361 lines
11 KiB
JavaScript
361 lines
11 KiB
JavaScript
8 years ago
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/*!
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* datepair.js v0.4.15 - A javascript plugin for intelligently selecting date and time ranges inspired by Google Calendar.
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* Copyright (c) 2016 Jon Thornton - http://jonthornton.github.com/Datepair.js
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* License: MIT
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*/
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(function(window, document) {
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'use strict';
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var _ONE_DAY = 86400000;
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var jq = window.Zepto || window.jQuery;
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function simpleExtend(obj1, obj2) {
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var out = obj2 || {};
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for (var i in obj1) {
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if (!(i in out)) {
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out[i] = obj1[i];
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}
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}
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return out;
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}
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// IE's custom event support is totally borked.
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// Use jQuery if possible
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function triggerSimpleCustomEvent(el, eventName) {
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if (jq) {
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jq(el).trigger(eventName);
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} else {
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var event = document.createEvent('CustomEvent');
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event.initCustomEvent(eventName, true, true, {});
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el.dispatchEvent(event);
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}
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}
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// el.classList not supported by < IE10
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// use jQuery if available
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function hasClass(el, className) {
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if (jq) {
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return jq(el).hasClass(className);
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} else {
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return el.classList.contains(className);
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}
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}
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function Datepair(container, options) {
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this.dateDelta = null;
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this.timeDelta = null;
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this._defaults = {
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startClass: 'start',
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endClass: 'end',
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timeClass: 'time',
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dateClass: 'date',
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defaultDateDelta: 0,
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defaultTimeDelta: 3600000,
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anchor: 'start',
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// defaults for jquery-timepicker; override when using other input widgets
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parseTime: function(input){
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return jq(input).timepicker('getTime');
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},
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updateTime: function(input, dateObj){
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jq(input).timepicker('setTime', dateObj);
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},
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setMinTime: function(input, dateObj){
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jq(input).timepicker('option', 'minTime', dateObj);
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},
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// defaults for bootstrap datepicker; override when using other input widgets
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parseDate: function(input){
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return input.value && jq(input).datepicker('getDate');
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},
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updateDate: function(input, dateObj){
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jq(input).datepicker('update', dateObj);
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}
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};
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this.container = container;
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this.settings = simpleExtend(this._defaults, options);
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this.startDateInput = this.container.querySelector('.'+this.settings.startClass+'.'+this.settings.dateClass);
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this.endDateInput = this.container.querySelector('.'+this.settings.endClass+'.'+this.settings.dateClass);
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this.startTimeInput = this.container.querySelector('.'+this.settings.startClass+'.'+this.settings.timeClass);
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this.endTimeInput = this.container.querySelector('.'+this.settings.endClass+'.'+this.settings.timeClass);
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// initialize date and time deltas
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this.refresh();
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// init starts here
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this._bindChangeHandler();
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}
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Datepair.prototype = {
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constructor: Datepair,
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option: function(key, value)
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{
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if (typeof key == 'object') {
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this.settings = simpleExtend(this.settings, key);
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} else if (typeof key == 'string' && typeof value != 'undefined') {
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this.settings[key] = value;
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} else if (typeof key == 'string') {
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return this.settings[key];
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}
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this._updateEndMintime();
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},
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getTimeDiff: function()
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{
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// due to the fact that times can wrap around, timeDiff for any
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// time-only pair will always be >= 0
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var delta = this.dateDelta + this.timeDelta;
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if (delta < 0 && (!this.startDateInput || !this.endDateInput) ) {
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delta += _ONE_DAY;
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}
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return delta;
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},
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refresh: function()
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{
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if (this.startDateInput && this.startDateInput.value && this.endDateInput && this.endDateInput.value) {
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var startDate = this.settings.parseDate(this.startDateInput);
