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'use strict';
const { inheritableAttrs, pathElems } = require('./_collections');
exports.type = 'perItemReverse';
exports.active = true;
exports.description = 'moves elements attributes to the existing group wrapper';
/**
* Collapse content's intersected and inheritable
* attributes to the existing group wrapper.
*
* @example
*
*
* text
*
*
*
* ⬇
*
*
* text
*
*
*
*
* @param {Object} item current iteration item
* @return {Boolean} if false, item will be filtered out
*
* @author Kir Belevich
*/
exports.fn = function (item) {
if (
item.type === 'element' &&
item.name === 'g' &&
item.children.length > 1
) {
var intersection = {},
hasTransform = false,
hasClip =
item.attributes['clip-path'] != null || item.attributes.mask != null,
intersected = item.children.every(function (inner) {
if (
inner.type === 'element' &&
Object.keys(inner.attributes).length !== 0
) {
// don't mess with possible styles (hack until CSS parsing is implemented)
if (inner.attributes.class) return false;
if (!Object.keys(intersection).length) {
intersection = inner.attributes;
} else {
intersection = intersectInheritableAttrs(
intersection,
inner.attributes
);
if (!intersection) return false;
}
return true;
}
}),
allPath = item.children.every(function (inner) {
return inner.isElem(pathElems);
});
if (intersected) {
item.children.forEach(function (g) {
for (const [name, value] of Object.entries(intersection)) {
if ((!allPath && !hasClip) || name !== 'transform') {
delete g.attributes[name];
if (name === 'transform') {
if (!hasTransform) {
if (item.attributes.transform != null) {
item.attributes.transform =
item.attributes.transform + ' ' + value;
} else {
item.attributes.transform = value;
}
hasTransform = true;
}
} else {
item.attributes[name] = value;
}
}
}
});
}
}
};
/**
* Intersect inheritable attributes.
*
* @param {Object} a first attrs object
* @param {Object} b second attrs object
*
* @return {Object} intersected attrs object
*/
function intersectInheritableAttrs(a, b) {
var c = {};
for (const [name, value] of Object.entries(a)) {
if (
// eslint-disable-next-line no-prototype-builtins
b.hasOwnProperty(name) &&
inheritableAttrs.includes(name) &&
value === b[name]
) {
c[name] = value;
}
}
if (!Object.keys(c).length) return false;
return c;
}