lepu-test-platform-web/node_modules/postcss-merge-longhand/dist/lib/decl/borders.js

442 lines
15 KiB
JavaScript

'use strict';
exports.__esModule = true;
var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
var _postcss = require('postcss');
var _stylehacks = require('stylehacks');
var _objectAssign = require('object-assign');
var _objectAssign2 = _interopRequireDefault(_objectAssign);
var _clone = require('../clone');
var _clone2 = _interopRequireDefault(_clone);
var _genericMerge = require('../genericMerge');
var _genericMerge2 = _interopRequireDefault(_genericMerge);
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 _getLastNode = require('../getLastNode');
var _getLastNode2 = _interopRequireDefault(_getLastNode);
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 _minifyTrbl = require('../minifyTrbl');
var _minifyTrbl2 = _interopRequireDefault(_minifyTrbl);
var _canMerge = require('../canMerge');
var _canMerge2 = _interopRequireDefault(_canMerge);
var _colorMerge = require('../colorMerge');
var _colorMerge2 = _interopRequireDefault(_colorMerge);
var _remove = require('../remove');
var _remove2 = _interopRequireDefault(_remove);
var _trbl = require('../trbl');
var _trbl2 = _interopRequireDefault(_trbl);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var wsc = ['width', 'style', 'color'];
var defaults = ['medium', 'none', 'currentColor'];
var borderProperty = function borderProperty(property) {
return 'border-' + property;
};
var directions = _trbl2.default.map(borderProperty);
var properties = wsc.map(borderProperty);
function mergeRedundant(_ref) {
var values = _ref.values;
var nextValues = _ref.nextValues;
var decl = _ref.decl;
var nextDecl = _ref.nextDecl;
var index = _ref.index;
var position = _ref.position;
var prop = _ref.prop;
var props = (0, _parseTrbl2.default)(values[position]);
props[index] = nextValues[position];
values.splice(position, 1);
var borderValue = values.join(' ');
var propertyValue = (0, _minifyTrbl2.default)(props);
var origLength = (decl.value + nextDecl.prop + nextDecl.value).length;
var newLength = borderValue.length + 12 + propertyValue.length;
if (newLength < origLength) {
decl.value = borderValue;
nextDecl.prop = prop;
nextDecl.value = propertyValue;
}
}
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(function (a, b) {
a = Array.isArray(a) ? a : [a];
if (!~a.indexOf(b)) {
a.push(b);
}
return a;
});
}
function explode(rule) {
if (rule.nodes.some(_stylehacks.detect)) {
return false;
}
rule.walkDecls(/^border/, function (decl) {
// Don't explode inherit values as they cannot be merged together
if (decl.value === 'inherit') {
return;
}
var prop = decl.prop;
// border -> border-trbl
if (prop === 'border') {
directions.forEach(function (direction) {
(0, _insertCloned2.default)(rule, decl, { prop: direction });
});
return decl.remove();
}
// border-trbl -> border-trbl-wsc
if (directions.some(function (direction) {
return prop === direction;
})) {
var _ret = function () {
var values = _postcss.list.space(decl.value);
wsc.forEach(function (d, i) {
(0, _insertCloned2.default)(rule, decl, {
prop: prop + '-' + d,
value: values[i] || defaults[i]
});
});
return {
v: decl.remove()
};
}();
if ((typeof _ret === 'undefined' ? 'undefined' : _typeof(_ret)) === "object") return _ret.v;
}
// border-wsc -> border-trbl-wsc
wsc.some(function (style) {
if (prop !== 'border-' + style) {
return false;
}
(0, _parseTrbl2.default)(decl.value).forEach(function (value, i) {
(0, _insertCloned2.default)(rule, decl, {
prop: 'border-' + _trbl2.default[i] + '-' + style,
value: value
});
});
return decl.remove();
});
});
}
var borderProperties = _trbl2.default.reduce(function (props, direction) {
return [].concat(props, wsc.map(function (style) {
return 'border-' + direction + '-' + style;
}));
}, []);
function merge(rule) {
// Lift all inherit values from the rule, so that they don't
// interfere with the merging logic.
