The Tor Browser: content/xul/templates/src/nsRDFConInstanceTestNode.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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/. */

     6 #ifndef nsRDFConInstanceTestNode_h__

     7 #define nsRDFConInstanceTestNode_h__

     9 #include "mozilla/Attributes.h"

    10 #include "nscore.h"

    11 #include "nsRDFTestNode.h"

    12 #include "nsIRDFResource.h"

    13 #include "nsIRDFDataSource.h"

    14 #include "nsXULTemplateQueryProcessorRDF.h"

    16 /**

    17  * Rule network node that tests if a resource is an RDF container, or

    18  * uses multi-attributes to ``contain'' other elements.

    19  */

    20 class nsRDFConInstanceTestNode : public nsRDFTestNode

    21 {

    22 public:

    23     enum Test { eFalse, eTrue, eDontCare };

    25     nsRDFConInstanceTestNode(TestNode* aParent,

    26                              nsXULTemplateQueryProcessorRDF* aProcessor,

    27                              nsIAtom* aContainerVariable,

    28                              Test aContainer,

    29                              Test aEmpty);

    31     virtual nsresult FilterInstantiations(InstantiationSet& aInstantiations,

    32                                           bool* aCantHandleYet) const MOZ_OVERRIDE;

    34     virtual bool

    35     CanPropagate(nsIRDFResource* aSource,

    36                  nsIRDFResource* aProperty,

    37                  nsIRDFNode* aTarget,

    38                  Instantiation& aInitialBindings) const MOZ_OVERRIDE;

    40     virtual void

    41     Retract(nsIRDFResource* aSource,

    42             nsIRDFResource* aProperty,

    43             nsIRDFNode* aTarget) const MOZ_OVERRIDE;

    46     class Element : public MemoryElement {

    47     public:

    48         Element(nsIRDFResource* aContainer,

    49                 Test aContainerTest,

    50                 Test aEmptyTest)

    51             : mContainer(aContainer),

    52               mContainerTest(aContainerTest),

    53               mEmptyTest(aEmptyTest) {

    54             MOZ_COUNT_CTOR(nsRDFConInstanceTestNode::Element); }

    56         virtual ~Element() { MOZ_COUNT_DTOR(nsRDFConInstanceTestNode::Element); }

    58         virtual const char* Type() const MOZ_OVERRIDE {

    59             return "nsRDFConInstanceTestNode::Element"; }

    61         virtual PLHashNumber Hash() const MOZ_OVERRIDE {

    62             return mozilla::HashGeneric(mContainerTest, mEmptyTest, mContainer.get());

    63         }

    65         virtual bool Equals(const MemoryElement& aElement) const MOZ_OVERRIDE {

    66             if (aElement.Type() == Type()) {

    67                 const Element& element = static_cast<const Element&>(aElement);

    68                 return mContainer == element.mContainer

    69                     && mContainerTest == element.mContainerTest

    70                     && mEmptyTest == element.mEmptyTest;

    71             }

    72             return false; }

    74     protected:

    75         nsCOMPtr<nsIRDFResource> mContainer;

    76         Test mContainerTest;

    77         Test mEmptyTest;

    78     };

    80 protected:

    81     nsXULTemplateQueryProcessorRDF* mProcessor;

    82     nsCOMPtr<nsIAtom> mContainerVariable;

    83     Test mContainer;

    84     Test mEmpty;

    85 };

    87 #endif // nsRDFConInstanceTestNode_h__

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