Files
openmct/src/selection/HoverGesture.js
2017-04-05 14:52:46 -07:00

59 lines
2.1 KiB
JavaScript

/*****************************************************************************
* Open MCT, Copyright (c) 2014-2017, United States Government
* as represented by the Administrator of the National Aeronautics and Space
* Administration. All rights reserved.
*
* Open MCT is 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.
*
* Open MCT includes source code licensed under additional open source
* licenses. See the Open Source Licenses file (LICENSES.md) included with
* this source code distribution or the Licensing information page available
* at runtime from the About dialog for additional information.
*****************************************************************************/
define(['zepto'], function ($) {
function HoverGesture(hoverManager) {
this.hoverManager = hoverManager;
}
HoverGesture.prototype.apply = function (htmlElement) {
var $element = $(htmlElement);
var hoverManager = this.hoverManager;
function update() {
$(hoverManager.all()).removeClass('hovering');
$(hoverManager.top()).addClass('hovering');
}
function enter() {
hoverManager.add(htmlElement);
update();
}
function leave() {
hoverManager.remove(htmlElement);
update();
}
$element.on('mouseenter', enter);
$element.on('mouseleave', leave);
return function () {
leave();
$element.off('mouseenter', enter);
$element.off('mouseleave', leave);
}.bind(this);
};
return HoverGesture;
});