navigator.h revision a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7 
1// Copyright 2013 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 CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_H_
6#define CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_H_
7
8#include "base/memory/ref_counted.h"
9#include "content/common/content_export.h"
10
11class GURL;
12
13namespace content {
14
15class NavigationControllerImpl;
16class NavigatorDelegate;
17class RenderFrameHostImpl;
18
19// Implementations of this interface are responsible for performing navigations
20// in a node of the FrameTree. Its lifetime is bound to all FrameTreeNode
21// objects that are using it and will be released once all nodes that use it are
22// freed. The Navigator is bound to a single frame tree and cannot be used by
23// multiple instances of FrameTree.
24// TODO(nasko): Move all navigation methods, such as didStartProvisionalLoad
25// from WebContentsImpl to this interface.
26class CONTENT_EXPORT Navigator : public base::RefCounted<Navigator> {
27 public:
28  // The RenderFrameHostImpl started a provisional load.
29  virtual void DidStartProvisionalLoad(RenderFrameHostImpl* render_frame_host,
30                                       int64 frame_id,
31                                       int64 parent_frame_id,
32                                       bool main_frame,
33                                       const GURL& url) {};
34
35 protected:
36  friend class base::RefCounted<Navigator>;
37  virtual ~Navigator() {}
38};
39
40}  // namespace content
41
42#endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_H_
43