ui/views/widget/widget.cc

   1 // Copyright (c) 2012 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 "ui/views/widget/widget.h"
   6
   7 #include "base/logging.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "base/strings/utf_string_conversions.h"
  10 #include "base/trace_event/trace_event.h"
  11 #include "ui/base/cursor/cursor.h"
  12 #include "ui/base/default_theme_provider.h"
  13 #include "ui/base/hit_test.h"
  14 #include "ui/base/ime/input_method.h"
  15 #include "ui/base/l10n/l10n_font_util.h"
  16 #include "ui/base/resource/resource_bundle.h"
  17 #include "ui/compositor/compositor.h"
  18 #include "ui/compositor/layer.h"
  19 #include "ui/events/event.h"
  20 #include "ui/events/event_utils.h"
  21 #include "ui/gfx/image/image_skia.h"
  22 #include "ui/gfx/screen.h"
  23 #include "ui/views/controls/menu/menu_controller.h"
  24 #include "ui/views/event_monitor.h"
  25 #include "ui/views/focus/focus_manager.h"
  26 #include "ui/views/focus/focus_manager_factory.h"
  27 #include "ui/views/focus/view_storage.h"
  28 #include "ui/views/focus/widget_focus_manager.h"
  29 #include "ui/views/views_delegate.h"
  30 #include "ui/views/widget/native_widget_private.h"
  31 #include "ui/views/widget/root_view.h"
  32 #include "ui/views/widget/tooltip_manager.h"
  33 #include "ui/views/widget/widget_delegate.h"
  34 #include "ui/views/widget/widget_deletion_observer.h"
  35 #include "ui/views/widget/widget_observer.h"
  36 #include "ui/views/widget/widget_removals_observer.h"
  37 #include "ui/views/window/custom_frame_view.h"
  38 #include "ui/views/window/dialog_delegate.h"
  39
  40 namespace views {
  41
  42 namespace {
  43
  44 // If |view| has a layer the layer is added to |layers|. Else this recurses
  45 // through the children. This is used to build a list of the layers created by
  46 // views that are direct children of the Widgets layer.
  47 void BuildRootLayers(View* view, std::vector<ui::Layer*>* layers) {
  48   if (view->layer()) {
  49     layers->push_back(view->layer());
  50   } else {
  51     for (int i = 0; i < view->child_count(); ++i)
  52       BuildRootLayers(view->child_at(i), layers);
  53   }
  54 }
  55
  56 // Create a native widget implementation.
  57 // First, use the supplied one if non-NULL.
  58 // Finally, make a default one.
  59 NativeWidget* CreateNativeWidget(NativeWidget* native_widget,
  60                                  internal::NativeWidgetDelegate* delegate) {
  61   if (!native_widget) {
  62     native_widget =
  63         internal::NativeWidgetPrivate::CreateNativeWidget(delegate);
  64   }
  65   return native_widget;
  66 }
  67
  68 void NotifyCaretBoundsChanged(ui::InputMethod* input_method) {
  69   if (!input_method)
  70     return;
  71   ui::TextInputClient* client = input_method->GetTextInputClient();
  72   if (client)
  73     input_method->OnCaretBoundsChanged(client);
  74 }
  75
  76 }  // namespace
  77
  78 // A default implementation of WidgetDelegate, used by Widget when no
  79 // WidgetDelegate is supplied.
  80 class DefaultWidgetDelegate : public WidgetDelegate {
  81  public:
  82   explicit DefaultWidgetDelegate(Widget* widget) : widget_(widget) {
  83   }
  84   ~DefaultWidgetDelegate() override {}
  85
  86   // Overridden from WidgetDelegate:
  87   void DeleteDelegate() override { delete this; }
  88   Widget* GetWidget() override { return widget_; }
  89   const Widget* GetWidget() const override { return widget_; }
  90   bool ShouldAdvanceFocusToTopLevelWidget() const override {
  91     // In most situations where a Widget is used without a delegate the Widget
  92     // is used as a container, so that we want focus to advance to the top-level
  93     // widget. A good example of this is the find bar.
  94     return true;
  95   }
  96
  97  private:
  98   Widget* widget_;
  99
 100   DISALLOW_COPY_AND_ASSIGN(DefaultWidgetDelegate);
 101 };
 102
 103 ////////////////////////////////////////////////////////////////////////////////
 104 // Widget, InitParams:
 105
 106 Widget::InitParams::InitParams()
 107     : type(TYPE_WINDOW),
 108       delegate(NULL),
 109       child(false),
 110       opacity(INFER_OPACITY),
 111       accept_events(true),
 112       activatable(ACTIVATABLE_DEFAULT),
 113       keep_on_top(false),
 114       visible_on_all_workspaces(false),
 115       ownership(NATIVE_WIDGET_OWNS_WIDGET),
 116       mirror_origin_in_rtl(false),
 117       shadow_type(SHADOW_TYPE_DEFAULT),
 118       remove_standard_frame(false),
 119       use_system_default_icon(false),
 120       show_state(ui::SHOW_STATE_DEFAULT),
 121       parent(NULL),
 122       native_widget(NULL),
 123       desktop_window_tree_host(NULL),
 124       layer_type(ui::LAYER_TEXTURED),
 125       context(NULL),
 126       force_show_in_taskbar(false) {
 127 }
 128
 129 Widget::InitParams::InitParams(Type type)
 130     : type(type),
 131       delegate(NULL),
 132       child(false),
 133       opacity(INFER_OPACITY),
 134       accept_events(true),
 135       activatable(ACTIVATABLE_DEFAULT),
 136       keep_on_top(type == TYPE_MENU || type == TYPE_DRAG),
 137       visible_on_all_workspaces(false),
 138       ownership(NATIVE_WIDGET_OWNS_WIDGET),
 139       mirror_origin_in_rtl(false),
 140       shadow_type(SHADOW_TYPE_DEFAULT),
 141       remove_standard_frame(false),
 142       use_system_default_icon(false),
 143       show_state(ui::SHOW_STATE_DEFAULT),
 144       parent(NULL),
 145       native_widget(NULL),
 146       desktop_window_tree_host(NULL),
 147       layer_type(ui::LAYER_TEXTURED),
 148       context(NULL),
 149       force_show_in_taskbar(false) {
 150 }
 151
 152 Widget::InitParams::~InitParams() {
 153 }
 154
 155 ////////////////////////////////////////////////////////////////////////////////
 156 // Widget, public:
 157
 158 Widget::Widget()
 159     : native_widget_(NULL),
 160       widget_delegate_(NULL),
 161       non_client_view_(NULL),
 162       dragged_view_(NULL),
 163       ownership_(InitParams::NATIVE_WIDGET_OWNS_WIDGET),
 164       is_secondary_widget_(true),
 165       frame_type_(FRAME_TYPE_DEFAULT),
 166       disable_inactive_rendering_(false),
 167       widget_closed_(false),
 168       saved_show_state_(ui::SHOW_STATE_DEFAULT),
 169       focus_on_creation_(true),
 170       is_top_level_(false),
 171       native_widget_initialized_(false),
 172       native_widget_destroyed_(false),
 173       is_mouse_button_pressed_(false),
 174       ignore_capture_loss_(false),
 175       last_mouse_event_was_move_(false),
 176       auto_release_capture_(true),
 177       root_layers_dirty_(false),
