aaac7fed
 liuqimichale
add
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'use strict';
function _defaults(obj, defaults) { var keys = Object.getOwnPropertyNames(defaults); for (var i = 0; i < keys.length; i++) { var key = keys[i]; var value = Object.getOwnPropertyDescriptor(defaults, key); if (value && value.configurable && obj[key] === undefined) { Object.defineProperty(obj, key, value); } } return obj; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : _defaults(subClass, superClass); }
var Declaration = require('../declaration');
var DOTS = /^\.+$/;
function track(start, end) {
return { start: start, end: end, span: end - start };
}
function getRows(tpl) {
return tpl.trim().slice(1, -1).split(/['"]\s*['"]?/g);
}
function getColumns(line) {
return line.trim().split(/\s+/g);
}
function parseGridAreas(tpl) {
return getRows(tpl).reduce(function (areas, line, rowIndex) {
if (line.trim() === '') return areas;
getColumns(line).forEach(function (area, columnIndex) {
if (DOTS.test(area)) return;
if (typeof areas[area] === 'undefined') {
areas[area] = {
column: track(columnIndex + 1, columnIndex + 2),
row: track(rowIndex + 1, rowIndex + 2)
};
} else {
var _areas$area = areas[area],
column = _areas$area.column,
row = _areas$area.row;
column.start = Math.min(column.start, columnIndex + 1);
column.end = Math.max(column.end, columnIndex + 2);
column.span = column.end - column.start;
row.start = Math.min(row.start, rowIndex + 1);
row.end = Math.max(row.end, rowIndex + 2);
row.span = row.end - row.start;
}
});
return areas;
}, {});
}
var GridTemplateAreas = function (_Declaration) {
_inherits(GridTemplateAreas, _Declaration);
function GridTemplateAreas() {
_classCallCheck(this, GridTemplateAreas);
return _possibleConstructorReturn(this, _Declaration.apply(this, arguments));
}
GridTemplateAreas.prototype.getRoot = function getRoot(parent) {
if (parent.type === 'atrule' || !parent.parent) {
return parent;
}
return this.getRoot(parent.parent);
};
/**
* Translate grid-template-areas to separate -ms- prefixed properties
*/
GridTemplateAreas.prototype.insert = function insert(decl, prefix, prefixes, result) {
if (prefix !== '-ms-') return _Declaration.prototype.insert.call(this, decl, prefix, prefixes);
var areas = parseGridAreas(decl.value);
var missed = Object.keys(areas);
this.getRoot(decl.parent).walkDecls('grid-area', function (gridArea) {
var value = gridArea.value;
var area = areas[value];
missed = missed.filter(function (e) {
return e !== value;
});
if (area) {
gridArea.parent.walkDecls(/-ms-grid-(row|column)/, function (d) {
d.remove();
});
gridArea.cloneBefore({
prop: '-ms-grid-row',
value: String(area.row.start)
});
if (area.row.span > 1) {
gridArea.cloneBefore({
prop: '-ms-grid-row-span',
value: String(area.row.span)
});
}
gridArea.cloneBefore({
prop: '-ms-grid-column',
value: String(area.column.start)
});
if (area.column.span > 1) {
gridArea.cloneBefore({
prop: '-ms-grid-column-span',
value: String(area.column.span)
});
}
}
return undefined;
});
if (missed.length > 0) {
decl.warn(result, 'Can not find grid areas: ' + missed.join(', '));
}
return decl;
};
return GridTemplateAreas;
}(Declaration);
Object.defineProperty(GridTemplateAreas, 'names', {
enumerable: true,
writable: true,
value: ['grid-template-areas']
});
module.exports = GridTemplateAreas;
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