components/html_viewer/html_frame_delegate.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_DELEGATE_H_
   6 #define COMPONENTS_HTML_VIEWER_HTML_FRAME_DELEGATE_H_
   7
   8 namespace mojo {
   9 class ApplicationImpl;
  10 }
  11
  12 namespace html_viewer {
  13
  14 class HTMLFactory;
  15 class HTMLFrame;
  16
  17 class HTMLFrameDelegate {
  18  public:
  19   // Returns the ApplicationImpl for the frame.
  20   virtual mojo::ApplicationImpl* GetApp() = 0;
  21
  22   // Returns the factory for creating various classes.
  23   virtual HTMLFactory* GetHTMLFactory() = 0;
  24
  25   // Invoked when the Frame the delegate is attached to finishes loading. This
  26   // is not invoked for any child frames, only the frame returned from
  27   // HTMLFrameTreeManager::CreateFrameAndAttachToTree().
  28   virtual void OnFrameDidFinishLoad() = 0;
  29
  30   // Invoked when the HTMLFrame the delegate is associated with is swapped
  31   // to a remote frame.
  32   virtual void OnFrameSwappedToRemote() = 0;
  33
  34   // Invoked when this delegate is to take over from |old_delegate| (which may
  35   // be null). This is invoked when a new connection is established and we
  36   // are already rendering to the supplied frame.
  37   virtual void OnSwap(HTMLFrame* frame, HTMLFrameDelegate* old_delegate) = 0;
  38
  39   // Invoked when the HTMLFrame is destroyed.
  40   virtual void OnFrameDestroyed() = 0;
  41
  42  protected:
  43   virtual ~HTMLFrameDelegate() {}
  44 };
  45
  46 }  // namespace html_viewer
  47
  48 #endif  // COMPONENTS_HTML_VIEWER_HTML_FRAME_DELEGATE_H_