 178       movement_disabled_(false),
 179       observer_manager_(this) {
 180 }
 181
 182 Widget::~Widget() {
 183   DestroyRootView();
 184   if (ownership_ == InitParams::WIDGET_OWNS_NATIVE_WIDGET) {
 185     delete native_widget_;
 186   } else {
 187     DCHECK(native_widget_destroyed_)
 188         << "Destroying a widget with a live native widget. "
 189         << "Widget probably should use WIDGET_OWNS_NATIVE_WIDGET ownership.";
 190   }
 191 }
 192
 193 // static
 194 Widget* Widget::CreateWindow(WidgetDelegate* delegate) {
 195   return CreateWindowWithBounds(delegate, gfx::Rect());
 196 }
 197
 198 // static
 199 Widget* Widget::CreateWindowWithBounds(WidgetDelegate* delegate,
 200                                        const gfx::Rect& bounds) {
 201   Widget* widget = new Widget;
 202   Widget::InitParams params;
 203   params.bounds = bounds;
 204   params.delegate = delegate;
 205   widget->Init(params);
 206   return widget;
 207 }
 208
 209 // static
 210 Widget* Widget::CreateWindowWithParent(WidgetDelegate* delegate,
 211                                        gfx::NativeView parent) {
 212   return CreateWindowWithParentAndBounds(delegate, parent, gfx::Rect());
 213 }
 214
 215 // static
 216 Widget* Widget::CreateWindowWithParentAndBounds(WidgetDelegate* delegate,
 217                                                 gfx::NativeView parent,
 218                                                 const gfx::Rect& bounds) {
 219   Widget* widget = new Widget;
 220   Widget::InitParams params;
 221   params.delegate = delegate;
 222   params.parent = parent;
 223   params.bounds = bounds;
 224   widget->Init(params);
 225   return widget;
 226 }
 227
 228 // static
 229 Widget* Widget::CreateWindowWithContext(WidgetDelegate* delegate,
 230                                         gfx::NativeWindow context) {
 231   return CreateWindowWithContextAndBounds(delegate, context, gfx::Rect());
 232 }
 233
 234 // static
 235 Widget* Widget::CreateWindowWithContextAndBounds(WidgetDelegate* delegate,
 236                                                  gfx::NativeWindow context,
 237                                                  const gfx::Rect& bounds) {
 238   Widget* widget = new Widget;
 239   Widget::InitParams params;
 240   params.delegate = delegate;
 241   params.context = context;
 242   params.bounds = bounds;
 243   widget->Init(params);
 244   return widget;
 245 }
 246
 247 // static
 248 Widget* Widget::GetWidgetForNativeView(gfx::NativeView native_view) {
 249   internal::NativeWidgetPrivate* native_widget =
 250       internal::NativeWidgetPrivate::GetNativeWidgetForNativeView(native_view);
 251   return native_widget ? native_widget->GetWidget() : NULL;
 252 }
 253
 254 // static
 255 Widget* Widget::GetWidgetForNativeWindow(gfx::NativeWindow native_window) {
 256   internal::NativeWidgetPrivate* native_widget =
 257       internal::NativeWidgetPrivate::GetNativeWidgetForNativeWindow(
 258           native_window);
 259   return native_widget ? native_widget->GetWidget() : NULL;
 260 }
 261
 262 // static
 263 Widget* Widget::GetTopLevelWidgetForNativeView(gfx::NativeView native_view) {
 264   internal::NativeWidgetPrivate* native_widget =
 265       internal::NativeWidgetPrivate::GetTopLevelNativeWidget(native_view);
 266   return native_widget ? native_widget->GetWidget() : NULL;
 267 }
 268
 269
 270 // static
 271 void Widget::GetAllChildWidgets(gfx::NativeView native_view,
 272                                 Widgets* children) {
 273   internal::NativeWidgetPrivate::GetAllChildWidgets(native_view, children);
 274 }
 275
 276 // static
 277 void Widget::GetAllOwnedWidgets(gfx::NativeView native_view,
 278                                 Widgets* owned) {
 279   internal::NativeWidgetPrivate::GetAllOwnedWidgets(native_view, owned);
 280 }
 281
 282 // static
 283 void Widget::ReparentNativeView(gfx::NativeView native_view,
 284                                 gfx::NativeView new_parent) {
 285   internal::NativeWidgetPrivate::ReparentNativeView(native_view, new_parent);
 286 }
 287
 288 // static
 289 int Widget::GetLocalizedContentsWidth(int col_resource_id) {
 290   return ui::GetLocalizedContentsWidthForFont(col_resource_id,
 291       ResourceBundle::GetSharedInstance().GetFont(ResourceBundle::BaseFont));
 292 }
 293
 294 // static
 295 int Widget::GetLocalizedContentsHeight(int row_resource_id) {
 296   return ui::GetLocalizedContentsHeightForFont(row_resource_id,
 297       ResourceBundle::GetSharedInstance().GetFont(ResourceBundle::BaseFont));
 298 }
 299
 300 // static
 301 gfx::Size Widget::GetLocalizedContentsSize(int col_resource_id,
 302                                            int row_resource_id) {
 303   return gfx::Size(GetLocalizedContentsWidth(col_resource_id),
 304                    GetLocalizedContentsHeight(row_resource_id));
 305 }
 306
 307 // static
 308 bool Widget::RequiresNonClientView(InitParams::Type type) {
 309   return type == InitParams::TYPE_WINDOW ||
 310          type == InitParams::TYPE_PANEL ||
 311          type == InitParams::TYPE_BUBBLE;
 312 }
 313
 314 void Widget::Init(const InitParams& in_params) {
 315   TRACE_EVENT0("views", "Widget::Init");
 316   InitParams params = in_params;
 317
 318   params.child |= (params.type == InitParams::TYPE_CONTROL);
 319   is_top_level_ = !params.child;
 320
 321   if (params.opacity == views::Widget::InitParams::INFER_OPACITY &&
 322       params.type != views::Widget::InitParams::TYPE_WINDOW &&
 323       params.type != views::Widget::InitParams::TYPE_PANEL)
 324     params.opacity = views::Widget::InitParams::OPAQUE_WINDOW;
 325
 326   if (ViewsDelegate::GetInstance())
 327     ViewsDelegate::GetInstance()->OnBeforeWidgetInit(&params, this);
 328
 329   if (params.opacity == views::Widget::InitParams::INFER_OPACITY)
 330     params.opacity = views::Widget::InitParams::OPAQUE_WINDOW;
 331
 332   bool can_activate = false;
 333   if (params.activatable != InitParams::ACTIVATABLE_DEFAULT) {
 334     can_activate = (params.activatable == InitParams::ACTIVATABLE_YES);
 335   } else if (params.type != InitParams::TYPE_CONTROL &&
 336              params.type != InitParams::TYPE_POPUP &&
 337              params.type != InitParams::TYPE_MENU &&
 338              params.type != InitParams::TYPE_TOOLTIP &&
 339              params.type != InitParams::TYPE_DRAG) {
 340     can_activate = true;
 341     params.activatable = InitParams::ACTIVATABLE_YES;
 342   } else {
 343     can_activate = false;
 344     params.activatable = InitParams::ACTIVATABLE_NO;
 345   }
 346
 347   widget_delegate_ = params.delegate ?
