mandoline/tab/frame_tree_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 MANDOLINE_TAB_FRAME_TREE_DELEGATE_H_
   6 #define MANDOLINE_TAB_FRAME_TREE_DELEGATE_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "components/view_manager/public/interfaces/view_tree.mojom.h"
  10 #include "mandoline/tab/public/interfaces/frame_tree.mojom.h"
  11 #include "mojo/services/network/public/interfaces/url_loader.mojom.h"
  12
  13 namespace mandoline {
  14
  15 class Frame;
  16 class FrameUserData;
  17 class HTMLMessageEvent;
  18
  19 class FrameTreeDelegate {
  20  public:
  21   // Returns whether a request to post a message from |source| to |target|
  22   // is allowed. |source| and |target| are never null.
  23   virtual bool CanPostMessageEventToFrame(const Frame* source,
  24                                           const Frame* target,
  25                                           HTMLMessageEvent* event) = 0;
  26
  27   virtual void LoadingStateChanged(bool loading) = 0;
  28   virtual void ProgressChanged(double progress) = 0;
  29
  30   // |source| is requesting a navigation. If |target_type| is
  31   // |EXISTING_FRAME| then |target_frame| identifies the frame to perform the
  32   // navigation in, otherwise |target_frame| is not used. |target_frame| may
  33   // be null, even for |EXISTING_FRAME|.
  34   // TODO(sky): this needs to distinguish between navigate in source, vs new
  35   // background tab, vs new foreground tab.
  36   virtual void NavigateTopLevel(Frame* source, mojo::URLRequestPtr request) = 0;
  37
  38   // Returns true if |target| can navigation to |request|. If the navigation is
  39   // allowed the client should set the arguments appropriately.
  40   virtual bool CanNavigateFrame(
  41       Frame* target,
  42       mojo::URLRequestPtr request,
  43       FrameTreeClient** frame_tree_client,
  44       scoped_ptr<FrameUserData>* frame_user_data,
  45       mojo::ViewTreeClientPtr* view_tree_client) = 0;
  46
  47   // Invoked when a navigation in |frame| has been initiated.
  48   virtual void DidStartNavigation(Frame* frame) = 0;
  49
  50  protected:
  51   virtual ~FrameTreeDelegate() {}
  52 };
  53
  54 }  // namespace mandoline
  55
  56 #endif  // MANDOLINE_TAB_FRAME_TREE_DELEGATE_H_