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// Copyright (c) 2012 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 CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_HELPER_H_
#define CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_HELPER_H_
#include "content/public/browser/render_view_host_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebDragOperation.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
class WebCursor;
struct ViewHostMsg_UpdateRect_Params;
namespace gfx {
class Size;
}
namespace content {
class BrowserPluginGuest;
class RenderViewHost;
// Helper for browser plugin guest.
//
// It overrides different WebContents messages that require special treatment
// for a WebContents to act as a guest. All functionality is handled by its
// delegate. This class exists so we have separation of messages requiring
// special handling, which can be moved to a message filter (IPC thread) for
// future optimization.
//
// The lifetime of this class is managed by the associated RenderViewHost. A
// BrowserPluginGuestHelper is created whenever a BrowserPluginGuest is created.
class BrowserPluginGuestHelper : public RenderViewHostObserver {
public:
BrowserPluginGuestHelper(BrowserPluginGuest* guest,
RenderViewHost* render_view_host);
virtual ~BrowserPluginGuestHelper();
protected:
// RenderViewHostObserver implementation.
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
private:
// Message handlers
void OnUpdateDragCursor(WebKit::WebDragOperation current_op);
void OnUpdateRect(const ViewHostMsg_UpdateRect_Params& params);
void OnHandleInputEventAck(WebKit::WebInputEvent::Type event_type,
bool processed);
void OnTakeFocus(bool reverse);
void OnShowWidget(int route_id, const gfx::Rect& initial_pos);
void OnMsgHasTouchEventHandlers(bool has_handlers);
void OnSetCursor(const WebCursor& cursor);
BrowserPluginGuest* guest_;
// A scoped container for notification registries.
NotificationRegistrar registrar_;
DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuestHelper);
};
} // namespace content
#endif // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_HELPER_H_
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