components/html_viewer/frame_tree_manager.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_HTML_VIEWER_FRAME_TREE_MANAGER_H_
   6 #define COMPONENTS_HTML_VIEWER_FRAME_TREE_MANAGER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "mandoline/services/navigation/public/interfaces/navigation.mojom.h"
  11 #include "mandoline/tab/public/interfaces/frame_tree.mojom.h"
  12 #include "mojo/application/public/cpp/lazy_interface_ptr.h"
  13 #include "third_party/WebKit/public/web/WebFrameClient.h"
  14 #include "third_party/WebKit/public/web/WebNavigationPolicy.h"
  15
  16 namespace blink {
  17 class WebFrame;
  18 class WebFrameClient;
  19 class WebLocalFrame;
  20 class WebRemoteFrameClient;
  21 class WebView;
  22 }
  23
  24 namespace gfx {
  25 class Size;
  26 }
  27
  28 namespace mojo {
  29 class ApplicationConnection;
  30 class ApplicationImpl;
  31 class View;
  32 }
  33
  34 namespace html_viewer {
  35
  36 class Frame;
  37 class FrameTreeManagerDelegate;
  38 class GlobalState;
  39
  40 // FrameTreeManager is responsible for managing the frames that comprise a
  41 // document. Some of the frames may be remote. FrameTreeManager updates its
  42 // state in response to changes from the FrameTreeServer, as well as changes
  43 // from the underlying frames. The frame tree has at least one local frame
  44 // that is backed by a mojo::View.
  45 class FrameTreeManager : public mandoline::FrameTreeClient {
  46  public:
  47   FrameTreeManager(GlobalState* global_state,
  48                    mojo::ApplicationImpl* app,
  49                    mojo::ApplicationConnection* app_connection,
  50                    uint32_t local_frame_id,
  51                    mandoline::FrameTreeServerPtr server);
  52   ~FrameTreeManager() override;
  53
  54   void Init(mojo::View* local_view,
  55             mojo::Array<mandoline::FrameDataPtr> frame_data);
  56
  57   void set_delegate(FrameTreeManagerDelegate* delegate) {
  58     delegate_ = delegate;
  59   }
  60
  61   GlobalState* global_state() { return global_state_; }
  62   mojo::ApplicationImpl* app() { return app_; }
  63
  64   // Returns the Frame/WebFrame that is rendering to the supplied view.
  65   // TODO(sky): we need to support more than one local frame.
  66   Frame* GetLocalFrame();
  67   blink::WebLocalFrame* GetLocalWebFrame();
  68
  69   blink::WebView* GetWebView();
  70
  71  private:
  72   friend class Frame;
  73
  74   // Recursively calls Init() on |frame| and it's children.
  75   void InitFrames(mojo::View* local_view, Frame* frame);
  76
  77   // Returns the navigation policy for the specified frame.
  78   blink::WebNavigationPolicy DecidePolicyForNavigation(
  79       Frame* frame,
  80       const blink::WebFrameClient::NavigationPolicyInfo& info);
  81
  82   // Invoked when a Frame finishes loading.
  83   void OnFrameDidFinishLoad(Frame* frame);
  84
  85   // Invoked when a Frame navigates.
  86   void OnFrameDidNavigateLocally(Frame* frame, const std::string& url);
  87
  88   // Invoked when a Frame is destroye.
  89   void OnFrameDestroyed(Frame* frame);
  90
  91   // mandoline::FrameTreeClient:
  92   void OnConnect(mandoline::FrameTreeServerPtr server,
  93                  mojo::Array<mandoline::FrameDataPtr> frame_data) override;
  94   void OnFrameAdded(mandoline::FrameDataPtr frame_data) override;
  95   void OnFrameRemoved(uint32_t frame_id) override;
  96
  97   GlobalState* global_state_;
  98
  99   mojo::ApplicationImpl* app_;
 100
 101   FrameTreeManagerDelegate* delegate_;
 102
 103   // Frame id of the frame we're rendering to.
 104   const uint32_t local_frame_id_;
 105
 106   mandoline::FrameTreeServerPtr server_;
 107
 108   mojo::LazyInterfacePtr<mojo::NavigatorHost> navigator_host_;
 109
 110   Frame* root_;
 111
 112   DISALLOW_COPY_AND_ASSIGN(FrameTreeManager);
 113 };
 114
 115 }  // namespace html_viewer
 116
 117 #endif  // COMPONENTS_HTML_VIEWER_FRAME_TREE_MANAGER_H_