diff options
Diffstat (limited to 'static/admin/js/calendar.js')
| -rw-r--r-- | static/admin/js/calendar.js | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/static/admin/js/calendar.js b/static/admin/js/calendar.js new file mode 100644 index 0000000..5765560 --- /dev/null +++ b/static/admin/js/calendar.js @@ -0,0 +1,208 @@ +/*global gettext, pgettext, get_format, quickElement, removeChildren, addEvent*/ +/* +calendar.js - Calendar functions by Adrian Holovaty +depends on core.js for utility functions like removeChildren or quickElement +*/ + +(function() { + 'use strict'; + // CalendarNamespace -- Provides a collection of HTML calendar-related helper functions + var CalendarNamespace = { + monthsOfYear: [ + gettext('January'), + gettext('February'), + gettext('March'), + gettext('April'), + gettext('May'), + gettext('June'), + gettext('July'), + gettext('August'), + gettext('September'), + gettext('October'), + gettext('November'), + gettext('December') + ], + daysOfWeek: [ + pgettext('one letter Sunday', 'S'), + pgettext('one letter Monday', 'M'), + pgettext('one letter Tuesday', 'T'), + pgettext('one letter Wednesday', 'W'), + pgettext('one letter Thursday', 'T'), + pgettext('one letter Friday', 'F'), + pgettext('one letter Saturday', 'S') + ], + firstDayOfWeek: parseInt(get_format('FIRST_DAY_OF_WEEK')), + isLeapYear: function(year) { + return (((year % 4) === 0) && ((year % 100) !== 0 ) || ((year % 400) === 0)); + }, + getDaysInMonth: function(month, year) { + var days; + if (month === 1 || month === 3 || month === 5 || month === 7 || month === 8 || month === 10 || month === 12) { + days = 31; + } + else if (month === 4 || month === 6 || month === 9 || month === 11) { + days = 30; + } + else if (month === 2 && CalendarNamespace.isLeapYear(year)) { + days = 29; + } + else { + days = 28; + } + return days; + }, + draw: function(month, year, div_id, callback, selected) { // month = 1-12, year = 1-9999 + var today = new Date(); + var todayDay = today.getDate(); + var todayMonth = today.getMonth() + 1; + var todayYear = today.getFullYear(); + var todayClass = ''; + + // Use UTC functions here because the date field does not contain time + // and using the UTC function variants prevent the local time offset + // from altering the date, specifically the day field. For example: + // + // ``` + // var x = new Date('2013-10-02'); + // var day = x.getDate(); + // ``` + // + // The day variable above will be 1 instead of 2 in, say, US Pacific time + // zone. + var isSelectedMonth = false; + if (typeof selected !== 'undefined') { + isSelectedMonth = (selected.getUTCFullYear() === year && (selected.getUTCMonth() + 1) === month); + } + + month = parseInt(month); + year = parseInt(year); + var calDiv = document.getElementById(div_id); + removeChildren(calDiv); + var calTable = document.createElement('table'); + quickElement('caption', calTable, CalendarNamespace.monthsOfYear[month - 1] + ' ' + year); + var tableBody = quickElement('tbody', calTable); + + // Draw days-of-week header + var tableRow = quickElement('tr', tableBody); + for (var i = 0; i < 7; i++) { + quickElement('th', tableRow, CalendarNamespace.daysOfWeek[(i + CalendarNamespace.firstDayOfWeek) % 7]); + } + + var startingPos = new Date(year, month - 1, 1 - CalendarNamespace.firstDayOfWeek).getDay(); + var days = CalendarNamespace.getDaysInMonth(month, year); + + var nonDayCell; + + // Draw blanks before first of month + tableRow = quickElement('tr', tableBody); + for (i = 0; i < startingPos; i++) { + nonDayCell = quickElement('td', tableRow, ' '); + nonDayCell.className = "nonday"; + } + + function calendarMonth(y, m) { + function onClick(e) { + e.preventDefault(); + callback(y, m, django.jQuery(this).text()); + } + return onClick; + } + + // Draw days of month + var currentDay = 1; + for (i = startingPos; currentDay <= days; i++) { + if (i % 7 === 0 && currentDay !== 1) { + tableRow = quickElement('tr', tableBody); + } + if ((currentDay === todayDay) && (month === todayMonth) && (year === todayYear)) { + todayClass = 'today'; + } else { + todayClass = ''; + } + + // use UTC function; see above for explanation. + if (isSelectedMonth && currentDay === selected.getUTCDate()) { + if (todayClass !== '') { + todayClass += " "; + } + todayClass += "selected"; + } + + var cell = quickElement('td', tableRow, '', 'class', todayClass); + var link = quickElement('a', cell, currentDay, 'href', '#'); + addEvent(link, 'click', calendarMonth(year, month)); + currentDay++; + } + + // Draw blanks after end of month (optional, but makes for valid code) + while (tableRow.childNodes.length < 7) { + nonDayCell = quickElement('td', tableRow, ' '); + nonDayCell.className = "nonday"; + } + + calDiv.appendChild(calTable); + } + }; + + // Calendar -- A calendar instance + function Calendar(div_id, callback, selected) { + // div_id (string) is the ID of the element in which the calendar will + // be displayed + // callback (string) is the name of a JavaScript function that will be + // called with the parameters (year, month, day) when a day in the + // calendar is clicked + this.div_id = div_id; + this.callback = callback; + this.today = new Date(); + this.currentMonth = this.today.getMonth() + 1; + this.currentYear = this.today.getFullYear(); + if (typeof selected !== 'undefined') { + this.selected = selected; + } + } + Calendar.prototype = { + drawCurrent: function() { + CalendarNamespace.draw(this.currentMonth, this.currentYear, this.div_id, this.callback, this.selected); + }, + drawDate: function(month, year, selected) { + this.currentMonth = month; + this.currentYear = year; + + if(selected) { + this.selected = selected; + } + + this.drawCurrent(); + }, + drawPreviousMonth: function() { + if (this.currentMonth === 1) { + this.currentMonth = 12; + this.currentYear--; + } + else { + this.currentMonth--; + } + this.drawCurrent(); + }, + drawNextMonth: function() { + if (this.currentMonth === 12) { + this.currentMonth = 1; + this.currentYear++; + } + else { + this.currentMonth++; + } + this.drawCurrent(); + }, + drawPreviousYear: function() { + this.currentYear--; + this.drawCurrent(); + }, + drawNextYear: function() { + this.currentYear++; + this.drawCurrent(); + } + }; + window.Calendar = Calendar; + window.CalendarNamespace = CalendarNamespace; +})(); |