Don't show supervised user as "already on this device" while they're being imported.
[chromium-blink-merge.git] / ui / views / cocoa / bridged_native_widget.mm
blob78abdb837c97ba5c25f94525c20d25606e7990a9
1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #import "ui/views/cocoa/bridged_native_widget.h"
7 #import <objc/runtime.h>
9 #include "base/logging.h"
10 #include "base/mac/mac_util.h"
11 #import "base/mac/sdk_forward_declarations.h"
12 #include "base/thread_task_runner_handle.h"
13 #include "ui/base/ime/input_method.h"
14 #include "ui/base/ime/input_method_factory.h"
15 #include "ui/base/ui_base_switches_util.h"
16 #include "ui/gfx/display.h"
17 #include "ui/gfx/geometry/dip_util.h"
18 #import "ui/gfx/mac/coordinate_conversion.h"
19 #import "ui/gfx/mac/nswindow_frame_controls.h"
20 #include "ui/gfx/screen.h"
21 #import "ui/views/cocoa/bridged_content_view.h"
22 #import "ui/views/cocoa/cocoa_mouse_capture.h"
23 #include "ui/views/cocoa/tooltip_manager_mac.h"
24 #import "ui/views/cocoa/views_nswindow_delegate.h"
25 #import "ui/views/cocoa/widget_owner_nswindow_adapter.h"
26 #include "ui/views/ime/input_method_bridge.h"
27 #include "ui/views/ime/null_input_method.h"
28 #include "ui/views/view.h"
29 #include "ui/views/views_delegate.h"
30 #include "ui/views/widget/native_widget_mac.h"
31 #include "ui/views/widget/widget.h"
32 #include "ui/views/widget/widget_aura_utils.h"
33 #include "ui/views/widget/widget_delegate.h"
35 // The NSView that hosts the composited CALayer drawing the UI. It fills the
36 // window but is not hittable so that accessibility hit tests always go to the
37 // BridgedContentView.
38 @interface ViewsCompositorSuperview : NSView
39 @end
41 @implementation ViewsCompositorSuperview
42 - (NSView*)hitTest:(NSPoint)aPoint {
43   return nil;
45 @end
47 namespace {
49 int kWindowPropertiesKey;
51 float GetDeviceScaleFactorFromView(NSView* view) {
52   gfx::Display display =
53       gfx::Screen::GetScreenFor(view)->GetDisplayNearestWindow(view);
54   DCHECK(display.is_valid());
55   return display.device_scale_factor();
58 // Returns true if bounds passed to window in SetBounds should be treated as
59 // though they are in screen coordinates.
60 bool PositionWindowInScreenCoordinates(views::Widget* widget,
61                                        views::Widget::InitParams::Type type) {
62   // Replicate the logic in desktop_aura/desktop_screen_position_client.cc.
63   if (views::GetAuraWindowTypeForWidgetType(type) == ui::wm::WINDOW_TYPE_POPUP)
64     return true;
66   return widget && widget->is_top_level();
69 // Return the content size for a minimum or maximum widget size.
70 gfx::Size GetClientSizeForWindowSize(NSWindow* window,
71                                      const gfx::Size& window_size) {
72   NSRect frame_rect =
73       NSMakeRect(0, 0, window_size.width(), window_size.height());
74   // Note gfx::Size will prevent dimensions going negative. They are allowed to
75   // be zero at this point, because Widget::GetMinimumSize() may later increase
76   // the size.
77   return gfx::Size([window contentRectForFrameRect:frame_rect].size);
80 }  // namespace
82 namespace views {
84 // static
85 gfx::Size BridgedNativeWidget::GetWindowSizeForClientSize(
86     NSWindow* window,
87     const gfx::Size& content_size) {
88   NSRect content_rect =
89       NSMakeRect(0, 0, content_size.width(), content_size.height());
90   NSRect frame_rect = [window frameRectForContentRect:content_rect];
91   return gfx::Size(NSWidth(frame_rect), NSHeight(frame_rect));
94 BridgedNativeWidget::BridgedNativeWidget(NativeWidgetMac* parent)
95     : native_widget_mac_(parent),
96       focus_manager_(nullptr),
97       widget_type_(Widget::InitParams::TYPE_WINDOW),  // Updated in Init().
