| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #import "ui/views/cocoa/widget_owner_nswindow_adapter.h" |
| |
| #import <Cocoa/Cocoa.h> |
| |
| #include "base/logging.h" |
| #include "base/mac/sdk_forward_declarations.h" |
| #include "ui/gfx/geometry/rect.h" |
| #include "ui/gfx/geometry/vector2d.h" |
| #import "ui/gfx/mac/coordinate_conversion.h" |
| #import "ui/views/cocoa/bridged_native_widget.h" |
| |
| // Bridges an AppKit observer to observe when the (non-views) NSWindow owning a |
| // views::Widget will close or change occlusion state. |
| @interface WidgetOwnerNSWindowAdapterBridge : NSObject { |
| @private |
| views::WidgetOwnerNSWindowAdapter* adapter_; // Weak. Owns us. |
| } |
| - (instancetype)initWithAdapter:(views::WidgetOwnerNSWindowAdapter*)adapter; |
| - (void)windowWillClose:(NSNotification*)notification; |
| - (void)windowDidChangeOcclusionState:(NSNotification*)notification; |
| @end |
| |
| @implementation WidgetOwnerNSWindowAdapterBridge |
| |
| - (instancetype)initWithAdapter:(views::WidgetOwnerNSWindowAdapter*)adapter { |
| if ((self = [super init])) |
| adapter_ = adapter; |
| return self; |
| } |
| |
| - (void)windowWillClose:(NSNotification*)notification { |
| adapter_->OnWindowWillClose(); |
| } |
| |
| - (void)windowDidChangeOcclusionState:(NSNotification*)notification { |
| adapter_->OnWindowDidChangeOcclusionState(); |
| } |
| |
| @end |
| |
| namespace views { |
| |
| WidgetOwnerNSWindowAdapter::WidgetOwnerNSWindowAdapter( |
| BridgedNativeWidget* child, |
| NSView* anchor_view) |
| : child_(child), |
| anchor_view_([anchor_view retain]), |
| observer_bridge_( |
| [[WidgetOwnerNSWindowAdapterBridge alloc] initWithAdapter:this]) { |
| |
| // Although the |anchor_view| must be in an NSWindow when the child dialog is |
| // created, it's permitted for the |anchor_view| to be removed from its view |
| // hierarchy before the child dialog window is fully removed from screen. When |
| // this happens, [anchor_view_ window] will become nil, so retain both. |
| anchor_window_.reset([[anchor_view_ window] retain]); |
| DCHECK(anchor_window_); |
| |
| [[NSNotificationCenter defaultCenter] |
| addObserver:observer_bridge_ |
| selector:@selector(windowWillClose:) |
| name:NSWindowWillCloseNotification |
| object:anchor_window_]; |
| |
| // BridgedNativeWidget removes NSWindow parent/child relationships for hidden |
| // windows. Observe when the parent's visibility changes so they can be |
| // reconnected. |
| [[NSNotificationCenter defaultCenter] |
| addObserver:observer_bridge_ |
| selector:@selector(windowDidChangeOcclusionState:) |
| name:NSWindowDidChangeOcclusionStateNotification |
| object:anchor_window_]; |
| } |
| |
| void WidgetOwnerNSWindowAdapter::OnWindowWillClose() { |
| // Retain the child window before closing it. If the last reference to the |
| // NSWindow goes away inside -[NSWindow close], then bad stuff can happen. |
| // See e.g. http://crbug.com/616701. |
| base::scoped_nsobject<NSWindow> child_window(child_->ns_window(), |
| base::scoped_policy::RETAIN); |
| |
| // AppKit child window relationships break when the windows are not visible, |
| // so if the child is not visible, it won't currently be a child. |
| if (![child_window isVisible]) |
| DCHECK(![child_window parentWindow] && ![child_window sheetParent]); |
| DCHECK([child_window delegate]); |
| |
| [child_window close]; |
| // Note: |this| will be deleted here. |
| |
| DCHECK(![child_window parentWindow]); |
| DCHECK(![child_window delegate]); |
| } |
| |
| void WidgetOwnerNSWindowAdapter::OnWindowDidChangeOcclusionState() { |
| // The adapter only needs to handle a parent "show", since the only way it |
| // should be hidden is via -[NSApp hide], and all BridgedNativeWidgets |
| // subscribe to NSApplicationDidHideNotification already. |
| if (![anchor_window_ isVisible]) |
| return; |
| |
| if (child_->window_visible()) { |
| // A sheet should never have a parentWindow, otherwise dismissing the sheet |
| // causes graphical glitches (http://crbug.com/605098). Non-sheets should |
| // always have a parentWindow. |
| DCHECK([child_->ns_window() isSheet] != |
| !![child_->ns_window() parentWindow]); |
| DCHECK(child_->wants_to_be_visible()); |
| return; |
| } |
| |
| // The parent relationship should have been removed when the child was hidden. |
| DCHECK(![child_->ns_window() parentWindow]); |
| if (!child_->wants_to_be_visible()) |
| return; |
| |
| [child_->ns_window() orderWindow:NSWindowAbove |
| relativeTo:[anchor_window_ windowNumber]]; |
| |
| // Ordering the window should add back the relationship (unless it's a sheet). |
| DCHECK([child_->ns_window() isSheet] != !![child_->ns_window() parentWindow]); |
| DCHECK(child_->window_visible()); |
| } |
| |
| NSWindow* WidgetOwnerNSWindowAdapter::GetNSWindow() { |
| return anchor_window_; |
| } |
| |
| gfx::Vector2d WidgetOwnerNSWindowAdapter::GetChildWindowOffset() const { |
| NSRect rect_in_window = |
| [anchor_view_ convertRect:[anchor_view_ bounds] toView:nil]; |
| NSRect rect_in_screen = [anchor_window_ convertRectToScreen:rect_in_window]; |
| // Ensure we anchor off the top-left of |anchor_view_| (rect_in_screen.origin |
| // is the bottom-left of the view). |
| NSPoint anchor_in_screen = |
| NSMakePoint(NSMinX(rect_in_screen), NSMaxY(rect_in_screen)); |
| return gfx::ScreenPointFromNSPoint(anchor_in_screen).OffsetFromOrigin(); |
| } |
| |
| bool WidgetOwnerNSWindowAdapter::IsVisibleParent() const { |
| return [anchor_window_ isVisible]; |
| } |
| |
| void WidgetOwnerNSWindowAdapter::RemoveChildWindow(BridgedNativeWidget* child) { |
| DCHECK_EQ(child, child_); |
| [GetNSWindow() removeChildWindow:child->ns_window()]; |
| delete this; |
| } |
| |
| WidgetOwnerNSWindowAdapter::~WidgetOwnerNSWindowAdapter() { |
| [[NSNotificationCenter defaultCenter] removeObserver:observer_bridge_]; |
| } |
| |
| } // namespace views |