chrome/browser/ui/aura/native_window_tracker_aura.cc

// Copyright 2014 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 "chrome/browser/ui/aura/native_window_tracker_aura.h"

#include "ui/aura/window.h"

NativeWindowTrackerAura::NativeWindowTrackerAura(
    gfx::NativeWindow window)
    : window_(window) {
  window->AddObserver(this);
}

NativeWindowTrackerAura::~NativeWindowTrackerAura() {
  if (window_)
    window_->RemoveObserver(this);
}

bool NativeWindowTrackerAura::WasNativeWindowClosed() const {
  return window_ == nullptr;
}

void NativeWindowTrackerAura::OnWindowDestroying(
    aura::Window* window) {
  window_->RemoveObserver(this);
  window_ = nullptr;
}

// static
std::unique_ptr<NativeWindowTracker> NativeWindowTracker::Create(
    gfx::NativeWindow window) {
  return std::unique_ptr<NativeWindowTracker>(
      new NativeWindowTrackerAura(window));
}