two_way_binding.slint

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	OtherComp := Rectangle {
5	property <string> t <=> text.text;
6	property <string> get_text <=> text.text;
7	text := Text {
8	text: "to be overridden";
9	}
10	property <int> some_value: `42`;
11	property <int> some_value_alias <=> some_value;
12	}
13
14	TestCase := Rectangle {
15
16	property <string> text1: "Hello";
17	property <string> text2: "Blah";
18	property <string> ti1_text: ti1.text;
19	property <string> ti2_text: ti2.text;
20	property <string> text_item_text: text_item.text;
21	property <string> othercomp_t: "real value";
22	property <string> othercomp_get_text: other_comp.get_text;
23	property <int> othercomp_some_value;
24	property <int> othercomp_some_value_alias <=> other_comp.some_value_alias;
25	property <int> othercomp_some_value_alias2;
26
27	ti1 := TextInput {
28	text <=> text1;
29	}
30
31	ti2 := TextInput {
32	text <=> text_item.text;
33	}
34
35	text_item := Text {
36	text: text2;
37	}
38
39	Text {
40	text <=> text1;
41	}
42
43	other_comp := OtherComp {
44	t <=> root.othercomp_t;
45	some_value <=> othercomp_some_value;
46	some_value_alias <=> othercomp_some_value_alias2;
47	}
48
49	callback set_ti1(string);
50	set_ti1(a) => { ti1.text = a; }
51	callback set_ti2(string);
52	set_ti2(a) => { ti2.text = a; }
53	}
54
55
56	/*
57
58	```rust
59	let instance = TestCase::new().unwrap();
60	assert_eq!(instance.get_text1(), slint::SharedString::from("Hello"));
61	assert_eq!(instance.get_text2(), slint::SharedString::from("Blah"));
62	assert_eq!(instance.get_ti1_text(), slint::SharedString::from("Hello"));
63	assert_eq!(instance.get_ti2_text(), slint::SharedString::from("Blah"));
64	assert_eq!(instance.get_text_item_text(), slint::SharedString::from("Blah"));
65	assert_eq!(instance.get_othercomp_t(), instance.get_othercomp_get_text());
66	assert_eq!(instance.get_othercomp_t(), slint::SharedString::from("real value"));
67	assert_eq!(instance.get_othercomp_get_text(), slint::SharedString::from("real value"));
68
69	instance.set_text1(slint::SharedString::from("Text1New"));
70	instance.set_text2(slint::SharedString::from("Text2New"));
71	assert_eq!(instance.get_text1(), slint::SharedString::from("Text1New"));
72	assert_eq!(instance.get_text2(), slint::SharedString::from("Text2New"));
73	assert_eq!(instance.get_ti1_text(), slint::SharedString::from("Text1New"));
74	assert_eq!(instance.get_ti2_text(), slint::SharedString::from("Text2New"));
75	assert_eq!(instance.get_text_item_text(), slint::SharedString::from("Text2New"));
76
77	instance.invoke_set_ti1(slint::SharedString::from("Hallo"));
78	instance.invoke_set_ti2(slint::SharedString::from("Bonjour"));
79	assert_eq!(instance.get_text1(), slint::SharedString::from("Hallo"));
80	assert_eq!(instance.get_text2(), slint::SharedString::from("Text2New"));
81	assert_eq!(instance.get_ti1_text(), slint::SharedString::from("Hallo"));
82	assert_eq!(instance.get_ti2_text(), slint::SharedString::from("Bonjour"));
83	assert_eq!(instance.get_text_item_text(), slint::SharedString::from("Bonjour"));
84
85	assert_eq!(instance.get_othercomp_some_value(), 0);
86	assert_eq!(instance.get_othercomp_some_value_alias(), 0);
87	assert_eq!(instance.get_othercomp_some_value_alias2(), 0);
88	instance.set_othercomp_some_value(88);
89	assert_eq!(instance.get_othercomp_some_value(), 88);
90	assert_eq!(instance.get_othercomp_some_value_alias(), 88);
91	assert_eq!(instance.get_othercomp_some_value_alias2(), 88);
92	instance.set_othercomp_some_value_alias(81);
93	assert_eq!(instance.get_othercomp_some_value(), 81);
94	assert_eq!(instance.get_othercomp_some_value_alias(), 81);
95	assert_eq!(instance.get_othercomp_some_value_alias2(), 81);
96	instance.set_othercomp_some_value_alias2(1);
97	assert_eq!(instance.get_othercomp_some_value(), 1);
98	assert_eq!(instance.get_othercomp_some_value_alias(), 1);
99	assert_eq!(instance.get_othercomp_some_value_alias2(), 1);
100
101	```
102
103
104
105	```cpp
106	auto handle = TestCase::create();
107	const TestCase &instance = handle;*
108	assert_eq(instance.get_text1(), slint::SharedString("Hello"));
109	assert_eq(instance.get_text2(), slint::SharedString("Blah"));
