dom/xul/templates/nsContentTestNode.h
author Mike Hommey <mh+mozilla@glandium.org>
Thu, 26 Mar 2015 12:07:17 +0900
changeset 258314 fc1e894eec2fbd34b745cd94f505080427d24705
parent 257987 a20c7910a82fa2df2f3398c1108d102bac9128b0
child 270304 7617f4ffb3145987ec717a29789ff5636889fbf8
permissions -rw-r--r--
Bug 1147207 - Add a ComposedFinder class that acts like a FileFinder proxy over multiple FileFinders. r=gps, a=sledru

/* -*- 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 nsContentTestNode_h__
#define nsContentTestNode_h__

#include "mozilla/Attributes.h"
#include "nscore.h"
#include "nsRuleNetwork.h"
#include "nsIAtom.h"
#include "nsIDOMDocument.h"

class nsIXULTemplateBuilder;

/**
 * The nsContentTestNode is always the top node in a query's rule network. It
 * exists so that Constrain can filter out resources that aren't part of a
 * result.
 */
class nsContentTestNode : public TestNode
{
public:
    nsContentTestNode(nsXULTemplateQueryProcessorRDF* aProcessor,
                      nsIAtom* aContentVariable);

    virtual nsresult FilterInstantiations(InstantiationSet& aInstantiations,
                                          bool* aCantHandleYet) const override;

    nsresult
    Constrain(InstantiationSet& aInstantiations) override;

    void SetTag(nsIAtom* aTag, nsIDOMDocument* aDocument)
    {
        mTag = aTag;
        mDocument = aDocument;
    }

protected:
    nsXULTemplateQueryProcessorRDF *mProcessor;
    nsIDOMDocument* mDocument;
    nsCOMPtr<nsIAtom> mRefVariable;
    nsCOMPtr<nsIAtom> mTag;
};

#endif // nsContentTestNode_h__