 348       params.delegate : new DefaultWidgetDelegate(this);
 349   widget_delegate_->set_can_activate(can_activate);
 350
 351   ownership_ = params.ownership;
 352   native_widget_ = CreateNativeWidget(params.native_widget, this)->
 353                    AsNativeWidgetPrivate();
 354   root_view_.reset(CreateRootView());
 355   default_theme_provider_.reset(new ui::DefaultThemeProvider);
 356   if (params.type == InitParams::TYPE_MENU) {
 357     is_mouse_button_pressed_ =
 358         internal::NativeWidgetPrivate::IsMouseButtonDown();
 359   }
 360   native_widget_->InitNativeWidget(params);
 361   if (RequiresNonClientView(params.type)) {
 362     non_client_view_ = new NonClientView;
 363     non_client_view_->SetFrameView(CreateNonClientFrameView());
 364     // Create the ClientView, add it to the NonClientView and add the
 365     // NonClientView to the RootView. This will cause everything to be parented.
 366     non_client_view_->set_client_view(widget_delegate_->CreateClientView(this));
 367     non_client_view_->SetOverlayView(widget_delegate_->CreateOverlayView());
 368     SetContentsView(non_client_view_);
 369     // Initialize the window's icon and title before setting the window's
 370     // initial bounds; the frame view's preferred height may depend on the
 371     // presence of an icon or a title.
 372     UpdateWindowIcon();
 373     UpdateWindowTitle();
 374     non_client_view_->ResetWindowControls();
 375     SetInitialBounds(params.bounds);
 376     if (params.show_state == ui::SHOW_STATE_MAXIMIZED)
 377       Maximize();
 378     else if (params.show_state == ui::SHOW_STATE_MINIMIZED)
 379       Minimize();
 380   } else if (params.delegate) {
 381     SetContentsView(params.delegate->GetContentsView());
 382     SetInitialBoundsForFramelessWindow(params.bounds);
 383   }
 384   // This must come after SetContentsView() or it might not be able to find
 385   // the correct NativeTheme (on Linux). See http://crbug.com/384492
 386   observer_manager_.Add(GetNativeTheme());
 387   native_widget_initialized_ = true;
 388 }
 389
 390 // Unconverted methods (see header) --------------------------------------------
 391
 392 gfx::NativeView Widget::GetNativeView() const {
 393   return native_widget_->GetNativeView();
 394 }
 395
 396 gfx::NativeWindow Widget::GetNativeWindow() const {
 397   return native_widget_->GetNativeWindow();
 398 }
 399
 400 void Widget::AddObserver(WidgetObserver* observer) {
 401   // Make sure that there is no nullptr in observer list. crbug.com/471649.
 402   CHECK(observer);
 403   observers_.AddObserver(observer);
 404 }
 405
 406 void Widget::RemoveObserver(WidgetObserver* observer) {
 407   observers_.RemoveObserver(observer);
 408 }
 409
 410 bool Widget::HasObserver(const WidgetObserver* observer) const {
 411   return observers_.HasObserver(observer);
 412 }
 413
 414 void Widget::AddRemovalsObserver(WidgetRemovalsObserver* observer) {
 415   removals_observers_.AddObserver(observer);
 416 }
 417
 418 void Widget::RemoveRemovalsObserver(WidgetRemovalsObserver* observer) {
 419   removals_observers_.RemoveObserver(observer);
 420 }
 421
 422 bool Widget::HasRemovalsObserver(const WidgetRemovalsObserver* observer) const {
 423   return removals_observers_.HasObserver(observer);
 424 }
 425
 426 bool Widget::GetAccelerator(int cmd_id, ui::Accelerator* accelerator) const {
 427   return false;
 428 }
 429
 430 void Widget::ViewHierarchyChanged(
 431     const View::ViewHierarchyChangedDetails& details) {
 432   if (!details.is_add) {
 433     if (details.child == dragged_view_)
 434       dragged_view_ = NULL;
 435     FocusManager* focus_manager = GetFocusManager();
 436     if (focus_manager)
 437       focus_manager->ViewRemoved(details.child);
 438     ViewStorage::GetInstance()->ViewRemoved(details.child);
 439     native_widget_->ViewRemoved(details.child);
 440   }
 441 }
 442
 443 void Widget::NotifyNativeViewHierarchyWillChange() {
 444   FocusManager* focus_manager = GetFocusManager();
 445   // We are being removed from a window hierarchy.  Treat this as
 446   // the root_view_ being removed.
 447   if (focus_manager)
 448     focus_manager->ViewRemoved(root_view_.get());
 449 }
 450
 451 void Widget::NotifyNativeViewHierarchyChanged() {
 452   root_view_->NotifyNativeViewHierarchyChanged();
 453 }
 454
 455 void Widget::NotifyWillRemoveView(View* view) {
 456   FOR_EACH_OBSERVER(WidgetRemovalsObserver,
 457                     removals_observers_,
 458                     OnWillRemoveView(this, view));
 459 }
 460
 461 // Converted methods (see header) ----------------------------------------------
 462
 463 Widget* Widget::GetTopLevelWidget() {
 464   return const_cast<Widget*>(
 465       static_cast<const Widget*>(this)->GetTopLevelWidget());
 466 }
 467
 468 const Widget* Widget::GetTopLevelWidget() const {
 469   // GetTopLevelNativeWidget doesn't work during destruction because
 470   // property is gone after gobject gets deleted. Short circuit here
 471   // for toplevel so that InputMethod can remove itself from
 472   // focus manager.
 473   return is_top_level() ? this : native_widget_->GetTopLevelWidget();
 474 }
 475
 476 void Widget::SetContentsView(View* view) {
 477   // Do not SetContentsView() again if it is already set to the same view.
 478   if (view == GetContentsView())
 479     return;
 480   root_view_->SetContentsView(view);
 481   if (non_client_view_ != view) {
 482     // |non_client_view_| can only be non-NULL here if RequiresNonClientView()
 483     // was true when the widget was initialized. Creating widgets with non
 484     // client views and then setting the contents view can cause subtle
 485     // problems on Windows, where the native widget thinks there is still a
 486     // |non_client_view_|. If you get this error, either use a different type
 487     // when initializing the widget, or don't call SetContentsView().
 488     DCHECK(!non_client_view_);
 489     non_client_view_ = NULL;
 490   }
 491 }
 492
 493 View* Widget::GetContentsView() {
 494   return root_view_->GetContentsView();
 495 }
 496
 497 gfx::Rect Widget::GetWindowBoundsInScreen() const {
 498   return native_widget_->GetWindowBoundsInScreen();
 499 }
 500
 501 gfx::Rect Widget::GetClientAreaBoundsInScreen() const {
 502   return native_widget_->GetClientAreaBoundsInScreen();
 503 }
 504
 505 gfx::Rect Widget::GetRestoredBounds() const {
 506   return native_widget_->GetRestoredBounds();
 507 }
 508
 509 void Widget::SetBounds(const gfx::Rect& bounds) {
 510   native_widget_->SetBounds(bounds);
 511 }
 512
 513 void Widget::SetSize(const gfx::Size& size) {
 514   native_widget_->SetSize(size);
 515 }
 516
 517 void Widget::CenterWindow(const gfx::Size& size) {
 518   native_widget_->CenterWindow(size);
 519 }
 520
 521 void Widget::SetBoundsConstrained(const gfx::Rect& bounds) {
 522   gfx::Rect work_area =
 523       gfx::Screen::GetScreenFor(GetNativeView())->GetDisplayNearestPoint(
 524           bounds.origin()).work_area();
 525   if (work_area.IsEmpty()) {
 526     SetBounds(bounds);
 527   } else {
 528     // Inset the work area slightly.
