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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
// 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/env.h"
#include "base/command_line.h"
#include "base/message_loop/message_pump_dispatcher.h"
#include "ui/aura/env_observer.h"
#include "ui/aura/input_state_lookup.h"
#include "ui/aura/window.h"
#include "ui/compositor/compositor.h"
#include "ui/compositor/compositor_switches.h"
#include "ui/events/event_target_iterator.h"
namespace aura {
// static
Env* Env::instance_ = NULL;
////////////////////////////////////////////////////////////////////////////////
// Env, public:
Env::Env()
: mouse_button_flags_(0),
is_touch_down_(false),
input_state_lookup_(InputStateLookup::Create().Pass()) {
}
Env::~Env() {
FOR_EACH_OBSERVER(EnvObserver, observers_, OnWillDestroyEnv());
ui::Compositor::Terminate();
}
//static
void Env::CreateInstance() {
if (!instance_) {
instance_ = new Env;
instance_->Init();
}
}
// static
Env* Env::GetInstance() {
DCHECK(instance_) << "Env::CreateInstance must be called before getting "
"the instance of Env.";
return instance_;
}
// static
void Env::DeleteInstance() {
delete instance_;
instance_ = NULL;
}
void Env::AddObserver(EnvObserver* observer) {
observers_.AddObserver(observer);
}
void Env::RemoveObserver(EnvObserver* observer) {
observers_.RemoveObserver(observer);
}
bool Env::IsMouseButtonDown() const {
return input_state_lookup_.get() ? input_state_lookup_->IsMouseButtonDown() :
mouse_button_flags_ != 0;
}
////////////////////////////////////////////////////////////////////////////////
// Env, private:
void Env::Init() {
ui::Compositor::Initialize();
}
void Env::NotifyWindowInitialized(Window* window) {
FOR_EACH_OBSERVER(EnvObserver, observers_, OnWindowInitialized(window));
}
void Env::NotifyHostInitialized(WindowTreeHost* host) {
FOR_EACH_OBSERVER(EnvObserver, observers_, OnHostInitialized(host));
}
void Env::NotifyHostActivated(WindowTreeHost* host) {
FOR_EACH_OBSERVER(EnvObserver, observers_, OnHostActivated(host));
}
////////////////////////////////////////////////////////////////////////////////
// Env, ui::EventTarget implementation:
bool Env::CanAcceptEvent(const ui::Event& event) {
return true;
}
ui::EventTarget* Env::GetParentTarget() {
return NULL;
}
scoped_ptr<ui::EventTargetIterator> Env::GetChildIterator() const {
return scoped_ptr<ui::EventTargetIterator>();
}
ui::EventTargeter* Env::GetEventTargeter() {
NOTREACHED();
return NULL;
}
} // namespace aura
|
