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| 1 // Copyright 2014 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 "ash/common/wm/maximize_mode/maximize_mode_window_manager.h" | |
| 6 | |
| 7 #include "ash/common/ash_switches.h" | |
| 8 #include "ash/common/session/session_state_delegate.h" | |
| 9 #include "ash/common/wm/maximize_mode/maximize_mode_event_handler.h" | |
| 10 #include "ash/common/wm/maximize_mode/maximize_mode_window_state.h" | |
| 11 #include "ash/common/wm/maximize_mode/workspace_backdrop_delegate.h" | |
| 12 #include "ash/common/wm/mru_window_tracker.h" | |
| 13 #include "ash/common/wm/overview/window_selector_controller.h" | |
| 14 #include "ash/common/wm/window_state.h" | |
| 15 #include "ash/common/wm/wm_event.h" | |
| 16 #include "ash/common/wm/workspace_controller.h" | |
| 17 #include "ash/common/wm_shell.h" | |
| 18 #include "ash/common/wm_window.h" | |
| 19 #include "ash/public/cpp/shell_window_ids.h" | |
| 20 #include "ash/root_window_controller.h" | |
| 21 #include "ash/shell.h" | |
| 22 #include "ash/wm/window_state_aura.h" | |
| 23 #include "base/command_line.h" | |
| 24 #include "base/memory/ptr_util.h" | |
| 25 #include "base/stl_util.h" | |
| 26 #include "ui/aura/client/aura_constants.h" | |
| 27 #include "ui/display/screen.h" | |
| 28 | |
| 29 namespace ash { | |
| 30 | |
| 31 namespace { | |
| 32 | |
| 33 // Exits overview mode if it is currently active. | |
| 34 void CancelOverview() { | |
| 35 WindowSelectorController* controller = | |
| 36 WmShell::Get()->window_selector_controller(); | |
| 37 if (controller->IsSelecting()) | |
| 38 controller->OnSelectionEnded(); | |
| 39 } | |
| 40 | |
| 41 } // namespace | |
| 42 | |
| 43 MaximizeModeWindowManager::~MaximizeModeWindowManager() { | |
| 44 // Overview mode needs to be ended before exiting maximize mode to prevent | |
| 45 // transforming windows which are currently in | |
| 46 // overview: http://crbug.com/366605 | |
| 47 CancelOverview(); | |
| 48 for (aura::Window* window : added_windows_) | |
| 49 window->RemoveObserver(this); | |
| 50 added_windows_.clear(); | |
| 51 WmShell::Get()->RemoveShellObserver(this); | |
| 52 display::Screen::GetScreen()->RemoveObserver(this); | |
| 53 EnableBackdropBehindTopWindowOnEachDisplay(false); | |
| 54 RemoveWindowCreationObservers(); | |
| 55 RestoreAllWindows(); | |
| 56 } | |
| 57 | |
| 58 int MaximizeModeWindowManager::GetNumberOfManagedWindows() { | |
| 59 return window_state_map_.size(); | |
| 60 } | |
| 61 | |
| 62 void MaximizeModeWindowManager::AddWindow(WmWindow* window) { | |
| 63 // Only add the window if it is a direct dependent of a container window | |
| 64 // and not yet tracked. | |
| 65 if (!ShouldHandleWindow(window) || | |
| 66 base::ContainsKey(window_state_map_, window) || | |
| 67 !IsContainerWindow(window->GetParent()->aura_window())) { | |
| 68 return; | |
| 69 } | |
| 70 | |
| 71 MaximizeAndTrackWindow(window); | |
| 72 } | |
| 73 | |
| 74 void MaximizeModeWindowManager::WindowStateDestroyed(WmWindow* window) { | |
| 75 // At this time ForgetWindow() should already have been called. If not, | |
| 76 // someone else must have replaced the "window manager's state object". | |
| 77 DCHECK(!window->aura_window()->HasObserver(this)); | |
| 78 | |
| 79 auto it = window_state_map_.find(window); | |
| 80 DCHECK(it != window_state_map_.end()); | |
| 81 window_state_map_.erase(it); | |
| 82 } | |
| 83 | |
| 84 void MaximizeModeWindowManager::OnOverviewModeStarting() { | |
| 85 if (backdrops_hidden_) | |
| 86 return; | |
| 87 | |
| 88 EnableBackdropBehindTopWindowOnEachDisplay(false); | |
