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/** |
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* Internal dependencies |
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*/ |
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import { exposeComponent } from "./utils"; |
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|
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/** |
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* Data API |
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* Adapted from Bootstrap |
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*/ |
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|
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/** |
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* Constants |
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*/ |
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|
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const elementMap = new Map(); |
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|
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const Data = { |
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set(element, key, instance) { |
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if (!elementMap.has(element)) { |
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elementMap.set(element, new Map()); |
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} |
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|
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const instanceMap = elementMap.get(element); |
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|
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// make it clear we only want one instance per element |
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// can be removed later when multiple key/instances are fine to be used |
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if (!instanceMap.has(key) && instanceMap.size !== 0) { |
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// eslint-disable-next-line no-console |
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console.error( |
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`Doesn't allow more than one instance per element. Bound instance: ${ |
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Array.from(instanceMap.keys())[0] |
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}.` |
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); |
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return; |
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} |
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|
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instanceMap.set(key, instance); |
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}, |
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|
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get(element, key) { |
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if (elementMap.has(element)) { |
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return elementMap.get(element).get(key) || null; |
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} |
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|
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return null; |
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}, |
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|
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remove(element, key) { |
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if (!elementMap.has(element)) { |
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return; |
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} |
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|
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const instanceMap = elementMap.get(element); |
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|
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instanceMap.delete(key); |
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|
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// free up element references if there are no instances left for an element |
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if (instanceMap.size === 0) { |
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elementMap.delete(element); |
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} |
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}, |
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}; |
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|
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exposeComponent("Data", Data); |
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|
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export { Data }; |
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|
