src/third_party/WebKit/Source/bindings/core/v8/ScriptPromisePropertyBase.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef ScriptPromisePropertyBase_h
   6 #define ScriptPromisePropertyBase_h
   7
   8 #include "bindings/core/v8/ScopedPersistent.h"
   9 #include "bindings/core/v8/ScriptPromise.h"
  10 #include "bindings/core/v8/ScriptPromiseProperties.h"
  11 #include "core/dom/ContextLifecycleObserver.h"
  12 #include "wtf/OwnPtr.h"
  13 #include "wtf/RefCounted.h"
  14 #include "wtf/Vector.h"
  15 #include <v8.h>
  16
  17 namespace blink {
  18
  19 class DOMWrapperWorld;
  20 class ExecutionContext;
  21 class ScriptState;
  22
  23 class ScriptPromisePropertyBase : public GarbageCollectedFinalized<ScriptPromisePropertyBase>, public ContextLifecycleObserver {
  24 public:
  25     virtual ~ScriptPromisePropertyBase();
  26
  27     enum Name {
  28 #define P(Name) Name,
  29         SCRIPT_PROMISE_PROPERTIES(P)
  30 #undef P
  31     };
  32
  33     enum State {
  34         Pending,
  35         Resolved,
  36         Rejected,
  37     };
  38     State state() const { return m_state; }
  39
  40     ScriptPromise promise(DOMWrapperWorld&);
  41
  42     virtual void trace(Visitor*) { }
  43
  44 protected:
  45     ScriptPromisePropertyBase(ExecutionContext*, Name);
  46
  47     void resolveOrReject(State targetState);
  48
  49     // ScriptPromiseProperty overrides these to wrap the holder,
  50     // rejected value and resolved value. The
  51     // ScriptPromisePropertyBase caller will enter the V8Context for
  52     // the property's execution context and the world it is
  53     // creating/settling promises in; the implementation should use
  54     // this context.
  55     virtual v8::Handle<v8::Object> holder(v8::Handle<v8::Object> creationContext, v8::Isolate*) = 0;
  56     virtual v8::Handle<v8::Value> resolvedValue(v8::Isolate*, v8::Handle<v8::Object> creationContext) = 0;
  57     virtual v8::Handle<v8::Value> rejectedValue(v8::Isolate*, v8::Handle<v8::Object> creationContext) = 0;
  58
  59     void resetBase();
  60
  61 private:
  62     typedef Vector<OwnPtr<ScopedPersistent<v8::Object> > > WeakPersistentSet;
  63
  64     void resolveOrRejectInternal(v8::Handle<v8::Promise::Resolver>);
  65     v8::Local<v8::Object> ensureHolderWrapper(ScriptState*);
  66     void clearWrappers();
  67
  68     v8::Handle<v8::String> promiseName();
  69     v8::Handle<v8::String> resolverName();
  70
  71     v8::Isolate* m_isolate;
  72     Name m_name;
  73     State m_state;
  74
  75     WeakPersistentSet m_wrappers;
  76 };
  77
  78 } // namespace blink
  79
  80 #endif // ScriptPromisePropertyBase_h