98       parent_(nullptr),
99       target_fullscreen_state_(false),
100       in_fullscreen_transition_(false),
101       window_visible_(false),
102       wants_to_be_visible_(false) {
103   DCHECK(parent);
104   window_delegate_.reset(
105       [[ViewsNSWindowDelegate alloc] initWithBridgedNativeWidget:this]);
108 BridgedNativeWidget::~BridgedNativeWidget() {
109   RemoveOrDestroyChildren();
110   DCHECK(child_windows_.empty());
111   SetFocusManager(NULL);
112   SetRootView(NULL);
113   DestroyCompositor();
114   if ([window_ delegate]) {
115     // If the delegate is still set on a modal dialog, it means it was not
116     // closed via [NSApplication endSheet:]. This is probably OK if the widget
117     // was never shown. But Cocoa ignores close() calls on open sheets. Calling
118     // endSheet: here would work, but it messes up assumptions elsewhere. E.g.
119     // DialogClientView assumes its delegate is alive when closing, which isn't
120     // true after endSheet: synchronously calls OnNativeWidgetDestroyed().
121     // So ban it. Modal dialogs should be closed via Widget::Close().
122     DCHECK(!native_widget_mac_->GetWidget()->IsModal());
124     // If the delegate is still set, it means OnWindowWillClose has not been
125     // called and the window is still open. Calling -[NSWindow close] will
126     // synchronously call OnWindowWillClose and notify NativeWidgetMac.
127     [window_ close];
128   }
129   DCHECK(![window_ delegate]);
132 void BridgedNativeWidget::Init(base::scoped_nsobject<NSWindow> window,
133                                const Widget::InitParams& params) {
134   widget_type_ = params.type;
136   DCHECK(!window_);
137   window_.swap(window);
138   [window_ setDelegate:window_delegate_];
140   // Register for application hide notifications so that visibility can be
141   // properly tracked. This is not done in the delegate so that the lifetime is
142   // tied to the C++ object, rather than the delegate (which may be reference
143   // counted). This is required since the application hides do not send an
144   // orderOut: to individual windows. Unhide, however, does send an order
145   // message.
146   [[NSNotificationCenter defaultCenter]
147       addObserver:window_delegate_
148          selector:@selector(onWindowOrderChanged:)
149              name:NSApplicationDidHideNotification
150            object:nil];
152   // Validate the window's initial state, otherwise the bridge's initial
153   // tracking state will be incorrect.
154   DCHECK(![window_ isVisible]);
155   DCHECK_EQ(0u, [window_ styleMask] & NSFullScreenWindowMask);
157   if (params.parent) {
158     // Disallow creating child windows of views not currently in an NSWindow.
159     CHECK([params.parent window]);
160     BridgedNativeWidget* bridged_native_widget_parent =
161         NativeWidgetMac::GetBridgeForNativeWindow([params.parent window]);
162     // If the parent is another BridgedNativeWidget, just add to the collection
163     // of child windows it owns and manages. Otherwise, create an adapter to
164     // anchor the child widget and observe when the parent NSWindow is closed.
165     if (bridged_native_widget_parent) {
166       parent_ = bridged_native_widget_parent;
167       bridged_native_widget_parent->child_windows_.push_back(this);
168     } else {
169       parent_ = new WidgetOwnerNSWindowAdapter(this, params.parent);
170     }
171   }
173   // Set a meaningful initial bounds. Note that except for frameless widgets
174   // with no WidgetDelegate, the bounds will be set again by Widget after
175   // initializing the non-client view. In the former case, if bounds were not
176   // set at all, the creator of the Widget is expected to call SetBounds()
177   // before calling Widget::Show() to avoid a kWindowSizeDeterminedLater-sized
178   // (i.e. 1x1) window appearing.
179   if (!params.bounds.IsEmpty()) {
180     SetBounds(params.bounds);
181   } else {
182     // If a position is set, but no size, complain. Otherwise, a 1x1 window
183     // would appear there, which might be unexpected.
184     DCHECK(params.bounds.origin().IsOrigin())
185         << "Zero-sized windows not supported on Mac.";
187     // Otherwise, bounds is all zeroes. Cocoa will currently have the window at
188     // the bottom left of the screen. To support a client calling SetSize() only
189     // (and for consistency across platforms) put it at the top-left instead.
190     // Read back the current frame: it will be a 1x1 context rect but the frame
191     // size also depends on the window style.
192     NSRect frame_rect = [window_ frame];
193     SetBounds(gfx::Rect(gfx::Point(),
194                         gfx::Size(NSWidth(frame_rect), NSHeight(frame_rect))));
195   }
197   // Widgets for UI controls (usually layered above web contents) start visible.
198   if (params.type == Widget::InitParams::TYPE_CONTROL)
199     SetVisibilityState(SHOW_INACTIVE);
201   // Tooltip Widgets shouldn't have their own tooltip manager, but tooltips are
202   // native on Mac, so nothing should ever want one in Widget form.
