1114 lines
28 KiB
JavaScript
1114 lines
28 KiB
JavaScript
let parser = require('postcss-value-parser')
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let list = require('postcss').list
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let uniq = require('../utils').uniq
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let escapeRegexp = require('../utils').escapeRegexp
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let splitSelector = require('../utils').splitSelector
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function convert(value) {
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if (
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value &&
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value.length === 2 &&
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value[0] === 'span' &&
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parseInt(value[1], 10) > 0
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) {
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return [false, parseInt(value[1], 10)]
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}
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if (value && value.length === 1 && parseInt(value[0], 10) > 0) {
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return [parseInt(value[0], 10), false]
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}
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return [false, false]
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}
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exports.translate = translate
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function translate(values, startIndex, endIndex) {
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let startValue = values[startIndex]
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let endValue = values[endIndex]
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if (!startValue) {
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return [false, false]
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}
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let [start, spanStart] = convert(startValue)
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let [end, spanEnd] = convert(endValue)
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if (start && !endValue) {
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return [start, false]
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}
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if (spanStart && end) {
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return [end - spanStart, spanStart]
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}
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if (start && spanEnd) {
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return [start, spanEnd]
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}
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if (start && end) {
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return [start, end - start]
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}
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return [false, false]
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}
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exports.parse = parse
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function parse(decl) {
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let node = parser(decl.value)
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let values = []
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let current = 0
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values[current] = []
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for (let i of node.nodes) {
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if (i.type === 'div') {
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current += 1
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values[current] = []
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} else if (i.type === 'word') {
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values[current].push(i.value)
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}
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}
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return values
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}
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exports.insertDecl = insertDecl
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function insertDecl(decl, prop, value) {
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if (value && !decl.parent.some(i => i.prop === `-ms-${prop}`)) {
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decl.cloneBefore({
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prop: `-ms-${prop}`,
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value: value.toString()
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})
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}
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}
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// Track transforms
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exports.prefixTrackProp = prefixTrackProp
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function prefixTrackProp({ prefix, prop }) {
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return prefix + prop.replace('template-', '')
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}
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function transformRepeat({ nodes }, { gap }) {
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let { count, size } = nodes.reduce(
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(result, node) => {
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if (node.type === 'div' && node.value === ',') {
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result.key = 'size'
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} else {
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result[result.key].push(parser.stringify(node))
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}
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return result
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},
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{
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count: [],
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key: 'count',
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size: []
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}
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)
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// insert gap values
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if (gap) {
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size = size.filter(i => i.trim())
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let val = []
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for (let i = 1; i <= count; i++) {
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size.forEach((item, index) => {
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if (index > 0 || i > 1) {
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val.push(gap)
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}
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val.push(item)
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})
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}
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return val.join(' ')
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}
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return `(${size.join('')})[${count.join('')}]`
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}
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exports.prefixTrackValue = prefixTrackValue
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function prefixTrackValue({ gap, value }) {
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let result = parser(value).nodes.reduce((nodes, node) => {
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if (node.type === 'function' && node.value === 'repeat') {
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return nodes.concat({
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type: 'word',
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value: transformRepeat(node, { gap })
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})
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}
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if (gap && node.type === 'space') {
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return nodes.concat(
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{
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type: 'space',
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value: ' '
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},
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{
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type: 'word',
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value: gap
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},
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node
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)
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}
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return nodes.concat(node)
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}, [])
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return parser.stringify(result)
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}
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// Parse grid-template-areas
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let DOTS = /^\.+$/
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function track(start, end) {
