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
|
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/views/event_monitor_aura.h"
#include <memory>
#include "base/check_op.h"
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "ui/aura/env.h"
#include "ui/aura/window.h"
#include "ui/events/event_observer.h"
#include "ui/events/event_target.h"
namespace views {
namespace {
// An EventMonitorAura that removes its event observer on window destruction.
class WindowMonitorAura : public EventMonitorAura, public aura::WindowObserver {
public:
WindowMonitorAura(ui::EventObserver* event_observer,
aura::Window* target_window,
const std::set<ui::EventType>& types)
: EventMonitorAura(event_observer, target_window, types),
target_window_(target_window) {
window_observation_.Observe(target_window);
}
WindowMonitorAura(const WindowMonitorAura&) = delete;
WindowMonitorAura& operator=(const WindowMonitorAura&) = delete;
~WindowMonitorAura() override = default;
// aura::WindowObserver:
void OnWindowDestroying(aura::Window* window) override {
DCHECK_EQ(window, target_window_);
DCHECK(window_observation_.IsObservingSource(target_window_.get()));
window_observation_.Reset();
target_window_ = nullptr;
TearDown();
}
private:
raw_ptr<aura::Window> target_window_;
base::ScopedObservation<aura::Window, aura::WindowObserver>
window_observation_{this};
};
} // namespace
// static
std::unique_ptr<EventMonitor> EventMonitor::CreateApplicationMonitor(
ui::EventObserver* event_observer,
gfx::NativeWindow context,
const std::set<ui::EventType>& types) {
return std::make_unique<EventMonitorAura>(event_observer,
aura::Env::GetInstance(), types);
}
// static
std::unique_ptr<EventMonitor> EventMonitor::CreateWindowMonitor(
ui::EventObserver* event_observer,
gfx::NativeWindow target_window,
const std::set<ui::EventType>& types) {
return std::make_unique<WindowMonitorAura>(event_observer, target_window,
types);
}
EventMonitorAura::EventMonitorAura(ui::EventObserver* event_observer,
ui::EventTarget* event_target,
const std::set<ui::EventType>& types)
: event_observer_(event_observer) {
DCHECK(event_observer_);
aura::Env::GetInstance()->AddEventObserver(event_observer_, event_target,
types);
}
EventMonitorAura::~EventMonitorAura() {
TearDown();
}
gfx::Point EventMonitorAura::GetLastMouseLocation() {
return aura::Env::GetInstance()->last_mouse_location();
}
void EventMonitorAura::TearDown() {
if (event_observer_) {
aura::Env::GetInstance()->RemoveEventObserver(event_observer_);
}
event_observer_ = nullptr;
}
} // namespace views
|
