web 0.2.12

A library for interacting with the web browser
Documentation 
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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142

use crate::EventHandlerFuture;
use core::future::Future;
use js::*;

pub fn random() -> f64 {
    let random = js!(r#"
        function(){
            return Math.random();
        }"#);
    random.invoke(&[])
}

pub fn random_i64() -> i64 {
    let r = random();
    let i64 = std::i64::MAX;
    (r * i64 as f64) as i64
}

pub fn get_property_i64(element: &ExternRef, property: &str) -> i64 {
    let get_property = js!(r#"
        function(element, property){
            return element[property];
        }"#);
    get_property.invoke_and_return_bigint(&[element.into(), property.into()])
}

pub fn set_property_i64(element: &ExternRef, property: &str, value: i64) {
    let set_property = js!(r#"
        function(element, property, value){
            element[property] = value;
        }"#);
    set_property.invoke(&[element.into(), property.into(), value.into()]);
}

pub fn get_property_f64(element: &ExternRef, property: &str) -> f64 {
    let get_property = js!(r#"
        function(element, property){
            return element[property];
        }"#);
    get_property.invoke(&[element.into(), property.into()])
}

pub fn set_property_f64(element: &ExternRef, property: &str, value: f64) {
    let set_property = js!(r#"
        function(element, property, value){
            element[property] = value;
        }"#);
    set_property.invoke(&[element.into(), property.into(), value.into()]);
}

pub fn get_property_bool(element: &ExternRef, property: &str) -> bool {
    let get_property = js!(r#"
        function(element, property){
            return element[property]?1:0;
        }"#);
    let v = get_property.invoke(&[element.into(), property.into()]);
    v == 1.0
}

pub fn set_property_bool(element: &ExternRef, property: &str, value: bool) {
    let set_property = js!(r#"
        function(element, property, value){
            element[property] = value !==0;
        }"#);
    set_property.invoke(&[element.into(), property.into(), value.into()]);
}

pub fn get_property_string(element: &ExternRef, property: &str) -> String {
    let get_property = js!(r#"
        function(element, property){
            const text = element[property];
            const allocationId = this.writeUtf8ToMemory(text);
            return allocationId;
        }"#);
    let text_allocation_id = get_property.invoke(&[element.into(), property.into()]);
    let text = extract_string_from_memory(text_allocation_id as usize);
    text
}

pub fn set_property_string(element: &ExternRef, property: &str, value: &str) {
    let set_property = js!(r#"
        function(element, property, value){
            element[property] = value;
        }"#);
    set_property.invoke(&[element.into(), property.into(), value.into()]);
}

#[no_mangle]
pub extern "C" fn web_handle_empty_callback(id: i64) {
    EventHandlerFuture::<()>::wake_future_with_state_id(id, ());
}

pub fn sleep(ms: impl Into<f64>) -> impl Future<Output = ()> {
    let sleep = js!(r#"
        function(ms, state_id){
            window.setTimeout(()=>{
                this.module.instance.exports.web_handle_empty_callback(state_id);
            }, ms);
        }"#);
    let ms = ms.into();
    let (future, state_id) = EventHandlerFuture::<()>::create_future_with_state_id();
    sleep.invoke(&[ms.into(), state_id.into()]);
    future
}

pub fn wait_til_animation_frame() -> impl Future<Output = ()> {
    let wait_til_animation_frame = js!(r#"
        function(state_id){
            window.requestAnimationFrame(()=>{
                this.module.instance.exports.web_handle_empty_callback(state_id);
            });
        }"#);
    let (future, state_id) = EventHandlerFuture::<()>::create_future_with_state_id();
    wait_til_animation_frame.invoke(&[state_id.into()]);
    future
}

pub fn create_object() -> ExternRef {
    let config_ref = js!(r#"
        function(){
            return {};
        }"#)
    .invoke_and_return_object(&[]);
    config_ref
}

pub fn create_array() -> ExternRef {
    let config_ref = js!(r#"
        function(){
            return [];
        }"#)
    .invoke_and_return_object(&[]);
    config_ref
}

pub fn add_to_array(array: &ExternRef, value: &ExternRef) {
    let add_to_array = js!(r#"
        function(array, value){
            array.push(value);
        }"#);
    add_to_array.invoke(&[(array).into(), (value).into()]);
}