1// Copyright (c) 2012 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 UI_WM_CORE_BASE_FOCUS_RULES_H_
6#define UI_WM_CORE_BASE_FOCUS_RULES_H_
7
8#include "base/basictypes.h"
9#include "base/compiler_specific.h"
10#include "ui/wm/core/focus_rules.h"
11
12namespace wm {
13
14// A set of basic focus and activation rules. Specializations should most likely
15// subclass this and call up to these methods rather than reimplementing them.
16class WM_EXPORT BaseFocusRules : public FocusRules {
17 protected:
18  BaseFocusRules();
19  virtual ~BaseFocusRules();
20
21  // Returns true if the children of |window| can be activated.
22  virtual bool SupportsChildActivation(aura::Window* window) const = 0;
23
24  // Returns true if |window| is considered visible for activation purposes.
25  virtual bool IsWindowConsideredVisibleForActivation(
26      aura::Window* window) const;
27
28  // Overridden from FocusRules:
29  virtual bool IsToplevelWindow(aura::Window* window) const OVERRIDE;
30  virtual bool CanActivateWindow(aura::Window* window) const OVERRIDE;
31  virtual bool CanFocusWindow(aura::Window* window) const OVERRIDE;
32  virtual aura::Window* GetToplevelWindow(aura::Window* window) const OVERRIDE;
33  virtual aura::Window* GetActivatableWindow(
34      aura::Window* window) const OVERRIDE;
35  virtual aura::Window* GetFocusableWindow(aura::Window* window) const OVERRIDE;
36  virtual aura::Window* GetNextActivatableWindow(
37      aura::Window* ignore) const OVERRIDE;
38
39 private:
40  DISALLOW_COPY_AND_ASSIGN(BaseFocusRules);
41};
42
43}  // namespace wm
44
45#endif  // UI_WM_CORE_BASE_FOCUS_RULES_H_
46