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/app_window_easy_resize_window_targeter.h"
  22 #include "chrome/browser/ui/views/apps/shaped_app_window_targeter.h"
  23 #include "chrome/browser/web_applications/web_app.h"
  24 #include "ui/aura/client/aura_constants.h"
  25 #include "ui/aura/window.h"
  26 #include "ui/aura/window_observer.h"
  27 #include "ui/base/hit_test.h"
  28 #include "ui/base/models/simple_menu_model.h"
  29 #include "ui/gfx/image/image_skia.h"
  30 #include "ui/views/controls/menu/menu_runner.h"
  31 #include "ui/views/widget/widget.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::InitializeWindow(
 122     AppWindow* app_window,
 123     const AppWindow::CreateParams& create_params) {
 124   ChromeNativeAppWindowViews::InitializeWindow(app_window, create_params);
 125   // Restore docked state on ash desktop and ignore it elsewhere.
 126   if (create_params.state == ui::SHOW_STATE_DOCKED &&
 127       chrome::GetHostDesktopTypeForNativeWindow(widget()->GetNativeWindow()) ==
 128           chrome::HOST_DESKTOP_TYPE_ASH) {
 129     widget()->GetNativeWindow()->SetProperty(aura::client::kShowStateKey,
 130                                              create_params.state);
 131   }
 132 }
 133
 134 void ChromeNativeAppWindowViewsAura::OnBeforeWidgetInit(
 135     const AppWindow::CreateParams& create_params,
 136     views::Widget::InitParams* init_params,
 137     views::Widget* widget) {
 138 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 139   std::string app_name = web_app::GenerateApplicationNameFromExtensionId(
 140       app_window()->extension_id());
 141   // Set up a custom WM_CLASS for app windows. This allows task switchers in
 142   // X11 environments to distinguish them from main browser windows.
 143   init_params->wm_class_name = web_app::GetWMClassFromAppName(app_name);
 144   init_params->wm_class_class = shell_integration_linux::GetProgramClassName();
 145   const char kX11WindowRoleApp[] = "app";
 146   init_params->wm_role_name = std::string(kX11WindowRoleApp);
 147 #endif
 148
 149   ChromeNativeAppWindowViews::OnBeforeWidgetInit(create_params, init_params,
 150                                                  widget);
 151
 152 #if defined(OS_CHROMEOS)
 153   if (create_params.is_ime_window) {
 154     // Puts ime windows into ime window container.
 155     init_params->parent =
 156         ash::Shell::GetContainer(ash::Shell::GetPrimaryRootWindow(),
 157                                  ash::kShellWindowId_ImeWindowParentContainer);
 158   }
 159 #endif
 160 }
 161
 162 void ChromeNativeAppWindowViewsAura::OnBeforePanelWidgetInit(
 163     bool use_default_bounds,
 164     views::Widget::InitParams* init_params,
 165     views::Widget* widget) {
 166   ChromeNativeAppWindowViews::OnBeforePanelWidgetInit(use_default_bounds,
 167                                                       init_params,
 168                                                       widget);
 169
 170   if (ash::Shell::HasInstance() && use_default_bounds) {
 171     // Open a new panel on the target root.
 172     init_params->bounds = ash::ScreenUtil::ConvertRectToScreen(
 173         ash::Shell::GetTargetRootWindow(), gfx::Rect(GetPreferredSize()));
 174   }
 175 }
 176
 177 views::NonClientFrameView*
 178 ChromeNativeAppWindowViewsAura::CreateNonStandardAppFrame() {
 179   apps::AppWindowFrameView* frame =
 180       new apps::AppWindowFrameView(widget(), this, HasFrameColor(),
 181                                    ActiveFrameColor(), InactiveFrameColor());
 182   frame->Init();
 183
 184   // For Aura windows on the Ash desktop the sizes are different and the user
 185   // can resize the window from slightly outside the bounds as well.
 186   if (chrome::IsNativeWindowInAsh(widget()->GetNativeWindow())) {
 187     frame->SetResizeSizes(ash::kResizeInsideBoundsSize,
 188                           ash::kResizeOutsideBoundsSize,
 189                           ash::kResizeAreaCornerSize);
 190   }
 191
 192 #if !defined(OS_CHROMEOS)
 193   // For non-Ash windows, install an easy resize window targeter, which ensures
 194   // that the root window (not the app) receives mouse events on the edges.