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var endDate = this.settings.parseDate(this.endDateInput);
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if (startDate && endDate) {
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this.dateDelta = endDate.getTime() - startDate.getTime();
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}
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}
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if (this.startTimeInput && this.startTimeInput.value && this.endTimeInput && this.endTimeInput.value) {
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var startTime = this.settings.parseTime(this.startTimeInput);
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var endTime = this.settings.parseTime(this.endTimeInput);
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if (startTime && endTime) {
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this.timeDelta = endTime.getTime() - startTime.getTime();
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this._updateEndMintime();
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}
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}
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},
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remove: function()
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{
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this._unbindChangeHandler();
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},
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_bindChangeHandler: function(){
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// addEventListener doesn't work with synthetic "change" events
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// fired by jQuery's trigger() functioin. If jQuery is present,
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// use that for event binding
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if (jq) {
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jq(this.container).on('change.datepair', jq.proxy(this.handleEvent, this));
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} else {
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this.container.addEventListener('change', this, false);
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}
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},
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_unbindChangeHandler: function(){
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if (jq) {
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jq(this.container).off('change.datepair');
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} else {
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this.container.removeEventListener('change', this, false);
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}
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},
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// This function will be called when passing 'this' to addEventListener
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handleEvent: function(e){
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// temporarily unbind the change handler to prevent triggering this
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// if we update other inputs
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this._unbindChangeHandler();
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if (hasClass(e.target, this.settings.dateClass)) {
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if (e.target.value != '') {
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this._dateChanged(e.target);
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this._timeChanged(e.target);
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} else {
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this.dateDelta = null;
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}
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} else if (hasClass(e.target, this.settings.timeClass)) {
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if (e.target.value != '') {
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this._timeChanged(e.target);
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} else {
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this.timeDelta = null;
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}
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}
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this._validateRanges();
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this._updateEndMintime();
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this._bindChangeHandler();
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},
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_dateChanged: function(target){
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if (!this.startDateInput || !this.endDateInput) {
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return;
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}
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var startDate = this.settings.parseDate(this.startDateInput);
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var endDate = this.settings.parseDate(this.endDateInput);
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if (!startDate || !endDate) {
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if (this.settings.defaultDateDelta !== null) {
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if (startDate) {
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var newEnd = new Date(startDate.getTime() + this.settings.defaultDateDelta * _ONE_DAY);
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this.settings.updateDate(this.endDateInput, newEnd);
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} else if (endDate) {
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var newStart = new Date(endDate.getTime() - this.settings.defaultDateDelta * _ONE_DAY);
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this.settings.updateDate(this.startDateInput, newStart);
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}
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this.dateDelta = this.settings.defaultDateDelta * _ONE_DAY;
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} else {
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this.dateDelta = null;
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}
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return;
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}
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if (this.settings.anchor == 'start' && hasClass(target, this.settings.startClass)) {
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var newDate = new Date(startDate.getTime() + this.dateDelta);
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this.settings.updateDate(this.endDateInput, newDate);
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} else if (this.settings.anchor == 'end' && hasClass(target, this.settings.endClass)) {
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var newDate = new Date(endDate.getTime() - this.dateDelta);
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this.settings.updateDate(this.startDateInput, newDate);
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} else {
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if (endDate < startDate) {
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var otherInput = hasClass(target, this.settings.startClass) ? this.endDateInput : this.startDateInput;
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var selectedDate = this.settings.parseDate(target);
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this.dateDelta = 0;
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this.settings.updateDate(otherInput, selectedDate);
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} else {
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this.dateDelta = endDate.getTime() - startDate.getTime();
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}
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}
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},
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_timeChanged: function(target){
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if (!this.startTimeInput || !this.endTimeInput) {
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return;
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}
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var startTime = this.settings.parseTime(this.startTimeInput);
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var endTime = this.settings.parseTime(this.endTimeInput);
