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/* -*- 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;
}
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