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return { end, span: end - start, start }
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}
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function getColumns(line) {
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return line.trim().split(/\s+/g)
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}
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exports.parseGridAreas = parseGridAreas
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function parseGridAreas({ gap, rows }) {
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return rows.reduce((areas, line, rowIndex) => {
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if (gap.row) rowIndex *= 2
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if (line.trim() === '') return areas
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getColumns(line).forEach((area, columnIndex) => {
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if (DOTS.test(area)) return
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if (gap.column) columnIndex *= 2
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if (typeof areas[area] === 'undefined') {
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areas[area] = {
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column: track(columnIndex + 1, columnIndex + 2),
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row: track(rowIndex + 1, rowIndex + 2)
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}
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} else {
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let { column, row } = areas[area]
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column.start = Math.min(column.start, columnIndex + 1)
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column.end = Math.max(column.end, columnIndex + 2)
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column.span = column.end - column.start
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row.start = Math.min(row.start, rowIndex + 1)
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row.end = Math.max(row.end, rowIndex + 2)
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row.span = row.end - row.start
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}
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})
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return areas
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}, {})
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}
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// Parse grid-template
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function testTrack(node) {
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return node.type === 'word' && /^\[.+]$/.test(node.value)
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}
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function verifyRowSize(result) {
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if (result.areas.length > result.rows.length) {
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result.rows.push('auto')
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}
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return result
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}
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exports.parseTemplate = parseTemplate
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function parseTemplate({ decl, gap }) {
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let gridTemplate = parser(decl.value).nodes.reduce(
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(result, node) => {
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let { type, value } = node
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if (testTrack(node) || type === 'space') return result
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// area
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if (type === 'string') {
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result = verifyRowSize(result)
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result.areas.push(value)
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}
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// values and function
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if (type === 'word' || type === 'function') {
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result[result.key].push(parser.stringify(node))
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}
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// divider(/)
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if (type === 'div' && value === '/') {
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result.key = 'columns'
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result = verifyRowSize(result)
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}
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return result
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},
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{
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areas: [],
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columns: [],
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key: 'rows',
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rows: []
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}
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)
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return {
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areas: parseGridAreas({
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gap,
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rows: gridTemplate.areas
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}),
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columns: prefixTrackValue({
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gap: gap.column,
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value: gridTemplate.columns.join(' ')
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}),
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rows: prefixTrackValue({
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gap: gap.row,
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value: gridTemplate.rows.join(' ')
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})
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}
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}
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// Insert parsed grid areas
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/**
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* Get an array of -ms- prefixed props and values
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* @param {Object} [area] area object with column and row data
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* @param {Boolean} [addRowSpan] should we add grid-column-row value?
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* @param {Boolean} [addColumnSpan] should we add grid-column-span value?
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* @return {Array<Object>}
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*/
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function getMSDecls(area, addRowSpan = false, addColumnSpan = false) {
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let result = [
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{
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prop: '-ms-grid-row',
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value: String(area.row.start)
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}
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]
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if (area.row.span > 1 || addRowSpan) {
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result.push({
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prop: '-ms-grid-row-span',
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value: String(area.row.span)
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})
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}
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result.push({
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prop: '-ms-grid-column',
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value: String(area.column.start)
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})
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if (area.column.span > 1 || addColumnSpan) {
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result.push({
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prop: '-ms-grid-column-span',
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value: String(area.column.span)
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})
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}
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return result
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}
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function getParentMedia(parent) {
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if (parent.type === 'atrule' && parent.name === 'media') {
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return parent
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}
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if (!parent.parent) {
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return false
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}
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return getParentMedia(parent.parent)
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}
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/**
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* change selectors for rules with duplicate grid-areas.
