зеркало из https://github.com/mozilla/gecko-dev.git
709 строки
20 KiB
C++
709 строки
20 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 sw=2 et tw=80: */
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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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#ifndef nsDOMClassInfo_h___
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#define nsDOMClassInfo_h___
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#include "mozilla/Attributes.h"
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#include "nsIXPCScriptable.h"
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#include "nsIScriptGlobalObject.h"
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#include "nsIDOMScriptObjectFactory.h"
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#ifdef XP_WIN
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#undef GetClassName
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#endif
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class nsContentList;
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class nsDocument;
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class nsGlobalWindow;
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class nsIScriptSecurityManager;
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struct nsDOMClassInfoData;
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typedef nsIClassInfo* (*nsDOMClassInfoConstructorFnc)
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(nsDOMClassInfoData* aData);
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typedef nsresult (*nsDOMConstructorFunc)(nsISupports** aNewObject);
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struct nsDOMClassInfoData
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{
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const char *mName;
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const PRUnichar *mNameUTF16;
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union {
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nsDOMClassInfoConstructorFnc mConstructorFptr;
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nsDOMClassInfoExternalConstructorFnc mExternalConstructorFptr;
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} u;
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nsIClassInfo *mCachedClassInfo; // low bit is set to 1 if external,
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// so be sure to mask if necessary!
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const nsIID *mProtoChainInterface;
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const nsIID **mInterfaces;
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uint32_t mScriptableFlags : 31; // flags must not use more than 31 bits!
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uint32_t mHasClassInterface : 1;
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uint32_t mInterfacesBitmap;
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bool mChromeOnly : 1;
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bool mAllowXBL : 1;
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bool mDisabled : 1;
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#ifdef DEBUG
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uint32_t mDebugID;
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#endif
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};
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struct nsExternalDOMClassInfoData : public nsDOMClassInfoData
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{
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const nsCID *mConstructorCID;
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};
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// To be used with the nsDOMClassInfoData::mCachedClassInfo pointer.
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// The low bit is set when we created a generic helper for an external
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// (which holds on to the nsDOMClassInfoData).
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#define GET_CLEAN_CI_PTR(_ptr) (nsIClassInfo*)(uintptr_t(_ptr) & ~0x1)
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#define MARK_EXTERNAL(_ptr) (nsIClassInfo*)(uintptr_t(_ptr) | 0x1)
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#define IS_EXTERNAL(_ptr) (uintptr_t(_ptr) & 0x1)
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class nsDOMClassInfo : public nsXPCClassInfo
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{
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friend class nsHTMLDocumentSH;
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public:
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nsDOMClassInfo(nsDOMClassInfoData* aData);
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virtual ~nsDOMClassInfo();
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NS_DECL_NSIXPCSCRIPTABLE
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NS_DECL_ISUPPORTS
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NS_DECL_NSICLASSINFO
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// Helper method that returns a *non* refcounted pointer to a
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// helper. So please note, don't release this pointer, if you do,
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// you better make sure you've addreffed before release.
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//
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// Whaaaaa! I wanted to name this method GetClassInfo, but nooo,
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// some of Microsoft devstudio's headers #defines GetClassInfo to
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// GetClassInfoA so I can't, those $%#@^! bastards!!! What gives
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// them the right to do that?
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static nsIClassInfo* GetClassInfoInstance(nsDOMClassInfoData* aData);
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static void ShutDown();
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static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
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{
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return new nsDOMClassInfo(aData);
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}
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/*
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* The following two functions exist because of the way that Xray wrappers
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* work. In order to allow scriptable helpers to define non-IDL defined but
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* still "safe" properties for Xray wrappers, we call into the scriptable
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* helper with |obj| being the wrapper.
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*
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* Ideally, that would be the end of the story, however due to complications
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* dealing with document.domain, it's possible to end up in a scriptable
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* helper with a wrapper, even though we should be treating the lookup as a
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* transparent one.
