETextTxn have completed */
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static nsresult ClassShutdown();
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protected:
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NS_IMETHOD CollapseTextSelection(void);
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/** the text element to operate upon */
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nsCOMPtr<nsIDOMCharacterData> mElement;
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/** the offsets into mElement where the insertion should be placed*/
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PRUint32 mOffset;
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PRUint32 mReplaceLength;
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/** the text to insert into mElement at mOffset */
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nsString mStringToInsert;
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/** the range list **/
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nsCOMPtr<nsIPrivateTextRangeList> mRangeList;
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/** the selection controller, which we'll need to get the selection */
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nsWeakPtr mSelConWeak; // use a weak reference
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PRBool mFixed;
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friend class TransactionFactory;
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friend class nsDerivedSafe<IMETextTxn>; // work around for a compiler bug
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};
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#endif
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