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* @param {Array<Rule>} rules
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* @param {Array<String>} templateSelectors
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* @return {Array<Rule>} rules with changed selectors
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*/
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function changeDuplicateAreaSelectors(ruleSelectors, templateSelectors) {
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ruleSelectors = ruleSelectors.map(selector => {
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let selectorBySpace = list.space(selector)
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let selectorByComma = list.comma(selector)
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if (selectorBySpace.length > selectorByComma.length) {
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selector = selectorBySpace.slice(-1).join('')
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}
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return selector
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})
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return ruleSelectors.map(ruleSelector => {
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let newSelector = templateSelectors.map((tplSelector, index) => {
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let space = index === 0 ? '' : ' '
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return `${space}${tplSelector} > ${ruleSelector}`
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})
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return newSelector
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})
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}
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/**
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* check if selector of rules are equal
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* @param {Rule} ruleA
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* @param {Rule} ruleB
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* @return {Boolean}
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*/
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function selectorsEqual(ruleA, ruleB) {
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return ruleA.selectors.some(sel => {
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return ruleB.selectors.includes(sel)
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})
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}
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/**
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* Parse data from all grid-template(-areas) declarations
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* @param {Root} css css root
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* @return {Object} parsed data
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*/
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function parseGridTemplatesData(css) {
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let parsed = []
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// we walk through every grid-template(-areas) declaration and store
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// data with the same area names inside the item
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css.walkDecls(/grid-template(-areas)?$/, d => {
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let rule = d.parent
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let media = getParentMedia(rule)
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let gap = getGridGap(d)
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let inheritedGap = inheritGridGap(d, gap)
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let { areas } = parseTemplate({ decl: d, gap: inheritedGap || gap })
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let areaNames = Object.keys(areas)
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// skip node if it doesn't have areas
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if (areaNames.length === 0) {
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return true
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}
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// check parsed array for item that include the same area names
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// return index of that item
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let index = parsed.reduce((acc, { allAreas }, idx) => {
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let hasAreas = allAreas && areaNames.some(area => allAreas.includes(area))
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return hasAreas ? idx : acc
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}, null)
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if (index !== null) {
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// index is found, add the grid-template data to that item
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let { allAreas, rules } = parsed[index]
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// check if rule has no duplicate area names
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let hasNoDuplicates = rules.some(r => {
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return r.hasDuplicates === false && selectorsEqual(r, rule)
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})
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let duplicatesFound = false
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// check need to gather all duplicate area names
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let duplicateAreaNames = rules.reduce((acc, r) => {
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if (!r.params && selectorsEqual(r, rule)) {
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duplicatesFound = true
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return r.duplicateAreaNames
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}
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if (!duplicatesFound) {
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areaNames.forEach(name => {
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if (r.areas[name]) {
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acc.push(name)
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}
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})
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}
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return uniq(acc)
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}, [])
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// update grid-row/column-span values for areas with duplicate
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// area names. @see #1084 and #1146
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rules.forEach(r => {
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areaNames.forEach(name => {
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let area = r.areas[name]
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if (area && area.row.span !== areas[name].row.span) {
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areas[name].row.updateSpan = true
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}
