ui/views/widget/desktop_aura/desktop_focus_rules.cc

   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 #include "ui/views/widget/desktop_aura/desktop_focus_rules.h"
   6
   7 #include "ui/aura/window.h"
   8 #include "ui/aura/window_event_dispatcher.h"
   9
  10 namespace views {
  11
  12 DesktopFocusRules::DesktopFocusRules(aura::Window* content_window)
  13     : content_window_(content_window) {}
  14
  15 DesktopFocusRules::~DesktopFocusRules() {}
  16
  17 bool DesktopFocusRules::CanActivateWindow(aura::Window* window) const {
  18   if (!BaseFocusRules::CanActivateWindow(window))
  19     return false;
  20   // Never activate a window that is not a child of the root window. Transients
  21   // spanning different DesktopNativeWidgetAuras may trigger this.
  22   return !window || content_window_->GetRootWindow()->Contains(window);
  23 }
  24
  25 bool DesktopFocusRules::SupportsChildActivation(aura::Window* window) const {
  26   // In Desktop-Aura, only the content_window or children of the RootWindow are
  27   // activatable.
  28   return window == content_window_->parent() ||
  29          window->GetRootWindow() == window;
  30 }
  31
  32 bool DesktopFocusRules::IsWindowConsideredVisibleForActivation(
  33     aura::Window* window) const {
  34   // |content_window_| is initially hidden and made visible from Show(). Even in
  35   // this state we still want it to be active.
  36   return BaseFocusRules::IsWindowConsideredVisibleForActivation(window) ||
  37       (window == content_window_);
  38 }
  39
  40 aura::Window* DesktopFocusRules::GetToplevelWindow(
  41     aura::Window* window) const {
  42   aura::Window* top_level_window =
  43       wm::BaseFocusRules::GetToplevelWindow(window);
  44   // In Desktop-Aura, only the content_window or children of the RootWindow are
  45   // considered as top level windows.
  46   if (top_level_window == content_window_->parent())
  47     return content_window_;
  48   return top_level_window;
  49 }
  50
  51 aura::Window* DesktopFocusRules::GetNextActivatableWindow(
  52     aura::Window* window) const {
  53   aura::Window* next_activatable_window =
  54       wm::BaseFocusRules::GetNextActivatableWindow(window);
  55   // In Desktop-Aura the content_window_'s parent is a dummy window and thus
  56   // should never be activated. We should return the content_window_ if it
  57   // can be activated in this case.
  58   if (next_activatable_window == content_window_->parent() &&
  59       CanActivateWindow(content_window_))
  60     return content_window_;
  61   return next_activatable_window;
  62 }
  63
  64 }  // namespace views