203   DCHECK_NE(params.type, Widget::InitParams::TYPE_TOOLTIP);
204   tooltip_manager_.reset(new TooltipManagerMac(this));
207 void BridgedNativeWidget::SetFocusManager(FocusManager* focus_manager) {
208   if (focus_manager_ == focus_manager)
209     return;
211   if (focus_manager_)
212     focus_manager_->RemoveFocusChangeListener(this);
214   if (focus_manager)
215     focus_manager->AddFocusChangeListener(this);
217   focus_manager_ = focus_manager;
220 void BridgedNativeWidget::SetBounds(const gfx::Rect& new_bounds) {
221   Widget* widget = native_widget_mac_->GetWidget();
222   // -[NSWindow contentMinSize] is only checked by Cocoa for user-initiated
223   // resizes. This is not what toolkit-views expects, so clamp. Note there is
224   // no check for maximum size (consistent with aura::Window::SetBounds()).
225   gfx::Size clamped_content_size =
226       GetClientSizeForWindowSize(window_, new_bounds.size());
227   clamped_content_size.SetToMax(widget->GetMinimumSize());
229   // A contentRect with zero width or height is a banned practice in ChromeMac,
230   // due to unpredictable OSX treatment.
231   DCHECK(!clamped_content_size.IsEmpty())
232       << "Zero-sized windows not supported on Mac";
234   if (!window_visible_ && widget->IsModal()) {
235     // Window-Modal dialogs (i.e. sheets) are positioned by Cocoa when shown for
236     // the first time. They also have no frame, so just update the content size.
237     [window_ setContentSize:NSMakeSize(clamped_content_size.width(),
238                                        clamped_content_size.height())];
239     return;
240   }
241   gfx::Rect actual_new_bounds(
242       new_bounds.origin(),
243       GetWindowSizeForClientSize(window_, clamped_content_size));
245   if (parent_ && !PositionWindowInScreenCoordinates(widget, widget_type_))
246     actual_new_bounds.Offset(parent_->GetChildWindowOffset());
248   [window_ setFrame:gfx::ScreenRectToNSRect(actual_new_bounds)
249             display:YES
250             animate:NO];
253 void BridgedNativeWidget::SetRootView(views::View* view) {
254   if (view == [bridged_view_ hostedView])
255     return;
257   // If this is ever false, the compositor will need to be properly torn down
258   // and replaced, pointing at the new view.
259   DCHECK(!view || !compositor_widget_);
261   [bridged_view_ clearView];
262   bridged_view_.reset();
263   // Note that there can still be references to the old |bridged_view_|
264   // floating around in Cocoa libraries at this point. However, references to
265   // the old views::View will be gone, so any method calls will become no-ops.
267   if (view) {
268     bridged_view_.reset([[BridgedContentView alloc] initWithView:view]);
269     // Objective C initializers can return nil. However, if |view| is non-NULL
270     // this should be treated as an error and caught early.
271     CHECK(bridged_view_);
272   }
273   [window_ setContentView:bridged_view_];
276 void BridgedNativeWidget::SetVisibilityState(WindowVisibilityState new_state) {
277   // Ensure that:
278   //  - A window with an invisible parent is not made visible.
279   //  - A parent changing visibility updates child window visibility.
280   //    * But only when changed via this function - ignore changes via the
281   //      NSWindow API, or changes propagating out from here.
282   wants_to_be_visible_ = new_state != HIDE_WINDOW;
284   if (new_state == HIDE_WINDOW) {
285     [window_ orderOut:nil];
286     DCHECK(!window_visible_);
287     return;
288   }
290   DCHECK(wants_to_be_visible_);
291   // If the parent (or an ancestor) is hidden, return and wait for it to become
292   // visible.
293   if (parent() && !parent()->IsVisibleParent())
294     return;
296   if (native_widget_mac_->GetWidget()->IsModal()) {
297     NSWindow* parent_window = parent_->GetNSWindow();
298     DCHECK(parent_window);
300     [NSApp beginSheet:window_
301         modalForWindow:parent_window
302          modalDelegate:[window_ delegate]
303         didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:)
304            contextInfo:nullptr];
305     return;
306   }
308   if (new_state == SHOW_AND_ACTIVATE_WINDOW) {
309     [window_ makeKeyAndOrderFront:nil];
310     [NSApp activateIgnoringOtherApps:YES];
311   } else {
312     // ui::SHOW_STATE_INACTIVE is typically used to avoid stealing focus from a
313     // parent window. So, if there's a parent, order above that. Otherwise, this
314     // will order above all windows at the same level.