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if (area && area.column.span !== areas[name].column.span) {
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areas[name].column.updateSpan = true
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}
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})
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})
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parsed[index].allAreas = uniq([...allAreas, ...areaNames])
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parsed[index].rules.push({
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areas,
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duplicateAreaNames,
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hasDuplicates: !hasNoDuplicates,
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node: rule,
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params: media.params,
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selectors: rule.selectors
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})
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} else {
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// index is NOT found, push the new item to the parsed array
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parsed.push({
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allAreas: areaNames,
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areasCount: 0,
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rules: [
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{
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areas,
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duplicateAreaNames: [],
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duplicateRules: [],
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hasDuplicates: false,
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node: rule,
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params: media.params,
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selectors: rule.selectors
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}
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]
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})
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}
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return undefined
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})
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return parsed
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}
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/**
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* insert prefixed grid-area declarations
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* @param {Root} css css root
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* @param {Function} isDisabled check if the rule is disabled
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* @return {void}
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*/
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exports.insertAreas = insertAreas
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function insertAreas(css, isDisabled) {
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// parse grid-template declarations
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let gridTemplatesData = parseGridTemplatesData(css)
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// return undefined if no declarations found
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if (gridTemplatesData.length === 0) {
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return undefined
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}
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// we need to store the rules that we will insert later
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let rulesToInsert = {}
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css.walkDecls('grid-area', gridArea => {
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let gridAreaRule = gridArea.parent
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let hasPrefixedRow = gridAreaRule.first.prop === '-ms-grid-row'
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let gridAreaMedia = getParentMedia(gridAreaRule)
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if (isDisabled(gridArea)) {
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return undefined
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}
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let gridAreaRuleIndex = css.index(gridAreaMedia || gridAreaRule)
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let value = gridArea.value
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// found the data that matches grid-area identifier
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let data = gridTemplatesData.filter(d => d.allAreas.includes(value))[0]
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if (!data) {
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return true
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}
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let lastArea = data.allAreas[data.allAreas.length - 1]
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let selectorBySpace = list.space(gridAreaRule.selector)
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let selectorByComma = list.comma(gridAreaRule.selector)
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let selectorIsComplex =
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selectorBySpace.length > 1 &&
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selectorBySpace.length > selectorByComma.length
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// prevent doubling of prefixes
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if (hasPrefixedRow) {
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return false
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}
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// create the empty object with the key as the last area name
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// e.g if we have templates with "a b c" values, "c" will be the last area
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if (!rulesToInsert[lastArea]) {
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rulesToInsert[lastArea] = {}
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}
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let lastRuleIsSet = false
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// walk through every grid-template rule data
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for (let rule of data.rules) {
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let area = rule.areas[value]
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let hasDuplicateName = rule.duplicateAreaNames.includes(value)
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// if we can't find the area name, update lastRule and continue
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if (!area) {
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let lastRule = rulesToInsert[lastArea].lastRule
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let lastRuleIndex
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if (lastRule) {
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lastRuleIndex = css.index(lastRule)
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} else {
