15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#ifndef UI_AURA_WINDOW_TRACKER_H_ 6f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#define UI_AURA_WINDOW_TRACKER_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <set> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/compiler_specific.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/aura/aura_export.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/aura/window_observer.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace aura { 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This class keeps track of a set of windows. A Window is removed either 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// explicitly by Remove(), or implicitly when the window is destroyed. 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class AURA_EXPORT WindowTracker : public WindowObserver { 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef std::set<Window*> Windows; 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WindowTracker(); 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~WindowTracker(); 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the set of windows being observed. 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::set<Window*>& windows() const { return windows_; } 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Adds |window| to the set of Windows being tracked. 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Add(Window* window); 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Removes |window| from the set of windows being tracked. 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Remove(Window* window); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if |window| was previously added and has not been removed or 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // deleted. 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool Contains(Window* window); 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // WindowObserver overrides: 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void OnWindowDestroying(Window* window) OVERRIDE; 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Windows windows_; 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(WindowTracker); 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace aura 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 50f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#endif // UI_AURA_WINDOW_TRACKER_H_ 51