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/**
* Horde javascript calendar widget.
*
* Custom Events:
* --------------
* Horde_Calendar:select
* params: Date object
* Fired when a date is selected.
*
* Horde_Calendar:selectMonth
* params: Date object
* Fired when a month is selected.
*
* Horde_Calendar:selectWeek
* params: Date object
* Fired when a week is selected.
*
* Horde_Calendar:selectYear
* params: Date object
* Fired when a year is selected.
*
* @copyright 2014 Horde LLC
* @license LGPL-2.1 (http://www.horde.org/licenses/lgpl21)
*/
var Horde_Calendar =
{
// Variables set externally: click_month, click_week, click_year,
// firstDayOfWeek, fullweekdays, months,
// weekdays
// Variables defaulting to null: date, month, openDate, trigger, year
open: function(trigger, data)
{
var date = data ? data : new Date();
this.openDate = date.getTime();
this.trigger = $(trigger);
this.draw(this.openDate, true);
},
/**
* Days in the month (month is a zero-indexed javascript month).
*/
daysInMonth: function(month, year)
{
switch (month) {
case 3:
case 5:
case 8:
case 10:
return 30;
case 1:
return (year % 4 === 0 && (year % 100 !== 0 || year % 400 === 0))
? 29
: 28;
default:
return 31;
}
},
weeksInMonth: function(month, year)
{
var firstWeekDays, weeks,
firstOfMonth = (new Date(year, month, 1)).getDay();
if ((this.firstDayOfWeek == 1 && firstOfMonth === 0) ||
(this.firstDayOfWeek === 0 && firstOfMonth == 6)) {
firstWeekDays = 7 - firstOfMonth + this.firstDayOfWeek;
weeks = 1;
} else {
firstWeekDays = this.firstDayOfWeek - firstOfMonth;
weeks = 0;
}
firstWeekDays %= 7;
return Math.ceil((this.daysInMonth(month, year) - firstWeekDays) / 7) + weeks;
},
// http://javascript.about.com/library/blstdweek.htm
weekOfYear: function(d)
{
var newYear = new Date(d.getFullYear(), 0, 1),
day = newYear.getDay();
if (this.firstDayOfWeek !== 0) {
day = ((day + (7 - this.firstDayOfWeek)) % 7);
}
return Math.ceil((((d - newYear) / 86400000) + day + 1) / 7);
},
draw: function(timestamp, init)
{
this.date = new Date(timestamp);
this.month = this.date.getMonth();
this.year = this.date.getFullYear();
var cell, i, i_max, p, row, startOfView, vp,
count = 1,
div = $('hordeCalendar'),
tbody = div.down('TBODY'),
// Requires init above
daysInMonth = this.daysInMonth(this.month, this.year),
daysInView = this.weeksInMonth(this.month, this.year) * 7,
firstOfMonth = (new Date(this.year, this.month, 1)).getDay(),
// Cache today and open date.
today = new Date(),
today_year = today.getFullYear(),
today_month = today.getMonth(),
today_day = today.getDate(),
open = new Date(this.openDate),
open_year = open.getFullYear(),
open_month = open.getMonth(),
open_day = open.getDate();
if (this.firstDayOfWeek === 0) {
startOfView = 1 - firstOfMonth;
} else {
// @TODO Adjust this for days other than Monday.
startOfView = (firstOfMonth === 0)
? -5
: 2 - firstOfMonth;
}
div.down('.hordeCalendarYear').update(this.year);
div.down('.hordeCalendarMonth').update(this.months[this.month]);
tbody.update('');
for (i = startOfView, i_max = startOfView + daysInView; i < i_max; ++i) {
if (count == 1) {
row = new Element('TR');
if (this.click_week) {
row.insert(new Element('TD').insert(new Element('A', { className: 'hordeCalendarWeek' }).insert(this.weekOfYear(new Date(this.year, this.month, (i < 1) ? 1 : i)))));
}
}
cell = new Element('TD');
if (i < 1 || i > daysInMonth) {
cell.addClassName('hordeCalendarEmpty');
row.insert(cell);
} else {
if (today_year == this.year &&
today_month == this.month &&
today_day == i) {
cell.writeAttribute({ className: 'hordeCalendarToday' });
}
if (open_year == this.year &&
open_month == this.month &&
open_day == i) {
cell.addClassName('hordeCalendarCurrent');
}
row.insert(cell.insert(new Element('A', { className: 'hordeCalendarDay', href: '#' }).insert(i)));
}
if (count == 7) {
tbody.insert(row);
count = 0;
}
++count;
}
if (count > 1) {
tbody.insert(row);
}
div.show();
// Position the popup every time in case of a different input,
// window sizing changes, etc.
