80 lines
2.5 KiB
JavaScript
80 lines
2.5 KiB
JavaScript
/**
|
|
* A jQuery module to work with SVG attributes.
|
|
* @module jQueryAttr
|
|
* @license MIT
|
|
*/
|
|
|
|
/**
|
|
* This fixes `$(...).attr()` to work as expected with SVG elements.
|
|
* Does not currently use `*AttributeNS()` since we rarely need that.
|
|
* Adds {@link external:jQuery.fn.attr}.
|
|
* See {@link https://api.jquery.com/attr/} for basic documentation of `.attr()`.
|
|
*
|
|
* Additional functionality:
|
|
* - When getting attributes, a string that's a number is returned as type number.
|
|
* - If an array is supplied as the first parameter, multiple values are returned
|
|
* as an object with values for each given attribute.
|
|
* @function module:jQueryAttr.jQueryAttr
|
|
* @param {external:jQuery} $ The jQuery object to which to add the plug-in
|
|
* @returns {external:jQuery}
|
|
*/
|
|
export default function jQueryPluginSVG ($) {
|
|
const proxied = $.fn.attr,
|
|
svgns = 'http://www.w3.org/2000/svg';
|
|
/**
|
|
* @typedef {PlainObject<string, string|Float>} module:jQueryAttr.Attributes
|
|
*/
|
|
/**
|
|
* @function external:jQuery.fn.attr
|
|
* @param {string|string[]|PlainObject<string, string>} key
|
|
* @param {string} value
|
|
* @returns {external:jQuery|module:jQueryAttr.Attributes}
|
|
*/
|
|
$.fn.attr = function (key, value) {
|
|
const len = this.length;
|
|
if (!len) { return proxied.call(this, key, value); }
|
|
for (let i = 0; i < len; ++i) {
|
|
const elem = this[i];
|
|
// set/get SVG attribute
|
|
if (elem.namespaceURI === svgns) {
|
|
// Setting attribute
|
|
if (value !== undefined) {
|
|
elem.setAttribute(key, value);
|
|
} else if (Array.isArray(key)) {
|
|
// Getting attributes from array
|
|
const obj = {};
|
|
let j = key.length;
|
|
|
|
while (j--) {
|
|
const aname = key[j];
|
|
let 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 from object
|
|
for (const [name, val] of Object.entries(key)) {
|
|
elem.setAttribute(name, val);
|
|
}
|
|
// Getting attribute
|
|
} else {
|
|
let attr = elem.getAttribute(key);
|
|
if (attr || attr === '0') {
|
|
attr = isNaN(attr) ? attr : (attr - 0);
|
|
}
|
|
return attr;
|
|
}
|
|
} else {
|
|
return proxied.call(this, key, value);
|
|
}
|
|
}
|
|
return this;
|
|
};
|
|
return $;
|
|
}
|