36 lines
1.1 KiB
JavaScript
36 lines
1.1 KiB
JavaScript
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import AnimatedValue from '../core/InternalAnimatedValue';
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import { createAnimatedSet as set } from '../core/AnimatedSet';
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import { createAnimatedCall as call } from '../core/AnimatedCall';
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import { createAnimatedAlways as always } from '../core/AnimatedAlways';
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import { createAnimatedCond as cond } from '../core/AnimatedCond';
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/**
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* evaluate given node and notify children
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* @param node - node to be evaluated
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* @param input - nodes (or one node) representing values which states input for node.
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* @param callback - after callback
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*/
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export function evaluateOnce(node, input = [], callback) {
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if (!Array.isArray(input)) {
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input = [input];
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}
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const done = new AnimatedValue(0);
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const evalNode = cond(done, 0, call([node, set(done, 1)], () => {
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callback && callback();
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for (let i = 0; i < input.length; i++) {
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input[i].__removeChild(alwaysNode);
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alwaysNode.__detach();
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}
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}));
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const alwaysNode = always(evalNode);
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for (let i = 0; i < input.length; i++) {
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input[i].__addChild(alwaysNode);
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alwaysNode.__attach();
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}
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}
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//# sourceMappingURL=evaluateOnce.js.map
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