315     NSInteger parent_window_number = 0;
316     if (parent_)
317       parent_window_number = [parent_->GetNSWindow() windowNumber];
319     [window_ orderWindow:NSWindowAbove
320               relativeTo:parent_window_number];
321   }
322   DCHECK(window_visible_);
325 void BridgedNativeWidget::AcquireCapture() {
326   DCHECK(!HasCapture());
327   if (!window_visible_)
328     return;  // Capture on hidden windows is disallowed.
330   mouse_capture_.reset(new CocoaMouseCapture(this));
332   // Initiating global event capture with addGlobalMonitorForEventsMatchingMask:
333   // will reset the mouse cursor to an arrow. Asking the window for an update
334   // here will restore what we want. However, it can sometimes cause the cursor
335   // to flicker, once, on the initial mouseDown.
336   // TOOD(tapted): Make this unnecessary by only asking for global mouse capture
337   // for the cases that need it (e.g. menus, but not drag and drop).
338   [window_ cursorUpdate:[NSApp currentEvent]];
341 void BridgedNativeWidget::ReleaseCapture() {
342   mouse_capture_.reset();
345 bool BridgedNativeWidget::HasCapture() {
346   return mouse_capture_ && mouse_capture_->IsActive();
349 void BridgedNativeWidget::SetNativeWindowProperty(const char* name,
350                                                   void* value) {
351   NSString* key = [NSString stringWithUTF8String:name];
352   if (value) {
353     [GetWindowProperties() setObject:[NSValue valueWithPointer:value]
354                               forKey:key];
355   } else {
356     [GetWindowProperties() removeObjectForKey:key];
357   }
360 void* BridgedNativeWidget::GetNativeWindowProperty(const char* name) const {
361   NSString* key = [NSString stringWithUTF8String:name];
362   return [[GetWindowProperties() objectForKey:key] pointerValue];
365 void BridgedNativeWidget::SetCursor(NSCursor* cursor) {
366   [window_delegate_ setCursor:cursor];
369 void BridgedNativeWidget::OnWindowWillClose() {
370   if (parent_) {
371     parent_->RemoveChildWindow(this);
372     parent_ = nullptr;
373   }
374   [window_ setDelegate:nil];
375   [[NSNotificationCenter defaultCenter] removeObserver:window_delegate_];
376   native_widget_mac_->OnWindowWillClose();
379 void BridgedNativeWidget::OnFullscreenTransitionStart(
380     bool target_fullscreen_state) {
381   // Note: This can fail for fullscreen changes started externally, but a user
382   // shouldn't be able to do that if the window is invisible to begin with.
383   DCHECK(window_visible_);
385   DCHECK_NE(target_fullscreen_state, target_fullscreen_state_);
386   target_fullscreen_state_ = target_fullscreen_state;
387   in_fullscreen_transition_ = true;
389   // If going into fullscreen, store an answer for GetRestoredBounds().
390   if (target_fullscreen_state)
391     bounds_before_fullscreen_ = gfx::ScreenRectFromNSRect([window_ frame]);
394 void BridgedNativeWidget::OnFullscreenTransitionComplete(
395     bool actual_fullscreen_state) {
396   in_fullscreen_transition_ = false;
398   if (target_fullscreen_state_ == actual_fullscreen_state) {
399     // Ensure constraints are re-applied when completing a transition.
400     OnSizeConstraintsChanged();
401     return;
402   }
404   // First update to reflect reality so that OnTargetFullscreenStateChanged()
405   // expects the change.
406   target_fullscreen_state_ = actual_fullscreen_state;
407   ToggleDesiredFullscreenState();
409   // Usually ToggleDesiredFullscreenState() sets |in_fullscreen_transition_| via
410   // OnFullscreenTransitionStart(). When it does not, it means Cocoa ignored the
411   // toggleFullScreen: request. This can occur when the fullscreen transition
412   // fails and Cocoa is *about* to send windowDidFailToEnterFullScreen:.
413   // Annoyingly, for this case, Cocoa first sends windowDidExitFullScreen:.
414   if (in_fullscreen_transition_)
415     DCHECK_NE(target_fullscreen_state_, actual_fullscreen_state);
418 void BridgedNativeWidget::ToggleDesiredFullscreenState() {
419   // If there is currently an animation into or out of fullscreen, then AppKit
420   // emits the string "not in fullscreen state" to stdio and does nothing. For
421   // this case, schedule a transition back into the desired state when the
422   // animation completes.
423   if (in_fullscreen_transition_) {
424     target_fullscreen_state_ = !target_fullscreen_state_;
425     return;
426   }
428   // Going fullscreen implicitly makes the window visible. AppKit does this.
