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calendar.html
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calendar.html
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<!doctype html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
<link rel="stylesheet" type="text/css" href="style2.css">
<title>Kalender</title>
<script type="text/javascript" src="page.js"></script>
<style type="text/css">
div.linebreak {
width: 100%;
}
div.year {
box-sizing: border-box;
width: 100%;
text-align: center;
font-size: 200%;
font-weight: bold;
border: 1px solid;
border-radius: 1em;
padding: 0em;
margin: 0.2em;
}
div.hcontainer > div.month {
-webkit-flex: 0 1 auto;
flex: 0 1 auto;
padding: 0.2em;
}
table.month {
border-collapse: collapse;
}
table.month td {
padding: 0.2em;
border: none;
}
table.month tr:first-child td {
border-top-left-radius: 1em;
border-top-right-radius: 1em;
padding-top: 0.4em;
font-weight: bold;
}
tr {
text-align: center; vertical-align: top;
}
td[onclick] {
cursor: pointer;
}
div.info {
text-align: left; padding: 2px; position:relative;
}
.frame {
background-color: #BBDDFF;
}
@keyframes blink {
0% { opacity: 0; }
33% { opacity: 1; }
67% { opacity: 1; }
100% { opacity: 0; }
}
@-webkit-keyframes blink {
0% { opacity: 0; }
33% { opacity: 1; }
67% { opacity: 1; }
100% { opacity: 0; }
}
.today {
background-color: #EEEE00;
border-radius: 0.5em;
-webkit-animation: blink 1s infinite;
animation: blink 1s infinite;
}
.day_style0 {
color: #000000;
text-shadow: 0px 0px 0.2em #00FF00;
}
.day_style1 {
color: #000000;
text-shadow: 0px 0px 0.2em #FF0000;
}
input {
margin: 2px 0px 2px 0px;
text-align: center;
vertical-align: middle;
}
button span.upptr {
display: block;
position: relative;
width: 0px; height: 0px;
margin: 0px;
border-top: 0px;
border-right: 5px solid transparent;
border-bottom: 10px solid #553300;
border-left: 5px solid transparent;
font-size: 0px;
line-height: 0px;
}
button span.downptr {
display: block;
position: relative;
width: 0px; height: 0px;
margin: 0px;
border-top: 10px solid #553300;
border-right: 5px solid transparent;
border-bottom: 0px;
border-left: 5px solid transparent;
font-size: 0px;
line-height: 0px;
}
button span.leftptr {
float: left;
display: block;
position: relative;
width: 0px; height: 0px;
margin: 3px 0px;
border-top: 5px solid transparent;
border-right: 10px solid #553300;
border-bottom: 5px solid transparent;
border-left: 0px;
font-size: 0px;
line-height: 0px;
}
button span.rightptr {
float: left;
display: block;
position: relative;
width: 0px; height: 0px;
margin: 3px;
border-top: 5px solid transparent;
border-right: 0px;
border-bottom: 5px solid transparent;
border-left: 10px solid #553300;
font-size: 0px;
line-height: 0px;
}
</style>
<script type="text/javascript">
"use strict";
var start_year;
var quarter;
var special_dates;
var this_year;
var this_month; // 0-based month
var this_day;
var range_from_date = undefined;
var range_to_date;
var range_day_count;
var from_year;
var to_year;
var showingall = false;
var showing_exceptions = {};
var weekstr = "Uge";
var weekdays = new Array("M","T","O","T","F","L","S");
var months = new Array("jan","feb","mar","apr","maj","jun","jul","aug","sep","okt","nov","dec");
var todaystr = "i dag";
var showallstr = "Vis<br>særlige<br>dage";
var hideallstr = "Skjul<br>særlige<br>dage";
var goherestr = "<span class='leftptr'><\/span>";
var gocurryearstr = "<span class='rightptr'><\/span>i år";
var gotodaystr = "<span class='rightptr'><\/span>i dag";
