mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-30 00:01:50 +00:00
123 lines
3.6 KiB
C++
123 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape 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/NPL/
|
|
*
|
|
* 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 Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*/
|
|
|
|
#include "ChangeAttributeTxn.h"
|
|
#include "nsIDOMElement.h"
|
|
#include "nsEditor.h"
|
|
|
|
ChangeAttributeTxn::ChangeAttributeTxn()
|
|
: EditTxn()
|
|
{
|
|
}
|
|
|
|
ChangeAttributeTxn::~ChangeAttributeTxn()
|
|
{
|
|
}
|
|
|
|
NS_IMETHODIMP ChangeAttributeTxn::Init(nsIEditor *aEditor,
|
|
nsIDOMElement *aElement,
|
|
const nsAReadableString& aAttribute,
|
|
const nsAReadableString& aValue,
|
|
PRBool aRemoveAttribute)
|
|
{
|
|
NS_ASSERTION(aEditor && aElement, "bad arg");
|
|
if (!aEditor || !aElement) { return NS_ERROR_NULL_POINTER; }
|
|
|
|
mEditor = aEditor;
|
|
mElement = do_QueryInterface(aElement);
|
|
mAttribute = aAttribute;
|
|
mValue = aValue;
|
|
mRemoveAttribute = aRemoveAttribute;
|
|
mAttributeWasSet=PR_FALSE;
|
|
mUndoValue.SetLength(0);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP ChangeAttributeTxn::DoTransaction(void)
|
|
{
|
|
NS_ASSERTION(mEditor && mElement, "bad state");
|
|
if (!mEditor || !mElement) { return NS_ERROR_NOT_INITIALIZED; }
|
|
|
|
// need to get the current value of the attribute and save it, and set mAttributeWasSet
|
|
nsresult result = mEditor->GetAttributeValue(mElement, mAttribute, mUndoValue, &mAttributeWasSet);
|
|
// XXX: hack until attribute-was-set code is implemented
|
|
if (PR_FALSE==mUndoValue.IsEmpty())
|
|
mAttributeWasSet=PR_TRUE;
|
|
// XXX: end hack
|
|
|
|
// now set the attribute to the new value
|
|
if (PR_FALSE==mRemoveAttribute)
|
|
result = mElement->SetAttribute(mAttribute, mValue);
|
|
else
|
|
result = mElement->RemoveAttribute(mAttribute);
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP ChangeAttributeTxn::UndoTransaction(void)
|
|
{
|
|
NS_ASSERTION(mEditor && mElement, "bad state");
|
|
if (!mEditor || !mElement) { return NS_ERROR_NOT_INITIALIZED; }
|
|
|
|
nsresult result=NS_OK;
|
|
if (PR_TRUE==mAttributeWasSet)
|
|
result = mElement->SetAttribute(mAttribute, mUndoValue);
|
|
else
|
|
result = mElement->RemoveAttribute(mAttribute);
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP ChangeAttributeTxn::RedoTransaction(void)
|
|
{
|
|
NS_ASSERTION(mEditor && mElement, "bad state");
|
|
if (!mEditor || !mElement) { return NS_ERROR_NOT_INITIALIZED; }
|
|
|
|
nsresult result;
|
|
|
|
if (PR_FALSE==mRemoveAttribute)
|
|
result = mElement->SetAttribute(mAttribute, mValue);
|
|
else
|
|
result = mElement->RemoveAttribute(mAttribute);
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP ChangeAttributeTxn::Merge(nsITransaction *aTransaction, PRBool *aDidMerge)
|
|
{
|
|
if (nsnull!=aDidMerge)
|
|
*aDidMerge=PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP ChangeAttributeTxn::GetTxnDescription(nsAWritableString& aString)
|
|
{
|
|
aString.Assign(NS_LITERAL_STRING("ChangeAttributeTxn: "));
|
|
|
|
if (PR_FALSE==mRemoveAttribute)
|
|
aString += NS_LITERAL_STRING("[mRemoveAttribute == false] ");
|
|
else
|
|
aString += NS_LITERAL_STRING("[mRemoveAttribute == true] ");
|
|
aString += mAttribute;
|
|
return NS_OK;
|
|
}
|