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      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/debug/trace_event.h"
      8 #include "base/logging.h"
      9 #include "base/message_loop/message_loop.h"
     10 #include "base/strings/utf_string_conversions.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/l10n/l10n_font_util.h"
     15 #include "ui/base/resource/resource_bundle.h"
     16 #include "ui/compositor/compositor.h"
     17 #include "ui/compositor/layer.h"
     18 #include "ui/events/event.h"
     19 #include "ui/gfx/image/image_skia.h"
     20 #include "ui/gfx/screen.h"
     21 #include "ui/views/controls/menu/menu_controller.h"
     22 #include "ui/views/focus/focus_manager.h"
     23 #include "ui/views/focus/focus_manager_factory.h"
     24 #include "ui/views/focus/view_storage.h"
     25 #include "ui/views/focus/widget_focus_manager.h"
     26 #include "ui/views/ime/input_method.h"
     27 #include "ui/views/views_delegate.h"
     28 #include "ui/views/widget/native_widget_private.h"
     29 #include "ui/views/widget/root_view.h"
     30 #include "ui/views/widget/tooltip_manager.h"
     31 #include "ui/views/widget/widget_delegate.h"
     32 #include "ui/views/widget/widget_deletion_observer.h"
     33 #include "ui/views/widget/widget_observer.h"
     34 #include "ui/views/widget/widget_removals_observer.h"
     35 #include "ui/views/window/custom_frame_view.h"
     36 #include "ui/views/window/dialog_delegate.h"
     37 
     38 namespace views {
     39 
     40 namespace {
     41 
     42 // If |view| has a layer the layer is added to |layers|. Else this recurses
     43 // through the children. This is used to build a list of the layers created by
     44 // views that are direct children of the Widgets layer.
     45 void BuildRootLayers(View* view, std::vector<ui::Layer*>* layers) {
     46   if (view->layer()) {
     47     layers->push_back(view->layer());
     48   } else {
     49     for (int i = 0; i < view->child_count(); ++i)
     50       BuildRootLayers(view->child_at(i), layers);
     51   }
     52 }
     53 
     54 // Create a native widget implementation.
     55 // First, use the supplied one if non-NULL.
     56 // Finally, make a default one.
     57 NativeWidget* CreateNativeWidget(NativeWidget* native_widget,
     58                                  internal::NativeWidgetDelegate* delegate) {
     59   if (!native_widget) {
     60     native_widget =
     61         internal::NativeWidgetPrivate::CreateNativeWidget(delegate);
     62   }
     63   return native_widget;
     64 }
     65 
     66 }  // namespace
     67 
     68 // A default implementation of WidgetDelegate, used by Widget when no
     69 // WidgetDelegate is supplied.
     70 class DefaultWidgetDelegate : public WidgetDelegate {
     71  public:
     72   explicit DefaultWidgetDelegate(Widget* widget) : widget_(widget) {
     73   }
     74   virtual ~DefaultWidgetDelegate() {}
     75 
     76   // Overridden from WidgetDelegate:
     77   virtual void DeleteDelegate() OVERRIDE {
     78     delete this;
     79   }
     80   virtual Widget* GetWidget() OVERRIDE {
     81     return widget_;
     82   }
     83   virtual const Widget* GetWidget() const OVERRIDE {
     84     return widget_;
     85   }
     86   virtual bool ShouldAdvanceFocusToTopLevelWidget() const OVERRIDE {
     87     // In most situations where a Widget is used without a delegate the Widget
     88     // is used as a container, so that we want focus to advance to the top-level
     89     // widget. A good example of this is the find bar.
     90     return true;
     91   }
     92 
     93  private:
     94   Widget* widget_;
     95 
     96   DISALLOW_COPY_AND_ASSIGN(DefaultWidgetDelegate);
     97 };
     98 
     99 ////////////////////////////////////////////////////////////////////////////////
    100 // Widget, InitParams:
    101 
    102 Widget::InitParams::InitParams()
    103     : type(TYPE_WINDOW),
    104       delegate(NULL),
    105       child(false),
    106       opacity(INFER_OPACITY),
    107       accept_events(true),
    108       activatable(ACTIVATABLE_DEFAULT),
    109       keep_on_top(false),
    110       visible_on_all_workspaces(false),
    111       ownership(NATIVE_WIDGET_OWNS_WIDGET),
    112       mirror_origin_in_rtl(false),
    113       shadow_type(SHADOW_TYPE_DEFAULT),
    114       remove_standard_frame(false),
    115       use_system_default_icon(false),
    116       show_state(ui::SHOW_STATE_DEFAULT),
    117       double_buffer(false),
    118       parent(NULL),
    119       native_widget(NULL),
    120       desktop_window_tree_host(NULL),
    121       layer_type(aura::WINDOW_LAYER_TEXTURED),
    122       context(NULL),
    123       force_show_in_taskbar(false) {
    124 }
    125 
    126 Widget::InitParams::InitParams(Type type)
    127     : type(type),
    128       delegate(NULL),
    129       child(false),
    130       opacity(INFER_OPACITY),
    131       accept_events(true),
    132       activatable(ACTIVATABLE_DEFAULT),
    133       keep_on_top(type == TYPE_MENU || type == TYPE_DRAG),
    134       visible_on_all_workspaces(false),
    135       ownership(NATIVE_WIDGET_OWNS_WIDGET),
    136       mirror_origin_in_rtl(false),
    137       shadow_type(SHADOW_TYPE_DEFAULT),
    138       remove_standard_frame(false),
    139       use_system_default_icon(false),
    140       show_state(ui::SHOW_STATE_DEFAULT),
    141       double_buffer(false),
    142       parent(NULL),
    143       native_widget(NULL),
    144       desktop_window_tree_host(NULL),
    145       layer_type(aura::WINDOW_LAYER_TEXTURED),
    146       context(NULL),
    147       force_show_in_taskbar(false) {
    148 }
    149 
    150 Widget::InitParams::~InitParams() {
    151 }
    152 
    153 ////////////////////////////////////////////////////////////////////////////////
    154 // Widget, public:
    155 
    156 Widget::Widget()
    157     : native_widget_(NULL),
    158       widget_delegate_(NULL),
    159       non_client_view_(NULL),
    160       dragged_view_(NULL),
    161       ownership_(InitParams::NATIVE_WIDGET_OWNS_WIDGET),
    162       is_secondary_widget_(true),
    163       frame_type_(FRAME_TYPE_DEFAULT),
    164       disable_inactive_rendering_(false),
    165       widget_closed_(false),
    166       saved_show_state_(ui::SHOW_STATE_DEFAULT),
    167       focus_on_creation_(true),
    168       is_top_level_(false),
    169       native_widget_initialized_(false),
    170       native_widget_destroyed_(false),
    171       is_mouse_button_pressed_(false),
    172       is_touch_down_(false),
    173       last_mouse_event_was_move_(false),
    174       auto_release_capture_(true),
    175       root_layers_dirty_(false),
    176       movement_disabled_(false),
    177       observer_manager_(this) {
    178 }
    179 
    180 Widget::~Widget() {
    181   DestroyRootView();
    182   if (ownership_ == InitParams::WIDGET_OWNS_NATIVE_WIDGET) {
    183     delete native_widget_;
    184   } else {
    185     DCHECK(native_widget_destroyed_)
    186         << "Destroying a widget with a live native widget. "
    187         << "Widget probably should use WIDGET_OWNS_NATIVE_WIDGET ownership.";
    188   }
    189 }
    190 
    191 // static
    192 Widget* Widget::CreateWindow(WidgetDelegate* delegate) {
    193   return CreateWindowWithBounds(delegate, gfx::Rect());
    194 }
