js/ipc/ContextWrapperParent.h

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  40
  41 #ifndef mozilla_jsipc_ContextWrapperParent_h__
  42 #define mozilla_jsipc_ContextWrapperParent_h__
  43
  44 #include "mozilla/jsipc/PContextWrapperParent.h"
  45 #include "mozilla/jsipc/ObjectWrapperParent.h"
  46 #include "mozilla/jsipc/CPOWTypes.h"
  47
  48 #include "mozilla/dom/ContentParent.h"
  49
  50 #include "jsapi.h"
  51 #include "nsAutoJSValHolder.h"
  52
  53 namespace mozilla {
  54 namespace jsipc {
  55
  56 using mozilla::dom::ContentParent;
  57
  58 class ContextWrapperParent
  59     : public PContextWrapperParent
  60 {
  61 public:
  62
  63     ContextWrapperParent(ContentParent* cpp)
  64         : mContent(cpp)
  65         , mGlobal(NULL)
  66     {}
  67
  68     JSBool GetGlobalJSObject(JSContext* cx, JSObject** globalp) {
  69         if (!mGlobal)
  70             return JS_FALSE;
  71         mGlobalHolder.Hold(cx);
  72         mGlobalHolder = *globalp = mGlobal->GetJSObject(cx);
  73         return JS_TRUE;
  74     }
  75
  76     ObjectWrapperParent* GetGlobalObjectWrapper() const {
  77         return mGlobal;
  78     }
  79
  80     bool RequestRunToCompletion() {
  81         return mContent->RequestRunToCompletion();
  82     }
  83
  84 private:
  85
  86     ContentParent* mContent;
  87     ObjectWrapperParent* mGlobal;
  88     nsAutoJSValHolder mGlobalHolder;
  89
  90     PObjectWrapperParent* AllocPObjectWrapper(const bool&) {
  91         return new ObjectWrapperParent();
  92     }
  93
  94     bool RecvPObjectWrapperConstructor(PObjectWrapperParent* actor,
  95                                        const bool& makeGlobal)
  96     {
  97         if (makeGlobal) {
  98             mGlobalHolder.Release();
  99             mGlobal = static_cast<ObjectWrapperParent*>(actor);
 100         }
 101         return true;
 102     }
 103
 104     bool DeallocPObjectWrapper(PObjectWrapperParent* actor)
 105     {
 106         if (mGlobal &&
 107             mGlobal == static_cast<ObjectWrapperParent*>(actor)) {
 108             mGlobalHolder.Release();
 109             mGlobal = NULL;
 110         }
 111         delete actor;
 112         return true;
 113     }
 114
 115 };
 116
 117 }}
 118
 119 #endif