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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _postcss = require('postcss');
var _stylehacks = require('stylehacks');
var _insertCloned = require('../insertCloned');
var _insertCloned2 = _interopRequireDefault(_insertCloned);
var _parseTrbl = require('../parseTrbl');
var _parseTrbl2 = _interopRequireDefault(_parseTrbl);
var _hasAllProps = require('../hasAllProps');
var _hasAllProps2 = _interopRequireDefault(_hasAllProps);
var _getDecls = require('../getDecls');
var _getDecls2 = _interopRequireDefault(_getDecls);
var _getRules = require('../getRules');
var _getRules2 = _interopRequireDefault(_getRules);
var _getValue = require('../getValue');
var _getValue2 = _interopRequireDefault(_getValue);
var _mergeRules = require('../mergeRules');
var _mergeRules2 = _interopRequireDefault(_mergeRules);
var _minifyTrbl = require('../minifyTrbl');
var _minifyTrbl2 = _interopRequireDefault(_minifyTrbl);
var _minifyWsc = require('../minifyWsc');
var _minifyWsc2 = _interopRequireDefault(_minifyWsc);
var _canMerge = require('../canMerge');
var _canMerge2 = _interopRequireDefault(_canMerge);
var _remove = require('../remove');
var _remove2 = _interopRequireDefault(_remove);
var _trbl = require('../trbl');
var _trbl2 = _interopRequireDefault(_trbl);
var _isCustomProp = require('../isCustomProp');
var _isCustomProp2 = _interopRequireDefault(_isCustomProp);
var _canExplode = require('../canExplode');
var _canExplode2 = _interopRequireDefault(_canExplode);
var _getLastNode = require('../getLastNode');
var _getLastNode2 = _interopRequireDefault(_getLastNode);
var _parseWsc = require('../parseWsc');
var _parseWsc2 = _interopRequireDefault(_parseWsc);
var _validateWsc = require('../validateWsc');
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const wsc = ['width', 'style', 'color'];
const defaults = ['medium', 'none', 'currentcolor'];
function borderProperty(...parts) {
return `border-${parts.join('-')}`;
}
function mapBorderProperty(value) {
return borderProperty(value);
}
const directions = _trbl2.default.map(mapBorderProperty);
const properties = wsc.map(mapBorderProperty);
const directionalProperties = directions.reduce((prev, curr) => prev.concat(wsc.map(prop => `${curr}-${prop}`)), []);
const precedence = [['border'], directions.concat(properties), directionalProperties];
const allProperties = precedence.reduce((a, b) => a.concat(b));
function getLevel(prop) {
for (let i = 0; i < precedence.length; i++) {
if (!!~precedence[i].indexOf(prop.toLowerCase())) {
return i;
}
}
}
const isValueCustomProp = value => value && !!~value.search(/var\s*\(\s*--/i);
function canMergeValues(values) {
return !values.some(isValueCustomProp) || values.every(isValueCustomProp);
}
function getColorValue(decl) {
if (decl.prop.substr(-5) === 'color') {
return decl.value;
}
return (0, _parseWsc2.default)(decl.value)[2] || defaults[2];
}
function diffingProps(values, nextValues) {
return wsc.reduce((prev, curr, i) => {
if (values[i] === nextValues[i]) {
return prev;
}
return [...prev, curr];
}, []);
}
function mergeRedundant({ values, nextValues, decl, nextDecl, index }) {
if (!(0, _canMerge2.default)([decl, nextDecl])) {
return;
}
if ((0, _stylehacks.detect)(decl) || (0, _stylehacks.detect)(nextDecl)) {
return;
}
const diff = diffingProps(values, nextValues);
if (diff.length > 1) {
return;
}
const prop = diff.pop();
const position = wsc.indexOf(prop);
const prop1 = `${nextDecl.prop}-${prop}`;
