Change overview mode to so that docked panel windows are not grouped together.

ash/wm/overview/window_selector_controller.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/wm/overview/window_selector_controller.h"
 
 #include <vector>
 
 #include "ash/metrics/user_metrics_recorder.h"
 #include "ash/root_window_controller.h"
 #include "ash/session/session_state_delegate.h"
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/wm/mru_window_tracker.h"
 #include "ash/wm/overview/window_selector.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
 #include "base/metrics/histogram.h"
 #include "ui/aura/window.h"
 
 namespace ash {
 
 WindowSelectorController::WindowSelectorController() {
 }
 
 WindowSelectorController::~WindowSelectorController() {
+  DCHECK(!IsSelecting());
 }
 
 // static
 bool WindowSelectorController::CanSelect() {
   // Don't allow a window overview if the screen is locked or a modal dialog is
   // open or running in kiosk app session.
   return Shell::GetInstance()->session_state_delegate()->
              IsActiveUserSessionStarted() &&
          !Shell::GetInstance()->session_state_delegate()->IsScreenLocked() &&
          !Shell::GetInstance()->IsSystemModalWindowOpen() &&
          Shell::GetInstance()->system_tray_delegate()->GetUserLoginStatus() !=
              user::LOGGED_IN_KIOSK_APP;
 }
 
 void WindowSelectorController::ToggleOverview() {
   if (IsSelecting()) {
     OnSelectionEnded();
   } else {
     // Don't start overview if window selection is not allowed.
     if (!CanSelect())
       return;
 
     std::vector<aura::Window*> windows = ash::Shell::GetInstance()->
         mru_window_tracker()->BuildMruWindowList();
     // Don't enter overview mode with no windows.
     if (windows.empty())
       return;
 
-    window_selector_.reset(new WindowSelector(windows, this));
+    window_selector_.reset(new WindowSelector(this));
+    window_selector_->Init(windows);
     OnSelectionStarted();
   }
 }
 
 bool WindowSelectorController::IsSelecting() {
   return window_selector_.get() != NULL;
 }
 
+bool WindowSelectorController::IsRestoringMinimizedWindows() const {
+  return window_selector_.get() != NULL &&
+         window_selector_->restoring_minimized_windows();
+}
+
 // TODO(flackr): Make WindowSelectorController observe the activation of
 // windows, so we can remove WindowSelectorDelegate.
 void WindowSelectorController::OnSelectionEnded() {
+  window_selector_->Shutdown();
   window_selector_.reset();
   last_selection_time_ = base::Time::Now();
 }
 
 void WindowSelectorController::OnSelectionStarted() {
   if (!last_selection_time_.is_null()) {
     UMA_HISTOGRAM_LONG_TIMES(
         "Ash.WindowSelector.TimeBetweenUse",
         base::Time::Now() - last_selection_time_);
   }
 }
 
 }  // namespace ash