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| 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | 4x 4x 18x 18x 18x 18x 12x 12x 12x 3x 9x 9x 9x 9x 9x 6x 8x 8x 6x 6x 9x 5x 1x 4x 2x 2x 2x 2x 2x 1x 1x 2x 18x 4x 4x 4x 2x 2x 2x 4x | import {
XEmitter,
XArgsSpec,
XArgs,
XInit,
XEvent,
XArgSpec,
XType,
XTypeEnumValues,
XDescrArgs,
XUnsubsribe,
XArgEnumSpec,
} from '../typing';
import { defineStaticProperies } from '../utils';
export function createXEmitter<
D extends string,
A extends XArgsSpec,
I extends XInit,
>(
descr: D | ((args: XDescrArgs<A>) => D),
args: A,
init?: I,
): XEmitter<D, A, I> {
const listeners = [] as ((xevt: XEvent<D, A, I>) => void)[];
const path = init ? init.group.$path().concat(init.name) : [] as string[];
const argKeys = Object.keys(args);
let locked = false;
function emit(data: XArgs<A>) {
Iif (locked) {
return;
}
let idx = listeners.length;
if (idx === 0 || init && !init.group.$observed()) {
return;
}
let xevt = {
ts: Date.now(),
target: emit as XEmitter<D, A, I>,
data,
};
locked = true;
while (idx--) {
listeners[idx](xevt);
}
locked = false;
}
function $args() {
return args;
}
function $path() {
return path;
}
function $name() {
return init?.name;
}
function $group() {
return init?.group;
}
function $on(listener: (xevt: XEvent<D, A, I>) => void): XUnsubsribe {
listeners.push(listener);
return () => {
const idx = listeners.indexOf(listener);
(idx !== -1) && listeners.splice(idx, 1);
};
}
function $clone<NI extends XInit = I>(ninit?: NI) {
return createXEmitter(descr, args, (ninit || init) as NI);
}
function $descr(data?: XArgs<A>): D {
if (typeof descr === 'string') {
return descr;
}
if (data == null) {
return descr(newProxyArgs(args));
}
return descr(argKeys.reduce((map, key) => {
const arg = args[key];
map[key] = {
name: ('values' in arg) ? arg.values[data[key]] : arg.name,
value: data[key],
};
return map;
}, {}) as XDescrArgs<A>);
}
function $filter(condition: (args: XArgs<A>) => boolean) {
return {
$on: (listener: (xevt: XEvent<D, A, I>) => void) => {
return $on((xevt) => {
condition(xevt.data) && listener(xevt);
});
},
};
}
return defineStaticProperies(emit, {
$args,
$clone,
$path,
$on,
$descr,
$filter,
$name,
$group,
});
}
export function createXType<
N extends string,
T extends XType,
>(name: N, type: T): XArgSpec<N, T> {
return <const>{ name, type };
}
export function createXEnum<
N extends string,
E extends XTypeEnumValues,
>(name: N, values: E): XArgEnumSpec<N, E> {
return <const>{ name, values };
}
function newProxyArgs<A extends XArgsSpec>(args: A) {
return new Proxy({}, {
get(_, prop) {
return {
name: `\${${prop as string}.name}`,
value: `\${${prop as string}.value}`,
};
},
}) as XDescrArgs<A>;
}
export function isXEmitter(val: object): val is XEmitter<string, any, XInit> {
return val && typeof val['$args'] === 'function';
}
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