mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-13 18:27:35 +00:00
228 lines
6.3 KiB
C++
228 lines
6.3 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
|
|
* 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 the Mozilla browser.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications, Inc.
|
|
* Portions created by the Initial Developer are Copyright (C) 1999
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* 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 "nsDocShellEnumerator.h"
|
|
|
|
#include "nsIDocShellTreeNode.h"
|
|
|
|
nsDocShellEnumerator::nsDocShellEnumerator(PRInt32 inEnumerationDirection)
|
|
: mRootItem(nsnull)
|
|
, mItemArray(nsnull)
|
|
, mCurIndex(0)
|
|
, mDocShellType(nsIDocShellTreeItem::typeAll)
|
|
, mEnumerationDirection(inEnumerationDirection)
|
|
{
|
|
}
|
|
|
|
nsDocShellEnumerator::~nsDocShellEnumerator()
|
|
{
|
|
delete mItemArray;
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS1(nsDocShellEnumerator, nsISimpleEnumerator)
|
|
|
|
|
|
/* nsISupports getNext (); */
|
|
NS_IMETHODIMP nsDocShellEnumerator::GetNext(nsISupports **outCurItem)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(outCurItem);
|
|
*outCurItem = nsnull;
|
|
|
|
nsresult rv = EnsureDocShellArray();
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
if (mCurIndex >= 0 && mCurIndex < mItemArray->Count())
|
|
{
|
|
nsIDocShellTreeItem* thisItem = NS_REINTERPRET_CAST(nsIDocShellTreeItem*, mItemArray->ElementAt(mCurIndex));
|
|
rv = thisItem->QueryInterface(NS_GET_IID(nsISupports), (void **)outCurItem);
|
|
if (NS_FAILED(rv)) return rv;
|
|
}
|
|
else
|
|
return NS_ERROR_FAILURE;
|
|
|
|
mCurIndex ++;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/* boolean hasMoreElements (); */
|
|
NS_IMETHODIMP nsDocShellEnumerator::HasMoreElements(PRBool *outHasMore)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(outHasMore);
|
|
*outHasMore = PR_FALSE;
|
|
|
|
nsresult rv = EnsureDocShellArray();
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
*outHasMore = (mCurIndex < mItemArray->Count());
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsDocShellEnumerator::GetEnumerationRootItem(nsIDocShellTreeItem * *aEnumerationRootItem)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aEnumerationRootItem);
|
|
*aEnumerationRootItem = mRootItem;
|
|
NS_IF_ADDREF(*aEnumerationRootItem);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsDocShellEnumerator::SetEnumerationRootItem(nsIDocShellTreeItem * aEnumerationRootItem)
|
|
{
|
|
mRootItem = aEnumerationRootItem;
|
|
ClearState();
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsDocShellEnumerator::GetEnumDocShellType(PRInt32 *aEnumerationItemType)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aEnumerationItemType);
|
|
*aEnumerationItemType = mDocShellType;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsDocShellEnumerator::SetEnumDocShellType(PRInt32 aEnumerationItemType)
|
|
{
|
|
mDocShellType = aEnumerationItemType;
|
|
ClearState();
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsDocShellEnumerator::First()
|
|
{
|
|
mCurIndex = 0;
|
|
return EnsureDocShellArray();
|
|
}
|
|
|
|
nsresult nsDocShellEnumerator::EnsureDocShellArray()
|
|
{
|
|
if (!mItemArray)
|
|
{
|
|
mItemArray = new nsVoidArray;
|
|
if (!mItemArray) return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
return BuildDocShellArray(*mItemArray);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsDocShellEnumerator::ClearState()
|
|
{
|
|
delete mItemArray;
|
|
mItemArray = nsnull;
|
|
|
|
mCurIndex = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsDocShellEnumerator::BuildDocShellArray(nsVoidArray& inItemArray)
|
|
{
|
|
NS_ENSURE_TRUE(mRootItem, NS_ERROR_NOT_INITIALIZED);
|
|
inItemArray.Clear();
|
|
return BuildArrayRecursive(mRootItem, inItemArray);
|
|
}
|
|
|
|
nsresult nsDocShellForwardsEnumerator::BuildArrayRecursive(nsIDocShellTreeItem* inItem, nsVoidArray& inItemArray)
|
|
{
|
|
nsresult rv;
|
|
nsCOMPtr<nsIDocShellTreeNode> itemAsNode = do_QueryInterface(inItem, &rv);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
PRInt32 itemType;
|
|
// add this item to the array
|
|
if ((mDocShellType == nsIDocShellTreeItem::typeAll) ||
|
|
(NS_SUCCEEDED(inItem->GetItemType(&itemType)) && (itemType == mDocShellType)))
|
|
{
|
|
rv = inItemArray.AppendElement((void *)inItem);
|
|
if (NS_FAILED(rv)) return rv;
|
|
}
|
|
|
|
PRInt32 numChildren;
|
|
rv = itemAsNode->GetChildCount(&numChildren);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
for (PRInt32 i = 0; i < numChildren; ++i)
|
|
{
|
|
nsCOMPtr<nsIDocShellTreeItem> curChild;
|
|
rv = itemAsNode->GetChildAt(i, getter_AddRefs(curChild));
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
rv = BuildArrayRecursive(curChild, inItemArray);
|
|
if (NS_FAILED(rv)) return rv;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsresult nsDocShellBackwardsEnumerator::BuildArrayRecursive(nsIDocShellTreeItem* inItem, nsVoidArray& inItemArray)
|
|
{
|
|
nsresult rv;
|
|
nsCOMPtr<nsIDocShellTreeNode> itemAsNode = do_QueryInterface(inItem, &rv);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
PRInt32 numChildren;
|
|
rv = itemAsNode->GetChildCount(&numChildren);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
for (PRInt32 i = numChildren - 1; i >= 0; --i)
|
|
{
|
|
nsCOMPtr<nsIDocShellTreeItem> curChild;
|
|
rv = itemAsNode->GetChildAt(i, getter_AddRefs(curChild));
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
rv = BuildArrayRecursive(curChild, inItemArray);
|
|
if (NS_FAILED(rv)) return rv;
|
|
}
|
|
|
|
PRInt32 itemType;
|
|
// add this item to the array
|
|
if ((mDocShellType == nsIDocShellTreeItem::typeAll) ||
|
|
(NS_SUCCEEDED(inItem->GetItemType(&itemType)) && (itemType == mDocShellType)))
|
|
{
|
|
rv = inItemArray.AppendElement((void *)inItem);
|
|
if (NS_FAILED(rv)) return rv;
|
|
}
|
|
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|