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 #include "components/html_viewer/html_frame.h"
   9
  10 namespace mojo {
  11 class ApplicationImpl;
  12 }
  13
  14 namespace html_viewer {
  15
  16 class HTMLFrameDelegate {
  17  public:
  18   // TODO(yzshen): Remove this check once the browser is able to navigate an
  19   // existing html_viewer instance and about:blank page support is ready.
  20   virtual bool ShouldNavigateLocallyInMainFrame() = 0;
  21
  22   // Invoked when the Frame the delegate is attached to finishes loading. This
  23   // is not invoked for any child frames, only the frame returned from
  24   // HTMLFrameTreeManager::CreateFrameAndAttachToTree().
  25   virtual void OnFrameDidFinishLoad() = 0;
  26
  27   // Returns the ApplicationImpl for the frame.
  28   virtual mojo::ApplicationImpl* GetApp() = 0;
  29
  30   // Creates a new HTMLFrame. The delegate must return non-null.
  31   virtual HTMLFrame* CreateHTMLFrame(HTMLFrame::CreateParams* params) = 0;
  32
  33  protected:
  34   virtual ~HTMLFrameDelegate() {}
  35 };
  36
  37 }  // namespace html_viewer
  38
  39 #endif  // COMPONENTS_HTML_VIEWER_HTML_FRAME_DELEGATE_H_