| 89 SetDeferBoundsUpdates(true); | |
| 90 backdrops_hidden_ = true; | |
| 91 } | |
| 92 | |
| 93 void MaximizeModeWindowManager::OnOverviewModeEnded() { | |
| 94 if (!backdrops_hidden_) | |
| 95 return; | |
| 96 | |
| 97 backdrops_hidden_ = false; | |
| 98 EnableBackdropBehindTopWindowOnEachDisplay(true); | |
| 99 SetDeferBoundsUpdates(false); | |
| 100 } | |
| 101 | |
| 102 void MaximizeModeWindowManager::OnWindowDestroying(aura::Window* window) { | |
| 103 if (IsContainerWindow(window)) { | |
| 104 // container window can be removed on display destruction. | |
| 105 window->RemoveObserver(this); | |
| 106 observed_container_windows_.erase(window); | |
| 107 } else if (base::ContainsValue(added_windows_, window)) { | |
| 108 // Added window was destroyed before being shown. | |
| 109 added_windows_.erase(window); | |
| 110 window->RemoveObserver(this); | |
| 111 } else { | |
| 112 // If a known window gets destroyed we need to remove all knowledge about | |
| 113 // it. | |
| 114 ForgetWindow(WmWindow::Get(window)); | |
| 115 } | |
| 116 } | |
| 117 | |
| 118 void MaximizeModeWindowManager::OnWindowHierarchyChanged( | |
| 119 const HierarchyChangeParams& params) { | |
| 120 // A window can get removed and then re-added by a drag and drop operation. | |
| 121 if (params.new_parent && IsContainerWindow(params.new_parent) && | |
| 122 !base::ContainsKey(window_state_map_, WmWindow::Get(params.target))) { | |
| 123 // Don't register the window if the window is invisible. Instead, | |
| 124 // wait until it becomes visible because the client may update the | |
| 125 // flag to control if the window should be added. | |
| 126 if (!params.target->IsVisible()) { | |
| 127 if (!base::ContainsValue(added_windows_, params.target)) { | |
| 128 added_windows_.insert(params.target); | |
| 129 params.target->AddObserver(this); | |
| 130 } | |
| 131 return; | |
| 132 } | |
| 133 MaximizeAndTrackWindow(WmWindow::Get(params.target)); | |
| 134 // When the state got added, the "WM_EVENT_ADDED_TO_WORKSPACE" event got | |
| 135 // already sent and we have to notify our state again. | |
| 136 if (base::ContainsKey(window_state_map_, WmWindow::Get(params.target))) { | |
| 137 wm::WMEvent event(wm::WM_EVENT_ADDED_TO_WORKSPACE); | |
| 138 wm::GetWindowState(params.target)->OnWMEvent(&event); | |
| 139 } | |
| 140 } | |
| 141 } | |
| 142 | |
| 143 void MaximizeModeWindowManager::OnWindowPropertyChanged(aura::Window* window, | |
| 144 const void* key, | |
| 145 intptr_t old) { | |
| 146 // Stop managing |window| if the always-on-top property is added. | |
| 147 if (key == aura::client::kAlwaysOnTopKey && | |
| 148 window->GetProperty(aura::client::kAlwaysOnTopKey)) { | |
| 149 ForgetWindow(WmWindow::Get(window)); | |
| 150 } | |
| 151 } | |
| 152 | |
| 153 void MaximizeModeWindowManager::OnWindowBoundsChanged( | |
| 154 aura::Window* window, | |
| 155 const gfx::Rect& old_bounds, | |
| 156 const gfx::Rect& new_bounds) { | |
| 157 if (!IsContainerWindow(window)) | |
| 158 return; | |
| 159 // Reposition all non maximizeable windows. | |
| 160 for (auto& pair : window_state_map_) | |
| 161 pair.second->UpdateWindowPosition(pair.first->GetWindowState()); | |
| 162 } | |
| 163 | |
| 164 void MaximizeModeWindowManager::OnWindowVisibilityChanged(aura::Window* window, | |
| 165 bool visible) { | |
| 166 // Skip if it's already managed. | |
| 167 if (base::ContainsKey(window_state_map_, WmWindow::Get(window))) | |
| 168 return; | |
| 169 | |
| 170 if (IsContainerWindow(window->parent()) && | |
| 171 base::ContainsValue(added_windows_, window) && visible) { | |