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*
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* Note: So ObjectIsNativeWrapper(cx, obj) check usually means "through xray
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* wrapper this part is not visible" while combined with
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* || xpc::WrapperFactory::XrayWrapperNotShadowing(obj) it means "through
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* xray wrapper it is visible only if it does not hide any native property."
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*/
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static bool ObjectIsNativeWrapper(JSContext* cx, JSObject* obj);
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static nsISupports *GetNative(nsIXPConnectWrappedNative *wrapper, JSObject *obj);
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static nsIXPConnect *XPConnect()
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{
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return sXPConnect;
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}
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static nsIScriptSecurityManager *ScriptSecurityManager()
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{
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return sSecMan;
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}
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protected:
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friend nsIClassInfo* NS_GetDOMClassInfoInstance(nsDOMClassInfoID aID);
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const nsDOMClassInfoData* mData;
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virtual void PreserveWrapper(nsISupports *aNative) MOZ_OVERRIDE
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{
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}
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virtual uint32_t GetInterfacesBitmap() MOZ_OVERRIDE
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{
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return mData->mInterfacesBitmap;
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}
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static nsresult Init();
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static nsresult RegisterClassProtos(int32_t aDOMClassInfoID);
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static nsresult RegisterExternalClasses();
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nsresult ResolveConstructor(JSContext *cx, JSObject *obj,
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JSObject **objp);
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// Checks if id is a number and returns the number, if aIsNumber is
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// non-null it's set to true if the id is a number and false if it's
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// not a number. If id is not a number this method returns -1
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static int32_t GetArrayIndexFromId(JSContext *cx, JS::Handle<jsid> id,
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bool *aIsNumber = nullptr);
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static inline bool IsReadonlyReplaceable(jsid id)
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{
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return (id == sParent_id ||
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id == sScrollbars_id ||
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id == sContent_id ||
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id == sMenubar_id ||
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id == sToolbar_id ||
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id == sLocationbar_id ||
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id == sPersonalbar_id ||
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id == sStatusbar_id ||
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id == sControllers_id ||
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id == sScrollX_id ||
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id == sScrollY_id ||
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id == sScrollMaxX_id ||
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id == sScrollMaxY_id ||
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id == sLength_id ||
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id == sFrames_id ||
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id == sSelf_id);
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}
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static nsIXPConnect *sXPConnect;
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static nsIScriptSecurityManager *sSecMan;
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// nsIXPCScriptable code
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static nsresult DefineStaticJSVals(JSContext *cx);
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static bool sIsInitialized;
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public:
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static jsid sParent_id;
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static jsid sScrollbars_id;
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static jsid sLocation_id;
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static jsid sConstructor_id;
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static jsid s_content_id;
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static jsid sContent_id;
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static jsid sMenubar_id;
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static jsid sToolbar_id;
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static jsid sLocationbar_id;
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static jsid sPersonalbar_id;
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static jsid sStatusbar_id;
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static jsid sControllers_id;
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static jsid sLength_id;
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static jsid sScrollX_id;
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static jsid sScrollY_id;
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static jsid sScrollMaxX_id;
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static jsid sScrollMaxY_id;
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static jsid sItem_id;
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static jsid sNamedItem_id;
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static jsid sEnumerate_id;
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static jsid sTop_id;
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static jsid sDocument_id;
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static jsid sFrames_id;
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static jsid sSelf_id;
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static jsid sJava_id;
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static jsid sWrappedJSObject_id;
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};
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// THIS ONE ISN'T SAFE!! It assumes that the private of the JSObject is
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// an nsISupports.
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inline
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const nsQueryInterface
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do_QueryWrappedNative(nsIXPConnectWrappedNative *wrapper, JSObject *obj)
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{
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return nsQueryInterface(nsDOMClassInfo::GetNative(wrapper, obj));
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}
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// THIS ONE ISN'T SAFE!! It assumes that the private of the JSObject is
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// an nsISupports.