    195 
    196 // static
    197 Widget* Widget::CreateWindowWithBounds(WidgetDelegate* delegate,
    198                                        const gfx::Rect& bounds) {
    199   Widget* widget = new Widget;
    200   Widget::InitParams params;
    201   params.bounds = bounds;
    202   params.delegate = delegate;
    203   widget->Init(params);
    204   return widget;
    205 }
    206 
    207 // static
    208 Widget* Widget::CreateWindowWithParent(WidgetDelegate* delegate,
    209                                        gfx::NativeView parent) {
    210   return CreateWindowWithParentAndBounds(delegate, parent, gfx::Rect());
    211 }
    212 
    213 // static
    214 Widget* Widget::CreateWindowWithParentAndBounds(WidgetDelegate* delegate,
    215                                                 gfx::NativeView parent,
    216                                                 const gfx::Rect& bounds) {
    217   Widget* widget = new Widget;
    218   Widget::InitParams params;
    219   params.delegate = delegate;
    220   params.parent = parent;
    221   params.bounds = bounds;
    222   widget->Init(params);
    223   return widget;
    224 }
    225 
    226 // static
    227 Widget* Widget::CreateWindowWithContext(WidgetDelegate* delegate,
    228                                         gfx::NativeView context) {
    229   return CreateWindowWithContextAndBounds(delegate, context, gfx::Rect());
    230 }
    231 
    232 // static
    233 Widget* Widget::CreateWindowWithContextAndBounds(WidgetDelegate* delegate,
    234                                                  gfx::NativeView context,
    235                                                  const gfx::Rect& bounds) {
    236   Widget* widget = new Widget;
    237   Widget::InitParams params;
    238   params.delegate = delegate;
    239   params.context = context;
    240   params.bounds = bounds;
    241   widget->Init(params);
    242   return widget;
    243 }
    244 
    245 // static
    246 Widget* Widget::GetWidgetForNativeView(gfx::NativeView native_view) {
    247   internal::NativeWidgetPrivate* native_widget =
    248       internal::NativeWidgetPrivate::GetNativeWidgetForNativeView(native_view);
    249   return native_widget ? native_widget->GetWidget() : NULL;
    250 }
    251 
    252 // static
    253 Widget* Widget::GetWidgetForNativeWindow(gfx::NativeWindow native_window) {
    254   internal::NativeWidgetPrivate* native_widget =
    255       internal::NativeWidgetPrivate::GetNativeWidgetForNativeWindow(
    256           native_window);
    257   return native_widget ? native_widget->GetWidget() : NULL;
    258 }
    259 
    260 // static
    261 Widget* Widget::GetTopLevelWidgetForNativeView(gfx::NativeView native_view) {
    262   internal::NativeWidgetPrivate* native_widget =
    263       internal::NativeWidgetPrivate::GetTopLevelNativeWidget(native_view);
    264   return native_widget ? native_widget->GetWidget() : NULL;
    265 }
    266 
    267 
    268 // static
    269 void Widget::GetAllChildWidgets(gfx::NativeView native_view,
    270                                 Widgets* children) {
    271   internal::NativeWidgetPrivate::GetAllChildWidgets(native_view, children);
    272 }
    273 
    274 // static
    275 void Widget::GetAllOwnedWidgets(gfx::NativeView native_view,
    276                                 Widgets* owned) {
    277   internal::NativeWidgetPrivate::GetAllOwnedWidgets(native_view, owned);
    278 }
    279 
    280 // static
    281 void Widget::ReparentNativeView(gfx::NativeView native_view,
    282                                 gfx::NativeView new_parent) {
    283   internal::NativeWidgetPrivate::ReparentNativeView(native_view, new_parent);
    284 }
    285 
    286 // static
    287 int Widget::GetLocalizedContentsWidth(int col_resource_id) {
    288   return ui::GetLocalizedContentsWidthForFont(col_resource_id,
    289       ResourceBundle::GetSharedInstance().GetFont(ResourceBundle::BaseFont));
    290 }
    291 
    292 // static
    293 int Widget::GetLocalizedContentsHeight(int row_resource_id) {
    294   return ui::GetLocalizedContentsHeightForFont(row_resource_id,
    295       ResourceBundle::GetSharedInstance().GetFont(ResourceBundle::BaseFont));
    296 }
    297 
    298 // static
    299 gfx::Size Widget::GetLocalizedContentsSize(int col_resource_id,
    300                                            int row_resource_id) {
    301   return gfx::Size(GetLocalizedContentsWidth(col_resource_id),
    302                    GetLocalizedContentsHeight(row_resource_id));
    303 }
    304 
    305 // static
    306 bool Widget::RequiresNonClientView(InitParams::Type type) {
    307   return type == InitParams::TYPE_WINDOW ||
    308          type == InitParams::TYPE_PANEL ||
    309          type == InitParams::TYPE_BUBBLE;
    310 }
    311 
    312 void Widget::Init(const InitParams& in_params) {
    313   TRACE_EVENT0("views", "Widget::Init");
    314   InitParams params = in_params;
    315 
    316   params.child |= (params.type == InitParams::TYPE_CONTROL);
    317   is_top_level_ = !params.child;
    318 
    319   if (params.opacity == views::Widget::InitParams::INFER_OPACITY &&
    320       params.type != views::Widget::InitParams::TYPE_WINDOW &&
    321       params.type != views::Widget::InitParams::TYPE_PANEL)
    322     params.opacity = views::Widget::InitParams::OPAQUE_WINDOW;
    323 
    324   if (ViewsDelegate::views_delegate)
    325     ViewsDelegate::views_delegate->OnBeforeWidgetInit(&params, this);
    326 
    327   if (params.opacity == views::Widget::InitParams::INFER_OPACITY)
    328     params.opacity = views::Widget::InitParams::OPAQUE_WINDOW;
    329 
    330   bool can_activate = false;
    331   if (params.activatable != InitParams::ACTIVATABLE_DEFAULT) {
    332     can_activate = (params.activatable == InitParams::ACTIVATABLE_YES);
    333   } else if (params.type != InitParams::TYPE_CONTROL &&
    334              params.type != InitParams::TYPE_POPUP &&
    335              params.type != InitParams::TYPE_MENU &&
    336              params.type != InitParams::TYPE_TOOLTIP &&
    337              params.type != InitParams::TYPE_DRAG) {
    338     can_activate = true;
    339     params.activatable = InitParams::ACTIVATABLE_YES;
    340   } else {
    341     can_activate = false;
    342     params.activatable = InitParams::ACTIVATABLE_NO;
    343   }
    344 
    345   widget_delegate_ = params.delegate ?
    346       params.delegate : new DefaultWidgetDelegate(this);
    347   widget_delegate_->set_can_activate(can_activate);
    348 
    349   ownership_ = params.ownership;
    350   native_widget_ = CreateNativeWidget(params.native_widget, this)->
    351                    AsNativeWidgetPrivate();
    352   root_view_.reset(CreateRootView());
    353   default_theme_provider_.reset(new ui::DefaultThemeProvider);
    354   if (params.type == InitParams::TYPE_MENU) {
    355     is_mouse_button_pressed_ =
    356         internal::NativeWidgetPrivate::IsMouseButtonDown();
    357   }
    358   native_widget_->InitNativeWidget(params);
    359   if (RequiresNonClientView(params.type)) {
    360     non_client_view_ = new NonClientView;
    361     non_client_view_->SetFrameView(CreateNonClientFrameView());
    362     // Create the ClientView, add it to the NonClientView and add the
    363     // NonClientView to the RootView. This will cause everything to be parented.