const prop2 = `border-${prop}`;
let props = (0, _parseTrbl2.default)(values[position]);
props[index] = nextValues[position];
const borderValue2 = values.filter((e, i) => i !== position).join(' ');
const propValue2 = (0, _minifyTrbl2.default)(props);
const origLength = ((0, _minifyWsc2.default)(decl.value) + nextDecl.prop + nextDecl.value).length;
const newLength1 = decl.value.length + prop1.length + (0, _minifyWsc2.default)(nextValues[position]).length;
const newLength2 = borderValue2.length + prop2.length + propValue2.length;
if (newLength1 < newLength2 && newLength1 < origLength) {
nextDecl.prop = prop1;
nextDecl.value = nextValues[position];
}
if (newLength2 < newLength1 && newLength2 < origLength) {
decl.value = borderValue2;
nextDecl.prop = prop2;
nextDecl.value = propValue2;
}
}
function isCloseEnough(mapped) {
return mapped[0] === mapped[1] && mapped[1] === mapped[2] || mapped[1] === mapped[2] && mapped[2] === mapped[3] || mapped[2] === mapped[3] && mapped[3] === mapped[0] || mapped[3] === mapped[0] && mapped[0] === mapped[1];
}
function getDistinctShorthands(mapped) {
return mapped.reduce((a, b) => {
a = Array.isArray(a) ? a : [a];
if (!~a.indexOf(b)) {
a.push(b);
}
return a;
});
}
function explode(rule) {
rule.walkDecls(/^border/i, decl => {
if (!(0, _canExplode2.default)(decl, false)) {
return;
}
if ((0, _stylehacks.detect)(decl)) {
return;
}
const prop = decl.prop.toLowerCase();
// border -> border-trbl
if (prop === 'border') {
if ((0, _validateWsc.isValidWsc)((0, _parseWsc2.default)(decl.value))) {
directions.forEach(direction => {
(0, _insertCloned2.default)(decl.parent, decl, { prop: direction });
});
return decl.remove();
}
}
// border-trbl -> border-trbl-wsc
if (directions.some(direction => prop === direction)) {
let values = (0, _parseWsc2.default)(decl.value);
if ((0, _validateWsc.isValidWsc)(values)) {
wsc.forEach((d, i) => {
(0, _insertCloned2.default)(decl.parent, decl, {
prop: `${prop}-${d}`,
value: values[i] || defaults[i]
});
});
return decl.remove();
}
}
// border-wsc -> border-trbl-wsc
wsc.some(style => {
if (prop !== borderProperty(style)) {
return false;
}
(0, _parseTrbl2.default)(decl.value).forEach((value, i) => {
(0, _insertCloned2.default)(decl.parent, decl, {
prop: borderProperty(_trbl2.default[i], style),
value
});
});
return decl.remove();
});
});
}
function merge(rule) {
// border-trbl-wsc -> border-trbl
_trbl2.default.forEach(direction => {
const prop = borderProperty(direction);
(0, _mergeRules2.default)(rule, wsc.map(style => borderProperty(direction, style)), (rules, lastNode) => {
if ((0, _canMerge2.default)(rules, false) && !rules.some(_stylehacks.detect)) {
(0, _insertCloned2.default)(lastNode.parent, lastNode, {
prop,
value: rules.map(_getValue2.default).join(' ')
});
rules.forEach(_remove2.default);
return true;
}
});
});
// border-trbl-wsc -> border-wsc
wsc.forEach(style => {
const prop = borderProperty(style);
(0, _mergeRules2.default)(rule, _trbl2.default.map(direction => borderProperty(direction, style)), (rules, lastNode) => {
if ((0, _canMerge2.default)(rules) && !rules.some(_stylehacks.detect)) {
(0, _insertCloned2.default)(lastNode.parent, lastNode, {
prop,
value: (0, _minifyTrbl2.default)(rules.map(_getValue2.default).join(' '))
});
rules.forEach(_remove2.default);
return true;
}
});
});
// border-trbl -> border-wsc
(0, _mergeRules2.default)(rule, directions, (rules, lastNode) => {
if (rules.some(_stylehacks.detect)) {
return;
}
const values = rules.map(({ value }) => value);
