| // Copyright (c) 2012 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 "ui/aura/window_tracker.h" |
| |
| #include "ui/aura/window.h" |
| |
| namespace aura { |
| |
| WindowTracker::WindowTracker() { |
| } |
| |
| WindowTracker::WindowTracker(const WindowList& windows) { |
| // |windows| may contain dups, so call Add() instead of insert(). |
| for (auto iter = windows.begin(); iter != windows.end(); iter++) |
| Add(*iter); |
| } |
| |
| WindowTracker::~WindowTracker() { |
| while (has_windows()) |
| Pop()->RemoveObserver(this); |
| } |
| |
| void WindowTracker::Add(Window* window) { |
| if (Contains(window)) |
| return; |
| |
| window->AddObserver(this); |
| windows_.push_back(window); |
| } |
| |
| void WindowTracker::Remove(Window* window) { |
| auto iter = std::find(windows_.begin(), windows_.end(), window); |
| if (iter != windows_.end()) { |
| windows_.erase(iter); |
| window->RemoveObserver(this); |
| } |
| } |
| |
| bool WindowTracker::Contains(Window* window) { |
| return std::find(windows_.begin(), windows_.end(), window) != windows_.end(); |
| } |
| |
| aura::Window* WindowTracker::Pop() { |
| DCHECK(!windows_.empty()); |
| aura::Window* window = *windows_.begin(); |
| Remove(window); |
| return window; |
| } |
| |
| void WindowTracker::OnWindowDestroying(Window* window) { |
| DCHECK(Contains(window)); |
| Remove(window); |
| } |
| |
| } // namespace aura |