    364     non_client_view_->set_client_view(widget_delegate_->CreateClientView(this));
    365     non_client_view_->SetOverlayView(widget_delegate_->CreateOverlayView());
    366     SetContentsView(non_client_view_);
    367     // Initialize the window's title before setting the window's initial bounds;
    368     // the frame view's preferred height may depend on the presence of a title.
    369     UpdateWindowTitle();
    370     non_client_view_->ResetWindowControls();
    371     SetInitialBounds(params.bounds);
    372     if (params.show_state == ui::SHOW_STATE_MAXIMIZED)
    373       Maximize();
    374     else if (params.show_state == ui::SHOW_STATE_MINIMIZED)
    375       Minimize();
    376   } else if (params.delegate) {
    377     SetContentsView(params.delegate->GetContentsView());
    378     SetInitialBoundsForFramelessWindow(params.bounds);
    379   }
    380   // This must come after SetContentsView() or it might not be able to find
    381   // the correct NativeTheme (on Linux). See http://crbug.com/384492
    382   observer_manager_.Add(GetNativeTheme());
    383   native_widget_initialized_ = true;
    384 }
    385 
    386 // Unconverted methods (see header) --------------------------------------------
    387 
    388 gfx::NativeView Widget::GetNativeView() const {
    389   return native_widget_->GetNativeView();
    390 }
    391 
    392 gfx::NativeWindow Widget::GetNativeWindow() const {
    393   return native_widget_->GetNativeWindow();
    394 }
    395 
    396 void Widget::AddObserver(WidgetObserver* observer) {
    397   observers_.AddObserver(observer);
    398 }
    399 
    400 void Widget::RemoveObserver(WidgetObserver* observer) {
    401   observers_.RemoveObserver(observer);
    402 }
    403 
    404 bool Widget::HasObserver(WidgetObserver* observer) {
    405   return observers_.HasObserver(observer);
    406 }
    407 
    408 void Widget::AddRemovalsObserver(WidgetRemovalsObserver* observer) {
    409   removals_observers_.AddObserver(observer);
    410 }
    411 
    412 void Widget::RemoveRemovalsObserver(WidgetRemovalsObserver* observer) {
    413   removals_observers_.RemoveObserver(observer);
    414 }
    415 
    416 bool Widget::HasRemovalsObserver(WidgetRemovalsObserver* observer) {
    417   return removals_observers_.HasObserver(observer);
    418 }
    419 
    420 bool Widget::GetAccelerator(int cmd_id, ui::Accelerator* accelerator) const {
    421   return false;
    422 }
    423 
    424 void Widget::ViewHierarchyChanged(
    425     const View::ViewHierarchyChangedDetails& details) {
    426   if (!details.is_add) {
    427     if (details.child == dragged_view_)
    428       dragged_view_ = NULL;
    429     FocusManager* focus_manager = GetFocusManager();
    430     if (focus_manager)
    431       focus_manager->ViewRemoved(details.child);
    432     ViewStorage::GetInstance()->ViewRemoved(details.child);
    433     native_widget_->ViewRemoved(details.child);
    434   }
    435 }
    436 
    437 void Widget::NotifyNativeViewHierarchyWillChange() {
    438   FocusManager* focus_manager = GetFocusManager();
    439   // We are being removed from a window hierarchy.  Treat this as
    440   // the root_view_ being removed.
    441   if (focus_manager)
    442     focus_manager->ViewRemoved(root_view_.get());
    443 }
    444 
    445 void Widget::NotifyNativeViewHierarchyChanged() {
    446   root_view_->NotifyNativeViewHierarchyChanged();
    447 }
    448 
    449 void Widget::NotifyWillRemoveView(View* view) {
    450     FOR_EACH_OBSERVER(WidgetRemovalsObserver,
    451                       removals_observers_,
    452                       OnWillRemoveView(this, view));
    453 }
    454 
    455 // Converted methods (see header) ----------------------------------------------
    456 
    457 Widget* Widget::GetTopLevelWidget() {
    458   return const_cast<Widget*>(
    459       static_cast<const Widget*>(this)->GetTopLevelWidget());
    460 }
    461 
    462 const Widget* Widget::GetTopLevelWidget() const {
    463   // GetTopLevelNativeWidget doesn't work during destruction because
    464   // property is gone after gobject gets deleted. Short circuit here
    465   // for toplevel so that InputMethod can remove itself from
    466   // focus manager.
    467   return is_top_level() ? this : native_widget_->GetTopLevelWidget();
    468 }
    469 
    470 void Widget::SetContentsView(View* view) {
    471   // Do not SetContentsView() again if it is already set to the same view.
    472   if (view == GetContentsView())
    473     return;
    474   root_view_->SetContentsView(view);
    475   if (non_client_view_ != view) {
    476     // |non_client_view_| can only be non-NULL here if RequiresNonClientView()
    477     // was true when the widget was initialized. Creating widgets with non
    478     // client views and then setting the contents view can cause subtle
    479     // problems on Windows, where the native widget thinks there is still a
    480     // |non_client_view_|. If you get this error, either use a different type
    481     // when initializing the widget, or don't call SetContentsView().
    482     DCHECK(!non_client_view_);
    483     non_client_view_ = NULL;
    484   }
    485 }
    486 
    487 View* Widget::GetContentsView() {
    488   return root_view_->GetContentsView();
    489 }
    490 
    491 gfx::Rect Widget::GetWindowBoundsInScreen() const {
    492   return native_widget_->GetWindowBoundsInScreen();
    493 }
    494 
    495 gfx::Rect Widget::GetClientAreaBoundsInScreen() const {
    496   return native_widget_->GetClientAreaBoundsInScreen();
    497 }
    498 
    499 gfx::Rect Widget::GetRestoredBounds() const {
    500   return native_widget_->GetRestoredBounds();
    501 }
    502 
    503 void Widget::SetBounds(const gfx::Rect& bounds) {
    504   native_widget_->SetBounds(bounds);
    505 }
    506 
    507 void Widget::SetSize(const gfx::Size& size) {
    508   native_widget_->SetSize(size);
    509 }
    510 
    511 void Widget::CenterWindow(const gfx::Size& size) {
    512   native_widget_->CenterWindow(size);
    513 }
    514 
    515 void Widget::SetBoundsConstrained(const gfx::Rect& bounds) {
    516   gfx::Rect work_area =
    517       gfx::Screen::GetScreenFor(GetNativeView())->GetDisplayNearestPoint(
    518           bounds.origin()).work_area();
    519   if (work_area.IsEmpty()) {
    520     SetBounds(bounds);
    521   } else {
    522     // Inset the work area slightly.