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/* c8 ignore next 2 */
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lastRuleIndex = -1
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}
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if (gridAreaRuleIndex > lastRuleIndex) {
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rulesToInsert[lastArea].lastRule = gridAreaMedia || gridAreaRule
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}
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continue
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}
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|
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// for grid-templates inside media rule we need to create empty
|
|
// array to push prefixed grid-area rules later
|
|
if (rule.params && !rulesToInsert[lastArea][rule.params]) {
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rulesToInsert[lastArea][rule.params] = []
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}
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if ((!rule.hasDuplicates || !hasDuplicateName) && !rule.params) {
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// grid-template has no duplicates and not inside media rule
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|
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getMSDecls(area, false, false)
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.reverse()
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.forEach(i =>
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gridAreaRule.prepend(
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Object.assign(i, {
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raws: {
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between: gridArea.raws.between
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}
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})
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)
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)
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rulesToInsert[lastArea].lastRule = gridAreaRule
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lastRuleIsSet = true
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} else if (rule.hasDuplicates && !rule.params && !selectorIsComplex) {
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// grid-template has duplicates and not inside media rule
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|
let cloned = gridAreaRule.clone()
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cloned.removeAll()
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getMSDecls(area, area.row.updateSpan, area.column.updateSpan)
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.reverse()
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.forEach(i =>
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cloned.prepend(
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Object.assign(i, {
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raws: {
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between: gridArea.raws.between
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}
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})
|
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)
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)
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|
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cloned.selectors = changeDuplicateAreaSelectors(
|
|
cloned.selectors,
|
|
rule.selectors
|
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)
|
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|
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if (rulesToInsert[lastArea].lastRule) {
|
|
rulesToInsert[lastArea].lastRule.after(cloned)
|
|
}
|
|
rulesToInsert[lastArea].lastRule = cloned
|
|
lastRuleIsSet = true
|
|
} else if (
|
|
rule.hasDuplicates &&
|
|
!rule.params &&
|
|
selectorIsComplex &&
|
|
gridAreaRule.selector.includes(rule.selectors[0])
|
|
) {
|
|
// grid-template has duplicates and not inside media rule
|
|
// and the selector is complex
|
|
gridAreaRule.walkDecls(/-ms-grid-(row|column)/, d => d.remove())
|
|
getMSDecls(area, area.row.updateSpan, area.column.updateSpan)
|
|
.reverse()
|
|
.forEach(i =>
|
|
gridAreaRule.prepend(
|
|
Object.assign(i, {
|
|
raws: {
|
|
between: gridArea.raws.between
|
|
}
|
|
})
|
|
)
|
|
)
|
|
} else if (rule.params) {
|
|
// grid-template is inside media rule
|
|
// if we're inside media rule, we need to store prefixed rules
|
|
// inside rulesToInsert object to be able to preserve the order of media
|
|
// rules and merge them easily
|
|
let cloned = gridAreaRule.clone()
|
|
cloned.removeAll()
|
|
|
|
getMSDecls(area, area.row.updateSpan, area.column.updateSpan)
|
|
.reverse()
|
|
.forEach(i =>
|
|
cloned.prepend(
|
|
Object.assign(i, {
|
|
raws: {
|
|
between: gridArea.raws.between
|
|
}
|
|
})
|
|
)
|
|
)
|
|
|
|
if (rule.hasDuplicates && hasDuplicateName) {
|
|
cloned.selectors = changeDuplicateAreaSelectors(
|
|
cloned.selectors,
|
|
rule.selectors
|
|
)
|
|
}
|
|
|
|
cloned.raws = rule.node.raws
|
|
|
|
if (css.index(rule.node.parent) > gridAreaRuleIndex) {
|
|
// append the prefixed rules right inside media rule
|
|
// with grid-template
|
|
rule.node.parent.append(cloned)
|
|
} else {
|
|
// store the rule to insert later
|
|
rulesToInsert[lastArea][rule.params].push(cloned)
|
|
}
|
|
|
|
// set new rule as last rule ONLY if we didn't set lastRule for
|
|
// this grid-area before
|
|
if (!lastRuleIsSet) {
|
|
rulesToInsert[lastArea].lastRule = gridAreaMedia || gridAreaRule
|
|
}
|
|
}
|
|
}
|
|
|
|
return undefined
|
|
})
|
|
|
|
// append stored rules inside the media rules
|
|
Object.keys(rulesToInsert).forEach(area => {
|
|
let data = rulesToInsert[area]
|
|
let lastRule = data.lastRule
|
|
Object.keys(data)
|
|
.reverse()
|
|
.filter(p => p !== 'lastRule')
|
|
.forEach(params => {
|
|
if (data[params].length > 0 && lastRule) {
|
|
lastRule.after({ name: 'media', params })
|
|
lastRule.next().append(data[params])
|
|
}
|
|
})
|
|
})
|
|
|
|
return undefined
|
|
}
|
|
|
|
/**
|
|
* Warn user if grid area identifiers are not found
|
|
* @param {Object} areas
|
|
* @param {Declaration} decl
|
|
* @param {Result} result
|
|
* @return {void}
|
|
*/
|
|
exports.warnMissedAreas = warnMissedAreas
|
|
|
|
function warnMissedAreas(areas, decl, result) {
|
|
let missed = Object.keys(areas)
|
|
|
|
decl.root().walkDecls('grid-area', gridArea => {
|
|
missed = missed.filter(e => e !== gridArea.value)
|
|
})
|
|
|
|
if (missed.length > 0) {
|
|
decl.warn(result, 'Can not find grid areas: ' + missed.join(', '))
|
|
}
|
|
|
|
return undefined
|
|
}
|
|
|
|
/**
|
|
* compare selectors with grid-area rule and grid-template rule
|
|
* show warning if grid-template selector is not found
|
|
* (this function used for grid-area rule)
|
|
* @param {Declaration} decl
|
|
* @param {Result} result
|
|
* @return {void}
|
|
*/
|
|
exports.warnTemplateSelectorNotFound = warnTemplateSelectorNotFound
|
|
|
|
function warnTemplateSelectorNotFound(decl, result) {
|
|
let rule = decl.parent
|
|
let root = decl.root()
|
|
let duplicatesFound = false
|
|
|
|
// slice selector array. Remove the last part (for comparison)
|
|
let slicedSelectorArr = list
|
|
.space(rule.selector)
|
|
.filter(str => str !== '>')
|
|
.slice(0, -1)
|
|
|
|
// we need to compare only if selector is complex.