// Hack to get around javascript's weird % behavior (x%y takes the sign of x rather than y)
function mod(x, y)
{
return (x % y + y) % y;
}
function to_date_str(y, m, d, with_hyphen)
{
var ystr = (10000 + y).toString().substring(1);
var mstr = (100 + m).toString().substring(1);
var dstr = (100 + d).toString().substring(1);
if (with_hyphen) {
return ystr + "-" + mstr + "-" + dstr;
} else {
return ystr + mstr + dstr;
}
}
function show_day_content(action)
{
var x,n,date_str,showit;
switch (action) {
case 0: // Show specified days
date_str = arguments[1];
x = document.getElementById("info" + date_str);
if (x) {
x = x.style;
showit = showingall;
if (showing_exceptions[date_str])
delete showing_exceptions[date_str];
else {
showing_exceptions[date_str] = 1;
showit = !showit;
}
if (showit) {
x.display = "block";
} else {
x.display = "none";
}
}
document.getElementById("range_from").value = document.getElementById("range_to").value;
document.getElementById("range_to").value =
date_str.slice(0, 4) + '-' + date_str.slice(4, 6) + '-' + date_str.slice(6);
calc_range();
break;
case 1: // Show all days
for (n = 0; n < special_dates.length; n++) {
document.getElementById("info" + special_dates[n]).style.display = "block";
}
showingall = true;
showing_exceptions = {};
break;
case 2: // Hide all days
for (n = 0; n < special_dates.length; n++) {
document.getElementById("info" + special_dates[n]).style.display = "none";
}
showingall = false;
showing_exceptions = {};
break;
}
}
function change_year()
{
var inputyear = document.getElementById("yr").value;
if (inputyear != start_year || quarter != 0)
make_cal(inputyear, 0);
document.getElementById("yr").select();
}
function goto_from_year()
{
if (from_year != undefined)
make_cal(from_year.year, 0);
document.getElementById("range_from").select();
}
function goto_to_year()
{
if (to_year != undefined)
make_cal(to_year.year, 0);
document.getElementById("range_to").select();
}
function change_year_if_enter(e) {
if (window.event)
e = window.event;
if (e.key == 'Enter') {
change_year();
return false;
} else {
return true;
}
}
function update_quarter(delta_q)
{
make_cal(start_year, quarter + delta_q);
}
function calc_range()
{
var error = false;
var from_y, from_m, from_d, to_y, to_m, to_d, ar;
var n_days = 0;
range_from_date = document.getElementById("range_from").value;
range_to_date = document.getElementById("range_to").value;
error = error || !(ar = range_from_date.match(/^(\d\d\d\d)-(\d\d)-(\d\d)$/)) || ar.length != 4 ||
isNaN(from_y = 1*ar[1]) || isNaN(from_m = 1*ar[2]) || isNaN(from_d = 1*ar[3]) ||
from_y > 9999 || from_m < 1 || from_m > 12 || from_d < 1 ||
(from_year = new Year(from_y), from_d > from_year.daysinmonth[from_m-1]);
error = error || !(ar = range_to_date.match(/^(\d\d\d\d)-(\d\d)-(\d\d)$/)) || ar.length != 4 ||
isNaN(to_y = 1*ar[1]) || isNaN(to_m = 1*ar[2]) || isNaN(to_d = 1*ar[3]) ||
to_y > 9999 || to_m < 1 || to_m > 12 || to_d < 1 ||
(to_year = new Year(to_y), to_d > to_year.daysinmonth[to_m-1]);
if (error) {
range_day_count = "Fejl i dato";
from_year = undefined;
to_year = undefined;
} else {
n_days = to_d + to_year.daysum[to_m-1] + to_year.startsum - (from_d + from_year.daysum[from_m-1] + from_year.startsum);
range_day_count = n_days + " dag" + (Math.abs(n_days) == 1 ? "" : "e");
}
document.getElementById("range_days").innerHTML = range_day_count;
}
function calc_range_from_if_enter(e)
{
if (window.event)
e = window.event;
if (e.key == 'Enter') {
calc_range();
document.getElementById("range_from").select();
return false;
