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
|
// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_STATUS_ICONS_STATUS_ICON_MENU_MODEL_H_
#define CHROME_BROWSER_STATUS_ICONS_STATUS_ICON_MENU_MODEL_H_
#include <map>
#include "base/memory/raw_ptr.h"
#include "base/observer_list.h"
#include "ui/base/models/image_model.h"
#include "ui/menus/simple_menu_model.h"
namespace gfx {
class Image;
}
// StatusIconMenuModel contains the state of the SimpleMenuModel as well as that
// of its delegate. This is done so that we can easily identify when the menu
// model state has changed and can tell the status icon to update the menu. This
// is necessary some platforms which do not notify us before showing the menu
// (like Ubuntu Unity).
class StatusIconMenuModel : public ui::SimpleMenuModel,
public ui::SimpleMenuModel::Delegate {
public:
class Delegate {
public:
// Performs the action associates with the specified command id.
// The passed |event_flags| are the flags from the event which issued this
// command and they can be examined to find modifier keys.
virtual void ExecuteCommand(int command_id, int event_flags) = 0;
protected:
virtual ~Delegate() = default;
};
class Observer {
public:
// Invoked when the menu model has changed.
virtual void OnMenuStateChanged() {}
protected:
virtual ~Observer() = default;
};
// The Delegate can be NULL.
explicit StatusIconMenuModel(Delegate* delegate);
StatusIconMenuModel(const StatusIconMenuModel&) = delete;
StatusIconMenuModel& operator=(const StatusIconMenuModel&) = delete;
~StatusIconMenuModel() override;
// Methods for seting the state of specific command ids.
void SetCommandIdChecked(int command_id, bool checked);
void SetCommandIdEnabled(int command_id, bool enabled);
void SetCommandIdVisible(int command_id, bool visible);
// Sets the accelerator for the specified command id.
void SetAcceleratorForCommandId(
int command_id, const ui::Accelerator* accelerator);
// Calling any of these "change" methods will mark the menu item as "dynamic"
// (see menu_model.h:IsItemDynamicAt) which many platforms take as a cue to
// refresh the label and icon of the menu item each time the menu is
// shown.
void ChangeLabelForCommandId(int command_id, const std::u16string& label);
void ChangeIconForCommandId(int command_id, const gfx::Image& icon);
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
// Overridden from ui::SimpleMenuModel::Delegate:
bool IsCommandIdChecked(int command_id) const override;
bool IsCommandIdEnabled(int command_id) const override;
bool IsCommandIdVisible(int command_id) const override;
bool GetAcceleratorForCommandId(int command_id,
ui::Accelerator* accelerator) const override;
bool IsItemForCommandIdDynamic(int command_id) const override;
std::u16string GetLabelForCommandId(int command_id) const override;
ui::ImageModel GetIconForCommandId(int command_id) const override;
void ExecuteCommand(int command_id, int event_flags) override;
protected:
// Overriden from ui::SimpleMenuModel:
void MenuItemsChanged() override;
void NotifyMenuStateChanged();
void set_delegate(Delegate* delegate) { delegate_ = delegate; }
Delegate* delegate() { return delegate_; }
private:
struct ItemState;
// Map the properties to the command id (used as key).
typedef std::map<int, ItemState> ItemStateMap;
ItemStateMap item_states_;
base::ObserverList<Observer>::Unchecked observer_list_;
raw_ptr<Delegate, DanglingUntriaged> delegate_;
};
#endif // CHROME_BROWSER_STATUS_ICONS_STATUS_ICON_MENU_MODEL_H_
|
