gecko-dev/editor/libeditor/base/IMETextTxn.h

129 lines
4.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
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*
* Software distributed under the License is distributed on an "AS IS" basis,
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* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
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* Portions created by the Initial Developer are Copyright (C) 1998-1999
* the Initial Developer. All Rights Reserved.
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* Contributor(s):
*
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* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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#ifndef IMETextTxn_h__
#define IMETextTxn_h__
#include "EditTxn.h"
#include "nsIDOMCharacterData.h"
#include "nsIPrivateTextRange.h"
#include "nsCOMPtr.h"
#include "nsWeakPtr.h"
#include "nsIAtom.h"
// {D4D25721-2813-11d3-9EA3-0060089FE59B}
#define IME_TEXT_TXN_CID \
{0xd4d25721, 0x2813, 0x11d3, \
{0x9e, 0xa3, 0x0, 0x60, 0x8, 0x9f, 0xe5, 0x9b }}
class nsIPresShell;
/**
* A transaction that inserts text into a content node.
*/
class IMETextTxn : public EditTxn
{
public:
static const nsIID& GetCID() { static const nsIID iid = IME_TEXT_TXN_CID; return iid; }
/** initialize the transaction
* @param aElement the text content node
* @param aOffset the location in aElement to do the insertion
* @param aReplaceLength the length of text to replace (0 == no replacement)
* @param aString the new text to insert
* @param aSelCon used to get and set the selection
*/
NS_IMETHOD Init(nsIDOMCharacterData *aElement,
PRUint32 aOffset,
PRUint32 aReplaceLength,
nsIPrivateTextRangeList* aTextRangeList,
const nsAString& aString,
nsWeakPtr aSelCon);
private:
IMETextTxn();
public:
NS_DECL_EDITTXN
NS_IMETHOD Merge(nsITransaction *aTransaction, PRBool *aDidMerge);
NS_IMETHOD MarkFixed(void);
// nsISupports declarations
// override QueryInterface to handle IMETextTxn request
NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
/** return the string data associated with this transaction */
NS_IMETHOD GetData(nsString& aResult, nsIPrivateTextRangeList** aTextRangeList);
protected:
NS_IMETHOD CollapseTextSelection(void);
/** the text element to operate upon */
nsCOMPtr<nsIDOMCharacterData> mElement;
/** the offsets into mElement where the insertion should be placed*/
PRUint32 mOffset;
PRUint32 mReplaceLength;
/** the text to insert into mElement at mOffset */
nsString mStringToInsert;
/** the range list **/
nsCOMPtr<nsIPrivateTextRangeList> mRangeList;
/** the selection controller, which we'll need to get the selection */
nsWeakPtr mSelConWeak; // use a weak reference
PRBool mFixed;
friend class TransactionFactory;
friend class nsDerivedSafe<IMETextTxn>; // work around for a compiler bug
};
#endif