Port Android relocation packer to chromium build
[chromium-blink-merge.git] / ash / wm / overview / window_selector_controller.cc
blobdf14d27e87c57fb4b8b912d3c195b48d7583c553
1 // Copyright 2013 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.
5 #include "ash/wm/overview/window_selector_controller.h"
7 #include <vector>
9 #include "ash/metrics/user_metrics_recorder.h"
10 #include "ash/root_window_controller.h"
11 #include "ash/session/session_state_delegate.h"
12 #include "ash/shell.h"
13 #include "ash/system/tray/system_tray_delegate.h"
14 #include "ash/wm/mru_window_tracker.h"
15 #include "ash/wm/overview/window_selector.h"
16 #include "ash/wm/window_state.h"
17 #include "ash/wm/window_util.h"
18 #include "base/metrics/histogram.h"
19 #include "ui/aura/window.h"
21 namespace ash {
23 WindowSelectorController::WindowSelectorController() {
26 WindowSelectorController::~WindowSelectorController() {
29 // static
30 bool WindowSelectorController::CanSelect() {
31 // Don't allow a window overview if the screen is locked or a modal dialog is
32 // open or running in kiosk app session.
33 return Shell::GetInstance()->session_state_delegate()->
34 IsActiveUserSessionStarted() &&
35 !Shell::GetInstance()->session_state_delegate()->IsScreenLocked() &&
36 !Shell::GetInstance()->IsSystemModalWindowOpen() &&
37 Shell::GetInstance()->system_tray_delegate()->GetUserLoginStatus() !=
38 user::LOGGED_IN_KIOSK_APP;
41 void WindowSelectorController::ToggleOverview() {
42 if (IsSelecting()) {
43 OnSelectionEnded();
44 } else {
45 // Don't start overview if window selection is not allowed.
46 if (!CanSelect())
47 return;
49 std::vector<aura::Window*> windows = ash::Shell::GetInstance()->
50 mru_window_tracker()->BuildMruWindowList();
51 // Don't enter overview mode with no windows.
52 if (windows.empty())
53 return;
55 Shell::GetInstance()->OnOverviewModeStarting();
56 window_selector_.reset(new WindowSelector(this));
57 window_selector_->Init(windows);
58 OnSelectionStarted();
62 bool WindowSelectorController::IsSelecting() {
63 return window_selector_.get() != NULL;
66 bool WindowSelectorController::IsRestoringMinimizedWindows() const {
67 return window_selector_.get() != NULL &&
68 window_selector_->restoring_minimized_windows();
71 // TODO(flackr): Make WindowSelectorController observe the activation of
72 // windows, so we can remove WindowSelectorDelegate.
73 void WindowSelectorController::OnSelectionEnded() {
74 window_selector_->Shutdown();
75 window_selector_.reset();
76 last_selection_time_ = base::Time::Now();
77 Shell::GetInstance()->OnOverviewModeEnded();
80 void WindowSelectorController::OnSelectionStarted() {
81 if (!last_selection_time_.is_null()) {
82 UMA_HISTOGRAM_LONG_TIMES(
83 "Ash.WindowSelector.TimeBetweenUse",
84 base::Time::Now() - last_selection_time_);
88 } // namespace ash