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author | ben@chromium.org <ben@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-12-23 01:04:56 +0000 |
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committer | ben@chromium.org <ben@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-12-23 01:04:56 +0000 |
commit | 7585967a09c178beb19d154411e16d0bf460b98c (patch) | |
tree | cc081a045d88728d3ec1afccdf603278f9a9fd6a /ash/wm/always_on_top_controller.cc | |
parent | 7d578660a7d482216efbac91434fd30bb122a154 (diff) | |
download | chromium_src-7585967a09c178beb19d154411e16d0bf460b98c.zip chromium_src-7585967a09c178beb19d154411e16d0bf460b98c.tar.gz chromium_src-7585967a09c178beb19d154411e16d0bf460b98c.tar.bz2 |
Move some more files into ash... this time seed the window manager dir.
http://crbug.com/108457
TEST=none
TBR=sky
Review URL: http://codereview.chromium.org/9026017
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@115655 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'ash/wm/always_on_top_controller.cc')
-rw-r--r-- | ash/wm/always_on_top_controller.cc | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/ash/wm/always_on_top_controller.cc b/ash/wm/always_on_top_controller.cc new file mode 100644 index 0000000..fcf160b --- /dev/null +++ b/ash/wm/always_on_top_controller.cc @@ -0,0 +1,79 @@ +// Copyright (c) 2011 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 "ash/wm/always_on_top_controller.h" + +#include "ui/aura/client/aura_constants.h" +#include "ui/aura/window.h" + +namespace aura_shell { +namespace internal { + +AlwaysOnTopController::AlwaysOnTopController() + : default_container_(NULL), + always_on_top_container_(NULL) { +} + +AlwaysOnTopController::~AlwaysOnTopController() { + if (default_container_) + default_container_->RemoveObserver(this); + if (always_on_top_container_) + always_on_top_container_->RemoveObserver(this); +} + +void AlwaysOnTopController::SetContainers(aura::Window* default_container, + aura::Window* always_on_top_container) { + // Both containers should have no children. + DCHECK(default_container->children().empty()); + DCHECK(always_on_top_container->children().empty()); + + // We are not handling any containers yet. + DCHECK(default_container_ == NULL && always_on_top_container_ == NULL); + + default_container_ = default_container; + default_container_->AddObserver(this); + + always_on_top_container_ = always_on_top_container; + always_on_top_container_->AddObserver(this); +} + +aura::Window* AlwaysOnTopController::GetContainer(aura::Window* window) const { + DCHECK(default_container_ && always_on_top_container_); + return !window->GetProperty(aura::client::kAlwaysOnTopKey) ? + default_container_ : always_on_top_container_; +} + +void AlwaysOnTopController::OnWindowAdded(aura::Window* child) { + // Observe direct child of the containers. + if (child->parent() == default_container_ || + child->parent() == always_on_top_container_) { + child->AddObserver(this); + } +} + +void AlwaysOnTopController::OnWillRemoveWindow(aura::Window* child) { + child->RemoveObserver(this); +} + +void AlwaysOnTopController::OnWindowPropertyChanged(aura::Window* window, + const char* name, + void* old) { + if (name == aura::client::kAlwaysOnTopKey) { + DCHECK(window->type() == aura::client::WINDOW_TYPE_NORMAL || + window->type() == aura::client::WINDOW_TYPE_POPUP); + aura::Window* container = GetContainer(window); + if (window->parent() != container) + container->AddChild(window); + } +} + +void AlwaysOnTopController::OnWindowDestroyed(aura::Window* window) { + if (window == default_container_) + default_container_ = NULL; + if (window == always_on_top_container_) + always_on_top_container_ = NULL; +} + +} // namespace internal +} // namespace aura_shell |