    523     work_area.Inset(10, 10, 10, 10);
    524     work_area.AdjustToFit(bounds);
    525     SetBounds(work_area);
    526   }
    527 }
    528 
    529 void Widget::SetVisibilityChangedAnimationsEnabled(bool value) {
    530   native_widget_->SetVisibilityChangedAnimationsEnabled(value);
    531 }
    532 
    533 Widget::MoveLoopResult Widget::RunMoveLoop(
    534     const gfx::Vector2d& drag_offset,
    535     MoveLoopSource source,
    536     MoveLoopEscapeBehavior escape_behavior) {
    537   return native_widget_->RunMoveLoop(drag_offset, source, escape_behavior);
    538 }
    539 
    540 void Widget::EndMoveLoop() {
    541   native_widget_->EndMoveLoop();
    542 }
    543 
    544 void Widget::StackAboveWidget(Widget* widget) {
    545   native_widget_->StackAbove(widget->GetNativeView());
    546 }
    547 
    548 void Widget::StackAbove(gfx::NativeView native_view) {
    549   native_widget_->StackAbove(native_view);
    550 }
    551 
    552 void Widget::StackAtTop() {
    553   native_widget_->StackAtTop();
    554 }
    555 
    556 void Widget::StackBelow(gfx::NativeView native_view) {
    557   native_widget_->StackBelow(native_view);
    558 }
    559 
    560 void Widget::SetShape(gfx::NativeRegion shape) {
    561   native_widget_->SetShape(shape);
    562 }
    563 
    564 void Widget::Close() {
    565   if (widget_closed_) {
    566     // It appears we can hit this code path if you close a modal dialog then
    567     // close the last browser before the destructor is hit, which triggers
    568     // invoking Close again.
    569     return;
    570   }
    571 
    572   bool can_close = true;
    573   if (non_client_view_)
    574     can_close = non_client_view_->CanClose();
    575   if (can_close) {
    576     SaveWindowPlacement();
    577 
    578     // During tear-down the top-level focus manager becomes unavailable to
    579     // GTK tabbed panes and their children, so normal deregistration via
    580     // |FormManager::ViewRemoved()| calls are fouled.  We clear focus here
    581     // to avoid these redundant steps and to avoid accessing deleted views
    582     // that may have been in focus.
    583     if (is_top_level() && focus_manager_.get())
    584       focus_manager_->SetFocusedView(NULL);
    585 
    586     FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetClosing(this));
    587     native_widget_->Close();
    588     widget_closed_ = true;
    589   }
    590 }
    591 
    592 void Widget::CloseNow() {
    593   FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetClosing(this));
    594   native_widget_->CloseNow();
    595 }
    596 
    597 bool Widget::IsClosed() const {
    598   return widget_closed_;
    599 }
    600 
    601 void Widget::Show() {
    602   TRACE_EVENT0("views", "Widget::Show");
    603   if (non_client_view_) {
    604     // While initializing, the kiosk mode will go to full screen before the
    605     // widget gets shown. In that case we stay in full screen mode, regardless
    606     // of the |saved_show_state_| member.
    607     if (saved_show_state_ == ui::SHOW_STATE_MAXIMIZED &&
    608         !initial_restored_bounds_.IsEmpty() &&
    609         !IsFullscreen()) {
    610       native_widget_->ShowMaximizedWithBounds(initial_restored_bounds_);
    611     } else {
    612       native_widget_->ShowWithWindowState(
    613           IsFullscreen() ? ui::SHOW_STATE_FULLSCREEN : saved_show_state_);
    614     }
    615     // |saved_show_state_| only applies the first time the window is shown.
    616     // If we don't reset the value the window may be shown maximized every time
    617     // it is subsequently shown after being hidden.
    618     saved_show_state_ = ui::SHOW_STATE_NORMAL;
    619   } else {
    620     CanActivate()
    621         ? native_widget_->Show()
    622         : native_widget_->ShowWithWindowState(ui::SHOW_STATE_INACTIVE);
    623   }
    624 }
    625 
    626 void Widget::Hide() {
    627   native_widget_->Hide();
    628 }
    629 
    630 void Widget::ShowInactive() {
    631   // If this gets called with saved_show_state_ == ui::SHOW_STATE_MAXIMIZED,
    632   // call SetBounds()with the restored bounds to set the correct size. This
    633   // normally should not happen, but if it does we should avoid showing unsized
    634   // windows.
    635   if (saved_show_state_ == ui::SHOW_STATE_MAXIMIZED &&
    636       !initial_restored_bounds_.IsEmpty()) {
    637     SetBounds(initial_restored_bounds_);
    638     saved_show_state_ = ui::SHOW_STATE_NORMAL;
    639   }
    640   native_widget_->ShowWithWindowState(ui::SHOW_STATE_INACTIVE);
    641 }
    642 
    643 void Widget::Activate() {
    644   native_widget_->Activate();
    645 }
    646 
    647 void Widget::Deactivate() {
    648   native_widget_->Deactivate();
    649 }
    650 
    651 bool Widget::IsActive() const {
    652   return native_widget_->IsActive();
    653 }
    654 
    655 void Widget::DisableInactiveRendering() {
    656   SetInactiveRenderingDisabled(true);
    657 }
    658 
    659 void Widget::SetAlwaysOnTop(bool on_top) {
    660   native_widget_->SetAlwaysOnTop(on_top);
    661 }
    662 
    663 bool Widget::IsAlwaysOnTop() const {
    664   return native_widget_->IsAlwaysOnTop();
    665 }
    666 
    667 void Widget::SetVisibleOnAllWorkspaces(bool always_visible) {
    668   native_widget_->SetVisibleOnAllWorkspaces(always_visible);
    669 }
    670 
    671 void Widget::Maximize() {
    672   native_widget_->Maximize();
    673 }
    674 
    675 void Widget::Minimize() {
    676   native_widget_->Minimize();
    677 }
    678 
    679 void Widget::Restore() {
    680   native_widget_->Restore();
    681 }
    682 
    683 bool Widget::IsMaximized() const {
    684   return native_widget_->IsMaximized();
    685 }
    686 
    687 bool Widget::IsMinimized() const {
    688   return native_widget_->IsMinimized();
    689 }
    690 
    691 void Widget::SetFullscreen(bool fullscreen) {
    692   if (IsFullscreen() == fullscreen)
    693     return;
    694 
    695   native_widget_->SetFullscreen(fullscreen);
    696 
    697   if (non_client_view_)
    698     non_client_view_->Layout();
    699 }
    700 
    701 bool Widget::IsFullscreen() const {
    702   return native_widget_->IsFullscreen();
    703 }
    704 
    705 void Widget::SetOpacity(unsigned char opacity) {
    706   native_widget_->SetOpacity(opacity);
    707 }
    708 
    709 void Widget::SetUseDragFrame(bool use_drag_frame) {
    710   native_widget_->SetUseDragFrame(use_drag_frame);
    711 }
    712 
    713 void Widget::FlashFrame(bool flash) {
    714   native_widget_->FlashFrame(flash);
    715 }
    716 
    717 View* Widget::GetRootView() {
    718   return root_view_.get();
    719 }
    720 
    721 const View* Widget::GetRootView() const {
    722   return root_view_.get();
    723 }
    724 
    725 bool Widget::IsVisible() const {
    726   return native_widget_->IsVisible();
    727 }
    728 
    729 ui::ThemeProvider* Widget::GetThemeProvider() const {
    730   const Widget* root_widget = GetTopLevelWidget();
    731   if (root_widget && root_widget != this) {
    732     // Attempt to get the theme provider, and fall back to the default theme
    733     // provider if not found.