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inline
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const nsQueryInterfaceWithError
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do_QueryWrappedNative(nsIXPConnectWrappedNative *wrapper, JSObject *obj,
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nsresult *aError)
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{
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return nsQueryInterfaceWithError(nsDOMClassInfo::GetNative(wrapper, obj),
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aError);
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}
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inline
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nsQueryInterface
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do_QueryWrapper(JSContext *cx, JSObject *obj)
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{
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nsISupports *native =
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nsDOMClassInfo::XPConnect()->GetNativeOfWrapper(cx, obj);
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return nsQueryInterface(native);
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}
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inline
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nsQueryInterfaceWithError
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do_QueryWrapper(JSContext *cx, JSObject *obj, nsresult* error)
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{
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nsISupports *native =
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nsDOMClassInfo::XPConnect()->GetNativeOfWrapper(cx, obj);
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return nsQueryInterfaceWithError(native, error);
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}
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typedef nsDOMClassInfo nsDOMGenericSH;
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// Makes sure that the wrapper is preserved if new properties are added.
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class nsEventTargetSH : public nsDOMGenericSH
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{
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protected:
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nsEventTargetSH(nsDOMClassInfoData* aData) : nsDOMGenericSH(aData)
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{
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}
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virtual ~nsEventTargetSH()
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{
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}
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public:
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NS_IMETHOD PreCreate(nsISupports *nativeObj, JSContext *cx,
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JSObject *globalObj, JSObject **parentObj) MOZ_OVERRIDE;
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NS_IMETHOD AddProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
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JSObject *obj, jsid id, jsval *vp, bool *_retval) MOZ_OVERRIDE;
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virtual void PreserveWrapper(nsISupports *aNative) MOZ_OVERRIDE;
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static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
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{
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return new nsEventTargetSH(aData);
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}
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};
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// Window scriptable helper
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class nsWindowSH : public nsDOMGenericSH
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{
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protected:
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nsWindowSH(nsDOMClassInfoData *aData) : nsDOMGenericSH(aData)
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{
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}
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virtual ~nsWindowSH()
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{
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}
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static nsresult GlobalResolve(nsGlobalWindow *aWin, JSContext *cx,
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JS::Handle<JSObject*> obj, JS::Handle<jsid> id,
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bool *did_resolve);
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public:
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NS_IMETHOD PreCreate(nsISupports *nativeObj, JSContext *cx,
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JSObject *globalObj, JSObject **parentObj) MOZ_OVERRIDE;
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NS_IMETHOD PostCreatePrototype(JSContext * cx, JSObject * proto) MOZ_OVERRIDE;
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#ifdef DEBUG
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NS_IMETHOD PostCreate(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
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JSObject *obj) MOZ_OVERRIDE
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{
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nsCOMPtr<nsIScriptGlobalObject> sgo(do_QueryWrappedNative(wrapper));
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NS_ASSERTION(!sgo || sgo->GetGlobalJSObject() == nullptr,
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"Multiple wrappers created for global object!");
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return NS_OK;
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}
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virtual uint32_t GetScriptableFlags() MOZ_OVERRIDE
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{
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return nsDOMGenericSH::GetScriptableFlags() |
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nsIXPCScriptable::WANT_POSTCREATE;
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}
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#endif
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NS_IMETHOD Enumerate(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
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JSObject *obj, bool *_retval) MOZ_OVERRIDE;
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NS_IMETHOD NewResolve(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
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JSObject *obj, jsid id, uint32_t flags,
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JSObject **objp, bool *_retval) MOZ_OVERRIDE;
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NS_IMETHOD Finalize(nsIXPConnectWrappedNative *wrapper, JSFreeOp *fop,