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if (!startTime || !endTime) {
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if (this.settings.defaultTimeDelta !== null) {
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if (startTime) {
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var newEnd = new Date(startTime.getTime() + this.settings.defaultTimeDelta);
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this.settings.updateTime(this.endTimeInput, newEnd);
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} else if (endTime) {
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var newStart = new Date(endTime.getTime() - this.settings.defaultTimeDelta);
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this.settings.updateTime(this.startTimeInput, newStart);
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}
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this.timeDelta = this.settings.defaultTimeDelta;
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} else {
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this.timeDelta = null;
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}
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return;
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}
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if (this.settings.anchor == 'start' && hasClass(target, this.settings.startClass)) {
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var newTime = new Date(startTime.getTime() + this.timeDelta);
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this.settings.updateTime(this.endTimeInput, newTime);
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endTime = this.settings.parseTime(this.endTimeInput);
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this._doMidnightRollover(startTime, endTime);
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} else if (this.settings.anchor == 'end' && hasClass(target, this.settings.endClass)) {
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var newTime = new Date(endTime.getTime() - this.timeDelta);
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this.settings.updateTime(this.startTimeInput, newTime);
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startTime = this.settings.parseTime(this.startTimeInput);
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this._doMidnightRollover(startTime, endTime);
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} else {
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this._doMidnightRollover(startTime, endTime);
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var startDate, endDate;
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if (this.startDateInput && this.endDateInput) {
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startDate = this.settings.parseDate(this.startDateInput);
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endDate = this.settings.parseDate(this.endDateInput);
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}
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if ((+startDate == +endDate) && (endTime < startTime)) {
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var thisInput = hasClass(target, this.settings.endClass) ? this.endTimeInput : this.startTimeInput;
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var otherInput = hasClass(target, this.settings.startClass) ? this.endTimeInput : this.startTimeInput;
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var selectedTime = this.settings.parseTime(thisInput);
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this.timeDelta = 0;
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this.settings.updateTime(otherInput, selectedTime);
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} else {
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this.timeDelta = endTime.getTime() - startTime.getTime();
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}
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}
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},
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_doMidnightRollover: function(startTime, endTime) {
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if (!this.startDateInput || !this.endDateInput) {
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return;
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}
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var endDate = this.settings.parseDate(this.endDateInput);
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var startDate = this.settings.parseDate(this.startDateInput);
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var newDelta = endTime.getTime() - startTime.getTime();
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var offset = (endTime < startTime) ? _ONE_DAY : -1 * _ONE_DAY;
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if (this.dateDelta !== null
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&& this.dateDelta + this.timeDelta <= _ONE_DAY
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&& this.dateDelta + newDelta != 0
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&& (offset > 0 || this.dateDelta != 0)
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&& ((newDelta >= 0 && this.timeDelta < 0) || (newDelta < 0 && this.timeDelta >= 0))) {
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if (this.settings.anchor == 'start') {
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this.settings.updateDate(this.endDateInput, new Date(endDate.getTime() + offset));
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this._dateChanged(this.endDateInput);
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} else if (this.settings.anchor == 'end') {
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this.settings.updateDate(this.startDateInput, new Date(startDate.getTime() - offset));
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this._dateChanged(this.startDateInput);
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}
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}
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this.timeDelta = newDelta;
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},
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_updateEndMintime: function(){
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if (typeof this.settings.setMinTime != 'function') return;
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var baseTime = null;
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if (this.settings.anchor == 'start' && (!this.dateDelta || this.dateDelta < _ONE_DAY || (this.timeDelta && this.dateDelta + this.timeDelta < _ONE_DAY))) {
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baseTime = this.settings.parseTime(this.startTimeInput);
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}
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this.settings.setMinTime(this.endTimeInput, baseTime);
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},
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_validateRanges: function(){
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if (this.startTimeInput && this.endTimeInput && this.timeDelta === null) {
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triggerSimpleCustomEvent(this.container, 'rangeIncomplete');
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return;
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}
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if (this.startDateInput && this.endDateInput && this.dateDelta === null) {
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triggerSimpleCustomEvent(this.container, 'rangeIncomplete');
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return;
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}
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// due to the fact that times can wrap around, any time-only pair will be considered valid
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if (!this.startDateInput || !this.endDateInput || this.dateDelta + this.timeDelta >= 0) {
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triggerSimpleCustomEvent(this.container, 'rangeSelected');
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} else {
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triggerSimpleCustomEvent(this.container, 'rangeError');
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}
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}
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};
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window.Datepair = Datepair;
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}(window, document));
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