    734     ui::ThemeProvider* provider = root_widget->GetThemeProvider();
    735     if (provider)
    736       return provider;
    737 
    738     provider = root_widget->default_theme_provider_.get();
    739     if (provider)
    740       return provider;
    741   }
    742   return default_theme_provider_.get();
    743 }
    744 
    745 const ui::NativeTheme* Widget::GetNativeTheme() const {
    746   return native_widget_->GetNativeTheme();
    747 }
    748 
    749 FocusManager* Widget::GetFocusManager() {
    750   Widget* toplevel_widget = GetTopLevelWidget();
    751   return toplevel_widget ? toplevel_widget->focus_manager_.get() : NULL;
    752 }
    753 
    754 const FocusManager* Widget::GetFocusManager() const {
    755   const Widget* toplevel_widget = GetTopLevelWidget();
    756   return toplevel_widget ? toplevel_widget->focus_manager_.get() : NULL;
    757 }
    758 
    759 InputMethod* Widget::GetInputMethod() {
    760   return const_cast<InputMethod*>(
    761       const_cast<const Widget*>(this)->GetInputMethod());
    762 }
    763 
    764 const InputMethod* Widget::GetInputMethod() const {
    765   if (is_top_level()) {
    766     if (!input_method_.get())
    767       input_method_ = const_cast<Widget*>(this)->CreateInputMethod().Pass();
    768     return input_method_.get();
    769   } else {
    770     const Widget* toplevel = GetTopLevelWidget();
    771     // If GetTopLevelWidget() returns itself which is not toplevel,
    772     // the widget is detached from toplevel widget.
    773     // TODO(oshima): Fix GetTopLevelWidget() to return NULL
    774     // if there is no toplevel. We probably need to add GetTopMostWidget()
    775     // to replace some use cases.
    776     return (toplevel && toplevel != this) ? toplevel->GetInputMethod() : NULL;
    777   }
    778 }
    779 
    780 ui::InputMethod* Widget::GetHostInputMethod() {
    781   return native_widget_private()->GetHostInputMethod();
    782 }
    783 
    784 void Widget::RunShellDrag(View* view,
    785                           const ui::OSExchangeData& data,
    786                           const gfx::Point& location,
    787                           int operation,
    788                           ui::DragDropTypes::DragEventSource source) {
    789   dragged_view_ = view;
    790   native_widget_->RunShellDrag(view, data, location, operation, source);
    791   // If the view is removed during the drag operation, dragged_view_ is set to
    792   // NULL.
    793   if (view && dragged_view_ == view) {
    794     dragged_view_ = NULL;
    795     view->OnDragDone();
    796   }
    797 }
    798 
    799 void Widget::SchedulePaintInRect(const gfx::Rect& rect) {
    800   native_widget_->SchedulePaintInRect(rect);
    801 }
    802 
    803 void Widget::SetCursor(gfx::NativeCursor cursor) {
    804   native_widget_->SetCursor(cursor);
    805 }
    806 
    807 bool Widget::IsMouseEventsEnabled() const {
    808   return native_widget_->IsMouseEventsEnabled();
    809 }
    810 
    811 void Widget::SetNativeWindowProperty(const char* name, void* value) {
    812   native_widget_->SetNativeWindowProperty(name, value);
    813 }
    814 
    815 void* Widget::GetNativeWindowProperty(const char* name) const {
    816   return native_widget_->GetNativeWindowProperty(name);
    817 }
    818 
    819 void Widget::UpdateWindowTitle() {
    820   if (!non_client_view_)
    821     return;
    822 
    823   // Update the native frame's text. We do this regardless of whether or not
    824   // the native frame is being used, since this also updates the taskbar, etc.
    825   base::string16 window_title = widget_delegate_->GetWindowTitle();
    826   base::i18n::AdjustStringForLocaleDirection(&window_title);
    827   if (!native_widget_->SetWindowTitle(window_title))
    828     return;
    829   non_client_view_->UpdateWindowTitle();
    830 
    831   // If the non-client view is rendering its own title, it'll need to relayout
    832   // now and to get a paint update later on.
    833   non_client_view_->Layout();
    834 }
    835 
    836 void Widget::UpdateWindowIcon() {
    837   if (non_client_view_)
    838     non_client_view_->UpdateWindowIcon();
    839   native_widget_->SetWindowIcons(widget_delegate_->GetWindowIcon(),
    840                                  widget_delegate_->GetWindowAppIcon());
    841 }
    842 
    843 FocusTraversable* Widget::GetFocusTraversable() {
    844   return static_cast<internal::RootView*>(root_view_.get());
    845 }
    846 
    847 void Widget::ThemeChanged() {
    848   root_view_->ThemeChanged();
    849 }
    850 
    851 void Widget::LocaleChanged() {
    852   root_view_->LocaleChanged();
    853 }
    854 
    855 void Widget::SetFocusTraversableParent(FocusTraversable* parent) {
    856   root_view_->SetFocusTraversableParent(parent);
    857 }
    858 
    859 void Widget::SetFocusTraversableParentView(View* parent_view) {
    860   root_view_->SetFocusTraversableParentView(parent_view);
    861 }
    862 
    863 void Widget::ClearNativeFocus() {
    864   native_widget_->ClearNativeFocus();
    865 }
    866 
    867 NonClientFrameView* Widget::CreateNonClientFrameView() {
    868   NonClientFrameView* frame_view =
    869       widget_delegate_->CreateNonClientFrameView(this);
    870   if (!frame_view)
    871     frame_view = native_widget_->CreateNonClientFrameView();
    872   if (!frame_view && ViewsDelegate::views_delegate) {
    873     frame_view =
    874         ViewsDelegate::views_delegate->CreateDefaultNonClientFrameView(this);
    875   }
    876   if (frame_view)
    877     return frame_view;
    878 
    879   CustomFrameView* custom_frame_view = new CustomFrameView;
    880   custom_frame_view->Init(this);
    881   return custom_frame_view;
    882 }
    883 
    884 bool Widget::ShouldUseNativeFrame() const {
    885   if (frame_type_ != FRAME_TYPE_DEFAULT)
    886     return frame_type_ == FRAME_TYPE_FORCE_NATIVE;
    887   return native_widget_->ShouldUseNativeFrame();
    888 }
    889 
    890 bool Widget::ShouldWindowContentsBeTransparent() const {
    891   return native_widget_->ShouldWindowContentsBeTransparent();
    892 }
    893 
    894 void Widget::DebugToggleFrameType() {
    895   if (frame_type_ == FRAME_TYPE_DEFAULT) {
    896     frame_type_ = ShouldUseNativeFrame() ? FRAME_TYPE_FORCE_CUSTOM :
    897         FRAME_TYPE_FORCE_NATIVE;
    898   } else {
    899     frame_type_ = frame_type_ == FRAME_TYPE_FORCE_CUSTOM ?
    900         FRAME_TYPE_FORCE_NATIVE : FRAME_TYPE_FORCE_CUSTOM;
    901   }
    902   FrameTypeChanged();
    903 }
    904 
    905 void Widget::FrameTypeChanged() {
    906   native_widget_->FrameTypeChanged();
    907 }
    908 
    909 const ui::Compositor* Widget::GetCompositor() const {
    910   return native_widget_->GetCompositor();
    911 }
    912 
    913 ui::Compositor* Widget::GetCompositor() {
    914   return native_widget_->GetCompositor();
    915 }
    916 
    917 ui::Layer* Widget::GetLayer() {
    918   return native_widget_->GetLayer();
    919 }
    920 
    921 void Widget::ReorderNativeViews() {
    922   native_widget_->ReorderNativeViews();
    923 }
    924 
    925 void Widget::UpdateRootLayers() {
    926   // Calculate the layers requires traversing the tree, and since nearly any
    927   // mutation of the tree can trigger this call we delay until absolutely
    928   // necessary.
