Back to index

lightning-sunbird  0.9+nobinonly
nsTreeRowTestNode.cpp
Go to the documentation of this file.
00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is Mozilla Communicator client code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Chris Waterson <waterson@netscape.com>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #include "nsTreeRowTestNode.h"
00040 #include "nsTreeRows.h"
00041 #include "nsIRDFResource.h"
00042 #include "nsXULContentUtils.h"
00043 #include "nsConflictSet.h"
00044 
00045 #include "prlog.h"
00046 #ifdef PR_LOGGING
00047 extern PRLogModuleInfo* gXULTemplateLog;
00048 #endif
00049 
00050 nsTreeRowTestNode::nsTreeRowTestNode(InnerNode* aParent,
00051                                              nsConflictSet& aConflictSet,
00052                                              nsTreeRows& aRows,
00053                                              PRInt32 aIdVariable)
00054     : TestNode(aParent),
00055       mConflictSet(aConflictSet),
00056       mRows(aRows),
00057       mIdVariable(aIdVariable)
00058 {
00059     PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
00060            ("nsTreeRowTestNode[%p]: parent=%p id-var=%d",
00061             this, aParent, aIdVariable));
00062 }
00063 
00064 nsresult
00065 nsTreeRowTestNode::FilterInstantiations(InstantiationSet& aInstantiations, void* aClosure) const
00066 {
00067     InstantiationSet::Iterator last = aInstantiations.Last();
00068     for (InstantiationSet::Iterator inst = aInstantiations.First(); inst != last; ++inst) {
00069         Value idValue;
00070         PRBool hasIdBinding =
00071             inst->mAssignments.GetAssignmentFor(mIdVariable, &idValue);
00072 
00073 #ifdef PR_LOGGING
00074         if (PR_LOG_TEST(gXULTemplateLog, PR_LOG_DEBUG)) {
00075             const char* id = "(unbound)";
00076             if (hasIdBinding)
00077                 VALUE_TO_IRDFRESOURCE(idValue)->GetValueConst(&id);
00078 
00079             PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
00080                    ("nsTreeRowTestNode[%p]: FilterInstantiations() id=[%s]",
00081                     this, id));
00082         }
00083 #endif
00084 
00085         if (hasIdBinding) {
00086             nsIRDFResource* container = VALUE_TO_IRDFRESOURCE(idValue);
00087 
00088             // Is the row in the tree?
00089             if ((container == mRows.GetRootResource()) ||
00090                 (mRows.Find(mConflictSet, container) != mRows.Last())) {
00091 
00092                 PR_LOG(gXULTemplateLog, PR_LOG_DEBUG, ("    => passed"));
00093                 Element* element =
00094                     nsTreeRowTestNode::Element::Create(mConflictSet.GetPool(), container);
00095 
00096                 if (! element)
00097                     return NS_ERROR_OUT_OF_MEMORY;
00098 
00099                 inst->AddSupportingElement(element);
00100 
00101                 continue;
00102             }
00103         }
00104 
00105         PR_LOG(gXULTemplateLog, PR_LOG_DEBUG, ("    => failed"));
00106         aInstantiations.Erase(inst--);
00107     }
00108 
00109     return NS_OK;
00110 }
00111 
00112 nsresult
00113 nsTreeRowTestNode::GetAncestorVariables(VariableSet& aVariables) const
00114 {
00115     aVariables.Add(mIdVariable);
00116     return TestNode::GetAncestorVariables(aVariables);
00117 }