|
|
// e.g '.grid-cell' is simple, but '.parent > .grid-cell' is complex
|
|
if (slicedSelectorArr.length > 0) {
|
|
let gridTemplateFound = false
|
|
let foundAreaSelector = null
|
|
|
|
root.walkDecls(/grid-template(-areas)?$/, d => {
|
|
let parent = d.parent
|
|
let templateSelectors = parent.selectors
|
|
|
|
let { areas } = parseTemplate({ decl: d, gap: getGridGap(d) })
|
|
let hasArea = areas[decl.value]
|
|
|
|
// find the the matching selectors
|
|
for (let tplSelector of templateSelectors) {
|
|
if (gridTemplateFound) {
|
|
break
|
|
}
|
|
let tplSelectorArr = list.space(tplSelector).filter(str => str !== '>')
|
|
|
|
gridTemplateFound = tplSelectorArr.every(
|
|
(item, idx) => item === slicedSelectorArr[idx]
|
|
)
|
|
}
|
|
|
|
if (gridTemplateFound || !hasArea) {
|
|
return true
|
|
}
|
|
|
|
if (!foundAreaSelector) {
|
|
foundAreaSelector = parent.selector
|
|
}
|
|
|
|
// if we found the duplicate area with different selector
|
|
if (foundAreaSelector && foundAreaSelector !== parent.selector) {
|
|
duplicatesFound = true
|
|
}
|
|
|
|
return undefined
|
|
})
|
|
|
|
// warn user if we didn't find template
|
|
if (!gridTemplateFound && duplicatesFound) {
|
|
decl.warn(
|
|
result,
|
|
'Autoprefixer cannot find a grid-template ' +
|
|
`containing the duplicate grid-area "${decl.value}" ` +
|
|
`with full selector matching: ${slicedSelectorArr.join(' ')}`
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* warn user if both grid-area and grid-(row|column)
|
|
* declarations are present in the same rule
|
|
* @param {Declaration} decl
|
|
* @param {Result} result
|
|
* @return {void}
|
|
*/
|
|
exports.warnIfGridRowColumnExists = warnIfGridRowColumnExists
|
|
|
|
function warnIfGridRowColumnExists(decl, result) {
|
|
let rule = decl.parent
|
|
let decls = []
|
|
rule.walkDecls(/^grid-(row|column)/, d => {
|
|
if (
|
|
!d.prop.endsWith('-end') &&
|
|
!d.value.startsWith('span') &&
|
|
!d.prop.endsWith('-gap')
|
|
) {
|
|
decls.push(d)
|
|
}
|
|
})
|
|
if (decls.length > 0) {
|
|
decls.forEach(d => {
|
|
d.warn(
|
|
result,
|
|
'You already have a grid-area declaration present in the rule. ' +
|
|
`You should use either grid-area or ${d.prop}, not both`
|
|
)
|
|
})
|
|
}
|
|
|
|
return undefined
|
|
}
|
|
|
|
// Gap utils
|
|
|
|
exports.getGridGap = getGridGap
|
|
|
|
function getGridGap(decl) {
|
|
let gap = {}
|
|
|
|
// try to find gap
|
|
let testGap = /^(grid-)?((row|column)-)?gap$/
|
|
decl.parent.walkDecls(testGap, ({ prop, value }) => {
|
|
if (/^(grid-)?gap$/.test(prop)) {
|
|
let [row, , column] = parser(value).nodes
|
|
|
|
gap.row = row && parser.stringify(row)
|
|
gap.column = column ? parser.stringify(column) : gap.row
|
|
}
|
|
if (/^(grid-)?row-gap$/.test(prop)) gap.row = value
|
|
if (/^(grid-)?column-gap$/.test(prop)) gap.column = value
|
|
})
|
|
|
|
return gap
|
|
}
|
|
|
|
/**
|
|
* parse media parameters (for example 'min-width: 500px')
|
|
* @param {String} params parameter to parse
|
|
* @return {}
|
|
*/
|
|
function parseMediaParams(params) {
|
|
if (!params) {
|
|
return []
|
|
}
|
|
let parsed = parser(params)
|
|
let prop
|
|
let value
|
|
|
|
parsed.walk(node => {
|
|
if (node.type === 'word' && /min|max/g.test(node.value)) {
|
|
prop = node.value
|
|
} else if (node.value.includes('px')) {
|
|
value = parseInt(node.value.replace(/\D/g, ''))
|
|
}
|
|
})
|
|
|
|
return [prop, value]
|
|
}
|
|
|
|
/**
|
|
* Compare the selectors and decide if we
|
|
* need to inherit gap from compared selector or not.