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JSObject *obj) MOZ_OVERRIDE;
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NS_IMETHOD OuterObject(nsIXPConnectWrappedNative *wrapper, JSContext * cx,
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JSObject * obj, JSObject * *_retval) MOZ_OVERRIDE;
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static bool GlobalScopePolluterNewResolve(JSContext *cx, JS::Handle<JSObject*> obj,
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JS::Handle<jsid> id, unsigned flags,
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JS::MutableHandle<JSObject*> objp);
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static bool GlobalScopePolluterGetProperty(JSContext *cx, JS::Handle<JSObject*> obj,
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JS::Handle<jsid> id, JS::MutableHandle<JS::Value> vp);
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static bool InvalidateGlobalScopePolluter(JSContext *cx,
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JS::Handle<JSObject*> obj);
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static nsresult InstallGlobalScopePolluter(JSContext *cx,
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JS::Handle<JSObject*> obj);
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static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
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{
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return new nsWindowSH(aData);
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}
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};
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// Location scriptable helper
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class nsLocationSH : public nsDOMGenericSH
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{
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protected:
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nsLocationSH(nsDOMClassInfoData* aData) : nsDOMGenericSH(aData)
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{
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}
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virtual ~nsLocationSH()
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{
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}
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public:
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NS_IMETHOD CheckAccess(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
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JSObject *obj, jsid id, uint32_t mode,
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jsval *vp, bool *_retval) MOZ_OVERRIDE;
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NS_IMETHOD PreCreate(nsISupports *nativeObj, JSContext *cx,
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JSObject *globalObj, JSObject **parentObj) MOZ_OVERRIDE;
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NS_IMETHODIMP AddProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
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JSObject *obj, jsid id, jsval *vp, bool *_retval);
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static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
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{
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return new nsLocationSH(aData);
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}
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};
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// Generic array scriptable helper
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class nsGenericArraySH : public nsDOMClassInfo
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{
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protected:
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nsGenericArraySH(nsDOMClassInfoData* aData) : nsDOMClassInfo(aData)
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{
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}
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virtual ~nsGenericArraySH()
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{
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}
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public:
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NS_IMETHOD NewResolve(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
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JSObject *obj, jsid id, uint32_t flags,
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JSObject **objp, bool *_retval) MOZ_OVERRIDE;
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NS_IMETHOD Enumerate(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
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JSObject *obj, bool *_retval) MOZ_OVERRIDE;
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virtual nsresult GetLength(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
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JSObject *obj, uint32_t *length);
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static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
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{
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return new nsGenericArraySH(aData);
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}
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};
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// Array scriptable helper
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class nsArraySH : public nsGenericArraySH
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{
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protected:
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nsArraySH(nsDOMClassInfoData* aData) : nsGenericArraySH(aData)
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{
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}
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virtual ~nsArraySH()
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{
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}
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// Subclasses need to override this, if the implementation can't fail it's
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// allowed to not set *aResult.
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virtual nsISupports* GetItemAt(nsISupports *aNative, uint32_t aIndex,
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nsWrapperCache **aCache, nsresult *aResult) = 0;
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public:
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NS_IMETHOD GetProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
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JSObject *obj, jsid id, jsval *vp, bool *_retval) MOZ_OVERRIDE;
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private:
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// Not implemented, nothing should create an instance of this class.
