1 files changed, 296 insertions, 0 deletions
diff --git a/dom/base/nsDOMClassInfo.h b/dom/base/nsDOMClassInfo.h
new file mode 100644
index 000000000..68891da1f
--- /dev/null
+++ b/dom/base/nsDOMClassInfo.h
@@ -0,0 +1,296 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 nsDOMClassInfo_h___
+#define nsDOMClassInfo_h___
+
+#include "mozilla/Attributes.h"
+#include "nsDOMClassInfoID.h"
+#include "nsIXPCScriptable.h"
+#include "nsIScriptGlobalObject.h"
+#include "js/Class.h"
+#include "js/Id.h"
+#include "nsIXPConnect.h"
+
+#ifdef XP_WIN
+#undef GetClassName
+#endif
+
+struct nsGlobalNameStruct;
+class nsGlobalWindow;
+
+struct nsDOMClassInfoData;
+
+typedef nsIClassInfo* (*nsDOMClassInfoConstructorFnc)
+  (nsDOMClassInfoData* aData);
+
+typedef nsresult (*nsDOMConstructorFunc)(nsISupports** aNewObject);
+
+struct nsDOMClassInfoData
+{
+  // XXX: mName is the same as the name gettable from the callback. This
+  // redundancy should be removed eventually.
+  const char *mName;
+  const char16_t *mNameUTF16;
+  const js::ClassOps mClassOps;
+  const js::Class mClass;
+  nsDOMClassInfoConstructorFnc mConstructorFptr;
+
+  nsIClassInfo *mCachedClassInfo;
+  const nsIID *mProtoChainInterface;
+  const nsIID **mInterfaces;
+  uint32_t mScriptableFlags : 31; // flags must not use more than 31 bits!
+  uint32_t mHasClassInterface : 1;
+  bool mChromeOnly : 1;
+  bool mAllowXBL : 1;
+  bool mDisabled : 1;
+#ifdef DEBUG
+  uint32_t mDebugID;
+#endif
+};
+
+class nsWindowSH;
+
+class nsDOMClassInfo : public nsXPCClassInfo
+{
+  friend class nsWindowSH;
+
+protected:
+  virtual ~nsDOMClassInfo() {};
+
+public:
+  explicit nsDOMClassInfo(nsDOMClassInfoData* aData);
+
+  NS_DECL_NSIXPCSCRIPTABLE
+
+  NS_DECL_ISUPPORTS
+
+  NS_DECL_NSICLASSINFO
+
+  static nsresult Init();
+  static void ShutDown();
+
+  static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
+  {
+    return new nsDOMClassInfo(aData);
+  }
+
+  /*
+   * The following two functions exist because of the way that Xray wrappers
+   * work. In order to allow scriptable helpers to define non-IDL defined but
+   * still "safe" properties for Xray wrappers, we call into the scriptable
+   * helper with |obj| being the wrapper.
+   *
+   * Ideally, that would be the end of the story, however due to complications
+   * dealing with document.domain, it's possible to end up in a scriptable
+   * helper with a wrapper, even though we should be treating the lookup as a
+   * transparent one.
+   *
+   * Note: So ObjectIsNativeWrapper(cx, obj) check usually means "through xray
+   * wrapper this part is not visible".
+   */
+  static bool ObjectIsNativeWrapper(JSContext* cx, JSObject* obj);
+
+  static nsISupports *GetNative(nsIXPConnectWrappedNative *wrapper, JSObject *obj);
+
+  static nsIXPConnect *XPConnect()
+  {
+    return sXPConnect;
+  }
+
+protected:
+  friend nsIClassInfo* NS_GetDOMClassInfoInstance(nsDOMClassInfoID aID);
+
+  const nsDOMClassInfoData* mData;
+
+  virtual void PreserveWrapper(nsISupports *aNative) override
+  {
+  }
+
+  static nsresult RegisterClassProtos(int32_t aDOMClassInfoID);
+
+  static nsIXPConnect *sXPConnect;
+
+  // nsIXPCScriptable code
+  static nsresult DefineStaticJSVals();
+
+  static bool sIsInitialized;
+
+public:
+  static jsid sConstructor_id;
+  static jsid sWrappedJSObject_id;
+};
+
+// THIS ONE ISN'T SAFE!! It assumes that the private of the JSObject is
+// an nsISupports.
+inline
+const nsQueryInterface
+do_QueryWrappedNative(nsIXPConnectWrappedNative *wrapper, JSObject *obj)
+{
+  return nsQueryInterface(nsDOMClassInfo::GetNative(wrapper, obj));
+}
+
+// THIS ONE ISN'T SAFE!! It assumes that the private of the JSObject is
+// an nsISupports.
