gecko/editor/libeditor/html/nsEditorTxnLog.cpp

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/* -*- 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
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* 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
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*
* Alternatively, the contents of this file may be used under the terms of
* 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"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <stdio.h>
#include "nsHTMLEditorLog.h"
#include "nsEditorTxnLog.h"
#include "nsPIEditorTransaction.h"
#define LOCK_LOG(doc)
#define UNLOCK_LOG(doc)
nsEditorTxnLog::nsEditorTxnLog(nsHTMLEditorLog *aEditorLog)
{
mRefCnt = 0;
mIndentLevel = 0;
mBatchCount = 0;
mEditorLog = aEditorLog;
}
nsEditorTxnLog::~nsEditorTxnLog()
{
}
// #define DEBUG_EDITOR_TXN_LOG_REFCNT 1
#ifdef DEBUG_EDITOR_TXN_LOG_REFCNT
nsrefcnt nsEditorTxnLog::AddRef(void)
{
return ++mRefCnt;
}
nsrefcnt nsEditorTxnLog::Release(void)
{
NS_PRECONDITION(0 != mRefCnt, "dup release");
if (--mRefCnt == 0) {
NS_DELETEXPCOM(this);
return 0;
}
return mRefCnt;
}
#else
NS_IMPL_ADDREF(nsEditorTxnLog)
NS_IMPL_RELEASE(nsEditorTxnLog)
#endif
NS_IMPL_QUERY_INTERFACE1(nsEditorTxnLog, nsITransactionListener)
NS_IMETHODIMP
nsEditorTxnLog::WillDo(nsITransactionManager *aTxMgr, nsITransaction *aTransaction, PRBool *aInterrupt)
{
LOCK_LOG(this);
PrintIndent(mIndentLevel++);
Write("WillDo: ");
WriteTransaction(aTransaction);
Write("\n");
Flush();
UNLOCK_LOG(this);
return NS_OK;
}
NS_IMETHODIMP
nsEditorTxnLog::DidDo(nsITransactionManager *aTxMgr, nsITransaction *aTransaction, nsresult aDoResult)
{
LOCK_LOG(this);
PrintIndent(--mIndentLevel);
Write("DidDo: ");
WriteTransaction(aTransaction);
Write("(");
WriteInt(aDoResult);
Write(")\n");
Flush();
UNLOCK_LOG(this);
return NS_OK;
}
NS_IMETHODIMP
nsEditorTxnLog::WillUndo(nsITransactionManager *aTxMgr, nsITransaction *aTransaction, PRBool *aInterrupt)
{
LOCK_LOG(this);
PrintIndent(mIndentLevel++);
if (aTransaction)
{
Write("WillUndo: ");
WriteTransaction(aTransaction);
Write("\n");
}
else
Write("WillUndoBatch\n");
Flush();
UNLOCK_LOG(this);
return NS_OK;
}
NS_IMETHODIMP
nsEditorTxnLog::DidUndo(nsITransactionManager *aTxMgr, nsITransaction *aTransaction, nsresult aUndoResult)
{
LOCK_LOG(this);
PrintIndent(--mIndentLevel);
if (aTransaction)
{
Write("DidUndo: ");
WriteTransaction(aTransaction);
Write("(");
WriteInt(aUndoResult);
Write(")\n");
}
else
{
Write("EndUndoBatch (");
WriteInt(aUndoResult);
Write(")\n");
}
Flush();
UNLOCK_LOG(this);
return NS_OK;
}
NS_IMETHODIMP
nsEditorTxnLog::WillRedo(nsITransactionManager *aTxMgr, nsITransaction *aTransaction, PRBool *aInterrupt)
{
LOCK_LOG(this);
PrintIndent(mIndentLevel++);
if (aTransaction)
{
Write("WillRedo: ");
WriteTransaction(aTransaction);
Write("\n");
}
else
Write("WillRedoBatch\n");
Flush();
UNLOCK_LOG(this);
return NS_OK;
}
NS_IMETHODIMP
nsEditorTxnLog::DidRedo(nsITransactionManager *aTxMgr, nsITransaction *aTransaction, nsresult aRedoResult)
{
LOCK_LOG(this);
PrintIndent(--mIndentLevel);
if (aTransaction)
{
Write("DidRedo: ");