 195   if (chrome::GetHostDesktopTypeForNativeWindow(widget()->GetNativeWindow()) !=
 196       chrome::HOST_DESKTOP_TYPE_ASH) {
 197     aura::Window* window = widget()->GetNativeWindow();
 198     int resize_inside = frame->resize_inside_bounds_size();
 199     gfx::Insets inset(resize_inside, resize_inside, resize_inside,
 200                       resize_inside);
 201     // Add the AppWindowEasyResizeWindowTargeter on the window, not its root
 202     // window. The root window does not have a delegate, which is needed to
 203     // handle the event in Linux.
 204     window->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 205         new AppWindowEasyResizeWindowTargeter(window, inset, this)));
 206   }
 207 #endif
 208
 209   return frame;
 210 }
 211
 212 gfx::Rect ChromeNativeAppWindowViewsAura::GetRestoredBounds() const {
 213   gfx::Rect* bounds =
 214       widget()->GetNativeWindow()->GetProperty(ash::kRestoreBoundsOverrideKey);
 215   if (bounds && !bounds->IsEmpty())
 216     return *bounds;
 217
 218   return ChromeNativeAppWindowViews::GetRestoredBounds();
 219 }
 220
 221 ui::WindowShowState ChromeNativeAppWindowViewsAura::GetRestoredState() const {
 222   // Use kRestoreShowStateKey in case a window is minimized/hidden.
 223   ui::WindowShowState restore_state = widget()->GetNativeWindow()->GetProperty(
 224       aura::client::kRestoreShowStateKey);
 225   if (widget()->GetNativeWindow()->GetProperty(
 226           ash::kRestoreBoundsOverrideKey)) {
 227     // If an override is given, we use that restore state (after filtering).
 228     restore_state = widget()->GetNativeWindow()->GetProperty(
 229         ash::kRestoreShowStateOverrideKey);
 230   } else {
 231     // Otherwise first normal states are checked.
 232     if (IsMaximized())
 233       return ui::SHOW_STATE_MAXIMIZED;
 234     if (IsFullscreen()) {
 235       if (immersive_fullscreen_controller_.get() &&
 236           immersive_fullscreen_controller_->IsEnabled()) {
 237         // Restore windows which were previously in immersive fullscreen to
 238         // maximized. Restoring the window to a different fullscreen type
 239         // makes for a bad experience.
 240         return ui::SHOW_STATE_MAXIMIZED;
 241       }
 242       return ui::SHOW_STATE_FULLSCREEN;
 243     }
 244     if (widget()->GetNativeWindow()->GetProperty(aura::client::kShowStateKey) ==
 245         ui::SHOW_STATE_DOCKED) {
 246       return ui::SHOW_STATE_DOCKED;
 247     }
 248   }
 249   // Whitelist states to return so that invalid and transient states
 250   // are not saved and used to restore windows when they are recreated.
 251   switch (restore_state) {
 252     case ui::SHOW_STATE_NORMAL:
 253     case ui::SHOW_STATE_MAXIMIZED:
 254     case ui::SHOW_STATE_FULLSCREEN:
 255       return restore_state;
 256
 257     case ui::SHOW_STATE_DEFAULT:
 258     case ui::SHOW_STATE_MINIMIZED:
 259     case ui::SHOW_STATE_INACTIVE:
 260     case ui::SHOW_STATE_DOCKED:
 261     case ui::SHOW_STATE_END:
 262       return ui::SHOW_STATE_NORMAL;
 263   }
 264
 265   return ui::SHOW_STATE_NORMAL;
 266 }
 267
 268 bool ChromeNativeAppWindowViewsAura::IsAlwaysOnTop() const {
 269   return app_window()->window_type_is_panel()
 270              ? ash::wm::GetWindowState(widget()->GetNativeWindow())
 271                    ->panel_attached()
 272              : widget()->IsAlwaysOnTop();
 273 }
 274
 275 void ChromeNativeAppWindowViewsAura::ShowContextMenuForView(
 276     views::View* source,
 277     const gfx::Point& p,
 278     ui::MenuSourceType source_type) {
 279 #if defined(OS_CHROMEOS)
 280   scoped_ptr<ui::MenuModel> model =
 281       CreateMultiUserContextMenu(app_window()->GetNativeWindow());
 282   if (!model.get())
 283     return;
 284
 285   // Only show context menu if point is in caption.
