listview.slint - Codebrowser

1	// Copyright © SixtyFPS GmbH <info@slint.dev>
2	// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-2.0 OR LicenseRef-Slint-Software-3.0
3
4	import { StandardListView } from "std-widgets.slint";
5
6	export component TestCase inherits Window {
7	callback set-current-item(int);
8
9	out property <int> count: list.model.length;
10	in-out property <int> callback-current-item: -`1`;
11
12	in-out property<[StandardListViewItem]> model: [
13	{ text: "Item 1" },
14	{ text: "Item 2" },
15	{ text: "Item 3" },
16	];
17	in-out property <int> current-item <=> list.current-item;
18	out property has-focus <=> list.has-focus;
19
20	list := StandardListView {
21	model: root.model;
22
23	current-item-changed(index) => {
24	root.callback-current-item = index;
25	}
26	}
27
28
29	set-current-item(index) => {
30	list.set-current-item(index);
31	}
32	}
33
34	/*
35
36	```rust
37	use slint::platform::Key;
38	use slint::SharedString;
39
40	let instance = TestCase::new().unwrap();
41	assert_eq!(instance.get_count(), 3);
42	assert_eq!(instance.get_current_item(), -1);
43
44	assert_eq!(instance.get_callback_current_item(), -1);
45	instance.invoke_set_current_item(1);
46	assert_eq!(instance.get_callback_current_item(), 1);
47	assert_eq!(instance.get_current_item(), 1);
48
49	instance.set_callback_current_item(-1);
50	instance.invoke_set_current_item(1);
51	assert_eq!(instance.get_callback_current_item(), -1);
52	assert_eq!(instance.get_current_item(), 1);
53
54	instance.invoke_set_current_item(0);
55	assert_eq!(instance.get_has_focus(), false);
56
57	// Focus the listview
58	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::Tab));
59	assert_eq!(instance.get_has_focus(), true);
60	assert_eq!(instance.get_current_item(), 0);
61
62	// Up and Down arrow keys move the selection
63	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::UpArrow));
64	assert_eq!(instance.get_current_item(), 0);
65	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::DownArrow));
66	assert_eq!(instance.get_current_item(), 1);
67	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::DownArrow));
68	assert_eq!(instance.get_current_item(), 2);
69	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::DownArrow));
70	assert_eq!(instance.get_current_item(), 2);
71	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::UpArrow));
72	assert_eq!(instance.get_current_item(), 1);
73
74	// Pressing the Home key selects the first item
75	instance.invoke_set_current_item(2);
76	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::Home));
77	assert_eq!(instance.get_current_item(), 0);
78
79	// Pressing the End key selects the last item
80	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::End));
81	assert_eq!(instance.get_current_item(), 2);
82
83	// Pressing the space bar on the selected item does not deselect it
84	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::Space));
85	assert_eq!(instance.get_current_item(), 2);
86
87	// Control+Space deselects the currently focused item
88	slint_testing::send_keyboard_char(&instance, Key::Control.into(), true);
89	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::Space));
90	assert_eq!(instance.get_current_item(), -1);
91
92	// Control+Space selects the currently focused item
93	slint_testing::send_keyboard_char(&instance, Key::Control.into(), true);
94	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::Space));
95	assert_eq!(instance.get_current_item(), 2);
96
97	// Control+UpArrow moves the focus up one item but not the selection
98	slint_testing::send_keyboard_char(&instance, Key::Control.into(), true);
99	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::UpArrow));
100	assert_eq!(instance.get_current_item(), 2);
101
102	// Pressing the space bar selects the currently focused item if it is not
103	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::Space));
104	assert_eq!(instance.get_current_item(), 1);
105
106	// Control+DownArrow moves the focus down one item but not the selection
107	slint_testing::send_keyboard_char(&instance, Key::Control.into(), true);
108	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::DownArrow));
109	assert_eq!(instance.get_current_item(), 1);
110	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::Space));
111	assert_eq!(instance.get_current_item(), 2);
112
113	// Control+Home moves the focus to the first item but not the selection
114	slint_testing::send_keyboard_char(&instance, Key::Control.into(), true);
115	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::Home));
116	assert_eq!(instance.get_current_item(), 2);
117	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::Space));
118	assert_eq!(instance.get_current_item(), 0);
119
120	// Control+End moves the focus to the last item but not the selection
121	slint_testing::send_keyboard_char(&instance, Key::Control.into(), true);
122	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::End));
123	assert_eq!(instance.get_current_item(), 0);
124	slint_testing::send_keyboard_string_sequence(&instance, &SharedString::from(Key::Space));
125	assert_eq!(instance.get_current_item(), 2);
126
127	// Invoking the accessible default action of an item selects it
128	let mut item2_search = slint_testing::ElementHandle::find_by_accessible_label(&instance, "Item 2");
129	let item2 = item2_search.next().unwrap();
130	item2.invoke_accessible_default_action();
131	assert_eq!(instance.get_current_item(), 1);
132	```
133
134	*/
135