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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/. */
#ifndef nsXULTemplateQueryProcessorXML_h__
#define nsXULTemplateQueryProcessorXML_h__
#include "nsIXULTemplateBuilder.h"
#include "nsIXULTemplateQueryProcessor.h"
#include "nsAutoPtr.h"
#include "nsISimpleEnumerator.h"
#include "nsString.h"
#include "nsCOMArray.h"
#include "nsRefPtrHashtable.h"
#include "nsIDOMEventListener.h"
#include "nsIDOMXPathEvaluator.h"
#include "nsXMLBinding.h"
#include "nsCycleCollectionParticipant.h"
#include "nsIXMLHttpRequest.h"
#include "mozilla/Attributes.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/XPathEvaluator.h"
#include "mozilla/dom/XPathResult.h"
class nsXULTemplateQueryProcessorXML;
#define NS_IXMLQUERY_IID \
{0x0358d692, 0xccce, 0x4a97, \
{ 0xb2, 0x51, 0xba, 0x8f, 0x17, 0x0f, 0x3b, 0x6f }}
class nsXMLQuery final : public nsISupports
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IXMLQUERY_IID)
NS_DECL_ISUPPORTS
// return a weak reference to the processor the query was created from
nsXULTemplateQueryProcessorXML* Processor() { return mProcessor; }
// return a weak reference t the member variable for the query
nsIAtom* GetMemberVariable() { return mMemberVariable; }
// return a weak reference to the expression used to generate results
mozilla::dom::XPathExpression* GetResultsExpression()
{ return mResultsExpr; }
// return a weak reference to the additional required bindings
nsXMLBindingSet* GetBindingSet() { return mRequiredBindings; }
// add a required binding for the query
void
AddBinding(nsIAtom* aVar, nsAutoPtr<mozilla::dom::XPathExpression>&& aExpr)
{
if (!mRequiredBindings) {
mRequiredBindings = new nsXMLBindingSet();
}
mRequiredBindings->AddBinding(aVar, mozilla::Move(aExpr));
}
nsXMLQuery(nsXULTemplateQueryProcessorXML* aProcessor,
nsIAtom* aMemberVariable,
nsAutoPtr<mozilla::dom::XPathExpression>&& aResultsExpr)
: mProcessor(aProcessor),
mMemberVariable(aMemberVariable),
mResultsExpr(aResultsExpr)
{ }
protected:
~nsXMLQuery() {}
nsXULTemplateQueryProcessorXML* mProcessor;
nsCOMPtr<nsIAtom> mMemberVariable;
nsAutoPtr<mozilla::dom::XPathExpression> mResultsExpr;
RefPtr<nsXMLBindingSet> mRequiredBindings;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsXMLQuery, NS_IXMLQUERY_IID)
class nsXULTemplateResultSetXML final : public nsISimpleEnumerator
{
private:
// reference back to the query
nsCOMPtr<nsXMLQuery> mQuery;
// the binding set created from <assign> nodes
RefPtr<nsXMLBindingSet> mBindingSet;
// set of results contained in this enumerator
RefPtr<mozilla::dom::XPathResult> mResults;
// current position within the list of results
uint32_t mPosition;
~nsXULTemplateResultSetXML() {}
public:
// nsISupports interface
NS_DECL_ISUPPORTS
// nsISimpleEnumerator interface
NS_DECL_NSISIMPLEENUMERATOR
nsXULTemplateResultSetXML(nsXMLQuery* aQuery,
already_AddRefed<mozilla::dom::XPathResult> aResults,
nsXMLBindingSet* aBindingSet)
: mQuery(aQuery),
mBindingSet(aBindingSet),
mResults(aResults),
mPosition(0)
{}
};
class nsXULTemplateQueryProcessorXML final : public nsIXULTemplateQueryProcessor,
public nsIDOMEventListener
{
public:
nsXULTemplateQueryProcessorXML()
: mGenerationStarted(false)
{}
// nsISupports interface
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsXULTemplateQueryProcessorXML,
nsIXULTemplateQueryProcessor)
// nsIXULTemplateQueryProcessor interface
NS_DECL_NSIXULTEMPLATEQUERYPROCESSOR
// nsIDOMEventListener interface
NS_DECL_NSIDOMEVENTLISTENER
nsXMLBindingSet*
GetOptionalBindingsForRule(nsIDOMNode* aRuleNode);
// create an XPath expression from aExpr, using aNode for
// resolving namespaces
mozilla::dom::XPathExpression*
CreateExpression(const nsAString& aExpr,
nsINode* aNode,
mozilla::ErrorResult& aRv);
private:
~nsXULTemplateQueryProcessorXML() {}
bool mGenerationStarted;
nsRefPtrHashtable<nsISupportsHashKey, nsXMLBindingSet> mRuleToBindingsMap;
nsCOMPtr<mozilla::dom::Element> mRoot;
RefPtr<mozilla::dom::XPathEvaluator> mEvaluator;
nsCOMPtr<nsIXULTemplateBuilder> mTemplateBuilder;
nsCOMPtr<nsIXMLHttpRequest> mRequest;
};
#endif // nsXULTemplateQueryProcessorXML_h__
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