    929   root_layers_dirty_ = true;
    930 }
    931 
    932 const NativeWidget* Widget::native_widget() const {
    933   return native_widget_;
    934 }
    935 
    936 NativeWidget* Widget::native_widget() {
    937   return native_widget_;
    938 }
    939 
    940 void Widget::SetCapture(View* view) {
    941   if (internal::NativeWidgetPrivate::IsMouseButtonDown())
    942     is_mouse_button_pressed_ = true;
    943   if (internal::NativeWidgetPrivate::IsTouchDown())
    944     is_touch_down_ = true;
    945   root_view_->SetMouseHandler(view);
    946   if (!native_widget_->HasCapture())
    947     native_widget_->SetCapture();
    948 }
    949 
    950 void Widget::ReleaseCapture() {
    951   if (native_widget_->HasCapture())
    952     native_widget_->ReleaseCapture();
    953 }
    954 
    955 bool Widget::HasCapture() {
    956   return native_widget_->HasCapture();
    957 }
    958 
    959 TooltipManager* Widget::GetTooltipManager() {
    960   return native_widget_->GetTooltipManager();
    961 }
    962 
    963 const TooltipManager* Widget::GetTooltipManager() const {
    964   return native_widget_->GetTooltipManager();
    965 }
    966 
    967 gfx::Rect Widget::GetWorkAreaBoundsInScreen() const {
    968   return native_widget_->GetWorkAreaBoundsInScreen();
    969 }
    970 
    971 void Widget::SynthesizeMouseMoveEvent() {
    972   last_mouse_event_was_move_ = false;
    973   ui::MouseEvent mouse_event(ui::ET_MOUSE_MOVED,
    974                              last_mouse_event_position_,
    975                              last_mouse_event_position_,
    976                              ui::EF_IS_SYNTHESIZED, 0);
    977   root_view_->OnMouseMoved(mouse_event);
    978 }
    979 
    980 void Widget::OnRootViewLayout() {
    981   native_widget_->OnRootViewLayout();
    982 }
    983 
    984 bool Widget::IsTranslucentWindowOpacitySupported() const {
    985   return native_widget_->IsTranslucentWindowOpacitySupported();
    986 }
    987 
    988 void Widget::OnOwnerClosing() {
    989 }
    990 
    991 ////////////////////////////////////////////////////////////////////////////////
    992 // Widget, NativeWidgetDelegate implementation:
    993 
    994 bool Widget::IsModal() const {
    995   return widget_delegate_->GetModalType() != ui::MODAL_TYPE_NONE;
    996 }
    997 
    998 bool Widget::IsDialogBox() const {
    999   return !!widget_delegate_->AsDialogDelegate();
   1000 }
   1001 
   1002 bool Widget::CanActivate() const {
   1003   return widget_delegate_->CanActivate();
   1004 }
   1005 
   1006 bool Widget::IsInactiveRenderingDisabled() const {
   1007   return disable_inactive_rendering_;
   1008 }
   1009 
   1010 void Widget::EnableInactiveRendering() {
   1011   SetInactiveRenderingDisabled(false);
   1012 }
   1013 
   1014 void Widget::OnNativeWidgetActivationChanged(bool active) {
   1015   // On windows we may end up here before we've completed initialization (from
   1016   // an WM_NCACTIVATE). If that happens the WidgetDelegate likely doesn't know
   1017   // the Widget and will crash attempting to access it.
   1018   if (!active && native_widget_initialized_)
   1019     SaveWindowPlacement();
   1020 
   1021   FOR_EACH_OBSERVER(WidgetObserver, observers_,
   1022                     OnWidgetActivationChanged(this, active));
   1023 
   1024   // During window creation, the widget gets focused without activation, and in
   1025   // that case, the focus manager cannot set the appropriate text input client
   1026   // because the widget is not active.  Thus we have to notify the focus manager
   1027   // not only when the focus changes but also when the widget gets activated.
   1028   // See crbug.com/377479 for details.
   1029   views::FocusManager* focus_manager = GetFocusManager();
   1030   if (focus_manager) {
   1031     if (active)
   1032       focus_manager->FocusTextInputClient(focus_manager->GetFocusedView());
   1033     else
   1034       focus_manager->BlurTextInputClient(focus_manager->GetFocusedView());
   1035   }
   1036 
   1037   if (IsVisible() && non_client_view())
   1038     non_client_view()->frame_view()->SchedulePaint();
   1039 }
   1040 
   1041 void Widget::OnNativeFocus(gfx::NativeView old_focused_view) {
   1042   WidgetFocusManager::GetInstance()->OnWidgetFocusEvent(old_focused_view,
   1043                                                         GetNativeView());
   1044 }
   1045 
   1046 void Widget::OnNativeBlur(gfx::NativeView new_focused_view) {
   1047   WidgetFocusManager::GetInstance()->OnWidgetFocusEvent(GetNativeView(),
   1048                                                         new_focused_view);
   1049 }
   1050 
   1051 void Widget::OnNativeWidgetVisibilityChanging(bool visible) {
   1052   FOR_EACH_OBSERVER(WidgetObserver, observers_,
   1053                     OnWidgetVisibilityChanging(this, visible));
   1054 }
   1055 
   1056 void Widget::OnNativeWidgetVisibilityChanged(bool visible) {
   1057   View* root = GetRootView();
   1058   if (root)
   1059     root->PropagateVisibilityNotifications(root, visible);
   1060   FOR_EACH_OBSERVER(WidgetObserver, observers_,
   1061                     OnWidgetVisibilityChanged(this, visible));
   1062   if (GetCompositor() && root && root->layer())
   1063     root->layer()->SetVisible(visible);
   1064 }
   1065 
   1066 void Widget::OnNativeWidgetCreated(bool desktop_widget) {
   1067   if (is_top_level())
   1068     focus_manager_.reset(FocusManagerFactory::Create(this, desktop_widget));
   1069 
   1070   native_widget_->InitModalType(widget_delegate_->GetModalType());
   1071 
   1072   FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetCreated(this));
   1073 }
   1074 
   1075 void Widget::OnNativeWidgetDestroying() {
   1076   // Tell the focus manager (if any) that root_view is being removed
   1077   // in case that the focused view is under this root view.
   1078   if (GetFocusManager())
   1079     GetFocusManager()->ViewRemoved(root_view_.get());
   1080   FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetDestroying(this));
   1081   if (non_client_view_)
   1082     non_client_view_->WindowClosing();
   1083   widget_delegate_->WindowClosing();
   1084 }
   1085 
   1086 void Widget::OnNativeWidgetDestroyed() {
   1087   FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetDestroyed(this));
   1088   widget_delegate_->DeleteDelegate();
   1089   widget_delegate_ = NULL;
   1090   native_widget_destroyed_ = true;
   1091 }
   1092 
   1093 gfx::Size Widget::GetMinimumSize() const {
   1094   return non_client_view_ ? non_client_view_->GetMinimumSize() : gfx::Size();
   1095 }
   1096 
   1097 gfx::Size Widget::GetMaximumSize() const {
   1098   return non_client_view_ ? non_client_view_->GetMaximumSize() : gfx::Size();
   1099 }
   1100 
   1101 void Widget::OnNativeWidgetMove() {
   1102   widget_delegate_->OnWidgetMove();
   1103   View* root = GetRootView();
   1104   if (root && root->GetFocusManager()) {
   1105     View* focused_view = root->GetFocusManager()->GetFocusedView();
   1106     if (focused_view && focused_view->GetInputMethod())
   1107       focused_view->GetInputMethod()->OnCaretBoundsChanged(focused_view);
   1108   }
   1109   FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetBoundsChanged(
   1110     this,
   1111     GetWindowBoundsInScreen()));
   1112 }
   1113 
   1114 void Widget::OnNativeWidgetSizeChanged(const gfx::Size& new_size) {
   1115   View* root = GetRootView();
   1116   if (root) {
   1117     root->SetSize(new_size);
   1118     if (root->GetFocusManager()) {
   1119       View* focused_view = GetRootView()->GetFocusManager()->GetFocusedView();
   1120       if (focused_view && focused_view->GetInputMethod())
   1121         focused_view->GetInputMethod()->OnCaretBoundsChanged(focused_view);
   1122     }
   1123   }
   1124   // Size changed notifications can fire prior to full initialization
   1125   // i.e. during session restore.  Avoid saving session state during these
   1126   // startup procedures.