 529     work_area.Inset(10, 10, 10, 10);
 530     work_area.AdjustToFit(bounds);
 531     SetBounds(work_area);
 532   }
 533 }
 534
 535 void Widget::SetVisibilityChangedAnimationsEnabled(bool value) {
 536   native_widget_->SetVisibilityChangedAnimationsEnabled(value);
 537 }
 538
 539 void Widget::SetVisibilityAnimationDuration(const base::TimeDelta& duration) {
 540   native_widget_->SetVisibilityAnimationDuration(duration);
 541 }
 542
 543 void Widget::SetVisibilityAnimationTransition(VisibilityTransition transition) {
 544   native_widget_->SetVisibilityAnimationTransition(transition);
 545 }
 546
 547 Widget::MoveLoopResult Widget::RunMoveLoop(
 548     const gfx::Vector2d& drag_offset,
 549     MoveLoopSource source,
 550     MoveLoopEscapeBehavior escape_behavior) {
 551   return native_widget_->RunMoveLoop(drag_offset, source, escape_behavior);
 552 }
 553
 554 void Widget::EndMoveLoop() {
 555   native_widget_->EndMoveLoop();
 556 }
 557
 558 void Widget::StackAboveWidget(Widget* widget) {
 559   native_widget_->StackAbove(widget->GetNativeView());
 560 }
 561
 562 void Widget::StackAbove(gfx::NativeView native_view) {
 563   native_widget_->StackAbove(native_view);
 564 }
 565
 566 void Widget::StackAtTop() {
 567   native_widget_->StackAtTop();
 568 }
 569
 570 void Widget::StackBelow(gfx::NativeView native_view) {
 571   native_widget_->StackBelow(native_view);
 572 }
 573
 574 void Widget::SetShape(SkRegion* shape) {
 575   native_widget_->SetShape(shape);
 576 }
 577
 578 void Widget::Close() {
 579   if (widget_closed_) {
 580     // It appears we can hit this code path if you close a modal dialog then
 581     // close the last browser before the destructor is hit, which triggers
 582     // invoking Close again.
 583     return;
 584   }
 585
 586   bool can_close = true;
 587   if (non_client_view_)
 588     can_close = non_client_view_->CanClose();
 589   if (can_close) {
 590     SaveWindowPlacement();
 591
 592     // During tear-down the top-level focus manager becomes unavailable to
 593     // GTK tabbed panes and their children, so normal deregistration via
 594     // |FormManager::ViewRemoved()| calls are fouled.  We clear focus here
 595     // to avoid these redundant steps and to avoid accessing deleted views
 596     // that may have been in focus.
 597     if (is_top_level() && focus_manager_.get())
 598       focus_manager_->SetFocusedView(NULL);
 599
 600     FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetClosing(this));
 601     native_widget_->Close();
 602     widget_closed_ = true;
 603   }
 604 }
 605
 606 void Widget::CloseNow() {
 607   FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetClosing(this));
 608   native_widget_->CloseNow();
 609 }
 610
 611 bool Widget::IsClosed() const {
 612   return widget_closed_;
 613 }
 614
 615 void Widget::Show() {
 616   const ui::Layer* layer = GetLayer();
 617   TRACE_EVENT1("views", "Widget::Show", "layer",
 618                layer ? layer->name() : "none");
 619   if (non_client_view_) {
 620     // While initializing, the kiosk mode will go to full screen before the
 621     // widget gets shown. In that case we stay in full screen mode, regardless
 622     // of the |saved_show_state_| member.
 623     if (saved_show_state_ == ui::SHOW_STATE_MAXIMIZED &&
 624         !initial_restored_bounds_.IsEmpty() &&
 625         !IsFullscreen()) {
 626       native_widget_->ShowMaximizedWithBounds(initial_restored_bounds_);
 627     } else {
 628       native_widget_->ShowWithWindowState(
 629           IsFullscreen() ? ui::SHOW_STATE_FULLSCREEN : saved_show_state_);
 630     }
 631     // |saved_show_state_| only applies the first time the window is shown.
 632     // If we don't reset the value the window may be shown maximized every time
 633     // it is subsequently shown after being hidden.
 634     saved_show_state_ = ui::SHOW_STATE_NORMAL;
 635   } else {
 636     CanActivate()
 637         ? native_widget_->Show()
 638         : native_widget_->ShowWithWindowState(ui::SHOW_STATE_INACTIVE);
 639   }
 640 }
 641
 642 void Widget::Hide() {
 643   native_widget_->Hide();
 644 }
 645
 646 void Widget::ShowInactive() {
 647   // If this gets called with saved_show_state_ == ui::SHOW_STATE_MAXIMIZED,
 648   // call SetBounds()with the restored bounds to set the correct size. This
 649   // normally should not happen, but if it does we should avoid showing unsized
 650   // windows.
 651   if (saved_show_state_ == ui::SHOW_STATE_MAXIMIZED &&
 652       !initial_restored_bounds_.IsEmpty()) {
 653     SetBounds(initial_restored_bounds_);
 654     saved_show_state_ = ui::SHOW_STATE_NORMAL;
 655   }
 656   native_widget_->ShowWithWindowState(ui::SHOW_STATE_INACTIVE);
 657 }
 658
 659 void Widget::Activate() {
 660   native_widget_->Activate();
 661 }
 662
 663 void Widget::Deactivate() {
 664   native_widget_->Deactivate();
 665 }
 666
 667 bool Widget::IsActive() const {
 668   return native_widget_->IsActive();
 669 }
 670
 671 void Widget::DisableInactiveRendering() {
 672   SetInactiveRenderingDisabled(true);
 673 }
 674
 675 void Widget::SetAlwaysOnTop(bool on_top) {
 676   native_widget_->SetAlwaysOnTop(on_top);
 677 }
 678
 679 bool Widget::IsAlwaysOnTop() const {
 680   return native_widget_->IsAlwaysOnTop();
 681 }
 682
 683 void Widget::SetVisibleOnAllWorkspaces(bool always_visible) {
 684   native_widget_->SetVisibleOnAllWorkspaces(always_visible);
 685 }
 686
 687 void Widget::Maximize() {
 688   native_widget_->Maximize();
 689 }
 690
 691 void Widget::Minimize() {
 692   native_widget_->Minimize();
 693 }
 694
 695 void Widget::Restore() {
 696   native_widget_->Restore();
 697 }
 698
 699 bool Widget::IsMaximized() const {
 700   return native_widget_->IsMaximized();
 701 }
 702
 703 bool Widget::IsMinimized() const {
 704   return native_widget_->IsMinimized();
 705 }
 706
 707 void Widget::SetFullscreen(bool fullscreen) {
 708   if (IsFullscreen() == fullscreen)
 709     return;
 710
 711   native_widget_->SetFullscreen(fullscreen);
 712
 713   if (non_client_view_)
 714     non_client_view_->Layout();
 715 }
 716
 717 bool Widget::IsFullscreen() const {
 718   return native_widget_->IsFullscreen();
 719 }
 720
 721 void Widget::SetOpacity(unsigned char opacity) {
 722   native_widget_->SetOpacity(opacity);
 723 }
 724
 725 void Widget::SetUseDragFrame(bool use_drag_frame) {
 726   native_widget_->SetUseDragFrame(use_drag_frame);
 727 }
 728
 729 void Widget::FlashFrame(bool flash) {
 730   native_widget_->FlashFrame(flash);
 731 }
 732
 733 View* Widget::GetRootView() {
 734   return root_view_.get();
 735 }
 736
 737 const View* Widget::GetRootView() const {
 738   return root_view_.get();
 739 }
 740
 741 bool Widget::IsVisible() const {
 742   return native_widget_->IsVisible();
 743 }
 744
 745 ui::ThemeProvider* Widget::GetThemeProvider() const {
 746   const Widget* root_widget = GetTopLevelWidget();
 747   if (root_widget && root_widget != this) {
 748     // Attempt to get the theme provider, and fall back to the default theme
 749     // provider if not found.