110	assert_eq(instance.get_ti1_text(), slint::SharedString("Hello"));
111	assert_eq(instance.get_ti2_text(), slint::SharedString("Blah"));
112	assert_eq(instance.get_text_item_text(), slint::SharedString("Blah"));
113	assert_eq(instance.get_othercomp_t(), instance.get_othercomp_get_text());
114	assert_eq(instance.get_othercomp_t(), slint::SharedString("real value"));
115	assert_eq(instance.get_othercomp_get_text(), slint::SharedString("real value"));
116
117
118	instance.set_text1(slint::SharedString("Text1New"));
119	instance.set_text2(slint::SharedString("Text2New"));
120	assert_eq(instance.get_text1(), slint::SharedString("Text1New"));
121	assert_eq(instance.get_text2(), slint::SharedString("Text2New"));
122	assert_eq(instance.get_ti1_text(), slint::SharedString("Text1New"));
123	assert_eq(instance.get_ti2_text(), slint::SharedString("Text2New"));
124	assert_eq(instance.get_text_item_text(), slint::SharedString("Text2New"));
125
126	instance.invoke_set_ti1(slint::SharedString("Hallo"));
127	instance.invoke_set_ti2(slint::SharedString("Bonjour"));
128	assert_eq(instance.get_text1(), slint::SharedString("Hallo"));
129	assert_eq(instance.get_text2(), slint::SharedString("Text2New"));
130	assert_eq(instance.get_ti1_text(), slint::SharedString("Hallo"));
131	assert_eq(instance.get_ti2_text(), slint::SharedString("Bonjour"));
132	assert_eq(instance.get_text_item_text(), slint::SharedString("Bonjour"));
133
134	assert_eq(instance.get_othercomp_some_value(), 0);
135	assert_eq(instance.get_othercomp_some_value_alias(), 0);
136	assert_eq(instance.get_othercomp_some_value_alias2(), 0);
137	instance.set_othercomp_some_value(88);
138	assert_eq(instance.get_othercomp_some_value(), 88);
139	assert_eq(instance.get_othercomp_some_value_alias(), 88);
140	assert_eq(instance.get_othercomp_some_value_alias2(), 88);
141	instance.set_othercomp_some_value_alias(81);
142	assert_eq(instance.get_othercomp_some_value(), 81);
143	assert_eq(instance.get_othercomp_some_value_alias(), 81);
144	assert_eq(instance.get_othercomp_some_value_alias2(), 81);
145	instance.set_othercomp_some_value_alias2(1);
146	assert_eq(instance.get_othercomp_some_value(), 1);
147	assert_eq(instance.get_othercomp_some_value_alias(), 1);
148	assert_eq(instance.get_othercomp_some_value_alias2(), 1);
149	```
150
151
152	```js
153	let instance = new slint.TestCase({});
154	assert.equal(instance.text1, "Hello");
155	assert.equal(instance.text2, "Blah");
156	assert.equal(instance.ti1_text, "Hello");
157	assert.equal(instance.ti2_text, "Blah");
158	assert.equal(instance.text_item_text, "Blah");
159	assert.equal(instance.othercomp_t, instance.othercomp_get_text);
160	assert.equal(instance.othercomp_t, "real value");
161	assert.equal(instance.othercomp_get_text, "real value");
162
163	instance.text1 = "Text1New";
164	instance.text2 = "Text2New";
165	assert.equal(instance.text1, "Text1New");
166	assert.equal(instance.text2, "Text2New");
167	assert.equal(instance.ti1_text, "Text1New");
168	assert.equal(instance.ti2_text, "Text2New");
169	assert.equal(instance.text_item_text, "Text2New");
170
171	instance.set_ti1("Hallo");
172	instance.set_ti2("Bonjour");
173	assert.equal(instance.text1, "Hallo");
174	assert.equal(instance.text2, "Text2New");
175	assert.equal(instance.ti1_text, "Hallo");
176	assert.equal(instance.ti2_text, "Bonjour");
177	assert.equal(instance.text_item_text, "Bonjour");
178
179	assert.equal(instance.othercomp_some_value, 0);
180	assert.equal(instance.othercomp_some_value_alias, 0);
181	assert.equal(instance.othercomp_some_value_alias2, 0);
182	instance.othercomp_some_value = 88;
183	assert.equal(instance.othercomp_some_value, 88);
184	assert.equal(instance.othercomp_some_value_alias, 88);
185	assert.equal(instance.othercomp_some_value_alias2, 88);
186	instance.othercomp_some_value_alias = 81;
187	assert.equal(instance.othercomp_some_value, 81);
188	assert.equal(instance.othercomp_some_value_alias, 81);
189	assert.equal(instance.othercomp_some_value_alias2, 81);
190	instance.othercomp_some_value_alias2 = 1;
191	assert.equal(instance.othercomp_some_value, 1);
192	assert.equal(instance.othercomp_some_value_alias, 1);
193	assert.equal(instance.othercomp_some_value_alias2, 1);
194	```
195
196	*/
197