blob: 5c73488cbdf6b4ffeec8c0fbe2798c31a3f031f7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
// 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 "ui/aura_shell/always_on_top_controller.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/window.h"
#include "ui/aura/window_types.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::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::kAlwaysOnTopKey) {
DCHECK(window->type() == aura::WINDOW_TYPE_NORMAL ||
window->type() == aura::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
|