} else {
return true;
}
}
function calc_range_to_if_enter(e)
{
if (window.event)
e = window.event;
if (e.key == 'Enter') {
calc_range();
document.getElementById("range_to").select();
return false;
} else {
return true;
}
}
const SpecialDay = function(name, type, day)
{
this.name = name;
this.type = type;
this.day = day;
this.next_day = undefined;
this.prev_day = undefined;
};
const SpecialDays = function()
{
this.first_day = undefined;
this.last_day = undefined;
};
SpecialDays.prototype.add = function(special_day)
{
var d = this.first_day;
while (d && d.day <= special_day.day) d = d.next_day;
special_day.next_day = d;
if (d) {
special_day.prev_day = d.prev_day;
d.prev_day = special_day;
} else {
special_day.prev_day = this.last_day;
this.last_day = special_day;
}
if (special_day.prev_day) {
special_day.prev_day.next_day = special_day;
} else {
this.first_day = special_day;
}
};
SpecialDays.prototype.find_first = function(day)
{
var d = this.first_day;
while (d && d.day < day) d = d.next_day;
return d;
};
const Year = function(year)
{
var d;
// Save year, and number of days in each month (indexed by month-1)
this.year = year;
this.daysinmonth = [31,28 + this.is_leapyear(),31,30,31,30,31,31,30,31,30,31];
// Find sum of all days in previous months for each month (indexed by month-1)
this.daysum = new Array(13);
this.daysum[0] = 0;
for (var i = 1; i < 13; i++) {
this.daysum[i] = this.daysum[i-1] + this.daysinmonth[i-1];
}
// Find sum of all days in all previous years
const prev_year = year - 1;
this.startsum = 365 * prev_year + Math.floor(prev_year / 4) - Math.floor(prev_year / 100) + Math.floor(prev_year / 400);
// Find weekday of first day of this year
this.weekday = mod(this.startsum, 7); // 0: Monday
// Find day-of-year number of first day of week 1 (first day-of-year number is 1)
const week1_day = 1 - this.weekday + 7 * (this.weekday >= 4);
// Find week number for first day of this year
this.week = 1;
if (this.weekday >= 4) {
const prev_year_weekday = this.weekday - 1 - this.is_leapyear(prev_year);
this.week = 52 + (prev_year_weekday < 4);
}
// Find day-of-year number of Easter Sunday (first day-of-year number is 1)
const a = mod(year, 19);
const b = Math.floor(year / 100);
const c = Math.floor(b / 4);
var i = mod(b - c - Math.floor((b - Math.floor((b - 17) / 25)) / 3) + 19 * a + 15, 30);
const e = Math.floor(i / 28);
i = i - e * (1 - e * Math.floor(29 / (i + 1)) * Math.floor((21 - a) / 11));
i = i - mod(year + Math.floor(year / 4) + i + 2 - b + c, 7);
const m = 3 + Math.floor((i + 40) / 44);
d = i + 28 - 31 * Math.floor(m / 4);
const easter_day = d + this.daysum[m-1];
// Find day-of-year number of each special day (first day-of-year number is 1)
this.special_days = new SpecialDays();
this.special_days.add(new SpecialDay("Fastelavn", 0, easter_day - 49));
this.special_days.add(new SpecialDay("Palmesøndag", 1, easter_day - 7));
this.special_days.add(new SpecialDay("Skærtorsdag", 1, easter_day - 3));
this.special_days.add(new SpecialDay("Langfredag", 1, easter_day - 2));
this.special_days.add(new SpecialDay("Påskedag", 1, easter_day));
this.special_days.add(new SpecialDay("2. påskedag", 1, easter_day + 1));
this.special_days.add(new SpecialDay("Store bededag", year < 2024 ? 1 : 0, easter_day + 26));
this.special_days.add(new SpecialDay("Kristi himmelfartsdag", 1, easter_day + 39));
this.special_days.add(new SpecialDay("Bankferiedag", 0, easter_day + 40));
this.special_days.add(new SpecialDay("Pinsedag", 1, easter_day + 49));
