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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_RENDERER_GUEST_VIEW_EXTENSIONS_GUEST_VIEW_CONTAINER_H_
#define EXTENSIONS_RENDERER_GUEST_VIEW_EXTENSIONS_GUEST_VIEW_CONTAINER_H_
#include <queue>
#include "base/memory/linked_ptr.h"
#include "base/memory/scoped_ptr.h"
#include "base/values.h"
#include "extensions/renderer/guest_view/guest_view_container.h"
#include "v8/include/v8.h"
namespace gfx {
class Size;
}
namespace extensions {
class ExtensionsGuestViewContainer : public GuestViewContainer {
public:
class Request {
public:
Request(GuestViewContainer* container,
v8::Local<v8::Function> callback,
v8::Isolate* isolate);
virtual ~Request();
virtual void PerformRequest() = 0;
virtual void HandleResponse(const IPC::Message& message) = 0;
void ExecuteCallbackIfAvailable(int argc,
scoped_ptr<v8::Local<v8::Value>[]> argv);
GuestViewContainer* container() const { return container_; }
bool HasCallback() const;
v8::Local<v8::Function> GetCallback() const;
v8::Isolate* isolate() const { return isolate_; }
private:
GuestViewContainer* container_;
v8::Global<v8::Function> callback_;
v8::Isolate* const isolate_;
};
// This class represents an AttachGuest request from Javascript. It includes
// the input parameters and the callback function. The Attach operation may
// not execute immediately, if the container is not ready or if there are
// other attach operations in flight.
class AttachRequest : public Request {
public:
AttachRequest(GuestViewContainer* container,
int guest_instance_id,
scoped_ptr<base::DictionaryValue> params,
v8::Local<v8::Function> callback,
v8::Isolate* isolate);
~AttachRequest() override;
void PerformRequest() override;
void HandleResponse(const IPC::Message& message) override;
private:
const int guest_instance_id_;
scoped_ptr<base::DictionaryValue> params_;
};
class DetachRequest : public Request {
public:
DetachRequest(GuestViewContainer* container,
v8::Local<v8::Function> callback,
v8::Isolate* isolate);
~DetachRequest() override;
void PerformRequest() override;
void HandleResponse(const IPC::Message& message) override;
};
explicit ExtensionsGuestViewContainer(content::RenderFrame* render_frame);
~ExtensionsGuestViewContainer() override;
static ExtensionsGuestViewContainer* FromID(int element_instance_id);
void IssueRequest(linked_ptr<Request> request);
void RegisterDestructionCallback(v8::Local<v8::Function> callback,
v8::Isolate* isolate);
void RegisterElementResizeCallback(v8::Local<v8::Function> callback,
v8::Isolate* isolate);
// BrowserPluginDelegate implementation.
bool OnMessageReceived(const IPC::Message& message) override;
void SetElementInstanceID(int element_instance_id) override;
void Ready() override;
void DidResizeElement(const gfx::Size& old_size,
const gfx::Size& new_size) override;
private:
void OnHandleCallback(const IPC::Message& message);
void CallElementResizeCallback(const gfx::Size& old_size,
const gfx::Size& new_size);
void EnqueueRequest(linked_ptr<Request> request);
void PerformPendingRequest();
void HandlePendingResponseCallback(const IPC::Message& message);
bool ready_;
std::deque<linked_ptr<Request> > pending_requests_;
linked_ptr<Request> pending_response_;
v8::Global<v8::Function> destruction_callback_;
v8::Isolate* destruction_isolate_;
v8::Global<v8::Function> element_resize_callback_;
v8::Isolate* element_resize_isolate_;
// Weak pointer factory used for calling the element resize callback.
base::WeakPtrFactory<ExtensionsGuestViewContainer> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(ExtensionsGuestViewContainer);
};
} // namespace extensions
#endif // EXTENSIONS_RENDERER_GUEST_VIEW_EXTENSIONS_GUEST_VIEW_CONTAINER_H_
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