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static nsIClassInfo *doCreate(nsDOMClassInfoData* aData);
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};
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// HTMLAllCollection
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extern JSClass sHTMLDocumentAllClass;
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class nsHTMLDocumentSH
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{
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protected:
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static bool GetDocumentAllNodeList(JSContext *cx, JS::Handle<JSObject*> obj,
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nsDocument *doc,
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nsContentList **nodeList);
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public:
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static bool DocumentAllGetProperty(JSContext *cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id,
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JS::MutableHandle<JS::Value> vp);
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static bool DocumentAllNewResolve(JSContext *cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id,
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unsigned flags, JS::MutableHandle<JSObject*> objp);
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static void ReleaseDocument(JSFreeOp *fop, JSObject *obj);
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static bool CallToGetPropMapper(JSContext *cx, unsigned argc, jsval *vp);
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};
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// String array helper
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class nsStringArraySH : public nsGenericArraySH
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{
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protected:
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nsStringArraySH(nsDOMClassInfoData* aData) : nsGenericArraySH(aData)
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{
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}
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virtual ~nsStringArraySH()
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{
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}
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virtual nsresult GetStringAt(nsISupports *aNative, int32_t aIndex,
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nsAString& aResult) = 0;
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public:
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NS_IMETHOD GetProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
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JSObject *obj, jsid id, jsval *vp, bool *_retval) MOZ_OVERRIDE;
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};
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// History helper
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class nsHistorySH : public nsStringArraySH
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{
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protected:
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nsHistorySH(nsDOMClassInfoData* aData) : nsStringArraySH(aData)
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{
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}
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virtual ~nsHistorySH()
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{
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}
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virtual nsresult GetStringAt(nsISupports *aNative, int32_t aIndex,
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nsAString& aResult) MOZ_OVERRIDE;
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public:
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NS_IMETHOD PreCreate(nsISupports *nativeObj, JSContext *cx,
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JSObject *globalObj, JSObject **parentObj) MOZ_OVERRIDE;
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NS_IMETHOD GetProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
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JSObject *obj, jsid id, jsval *vp, bool *_retval) MOZ_OVERRIDE;
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static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
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{
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return new nsHistorySH(aData);
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}
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};
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// StringList scriptable helper
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class nsStringListSH : public nsStringArraySH
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{
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protected:
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nsStringListSH(nsDOMClassInfoData* aData) : nsStringArraySH(aData)
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{
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}
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virtual ~nsStringListSH()
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{
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}
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virtual nsresult GetStringAt(nsISupports *aNative, int32_t aIndex,
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nsAString& aResult) MOZ_OVERRIDE;
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public:
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// Inherit GetProperty, Enumerate from nsStringArraySH
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static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
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{
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return new nsStringListSH(aData);
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}
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};
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// MediaList helper
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class nsMediaListSH : public nsStringArraySH
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{
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protected:
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nsMediaListSH(nsDOMClassInfoData* aData) : nsStringArraySH(aData)
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{
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}
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virtual ~nsMediaListSH()
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{
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}
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virtual nsresult GetStringAt(nsISupports *aNative, int32_t aIndex,
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nsAString& aResult) MOZ_OVERRIDE;
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public:
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static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
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{
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return new nsMediaListSH(aData);
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}
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};
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// StyleSheetList helper
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class nsStyleSheetListSH : public nsArraySH
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{
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protected:
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nsStyleSheetListSH(nsDOMClassInfoData* aData) : nsArraySH(aData)
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{
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}
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virtual ~nsStyleSheetListSH()
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{
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}
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virtual nsISupports* GetItemAt(nsISupports *aNative, uint32_t aIndex,
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nsWrapperCache **aCache, nsresult *aResult) MOZ_OVERRIDE;
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public:
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static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
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{
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return new nsStyleSheetListSH(aData);
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}
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};
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// CSSRuleList helper
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class nsCSSRuleListSH : public nsArraySH
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{
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protected:
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nsCSSRuleListSH(nsDOMClassInfoData* aData) : nsArraySH(aData)
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{
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}
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virtual ~nsCSSRuleListSH()
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{
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}
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virtual nsISupports* GetItemAt(nsISupports *aNative, uint32_t aIndex,
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|
nsWrapperCache **aCache, nsresult *aResult) MOZ_OVERRIDE;
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public:
|
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static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
|
|
{
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return new nsCSSRuleListSH(aData);
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}
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};
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// WebApps Storage helpers
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class nsStorage2SH : public nsDOMGenericSH
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{
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protected:
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nsStorage2SH(nsDOMClassInfoData* aData) : nsDOMGenericSH(aData)
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{
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}
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virtual ~nsStorage2SH()
|
|
{
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}
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NS_IMETHOD NewResolve(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
|
|
JSObject *obj, jsid id, uint32_t flags,
|
|
JSObject **objp, bool *_retval) MOZ_OVERRIDE;
|
|
NS_IMETHOD SetProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
|
|
JSObject *obj, jsid id, jsval *vp, bool *_retval) MOZ_OVERRIDE;
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|
NS_IMETHOD GetProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
|
|
JSObject *obj, jsid id, jsval *vp, bool *_retval) MOZ_OVERRIDE;
|
|
NS_IMETHOD DelProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
|
|
JSObject *obj, jsid id, bool *_retval) MOZ_OVERRIDE;
|
|
NS_IMETHOD NewEnumerate(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
|
|
JSObject *obj, uint32_t enum_op, jsval *statep,
|
|
jsid *idp, bool *_retval) MOZ_OVERRIDE;
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|
|
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public:
|
|
static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
|
|
{
|
|
return new nsStorage2SH(aData);
|
|
}
|
|
};
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// Event handler 'this' translator class, this is called by XPConnect
|
|
// when a "function interface" (nsIDOMEventListener) is called, this
|
|
// class extracts 'this' fomr the first argument to the called
|
|
// function (nsIDOMEventListener::HandleEvent(in nsIDOMEvent)), this
|
|
// class will pass back nsIDOMEvent::currentTarget to be used as
|
|
// 'this'.
