react-native-web-internals
Version:
React Native for Web
88 lines (87 loc) • 3.08 kB
JavaScript
const slice = Array.prototype.slice;
function createOrderedCSSStyleSheet(sheet) {
const groups = {},
selectors = {};
if (sheet != null) {
let group;
slice.call(sheet.cssRules).forEach((cssRule, i) => {
const cssText = cssRule.cssText;
if (cssText.indexOf("stylesheet-group") > -1) group = decodeGroupRule(cssRule), groups[group] = {
start: i,
rules: [cssText]
};else {
const selectorText = getSelectorText(cssText);
selectorText != null && (selectors[selectorText] = !0, groups[group].rules.push(cssText));
}
});
}
function sheetInsert(sheet2, group, text) {
const orderedGroups = getOrderedGroups(groups),
nextGroupIndex = orderedGroups.indexOf(group) + 1,
nextGroup = orderedGroups[nextGroupIndex],
position = nextGroup != null && groups[nextGroup].start != null ? groups[nextGroup].start : sheet2.cssRules.length,
isInserted = insertRuleAt(sheet2, text, position);
if (isInserted) {
groups[group].start == null && (groups[group].start = position);
for (let i = nextGroupIndex; i < orderedGroups.length; i += 1) {
const groupNumber = orderedGroups[i],
previousStart = groups[groupNumber].start || 0;
groups[groupNumber].start = previousStart + 1;
}
}
return isInserted;
}
return {
/**
* The textContent of the style sheet.
*/
getTextContent() {
return getOrderedGroups(groups).map(group => {
const rules = groups[group].rules,
marker = rules.shift();
return rules.sort(), rules.unshift(marker), rules.join(`
`);
}).join(`
`);
},
/**
* Insert a rule into the style sheet
*/
insert(cssText, groupValue) {
const group = Number(groupValue);
if (groups[group] == null) {
const markerRule = encodeGroupRule(group);
groups[group] = {
start: null,
rules: [markerRule]
}, sheet != null && sheetInsert(sheet, group, markerRule);
}
const selectorText = getSelectorText(cssText);
selectorText != null && selectors[selectorText] == null && (selectors[selectorText] = !0, groups[group].rules.push(cssText), sheet != null && (sheetInsert(sheet, group, cssText) || groups[group].rules.pop()));
}
};
}
function encodeGroupRule(group) {
return `[stylesheet-group="${group}"]{}`;
}
const groupPattern = /["']/g;
function decodeGroupRule(cssRule) {
return Number(cssRule.selectorText.split(groupPattern)[1]);
}
function getOrderedGroups(obj) {
return Object.keys(obj).map(Number).sort((a, b) => a > b ? 1 : -1);
}
const selectorPattern = /\s*([,])\s*/g;
function getSelectorText(cssText) {
const selector = cssText.split("{")[0].trim();
return selector !== "" ? selector.replace(selectorPattern, "$1") : null;
}
function insertRuleAt(root, cssText, position) {
try {
return root.insertRule(cssText, position), !0;
} catch {
return !1;
}
}
export { createOrderedCSSStyleSheet as default };
//# sourceMappingURL=createOrderedCSSStyleSheet.mjs.map