|
|
* @type {String} selA
|
|
* @type {String} selB
|
|
* @return {Boolean}
|
|
*/
|
|
function shouldInheritGap(selA, selB) {
|
|
let result
|
|
|
|
// get arrays of selector split in 3-deep array
|
|
let splitSelectorArrA = splitSelector(selA)
|
|
let splitSelectorArrB = splitSelector(selB)
|
|
|
|
if (splitSelectorArrA[0].length < splitSelectorArrB[0].length) {
|
|
// abort if selectorA has lower descendant specificity then selectorB
|
|
// (e.g '.grid' and '.hello .world .grid')
|
|
return false
|
|
} else if (splitSelectorArrA[0].length > splitSelectorArrB[0].length) {
|
|
// if selectorA has higher descendant specificity then selectorB
|
|
// (e.g '.foo .bar .grid' and '.grid')
|
|
|
|
let idx = splitSelectorArrA[0].reduce((res, [item], index) => {
|
|
let firstSelectorPart = splitSelectorArrB[0][0][0]
|
|
if (item === firstSelectorPart) {
|
|
return index
|
|
}
|
|
return false
|
|
}, false)
|
|
|
|
if (idx) {
|
|
result = splitSelectorArrB[0].every((arr, index) => {
|
|
return arr.every(
|
|
(part, innerIndex) =>
|
|
// because selectorA has more space elements, we need to slice
|
|
// selectorA array by 'idx' number to compare them
|
|
splitSelectorArrA[0].slice(idx)[index][innerIndex] === part
|
|
)
|
|
})
|
|
}
|
|
} else {
|
|
// if selectorA has the same descendant specificity as selectorB
|
|
// this condition covers cases such as: '.grid.foo.bar' and '.grid'
|
|
result = splitSelectorArrB.some(byCommaArr => {
|
|
return byCommaArr.every((bySpaceArr, index) => {
|
|
return bySpaceArr.every(
|
|
(part, innerIndex) => splitSelectorArrA[0][index][innerIndex] === part
|
|
)
|
|
})
|
|
})
|
|
}
|
|
|
|
return result
|
|
}
|
|
/**
|
|
* inherit grid gap values from the closest rule above
|
|
* with the same selector
|
|
* @param {Declaration} decl
|
|
* @param {Object} gap gap values
|
|
* @return {Object | Boolean} return gap values or false (if not found)
|
|
*/
|
|
exports.inheritGridGap = inheritGridGap
|
|
|
|
function inheritGridGap(decl, gap) {
|
|
let rule = decl.parent
|
|
let mediaRule = getParentMedia(rule)
|
|
let root = rule.root()
|
|
|
|
// get an array of selector split in 3-deep array
|
|
let splitSelectorArr = splitSelector(rule.selector)
|
|
|
|
// abort if the rule already has gaps
|
|
if (Object.keys(gap).length > 0) {
|
|
return false
|
|
}
|
|
|
|
// e.g ['min-width']
|
|
let [prop] = parseMediaParams(mediaRule.params)
|
|
|
|
let lastBySpace = splitSelectorArr[0]
|
|
|
|
// get escaped value from the selector
|
|
// if we have '.grid-2.foo.bar' selector, will be '\.grid\-2'
|
|
let escaped = escapeRegexp(lastBySpace[lastBySpace.length - 1][0])
|
|
|
|
let regexp = new RegExp(`(${escaped}$)|(${escaped}[,.])`)
|
|
|
|
// find the closest rule with the same selector
|
|
let closestRuleGap
|
|
root.walkRules(regexp, r => {
|
|
let gridGap
|
|
|
|
// abort if are checking the same rule
|
|
if (rule.toString() === r.toString()) {
|
|
return false
|
|
}
|
|
|
|
// find grid-gap values
|
|
r.walkDecls('grid-gap', d => (gridGap = getGridGap(d)))
|
|
|
|
// skip rule without gaps
|
|
if (!gridGap || Object.keys(gridGap).length === 0) {
|
|
return true
|
|
}
|
|
|
|
// skip rules that should not be inherited from
|
|
if (!shouldInheritGap(rule.selector, r.selector)) {
|
|
return true
|
|
}
|
|
|
|
let media = getParentMedia(r)
|
|
if (media) {
|
|
// if we are inside media, we need to check that media props match
|
|
// e.g ('min-width' === 'min-width')
|
|
let propToCompare = parseMediaParams(media.params)[0]
|
|
if (propToCompare === prop) {
|
|
closestRuleGap = gridGap
|
|
return true
|
|
}
|
|
} else {
|
|
closestRuleGap = gridGap