429   // That is, -[NSWindow isVisible] is always true after a call to -[NSWindow
430   // toggleFullScreen:]. Unfortunately, this change happens after AppKit calls
431   // -[NSWindowDelegate windowWillEnterFullScreen:], and AppKit doesn't send an
432   // orderWindow message. So intercepting the implicit change is hard.
433   // Luckily, to trigger externally, the window typically needs to be visible in
434   // the first place. So we can just ensure the window is visible here instead
435   // of relying on AppKit to do it, and not worry that OnVisibilityChanged()
436   // won't be called for externally triggered fullscreen requests.
437   if (!window_visible_)
438     SetVisibilityState(SHOW_INACTIVE);
440   if (base::mac::IsOSSnowLeopard()) {
441     NOTIMPLEMENTED();
442     return;  // TODO(tapted): Implement this for Snow Leopard.
443   }
445   // Enable fullscreen collection behavior because:
446   // 1: -[NSWindow toggleFullscreen:] would otherwise be ignored,
447   // 2: the fullscreen button must be enabled so the user can leave fullscreen.
448   // This will be reset when a transition out of fullscreen completes.
449   gfx::SetNSWindowCanFullscreen(window_, true);
451   [window_ toggleFullScreen:nil];
454 void BridgedNativeWidget::OnSizeChanged() {
455   gfx::Size new_size = GetClientAreaSize();
456   native_widget_mac_->GetWidget()->OnNativeWidgetSizeChanged(new_size);
457   if (layer())
458     UpdateLayerProperties();
461 void BridgedNativeWidget::OnVisibilityChanged() {
462   OnVisibilityChangedTo([window_ isVisible]);
465 void BridgedNativeWidget::OnVisibilityChangedTo(bool new_visibility) {
466   if (window_visible_ == new_visibility)
467     return;
469   window_visible_ = new_visibility;
471   // If arriving via SetVisible(), |wants_to_be_visible_| should already be set.
472   // If made visible externally (e.g. Cmd+H), just roll with it. Don't try (yet)
473   // to distinguish being *hidden* externally from being hidden by a parent
474   // window - we might not need that.
475   if (window_visible_) {
476     wants_to_be_visible_ = true;
478     if (parent_)
479       [parent_->GetNSWindow() addChildWindow:window_ ordered:NSWindowAbove];
480   } else {
481     mouse_capture_.reset();  // Capture on hidden windows is not permitted.
483     // When becoming invisible, remove the entry in any parent's childWindow
484     // list. Cocoa's childWindow management breaks down when child windows are
485     // hidden.
486     if (parent_)
487       [parent_->GetNSWindow() removeChildWindow:window_];
488   }
490   // TODO(tapted): Investigate whether we want this for Mac. This is what Aura
491   // does, and it is what tests expect. However, because layer drawing is
492   // asynchronous (and things like deminiaturize in AppKit are not), it can
493   // result in a CALayer appearing on screen before it has been redrawn in the
494   // GPU process. This is a general problem. In content, a helper class,
495   // RenderWidgetResizeHelper, blocks the UI thread in -[NSView setFrameSize:]
496   // and RenderWidgetHostView::Show() until a frame is ready.
497   if (layer()) {
498     layer()->SetVisible(window_visible_);
499     layer()->SchedulePaint(gfx::Rect(GetClientAreaSize()));
500   }
502   NotifyVisibilityChangeDown();
504   native_widget_mac_->GetWidget()->OnNativeWidgetVisibilityChanged(
505       window_visible_);
507   // Toolkit-views suppresses redraws while not visible. To prevent Cocoa asking
508   // for an "empty" draw, disable auto-display while hidden. For example, this
509   // prevents Cocoa drawing just *after* a minimize, resulting in a blank window
510   // represented in the deminiaturize animation.
511   [window_ setAutodisplay:window_visible_];
514 void BridgedNativeWidget::OnBackingPropertiesChanged() {
515   if (layer())
516     UpdateLayerProperties();
519 void BridgedNativeWidget::OnWindowKeyStatusChangedTo(bool is_key) {
520   Widget* widget = native_widget_mac()->GetWidget();
521   widget->OnNativeWidgetActivationChanged(is_key);
522   // The contentView is the BridgedContentView hosting the views::RootView. The
523   // focus manager will already know if a native subview has focus.