if (!canMergeValues(values)) {
return;
}
const parsed = values.map(value => (0, _parseWsc2.default)(value));
if (!parsed.every(_validateWsc.isValidWsc)) {
return;
}
wsc.forEach((d, i) => {
const value = parsed.map(v => v[i] || defaults[i]);
if (canMergeValues(value)) {
(0, _insertCloned2.default)(lastNode.parent, lastNode, {
prop: borderProperty(d),
value: (0, _minifyTrbl2.default)(value)
});
} else {
(0, _insertCloned2.default)(lastNode.parent, lastNode);
}
});
rules.forEach(_remove2.default);
return true;
});
// border-wsc -> border
// border-wsc -> border + border-color
// border-wsc -> border + border-dir
(0, _mergeRules2.default)(rule, properties, (rules, lastNode) => {
if (rules.some(_stylehacks.detect)) {
return;
}
const values = rules.map(node => (0, _parseTrbl2.default)(node.value));
const mapped = [0, 1, 2, 3].map(i => [values[0][i], values[1][i], values[2][i]].join(' '));
if (!canMergeValues(mapped)) {
return;
}
const [width, style, color] = rules;
const reduced = getDistinctShorthands(mapped);
if (isCloseEnough(mapped) && (0, _canMerge2.default)(rules, false)) {
const first = mapped.indexOf(reduced[0]) !== mapped.lastIndexOf(reduced[0]);
const border = (0, _insertCloned2.default)(lastNode.parent, lastNode, {
prop: 'border',
value: first ? reduced[0] : reduced[1]
});
if (reduced[1]) {
const value = first ? reduced[1] : reduced[0];
const prop = borderProperty(_trbl2.default[mapped.indexOf(value)]);
rule.insertAfter(border, Object.assign(lastNode.clone(), {
prop,
value
}));
}
rules.forEach(_remove2.default);
return true;
} else if (reduced.length === 1) {
rule.insertBefore(color, Object.assign(lastNode.clone(), {
prop: 'border',
value: [width, style].map(_getValue2.default).join(' ')
}));
rules.filter(node => node.prop.toLowerCase() !== properties[2]).forEach(_remove2.default);
return true;
}
});
// border-wsc -> border + border-trbl
(0, _mergeRules2.default)(rule, properties, (rules, lastNode) => {
if (rules.some(_stylehacks.detect)) {
return;
}
const values = rules.map(node => (0, _parseTrbl2.default)(node.value));
const mapped = [0, 1, 2, 3].map(i => [values[0][i], values[1][i], values[2][i]].join(' '));
const reduced = getDistinctShorthands(mapped);
const none = 'medium none currentcolor';
if (reduced.length > 1 && reduced.length < 4 && reduced.includes(none)) {
const filtered = mapped.filter(p => p !== none);
const mostCommon = reduced.sort((a, b) => mapped.filter(v => v === b).length - mapped.filter(v => v === a).length)[0];
const borderValue = reduced.length === 2 ? filtered[0] : mostCommon;
rule.insertBefore(lastNode, Object.assign(lastNode.clone(), {
prop: 'border',
value: borderValue
}));
directions.forEach((dir, i) => {
if (mapped[i] !== borderValue) {
rule.insertBefore(lastNode, Object.assign(lastNode.clone(), {
prop: dir,
value: mapped[i]
}));
}
});
rules.forEach(_remove2.default);
return true;
}
});
// border-trbl -> border
// border-trbl -> border + border-trbl
(0, _mergeRules2.default)(rule, directions, (rules, lastNode) => {
if (rules.some(_stylehacks.detect)) {
return;
}
const values = rules.map(node => {
const wscValue = (0, _parseWsc2.default)(node.value);
if (!(0, _validateWsc.isValidWsc)(wscValue)) {
return node.value;
}
return wscValue.map((value, i) => value || defaults[i]).join(' ');
});
const reduced = getDistinctShorthands(values);
if (isCloseEnough(values)) {
const first = values.indexOf(reduced[0]) !== values.lastIndexOf(reduced[0]);
