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<h1 class="page-title">Source: jquery-plugin/range-change.js</h1>
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<pre class="prettyprint source linenums"><code>
import $ from '../jquery/jquery';
let mouseIn = false;
let mouseDown = false;
let timeout = null;
let dragged = false;
let lastVal;
/**
* Created by gavorhes on 11/2/2015.
*/
function triggerCallback(callback, evt) {
"use strict";
let val = parseFloat(this.value);
let min = parseFloat(this.min);
let max = parseFloat(this.max);
let step = parseFloat(this.step);
if (max - val < step){
val = max;
}
let percent = (val - min) / (max - min);
if (typeof lastVal == 'number' && val == lastVal){
return;
}
lastVal = val;
callback(val, percent, evt);
}
/**
* callback on range change interaction, context of this is the firing dom element
* @callback rangeChangeCallback
* @param {number} newValue
* @param {number} ratio value from 0 to 1 relative of the value to the min and max
* @param {object} evt
*/
/**
* Add a variety of listeners for range inputs applied to a common callback
* @param {rangeChangeCallback} callback - the callback
* @param {number} [changeTimeout=75] before the callback is called
* @this {jQuery}
* @returns {jQuery} the jQuery object
*/
$.fn.rangeChange = function (callback, changeTimeout) {
changeTimeout = typeof changeTimeout == 'number' ? changeTimeout : 75;
this.mouseenter(function () {
mouseIn = true;
});
this.mouseleave(function () {
mouseIn = false;
mouseDown = false;
});
this.mousedown(function () {
mouseDown = true;
});
this.mouseup(function () {
mouseDown = false;
});
this.mousemove(
/**
*
* @param {object} evt - event properties
* @this {HTMLElement}
*/
function (evt) {
if (!(mouseIn && mouseDown)) {
return;
}
dragged = true;
if (lastVal == this['value']) {
return;
}
lastVal = this['value'];
if (timeout != null) {
clearTimeout(timeout);
}
let _this = this;
timeout = setTimeout(function () {
triggerCallback.call(_this, callback, evt);
timeout = null;
}, changeTimeout);
});
this.keyup(
/**
*
* @param {object} evt - event properties
*/
function (evt) {
if (evt.keyCode == 37 || evt.keyCode == 39) {
triggerCallback.call(this, callback, evt);
}
});
this.change(function (evt) {
if (dragged) {
dragged = false;
return;
}
triggerCallback.call(this, callback, evt);
});
return this;
};
export default undefined;
</code></pre>
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