components/html_viewer/html_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_HTML_FRAME_TREE_MANAGER_H_
   6 #define COMPONENTS_HTML_VIEWER_HTML_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 WebString;
  22 class WebView;
  23 }
  24
  25 namespace gfx {
  26 class Size;
  27 }
  28
  29 namespace mojo {
  30 class ApplicationConnection;
  31 class ApplicationImpl;
  32 class View;
  33 }
  34
  35 namespace html_viewer {
  36
  37 class HTMLFrame;
  38 class HTMLFrameTreeManagerDelegate;
  39 class GlobalState;
  40
  41 // HTMLFrameTreeManager is responsible for managing the frames that comprise a
  42 // document. Some of the frames may be remote. HTMLFrameTreeManager updates its
  43 // state in response to changes from the FrameTreeServer, as well as changes
  44 // from the underlying frames. The frame tree has at least one local frame
  45 // that is backed by a mojo::View.
  46 class HTMLFrameTreeManager : public mandoline::FrameTreeClient {
  47  public:
  48   HTMLFrameTreeManager(GlobalState* global_state,
  49                        mojo::ApplicationImpl* app,
  50                        mojo::ApplicationConnection* app_connection,
  51                        uint32_t local_frame_id,
  52                        mandoline::FrameTreeServerPtr server);
  53   ~HTMLFrameTreeManager() override;
  54
  55   void Init(mojo::View* local_view,
  56             mojo::Array<mandoline::FrameDataPtr> frame_data);
  57
  58   void set_delegate(HTMLFrameTreeManagerDelegate* delegate) {
  59     delegate_ = delegate;
  60   }
  61
  62   GlobalState* global_state() { return global_state_; }
  63   mojo::ApplicationImpl* app() { return app_; }
  64
  65   // Returns the Frame/WebFrame that is rendering to the supplied view.
  66   // TODO(sky): we need to support more than one local frame.
  67   HTMLFrame* GetLocalFrame();
  68   blink::WebLocalFrame* GetLocalWebFrame();
  69
  70   blink::WebView* GetWebView();
  71
  72   void LoadingStarted(HTMLFrame* frame);
  73   void LoadingStopped(HTMLFrame* frame);
  74   void ProgressChanged(HTMLFrame* frame, double progress);
  75
  76  private:
  77   friend class HTMLFrame;
  78
  79   // Returns the navigation policy for the specified frame.
  80   blink::WebNavigationPolicy DecidePolicyForNavigation(
  81       HTMLFrame* frame,
  82       const blink::WebFrameClient::NavigationPolicyInfo& info);
  83
  84   // Invoked when a Frame finishes loading.
  85   void OnFrameDidFinishLoad(HTMLFrame* frame);
  86
  87   // Invoked when a Frame navigates.
  88   void OnFrameDidNavigateLocally(HTMLFrame* frame, const std::string& url);
  89
  90   // Invoked when a Frame is destroye.
  91   void OnFrameDestroyed(HTMLFrame* frame);
  92
  93   // Invoked when the name of a frame changes.
  94   void OnFrameDidChangeName(HTMLFrame* frame, const blink::WebString& name);
  95
  96   // mandoline::FrameTreeClient:
  97   void OnConnect(mandoline::FrameTreeServerPtr server,
  98                  mojo::Array<mandoline::FrameDataPtr> frame_data) override;
  99   void OnFrameAdded(mandoline::FrameDataPtr frame_data) override;
 100   void OnFrameRemoved(uint32_t frame_id) override;
 101   void OnFrameNameChanged(uint32_t frame_id, const mojo::String& name) override;
 102
 103   GlobalState* global_state_;
 104
 105   mojo::ApplicationImpl* app_;
 106
 107   HTMLFrameTreeManagerDelegate* delegate_;
 108
 109   // Frame id of the frame we're rendering to.
 110   const uint32_t local_frame_id_;
 111
 112   mandoline::FrameTreeServerPtr server_;
 113
 114   mojo::LazyInterfacePtr<mojo::NavigatorHost> navigator_host_;
 115
 116   HTMLFrame* root_;
 117
 118   DISALLOW_COPY_AND_ASSIGN(HTMLFrameTreeManager);
 119 };
 120
 121 }  // namespace html_viewer
 122
 123 #endif  // COMPONENTS_HTML_VIEWER_HTML_FRAME_TREE_MANAGER_H_