WriteTransaction(aTransaction);
Write(" (");
WriteInt(aRedoResult);
Write(")\n");
}
else
{
Write("DidRedoBatch (");
WriteInt(aRedoResult);
Write(")\n");
}
Flush();
UNLOCK_LOG(this);
return NS_OK;
}
NS_IMETHODIMP
nsEditorTxnLog::WillBeginBatch(nsITransactionManager *aTxMgr, PRBool *aInterrupt)
{
LOCK_LOG(this);
PrintIndent(mIndentLevel);
Write("WillBeginBatch: ");
WriteInt(mBatchCount);
Write("\n");
Flush();
UNLOCK_LOG(this);
return NS_OK;
}
NS_IMETHODIMP
nsEditorTxnLog::DidBeginBatch(nsITransactionManager *aTxMgr, nsresult aResult)
{
LOCK_LOG(this);
PrintIndent(mIndentLevel++);
Write("DidBeginBatch: ");
WriteInt(mBatchCount++);
Write(" (");
WriteInt(aResult);
Write(")\n");
Flush();
UNLOCK_LOG(this);
return NS_OK;
}
NS_IMETHODIMP
nsEditorTxnLog::WillEndBatch(nsITransactionManager *aTxMgr, PRBool *aInterrupt)
{
LOCK_LOG(this);
PrintIndent(--mIndentLevel);
Write("WillEndBatch: ");
WriteInt(--mBatchCount);
Write("\n");
Flush();
UNLOCK_LOG(this);
return NS_OK;
}
NS_IMETHODIMP
nsEditorTxnLog::DidEndBatch(nsITransactionManager *aTxMgr, nsresult aResult)
{
LOCK_LOG(this);
PrintIndent(mIndentLevel);
Write("DidEndBatch: ");
WriteInt(mBatchCount);
Write(" (");
WriteInt(aResult);
Write(")\n");
Flush();
UNLOCK_LOG(this);
return NS_OK;
}
NS_IMETHODIMP
nsEditorTxnLog::WillMerge(nsITransactionManager *aTxMgr, nsITransaction *aTopTransaction, nsITransaction *aTransaction, PRBool *aInterrupt)
{
LOCK_LOG(this);
PrintIndent(mIndentLevel);
Write("WillMerge: ");
WriteTransaction(aTopTransaction);
Write(" <-- ");
WriteTransaction(aTransaction);
Write("\n");
Flush();
UNLOCK_LOG(this);
return NS_OK;
}
NS_IMETHODIMP
nsEditorTxnLog::DidMerge(nsITransactionManager *aTxMgr, nsITransaction *aTopTransaction, nsITransaction *aTransaction, PRBool aDidMerge, nsresult aMergeResult)
{
LOCK_LOG(this);
PrintIndent(mIndentLevel);
Write("DidMerge: ");
WriteTransaction(aTopTransaction);
Write(" <-- ");
WriteTransaction(aTransaction);
Write(" (");
Write(aDidMerge ? "TRUE" : "FALSE");
Write(", ");
WriteInt(aMergeResult);
Write(")\n");
Flush();
UNLOCK_LOG(this);
return NS_OK;
}
nsresult
nsEditorTxnLog::WriteTransaction(nsITransaction *aTransaction)
{
nsString str;
nsCOMPtr<nsPIEditorTransaction> txn = do_QueryInterface(aTransaction);
if (txn) {
txn->GetTxnDescription(str);
if (str.IsEmpty())
str.AssignLiteral("<NULL>");
}
return Write(NS_LossyConvertUTF16toASCII(str).get());
}
nsresult
nsEditorTxnLog::PrintIndent(PRInt32 aIndentLevel)
{
PRInt32 i;
Write(" // ");
for (i = 0; i < aIndentLevel; i++)
Write(" ");
return NS_OK;
}
nsresult
nsEditorTxnLog::Write(const char *aBuffer)
{
if (!aBuffer)
return NS_ERROR_NULL_POINTER;
if (mEditorLog)
mEditorLog->Write(aBuffer);
else
{
PRInt32 len = strlen(aBuffer);
if (len > 0)
fwrite(aBuffer, 1, len, stdout);
}
return NS_OK;
}
nsresult
nsEditorTxnLog::WriteInt(PRInt32 aInt)
{
if (mEditorLog)
mEditorLog->WriteInt(aInt);
else
printf("%d", aInt);
return NS_OK;
}
nsresult
nsEditorTxnLog::Flush()
{
nsresult result = NS_OK;
#ifdef SLOWS_THINGS_WAY_DOWN
if (mEditorLog)
result = mEditorLog->Flush();
else
fflush(stdout);
#endif // SLOWS_THINGS_WAY_DOWN
return result;
}