Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #include "nsContentTestNode.h"
       7             : #include "nsIRDFResource.h"
       8             : #include "nsIAtom.h"
       9             : #include "nsIDOMElement.h"
      10             : #include "nsXULContentUtils.h"
      11             : #include "nsIXULTemplateResult.h"
      12             : #include "nsIXULTemplateBuilder.h"
      13             : #include "nsXULTemplateQueryProcessorRDF.h"
      14             : 
      15             : #include "mozilla/Logging.h"
      16             : 
      17             : using mozilla::LogLevel;
      18             : 
      19             : extern mozilla::LazyLogModule gXULTemplateLog;
      20             : 
      21           0 : nsContentTestNode::nsContentTestNode(nsXULTemplateQueryProcessorRDF* aProcessor,
      22           0 :                                      nsIAtom* aRefVariable)
      23             :     : TestNode(nullptr),
      24             :       mProcessor(aProcessor),
      25             :       mDocument(nullptr),
      26             :       mRefVariable(aRefVariable),
      27           0 :       mTag(nullptr)
      28             : {
      29           0 :     if (MOZ_LOG_TEST(gXULTemplateLog, LogLevel::Debug)) {
      30           0 :         nsAutoString tag(NS_LITERAL_STRING("(none)"));
      31           0 :         if (mTag)
      32           0 :             mTag->ToString(tag);
      33             : 
      34           0 :         nsAutoString refvar(NS_LITERAL_STRING("(none)"));
      35           0 :         if (aRefVariable)
      36           0 :             aRefVariable->ToString(refvar);
      37             : 
      38           0 :         MOZ_LOG(gXULTemplateLog, LogLevel::Debug,
      39             :                ("nsContentTestNode[%p]: ref-var=%s tag=%s",
      40             :                 this, NS_ConvertUTF16toUTF8(refvar).get(),
      41             :                 NS_ConvertUTF16toUTF8(tag).get()));
      42             :     }
      43           0 : }
      44             : 
      45             : nsresult
      46           0 : nsContentTestNode::FilterInstantiations(InstantiationSet& aInstantiations,
      47             :                                         bool* aCantHandleYet) const
      48             : 
      49             : {
      50           0 :     if (aCantHandleYet)
      51           0 :         *aCantHandleYet = false;
      52           0 :     return NS_OK;
      53             : }
      54             : 
      55             : nsresult
      56           0 : nsContentTestNode::Constrain(InstantiationSet& aInstantiations)
      57             : {
      58             :     // contrain the matches to those that have matched in the template builder
      59             : 
      60           0 :     nsIXULTemplateBuilder* builder = mProcessor->GetBuilder();
      61           0 :     if (!builder) {
      62           0 :         aInstantiations.Clear();
      63           0 :         return NS_OK;
      64             :     }
      65             : 
      66             :     nsresult rv;
      67             : 
      68           0 :     InstantiationSet::Iterator last = aInstantiations.Last();
      69           0 :     for (InstantiationSet::Iterator inst = aInstantiations.First(); inst != last; ++inst) {
      70             : 
      71           0 :         nsCOMPtr<nsIRDFNode> refValue;
      72           0 :         bool hasRefBinding = inst->mAssignments.GetAssignmentFor(mRefVariable,
      73           0 :                                                                    getter_AddRefs(refValue));
      74           0 :         if (hasRefBinding) {
      75           0 :             nsCOMPtr<nsIRDFResource> refResource = do_QueryInterface(refValue);
      76           0 :             if (refResource) {
      77             :                 bool generated;
      78           0 :                 rv = builder->HasGeneratedContent(refResource, mTag, &generated);
      79           0 :                 if (NS_FAILED(rv)) return rv;
      80             : 
      81           0 :                 if (generated)
      82           0 :                     continue;
      83             :             }
      84             :         }
      85             : 
      86           0 :         aInstantiations.Erase(inst--);
      87             :     }
      88             : 
      89           0 :     return NS_OK;
      90             : }