| 172 added_windows_.erase(window); | |
| 173 window->RemoveObserver(this); | |
| 174 MaximizeAndTrackWindow(WmWindow::Get(window)); | |
| 175 // When the state got added, the "WM_EVENT_ADDED_TO_WORKSPACE" event got | |
| 176 // already sent and we have to notify our state again. | |
| 177 if (base::ContainsKey(window_state_map_, WmWindow::Get(window))) { | |
| 178 wm::WMEvent event(wm::WM_EVENT_ADDED_TO_WORKSPACE); | |
| 179 wm::GetWindowState(window)->OnWMEvent(&event); | |
| 180 } | |
| 181 } | |
| 182 } | |
| 183 | |
| 184 void MaximizeModeWindowManager::OnDisplayAdded( | |
| 185 const display::Display& display) { | |
| 186 DisplayConfigurationChanged(); | |
| 187 } | |
| 188 | |
| 189 void MaximizeModeWindowManager::OnDisplayRemoved( | |
| 190 const display::Display& display) { | |
| 191 DisplayConfigurationChanged(); | |
| 192 } | |
| 193 | |
| 194 void MaximizeModeWindowManager::OnDisplayMetricsChanged(const display::Display&, | |
| 195 uint32_t) { | |
| 196 // Nothing to do here. | |
| 197 } | |
| 198 | |
| 199 MaximizeModeWindowManager::MaximizeModeWindowManager() | |
| 200 : backdrops_hidden_(false) { | |
| 201 // The overview mode needs to be ended before the maximize mode is started. To | |
| 202 // guarantee the proper order, it will be turned off from here. | |
| 203 CancelOverview(); | |
| 204 | |
| 205 MaximizeAllWindows(); | |
| 206 AddWindowCreationObservers(); | |
| 207 EnableBackdropBehindTopWindowOnEachDisplay(true); | |
| 208 display::Screen::GetScreen()->AddObserver(this); | |
| 209 WmShell::Get()->AddShellObserver(this); | |
| 210 event_handler_ = WmShell::Get()->CreateMaximizeModeEventHandler(); | |
| 211 } | |
| 212 | |
| 213 void MaximizeModeWindowManager::MaximizeAllWindows() { | |
| 214 MruWindowTracker::WindowList windows = | |
| 215 WmShell::Get()->mru_window_tracker()->BuildWindowListIgnoreModal(); | |
| 216 // Add all existing Mru windows. | |
| 217 for (WmWindow* window : windows) | |
| 218 MaximizeAndTrackWindow(window); | |
| 219 } | |
| 220 | |
| 221 void MaximizeModeWindowManager::RestoreAllWindows() { | |
| 222 while (window_state_map_.size()) | |
| 223 ForgetWindow(window_state_map_.begin()->first); | |
| 224 } | |
| 225 | |
| 226 void MaximizeModeWindowManager::SetDeferBoundsUpdates( | |
| 227 bool defer_bounds_updates) { | |
| 228 for (auto& pair : window_state_map_) | |
| 229 pair.second->SetDeferBoundsUpdates(defer_bounds_updates); | |
| 230 } | |
| 231 | |
| 232 void MaximizeModeWindowManager::MaximizeAndTrackWindow(WmWindow* window) { | |
| 233 if (!ShouldHandleWindow(window)) | |
| 234 return; | |
| 235 | |
| 236 DCHECK(!base::ContainsKey(window_state_map_, window)); | |
| 237 window->aura_window()->AddObserver(this); | |
| 238 | |
| 239 // We create and remember a maximize mode state which will attach itself to | |
| 240 // the provided state object. | |
| 241 window_state_map_[window] = new MaximizeModeWindowState(window, this); | |
| 242 } | |
| 243 | |
| 244 void MaximizeModeWindowManager::ForgetWindow(WmWindow* window) { | |
| 245 WindowToState::iterator it = window_state_map_.find(window); | |
| 246 | |
| 247 // The following DCHECK could fail if our window state object was destroyed | |
| 248 // earlier by someone else. However - at this point there is no other client | |
| 249 // which replaces the state object and therefore this should not happen. | |
| 250 DCHECK(it != window_state_map_.end()); | |
| 251 window->aura_window()->RemoveObserver(this); | |
| 252 | |
| 253 // By telling the state object to revert, it will switch back the old | |
