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Versions: 14
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Contents
define([
'kbn'
],
function (kbn) {
'use strict';
/**
* manages the interval logic
* @param {[type]} interval_string An interval string in the format '1m', '1y', etc
*/
function Interval(interval_string) {
this.string = interval_string;
var info = kbn.describe_interval(interval_string);
this.type = info.type;
this.ms = Math.ceil(info.sec * 1000 * info.count);
// does the length of the interval change based on the current time?
if (this.type === 'y' || this.type === 'M') {
// we will just modify this time object rather that create a new one constantly
this.get = this.get_complex;
this.date = new Date(0);
} else {
this.get = this.get_simple;
}
}
Interval.prototype = {
toString: function () {
return this.string;
},
after: function(current_ms) {
return this.get(current_ms, 1);
},
before: function (current_ms) {
return this.get(current_ms, -1);
},
get_complex: function (current, delta) {
this.date.setTime(current);
switch(this.type) {
case 'M':
this.date.setUTCMonth(this.date.getUTCMonth() + delta);
break;
case 'y':
this.date.setUTCFullYear(this.date.getUTCFullYear() + delta);
break;
}
return this.date.getTime();
},
get_simple: function (current, delta) {
return current + (delta * this.ms);
}
};
return Interval;
});
Version data entries
14 entries across 7 versions & 1 rubygems