chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.cc

   1 // Copyright 2015 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 "chrome/browser/ui/views/apps/chrome_native_app_window_views_aura.h"
   6
   7 #include "apps/ui/views/app_window_frame_view.h"
   8 #include "ash/ash_constants.h"
   9 #include "ash/frame/custom_frame_view_ash.h"
  10 #include "ash/screen_util.h"
  11 #include "ash/shell.h"
  12 #include "ash/wm/immersive_fullscreen_controller.h"
  13 #include "ash/wm/panels/panel_frame_view.h"
  14 #include "ash/wm/window_properties.h"
  15 #include "ash/wm/window_state.h"
  16 #include "ash/wm/window_state_delegate.h"
  17 #include "ash/wm/window_state_observer.h"
  18 #include "chrome/browser/ui/ash/ash_util.h"
  19 #include "chrome/browser/ui/ash/multi_user/multi_user_context_menu.h"
  20 #include "chrome/browser/ui/host_desktop.h"
  21 #include "chrome/browser/ui/views/apps/shaped_app_window_targeter.h"
  22 #include "chrome/browser/web_applications/web_app.h"
  23 #include "ui/aura/client/aura_constants.h"
  24 #include "ui/aura/window.h"
  25 #include "ui/aura/window_observer.h"
  26 #include "ui/base/hit_test.h"
  27 #include "ui/base/models/simple_menu_model.h"
  28 #include "ui/gfx/image/image_skia.h"
  29 #include "ui/views/controls/menu/menu_runner.h"
  30 #include "ui/views/widget/widget.h"
  31 #include "ui/wm/core/easy_resize_window_targeter.h"
  32
  33 #if defined(OS_CHROMEOS)
  34 #include "ash/shell_window_ids.h"
  35 #endif
  36
  37 #if defined(OS_LINUX)
  38 #include "chrome/browser/shell_integration_linux.h"
  39 #endif
  40
  41 using extensions::AppWindow;
  42
  43 namespace {
  44
  45 // This class handles a user's fullscreen request (Shift+F4/F4).
  46 class NativeAppWindowStateDelegate : public ash::wm::WindowStateDelegate,
  47                                      public ash::wm::WindowStateObserver,
  48                                      public aura::WindowObserver {
  49  public:
  50   NativeAppWindowStateDelegate(AppWindow* app_window,
  51                                extensions::NativeAppWindow* native_app_window)
  52       : app_window_(app_window),
  53         window_state_(
  54             ash::wm::GetWindowState(native_app_window->GetNativeWindow())) {
  55     // Add a window state observer to exit fullscreen properly in case
  56     // fullscreen is exited without going through AppWindow::Restore(). This
  57     // is the case when exiting immersive fullscreen via the "Restore" window
  58     // control.
  59     // TODO(pkotwicz): This is a hack. Remove ASAP. http://crbug.com/319048
  60     window_state_->AddObserver(this);
  61     window_state_->window()->AddObserver(this);
  62   }
  63   ~NativeAppWindowStateDelegate() override {
  64     if (window_state_) {
  65       window_state_->RemoveObserver(this);
  66       window_state_->window()->RemoveObserver(this);
  67     }
  68   }
  69
  70  private:
  71   // Overridden from ash::wm::WindowStateDelegate.
  72   bool ToggleFullscreen(ash::wm::WindowState* window_state) override {
  73     // Windows which cannot be maximized should not be fullscreened.
  74     DCHECK(window_state->IsFullscreen() || window_state->CanMaximize());
  75     if (window_state->IsFullscreen())
  76       app_window_->Restore();
  77     else if (window_state->CanMaximize())
  78       app_window_->OSFullscreen();
  79     return true;
  80   }
  81
  82   // Overridden from ash::wm::WindowStateObserver:
  83   void OnPostWindowStateTypeChange(ash::wm::WindowState* window_state,
  84                                    ash::wm::WindowStateType old_type) override {
  85     // Since the window state might get set by a window manager, it is possible
  86     // to come here before the application set its |BaseWindow|.