524   if ([window_ contentView] == [window_ firstResponder]) {
525     if (is_key) {
526       widget->OnNativeFocus();
527       widget->GetFocusManager()->RestoreFocusedView();
528     } else {
529       widget->OnNativeBlur();
530       widget->GetFocusManager()->StoreFocusedView(true);
531     }
532   }
535 void BridgedNativeWidget::OnSizeConstraintsChanged() {
536   // Don't modify the size constraints or fullscreen collection behavior while
537   // in fullscreen or during a transition. OnFullscreenTransitionComplete will
538   // reset these after leaving fullscreen.
539   if (target_fullscreen_state_ || in_fullscreen_transition_)
540     return;
542   Widget* widget = native_widget_mac()->GetWidget();
543   gfx::Size min_size = widget->GetMinimumSize();
544   gfx::Size max_size = widget->GetMaximumSize();
545   bool is_resizable = widget->widget_delegate()->CanResize();
546   bool shows_resize_controls =
547       is_resizable && (min_size.IsEmpty() || min_size != max_size);
548   bool shows_fullscreen_controls =
549       is_resizable && widget->widget_delegate()->CanMaximize();
551   gfx::ApplyNSWindowSizeConstraints(window_, min_size, max_size,
552                                     shows_resize_controls,
553                                     shows_fullscreen_controls);
556 InputMethod* BridgedNativeWidget::CreateInputMethod() {
557   if (switches::IsTextInputFocusManagerEnabled())
558     return new NullInputMethod();
560   return new InputMethodBridge(this, GetHostInputMethod(), true);
563 ui::InputMethod* BridgedNativeWidget::GetHostInputMethod() {
564   if (!input_method_) {
565     // Delegate is NULL because Mac IME does not need DispatchKeyEventPostIME
566     // callbacks.
567     input_method_ = ui::CreateInputMethod(NULL, nil);
568   }
569   return input_method_.get();
572 gfx::Rect BridgedNativeWidget::GetRestoredBounds() const {
573   if (target_fullscreen_state_ || in_fullscreen_transition_)
574     return bounds_before_fullscreen_;
576   return gfx::ScreenRectFromNSRect([window_ frame]);
579 void BridgedNativeWidget::CreateLayer(ui::LayerType layer_type,
580                                       bool translucent) {
581   DCHECK(bridged_view_);
582   DCHECK(!layer());
584   CreateCompositor();
585   DCHECK(compositor_);
587   SetLayer(new ui::Layer(layer_type));
588   // Note, except for controls, this will set the layer to be hidden, since it
589   // is only called during Init().
590   layer()->SetVisible(window_visible_);
591   layer()->set_delegate(this);
593   InitCompositor();
595   // Transparent window support.
596   layer()->GetCompositor()->SetHostHasTransparentBackground(translucent);
597   layer()->SetFillsBoundsOpaquely(!translucent);
598   if (translucent) {
599     [window_ setOpaque:NO];
600     [window_ setBackgroundColor:[NSColor clearColor]];
601   }
603   UpdateLayerProperties();
606 ////////////////////////////////////////////////////////////////////////////////
607 // BridgedNativeWidget, internal::InputMethodDelegate:
609 void BridgedNativeWidget::DispatchKeyEventPostIME(const ui::KeyEvent& key) {
610   DCHECK(focus_manager_);
611   native_widget_mac_->GetWidget()->OnKeyEvent(const_cast<ui::KeyEvent*>(&key));
612   if (!key.handled())
613     focus_manager_->OnKeyEvent(key);
616 ////////////////////////////////////////////////////////////////////////////////
617 // BridgedNativeWidget, CocoaMouseCaptureDelegate:
619 void BridgedNativeWidget::PostCapturedEvent(NSEvent* event) {
620   [bridged_view_ processCapturedMouseEvent:event];
623 void BridgedNativeWidget::OnMouseCaptureLost() {
624   native_widget_mac_->GetWidget()->OnMouseCaptureLost();
627 ////////////////////////////////////////////////////////////////////////////////
628 // BridgedNativeWidget, FocusChangeListener:
630 void BridgedNativeWidget::OnWillChangeFocus(View* focused_before,
631                                             View* focused_now) {
634 void BridgedNativeWidget::OnDidChangeFocus(View* focused_before,
635                                            View* focused_now) {
636   ui::TextInputClient* input_client =
637       focused_now ? focused_now->GetTextInputClient() : NULL;
638   [bridged_view_ setTextInputClient:input_client];
641 ////////////////////////////////////////////////////////////////////////////////
642 // BridgedNativeWidget, LayerDelegate:
644 void BridgedNativeWidget::OnPaintLayer(const ui::PaintContext& context) {
645   DCHECK(window_visible_);
646   native_widget_mac_->GetWidget()->OnNativeWidgetPaint(context);
649 void BridgedNativeWidget::OnDelegatedFrameDamage(
650     const gfx::Rect& damage_rect_in_dip) {
651   NOTIMPLEMENTED();
