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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.
// A BrowserPluginEmbedder handles messages coming from a BrowserPlugin's
// embedder that are not directed at any particular existing guest process.
// In the beginning, when a BrowserPlugin instance in the embedder renderer
// process requests an initial navigation, the WebContents for that renderer
// renderer creates a BrowserPluginEmbedder for itself. The
// BrowserPluginEmbedder, in turn, forwards the requests to a
// BrowserPluginGuestManager, which creates and manages the lifetime of the new
// guest.
#ifndef CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_H_
#define CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_H_
#include <map>
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_observer.h"
struct BrowserPluginHostMsg_CreateGuest_Params;
struct BrowserPluginHostMsg_ResizeGuest_Params;
namespace gfx {
class Point;
}
namespace content {
class BrowserPluginGuestManager;
class BrowserPluginHostFactory;
class WebContentsImpl;
class CONTENT_EXPORT BrowserPluginEmbedder : public WebContentsObserver {
public:
virtual ~BrowserPluginEmbedder();
static BrowserPluginEmbedder* Create(WebContentsImpl* web_contents);
// Returns the RenderViewHost at a point (|x|, |y|) asynchronously via
// |callback|. We need a roundtrip to renderer process to get this
// information.
void GetRenderViewHostAtPosition(
int x,
int y,
const WebContents::GetRenderViewHostCallback& callback);
// Overrides factory for testing. Default (NULL) value indicates regular
// (non-test) environment.
static void set_factory_for_testing(BrowserPluginHostFactory* factory) {
factory_ = factory;
}
// WebContentsObserver implementation.
virtual void RenderViewGone(base::TerminationStatus status) OVERRIDE;
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
private:
friend class TestBrowserPluginEmbedder;
BrowserPluginEmbedder(WebContentsImpl* web_contents);
void CleanUp();
BrowserPluginGuestManager* GetBrowserPluginGuestManager();
// Message handlers.
void OnAllocateInstanceID(int request_id);
void OnAttach(int instance_id,
const BrowserPluginHostMsg_CreateGuest_Params& params);
void OnCreateGuest(int instance_id,
const BrowserPluginHostMsg_CreateGuest_Params& params);
void OnPluginAtPositionResponse(int instance_id,
int request_id,
const gfx::Point& position);
// Static factory instance (always NULL for non-test).
static BrowserPluginHostFactory* factory_;
// Map that contains outstanding queries to |GetRenderViewHostAtPosition|.
// We need a roundtrip to the renderer process to retrieve the answer,
// so we store these callbacks until we hear back from the renderer.
typedef std::map<int, WebContents::GetRenderViewHostCallback>
GetRenderViewHostCallbackMap;
GetRenderViewHostCallbackMap pending_get_render_view_callbacks_;
// Next request id for BrowserPluginMsg_PluginAtPositionRequest query.
int next_get_render_view_request_id_;
DISALLOW_COPY_AND_ASSIGN(BrowserPluginEmbedder);
};
} // namespace content
#endif // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_H_
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