 750     ui::ThemeProvider* provider = root_widget->GetThemeProvider();
 751     if (provider)
 752       return provider;
 753
 754     provider = root_widget->default_theme_provider_.get();
 755     if (provider)
 756       return provider;
 757   }
 758   return default_theme_provider_.get();
 759 }
 760
 761 const ui::NativeTheme* Widget::GetNativeTheme() const {
 762   return native_widget_->GetNativeTheme();
 763 }
 764
 765 FocusManager* Widget::GetFocusManager() {
 766   Widget* toplevel_widget = GetTopLevelWidget();
 767   return toplevel_widget ? toplevel_widget->focus_manager_.get() : NULL;
 768 }
 769
 770 const FocusManager* Widget::GetFocusManager() const {
 771   const Widget* toplevel_widget = GetTopLevelWidget();
 772   return toplevel_widget ? toplevel_widget->focus_manager_.get() : NULL;
 773 }
 774
 775 ui::InputMethod* Widget::GetInputMethod() {
 776   if (is_top_level()) {
 777     // Only creates the shared the input method instance on top level widget.
 778     return native_widget_private()->GetInputMethod();
 779   } else {
 780     Widget* toplevel = GetTopLevelWidget();
 781     // If GetTopLevelWidget() returns itself which is not toplevel,
 782     // the widget is detached from toplevel widget.
 783     // TODO(oshima): Fix GetTopLevelWidget() to return NULL
 784     // if there is no toplevel. We probably need to add GetTopMostWidget()
 785     // to replace some use cases.
 786     return (toplevel && toplevel != this) ? toplevel->GetInputMethod()
 787                                           : nullptr;
 788   }
 789 }
 790
 791 void Widget::RunShellDrag(View* view,
 792                           const ui::OSExchangeData& data,
 793                           const gfx::Point& location,
 794                           int operation,
 795                           ui::DragDropTypes::DragEventSource source) {
 796   dragged_view_ = view;
 797   OnDragWillStart();
 798
 799   WidgetDeletionObserver widget_deletion_observer(this);
 800   native_widget_->RunShellDrag(view, data, location, operation, source);
 801
 802   // The widget may be destroyed during the drag operation.
 803   if (!widget_deletion_observer.IsWidgetAlive())
 804     return;
 805
 806   // If the view is removed during the drag operation, dragged_view_ is set to
 807   // NULL.
 808   if (view && dragged_view_ == view) {
 809     dragged_view_ = NULL;
 810     view->OnDragDone();
 811   }
 812   OnDragComplete();
 813 }
 814
 815 void Widget::SchedulePaintInRect(const gfx::Rect& rect) {
 816   native_widget_->SchedulePaintInRect(rect);
 817 }
 818
 819 void Widget::SetCursor(gfx::NativeCursor cursor) {
 820   native_widget_->SetCursor(cursor);
 821 }
 822
 823 bool Widget::IsMouseEventsEnabled() const {
 824   return native_widget_->IsMouseEventsEnabled();
 825 }
 826
 827 void Widget::SetNativeWindowProperty(const char* name, void* value) {
 828   native_widget_->SetNativeWindowProperty(name, value);
 829 }
 830
 831 void* Widget::GetNativeWindowProperty(const char* name) const {
 832   return native_widget_->GetNativeWindowProperty(name);
 833 }
 834
 835 void Widget::UpdateWindowTitle() {
 836   if (!non_client_view_)
 837     return;
 838
 839   // Update the native frame's text. We do this regardless of whether or not
 840   // the native frame is being used, since this also updates the taskbar, etc.
 841   base::string16 window_title = widget_delegate_->GetWindowTitle();
 842   base::i18n::AdjustStringForLocaleDirection(&window_title);
 843   if (!native_widget_->SetWindowTitle(window_title))
 844     return;
 845   non_client_view_->UpdateWindowTitle();
 846
 847   // If the non-client view is rendering its own title, it'll need to relayout
 848   // now and to get a paint update later on.
 849   non_client_view_->Layout();
 850 }
 851
 852 void Widget::UpdateWindowIcon() {
 853   if (non_client_view_)
 854     non_client_view_->UpdateWindowIcon();
 855   native_widget_->SetWindowIcons(widget_delegate_->GetWindowIcon(),
 856                                  widget_delegate_->GetWindowAppIcon());
 857 }
 858
 859 FocusTraversable* Widget::GetFocusTraversable() {
 860   return static_cast<internal::RootView*>(root_view_.get());
 861 }
 862
 863 void Widget::ThemeChanged() {
 864   root_view_->ThemeChanged();
 865 }
 866
 867 void Widget::LocaleChanged() {
 868   root_view_->LocaleChanged();
 869 }
 870
 871 void Widget::DeviceScaleFactorChanged(float device_scale_factor) {
 872   root_view_->DeviceScaleFactorChanged(device_scale_factor);
 873 }
 874
 875 void Widget::SetFocusTraversableParent(FocusTraversable* parent) {
 876   root_view_->SetFocusTraversableParent(parent);
 877 }
 878
 879 void Widget::SetFocusTraversableParentView(View* parent_view) {
 880   root_view_->SetFocusTraversableParentView(parent_view);
 881 }
 882
 883 void Widget::ClearNativeFocus() {
 884   native_widget_->ClearNativeFocus();
 885 }
 886
 887 NonClientFrameView* Widget::CreateNonClientFrameView() {
 888   NonClientFrameView* frame_view =
 889       widget_delegate_->CreateNonClientFrameView(this);
 890   if (!frame_view)
 891     frame_view = native_widget_->CreateNonClientFrameView();
 892   if (!frame_view && ViewsDelegate::GetInstance()) {
 893     frame_view =
 894         ViewsDelegate::GetInstance()->CreateDefaultNonClientFrameView(this);
 895   }
 896   if (frame_view)
 897     return frame_view;
 898
 899   CustomFrameView* custom_frame_view = new CustomFrameView;
 900   custom_frame_view->Init(this);
 901   return custom_frame_view;
 902 }
 903
 904 bool Widget::ShouldUseNativeFrame() const {
 905   if (frame_type_ != FRAME_TYPE_DEFAULT)
 906     return frame_type_ == FRAME_TYPE_FORCE_NATIVE;
 907   return native_widget_->ShouldUseNativeFrame();
 908 }
 909
 910 bool Widget::ShouldWindowContentsBeTransparent() const {
 911   return native_widget_->ShouldWindowContentsBeTransparent();
 912 }
 913
 914 void Widget::DebugToggleFrameType() {
 915   if (frame_type_ == FRAME_TYPE_DEFAULT) {
 916     frame_type_ = ShouldUseNativeFrame() ? FRAME_TYPE_FORCE_CUSTOM :
 917         FRAME_TYPE_FORCE_NATIVE;
 918   } else {
 919     frame_type_ = frame_type_ == FRAME_TYPE_FORCE_CUSTOM ?
