LCOV - code coverage report
Current view: directory - docshell/base - nsDocShellEnumerator.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 90 0 0.0 %
Date: 2012-06-02 Functions: 18 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2                 :  *
       3                 :  * ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is the Mozilla browser.
      17                 :  *
      18                 :  * The Initial Developer of the Original Code is
      19                 :  * Netscape Communications, Inc.
      20                 :  * Portions created by the Initial Developer are Copyright (C) 1999
      21                 :  * the Initial Developer. All Rights Reserved.
      22                 :  *
      23                 :  * Contributor(s):
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      27                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : 
      40                 : #include "nsDocShellEnumerator.h"
      41                 : 
      42                 : #include "nsIDocShellTreeItem.h"
      43                 : #include "nsIDocShellTreeNode.h"
      44                 : 
      45               0 : nsDocShellEnumerator::nsDocShellEnumerator(PRInt32 inEnumerationDirection)
      46                 : : mRootItem(nsnull)
      47                 : , mCurIndex(0)
      48                 : , mDocShellType(nsIDocShellTreeItem::typeAll)
      49                 : , mArrayValid(false)
      50               0 : , mEnumerationDirection(inEnumerationDirection)
      51                 : {
      52               0 : }
      53                 : 
      54               0 : nsDocShellEnumerator::~nsDocShellEnumerator()
      55                 : {
      56               0 : }
      57                 : 
      58               0 : NS_IMPL_ISUPPORTS1(nsDocShellEnumerator, nsISimpleEnumerator)
      59                 : 
      60                 : 
      61                 : /* nsISupports getNext (); */
      62               0 : NS_IMETHODIMP nsDocShellEnumerator::GetNext(nsISupports **outCurItem)
      63                 : {
      64               0 :   NS_ENSURE_ARG_POINTER(outCurItem);
      65               0 :   *outCurItem = nsnull;
      66                 :   
      67               0 :   nsresult rv = EnsureDocShellArray();
      68               0 :   if (NS_FAILED(rv)) return rv;
      69                 :   
      70               0 :   if (mCurIndex >= mItemArray.Length()) {
      71               0 :     return NS_ERROR_FAILURE;
      72                 :   }
      73                 : 
      74                 :   // post-increment is important here
      75               0 :   nsCOMPtr<nsISupports> item = do_QueryReferent(mItemArray[mCurIndex++], &rv);
      76               0 :   item.forget(outCurItem);
      77               0 :   return rv;
      78                 : }
      79                 : 
      80                 : /* boolean hasMoreElements (); */
      81               0 : NS_IMETHODIMP nsDocShellEnumerator::HasMoreElements(bool *outHasMore)
      82                 : {
      83               0 :   NS_ENSURE_ARG_POINTER(outHasMore);
      84               0 :   *outHasMore = false;
      85                 : 
      86               0 :   nsresult rv = EnsureDocShellArray();
      87               0 :   if (NS_FAILED(rv)) return rv;
      88                 : 
      89               0 :   *outHasMore = (mCurIndex < mItemArray.Length());
      90               0 :   return NS_OK;
      91                 : }
      92                 : 
      93               0 : nsresult nsDocShellEnumerator::GetEnumerationRootItem(nsIDocShellTreeItem * *aEnumerationRootItem)
      94                 : {
      95               0 :   NS_ENSURE_ARG_POINTER(aEnumerationRootItem);
      96               0 :   nsCOMPtr<nsIDocShellTreeItem> item = do_QueryReferent(mRootItem);
      97               0 :   item.forget(aEnumerationRootItem);
      98               0 :   return NS_OK;
      99                 : }
     100                 : 
     101               0 : nsresult nsDocShellEnumerator::SetEnumerationRootItem(nsIDocShellTreeItem * aEnumerationRootItem)
     102                 : {
     103               0 :   mRootItem = do_GetWeakReference(aEnumerationRootItem);
     104               0 :   ClearState();
     105               0 :   return NS_OK;
     106                 : }
     107                 : 
     108               0 : nsresult nsDocShellEnumerator::GetEnumDocShellType(PRInt32 *aEnumerationItemType)
     109                 : {
     110               0 :   NS_ENSURE_ARG_POINTER(aEnumerationItemType);
     111               0 :   *aEnumerationItemType = mDocShellType;
     112               0 :   return NS_OK;
     113                 : }
     114                 : 
     115               0 : nsresult nsDocShellEnumerator::SetEnumDocShellType(PRInt32 aEnumerationItemType)
     116                 : {
     117               0 :   mDocShellType = aEnumerationItemType;
     118               0 :   ClearState();
     119               0 :   return NS_OK;
     120                 : }
     121                 : 
     122               0 : nsresult nsDocShellEnumerator::First()
     123                 : {
