always_on_top_controller.cc revision a36e5920737c6adbddd3e43b760e5de8431db6e0
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) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ash/wm/always_on_top_controller.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles)#include "ash/shell.h" 8a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles)#include "ash/shell_window_ids.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ash/wm/property_util.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ash/wm/workspace_controller.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/aura/client/aura_constants.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/aura/window.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace ash { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace internal { 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)AlwaysOnTopController::AlwaysOnTopController() 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : always_on_top_container_(NULL) { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)AlwaysOnTopController::~AlwaysOnTopController() { 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (always_on_top_container_) 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) always_on_top_container_->RemoveObserver(this); 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void AlwaysOnTopController::SetAlwaysOnTopContainer( 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) aura::Window* always_on_top_container) { 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Container should be empty. 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(always_on_top_container->children().empty()); 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We are not handling any containers yet. 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(always_on_top_container_ == NULL); 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) always_on_top_container_ = always_on_top_container; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) always_on_top_container_->AddObserver(this); 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)aura::Window* AlwaysOnTopController::GetContainer(aura::Window* window) const { 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(always_on_top_container_); 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (window->GetProperty(aura::client::kAlwaysOnTopKey)) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return always_on_top_container_; 42a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) return Shell::GetContainer(always_on_top_container_->GetRootWindow(), 43a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) kShellWindowId_WorkspaceContainer); 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void AlwaysOnTopController::OnWindowAdded(aura::Window* child) { 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Observe direct child of the containers. 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (child->parent() == always_on_top_container_) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) child->AddObserver(this); 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void AlwaysOnTopController::OnWillRemoveWindow(aura::Window* child) { 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) child->RemoveObserver(this); 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void AlwaysOnTopController::OnWindowPropertyChanged(aura::Window* window, 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const void* key, 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) intptr_t old) { 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (key == aura::client::kAlwaysOnTopKey) { 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(window->type() == aura::client::WINDOW_TYPE_NORMAL || 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) window->type() == aura::client::WINDOW_TYPE_POPUP); 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) aura::Window* container = GetContainer(window); 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (window->parent() != container) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) container->AddChild(window); 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void AlwaysOnTopController::OnWindowDestroyed(aura::Window* window) { 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (window == always_on_top_container_) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) always_on_top_container_ = NULL; 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace internal 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace ash 75