1// Copyright (c) 2010 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 CHROME_BROWSER_INSTANT_INSTANT_DELEGATE_H_
6#define CHROME_BROWSER_INSTANT_INSTANT_DELEGATE_H_
7#pragma once
8
9#include "base/string16.h"
10#include "chrome/common/instant_types.h"
11
12class TabContentsWrapper;
13
14namespace gfx {
15class Rect;
16}
17
18// InstantController's delegate. Normally the Browser implements this. See
19// InstantController for details.
20class InstantDelegate {
21 public:
22  // Invoked when instant starts loading, but before the preview tab contents is
23  // ready to be shown. This may be used to animate between the states.
24  // This is followed by ShowInstant and/or HideInstant.
25  virtual void PrepareForInstant() = 0;
26
27  // Invoked when the instant TabContents should be shown.
28  virtual void ShowInstant(TabContentsWrapper* preview_contents) = 0;
29
30  // Invoked when the instant TabContents should be hidden. Instant still may be
31  // active at the time this is invoked. Use |is_active()| to determine if
32  // instant is still active.
33  virtual void HideInstant() = 0;
34
35  // Invoked when the user does something that should result in the preview
36  // TabContents becoming the active TabContents. The delegate takes ownership
37  // of the supplied TabContents.
38  virtual void CommitInstant(TabContentsWrapper* preview_contents) = 0;
39
40  // Invoked when the suggested text is to change to |text|.
41  virtual void SetSuggestedText(const string16& text,
42                                InstantCompleteBehavior behavior) = 0;
43
44  // Returns the bounds instant will be placed at in screen coordinates.
45  virtual gfx::Rect GetInstantBounds() = 0;
46
47 protected:
48  virtual ~InstantDelegate() {}
49};
50
51#endif  // CHROME_BROWSER_INSTANT_INSTANT_DELEGATE_H_
52