     124               0 :   mCurIndex = 0;
     125               0 :   return EnsureDocShellArray();
     126                 : }
     127                 : 
     128               0 : nsresult nsDocShellEnumerator::EnsureDocShellArray()
     129                 : {
     130               0 :   if (!mArrayValid)
     131                 :   {
     132               0 :     mArrayValid = true;
     133               0 :     return BuildDocShellArray(mItemArray);
     134                 :   }
     135                 :   
     136               0 :   return NS_OK;
     137                 : }
     138                 : 
     139               0 : nsresult nsDocShellEnumerator::ClearState()
     140                 : {
     141               0 :   mItemArray.Clear();
     142               0 :   mArrayValid = false;
     143               0 :   mCurIndex = 0;
     144               0 :   return NS_OK;
     145                 : }
     146                 : 
     147               0 : nsresult nsDocShellEnumerator::BuildDocShellArray(nsTArray<nsWeakPtr>& inItemArray)
     148                 : {
     149               0 :   NS_ENSURE_TRUE(mRootItem, NS_ERROR_NOT_INITIALIZED);
     150               0 :   inItemArray.Clear();
     151               0 :   nsCOMPtr<nsIDocShellTreeItem> item = do_QueryReferent(mRootItem);
     152               0 :   return BuildArrayRecursive(item, inItemArray);
     153                 : }
     154                 : 
     155               0 : nsresult nsDocShellForwardsEnumerator::BuildArrayRecursive(nsIDocShellTreeItem* inItem, nsTArray<nsWeakPtr>& inItemArray)
     156                 : {
     157                 :   nsresult rv;
     158               0 :   nsCOMPtr<nsIDocShellTreeNode> itemAsNode = do_QueryInterface(inItem, &rv);
     159               0 :   if (NS_FAILED(rv)) return rv;
     160                 : 
     161                 :   PRInt32   itemType;
     162                 :   // add this item to the array
     163               0 :   if ((mDocShellType == nsIDocShellTreeItem::typeAll) ||
     164               0 :       (NS_SUCCEEDED(inItem->GetItemType(&itemType)) && (itemType == mDocShellType)))
     165                 :   {
     166               0 :     if (!inItemArray.AppendElement(do_GetWeakReference(inItem)))
     167               0 :       return NS_ERROR_OUT_OF_MEMORY;
     168                 :   }
     169                 : 
     170                 :   PRInt32   numChildren;
     171               0 :   rv = itemAsNode->GetChildCount(&numChildren);
     172               0 :   if (NS_FAILED(rv)) return rv;
     173                 :   
     174               0 :   for (PRInt32 i = 0; i < numChildren; ++i)
     175                 :   {
     176               0 :     nsCOMPtr<nsIDocShellTreeItem> curChild;
     177               0 :     rv = itemAsNode->GetChildAt(i, getter_AddRefs(curChild));
     178               0 :     if (NS_FAILED(rv)) return rv;
     179                 :       
     180               0 :     rv = BuildArrayRecursive(curChild, inItemArray);
     181               0 :     if (NS_FAILED(rv)) return rv;
     182                 :   }
     183                 : 
     184               0 :   return NS_OK;
     185                 : }
     186                 : 
     187                 : 
     188               0 : nsresult nsDocShellBackwardsEnumerator::BuildArrayRecursive(nsIDocShellTreeItem* inItem, nsTArray<nsWeakPtr>& inItemArray)
     189                 : {
     190                 :   nsresult rv;
     191               0 :   nsCOMPtr<nsIDocShellTreeNode> itemAsNode = do_QueryInterface(inItem, &rv);
     192               0 :   if (NS_FAILED(rv)) return rv;
     193                 : 
     194                 :   PRInt32   numChildren;
     195               0 :   rv = itemAsNode->GetChildCount(&numChildren);
     196               0 :   if (NS_FAILED(rv)) return rv;
     197                 :   
     198               0 :   for (PRInt32 i = numChildren - 1; i >= 0; --i)
     199                 :   {
     200               0 :     nsCOMPtr<nsIDocShellTreeItem> curChild;
     201               0 :     rv = itemAsNode->GetChildAt(i, getter_AddRefs(curChild));
     202               0 :     if (NS_FAILED(rv)) return rv;
     203                 :       
     204               0 :     rv = BuildArrayRecursive(curChild, inItemArray);
     205               0 :     if (NS_FAILED(rv)) return rv;
     206                 :   }
     207                 : 
     208                 :   PRInt32   itemType;
     209                 :   // add this item to the array
     210               0 :   if ((mDocShellType == nsIDocShellTreeItem::typeAll) ||
     211               0 :       (NS_SUCCEEDED(inItem->GetItemType(&itemType)) && (itemType == mDocShellType)))
     212                 :   {
     213               0 :     if (!inItemArray.AppendElement(do_GetWeakReference(inItem)))
     214               0 :       return NS_ERROR_OUT_OF_MEMORY;
     215                 :   }
     216                 : 
     217                 : 
     218               0 :   return NS_OK;
     219                 : }
     220                 : 
     221                 : 

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