blob: 9869ed5a93869301df03c9b5b22d3ee2d2530dda [file] [log] [blame]
// 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.
namespace gfx {
class Vector2d;
@class NSWindow;
namespace views {
class BridgedNativeWidget;
// An abstract interface wrapping an NSWindow that ties the lifetime of one or
// more child BridgedNativeWidgets to the lifetime of that NSWindow. This is not
// simply an NSWindow, because the child window API provided by NSWindow
// requires child windows to always be visible.
class BridgedNativeWidgetOwner {
// The NSWindow parent.
virtual NSWindow* GetNSWindow() = 0;
// The offset in screen pixels for positioning child windows owned by |this|.
virtual gfx::Vector2d GetChildWindowOffset() const = 0;
// Return false if |this| is hidden, or has a hidden ancestor.
virtual bool IsVisibleParent() const = 0;
// Removes a child window. Note |this| may be deleted after calling, so the
// caller should immediately null out the pointer used to make the call.
virtual void RemoveChildWindow(BridgedNativeWidget* child) = 0;
// Instances of this class may be self-deleting.
virtual ~BridgedNativeWidgetOwner() {}
} // namespace views