654 void BridgedNativeWidget::OnDeviceScaleFactorChanged(
655     float device_scale_factor) {
656   NOTIMPLEMENTED();
659 base::Closure BridgedNativeWidget::PrepareForLayerBoundsChange() {
660   NOTIMPLEMENTED();
661   return base::Closure();
664 ////////////////////////////////////////////////////////////////////////////////
665 // BridgedNativeWidget, AcceleratedWidgetMac:
667 NSView* BridgedNativeWidget::AcceleratedWidgetGetNSView() const {
668   return compositor_superview_;
671 bool BridgedNativeWidget::AcceleratedWidgetShouldIgnoreBackpressure() const {
672   return true;
675 void BridgedNativeWidget::AcceleratedWidgetSwapCompleted(
676     const std::vector<ui::LatencyInfo>& latency_info) {
679 void BridgedNativeWidget::AcceleratedWidgetHitError() {
680   compositor_->ScheduleFullRedraw();
683 ////////////////////////////////////////////////////////////////////////////////
684 // BridgedNativeWidget, BridgedNativeWidgetOwner:
686 NSWindow* BridgedNativeWidget::GetNSWindow() {
687   return window_;
690 gfx::Vector2d BridgedNativeWidget::GetChildWindowOffset() const {
691   return gfx::ScreenRectFromNSRect([window_ frame]).OffsetFromOrigin();
694 bool BridgedNativeWidget::IsVisibleParent() const {
695   return parent_ ? window_visible_ && parent_->IsVisibleParent()
696                  : window_visible_;
699 void BridgedNativeWidget::RemoveChildWindow(BridgedNativeWidget* child) {
700   auto location = std::find(
701       child_windows_.begin(), child_windows_.end(), child);
702   DCHECK(location != child_windows_.end());
703   child_windows_.erase(location);
705   // Note the child is sometimes removed already by AppKit. This depends on OS
706   // version, and possibly some unpredictable reference counting. Removing it
707   // here should be safe regardless.
708   [window_ removeChildWindow:child->window_];
711 ////////////////////////////////////////////////////////////////////////////////
712 // BridgedNativeWidget, private:
714 void BridgedNativeWidget::RemoveOrDestroyChildren() {
715   // TODO(tapted): Implement unowned child windows if required.
716   while (!child_windows_.empty()) {
717     // The NSWindow can only be destroyed after -[NSWindow close] is complete.
718     // Retain the window, otherwise the reference count can reach zero when the
719     // child calls back into RemoveChildWindow() via its OnWindowWillClose().
720     base::scoped_nsobject<NSWindow> child(
721         [child_windows_.back()->ns_window() retain]);
722     [child close];
723   }
726 void BridgedNativeWidget::NotifyVisibilityChangeDown() {
727   // Child windows sometimes like to close themselves in response to visibility
728   // changes. That's supported, but only with the asynchronous Widget::Close().
729   // Perform a heuristic to detect child removal that would break these loops.
730   const size_t child_count = child_windows_.size();
731   if (!window_visible_) {
732     for (BridgedNativeWidget* child : child_windows_) {
733       if (child->window_visible_)
734         [child->ns_window() orderOut:nil];
736       DCHECK(!child->window_visible_);
737       CHECK_EQ(child_count, child_windows_.size());
738     }
739     // The orderOut calls above should result in a call to OnVisibilityChanged()
740     // in each child. There, children will remove themselves from the NSWindow
741     // childWindow list as well as propagate NotifyVisibilityChangeDown() calls
742     // to any children of their own.
743     DCHECK_EQ(0u, [[window_ childWindows] count]);
744     return;
745   }
747   NSUInteger visible_children = 0;  // For a DCHECK below.
748   NSInteger parent_window_number = [window_ windowNumber];
749   for (BridgedNativeWidget* child: child_windows_) {
750     // Note: order the child windows on top, regardless of whether or not they
751     // are currently visible. They probably aren't, since the parent was hidden
752     // prior to this, but they could have been made visible in other ways.
753     if (child->wants_to_be_visible_) {
754       ++visible_children;
755       // Here -[NSWindow orderWindow:relativeTo:] is used to put the window on
756       // screen. However, that by itself is insufficient to guarantee a correct
757       // z-order relationship. If this function is being called from a z-order
758       // change in the parent, orderWindow turns out to be unreliable (i.e. the
759       // ordering doesn't always take effect). What this actually relies on is
760       // the resulting call to OnVisibilityChanged() in the child, which will
761       // then insert itself into -[NSWindow childWindows] to let Cocoa do its
762       // internal layering magic.
