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class.js
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class.js
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// Copyright (c) 2014 Adobe Systems Incorporated. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
Snap.plugin(function (Snap, Element, Paper, glob, Fragment) {
var rgNotSpace = /\S+/g,
rgBadSpace = /[\t\r\n\f]/g,
rgTrim = /(^\s+|\s+$)/g,
Str = String,
elproto = Element.prototype;
/*\
* Element.addClass
[ method ]
**
* Adds given class name or list of class names to the element.
- value (string) class name or space separated list of class names
**
= (Element) original element.
\*/
elproto.addClass = function (value) {
var classes = Str(value || "").match(rgNotSpace) || [],
elem = this.node,
className = elem.className.baseVal,
curClasses = className.match(rgNotSpace) || [],
j,
pos,
clazz,
finalValue;
if (classes.length) {
j = 0;
while (clazz = classes[j++]) {
pos = curClasses.indexOf(clazz);
if (!~pos) {
curClasses.push(clazz);
}
}
finalValue = curClasses.join(" ");
if (className != finalValue) {
elem.className.baseVal = finalValue;
}
}
return this;
};
/*\
* Element.removeClass
[ method ]
**
* Removes given class name or list of class names from the element.
- value (string) class name or space separated list of class names
**
= (Element) original element.
\*/
elproto.removeClass = function (value) {
var classes = Str(value || "").match(rgNotSpace) || [],
elem = this.node,
className = elem.className.baseVal,
curClasses = className.match(rgNotSpace) || [],
j,
pos,
clazz,
finalValue;
if (curClasses.length) {
j = 0;
while (clazz = classes[j++]) {
pos = curClasses.indexOf(clazz);
if (~pos) {
curClasses.splice(pos, 1);
}
}
finalValue = curClasses.join(" ");
if (className != finalValue) {
elem.className.baseVal = finalValue;
}
}
return this;
};
/*\
* Element.hasClass
[ method ]
**
* Checks if the element has a given class name in the list of class names applied to it.
- value (string) class name
**
= (boolean) `true` if the element has given class
\*/
elproto.hasClass = function (value) {
var elem = this.node,
className = elem.className.baseVal,
curClasses = className.match(rgNotSpace) || [];
return !!~curClasses.indexOf(value);
};
/*\
* Element.toggleClass
[ method ]
**
* Add or remove one or more classes from the element, depending on either
* the class’s presence or the value of the `flag` argument.
- value (string) class name or space separated list of class names
- flag (boolean) value to determine whether the class should be added or removed
**
= (Element) original element.
\*/
elproto.toggleClass = function (value, flag) {
if (flag != null) {
if (flag) {
return this.addClass(value);
} else {
return this.removeClass(value);
}
}
var classes = (value || "").match(rgNotSpace) || [],
elem = this.node,
className = elem.className.baseVal,
curClasses = className.match(rgNotSpace) || [],
j,
pos,
clazz,
finalValue;
j = 0;
while (clazz = classes[j++]) {
pos = curClasses.indexOf(clazz);
if (~pos) {
curClasses.splice(pos, 1);
} else {
curClasses.push(clazz);
}
}
finalValue = curClasses.join(" ");
if (className != finalValue) {
elem.className.baseVal = finalValue;
}
return this;
};
});