svgedit/editor/jquery-svg.js

76 lines
1.8 KiB
JavaScript

/* eslint-disable no-var */
/* globals $, jQuery */
/**
* jQuery module to work with SVG.
*
* Licensed under the MIT License
*
*/
// Dependencies:
// 1) jquery
(function () {
'use strict';
// This fixes $(...).attr() to work as expected with SVG elements.
// Does not currently use *AttributeNS() since we rarely need that.
// See http://api.jquery.com/attr/ for basic documentation of .attr()
// Additional functionality:
// - When getting attributes, a string that's a number is return as type number.
// - If an array is supplied as first parameter, multiple values are returned
// as an object with values for each given attributes
var proxied = jQuery.fn.attr,
// TODO use NS.SVG instead
svgns = 'http://www.w3.org/2000/svg';
jQuery.fn.attr = function (key, value) {
var i, attr;
var len = this.length;
if (!len) { return proxied.apply(this, arguments); }
for (i = 0; i < len; ++i) {
var elem = this[i];
// set/get SVG attribute
if (elem.namespaceURI === svgns) {
// Setting attribute
if (value !== undefined) {
elem.setAttribute(key, value);
} else if ($.isArray(key)) {
// Getting attributes from array
var j = key.length, obj = {};
while (j--) {
var aname = key[j];
attr = elem.getAttribute(aname);
// This returns a number when appropriate
if (attr || attr === '0') {
attr = isNaN(attr) ? attr : (attr - 0);
}
obj[aname] = attr;
}
return obj;
}
if (typeof key === 'object') {
// Setting attributes form object
var v;
for (v in key) {
elem.setAttribute(v, key[v]);
}
// Getting attribute
} else {
attr = elem.getAttribute(key);
if (attr || attr === '0') {
attr = isNaN(attr) ? attr : (attr - 0);
}
return attr;
}
} else {
return proxied.apply(this, arguments);
}
}
return this;
};
}());