   1127   if (native_widget_initialized_)
   1128     SaveWindowPlacement();
   1129 
   1130   FOR_EACH_OBSERVER(WidgetObserver, observers_, OnWidgetBoundsChanged(
   1131     this,
   1132     GetWindowBoundsInScreen()));
   1133 }
   1134 
   1135 void Widget::OnNativeWidgetBeginUserBoundsChange() {
   1136   widget_delegate_->OnWindowBeginUserBoundsChange();
   1137 }
   1138 
   1139 void Widget::OnNativeWidgetEndUserBoundsChange() {
   1140   widget_delegate_->OnWindowEndUserBoundsChange();
   1141 }
   1142 
   1143 bool Widget::HasFocusManager() const {
   1144   return !!focus_manager_.get();
   1145 }
   1146 
   1147 bool Widget::OnNativeWidgetPaintAccelerated(const gfx::Rect& dirty_region) {
   1148   ui::Compositor* compositor = GetCompositor();
   1149   if (!compositor)
   1150     return false;
   1151 
   1152   compositor->ScheduleRedrawRect(dirty_region);
   1153   return true;
   1154 }
   1155 
   1156 void Widget::OnNativeWidgetPaint(gfx::Canvas* canvas) {
   1157   // On Linux Aura, we can get here during Init() because of the
   1158   // SetInitialBounds call.
   1159   if (native_widget_initialized_)
   1160     GetRootView()->Paint(canvas, CullSet());
   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         native_widget_->ReleaseCapture();
   1218       if (root_view)
   1219         root_view->OnMouseReleased(*event);
   1220       if ((event->flags() & ui::EF_IS_NON_CLIENT) == 0)
   1221         event->SetHandled();
   1222       return;
   1223 
   1224     case ui::ET_MOUSE_MOVED:
   1225     case ui::ET_MOUSE_DRAGGED:
   1226       if (native_widget_->HasCapture() && is_mouse_button_pressed_) {
   1227         last_mouse_event_was_move_ = false;
   1228         if (root_view)
   1229           root_view->OnMouseDragged(*event);
   1230       } else if (!last_mouse_event_was_move_ ||
   1231                  last_mouse_event_position_ != event->location()) {
   1232         last_mouse_event_position_ = event->location();
   1233         last_mouse_event_was_move_ = true;
   1234         if (root_view)
   1235           root_view->OnMouseMoved(*event);
   1236       }
   1237       return;
   1238 
   1239     case ui::ET_MOUSE_EXITED:
   1240       last_mouse_event_was_move_ = false;
   1241       if (root_view)
   1242         root_view->OnMouseExited(*event);
   1243       return;
   1244 
   1245     case ui::ET_MOUSEWHEEL:
   1246       if (root_view && root_view->OnMouseWheel(
   1247           static_cast<const ui::MouseWheelEvent&>(*event)))
   1248         event->SetHandled();
   1249       return;
   1250 
   1251     default:
   1252       return;
   1253   }
   1254 }
   1255 
   1256 void Widget::OnMouseCaptureLost() {
   1257   if (is_mouse_button_pressed_ || is_touch_down_) {
   1258     View* root_view = GetRootView();
   1259     if (root_view)
   1260       root_view->OnMouseCaptureLost();
   1261   }
   1262   is_touch_down_ = false;
   1263   is_mouse_button_pressed_ = false;
   1264 }
   1265 
   1266 void Widget::OnScrollEvent(ui::ScrollEvent* event) {
   1267   ui::ScrollEvent event_copy(*event);
   1268   SendEventToProcessor(&event_copy);
   1269 
   1270   // Convert unhandled ui::ET_SCROLL events into ui::ET_MOUSEWHEEL events.
   1271   if (!event_copy.handled() && event_copy.type() == ui::ET_SCROLL) {
   1272     ui::MouseWheelEvent wheel(*event);
   1273     OnMouseEvent(&wheel);
   1274   }
   1275 }
   1276 
   1277 void Widget::OnGestureEvent(ui::GestureEvent* event) {
   1278   switch (event->type()) {
   1279     case ui::ET_GESTURE_TAP_DOWN:
   1280       is_touch_down_ = true;
   1281       // We explicitly don't capture here. Not capturing enables multiple
   1282       // widgets to get tap events at the same time. Views (such as tab
   1283       // dragging) may explicitly capture.
   1284       break;
   1285 
   1286     case ui::ET_GESTURE_END:
   1287       if (event->details().touch_points() == 1)
   1288         is_touch_down_ = false;
   1289       break;
   1290 
   1291     default:
   1292       break;
   1293   }
   1294   SendEventToProcessor(event);
   1295 }
   1296 
   1297 bool Widget::ExecuteCommand(int command_id) {
   1298   return widget_delegate_->ExecuteWindowsCommand(command_id);
   1299 }
   1300 
   1301 InputMethod* Widget::GetInputMethodDirect() {
   1302   return input_method_.get();
   1303 }
   1304 
   1305 const std::vector<ui::Layer*>& Widget::GetRootLayers() {
   1306   if (root_layers_dirty_) {
   1307     root_layers_dirty_ = false;
   1308     root_layers_.clear();
   1309     BuildRootLayers(GetRootView(), &root_layers_);
   1310   }
   1311   return root_layers_;
   1312 }
   1313 
   1314 bool Widget::HasHitTestMask() const {
   1315   return widget_delegate_->WidgetHasHitTestMask();
   1316 }
   1317 
   1318 void Widget::GetHitTestMask(gfx::Path* mask) const {
   1319   DCHECK(mask);
   1320   widget_delegate_->GetWidgetHitTestMask(mask);
   1321 }
   1322 
   1323 Widget* Widget::AsWidget() {
   1324   return this;
   1325 }
   1326 
   1327 const Widget* Widget::AsWidget() const {
   1328   return this;
   1329 }
   1330 
   1331 bool Widget::SetInitialFocus(ui::WindowShowState show_state) {
   1332   View* v = widget_delegate_->GetInitiallyFocusedView();
   1333   if (!focus_on_creation_ || show_state == ui::SHOW_STATE_INACTIVE ||
   1334       show_state == ui::SHOW_STATE_MINIMIZED) {
   1335     // If not focusing the window now, tell the focus manager which view to
   1336     // focus when the window is restored.
