зеркало из https://github.com/mozilla/gecko-dev.git
122 строки
4.5 KiB
C++
122 строки
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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//////////////////////////////////////////////////////////////////////////////////////////
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#ifndef nsXBLService_h_
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#define nsXBLService_h_
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#include "nsString.h"
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#include "nsWeakReference.h"
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#include "nsTArray.h"
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#include "nsDataHashtable.h"
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#include "nsHashKeys.h"
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class nsXBLBinding;
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class nsXBLDocumentInfo;
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class nsIContent;
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class nsIDocument;
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class nsString;
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class nsIURI;
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class nsIPrincipal;
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namespace mozilla {
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namespace dom {
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class EventTarget;
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}
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}
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class nsXBLService final : public nsSupportsWeakReference
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{
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NS_DECL_ISUPPORTS
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static nsXBLService* gInstance;
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static void Init();
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static void Shutdown() {
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NS_IF_RELEASE(gInstance);
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}
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static nsXBLService* GetInstance() { return gInstance; }
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static bool IsChromeOrResourceURI(nsIURI* aURI);
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// This function loads a particular XBL file and installs all of the bindings
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// onto the element. aOriginPrincipal must not be null here.
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nsresult LoadBindings(nsIContent* aContent, nsIURI* aURL,
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nsIPrincipal* aOriginPrincipal,
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nsXBLBinding** aBinding, bool* aResolveStyle);
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// Indicates whether or not a binding is fully loaded.
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nsresult BindingReady(nsIContent* aBoundElement, nsIURI* aURI, bool* aIsReady);
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// This method checks the hashtable and then calls FetchBindingDocument on a
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// miss. aOriginPrincipal or aBoundDocument may be null to bypass security
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// checks.
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nsresult LoadBindingDocumentInfo(nsIContent* aBoundElement,
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nsIDocument* aBoundDocument,
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nsIURI* aBindingURI,
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nsIPrincipal* aOriginPrincipal,
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bool aForceSyncLoad,
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nsXBLDocumentInfo** aResult);
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// Used by XUL key bindings and for window XBL.
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static nsresult AttachGlobalKeyHandler(mozilla::dom::EventTarget* aTarget);
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static nsresult DetachGlobalKeyHandler(mozilla::dom::EventTarget* aTarget);
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private:
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nsXBLService();
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virtual ~nsXBLService();
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protected:
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// This function clears out the bindings on a given content node.
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nsresult FlushStyleBindings(nsIContent* aContent);
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// This method synchronously loads and parses an XBL file.
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nsresult FetchBindingDocument(nsIContent* aBoundElement, nsIDocument* aBoundDocument,
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nsIURI* aDocumentURI, nsIURI* aBindingURI,
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nsIPrincipal* aOriginPrincipal, bool aForceSyncLoad,
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nsIDocument** aResult);
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/**
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* This method calls the one below with an empty |aDontExtendURIs| array.
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*/
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nsresult GetBinding(nsIContent* aBoundElement, nsIURI* aURI,
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bool aPeekFlag, nsIPrincipal* aOriginPrincipal,
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bool* aIsReady, nsXBLBinding** aResult);
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/**
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* This method loads a binding doc and then builds the specific binding
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* required. It can also peek without building.
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* @param aBoundElement the element to get a binding for
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* @param aURI the binding URI
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* @param aPeekFlag if true then just peek to see if the binding is ready
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* @param aIsReady [out] if the binding is ready or not
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* @param aResult [out] where to store the resulting binding (not used if
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* aPeekFlag is true, otherwise it must be non-null)
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* @param aDontExtendURIs a set of URIs that are already bound to this
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* element. If a binding extends any of these then further loading
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* is aborted (because it would lead to the binding extending itself)
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* and NS_ERROR_ILLEGAL_VALUE is returned.
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*
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* @note This method always calls LoadBindingDocumentInfo(), so it's
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* enough to funnel all security checks through that function.
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*/
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nsresult GetBinding(nsIContent* aBoundElement, nsIURI* aURI,
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bool aPeekFlag, nsIPrincipal* aOriginPrincipal,
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bool* aIsReady, nsXBLBinding** aResult,
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nsTArray<nsIURI*>& aDontExtendURIs);
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// MEMBER VARIABLES
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public:
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static bool gDisableChromeCache;
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static bool gAllowDataURIs; // Whether we should allow data
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// urls in -moz-binding. Needed for
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// testing.
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};
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#endif
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