|
|
|
|
class nsEventListenerThisTranslator : public nsIXPCFunctionThisTranslator
|
|
{
|
|
public:
|
|
nsEventListenerThisTranslator()
|
|
{
|
|
}
|
|
|
|
virtual ~nsEventListenerThisTranslator()
|
|
{
|
|
}
|
|
|
|
// nsISupports
|
|
NS_DECL_ISUPPORTS
|
|
|
|
// nsIXPCFunctionThisTranslator
|
|
NS_DECL_NSIXPCFUNCTIONTHISTRANSLATOR
|
|
};
|
|
|
|
class nsDOMConstructorSH : public nsDOMGenericSH
|
|
{
|
|
protected:
|
|
nsDOMConstructorSH(nsDOMClassInfoData* aData) : nsDOMGenericSH(aData)
|
|
{
|
|
}
|
|
|
|
public:
|
|
NS_IMETHOD PreCreate(nsISupports *nativeObj, JSContext *cx,
|
|
JSObject *globalObj, JSObject **parentObj) MOZ_OVERRIDE;
|
|
NS_IMETHOD PostCreatePrototype(JSContext * cx, JSObject * proto) MOZ_OVERRIDE
|
|
{
|
|
return NS_OK;
|
|
}
|
|
NS_IMETHOD NewResolve(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
|
|
JSObject *obj, jsid id, uint32_t flags,
|
|
JSObject **objp, bool *_retval) MOZ_OVERRIDE;
|
|
NS_IMETHOD Call(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
|
|
JSObject *obj, const JS::CallArgs &args, bool *_retval) MOZ_OVERRIDE;
|
|
|
|
NS_IMETHOD Construct(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
|
|
JSObject *obj, const JS::CallArgs &args, bool *_retval) MOZ_OVERRIDE;
|
|
|
|
NS_IMETHOD HasInstance(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
|
|
JSObject *obj, const jsval &val, bool *bp,
|
|
bool *_retval);
|
|
|
|
static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
|
|
{
|
|
return new nsDOMConstructorSH(aData);
|
|
}
|
|
};
|
|
|
|
class nsNonDOMObjectSH : public nsDOMGenericSH
|
|
{
|
|
protected:
|
|
nsNonDOMObjectSH(nsDOMClassInfoData* aData) : nsDOMGenericSH(aData)
|
|
{
|
|
}
|
|
|
|
virtual ~nsNonDOMObjectSH()
|
|
{
|
|
}
|
|
|
|
public:
|
|
NS_IMETHOD GetFlags(uint32_t *aFlags) MOZ_OVERRIDE;
|
|
|
|
static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
|
|
{
|
|
return new nsNonDOMObjectSH(aData);
|
|
}
|
|
};
|
|
|
|
#endif /* nsDOMClassInfo_h___ */
|