if (init) {
p = this.trigger.cumulativeOffset();
vp = document.viewport.getDimensions();
if (p.left + div.offsetWidth > vp.width) {
div.setStyle({ left: (vp.width - 10 - div.offsetWidth) + 'px' });
} else {
div.setStyle({ left: p.left + 'px' });
}
if (p.top + div.offsetHeight > vp.height + window.pageYOffset) {
div.setStyle({ top: (window.pageYOffset + vp.height - 10 - div.offsetHeight) + 'px' });
} else {
div.setStyle({ top: p.top + 'px' });
}
}
div.setStyle({ zIndex: 999 });
},
hideCal: function()
{
$('hordeCalendar').hide();
},
changeYear: function(by)
{
this.draw((new Date(this.date.getFullYear() + by, this.date.getMonth(), 1)).getTime());
},
changeMonth: function(by)
{
var newMonth = this.date.getMonth() + by,
newYear = this.date.getFullYear();
if (newMonth == -1) {
newMonth = 11;
newYear -= 1;
}
this.draw((new Date(newYear, newMonth, 1)).getTime());
},
init: function()
{
var i, link, row, tmp,
offset = this.click_week ? 1 : 0,
thead = new Element('THEAD'),
table = new Element('TABLE', { className: 'hordeCalendarPopup', cellSpacing: 0 }).insert(thead).insert(new Element('TBODY'));
// Title bar.
link = new Element('A', { href: '#', className: 'hordeCalendarClose rightAlign' }).insert('x');
thead.insert(new Element('TR').insert(new Element('TD', { colspan: 6 + offset })).insert(new Element('TD').insert(link)));
// Year.
row = new Element('TR');
link = new Element('A', { className: 'hordeCalendarPrevYear', href: '#' }).insert('«');
row.insert(new Element('TD').insert(link));
tmp = new Element('TD', { align: 'center', colspan: 5 + offset });
if (this.click_year) {
tmp.insert(new Element('A', { className: 'hordeCalendarYear' }));
} else {
tmp.addClassName('hordeCalendarYear');
}
row.insert(tmp);
link = new Element('A', { className: 'hordeCalendarNextYear', href: '#' }).insert('»');
row.insert(new Element('TD', { className: 'rightAlign' }).insert(link));
thead.insert(row);
// Month name.
row = new Element('TR');
link = new Element('A', { className: 'hordeCalendarPrevMonth', href: '#' }).insert('«');
row.insert(new Element('TD').insert(link));
tmp = new Element('TD', { align: 'center', colspan: 5 + offset });
if (this.click_year) {
tmp.insert(new Element('A', { className: 'hordeCalendarMonth' }));
} else {
tmp.addClassName('hordeCalendarMonth');
}
row.insert(tmp);
link = new Element('A', { className: 'hordeCalendarNextMonth', href: '#' }).insert('»');
row.insert(new Element('TD', { className: 'rightAlign' }).insert(link));
thead.insert(row);
// Weekdays.
row = new Element('TR');
if (this.click_week) {
row.insert(new Element('TH'));
}
for (i = 0; i < 7; ++i) {
row.insert(new Element('TH').insert(this.weekdays[(i + this.firstDayOfWeek) % 7]));
}
thead.insert(row);
$(document.body).insert({ bottom: new Element('DIV', { id: 'hordeCalendar' }).setStyle({ position: 'absolute', 'z-index': 999 }).hide().insert(table) });
$('hordeCalendar').observe('click', this.clickHandler.bindAsEventListener(this));
},
clickHandler: function(e)
{
var elt = e.element(), day;
if (elt.hasClassName('hordeCalendarDay')) {
this.hideCal();
this.trigger.fire('Horde_Calendar:select', new Date(this.year, this.month, parseInt(elt.textContent || elt.innerText, 10)));
} else if (elt.hasClassName('hordeCalendarClose')) {
this.hideCal();
} else if (elt.hasClassName('hordeCalendarPrevYear')) {
this.changeYear(-1);
} else if (elt.hasClassName('hordeCalendarNextYear')) {
this.changeYear(1);
} else if (elt.hasClassName('hordeCalendarPrevMonth')) {
this.changeMonth(-1);
} else if (elt.hasClassName('hordeCalendarNextMonth')) {
this.changeMonth(1);
} else if (this.click_year && elt.hasClassName('hordeCalendarYear')) {
this.trigger.fire('Horde_Calendar:selectYear', new Date(this.year, this.month, 1));
this.hideCal();
} else if (this.click_month && elt.hasClassName('hordeCalendarMonth')) {
this.trigger.fire('Horde_Calendar:selectMonth', new Date(this.year, this.month, 1));
this.hideCal();
} else if (this.click_week && elt.hasClassName('hordeCalendarWeek')) {
day = elt.up('TR').down('A.hordeCalendarDay');
this.trigger.fire('Horde_Calendar:selectWeek', new Date(this.year, this.month, day.textContent || day.innerText));
this.hideCal();
}
e.stop();
}
};
document.observe('dom:loaded', Horde_Calendar.init.bind(Horde_Calendar));
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