 920         FRAME_TYPE_FORCE_NATIVE : FRAME_TYPE_FORCE_CUSTOM;
 921   }
 922   FrameTypeChanged();
 923 }
 924
 925 void Widget::FrameTypeChanged() {
 926   native_widget_->FrameTypeChanged();
 927 }
 928
 929 const ui::Compositor* Widget::GetCompositor() const {
 930   return native_widget_->GetCompositor();
 931 }
 932
 933 const ui::Layer* Widget::GetLayer() const {
 934   return native_widget_->GetLayer();
 935 }
 936
 937 void Widget::ReorderNativeViews() {
 938   native_widget_->ReorderNativeViews();
 939 }
 940
 941 void Widget::UpdateRootLayers() {
 942   // Calculate the layers requires traversing the tree, and since nearly any
 943   // mutation of the tree can trigger this call we delay until absolutely
 944   // necessary.
 945   root_layers_dirty_ = true;
 946 }
 947
 948 const NativeWidget* Widget::native_widget() const {
 949   return native_widget_;
 950 }
 951
 952 NativeWidget* Widget::native_widget() {
 953   return native_widget_;
 954 }
 955
 956 void Widget::SetCapture(View* view) {
 957   if (!native_widget_->HasCapture()) {
 958     native_widget_->SetCapture();
 959
 960     // Early return if setting capture was unsuccessful.
 961     if (!native_widget_->HasCapture())
 962       return;
 963   }
 964
 965   if (internal::NativeWidgetPrivate::IsMouseButtonDown())
 966     is_mouse_button_pressed_ = true;
 967   root_view_->SetMouseHandler(view);
 968 }
 969
 970 void Widget::ReleaseCapture() {
 971   if (native_widget_->HasCapture())
 972     native_widget_->ReleaseCapture();
 973 }
 974
 975 bool Widget::HasCapture() {
 976   return native_widget_->HasCapture();
 977 }
 978
 979 TooltipManager* Widget::GetTooltipManager() {
 980   return native_widget_->GetTooltipManager();
 981 }
 982
 983 const TooltipManager* Widget::GetTooltipManager() const {
 984   return native_widget_->GetTooltipManager();
 985 }
 986
 987 gfx::Rect Widget::GetWorkAreaBoundsInScreen() const {
 988   return native_widget_->GetWorkAreaBoundsInScreen();
 989 }
 990
 991 void Widget::SynthesizeMouseMoveEvent() {
 992   // In screen coordinate.
 993   gfx::Point mouse_location = EventMonitor::GetLastMouseLocation();
 994   if (!GetWindowBoundsInScreen().Contains(mouse_location))
 995       return;
 996
 997   // Convert: screen coordinate -> widget coordinate.
 998   View::ConvertPointFromScreen(root_view_.get(), &mouse_location);
 999   last_mouse_event_was_move_ = false;
1000   ui::MouseEvent mouse_event(ui::ET_MOUSE_MOVED, mouse_location,
1001                              mouse_location, ui::EventTimeForNow(),
1002                              ui::EF_IS_SYNTHESIZED, 0);
1003   root_view_->OnMouseMoved(mouse_event);
1004 }
1005
1006 void Widget::OnRootViewLayout() {
1007   native_widget_->OnRootViewLayout();
1008 }
1009
1010 bool Widget::IsTranslucentWindowOpacitySupported() const {
1011   return native_widget_->IsTranslucentWindowOpacitySupported();
1012 }
1013
1014 void Widget::OnSizeConstraintsChanged() {
1015   native_widget_->OnSizeConstraintsChanged();
1016   non_client_view_->SizeConstraintsChanged();
1017 }
1018
1019 void Widget::OnOwnerClosing() {
1020 }
1021
1022 ////////////////////////////////////////////////////////////////////////////////
1023 // Widget, NativeWidgetDelegate implementation:
1024
1025 bool Widget::IsModal() const {
1026   return widget_delegate_->GetModalType() != ui::MODAL_TYPE_NONE;
1027 }
1028
1029 bool Widget::IsDialogBox() const {
1030   return !!widget_delegate_->AsDialogDelegate();
1031 }
1032
1033 bool Widget::CanActivate() const {
1034   return widget_delegate_->CanActivate();
1035 }
1036
1037 bool Widget::IsInactiveRenderingDisabled() const {
1038   return disable_inactive_rendering_;
1039 }
1040
1041 void Widget::EnableInactiveRendering() {
1042   SetInactiveRenderingDisabled(false);
1043 }
1044
1045 void Widget::OnNativeWidgetActivationChanged(bool active) {
1046   // On windows we may end up here before we've completed initialization (from
1047   // an WM_NCACTIVATE). If that happens the WidgetDelegate likely doesn't know
1048   // the Widget and will crash attempting to access it.
1049   if (!active && native_widget_initialized_)
1050     SaveWindowPlacement();
1051
1052   FOR_EACH_OBSERVER(WidgetObserver, observers_,
1053                     OnWidgetActivationChanged(this, active));
1054
1055   if (IsVisible() && non_client_view())
1056     non_client_view()->frame_view()->SchedulePaint();
1057 }
1058
1059 void Widget::OnNativeFocus() {
1060   WidgetFocusManager::GetInstance()->OnNativeFocusChanged(GetNativeView());
1061 }
1062
1063 void Widget::OnNativeBlur() {
1064   WidgetFocusManager::GetInstance()->OnNativeFocusChanged(nullptr);
1065 }
1066
1067 void Widget::OnNativeWidgetVisibilityChanging(bool visible) {
1068   FOR_EACH_OBSERVER(WidgetObserver, observers_,
1069                     OnWidgetVisibilityChanging(this, visible));
1070 }
1071
1072 void Widget::OnNativeWidgetVisibilityChanged(bool visible) {
1073   View* root = GetRootView();
1074   if (root)
1075     root->PropagateVisibilityNotifications(root, visible);
1076   FOR_EACH_OBSERVER(WidgetObserver, observers_,
1077                     OnWidgetVisibilityChanged(this, visible));
1078   if (GetCompositor() && root && root->layer())
1079     root->layer()->SetVisible(visible);
1080 }
1081
1082 void Widget::OnNativeWidgetCreated(bool desktop_widget) {
1083   if (is_top_level())
1084     focus_manager_.reset(FocusManagerFactory::Create(this, desktop_widget));
1085
1086   native_widget_->InitModalType(widget_delegate_->GetModalType());
1087
1088   FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetCreated(this));
1089 }
1090
1091 void Widget::OnNativeWidgetDestroying() {
1092   // Tell the focus manager (if any) that root_view is being removed
1093   // in case that the focused view is under this root view.
