mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-26 06:11:37 +00:00
140 lines
4.2 KiB
C++
140 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/* ***** 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 a COM aware array class.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corp.
|
|
* Portions created by the Initial Developer are Copyright (C) 2002
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Alec Flett <alecf@netscape.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either 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 "nsCOMArray.h"
|
|
|
|
PR_STATIC_CALLBACK(PRBool) ReleaseObjects(void* aElement, void*);
|
|
|
|
// implementations of non-trivial methods in nsCOMArray_base
|
|
|
|
// copy constructor - we can't just memcpy here, because
|
|
// we have to make sure we own our own array buffer, and that each
|
|
// object gets another AddRef()
|
|
nsCOMArray_base::nsCOMArray_base(const nsCOMArray_base& aOther)
|
|
{
|
|
// make sure we do only one allocation
|
|
mArray.SizeTo(aOther.Count());
|
|
AppendObjects(aOther);
|
|
}
|
|
|
|
nsCOMArray_base::~nsCOMArray_base()
|
|
{
|
|
PRInt32 count = Count(), i;
|
|
for (i = 0; i < count; ++i) {
|
|
nsISupports* obj = ObjectAt(i);
|
|
NS_IF_RELEASE(obj);
|
|
}
|
|
}
|
|
|
|
PRBool
|
|
nsCOMArray_base::InsertObjectAt(nsISupports* aObject, PRInt32 aIndex) {
|
|
PRBool result = mArray.InsertElementAt(aObject, aIndex);
|
|
if (result)
|
|
NS_IF_ADDREF(aObject);
|
|
return result;
|
|
}
|
|
|
|
PRBool
|
|
nsCOMArray_base::InsertObjectsAt(const nsCOMArray_base& aObjects, PRInt32 aIndex) {
|
|
PRBool result = mArray.InsertElementsAt(aObjects.mArray, aIndex);
|
|
if (result) {
|
|
// need to addref all these
|
|
PRInt32 count = aObjects.Count();
|
|
for (PRInt32 i = 0; i < count; ++i) {
|
|
NS_IF_ADDREF(aObjects.ObjectAt(i));
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
PRBool
|
|
nsCOMArray_base::ReplaceObjectAt(nsISupports* aObject, PRInt32 aIndex)
|
|
{
|
|
// its ok if oldObject is null here
|
|
nsISupports *oldObject = ObjectAt(aIndex);
|
|
|
|
PRBool result = mArray.ReplaceElementAt(aObject, aIndex);
|
|
|
|
// ReplaceElementAt could fail, such as if the array grows
|
|
// so only release the existing object if the replacement succeeded
|
|
if (result) {
|
|
NS_IF_RELEASE(oldObject);
|
|
NS_IF_ADDREF(aObject);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
PRBool
|
|
nsCOMArray_base::RemoveObject(nsISupports *aObject)
|
|
{
|
|
PRBool result = mArray.RemoveElement(aObject);
|
|
if (result)
|
|
NS_IF_RELEASE(aObject);
|
|
return result;
|
|
}
|
|
|
|
PRBool
|
|
nsCOMArray_base::RemoveObjectAt(PRInt32 aIndex)
|
|
{
|
|
nsISupports* element = ObjectAt(aIndex);
|
|
if (element) {
|
|
PRBool result = mArray.RemoveElementAt(aIndex);
|
|
if (result)
|
|
NS_IF_RELEASE(element);
|
|
return result;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
// useful for destructors
|
|
PRBool
|
|
ReleaseObjects(void* aElement, void*)
|
|
{
|
|
nsISupports* element = NS_STATIC_CAST(nsISupports*, aElement);
|
|
NS_IF_RELEASE(element);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
void
|
|
nsCOMArray_base::Clear()
|
|
{
|
|
mArray.EnumerateForwards(ReleaseObjects, nsnull);
|
|
mArray.Clear();
|
|
}
|
|
|