| 254 // State object and destroy itself, calling WindowStateDestroyed(). | |
| 255 it->second->LeaveMaximizeMode(it->first->GetWindowState()); | |
| 256 DCHECK(!base::ContainsKey(window_state_map_, window)); | |
| 257 } | |
| 258 | |
| 259 bool MaximizeModeWindowManager::ShouldHandleWindow(WmWindow* window) { | |
| 260 DCHECK(window); | |
| 261 | |
| 262 // Windows with the always-on-top property should be free-floating and thus | |
| 263 // not managed by us. | |
| 264 if (window->IsAlwaysOnTop()) | |
| 265 return false; | |
| 266 | |
| 267 // Windows in the dock should not be managed by us. | |
| 268 if (window->GetWindowState()->IsDocked()) | |
| 269 return false; | |
| 270 | |
| 271 // If the changing bounds in the maximized/fullscreen is allowed, then | |
| 272 // let the client manage it even in maximized mode. | |
| 273 if (window->GetWindowState()->allow_set_bounds_in_maximized()) | |
| 274 return false; | |
| 275 | |
| 276 return window->GetType() == ui::wm::WINDOW_TYPE_NORMAL; | |
| 277 } | |
| 278 | |
| 279 void MaximizeModeWindowManager::AddWindowCreationObservers() { | |
| 280 DCHECK(observed_container_windows_.empty()); | |
| 281 // Observe window activations/creations in the default containers on all root | |
| 282 // windows. | |
| 283 for (aura::Window* root : Shell::GetInstance()->GetAllRootWindows()) { | |
| 284 aura::Window* default_container = | |
| 285 root->GetChildById(kShellWindowId_DefaultContainer); | |
| 286 DCHECK(!base::ContainsKey(observed_container_windows_, default_container)); | |
| 287 default_container->AddObserver(this); | |
| 288 observed_container_windows_.insert(default_container); | |
| 289 } | |
| 290 } | |
| 291 | |
| 292 void MaximizeModeWindowManager::RemoveWindowCreationObservers() { | |
| 293 for (aura::Window* window : observed_container_windows_) | |
| 294 window->RemoveObserver(this); | |
| 295 observed_container_windows_.clear(); | |
| 296 } | |
| 297 | |
| 298 void MaximizeModeWindowManager::DisplayConfigurationChanged() { | |
| 299 EnableBackdropBehindTopWindowOnEachDisplay(false); | |
| 300 RemoveWindowCreationObservers(); | |
| 301 AddWindowCreationObservers(); | |
| 302 EnableBackdropBehindTopWindowOnEachDisplay(true); | |
| 303 } | |
| 304 | |
| 305 bool MaximizeModeWindowManager::IsContainerWindow(aura::Window* window) { | |
| 306 return base::ContainsKey(observed_container_windows_, window); | |
| 307 } | |
| 308 | |
| 309 void MaximizeModeWindowManager::EnableBackdropBehindTopWindowOnEachDisplay( | |
| 310 bool enable) { | |
| 311 // This function should be a no-op if backdrops have been disabled. | |
| 312 if (base::CommandLine::ForCurrentProcess()->HasSwitch( | |
| 313 switches::kAshDisableMaximizeModeWindowBackdrop)) { | |
| 314 return; | |
| 315 } | |
| 316 | |
| 317 if (backdrops_hidden_) | |
| 318 return; | |
| 319 | |
| 320 // Inform the WorkspaceLayoutManager that we want to show a backdrop behind | |
| 321 // the topmost window of its container. | |
| 322 for (WmWindow* root : WmShell::Get()->GetAllRootWindows()) { | |
| 323 RootWindowController* controller = root->GetRootWindowController(); | |
| 324 WmWindow* default_container = | |
| 325 root->GetChildByShellWindowId(kShellWindowId_DefaultContainer); | |
| 326 controller->workspace_controller()->SetMaximizeBackdropDelegate( | |
| 327 enable ? base::MakeUnique<WorkspaceBackdropDelegate>(default_container) | |
| 328 : nullptr); | |
| 329 } | |
| 330 } | |
| 331 | |
| 332 } // namespace ash | |
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Issue 2736573002:
chromeos: Move files in //ash/common to //ash, part 2 (Closed)
