components/web_view/frame_connection.h

   1 // Copyright 2015 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 COMPONENTS_WEB_VIEW_FRAME_CONNECTION_H_
   6 #define COMPONENTS_WEB_VIEW_FRAME_CONNECTION_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/callback.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "components/mus/public/interfaces/view_tree.mojom.h"
  12 #include "components/web_view/frame_tree_delegate.h"
  13 #include "components/web_view/frame_user_data.h"
  14 #include "components/web_view/public/interfaces/frame.mojom.h"
  15 #include "mojo/services/network/public/interfaces/url_loader.mojom.h"
  16
  17 namespace mojo {
  18 class ApplicationConnection;
  19 class ApplicationImpl;
  20 }
  21
  22 namespace web_view {
  23
  24 class Frame;
  25
  26 // FrameConnection is a FrameUserData that manages the connection to a
  27 // particular frame. It is also responsible for obtaining the necessary
  28 // services from the remote side.
  29 class FrameConnection : public FrameUserData {
  30  public:
  31   FrameConnection();
  32   ~FrameConnection() override;
  33
  34   // Creates a FrameConnection to service a call from
  35   // FrameTreeDelegate::CanNavigateFrame(). |callback| is run once the
  36   // content handler id for the app is determined.
  37   static void CreateConnectionForCanNavigateFrame(
  38       mojo::ApplicationImpl* app,
  39       Frame* frame,
  40       mojo::URLRequestPtr request,
  41       const FrameTreeDelegate::CanNavigateFrameCallback& callback);
  42
  43   // Initializes the FrameConnection with the specified parameters.
  44   // |on_got_id_callback| is run once the content handler is obtained from
  45   // the connection.
  46   void Init(mojo::ApplicationImpl* app,
  47             mojo::URLRequestPtr request,
  48             const base::Closure& on_got_id_callback);
  49
  50   mojom::FrameClient* frame_client() { return frame_client_.get(); }
  51
  52   mojo::ApplicationConnection* application_connection() {
  53     return application_connection_.get();
  54   }
  55
  56   // Asks the remote application for a ViewTreeClient.
  57   mojo::ViewTreeClientPtr GetViewTreeClient();
  58
  59   // Returns the id of the content handler app. Only available once the callback
  60   // has run.
  61   uint32_t GetContentHandlerID() const;
  62
  63  private:
  64   mojom::FrameClientPtr frame_client_;
  65
  66   scoped_ptr<mojo::ApplicationConnection> application_connection_;
  67
  68   DISALLOW_COPY_AND_ASSIGN(FrameConnection);
  69 };
  70
  71 }  // namespace web_view
  72
  73 #endif  // COMPONENTS_WEB_VIEW_FRAME_CONNECTION_H_