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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_RENDERER_EXTENSIONS_EXTENSION_HELPER_H_
      6 #define CHROME_RENDERER_EXTENSIONS_EXTENSION_HELPER_H_
      7 
      8 #include <map>
      9 #include <vector>
     10 
     11 #include "base/memory/linked_ptr.h"
     12 #include "base/memory/scoped_ptr.h"
     13 #include "content/public/common/console_message_level.h"
     14 #include "content/public/renderer/render_view_observer.h"
     15 #include "content/public/renderer/render_view_observer_tracker.h"
     16 #include "extensions/common/view_type.h"
     17 #include "third_party/WebKit/public/platform/WebURLResponse.h"
     18 
     19 class GURL;
     20 class SkBitmap;
     21 struct ExtensionMsg_ExecuteCode_Params;
     22 struct ExtensionMsg_ExternalConnectionInfo;
     23 struct WebApplicationInfo;
     24 
     25 namespace base {
     26 class DictionaryValue;
     27 class ListValue;
     28 }
     29 
     30 namespace extensions {
     31 class Dispatcher;
     32 struct Message;
     33 
     34 // RenderView-level plumbing for extension features.
     35 class ExtensionHelper
     36     : public content::RenderViewObserver,
     37       public content::RenderViewObserverTracker<ExtensionHelper> {
     38  public:
     39   // Returns a list of extension RenderViews that match the given filter
     40   // criteria. If |browser_window_id| is not extension_misc::kUnknownWindowId,
     41   // the list is restricted to views in that browser window.
     42   static std::vector<content::RenderView*> GetExtensionViews(
     43       const std::string& extension_id,
     44       int browser_window_id,
     45       ViewType view_type);
     46 
     47   // Returns the given extension's background page, or NULL if none.
     48   static content::RenderView* GetBackgroundPage(
     49       const std::string& extension_id);
     50 
     51   ExtensionHelper(content::RenderView* render_view, Dispatcher* dispatcher);
     52   virtual ~ExtensionHelper();
     53 
     54   int tab_id() const { return tab_id_; }
     55   int browser_window_id() const { return browser_window_id_; }
     56   ViewType view_type() const { return view_type_; }
     57   Dispatcher* dispatcher() const { return dispatcher_; }
     58 
     59  private:
     60   // RenderViewObserver implementation.
     61   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
     62   virtual void DidFinishDocumentLoad(blink::WebFrame* frame) OVERRIDE;
     63   virtual void DidFinishLoad(blink::WebFrame* frame) OVERRIDE;
     64   virtual void DidCreateDocumentElement(blink::WebFrame* frame) OVERRIDE;
     65   virtual void DidStartProvisionalLoad(blink::WebFrame* frame) OVERRIDE;
     66   virtual void FrameDetached(blink::WebFrame* frame) OVERRIDE;
     67   virtual void DidMatchCSS(
     68       blink::WebFrame* frame,
     69       const blink::WebVector<blink::WebString>& newly_matching_selectors,
     70       const blink::WebVector<blink::WebString>& stopped_matching_selectors)
     71       OVERRIDE;
     72   virtual void DidCreateDataSource(blink::WebFrame* frame,
     73                                    blink::WebDataSource* ds) OVERRIDE;
     74   virtual void DraggableRegionsChanged(blink::WebFrame* frame) OVERRIDE;
     75 
     76   void OnExtensionResponse(int request_id, bool success,
     77                            const base::ListValue& response,
     78                            const std::string& error);
     79   void OnExtensionMessageInvoke(const std::string& extension_id,
     80                                 const std::string& module_name,
     81                                 const std::string& function_name,
     82                                 const base::ListValue& args,
     83                                 bool user_gesture);
     84   void OnExtensionDispatchOnConnect(
     85       int target_port_id,
     86       const std::string& channel_name,
     87       const base::DictionaryValue& source_tab,
     88       const ExtensionMsg_ExternalConnectionInfo& info,
     89       const std::string& tls_channel_id);
     90   void OnExtensionDeliverMessage(int target_port_id,
     91                                  const Message& message);
     92   void OnExtensionDispatchOnDisconnect(int port_id,
     93                                        const std::string& error_message);
     94   void OnExecuteCode(const ExtensionMsg_ExecuteCode_Params& params);
     95   void OnGetApplicationInfo(int page_id);
     96   void OnNotifyRendererViewType(ViewType view_type);
     97   void OnSetTabId(int tab_id);
     98   void OnUpdateBrowserWindowId(int window_id);
     99   void OnAddMessageToConsole(content::ConsoleMessageLevel level,
    100                              const std::string& message);
    101   void OnAppWindowClosed();
    102 
    103   Dispatcher* dispatcher_;
    104 
    105   // The app info that we are processing. This is used when installing an app
    106   // via application definition. The in-progress web app is stored here while
    107   // its manifest and icons are downloaded.
    108   scoped_ptr<WebApplicationInfo> pending_app_info_;
    109 
    110   // The number of app icon requests outstanding. When this reaches zero, we're
    111   // done processing an app definition file.
    112   int pending_app_icon_requests_;
    113 
    114   // Type of view attached with RenderView.
    115   ViewType view_type_;
    116 
    117   // Id of the tab which the RenderView is attached to.
    118   int tab_id_;
    119 
    120   // Id number of browser window which RenderView is attached to.
    121   int browser_window_id_;
    122 
    123   DISALLOW_COPY_AND_ASSIGN(ExtensionHelper);
    124 };
    125 
    126 }  // namespace extensions
    127 
    128 #endif  // CHROME_RENDERER_EXTENSIONS_EXTENSION_HELPER_H_
    129