  87     if (!window_state->IsFullscreen() && !window_state->IsMinimized() &&
  88         app_window_->GetBaseWindow() &&
  89         app_window_->GetBaseWindow()->IsFullscreenOrPending()) {
  90       app_window_->Restore();
  91       // Usually OnNativeWindowChanged() is called when the window bounds are
  92       // changed as a result of a state type change. Because the change in state
  93       // type has already occurred, we need to call OnNativeWindowChanged()
  94       // explicitly.
  95       app_window_->OnNativeWindowChanged();
  96     }
  97   }
  98
  99   // Overridden from aura::WindowObserver:
 100   void OnWindowDestroying(aura::Window* window) override {
 101     window_state_->RemoveObserver(this);
 102     window_state_->window()->RemoveObserver(this);
 103     window_state_ = NULL;
 104   }
 105
 106   // Not owned.
 107   AppWindow* app_window_;
 108   ash::wm::WindowState* window_state_;
 109
 110   DISALLOW_COPY_AND_ASSIGN(NativeAppWindowStateDelegate);
 111 };
 112
 113 }  // namespace
 114
 115 ChromeNativeAppWindowViewsAura::ChromeNativeAppWindowViewsAura() {
 116 }
 117
 118 ChromeNativeAppWindowViewsAura::~ChromeNativeAppWindowViewsAura() {
 119 }
 120
 121 void ChromeNativeAppWindowViewsAura::OnBeforeWidgetInit(
 122     const AppWindow::CreateParams& create_params,
 123     views::Widget::InitParams* init_params,
 124     views::Widget* widget) {
 125 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 126   std::string app_name = web_app::GenerateApplicationNameFromExtensionId(
 127       app_window()->extension_id());
 128   // Set up a custom WM_CLASS for app windows. This allows task switchers in
 129   // X11 environments to distinguish them from main browser windows.
 130   init_params->wm_class_name = web_app::GetWMClassFromAppName(app_name);
 131   init_params->wm_class_class = shell_integration_linux::GetProgramClassName();
 132   const char kX11WindowRoleApp[] = "app";
 133   init_params->wm_role_name = std::string(kX11WindowRoleApp);
 134 #endif
 135
 136   ChromeNativeAppWindowViews::OnBeforeWidgetInit(create_params, init_params,
 137                                                  widget);
 138
 139 #if defined(OS_CHROMEOS)
 140   if (create_params.is_ime_window) {
 141     // Puts ime windows into ime window container.
 142     init_params->parent =
 143         ash::Shell::GetContainer(ash::Shell::GetPrimaryRootWindow(),
 144                                  ash::kShellWindowId_ImeWindowParentContainer);
 145   }
 146 #endif
 147 }
 148
 149 void ChromeNativeAppWindowViewsAura::OnBeforePanelWidgetInit(
 150     views::Widget::InitParams* init_params,
 151     views::Widget* widget) {
 152   ChromeNativeAppWindowViews::OnBeforePanelWidgetInit(init_params, widget);
 153
 154   if (ash::Shell::HasInstance()) {
 155     // Open a new panel on the target root.
 156     init_params->bounds = ash::ScreenUtil::ConvertRectToScreen(
 157         ash::Shell::GetTargetRootWindow(), gfx::Rect(GetPreferredSize()));
 158   }
 159 }
 160
 161 apps::AppWindowFrameView*
 162 ChromeNativeAppWindowViewsAura::CreateNonStandardAppFrame() {
 163   apps::AppWindowFrameView* frame =
 164       ChromeNativeAppWindowViews::CreateNonStandardAppFrame();
 165
 166   // For Aura windows on the Ash desktop the sizes are different and the user
 167   // can resize the window from slightly outside the bounds as well.
 168   if (chrome::IsNativeWindowInAsh(widget()->GetNativeWindow())) {
 169     frame->SetResizeSizes(ash::kResizeInsideBoundsSize,
 170                           ash::kResizeOutsideBoundsSize,
 171                           ash::kResizeAreaCornerSize);
 172   }
 173
 174 #if !defined(OS_CHROMEOS)
 175   // For non-Ash windows, install an easy resize window targeter, which ensures
 176   // that the root window (not the app) receives mouse events on the edges.
