47 lines
1.3 KiB
JavaScript
47 lines
1.3 KiB
JavaScript
function handler() {
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let zIndexes = [];
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const generateZIndex = (key, autoZIndex, baseZIndex = 999) => {
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const lastZIndex = getLastZIndex(key, autoZIndex, baseZIndex);
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const newZIndex = lastZIndex.value + (lastZIndex.key === key ? 0 : baseZIndex) + 1;
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zIndexes.push({ key, value: newZIndex });
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return newZIndex;
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};
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const revertZIndex = (zIndex) => {
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zIndexes = zIndexes.filter((obj) => obj.value !== zIndex);
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};
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const getCurrentZIndex = (key, autoZIndex) => {
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return getLastZIndex(key, autoZIndex).value;
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};
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const getLastZIndex = (key, autoZIndex, baseZIndex = 0) => {
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return [...zIndexes].reverse().find((obj) => (autoZIndex ? true : obj.key === key)) || { key, value: baseZIndex };
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};
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const getZIndex = (el) => {
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return el ? parseInt(el.style.zIndex, 10) || 0 : 0;
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};
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return {
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get: getZIndex,
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set: (key, el, baseZIndex) => {
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if (el) {
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el.style.zIndex = String(generateZIndex(key, true, baseZIndex));
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}
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},
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clear: (el) => {
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if (el) {
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revertZIndex(getZIndex(el));
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el.style.zIndex = '';
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}
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},
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getCurrent: (key) => getCurrentZIndex(key, true)
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};
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}
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export default handler();
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