Move renderer plugin code into a new component (re-land)

chrome/renderer/plugins/webview_plugin.h

-// 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 CHROME_RENDERER_PLUGINS_WEBVIEW_PLUGIN_H_
-#define CHROME_RENDERER_PLUGINS_WEBVIEW_PLUGIN_H_
-
-#include <list>
-
-#include "base/memory/scoped_ptr.h"
-#include "base/sequenced_task_runner_helpers.h"
-#include "third_party/WebKit/public/platform/WebString.h"
-#include "third_party/WebKit/public/platform/WebURLResponse.h"
-#include "third_party/WebKit/public/web/WebCursorInfo.h"
-#include "third_party/WebKit/public/web/WebFrameClient.h"
-#include "third_party/WebKit/public/web/WebPlugin.h"
-#include "third_party/WebKit/public/web/WebViewClient.h"
-
-struct WebPreferences;
-
-namespace WebKit {
-class WebMouseEvent;
-}
-
-// This class implements the WebPlugin interface by forwarding drawing and
-// handling input events to a WebView.
-// It can be used as a placeholder for an actual plugin, using HTML for the UI.
-// To show HTML data inside the WebViewPlugin,
-// call web_view->mainFrame()->loadHTMLString() with the HTML data and a fake
-// chrome:// URL as origin.
-
-class WebViewPlugin : public WebKit::WebPlugin,
-                      public WebKit::WebViewClient,
-                      public WebKit::WebFrameClient {
- public:
-  class Delegate {
-   public:
-    // Bind |frame| to a Javascript object, enabling the delegate to receive
-    // callback methods from Javascript inside the WebFrame.
-    // This method is called from WebFrameClient::didClearWindowObject.
-    virtual void BindWebFrame(WebKit::WebFrame* frame) = 0;
-
-    // Called before the WebViewPlugin is destroyed. The delegate should delete
-    // itself here.
-    virtual void WillDestroyPlugin() = 0;
-
-    // Called upon a context menu event.
-    virtual void ShowContextMenu(const WebKit::WebMouseEvent&) = 0;
-  };
-
-  explicit WebViewPlugin(Delegate* delegate);
-
-  // Convenience method to set up a new WebViewPlugin using |preferences|
-  // and displaying |html_data|. |url| should be a (fake) chrome:// URL; it is
-  // only used for navigation and never actually resolved.
-  static WebViewPlugin* Create(
-      Delegate* delegate,
-      const WebPreferences& preferences,
-      const std::string& html_data,
-      const GURL& url);
-
-  WebKit::WebView* web_view() { return web_view_; }
-
-  // When loading a plug-in document (i.e. a full page plug-in not embedded in
-  // another page), we save all data that has been received, and replay it with
-  // this method on the actual plug-in.
-  void ReplayReceivedData(WebKit::WebPlugin* plugin);
-
-  void RestoreTitleText();
-
-  // WebPlugin methods:
-  virtual WebKit::WebPluginContainer* container() const;
-  virtual bool initialize(WebKit::WebPluginContainer*);
-  virtual void destroy();
-
-  virtual NPObject* scriptableObject();
-  virtual struct _NPP* pluginNPP();
-
-  virtual bool getFormValue(WebKit::WebString& value);
-
-  virtual void paint(WebKit::WebCanvas* canvas, const WebKit::WebRect& rect);
-
-  // Coordinates are relative to the containing window.
-  virtual void updateGeometry(
-      const WebKit::WebRect& frame_rect, const WebKit::WebRect& clip_rect,
-      const WebKit::WebVector<WebKit::WebRect>& cut_out_rects, bool is_visible);
-
-  virtual void updateFocus(bool) {}
-  virtual void updateVisibility(bool) {}
-
-  virtual bool acceptsInputEvents();
-  virtual bool handleInputEvent(const WebKit::WebInputEvent& event,
-                                WebKit::WebCursorInfo& cursor_info);
-
-  virtual void didReceiveResponse(const WebKit::WebURLResponse& response);
-  virtual void didReceiveData(const char* data, int data_length);
-  virtual void didFinishLoading();
-  virtual void didFailLoading(const WebKit::WebURLError& error);
-
-  // Called in response to WebPluginContainer::loadFrameRequest
-  virtual void didFinishLoadingFrameRequest(
-      const WebKit::WebURL& url, void* notifyData) {}
-  virtual void didFailLoadingFrameRequest(const WebKit::WebURL& url,
-                                          void* notify_data,
-                                          const WebKit::WebURLError& error) {}
-
-  // WebViewClient methods:
-  virtual bool acceptsLoadDrops();
-
-  virtual void setToolTipText(const WebKit::WebString&,
-                              WebKit::WebTextDirection);
-
-  virtual void startDragging(WebKit::WebFrame* frame,
-                             const WebKit::WebDragData& drag_data,
-                             WebKit::WebDragOperationsMask mask,
-                             const WebKit::WebImage& image,
-                             const WebKit::WebPoint& point);
-
-  // WebWidgetClient methods:
-  virtual void didInvalidateRect(const WebKit::WebRect&);
-  virtual void didChangeCursor(const WebKit::WebCursorInfo& cursor);
-
-  // WebFrameClient methods:
-  virtual void didClearWindowObject(WebKit::WebFrame* frame);
-
-  // This method is defined in WebPlugin as well as in WebFrameClient, but with
-  // different parameters. We only care about implementing the WebPlugin
-  // version, so we implement this method and call the default in WebFrameClient
-  // (which does nothing) to correctly overload it.
-  virtual void didReceiveResponse(WebKit::WebFrame* frame,
-                                  unsigned identifier,
-                                  const WebKit::WebURLResponse& response);
-
- private:
-  friend class base::DeleteHelper<WebViewPlugin>;
-  virtual ~WebViewPlugin();
-
-  Delegate* delegate_;
-  // Destroys itself.
-  WebKit::WebCursorInfo current_cursor_;
-  // Owns us.
-  WebKit::WebPluginContainer* container_;
-  // Owned by us, deleted via |close()|.
-  WebKit::WebView* web_view_;
-  gfx::Rect rect_;
-
-  WebKit::WebURLResponse response_;
-  std::list<std::string> data_;
-  bool finished_loading_;
-  scoped_ptr<WebKit::WebURLError> error_;
-  WebKit::WebString old_title_;
-};
-
-#endif  // CHROME_RENDERER_PLUGINS_WEBVIEW_PLUGIN_H_