var inheritValues = (0, _getDecls2.default)(rule, borderProperties).reduce(function (values, decl) {
if (decl.value === 'inherit') {
decl.remove();
return [].concat(values, [decl]);
}
return values;
}, []);
// border-trbl-wsc -> border-trbl
_trbl2.default.forEach(function (direction) {
var prop = borderProperty(direction);
(0, _genericMerge2.default)({
rule: rule,
prop: prop,
properties: wsc.map(function (style) {
return prop + '-' + style;
}),
value: function value(rules) {
return rules.map(_getValue2.default).join(' ');
}
});
});
// border-trbl-wsc -> border-wsc
wsc.forEach(function (style) {
var prop = borderProperty(style);
if (style === 'color') {
return (0, _colorMerge2.default)({
rule: rule,
prop: prop,
properties: _trbl2.default.map(function (direction) {
return 'border-' + direction + '-' + style;
}),
value: function value(rules) {
return (0, _minifyTrbl2.default)(rules.map(_getValue2.default).join(' '));
}
});
}
return (0, _genericMerge2.default)({
rule: rule,
prop: prop,
properties: _trbl2.default.map(function (direction) {
return 'border-' + direction + '-' + style;
}),
value: function value(rules) {
return (0, _minifyTrbl2.default)(rules.map(_getValue2.default).join(' '));
},
sanitize: false
});
});
// border-trbl -> border-wsc
var decls = (0, _getDecls2.default)(rule, directions);
var _loop = function _loop() {
var lastNode = decls[decls.length - 1];
var props = decls.filter(function (node) {
return node.important === lastNode.important;
});
var rules = (0, _getRules2.default)(props, directions);
if (_hasAllProps2.default.apply(undefined, [props].concat(directions))) {
wsc.forEach(function (d, i) {
(0, _insertCloned2.default)(rule, lastNode, {
prop: borderProperty(d),
value: (0, _minifyTrbl2.default)(rules.map(function (node) {
return _postcss.list.space(node.value)[i];
}))
});
});
props.forEach(_remove2.default);
}
decls = decls.filter(function (node) {
return !~rules.indexOf(node);
});
};
while (decls.length) {
_loop();
}
// border-wsc -> border
// border-wsc -> border + border-color
// border-wsc -> border + border-dir
decls = (0, _getDecls2.default)(rule, properties);
var _loop2 = function _loop2() {
var lastNode = decls[decls.length - 1];
var props = decls.filter(function (node) {
return node.important === lastNode.important;
});
if (_hasAllProps2.default.apply(undefined, [props].concat(properties))) {
(function () {
var rules = properties.map(function (prop) {
return (0, _getLastNode2.default)(props, prop);
});
var width = rules[0];
var style = rules[1];
var color = rules[2];
var values = rules.map(function (node) {
return (0, _parseTrbl2.default)(node.value);
});
var mapped = [0, 1, 2, 3].map(function (i) {
return [values[0][i], values[1][i], values[2][i]].join(' ');
});
var reduced = getDistinctShorthands(mapped);
if (isCloseEnough(mapped) && _canMerge2.default.apply(undefined, rules)) {
var first = mapped.indexOf(reduced[0]) !== mapped.lastIndexOf(reduced[0]);
var border = (0, _insertCloned2.default)(rule, lastNode, {
prop: 'border',
value: first ? reduced[0] : reduced[1]
});
if (reduced[1]) {
var value = first ? reduced[1] : reduced[0];
var prop = 'border-' + _trbl2.default[mapped.indexOf(value)];
rule.insertAfter(border, (0, _objectAssign2.default)((0, _clone2.default)(lastNode), {
prop: prop,
value: value
}));
}
props.forEach(_remove2.default);
} else if (reduced.length === 1) {
rule.insertBefore(color, (0, _objectAssign2.default)((0, _clone2.default)(lastNode), {
prop: 'border',
value: [width, style].map(_getValue2.default).join(' ')
}));
props.filter(function (node) {
return node.prop !== properties[2];
}).forEach(_remove2.default);
}
})();
}
decls = decls.filter(function (node) {
return !~props.indexOf(node);
});
};
while (decls.length) {
_loop2();
}
// optimize border-trbl
decls = (0, _getDecls2.default)(rule, directions);
var _loop3 = function _loop3() {
var lastNode = decls[decls.length - 1];
wsc.forEach(function (d, i) {
var names = directions.filter(function (name) {
return name !== lastNode.prop;
}).map(function (name) {
return name + '-' + d;
});
var props = rule.nodes.filter(function (node) {
return node.prop && ~names.indexOf(node.prop) && node.important === lastNode.important;
});
if (_hasAllProps2.default.apply(undefined, [props].concat(names))) {
var values = directions.map(function (prop) {
return (0, _getLastNode2.default)(props, prop + '-' + d);
}).map(function (node) {
return node ? node.value : null;
});
var filteredValues = values.filter(Boolean);
var lastNodeValue = _postcss.list.space(lastNode.value)[i];
values[directions.indexOf(lastNode.prop)] = lastNodeValue;
var value = (0, _minifyTrbl2.default)(values.join(' '));
if (filteredValues[0] === filteredValues[1] && filteredValues[1] === filteredValues[2]) {
value = filteredValues[0];
}
var refNode = props[props.length - 1];
if (value === lastNodeValue) {
refNode = lastNode;
var valueArray = _postcss.list.space(lastNode.value);
valueArray.splice(i, 1);
lastNode.value = valueArray.join(' ');
}
(0, _insertCloned2.default)(rule, refNode, {
prop: 'border-' + d,
value: value
});
props.forEach(_remove2.default);
}
});
decls = decls.filter(function (node) {
return node !== lastNode;
});
};
while (decls.length) {
_loop3();
}
rule.walkDecls('border', function (decl) {
var nextDecl = decl.next();
if (!nextDecl || nextDecl.type !== 'decl') {
return;
}
var index = directions.indexOf(nextDecl.prop);
if (!~index) {
return;
}
var values = _postcss.list.space(decl.value);
var nextValues = _postcss.list.space(nextDecl.value);
var config = {
values: values,
nextValues: nextValues,
decl: decl,
nextDecl: nextDecl,
index: index
};
if (values[0] === nextValues[0] && values[2] === nextValues[2]) {
return mergeRedundant(_extends({}, config, {
position: 1,
prop: 'border-style'
}));
}
if (values[1] === nextValues[1] && values[2] === nextValues[2]) {
return mergeRedundant(_extends({}, config, {
position: 0,
prop: 'border-width'
}));
}
if (values[0] === nextValues[0] && values[1] === nextValues[1] && values[2] && nextValues[2]) {
return mergeRedundant(_extends({}, config, {
position: 2,
prop: 'border-color'
}));
}
});
// clean-up values
rule.walkDecls(/^border($|-(top|right|bottom|left))/, function (decl) {
var value = [].concat(_postcss.list.space(decl.value), ['']).reduceRight(function (prev, cur, i) {
if (prev === '' && cur === defaults[i]) {
return prev;
}
return cur + ' ' + prev;
}).trim() || defaults[0];
decl.value = (0, _minifyTrbl2.default)(value);
});
// Restore inherited values
inheritValues.forEach(function (decl) {
return rule.append(decl);
});
}
exports.default = {
explode: explode,
merge: merge
};
module.exports = exports['default'];