ui/wm/core/base_focus_rules.h

   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
  12 namespace 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.
  16 class WM_EXPORT BaseFocusRules : public FocusRules {
  17  protected:
  18   BaseFocusRules();
  19   ~BaseFocusRules() override;
  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   bool IsToplevelWindow(aura::Window* window) const override;
  30   bool CanActivateWindow(aura::Window* window) const override;
  31   bool CanFocusWindow(aura::Window* window) const override;
  32   aura::Window* GetToplevelWindow(aura::Window* window) const override;
  33   aura::Window* GetActivatableWindow(aura::Window* window) const override;
  34   aura::Window* GetFocusableWindow(aura::Window* window) const override;
  35   aura::Window* GetNextActivatableWindow(aura::Window* ignore) const override;
  36
  37  private:
  38   DISALLOW_COPY_AND_ASSIGN(BaseFocusRules);
  39 };
  40
  41 }  // namespace wm
  42
  43 #endif  // UI_WM_CORE_BASE_FOCUS_RULES_H_