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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ScriptPromise_h
#define ScriptPromise_h
#include "bindings/core/v8/ScriptFunction.h"
#include "bindings/core/v8/ScriptValue.h"
#include "platform/heap/Handle.h"
#include "wtf/PassRefPtr.h"
#include <v8.h>
namespace blink {
class DOMException;
// ScriptPromise is the class for representing Promise values in C++ world.
// ScriptPromise holds a Promise.
// So holding a ScriptPromise as a member variable in DOM object causes
// memory leaks since it has a reference from C++ to V8.
//
class ScriptPromise final {
public:
// Constructs an empty promise.
ScriptPromise() { }
// Constructs a ScriptPromise from |promise|.
// If |promise| is not a Promise object, throws a v8 TypeError.
ScriptPromise(ScriptState*, v8::Handle<v8::Value> promise);
ScriptPromise then(v8::Handle<v8::Function> onFulfilled, v8::Handle<v8::Function> onRejected = v8::Handle<v8::Function>());
bool isObject() const
{
return m_promise.isObject();
}
bool isNull() const
{
return m_promise.isNull();
}
bool isUndefinedOrNull() const
{
return m_promise.isUndefined() || m_promise.isNull();
}
v8::Handle<v8::Value> v8Value() const
{
return m_promise.v8Value();
}
v8::Isolate* isolate() const
{
return m_promise.isolate();
}
bool isEmpty() const
{
return m_promise.isEmpty();
}
void clear()
{
m_promise.clear();
}
bool operator==(const ScriptPromise& value) const
{
return m_promise == value.m_promise;
}
bool operator!=(const ScriptPromise& value) const
{
return !operator==(value);
}
// Constructs and returns a ScriptPromise from |value|.
// if |value| is not a Promise object, returns a Promise object
// resolved with |value|.
// Returns |value| itself if it is a Promise.
static ScriptPromise cast(ScriptState*, const ScriptValue& /*value*/);
static ScriptPromise cast(ScriptState*, v8::Handle<v8::Value> /*value*/);
static ScriptPromise reject(ScriptState*, const ScriptValue&);
static ScriptPromise reject(ScriptState*, v8::Handle<v8::Value>);
static ScriptPromise rejectWithDOMException(ScriptState*, PassRefPtrWillBeRawPtr<DOMException>);
static v8::Local<v8::Promise> rejectRaw(v8::Isolate*, v8::Handle<v8::Value>);
// This is a utility class intended to be used internally.
// ScriptPromiseResolver is for general purpose.
class InternalResolver final {
public:
explicit InternalResolver(ScriptState*);
v8::Local<v8::Promise> v8Promise() const;
ScriptPromise promise() const;
void resolve(v8::Local<v8::Value>);
void reject(v8::Local<v8::Value>);
void clear() { m_resolver.clear(); }
private:
ScriptValue m_resolver;
};
private:
RefPtr<ScriptState> m_scriptState;
ScriptValue m_promise;
};
} // namespace blink
#endif // ScriptPromise_h
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