+inline
+const nsQueryInterfaceWithError
+do_QueryWrappedNative(nsIXPConnectWrappedNative *wrapper, JSObject *obj,
+                      nsresult *aError)
+
+{
+  return nsQueryInterfaceWithError(nsDOMClassInfo::GetNative(wrapper, obj),
+                                   aError);
+}
+
+typedef nsDOMClassInfo nsDOMGenericSH;
+
+// Makes sure that the wrapper is preserved if new properties are added.
+class nsEventTargetSH : public nsDOMGenericSH
+{
+protected:
+  explicit nsEventTargetSH(nsDOMClassInfoData* aData) : nsDOMGenericSH(aData)
+  {
+  }
+
+  virtual ~nsEventTargetSH()
+  {
+  }
+public:
+  NS_IMETHOD PreCreate(nsISupports *nativeObj, JSContext *cx,
+                       JSObject *globalObj, JSObject **parentObj) override;
+  NS_IMETHOD AddProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
+                         JSObject *obj, jsid id, JS::Handle<JS::Value> val,
+                         bool *_retval) override;
+
+  virtual void PreserveWrapper(nsISupports *aNative) override;
+
+  static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
+  {
+    return new nsEventTargetSH(aData);
+  }
+};
+
+// A place to hang some static methods that we should really consider
+// moving to be nsGlobalWindow member methods.  See bug 1062418.
+class nsWindowSH
+{
+protected:
+  static nsresult GlobalResolve(nsGlobalWindow *aWin, JSContext *cx,
+                                JS::Handle<JSObject*> obj, JS::Handle<jsid> id,
+                                JS::MutableHandle<JS::PropertyDescriptor> desc);
+
+  friend class nsGlobalWindow;
+public:
+  static bool NameStructEnabled(JSContext* aCx, nsGlobalWindow *aWin,
+                                const nsAString& aName,
+                                const nsGlobalNameStruct& aNameStruct);
+};
+
+
+// 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
+{
+  virtual ~nsEventListenerThisTranslator()
+  {
+  }
+
+public:
+  nsEventListenerThisTranslator()
+  {
+  }
+
+  // nsISupports
+  NS_DECL_ISUPPORTS
+
+  // nsIXPCFunctionThisTranslator
+  NS_DECL_NSIXPCFUNCTIONTHISTRANSLATOR
+};
+
+class nsDOMConstructorSH : public nsDOMGenericSH
+{
+protected:
+  explicit nsDOMConstructorSH(nsDOMClassInfoData* aData) : nsDOMGenericSH(aData)
+  {
+  }
+
+public:
+  NS_IMETHOD PreCreate(nsISupports *nativeObj, JSContext *cx,
+                       JSObject *globalObj, JSObject **parentObj) override;
+  NS_IMETHOD PostCreatePrototype(JSContext * cx, JSObject * proto) override
+  {
+    return NS_OK;
+  }
+  NS_IMETHOD Resolve(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
+                     JSObject *obj, jsid id, bool *resolvedp,
+                     bool *_retval) override;
+  NS_IMETHOD Call(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
+                  JSObject *obj, const JS::CallArgs &args, bool *_retval) override;
+
+  NS_IMETHOD Construct(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
+                       JSObject *obj, const JS::CallArgs &args, bool *_retval) override;
+
+  NS_IMETHOD HasInstance(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
+                         JSObject *obj, JS::Handle<JS::Value> val, bool *bp,
+                         bool *_retval) override;
+
+  static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
+  {
+    return new nsDOMConstructorSH(aData);
+  }
+};
+
+class nsNonDOMObjectSH : public nsDOMGenericSH
+{
+protected:
+  explicit nsNonDOMObjectSH(nsDOMClassInfoData* aData) : nsDOMGenericSH(aData)
+  {
+  }
+
+  virtual ~nsNonDOMObjectSH()
+  {
+  }
+
+public:
+  NS_IMETHOD GetFlags(uint32_t *aFlags) override;
+
+  static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
+  {
+    return new nsNonDOMObjectSH(aData);
+  }
+};
+
+template<typename Super>
+class nsMessageManagerSH : public Super
+{
+protected:
+  explicit nsMessageManagerSH(nsDOMClassInfoData* aData)
+    : Super(aData)
+  {
+  }
+
+  virtual ~nsMessageManagerSH()
+  {
+  }
+public:
+  NS_IMETHOD Resolve(nsIXPConnectWrappedNative* wrapper, JSContext* cx,
+                     JSObject* obj_, jsid id_, bool* resolvedp,
+                     bool* _retval) override;
+  NS_IMETHOD Enumerate(nsIXPConnectWrappedNative* wrapper, JSContext* cx,
+                       JSObject* obj_, bool* _retval) override;
+
+  static nsIClassInfo *doCreate(nsDOMClassInfoData* aData)
+  {
+    return new nsMessageManagerSH(aData);
+  }
+};
+
+#endif /* nsDOMClassInfo_h___ */