2 * Copyright (C) 2013 Google Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #ifndef ScriptPromise_h
32 #define ScriptPromise_h
34 #include "bindings/v8/ScriptFunction.h"
35 #include "bindings/v8/ScriptValue.h"
36 #include "wtf/PassOwnPtr.h"
41 class ExecutionContext;
43 // ScriptPromise is the class for representing Promise values in C++ world.
44 // ScriptPromise holds a Promise.
45 // So holding a ScriptPromise as a member variable in DOM object causes
46 // memory leaks since it has a reference from C++ to V8.
50 // Constructs an empty promise.
53 // Constructs a ScriptPromise from |promise|.
54 // If |promise| is not a Promise object, throws a v8 TypeError.
55 ScriptPromise(ScriptState*, v8::Handle<v8::Value> promise);
57 ScriptPromise then(PassOwnPtr<ScriptFunction> onFulfilled, PassOwnPtr<ScriptFunction> onRejected = PassOwnPtr<ScriptFunction>());
61 return m_promise.isObject();
66 return m_promise.isNull();
69 bool isUndefinedOrNull() const
71 return m_promise.isUndefined() || m_promise.isNull();
74 v8::Handle<v8::Value> v8Value() const
76 return m_promise.v8Value();
79 v8::Isolate* isolate() const
81 return m_promise.isolate();
86 return m_promise.isEmpty();
94 // Constructs and returns a ScriptPromise from |value|.
95 // if |value| is not a Promise object, returns a Promise object
96 // resolved with |value|.
97 static ScriptPromise cast(const ScriptValue& /*value*/);
100 RefPtr<ScriptState> m_scriptState;
101 ScriptValue m_promise;
104 } // namespace WebCore
107 #endif // ScriptPromise_h