/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "nsXULTemplateResultRDF.h" #include "nsXULContentUtils.h" // XXXndeakin for some reason, making this class have classinfo breaks trees. //#include "nsIDOMClassInfo.h" NS_IMPL_CYCLE_COLLECTION(nsXULTemplateResultRDF, mQuery) NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsXULTemplateResultRDF) NS_INTERFACE_MAP_ENTRY(nsIXULTemplateResult) NS_INTERFACE_MAP_ENTRY(nsISupports) NS_INTERFACE_MAP_END NS_IMPL_CYCLE_COLLECTING_ADDREF(nsXULTemplateResultRDF) NS_IMPL_CYCLE_COLLECTING_RELEASE(nsXULTemplateResultRDF) nsXULTemplateResultRDF::nsXULTemplateResultRDF(nsIRDFResource* aNode) : mQuery(nullptr), mNode(aNode) { } nsXULTemplateResultRDF::nsXULTemplateResultRDF(nsRDFQuery* aQuery, const Instantiation& aInst, nsIRDFResource *aNode) : mQuery(aQuery), mNode(aNode), mInst(aInst) { } nsXULTemplateResultRDF::~nsXULTemplateResultRDF() { } NS_IMETHODIMP nsXULTemplateResultRDF::GetIsContainer(bool* aIsContainer) { *aIsContainer = false; if (mNode) { nsXULTemplateQueryProcessorRDF* processor = GetProcessor(); if (processor) return processor->CheckContainer(mNode, aIsContainer); } return NS_OK; } NS_IMETHODIMP nsXULTemplateResultRDF::GetIsEmpty(bool* aIsEmpty) { *aIsEmpty = true; if (mNode) { nsXULTemplateQueryProcessorRDF* processor = GetProcessor(); if (processor) return processor->CheckEmpty(mNode, aIsEmpty); } return NS_OK; } NS_IMETHODIMP nsXULTemplateResultRDF::GetMayProcessChildren(bool* aMayProcessChildren) { // RDF always allows recursion *aMayProcessChildren = true; return NS_OK; } NS_IMETHODIMP nsXULTemplateResultRDF::GetId(nsAString& aId) { if (! mNode) return NS_ERROR_FAILURE; const char* uri; mNode->GetValueConst(&uri); CopyUTF8toUTF16(uri, aId); return NS_OK; } NS_IMETHODIMP nsXULTemplateResultRDF::GetResource(nsIRDFResource** aResource) { *aResource = mNode; NS_IF_ADDREF(*aResource); return NS_OK; } NS_IMETHODIMP nsXULTemplateResultRDF::GetType(nsAString& aType) { aType.Truncate(); nsresult rv = NS_OK; nsXULTemplateQueryProcessorRDF* processor = GetProcessor(); if (processor) { bool found; rv = processor->CheckIsSeparator(mNode, &found); if (NS_SUCCEEDED(rv) && found) aType.AssignLiteral("separator"); } return rv; } NS_IMETHODIMP nsXULTemplateResultRDF::GetBindingFor(nsIAtom* aVar, nsAString& aValue) { nsCOMPtr<nsIRDFNode> val; GetAssignment(aVar, getter_AddRefs(val)); return nsXULContentUtils::GetTextForNode(val, aValue); } NS_IMETHODIMP nsXULTemplateResultRDF::GetBindingObjectFor(nsIAtom* aVar, nsISupports** aValue) { GetAssignment(aVar, (nsIRDFNode **)aValue); return NS_OK; } NS_IMETHODIMP nsXULTemplateResultRDF::RuleMatched(nsISupports* aQuery, nsIDOMNode* aRuleNode) { // when a rule matches, set the bindings that must be used. nsXULTemplateQueryProcessorRDF* processor = GetProcessor(); if (processor) { RDFBindingSet* bindings = processor->GetBindingsForRule(aRuleNode); if (bindings) { nsresult rv = mBindingValues.SetBindingSet(bindings); if (NS_FAILED(rv)) return rv; bindings->AddDependencies(mNode, this); } } return NS_OK; } NS_IMETHODIMP nsXULTemplateResultRDF::HasBeenRemoved() { // when a result is no longer used, clean up the dependencies and // memory elements that refer to it mBindingValues.RemoveDependencies(mNode, this); nsXULTemplateQueryProcessorRDF* processor = GetProcessor(); if (processor) processor->RemoveMemoryElements(mInst, this); return NS_OK; } void nsXULTemplateResultRDF::GetAssignment(nsIAtom* aVar, nsIRDFNode** aValue) { // look up a variable in the assignments map *aValue = nullptr; mInst.mAssignments.GetAssignmentFor(aVar, aValue); // if not found, look up the variable in the bindings if (! *aValue) mBindingValues.GetAssignmentFor(this, aVar, aValue); } bool nsXULTemplateResultRDF::SyncAssignments(nsIRDFResource* aSubject, nsIRDFResource* aPredicate, nsIRDFNode* aTarget) { // synchronize the bindings when an assertion is added or removed RDFBindingSet* bindingset = mBindingValues.GetBindingSet(); if (bindingset) { return bindingset->SyncAssignments(aSubject, aPredicate, aTarget, (aSubject == mNode) ? mQuery->GetMemberVariable() : nullptr, this, mBindingValues); } return false; } bool nsXULTemplateResultRDF::HasMemoryElement(const MemoryElement& aMemoryElement) { MemoryElementSet::ConstIterator last = mInst.mSupport.Last(); for (MemoryElementSet::ConstIterator element = mInst.mSupport.First(); element != last; ++element) { if ((*element).Equals(aMemoryElement)) return true; } return false; }