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datepicker.js
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datepicker.js
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// ================================================== //
// DATE PICKER
// ================================================== //
let DatePicker = function(PRIMARY_COLOR="#00897b") {
/* Lookup array for days of week */
let weekday = new Array(7);
weekday[0] = "Sunday";
weekday[1] = "Monday";
weekday[2] = "Tuesday";
weekday[3] = "Wednesday";
weekday[4] = "Thursday";
weekday[5] = "Friday";
weekday[6] = "Saturday";
/* Lookup array for months */
let month = new Array(12);
month[0] = "January";
month[1] = "February";
month[2] = "March";
month[3] = "April";
month[4] = "May";
month[5] = "June";
month[6] = "July";
month[7] = "August";
month[8] = "September";
month[9] = "October";
month[10] = "November";
month[11] = "December";
/* Flag set to true when date picker buttons are hidden */
let DP_NO_BUTTONS = false;
/**
* Display the Date Picker
* @param {Date} date Initial Date
* @param {function} callback Selected Date callback
* @param {Date} callback.date Selected Date
*/
function show(date, callback) {
_setupDatePicker(date, callback);
$("#date-picker").animate({
bottom: "20px",
}, 500);
}
/**
* Hide the Date Picker
*/
function hide() {
$("#date-picker").animate({
bottom: "-900px",
}, 500);
}
/**
* Set Up and Display the Date Picker
* @param {Date} selected Selected Date
* @param {function} callback Selected Date callback(date)
* @private
*/
function _setupDatePicker(selected, callback) {
// Set Header Color
$("#date-picker-dow").css("background-color", PRIMARY_COLOR);
$("#date-picker-month").css("background-color", PRIMARY_COLOR);
$("#date-picker-day").css("background-color", PRIMARY_COLOR);
$("#date-picker-year").css("background-color", PRIMARY_COLOR);
// Set Header Values
$("#date-picker-dow").html("<p>" + weekday[selected.getDay()] + "</p>");
$("#date-picker-month").html("<p>" + month[selected.getMonth()].substring(0, 3) + "</p>");
$("#date-picker-day").html("<p>" + selected.getDate() + "</p>");
$("#date-picker-year").html("<p>" + selected.getFullYear() + "</p>");
// Hide Header on small screens
if ( $(window).height() < 600 ) {
$("#date-picker-header").hide();
}
else {
$("#date-picker-header").show();
}
// Hide Button row on even smaller screens
if ( $(window).height() < 400 ) {
DP_NO_BUTTONS = true;
$("#date-picker-buttons").hide();
}
else {
DP_NO_BUTTONS = false;
$("#date-picker-buttons").show();
}
// Set Calendar Month
$("#date-picker-cal-month-label").html(month[selected.getMonth()] + " " + selected.getFullYear());
// Get the first and last days of the current month
let firstDay = new Date(selected.getFullYear(), selected.getMonth(), 1);
let lastDay = new Date(selected.getFullYear(), selected.getMonth() + 1, 0);
// Get the first day of the week and the max number of days
let firstDOW = firstDay.getDay();
let maxDays = lastDay.getDate();
// BUILD CALENDAR HTML
let html = "";
let selectedDate = selected.getDate();
// Generate First Week
html += "<tr>";
for ( let i = 0; i < firstDOW; i++ ) {
html += "<td></td>";
}
for ( let i = 1; i <= (7 - firstDOW); i++ ) {
let selected = "";
if ( i === selectedDate ) {
selected = "selected";
}
html += "<td class='enabled-date " + selected + "'>" + i + "</td>";
}
html += "</tr>";
// Generate the remaining weeks
let next = 7 - firstDOW + 1;
let counter = 0;
for ( let i = next; i <= maxDays; i++ ) {
if ( counter % 7 === 0 ) {
html += "<tr>";
}
let selected = "";
if ( i === selectedDate ) {
selected = "selected";
}
html += "<td class='enabled-date " + selected + "'>" + i + "</td>";
if ( counter % 7 === 6 ) {
html += "</tr>";
}
counter++;
}
// Add empty cells in last week
let x = counter % 7;
if ( x > 0 ) {
for ( let i = x; i < 7; i++ ) {
html += "<td></td>";
if ( i === 6 ) {
html += "</tr>";
}
}
}
// Add HTML to tbody
$("#date-picker-cal tbody").html(html);
// Add td css
$("td.enabled-date").mouseover(function() {
$(this).not("td.selected").css("color", PRIMARY_COLOR);
$(this).not("td.selected").css("font-weight", "bold");
});
$("td.enabled-date").mouseout(function() {
$(this).not("td.selected").css("color", "#000000");
$(this).not("td.selected").css("font-weight", "normal");
});
$("td.selected").css("background-color", PRIMARY_COLOR).css("color", "#ffffff");
// Set Button Text Color
$("#date-picker-reset-button").css("color", PRIMARY_COLOR);
$("#date-picker-cancel-button").css("color", PRIMARY_COLOR);
$("#date-picker-ok-button").css("color", PRIMARY_COLOR);
// ADD CLICK LISTENERS
$("#date-picker-cal-month-prev").off('click').on('click', function () {
let expected = new Date(selected);
expected.setDate(1);
expected.setMonth(expected.getMonth() - 1);
selected.setMonth(selected.getMonth() - 1);
if ( selected.getMonth() > expected.getMonth() ) {
selected.setDate(0);
}
_setupDatePicker(selected, callback);
});
$("#date-picker-cal-month-next").off('click').on('click', function () {
let expected = new Date(selected);
expected.setDate(1);
expected.setMonth(expected.getMonth() + 1);
selected.setMonth(selected.getMonth() + 1);
if ( selected.getMonth() > expected.getMonth() ) {
selected.setDate(0);
}
_setupDatePicker(selected, callback);
});
$("#date-picker-reset-button").off('click').on('click', function () {
_setupDatePicker(new Date(), callback);
});
$("#date-picker-cancel-button").off('click').on('click', function () {
hide();
});
$("#date-picker-ok-button").off('click').on('click', function () {
hide();
return callback(selected);
});
// Add td click listener
$("td.enabled-date").click(function () {
let date = $(this).html();
selected.setDate(date);
if ( DP_NO_BUTTONS === true ) {
hide();
return callback(selected);
}
else {
_setupDatePicker(selected, callback);
}
});
}
// DatePicker return show and hide functions
return {
show: show,
hide: hide
}
};