 177   if (chrome::GetHostDesktopTypeForNativeWindow(widget()->GetNativeWindow()) !=
 178       chrome::HOST_DESKTOP_TYPE_ASH) {
 179     aura::Window* window = widget()->GetNativeWindow();
 180     int resize_inside = frame->resize_inside_bounds_size();
 181     gfx::Insets inset(resize_inside, resize_inside, resize_inside,
 182                       resize_inside);
 183     // Add the EasyResizeWindowTargeter on the window, not its root window. The
 184     // root window does not have a delegate, which is needed to handle the event
 185     // in Linux.
 186     window->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 187         new wm::EasyResizeWindowTargeter(window, inset, inset)));
 188   }
 189 #endif
 190
 191   return frame;
 192 }
 193
 194 gfx::Rect ChromeNativeAppWindowViewsAura::GetRestoredBounds() const {
 195   gfx::Rect* bounds =
 196       widget()->GetNativeWindow()->GetProperty(ash::kRestoreBoundsOverrideKey);
 197   if (bounds && !bounds->IsEmpty())
 198     return *bounds;
 199
 200   return ChromeNativeAppWindowViews::GetRestoredBounds();
 201 }
 202
 203 ui::WindowShowState ChromeNativeAppWindowViewsAura::GetRestoredState() const {
 204   // Use kRestoreShowStateKey in case a window is minimized/hidden.
 205   ui::WindowShowState restore_state = widget()->GetNativeWindow()->GetProperty(
 206       aura::client::kRestoreShowStateKey);
 207   if (widget()->GetNativeWindow()->GetProperty(
 208           ash::kRestoreBoundsOverrideKey)) {
 209     // If an override is given, we use that restore state (after filtering).
 210     restore_state = widget()->GetNativeWindow()->GetProperty(
 211         ash::kRestoreShowStateOverrideKey);
 212   } else {
 213     // Otherwise first normal states are checked.
 214     if (IsMaximized())
 215       return ui::SHOW_STATE_MAXIMIZED;
 216     if (IsFullscreen()) {
 217       if (immersive_fullscreen_controller_.get() &&
 218           immersive_fullscreen_controller_->IsEnabled()) {
 219         // Restore windows which were previously in immersive fullscreen to
 220         // maximized. Restoring the window to a different fullscreen type
 221         // makes for a bad experience.
 222         return ui::SHOW_STATE_MAXIMIZED;
 223       }
 224       return ui::SHOW_STATE_FULLSCREEN;
 225     }
 226   }
 227   // Whitelist states to return so that invalid and transient states
 228   // are not saved and used to restore windows when they are recreated.
 229   switch (restore_state) {
 230     case ui::SHOW_STATE_NORMAL:
 231     case ui::SHOW_STATE_MAXIMIZED:
 232     case ui::SHOW_STATE_FULLSCREEN:
 233       return restore_state;
 234
 235     case ui::SHOW_STATE_DEFAULT:
 236     case ui::SHOW_STATE_MINIMIZED:
 237     case ui::SHOW_STATE_INACTIVE:
 238     case ui::SHOW_STATE_END:
 239       return ui::SHOW_STATE_NORMAL;
 240   }
 241
 242   return ui::SHOW_STATE_NORMAL;
 243 }
 244
 245 bool ChromeNativeAppWindowViewsAura::IsAlwaysOnTop() const {
 246   return app_window()->window_type_is_panel()
 247              ? ash::wm::GetWindowState(widget()->GetNativeWindow())
 248                    ->panel_attached()
 249              : widget()->IsAlwaysOnTop();
 250 }
 251
 252 void ChromeNativeAppWindowViewsAura::ShowContextMenuForView(
 253     views::View* source,
 254     const gfx::Point& p,
 255     ui::MenuSourceType source_type) {
 256 #if defined(OS_CHROMEOS)
 257   scoped_ptr<ui::MenuModel> model =
 258       CreateMultiUserContextMenu(app_window()->GetNativeWindow());
 259   if (!model.get())
 260     return;
 261
 262   // Only show context menu if point is in caption.