1094   if (GetFocusManager())
1095     GetFocusManager()->ViewRemoved(root_view_.get());
1096   FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetDestroying(this));
1097   if (non_client_view_)
1098     non_client_view_->WindowClosing();
1099   widget_delegate_->WindowClosing();
1100 }
1101
1102 void Widget::OnNativeWidgetDestroyed() {
1103   FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetDestroyed(this));
1104   widget_delegate_->DeleteDelegate();
1105   widget_delegate_ = NULL;
1106   native_widget_destroyed_ = true;
1107 }
1108
1109 gfx::Size Widget::GetMinimumSize() const {
1110   return non_client_view_ ? non_client_view_->GetMinimumSize() : gfx::Size();
1111 }
1112
1113 gfx::Size Widget::GetMaximumSize() const {
1114   return non_client_view_ ? non_client_view_->GetMaximumSize() : gfx::Size();
1115 }
1116
1117 void Widget::OnNativeWidgetMove() {
1118   widget_delegate_->OnWidgetMove();
1119   NotifyCaretBoundsChanged(GetInputMethod());
1120
1121   FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetBoundsChanged(
1122     this,
1123     GetWindowBoundsInScreen()));
1124 }
1125
1126 void Widget::OnNativeWidgetSizeChanged(const gfx::Size& new_size) {
1127   View* root = GetRootView();
1128   if (root)
1129     root->SetSize(new_size);
1130
1131   NotifyCaretBoundsChanged(GetInputMethod());
1132   SaveWindowPlacementIfInitialized();
1133
1134   FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetBoundsChanged(
1135     this,
1136     GetWindowBoundsInScreen()));
1137 }
1138
1139 void Widget::OnNativeWidgetWindowShowStateChanged() {
1140   SaveWindowPlacementIfInitialized();
1141 }
1142
1143 void Widget::OnNativeWidgetBeginUserBoundsChange() {
1144   widget_delegate_->OnWindowBeginUserBoundsChange();
1145 }
1146
1147 void Widget::OnNativeWidgetEndUserBoundsChange() {
1148   widget_delegate_->OnWindowEndUserBoundsChange();
1149 }
1150
1151 bool Widget::HasFocusManager() const {
1152   return !!focus_manager_.get();
1153 }
1154
1155 void Widget::OnNativeWidgetPaint(const ui::PaintContext& context) {
1156   // On Linux Aura, we can get here during Init() because of the
1157   // SetInitialBounds call.
1158   if (!native_widget_initialized_)
1159     return;
1160   GetRootView()->Paint(context);
1161 }
1162
1163 int Widget::GetNonClientComponent(const gfx::Point& point) {
1164   int component = non_client_view_ ?
1165       non_client_view_->NonClientHitTest(point) :
1166       HTNOWHERE;
1167
1168   if (movement_disabled_ && (component == HTCAPTION || component == HTSYSMENU))
1169     return HTNOWHERE;
1170
1171   return component;
1172 }
1173
1174 void Widget::OnKeyEvent(ui::KeyEvent* event) {
1175   SendEventToProcessor(event);
1176 }
1177
1178 // TODO(tdanderson): We should not be calling the OnMouse*() functions on
1179 //                   RootView from anywhere in Widget. Use
1180 //                   SendEventToProcessor() instead. See crbug.com/348087.
1181 void Widget::OnMouseEvent(ui::MouseEvent* event) {
1182   View* root_view = GetRootView();
1183   switch (event->type()) {
1184     case ui::ET_MOUSE_PRESSED: {
1185       last_mouse_event_was_move_ = false;
1186
1187       // We may get deleted by the time we return from OnMousePressed. So we
1188       // use an observer to make sure we are still alive.
1189       WidgetDeletionObserver widget_deletion_observer(this);
1190
1191       // Make sure we're still visible before we attempt capture as the mouse
1192       // press processing may have made the window hide (as happens with menus).
1193
1194       // It is possible for a View to show a context menu on mouse-press. Since
1195       // the menu does a capture and starts a nested message-loop, the release
1196       // would go to the menu. The next click (i.e. both mouse-press and release
1197       // events) also go to the menu. The menu (and the nested message-loop)
1198       // gets closed after this second release event. The code then resumes from
1199       // here. So make sure that the mouse-button is still down before doing a
1200       // capture.
1201       if (root_view && root_view->OnMousePressed(*event) &&
1202           widget_deletion_observer.IsWidgetAlive() && IsVisible() &&
1203           internal::NativeWidgetPrivate::IsMouseButtonDown()) {
1204         is_mouse_button_pressed_ = true;
1205         if (!native_widget_->HasCapture())
1206           native_widget_->SetCapture();
1207         event->SetHandled();
1208       }
1209       return;
1210     }
1211
1212     case ui::ET_MOUSE_RELEASED:
1213       last_mouse_event_was_move_ = false;
1214       is_mouse_button_pressed_ = false;
1215       // Release capture first, to avoid confusion if OnMouseReleased blocks.
1216       if (auto_release_capture_ && native_widget_->HasCapture()) {
1217         base::AutoReset<bool> resetter(&ignore_capture_loss_, true);
1218         native_widget_->ReleaseCapture();
1219       }
1220       if (root_view)
1221         root_view->OnMouseReleased(*event);
1222       if ((event->flags() & ui::EF_IS_NON_CLIENT) == 0)
1223         event->SetHandled();
1224       return;
1225
1226     case ui::ET_MOUSE_MOVED:
1227     case ui::ET_MOUSE_DRAGGED:
1228       if (native_widget_->HasCapture() && is_mouse_button_pressed_) {
1229         last_mouse_event_was_move_ = false;
1230         if (root_view)
1231           root_view->OnMouseDragged(*event);
1232       } else if (!last_mouse_event_was_move_ ||
1233                  last_mouse_event_position_ != event->location()) {
1234         last_mouse_event_position_ = event->location();
1235         last_mouse_event_was_move_ = true;
1236         if (root_view)
1237           root_view->OnMouseMoved(*event);
1238       }
1239       return;
1240
1241     case ui::ET_MOUSE_EXITED:
1242       last_mouse_event_was_move_ = false;
1243       if (root_view)
1244         root_view->OnMouseExited(*event);
1245       return;
1246
1247     case ui::ET_MOUSEWHEEL:
1248       if (root_view && root_view->OnMouseWheel(
1249           static_cast<const ui::MouseWheelEvent&>(*event)))
1250         event->SetHandled();
1251       return;
1252
1253     default:
1254       return;
1255   }
1256 }
1257
1258 void Widget::OnMouseCaptureLost() {
1259   if (ignore_capture_loss_)
1260     return;
1261
1262   View* root_view = GetRootView();
1263   if (root_view)
1264     root_view->OnMouseCaptureLost();
1265   is_mouse_button_pressed_ = false;
1266 }
1267
1268 void Widget::OnScrollEvent(ui::ScrollEvent* event) {
1269   ui::ScrollEvent event_copy(*event);
1270   SendEventToProcessor(&event_copy);
1271
1272   // Convert unhandled ui::ET_SCROLL events into ui::ET_MOUSEWHEEL events.
1273   if (!event_copy.handled() && event_copy.type() == ui::ET_SCROLL) {
1274     ui::MouseWheelEvent wheel(*event);
1275     OnMouseEvent(&wheel);
1276   }
1277 }
1278
1279 void Widget::OnGestureEvent(ui::GestureEvent* event) {
1280   // We explicitly do not capture here. Not capturing enables multiple widgets
1281   // to get tap events at the same time. Views (such as tab dragging) may
1282   // explicitly capture.
1283   SendEventToProcessor(event);
1284 }
1285
1286 bool Widget::ExecuteCommand(int command_id) {
1287   return widget_delegate_->ExecuteWindowsCommand(command_id);
1288 }
1289
1290 const std::vector<ui::Layer*>& Widget::GetRootLayers() {
1291   if (root_layers_dirty_) {
1292     root_layers_dirty_ = false;
1293     root_layers_.clear();
1294     BuildRootLayers(GetRootView(), &root_layers_);
1295   }
1296   return root_layers_;
1297 }
1298
1299 bool Widget::HasHitTestMask() const {
1300   return widget_delegate_->WidgetHasHitTestMask();
1301 }
1302
1303 void Widget::GetHitTestMask(gfx::Path* mask) const {
1304   DCHECK(mask);
1305   widget_delegate_->GetWidgetHitTestMask(mask);
1306 }
1307
1308 Widget* Widget::AsWidget() {
1309   return this;
1310 }
1311
1312 const Widget* Widget::AsWidget() const {
1313   return this;
1314 }
1315
1316 bool Widget::SetInitialFocus(ui::WindowShowState show_state) {
1317   View* v = widget_delegate_->GetInitiallyFocusedView();
1318   if (!focus_on_creation_ || show_state == ui::SHOW_STATE_INACTIVE ||
1319       show_state == ui::SHOW_STATE_MINIMIZED) {
1320     // If not focusing the window now, tell the focus manager which view to
1321     // focus when the window is restored.
