ui/views/cocoa/widget_owner_nswindow_adapter.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_VIEWS_COCOA_WIDGET_OWNER_NSWINDOW_ADAPTER_H_
   6 #define UI_VIEWS_COCOA_WIDGET_OWNER_NSWINDOW_ADAPTER_H_
   7
   8 #import "base/mac/scoped_nsobject.h"
   9 #import "ui/views/cocoa/bridged_native_widget_owner.h"
  10
  11 @class NSView;
  12 @class NSWindow;
  13 @class WidgetOwnerNSWindowAdapterBridge;
  14
  15 namespace views {
  16
  17 // An adapter that allows a views::Widget to be owned by an NSWindow that is not
  18 // backed by another BridgedNativeWidget.
  19 class WidgetOwnerNSWindowAdapter : public BridgedNativeWidgetOwner {
  20  public:
  21   // Create an adapter that will own |child|, tying its lifetime with the
  22   // NSWindow containing |anchor_view|. The object is self-deleting, via a call
  23   // to RemoveChildWindow() made in child->OnWindowWillClose().
  24   WidgetOwnerNSWindowAdapter(BridgedNativeWidget* child, NSView* anchor_view);
  25
  26   // Called when the owning window is closing.
  27   void OnWindowWillClose();
  28
  29   // Overridden from BridgedNativeWidgetOwner:
  30   NSWindow* GetNSWindow() override;
  31   gfx::Vector2d GetChildWindowOffset() const override;
  32   bool IsVisibleParent() const override;
  33   void RemoveChildWindow(BridgedNativeWidget* child) override;
  34
  35  private:
  36   // Self-deleting.
  37   ~WidgetOwnerNSWindowAdapter() override;
  38
  39   BridgedNativeWidget* child_;  // Weak. Owned by its NativeWidgetMac.
  40   base::scoped_nsobject<NSView> anchor_view_;
  41   base::scoped_nsobject<NSWindow> anchor_window_;
  42   base::scoped_nsobject<WidgetOwnerNSWindowAdapterBridge> observer_bridge_;
  43
  44   DISALLOW_COPY_AND_ASSIGN(WidgetOwnerNSWindowAdapter);
  45 };
  46
  47 }  // namespace views
  48
  49 #endif  // UI_VIEWS_COCOA_WIDGET_OWNER_NSWINDOW_ADAPTER_H_