   1337     if (v)
   1338       focus_manager_->SetStoredFocusView(v);
   1339     return true;
   1340   }
   1341   if (v)
   1342     v->RequestFocus();
   1343   return !!v;
   1344 }
   1345 
   1346 ////////////////////////////////////////////////////////////////////////////////
   1347 // Widget, ui::EventSource implementation:
   1348 ui::EventProcessor* Widget::GetEventProcessor() {
   1349   return root_view_.get();
   1350 }
   1351 
   1352 ////////////////////////////////////////////////////////////////////////////////
   1353 // Widget, FocusTraversable implementation:
   1354 
   1355 FocusSearch* Widget::GetFocusSearch() {
   1356   return root_view_->GetFocusSearch();
   1357 }
   1358 
   1359 FocusTraversable* Widget::GetFocusTraversableParent() {
   1360   // We are a proxy to the root view, so we should be bypassed when traversing
   1361   // up and as a result this should not be called.
   1362   NOTREACHED();
   1363   return NULL;
   1364 }
   1365 
   1366 View* Widget::GetFocusTraversableParentView() {
   1367   // We are a proxy to the root view, so we should be bypassed when traversing
   1368   // up and as a result this should not be called.
   1369   NOTREACHED();
   1370   return NULL;
   1371 }
   1372 
   1373 ////////////////////////////////////////////////////////////////////////////////
   1374 // Widget, ui::NativeThemeObserver implementation:
   1375 
   1376 void Widget::OnNativeThemeUpdated(ui::NativeTheme* observed_theme) {
   1377   DCHECK(observer_manager_.IsObserving(observed_theme));
   1378 
   1379   ui::NativeTheme* current_native_theme = GetNativeTheme();
   1380   if (!observer_manager_.IsObserving(current_native_theme)) {
   1381     observer_manager_.RemoveAll();
   1382     observer_manager_.Add(current_native_theme);
   1383   }
   1384 
   1385   root_view_->PropagateNativeThemeChanged(current_native_theme);
   1386 }
   1387 
   1388 ////////////////////////////////////////////////////////////////////////////////
   1389 // Widget, protected:
   1390 
   1391 internal::RootView* Widget::CreateRootView() {
   1392   return new internal::RootView(this);
   1393 }
   1394 
   1395 void Widget::DestroyRootView() {
   1396   non_client_view_ = NULL;
   1397   root_view_.reset();
   1398   // Input method has to be destroyed before focus manager.
   1399   input_method_.reset();
   1400 }
   1401 
   1402 ////////////////////////////////////////////////////////////////////////////////
   1403 // Widget, private:
   1404 
   1405 void Widget::SetInactiveRenderingDisabled(bool value) {
   1406   if (value == disable_inactive_rendering_)
   1407     return;
   1408 
   1409   disable_inactive_rendering_ = value;
   1410   if (non_client_view_)
   1411     non_client_view_->SetInactiveRenderingDisabled(value);
   1412 }
   1413 
   1414 void Widget::SaveWindowPlacement() {
   1415   // The window delegate does the actual saving for us. It seems like (judging
   1416   // by go/crash) that in some circumstances we can end up here after
   1417   // WM_DESTROY, at which point the window delegate is likely gone. So just
   1418   // bail.
   1419   if (!widget_delegate_)
   1420     return;
   1421 
   1422   ui::WindowShowState show_state = ui::SHOW_STATE_NORMAL;
   1423   gfx::Rect bounds;
   1424   native_widget_->GetWindowPlacement(&bounds, &show_state);
   1425   widget_delegate_->SaveWindowPlacement(bounds, show_state);
   1426 }
   1427 
   1428 void Widget::SetInitialBounds(const gfx::Rect& bounds) {
   1429   if (!non_client_view_)
   1430     return;
   1431 
   1432   gfx::Rect saved_bounds;
   1433   if (GetSavedWindowPlacement(&saved_bounds, &saved_show_state_)) {
   1434     if (saved_show_state_ == ui::SHOW_STATE_MAXIMIZED) {
   1435       // If we're going to maximize, wait until Show is invoked to set the
   1436       // bounds. That way we avoid a noticeable resize.
   1437       initial_restored_bounds_ = saved_bounds;
   1438     } else if (!saved_bounds.IsEmpty()) {
   1439       // If the saved bounds are valid, use them.
   1440       SetBounds(saved_bounds);
   1441     }
   1442   } else {
   1443     if (bounds.IsEmpty()) {
   1444       // No initial bounds supplied, so size the window to its content and
   1445       // center over its parent.
   1446       native_widget_->CenterWindow(non_client_view_->GetPreferredSize());
   1447     } else {
   1448       // Use the supplied initial bounds.
   1449       SetBoundsConstrained(bounds);
   1450     }
   1451   }
   1452 }
   1453 
   1454 void Widget::SetInitialBoundsForFramelessWindow(const gfx::Rect& bounds) {
   1455   if (bounds.IsEmpty()) {
   1456     View* contents_view = GetContentsView();
   1457     DCHECK(contents_view);
   1458     // No initial bounds supplied, so size the window to its content and
   1459     // center over its parent if preferred size is provided.
   1460     gfx::Size size = contents_view->GetPreferredSize();
   1461     if (!size.IsEmpty())
   1462       native_widget_->CenterWindow(size);
   1463   } else {
   1464     // Use the supplied initial bounds.
   1465     SetBoundsConstrained(bounds);
   1466   }
   1467 }
   1468 
   1469 bool Widget::GetSavedWindowPlacement(gfx::Rect* bounds,
   1470                                      ui::WindowShowState* show_state) {
   1471   // First we obtain the window's saved show-style and store it. We need to do
   1472   // this here, rather than in Show() because by the time Show() is called,
   1473   // the window's size will have been reset (below) and the saved maximized
   1474   // state will have been lost. Sadly there's no way to tell on Windows when
   1475   // a window is restored from maximized state, so we can't more accurately
   1476   // track maximized state independently of sizing information.
   1477 
   1478   // Restore the window's placement from the controller.
   1479   if (widget_delegate_->GetSavedWindowPlacement(this, bounds, show_state)) {
   1480     if (!widget_delegate_->ShouldRestoreWindowSize()) {
   1481       bounds->set_size(non_client_view_->GetPreferredSize());
   1482     } else {
   1483       gfx::Size minimum_size = GetMinimumSize();
   1484       // Make sure the bounds are at least the minimum size.
   1485       if (bounds->width() < minimum_size.width())
   1486         bounds->set_width(minimum_size.width());
   1487 
   1488       if (bounds->height() < minimum_size.height())
   1489         bounds->set_height(minimum_size.height());
   1490     }
   1491     return true;
   1492   }
   1493   return false;
   1494 }
   1495 
   1496 scoped_ptr<InputMethod> Widget::CreateInputMethod() {
   1497   scoped_ptr<InputMethod> input_method(native_widget_->CreateInputMethod());
   1498   if (input_method.get())
   1499     input_method->Init(this);
   1500   return input_method.Pass();
   1501 }
   1502 
   1503 void Widget::ReplaceInputMethod(InputMethod* input_method) {
   1504   input_method_.reset(input_method);
   1505   input_method->SetDelegate(native_widget_->GetInputMethodDelegate());
   1506   input_method->Init(this);
   1507 }
   1508 
   1509 namespace internal {
   1510 
   1511 ////////////////////////////////////////////////////////////////////////////////
   1512 // internal::NativeWidgetPrivate, NativeWidget implementation:
   1513 
   1514 internal::NativeWidgetPrivate* NativeWidgetPrivate::AsNativeWidgetPrivate() {
   1515   return this;
   1516 }
   1517 
   1518 }  // namespace internal
   1519 }  // namespace views
   1520