763       [child->ns_window() orderWindow:NSWindowAbove
764                            relativeTo:parent_window_number];
765       DCHECK(child->window_visible_);
766     }
767     CHECK_EQ(child_count, child_windows_.size());
768   }
769   DCHECK_EQ(visible_children, [[window_ childWindows] count]);
772 gfx::Size BridgedNativeWidget::GetClientAreaSize() const {
773   NSRect content_rect = [window_ contentRectForFrameRect:[window_ frame]];
774   return gfx::Size(NSWidth(content_rect), NSHeight(content_rect));
777 void BridgedNativeWidget::CreateCompositor() {
778   DCHECK(!compositor_);
779   DCHECK(!compositor_widget_);
780   DCHECK(ViewsDelegate::views_delegate);
782   ui::ContextFactory* context_factory =
783       ViewsDelegate::views_delegate->GetContextFactory();
784   DCHECK(context_factory);
786   AddCompositorSuperview();
788   // TODO(tapted): Get this value from GpuDataManagerImpl via ViewsDelegate.
789   bool needs_gl_finish_workaround = false;
791   compositor_widget_.reset(
792       new ui::AcceleratedWidgetMac(needs_gl_finish_workaround));
793   compositor_.reset(new ui::Compositor(compositor_widget_->accelerated_widget(),
794                                        context_factory,
795                                        base::ThreadTaskRunnerHandle::Get()));
796   compositor_widget_->SetNSView(this);
799 void BridgedNativeWidget::InitCompositor() {
800   DCHECK(layer());
801   float scale_factor = GetDeviceScaleFactorFromView(compositor_superview_);
802   gfx::Size size_in_dip = GetClientAreaSize();
803   compositor_->SetScaleAndSize(scale_factor,
804                                ConvertSizeToPixel(scale_factor, size_in_dip));
805   compositor_->SetRootLayer(layer());
808 void BridgedNativeWidget::DestroyCompositor() {
809   if (layer())
810     layer()->set_delegate(nullptr);
811   DestroyLayer();
813   if (!compositor_widget_) {
814     DCHECK(!compositor_);
815     return;
816   }
817   compositor_widget_->ResetNSView();
818   compositor_.reset();
819   compositor_widget_.reset();
822 void BridgedNativeWidget::AddCompositorSuperview() {
823   DCHECK(!compositor_superview_);
824   compositor_superview_.reset(
825       [[ViewsCompositorSuperview alloc] initWithFrame:[bridged_view_ bounds]]);
827   // Size and resize automatically with |bridged_view_|.
828   [compositor_superview_
829       setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
831   // Enable HiDPI backing when supported (only on 10.7+).
832   if ([compositor_superview_ respondsToSelector:
833       @selector(setWantsBestResolutionOpenGLSurface:)]) {
834     [compositor_superview_ setWantsBestResolutionOpenGLSurface:YES];
835   }
837   base::scoped_nsobject<CALayer> background_layer([[CALayer alloc] init]);
838   [background_layer
839       setAutoresizingMask:kCALayerWidthSizable | kCALayerHeightSizable];
841   // Set the layer first to create a layer-hosting view (not layer-backed).
842   [compositor_superview_ setLayer:background_layer];
843   [compositor_superview_ setWantsLayer:YES];
845   // The UI compositor should always be the first subview, to ensure webviews
846   // are drawn on top of it.
847   DCHECK_EQ(0u, [[bridged_view_ subviews] count]);
848   [bridged_view_ addSubview:compositor_superview_];
851 void BridgedNativeWidget::UpdateLayerProperties() {
852   DCHECK(layer());
853   DCHECK(compositor_superview_);
854   gfx::Size size_in_dip = GetClientAreaSize();
855   layer()->SetBounds(gfx::Rect(size_in_dip));
857   float scale_factor = GetDeviceScaleFactorFromView(compositor_superview_);
858   compositor_->SetScaleAndSize(scale_factor,
859                                ConvertSizeToPixel(scale_factor, size_in_dip));
862 NSMutableDictionary* BridgedNativeWidget::GetWindowProperties() const {
863   NSMutableDictionary* properties = objc_getAssociatedObject(
864       window_, &kWindowPropertiesKey);
865   if (!properties) {
866     properties = [NSMutableDictionary dictionary];
867     objc_setAssociatedObject(window_, &kWindowPropertiesKey,
868                              properties, OBJC_ASSOCIATION_RETAIN);
869   }
870   return properties;
873 }  // namespace views