can
Version:
MIT-licensed, client-side, JavaScript framework that makes building rich web applications easy.
54 lines (53 loc) • 1.81 kB
JavaScript
/*!
* CanJS - 2.3.34
* http://canjs.com/
* Copyright (c) 2018 Bitovi
* Mon, 30 Apr 2018 20:56:51 GMT
* Licensed MIT
*/
/*can@2.3.34#view/stache/live_attr*/
define([
'can/util/library',
'can/view/live',
'can/elements',
'can/view/callbacks'
], function (can, live, elements, viewCallbacks) {
live = live || can.view.live;
elements = elements || can.view.elements;
viewCallbacks = viewCallbacks || can.view.callbacks;
return {
attributes: function (el, compute, scope, options) {
var oldAttrs = {};
var setAttrs = function (newVal) {
var newAttrs = live.getAttributeParts(newVal), name;
for (name in newAttrs) {
var newValue = newAttrs[name], oldValue = oldAttrs[name];
if (newValue !== oldValue) {
can.attr.set(el, name, newValue);
var callback = viewCallbacks.attr(name);
if (callback) {
callback(el, {
attributeName: name,
scope: scope,
options: options
});
}
}
delete oldAttrs[name];
}
for (name in oldAttrs) {
elements.removeAttr(el, name);
}
oldAttrs = newAttrs;
};
var handler = function (ev, newVal) {
setAttrs(newVal);
};
compute.bind('change', handler);
can.bind.call(el, 'removed', function () {
compute.unbind('change', handler);
});
setAttrs(compute());
}
};
});