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
|
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_SHELF_HOME_BUTTON_CONTROLLER_H_
#define ASH_SHELF_HOME_BUTTON_CONTROLLER_H_
#include <memory>
#include "ash/assistant/model/assistant_ui_model_observer.h"
#include "ash/public/cpp/app_list/app_list_controller_observer.h"
#include "ash/public/cpp/assistant/assistant_state.h"
#include "ash/public/cpp/tablet_mode_observer.h"
#include "base/memory/raw_ptr.h"
namespace ui {
class GestureEvent;
} // namespace ui
namespace ash {
class AssistantOverlay;
class HomeButton;
// Controls behavior of the HomeButton, including a possible long-press
// action (for Assistant).
// Behavior is tested indirectly in HomeButtonTest and ShelfViewInkDropTest.
class HomeButtonController : public AppListControllerObserver,
public TabletModeObserver,
public AssistantStateObserver,
public AssistantUiModelObserver {
public:
explicit HomeButtonController(HomeButton* button);
HomeButtonController(const HomeButtonController&) = delete;
HomeButtonController& operator=(const HomeButtonController&) = delete;
~HomeButtonController() override;
// Maybe handles a gesture event based on the event and whether the Assistant
// is available. Returns true if the event is consumed; otherwise, HomeButton
// should pass the event along to Button to consume.
bool MaybeHandleGestureEvent(ui::GestureEvent* event);
// Whether the Assistant is available via long-press.
bool IsAssistantAvailable();
// Whether the Assistant UI currently showing.
bool IsAssistantVisible();
private:
// AppListControllerObserver:
void OnAppListVisibilityWillChange(bool shown, int64_t display_id) override;
// TabletModeObserver:
void OnTabletModeStarted() override;
// AssistantStateObserver:
void OnAssistantFeatureAllowedChanged(
assistant::AssistantAllowedState) override;
void OnAssistantSettingsEnabled(bool enabled) override;
// AssistantUiModelObserver:
void OnUiVisibilityChanged(
AssistantVisibility new_visibility,
AssistantVisibility old_visibility,
absl::optional<AssistantEntryPoint> entry_point,
absl::optional<AssistantExitPoint> exit_point) override;
void OnAppListShown();
void OnAppListDismissed();
void StartAssistantAnimation();
// Initialize the Assistant overlay.
void InitializeAssistantOverlay();
// The button that owns this controller.
const raw_ptr<HomeButton, ExperimentalAsh> button_;
// Owned by the button's view hierarchy.
raw_ptr<AssistantOverlay, ExperimentalAsh> assistant_overlay_ = nullptr;
std::unique_ptr<base::OneShotTimer> assistant_animation_delay_timer_;
};
} // namespace ash
#endif // ASH_SHELF_HOME_BUTTON_CONTROLLER_H_
|