|
|
return true
|
|
}
|
|
|
|
return undefined
|
|
})
|
|
|
|
// if we find the closest gap object
|
|
if (closestRuleGap && Object.keys(closestRuleGap).length > 0) {
|
|
return closestRuleGap
|
|
}
|
|
return false
|
|
}
|
|
|
|
exports.warnGridGap = warnGridGap
|
|
|
|
function warnGridGap({ decl, gap, hasColumns, result }) {
|
|
let hasBothGaps = gap.row && gap.column
|
|
if (!hasColumns && (hasBothGaps || (gap.column && !gap.row))) {
|
|
delete gap.column
|
|
decl.warn(
|
|
result,
|
|
'Can not implement grid-gap without grid-template-columns'
|
|
)
|
|
}
|
|
}
|
|
|
|
/**
|
|
* normalize the grid-template-rows/columns values
|
|
* @param {String} str grid-template-rows/columns value
|
|
* @return {Array} normalized array with values
|
|
* @example
|
|
* let normalized = normalizeRowColumn('1fr repeat(2, 20px 50px) 1fr')
|
|
* normalized // <= ['1fr', '20px', '50px', '20px', '50px', '1fr']
|
|
*/
|
|
function normalizeRowColumn(str) {
|
|
let normalized = parser(str).nodes.reduce((result, node) => {
|
|
if (node.type === 'function' && node.value === 'repeat') {
|
|
let key = 'count'
|
|
|
|
let [count, value] = node.nodes.reduce(
|
|
(acc, n) => {
|
|
if (n.type === 'word' && key === 'count') {
|
|
acc[0] = Math.abs(parseInt(n.value))
|
|
return acc
|
|
}
|
|
if (n.type === 'div' && n.value === ',') {
|
|
key = 'value'
|
|
return acc
|
|
}
|
|
if (key === 'value') {
|
|
acc[1] += parser.stringify(n)
|
|
}
|
|
return acc
|
|
},
|
|
[0, '']
|
|
)
|
|
|
|
if (count) {
|
|
for (let i = 0; i < count; i++) {
|
|
result.push(value)
|
|
}
|
|
}
|
|
|
|
return result
|
|
}
|
|
if (node.type === 'space') {
|
|
return result
|
|
}
|
|
return result.concat(parser.stringify(node))
|
|
}, [])
|
|
|
|
return normalized
|
|
}
|
|
|
|
exports.autoplaceGridItems = autoplaceGridItems
|
|
|
|
/**
|
|
* Autoplace grid items
|
|
* @param {Declaration} decl
|
|
* @param {Result} result
|
|
* @param {Object} gap gap values
|
|
* @param {String} autoflowValue grid-auto-flow value
|
|
* @return {void}
|
|
* @see https://github.com/postcss/autoprefixer/issues/1148
|
|
*/
|
|
function autoplaceGridItems(decl, result, gap, autoflowValue = 'row') {
|
|
let { parent } = decl
|
|
|
|
let rowDecl = parent.nodes.find(i => i.prop === 'grid-template-rows')
|
|
let rows = normalizeRowColumn(rowDecl.value)
|
|
let columns = normalizeRowColumn(decl.value)
|
|
|
|
// Build array of area names with dummy values. If we have 3 columns and
|
|
// 2 rows, filledRows will be equal to ['1 2 3', '4 5 6']
|
|
let filledRows = rows.map((_, rowIndex) => {
|
|
return Array.from(
|
|
{ length: columns.length },
|
|
(v, k) => k + rowIndex * columns.length + 1
|
|
).join(' ')
|
|
})
|
|
|
|
let areas = parseGridAreas({ gap, rows: filledRows })
|
|
let keys = Object.keys(areas)
|
|
let items = keys.map(i => areas[i])
|
|
|
|
// Change the order of cells if grid-auto-flow value is 'column'
|
|
if (autoflowValue.includes('column')) {
|
|
items = items.sort((a, b) => a.column.start - b.column.start)
|
|
}
|
|
|
|
// Insert new rules
|
|
items.reverse().forEach((item, index) => {
|
|
let { column, row } = item
|
|
let nodeSelector = parent.selectors
|
|
.map(sel => sel + ` > *:nth-child(${keys.length - index})`)
|
|
.join(', ')
|
|
|
|
// create new rule
|
|
let node = parent.clone().removeAll()
|
|
|
|
// change rule selector
|
|
node.selector = nodeSelector
|
|
|
|
// insert prefixed row/column values
|
|
node.append({ prop: '-ms-grid-row', value: row.start })
|
|
node.append({ prop: '-ms-grid-column', value: column.start })
|
|
|
|
// insert rule
|
|
parent.after(node)
|
|
})
|
|
|
|
return undefined
|
|
}
|