rule.insertBefore(lastNode, Object.assign(lastNode.clone(), {
prop: 'border',
value: (0, _minifyWsc2.default)(first ? values[0] : values[1])
}));
if (reduced[1]) {
const value = first ? reduced[1] : reduced[0];
const prop = directions[values.indexOf(value)];
rule.insertBefore(lastNode, Object.assign(lastNode.clone(), {
prop: prop,
value: (0, _minifyWsc2.default)(value)
}));
}
rules.forEach(_remove2.default);
return true;
}
});
// border-trbl-wsc + border-trbl (custom prop) -> border-trbl + border-trbl-wsc (custom prop)
directions.forEach(direction => {
wsc.forEach((style, i) => {
const prop = `${direction}-${style}`;
(0, _mergeRules2.default)(rule, [direction, prop], (rules, lastNode) => {
if (lastNode.prop !== direction) {
return;
}
const values = (0, _parseWsc2.default)(lastNode.value);
if (!(0, _validateWsc.isValidWsc)(values)) {
return;
}
const wscProp = rules.filter(r => r !== lastNode)[0];
if (!isValueCustomProp(values[i]) || (0, _isCustomProp2.default)(wscProp)) {
return;
}
const wscValue = values[i];
values[i] = wscProp.value;
if ((0, _canMerge2.default)(rules, false) && !rules.some(_stylehacks.detect)) {
(0, _insertCloned2.default)(lastNode.parent, lastNode, {
prop,
value: wscValue
});
lastNode.value = (0, _minifyWsc2.default)(values);
wscProp.remove();
return true;
}
});
});
});
// border-wsc + border (custom prop) -> border + border-wsc (custom prop)
wsc.forEach((style, i) => {
const prop = borderProperty(style);
(0, _mergeRules2.default)(rule, ['border', prop], (rules, lastNode) => {
if (lastNode.prop !== 'border') {
return;
}
const values = (0, _parseWsc2.default)(lastNode.value);
if (!(0, _validateWsc.isValidWsc)(values)) {
return;
}
const wscProp = rules.filter(r => r !== lastNode)[0];
if (!isValueCustomProp(values[i]) || (0, _isCustomProp2.default)(wscProp)) {
return;
}
const wscValue = values[i];
values[i] = wscProp.value;
if ((0, _canMerge2.default)(rules, false) && !rules.some(_stylehacks.detect)) {
(0, _insertCloned2.default)(lastNode.parent, lastNode, {
prop,
value: wscValue
});
lastNode.value = (0, _minifyWsc2.default)(values);
wscProp.remove();
return true;
}
});
});
// optimize border-trbl
let decls = (0, _getDecls2.default)(rule, directions);
while (decls.length) {
const lastNode = decls[decls.length - 1];
wsc.forEach((d, i) => {
const names = directions.filter(name => name !== lastNode.prop).map(name => `${name}-${d}`);
let nodes = rule.nodes.slice(0, rule.nodes.indexOf(lastNode));
const border = (0, _getLastNode2.default)(nodes, 'border');
if (border) {
nodes = nodes.slice(nodes.indexOf(border));
}
const props = nodes.filter(node => node.prop && ~names.indexOf(node.prop) && node.important === lastNode.important);
const rules = (0, _getRules2.default)(props, names);
if ((0, _hasAllProps2.default)(rules, ...names) && !rules.some(_stylehacks.detect)) {
const values = rules.map(node => node ? node.value : null);
const filteredValues = values.filter(Boolean);
const lastNodeValue = _postcss.list.space(lastNode.value)[i];
values[directions.indexOf(lastNode.prop)] = lastNodeValue;
let value = (0, _minifyTrbl2.default)(values.join(' '));
if (filteredValues[0] === filteredValues[1] && filteredValues[1] === filteredValues[2]) {
value = filteredValues[0];
}
let refNode = props[props.length - 1];
if (value === lastNodeValue) {
refNode = lastNode;
let valueArray = _postcss.list.space(lastNode.value);
valueArray.splice(i, 1);
lastNode.value = valueArray.join(' ');
}
(0, _insertCloned2.default)(refNode.parent, refNode, {
