extensions/browser/extension_host_delegate.h

   1 // Copyright 2014 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 EXTENSIONS_BROWSER_EXTENSION_HOST_DELEGATE_H_
   6 #define EXTENSIONS_BROWSER_EXTENSION_HOST_DELEGATE_H_
   7
   8 #include <string>
   9
  10 #include "content/public/common/media_stream_request.h"
  11 #include "ui/base/window_open_disposition.h"
  12
  13 namespace content {
  14 class JavaScriptDialogManager;
  15 class WebContents;
  16 }
  17
  18 namespace gfx {
  19 class Rect;
  20 }
  21
  22 namespace extensions {
  23 class Extension;
  24 class ExtensionHost;
  25 class ExtensionHostQueue;
  26
  27 // A delegate to support functionality that cannot exist in the extensions
  28 // module. This is not an inner class of ExtensionHost to allow it to be forward
  29 // declared.
  30 class ExtensionHostDelegate {
  31  public:
  32   virtual ~ExtensionHostDelegate() {}
  33
  34   // Called after the hosting |web_contents| for an extension is created. The
  35   // implementation may wish to add preference observers to |web_contents|.
  36   virtual void OnExtensionHostCreated(content::WebContents* web_contents) = 0;
  37
  38   // Called after |host| creates a RenderView for an extension.
  39   virtual void OnRenderViewCreatedForBackgroundPage(ExtensionHost* host) = 0;
  40
  41   // Returns the embedder's JavaScriptDialogManager or NULL if the embedder
  42   // does not support JavaScript dialogs.
  43   virtual content::JavaScriptDialogManager* GetJavaScriptDialogManager() = 0;
  44
  45   // Creates a new tab or popup window with |web_contents|. The embedder may
  46   // choose to do nothing if tabs and popups are not supported.
  47   virtual void CreateTab(content::WebContents* web_contents,
  48                          const std::string& extension_id,
  49                          WindowOpenDisposition disposition,
  50                          const gfx::Rect& initial_rect,
  51                          bool user_gesture) = 0;
  52
  53   // Requests access to an audio or video media stream. Invokes |callback|
  54   // with the response.
  55   virtual void ProcessMediaAccessRequest(
  56       content::WebContents* web_contents,
  57       const content::MediaStreamRequest& request,
  58       const content::MediaResponseCallback& callback,
  59       const Extension* extension) = 0;
  60
  61   // Checks if we have permission to access the microphone or camera. Note that
  62   // this does not query the user. |type| must be MEDIA_DEVICE_AUDIO_CAPTURE
  63   // or MEDIA_DEVICE_VIDEO_CAPTURE.
  64   virtual bool CheckMediaAccessPermission(content::WebContents* web_contents,
  65                                           const GURL& security_origin,
  66                                           content::MediaStreamType type,
  67                                           const Extension* extension) = 0;
  68
  69   // Returns the ExtensionHostQueue implementation to use for creating
  70   // ExtensionHost renderers.
  71   virtual ExtensionHostQueue* GetExtensionHostQueue() const = 0;
  72 };
  73
  74 }  // namespace extensions
  75
  76 #endif  // EXTENSIONS_BROWSER_EXTENSION_HOST_DELEGATE_H_