blob: 3ab44dc0951bcf91b44ef5b330da7c2b442964dd [file] [log] [blame]
// Copyright 2018 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.
#include <vector>
#include "base/callback.h"
#include "base/macros.h"
#include "ui/aura/window_observer.h"
namespace aura_extra {
// WindowPositionInRootMonitor notifies a callback any time the position of a
// window, relative to the root, changes. Changes are only sent when attached
// to a valid root.
class WindowPositionInRootMonitor : public aura::WindowObserver {
WindowPositionInRootMonitor(aura::Window* window,
base::RepeatingClosure callback);
~WindowPositionInRootMonitor() override;
// Adds |window| and all its ancestors to |ancestors_|.
void AddAncestors(aura::Window* window);
// aura::WindowObserver:
void OnWindowDestroyed(aura::Window* window) override;
void OnWindowParentChanged(aura::Window* window,
aura::Window* parent) override;
void OnWindowBoundsChanged(aura::Window* window,
const gfx::Rect& old_bounds,
const gfx::Rect& new_bounds,
ui::PropertyChangeReason reason) override;
base::RepeatingClosure callback_;
// The windows being watched. This contains the window supplied to the
// constructor and all it's ancestors. This is empty if the window is deleted.
std::vector<aura::Window*> ancestors_;
} // namespace aura_extra