53 lines
1.4 KiB
JavaScript
53 lines
1.4 KiB
JavaScript
"use strict";
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const parsers = require("../parsers");
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module.exports.parse = function parse(v) {
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const parts = parsers.splitValue(v);
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if (!parts.length || parts.length > 2) {
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return;
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}
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const validKeywordsX = ["left", "center", "right"];
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const validKeywordsY = ["top", "center", "bottom"];
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if (parts.length === 1) {
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const dim = parsers.parseMeasurement(parts[0]);
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if (dim) {
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return dim;
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}
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const validKeywords = new Set([...validKeywordsX, ...validKeywordsY]);
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return parsers.parseKeyword(v, [...validKeywords]);
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}
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const [partX, partY] = parts;
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const posX = parsers.parseMeasurement(partX) || parsers.parseKeyword(partX, validKeywordsX);
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if (posX) {
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const posY = parsers.parseMeasurement(partY) || parsers.parseKeyword(partY, validKeywordsY);
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if (posY) {
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return `${posX} ${posY}`;
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}
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}
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};
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module.exports.isValid = function isValid(v) {
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if (v === "") {
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return true;
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}
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return typeof module.exports.parse(v) === "string";
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};
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module.exports.definition = {
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set(v) {
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v = parsers.prepareValue(v, this._global);
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if (parsers.hasVarFunc(v)) {
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this._setProperty("background", "");
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this._setProperty("background-position", v);
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} else {
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this._setProperty("background-position", module.exports.parse(v));
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}
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},
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get() {
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return this.getPropertyValue("background-position");
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},
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enumerable: true,
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configurable: true
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};
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