prop: borderProperty(d),
value
});
decls = decls.filter(node => !~rules.indexOf(node));
rules.forEach(_remove2.default);
}
});
decls = decls.filter(node => node !== lastNode);
}
rule.walkDecls('border', decl => {
const nextDecl = decl.next();
if (!nextDecl || nextDecl.type !== 'decl') {
return;
}
const index = directions.indexOf(nextDecl.prop);
if (!~index) {
return;
}
const values = (0, _parseWsc2.default)(decl.value);
const nextValues = (0, _parseWsc2.default)(nextDecl.value);
if (!(0, _validateWsc.isValidWsc)(values) || !(0, _validateWsc.isValidWsc)(nextValues)) {
return;
}
const config = {
values,
nextValues,
decl,
nextDecl,
index
};
return mergeRedundant(config);
});
rule.walkDecls(/^border($|-(top|right|bottom|left)$)/i, decl => {
let values = (0, _parseWsc2.default)(decl.value);
if (!(0, _validateWsc.isValidWsc)(values)) {
return;
}
const position = directions.indexOf(decl.prop);
let dirs = [...directions];
dirs.splice(position, 1);
wsc.forEach((d, i) => {
const props = dirs.map(dir => `${dir}-${d}`);
(0, _mergeRules2.default)(rule, [decl.prop, ...props], rules => {
if (!rules.includes(decl)) {
return;
}
const longhands = rules.filter(p => p !== decl);
if (longhands[0].value.toLowerCase() === longhands[1].value.toLowerCase() && longhands[1].value.toLowerCase() === longhands[2].value.toLowerCase() && longhands[0].value.toLowerCase() === values[i].toLowerCase()) {
longhands.forEach(_remove2.default);
(0, _insertCloned2.default)(decl.parent, decl, {
prop: borderProperty(d),
value: values[i]
});
values[i] = null;
}
});
const newValue = values.join(' ');
if (newValue) {
decl.value = newValue;
} else {
decl.remove();
}
});
});
// clean-up values
rule.walkDecls(/^border($|-(top|right|bottom|left)$)/i, decl => {
decl.value = (0, _minifyWsc2.default)(decl.value);
});
// border-spacing-hv -> border-spacing
rule.walkDecls(/^border-spacing$/i, decl => {
const value = _postcss.list.space(decl.value);
// merge vertical and horizontal dups
if (value.length > 1 && value[0] === value[1]) {
decl.value = value.slice(1).join(' ');
}
});
// clean-up rules
decls = (0, _getDecls2.default)(rule, allProperties);
while (decls.length) {
const lastNode = decls[decls.length - 1];
const lastPart = lastNode.prop.split('-').pop();
// remove properties of lower precedence
const lesser = decls.filter(node => !(0, _stylehacks.detect)(lastNode) && !(0, _stylehacks.detect)(node) && !(0, _isCustomProp2.default)(lastNode) && node !== lastNode && node.important === lastNode.important && getLevel(node.prop) > getLevel(lastNode.prop) && (!!~node.prop.toLowerCase().indexOf(lastNode.prop) || node.prop.toLowerCase().endsWith(lastPart)));
lesser.forEach(_remove2.default);
decls = decls.filter(node => !~lesser.indexOf(node));
// get duplicate properties
let duplicates = decls.filter(node => !(0, _stylehacks.detect)(lastNode) && !(0, _stylehacks.detect)(node) && node !== lastNode && node.important === lastNode.important && node.prop === lastNode.prop && !(!(0, _isCustomProp2.default)(node) && (0, _isCustomProp2.default)(lastNode)));
if (duplicates.length) {
if (/hsla\(|rgba\(/i.test(getColorValue(lastNode))) {
const preserve = duplicates.filter(node => !/hsla\(|rgba\(/i.test(getColorValue(node))).pop();
duplicates = duplicates.filter(node => node !== preserve);
}
duplicates.forEach(_remove2.default);
}
decls = decls.filter(node => node !== lastNode && !~duplicates.indexOf(node));
}
}
exports.default = {
explode,
merge
};
module.exports = exports['default'];