 263   gfx::Point point_in_view_coords(p);
 264   views::View::ConvertPointFromScreen(widget()->non_client_view(),
 265                                       &point_in_view_coords);
 266   int hit_test =
 267       widget()->non_client_view()->NonClientHitTest(point_in_view_coords);
 268   if (hit_test == HTCAPTION) {
 269     menu_runner_.reset(new views::MenuRunner(
 270         model.get(),
 271         views::MenuRunner::HAS_MNEMONICS | views::MenuRunner::CONTEXT_MENU));
 272     if (menu_runner_->RunMenuAt(source->GetWidget(), NULL,
 273                                 gfx::Rect(p, gfx::Size(0, 0)),
 274                                 views::MENU_ANCHOR_TOPLEFT, source_type) ==
 275         views::MenuRunner::MENU_DELETED) {
 276       return;
 277     }
 278   }
 279 #endif
 280 }
 281
 282 views::NonClientFrameView*
 283 ChromeNativeAppWindowViewsAura::CreateNonClientFrameView(
 284     views::Widget* widget) {
 285   if (chrome::IsNativeViewInAsh(widget->GetNativeView())) {
 286     // Set the delegate now because CustomFrameViewAsh sets the
 287     // WindowStateDelegate if one is not already set.
 288     ash::wm::GetWindowState(GetNativeWindow())
 289         ->SetDelegate(
 290             scoped_ptr<ash::wm::WindowStateDelegate>(
 291                 new NativeAppWindowStateDelegate(app_window(), this)).Pass());
 292
 293     if (IsFrameless())
 294       return CreateNonStandardAppFrame();
 295
 296     if (app_window()->window_type_is_panel()) {
 297       views::NonClientFrameView* frame_view =
 298           new ash::PanelFrameView(widget, ash::PanelFrameView::FRAME_ASH);
 299       frame_view->set_context_menu_controller(this);
 300       return frame_view;
 301     }
 302
 303     ash::CustomFrameViewAsh* custom_frame_view =
 304         new ash::CustomFrameViewAsh(widget);
 305     // Non-frameless app windows can be put into immersive fullscreen.
 306     immersive_fullscreen_controller_.reset(
 307         new ash::ImmersiveFullscreenController());
 308     custom_frame_view->InitImmersiveFullscreenControllerForView(
 309         immersive_fullscreen_controller_.get());
 310     custom_frame_view->GetHeaderView()->set_context_menu_controller(this);
 311
 312     if (HasFrameColor()) {
 313       custom_frame_view->SetFrameColors(ActiveFrameColor(),
 314                                         InactiveFrameColor());
 315     }
 316
 317     return custom_frame_view;
 318   }
 319
 320   return ChromeNativeAppWindowViews::CreateNonClientFrameView(widget);
 321 }
 322
 323 void ChromeNativeAppWindowViewsAura::SetFullscreen(int fullscreen_types) {
 324   ChromeNativeAppWindowViews::SetFullscreen(fullscreen_types);
 325
 326   if (immersive_fullscreen_controller_.get()) {
 327     // |immersive_fullscreen_controller_| should only be set if immersive
 328     // fullscreen is the fullscreen type used by the OS.
 329     immersive_fullscreen_controller_->SetEnabled(
 330         ash::ImmersiveFullscreenController::WINDOW_TYPE_PACKAGED_APP,
 331         (fullscreen_types & AppWindow::FULLSCREEN_TYPE_OS) != 0);
 332     // Autohide the shelf instead of hiding the shelf completely when only in
 333     // OS fullscreen.
 334     ash::wm::WindowState* window_state =
 335         ash::wm::GetWindowState(widget()->GetNativeWindow());
 336     window_state->set_hide_shelf_when_fullscreen(fullscreen_types !=
 337                                                  AppWindow::FULLSCREEN_TYPE_OS);
 338     DCHECK(ash::Shell::HasInstance());
 339     ash::Shell::GetInstance()->UpdateShelfVisibility();
 340   }
 341 }
 342
 343 void ChromeNativeAppWindowViewsAura::UpdateShape(scoped_ptr<SkRegion> region) {
 344   bool had_shape = !!shape();
 345
 346   ChromeNativeAppWindowViews::UpdateShape(region.Pass());
 347
 348   aura::Window* native_window = widget()->GetNativeWindow();
 349   if (shape() && !had_shape) {
 350     native_window->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 351         new ShapedAppWindowTargeter(native_window, this)));
 352   } else if (!shape() && had_shape) {
 353     native_window->SetEventTargeter(scoped_ptr<ui::EventTargeter>());
 354   }
 355 }