CrOS Tablet Window management - Split Screen part I

ash/shell.cc

 // Copyright (c) 2012 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/shell.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 90 matching lines @@
 #include "ash/wm/maximize_mode/maximize_mode_window_manager.h"
 #include "ash/wm/mru_window_tracker.h"
 #include "ash/wm/native_cursor_manager_ash_classic.h"
 #include "ash/wm/native_cursor_manager_ash_mus.h"
 #include "ash/wm/overlay_event_filter.h"
 #include "ash/wm/overview/window_selector_controller.h"
 #include "ash/wm/power_button_controller.h"
 #include "ash/wm/resize_shadow_controller.h"
 #include "ash/wm/root_window_finder.h"
 #include "ash/wm/screen_pinning_controller.h"
+#include "ash/wm/splitview/split_view_controller.h"
 #include "ash/wm/system_gesture_event_filter.h"
 #include "ash/wm/system_modal_container_event_filter.h"
 #include "ash/wm/system_modal_container_layout_manager.h"
 #include "ash/wm/toplevel_window_event_handler.h"
 #include "ash/wm/video_detector.h"
 #include "ash/wm/window_animations.h"
 #include "ash/wm/window_cycle_controller.h"
 #include "ash/wm/window_positioner.h"
 #include "ash/wm/window_properties.h"
 #include "ash/wm/window_util.h"
@@ skipping 336 matching lines @@
     native_cursor_manager_->SetNativeCursorEnabled(!enabled);
   }
 }
 
 void Shell::DoInitialWorkspaceAnimation() {
   return GetPrimaryRootWindowController()
       ->workspace_controller()
       ->DoInitialAnimation();
 }
 
+bool Shell::IsSplitViewModeActive() const {
+  return split_view_controller_->IsSplitViewModeActive();
+}
+
 void Shell::AddShellObserver(ShellObserver* observer) {
   shell_observers_.AddObserver(observer);
 }
 
 void Shell::RemoveShellObserver(ShellObserver* observer) {
   shell_observers_.RemoveObserver(observer);
 }
 
 void Shell::ShowAppList() {
   // Show the app list on the default display for new windows.
@@ skipping 45 matching lines @@
 void Shell::NotifyOverviewModeStarting() {
   for (auto& observer : shell_observers_)
     observer.OnOverviewModeStarting();
 }
 
 void Shell::NotifyOverviewModeEnded() {
   for (auto& observer : shell_observers_)
     observer.OnOverviewModeEnded();
 }
 
+void Shell::NotifySplitViewModeStarting() {
+  for (auto& observer : shell_observers_)
+    observer.OnSplitViewModeStarting();
+}
+
+void Shell::NotifySplitViewModeEnded() {
+  for (auto& observer : shell_observers_)
+    observer.OnSplitViewModeEnded();
+}
+
 void Shell::NotifyFullscreenStateChanged(bool is_fullscreen,
                                          aura::Window* root_window) {
   for (auto& observer : shell_observers_)
     observer.OnFullscreenStateChanged(is_fullscreen, root_window);
 }
 
 void Shell::NotifyPinnedStateChanged(aura::Window* pinned_window) {
   for (auto& observer : shell_observers_)
     observer.OnPinnedStateChanged(pinned_window);
 }
@@ skipping 93 matching lines @@
 
   user_metrics_recorder_->OnShellShuttingDown();
 
   shell_delegate_->PreShutdown();
 
   // Remove the focus from any window. This will prevent overhead and side
   // effects (e.g. crashes) from changing focus during shutdown.
   // See bug crbug.com/134502.
   aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(nullptr);
 
-  // Please keep in same order as in Init() because it's easy to miss one.
+  // Please keep in reverse order as in Init() because it's easy to miss one.
+  split_view_controller_.reset();
+
   if (window_modality_controller_)
     window_modality_controller_.reset();
 
   RemovePreTargetHandler(magnifier_key_scroll_handler_.get());
   magnifier_key_scroll_handler_.reset();
 
   RemovePreTargetHandler(speech_feedback_handler_.get());
   speech_feedback_handler_.reset();
 
   RemovePreTargetHandler(overlay_filter_.get());
@@ skipping 445 matching lines @@
   user_activity_notifier_.reset(
       new ui::UserActivityPowerManagerNotifier(user_activity_detector_.get()));
   video_activity_notifier_.reset(
       new VideoActivityNotifier(video_detector_.get()));
   bluetooth_notification_controller_.reset(new BluetoothNotificationController);
   screen_orientation_controller_ =
       base::MakeUnique<ScreenOrientationController>();
   screen_layout_observer_.reset(new ScreenLayoutObserver());
   sms_observer_.reset(new SmsObserver());
 
+  split_view_controller_.reset(new SplitViewController());
+
   // The compositor thread and main message loop have to be running in
   // order to create mirror window. Run it after the main message loop
   // is started.
   display_manager_->CreateMirrorWindowAsyncIfAny();
 
   for (auto& observer : shell_observers_)
     observer.OnShellInitialized();
 
   user_metrics_recorder_->OnShellInitialized();
 }
@@ skipping 148 matching lines @@
 void Shell::OnPrefServiceInitialized(
     std::unique_ptr<::PrefService> pref_service) {
   if (!instance_)
     return;
   // |pref_service_| is null if can't connect to Chrome (as happens when
   // running mash outside of chrome --mash and chrome isn't built).
   pref_service_ = std::move(pref_service);
 }
 
 }  // namespace ash