1322     if (v)
1323       focus_manager_->SetStoredFocusView(v);
1324     return true;
1325   }
1326   if (v)
1327     v->RequestFocus();
1328   return !!v;
1329 }
1330
1331 ////////////////////////////////////////////////////////////////////////////////
1332 // Widget, ui::EventSource implementation:
1333 ui::EventProcessor* Widget::GetEventProcessor() {
1334   return root_view_.get();
1335 }
1336
1337 ////////////////////////////////////////////////////////////////////////////////
1338 // Widget, FocusTraversable implementation:
1339
1340 FocusSearch* Widget::GetFocusSearch() {
1341   return root_view_->GetFocusSearch();
1342 }
1343
1344 FocusTraversable* Widget::GetFocusTraversableParent() {
1345   // We are a proxy to the root view, so we should be bypassed when traversing
1346   // up and as a result this should not be called.
1347   NOTREACHED();
1348   return NULL;
1349 }
1350
1351 View* Widget::GetFocusTraversableParentView() {
1352   // We are a proxy to the root view, so we should be bypassed when traversing
1353   // up and as a result this should not be called.
1354   NOTREACHED();
1355   return NULL;
1356 }
1357
1358 ////////////////////////////////////////////////////////////////////////////////
1359 // Widget, ui::NativeThemeObserver implementation:
1360
1361 void Widget::OnNativeThemeUpdated(ui::NativeTheme* observed_theme) {
1362   DCHECK(observer_manager_.IsObserving(observed_theme));
1363
1364   ui::NativeTheme* current_native_theme = GetNativeTheme();
1365   if (!observer_manager_.IsObserving(current_native_theme)) {
1366     observer_manager_.RemoveAll();
1367     observer_manager_.Add(current_native_theme);
1368   }
1369
1370   root_view_->PropagateNativeThemeChanged(current_native_theme);
1371 }
1372
1373 ////////////////////////////////////////////////////////////////////////////////
1374 // Widget, protected:
1375
1376 internal::RootView* Widget::CreateRootView() {
1377   return new internal::RootView(this);
1378 }
1379
1380 void Widget::DestroyRootView() {
1381   non_client_view_ = NULL;
1382   root_view_.reset();
1383 }
1384
1385 void Widget::OnDragWillStart() {
1386 }
1387
1388 void Widget::OnDragComplete() {
1389 }
1390
1391 ////////////////////////////////////////////////////////////////////////////////
1392 // Widget, private:
1393
1394 void Widget::SetInactiveRenderingDisabled(bool value) {
1395   if (value == disable_inactive_rendering_)
1396     return;
1397
1398   disable_inactive_rendering_ = value;
1399   if (non_client_view_)
1400     non_client_view_->SetInactiveRenderingDisabled(value);
1401 }
1402
1403 void Widget::SaveWindowPlacement() {
1404   // The window delegate does the actual saving for us. It seems like (judging
1405   // by go/crash) that in some circumstances we can end up here after
1406   // WM_DESTROY, at which point the window delegate is likely gone. So just
1407   // bail.
1408   if (!widget_delegate_)
1409     return;
1410
1411   ui::WindowShowState show_state = ui::SHOW_STATE_NORMAL;
1412   gfx::Rect bounds;
1413   native_widget_->GetWindowPlacement(&bounds, &show_state);
1414   widget_delegate_->SaveWindowPlacement(bounds, show_state);
1415 }
1416
1417 void Widget::SaveWindowPlacementIfInitialized() {
1418   if (native_widget_initialized_)
1419     SaveWindowPlacement();
1420 }
1421
1422 void Widget::SetInitialBounds(const gfx::Rect& bounds) {
1423   if (!non_client_view_)
1424     return;
1425
1426   gfx::Rect saved_bounds;
1427   if (GetSavedWindowPlacement(&saved_bounds, &saved_show_state_)) {
1428     if (saved_show_state_ == ui::SHOW_STATE_MAXIMIZED) {
1429       // If we're going to maximize, wait until Show is invoked to set the
1430       // bounds. That way we avoid a noticeable resize.
1431       initial_restored_bounds_ = saved_bounds;
1432     } else if (!saved_bounds.IsEmpty()) {
1433       // If the saved bounds are valid, use them.
1434       SetBounds(saved_bounds);
1435     }
1436   } else {
1437     if (bounds.IsEmpty()) {
1438       // No initial bounds supplied, so size the window to its content and
1439       // center over its parent.
1440       native_widget_->CenterWindow(non_client_view_->GetPreferredSize());
1441     } else {
1442       // Use the supplied initial bounds.
1443       SetBoundsConstrained(bounds);
1444     }
1445   }
1446 }
1447
1448 void Widget::SetInitialBoundsForFramelessWindow(const gfx::Rect& bounds) {
1449   if (bounds.IsEmpty()) {
1450     View* contents_view = GetContentsView();
1451     DCHECK(contents_view);
1452     // No initial bounds supplied, so size the window to its content and
1453     // center over its parent if preferred size is provided.
1454     gfx::Size size = contents_view->GetPreferredSize();
1455     if (!size.IsEmpty())
1456       native_widget_->CenterWindow(size);
1457   } else {
1458     // Use the supplied initial bounds.
1459     SetBoundsConstrained(bounds);
1460   }
1461 }
1462
1463 bool Widget::GetSavedWindowPlacement(gfx::Rect* bounds,
1464                                      ui::WindowShowState* show_state) {
1465   // First we obtain the window's saved show-style and store it. We need to do
1466   // this here, rather than in Show() because by the time Show() is called,
1467   // the window's size will have been reset (below) and the saved maximized
1468   // state will have been lost. Sadly there's no way to tell on Windows when
1469   // a window is restored from maximized state, so we can't more accurately
1470   // track maximized state independently of sizing information.
1471
1472   // Restore the window's placement from the controller.
1473   if (widget_delegate_->GetSavedWindowPlacement(this, bounds, show_state)) {
1474     if (!widget_delegate_->ShouldRestoreWindowSize()) {
1475       bounds->set_size(non_client_view_->GetPreferredSize());
1476     } else {
1477       gfx::Size minimum_size = GetMinimumSize();
1478       // Make sure the bounds are at least the minimum size.
1479       if (bounds->width() < minimum_size.width())
1480         bounds->set_width(minimum_size.width());
1481
1482       if (bounds->height() < minimum_size.height())
1483         bounds->set_height(minimum_size.height());
1484     }
1485     return true;
1486   }
1487   return false;
1488 }
1489
1490 namespace internal {
1491
1492 ////////////////////////////////////////////////////////////////////////////////
1493 // internal::NativeWidgetPrivate, NativeWidget implementation:
1494
1495 internal::NativeWidgetPrivate* NativeWidgetPrivate::AsNativeWidgetPrivate() {
1496   return this;
1497 }
1498
1499 }  // namespace internal
1500 }  // namespace views