 286   gfx::Point point_in_view_coords(p);
 287   views::View::ConvertPointFromScreen(widget()->non_client_view(),
 288                                       &point_in_view_coords);
 289   int hit_test =
 290       widget()->non_client_view()->NonClientHitTest(point_in_view_coords);
 291   if (hit_test == HTCAPTION) {
 292     menu_runner_.reset(new views::MenuRunner(
 293         model.get(),
 294         views::MenuRunner::HAS_MNEMONICS | views::MenuRunner::CONTEXT_MENU));
 295     if (menu_runner_->RunMenuAt(source->GetWidget(), NULL,
 296                                 gfx::Rect(p, gfx::Size(0, 0)),
 297                                 views::MENU_ANCHOR_TOPLEFT, source_type) ==
 298         views::MenuRunner::MENU_DELETED) {
 299       return;
 300     }
 301   }
 302 #endif
 303 }
 304
 305 views::NonClientFrameView*
 306 ChromeNativeAppWindowViewsAura::CreateNonClientFrameView(
 307     views::Widget* widget) {
 308   if (chrome::IsNativeViewInAsh(widget->GetNativeView())) {
 309     // Set the delegate now because CustomFrameViewAsh sets the
 310     // WindowStateDelegate if one is not already set.
 311     ash::wm::GetWindowState(GetNativeWindow())
 312         ->SetDelegate(
 313             scoped_ptr<ash::wm::WindowStateDelegate>(
 314                 new NativeAppWindowStateDelegate(app_window(), this)).Pass());
 315
 316     if (IsFrameless())
 317       return CreateNonStandardAppFrame();
 318
 319     if (app_window()->window_type_is_panel()) {
 320       views::NonClientFrameView* frame_view =
 321           new ash::PanelFrameView(widget, ash::PanelFrameView::FRAME_ASH);
 322       frame_view->set_context_menu_controller(this);
 323       return frame_view;
 324     }
 325
 326     ash::CustomFrameViewAsh* custom_frame_view =
 327         new ash::CustomFrameViewAsh(widget);
 328     // Non-frameless app windows can be put into immersive fullscreen.
 329     immersive_fullscreen_controller_.reset(
 330         new ash::ImmersiveFullscreenController());
 331     custom_frame_view->InitImmersiveFullscreenControllerForView(
 332         immersive_fullscreen_controller_.get());
 333     custom_frame_view->GetHeaderView()->set_context_menu_controller(this);
 334
 335     if (HasFrameColor()) {
 336       custom_frame_view->SetFrameColors(ActiveFrameColor(),
 337                                         InactiveFrameColor());
 338     }
 339
 340     return custom_frame_view;
 341   }
 342
 343   return ChromeNativeAppWindowViews::CreateNonClientFrameView(widget);
 344 }
 345
 346 void ChromeNativeAppWindowViewsAura::SetFullscreen(int fullscreen_types) {
 347   ChromeNativeAppWindowViews::SetFullscreen(fullscreen_types);
 348
 349   if (immersive_fullscreen_controller_.get()) {
 350     // |immersive_fullscreen_controller_| should only be set if immersive
 351     // fullscreen is the fullscreen type used by the OS.
 352     immersive_fullscreen_controller_->SetEnabled(
 353         ash::ImmersiveFullscreenController::WINDOW_TYPE_PACKAGED_APP,
 354         (fullscreen_types & AppWindow::FULLSCREEN_TYPE_OS) != 0);
 355     // Autohide the shelf instead of hiding the shelf completely when only in
 356     // OS fullscreen.
 357     ash::wm::WindowState* window_state =
 358         ash::wm::GetWindowState(widget()->GetNativeWindow());
 359     window_state->set_hide_shelf_when_fullscreen(fullscreen_types !=
 360                                                  AppWindow::FULLSCREEN_TYPE_OS);
 361     DCHECK(ash::Shell::HasInstance());
 362     ash::Shell::GetInstance()->UpdateShelfVisibility();
 363   }
 364 }
 365
 366 void ChromeNativeAppWindowViewsAura::UpdateShape(scoped_ptr<SkRegion> region) {
 367   bool had_shape = !!shape();
 368
 369   ChromeNativeAppWindowViews::UpdateShape(region.Pass());
 370
 371   aura::Window* native_window = widget()->GetNativeWindow();
 372   if (shape() && !had_shape) {
 373     native_window->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 374         new ShapedAppWindowTargeter(native_window, this)));
 375   } else if (!shape() && had_shape) {
 376     native_window->SetEventTargeter(scoped_ptr<ui::EventTargeter>());
 377   }
 378 }