this.special_days.add(new SpecialDay("2. pinsedag", 1, easter_day + 50));
this.special_days.add(new SpecialDay("Nytårsdag", 1, 1));
this.special_days.add(new SpecialDay("Valentinsdag", 0, 14 + this.daysum[2-1]));
this.special_days.add(new SpecialDay("Sommertid begynder", 0, (d = 31 + this.daysum[3-1], d - mod(d - week1_day + 1, 7))));
this.special_days.add(new SpecialDay("Mors dag", 0, (d = 14 + this.daysum[5-1], d - mod(d - week1_day + 1, 7))));
this.special_days.add(new SpecialDay("Arbejdernes kampdag", 0, 1 + this.daysum[5-1]));
this.special_days.add(new SpecialDay("Grundlovsdag", 1, (d = 5 + this.daysum[6-1])));
this.special_days.add(new SpecialDay("Fars dag", 0, d));
this.special_days.add(new SpecialDay("Skt. Hans aften", 0, 23 + this.daysum[6-1]));
this.special_days.add(new SpecialDay("Efterårsferie", 0, (d = week1_day + 41 * 7)));
this.special_days.add(new SpecialDay("Efterårsferie", 0, d + 1));
this.special_days.add(new SpecialDay("Efterårsferie", 0, d + 2));
this.special_days.add(new SpecialDay("Efterårsferie", 0, d + 3));
this.special_days.add(new SpecialDay("Efterårsferie", 0, d + 4));
this.special_days.add(new SpecialDay("Halloween", 0, (d = 31 + this.daysum[10-1])));
this.special_days.add(new SpecialDay("Sommertid ender", 0, d - mod(d - week1_day + 1, 7)));
this.special_days.add(new SpecialDay("Allehelgenssøndag", 0, (d = 7 + this.daysum[11-1], d - mod(d - week1_day + 1, 7))));
this.special_days.add(new SpecialDay("1. søndag i advent", 0, (d = 3 + this.daysum[12-1], d = d - mod(d - week1_day + 1, 7))));
this.special_days.add(new SpecialDay("2. søndag i advent", 0, d + 7));
this.special_days.add(new SpecialDay("3. søndag i advent", 0, d + 14));
this.special_days.add(new SpecialDay("4. søndag i advent", 0, d + 21));
this.special_days.add(new SpecialDay("Mortensaften", 0, 10 + this.daysum[11-1]));
this.special_days.add(new SpecialDay("Luciadag", 0, 13 + this.daysum[12-1]));
this.special_days.add(new SpecialDay("Juleaften", 1, 24 + this.daysum[12-1]));
this.special_days.add(new SpecialDay("Juledag", 1, 25 + this.daysum[12-1]));
this.special_days.add(new SpecialDay("2. juledag", 1, 26 + this.daysum[12-1]));
this.special_days.add(new SpecialDay("Nytårsaften", 1, 31 + this.daysum[12-1]));
// Find day-of-year number of today if year is current year, else set day-of-year number out of range (zero)
this.today = (year == this_year) && this_day + this.daysum[this_month];
};
Year.prototype.is_leapyear = function(year)
{
if (year === undefined) year = this.year;
return mod(year, 4) == 0 && (mod(year, 100) != 0 || mod(year, 400) == 0);
};
function make_cal(y, q)
{
var m,d,k,w,n,i,j,s,htmlstr;
var lastdate,next_special_day;
var date_str,day_name_str,style_str;
var week;
var weekday;
var inputyear;
var curr_year;
var scroll_to_current_month = (y == undefined);
var now = new Date();
this_year = now.getFullYear();
this_month = now.getMonth();
this_day = now.getDate();
if (range_from_date == undefined) {
range_from_date = to_date_str(this_year, this_month+1, this_day, 1);
range_to_date = to_date_str(this_year, this_month+1, this_day, 1);
}
if (document.getElementById("yr"))
inputyear = Math.round(1*document.getElementById("yr").value);
if (isNaN(inputyear) || inputyear < 0 || inputyear > 9999)
inputyear = this_year;
y = Math.round(1*y);
if (isNaN(y) || y < 0 || y > 9999) y = this_year;
q = Math.round(1*q);
if (isNaN(q)) q = this_month/3;
quarter = q & 3;
y = mod(y + Math.floor(q/4), 10000);
start_year = y;
curr_year = new Year(y);
m = quarter * 3;
d = curr_year.daysum[m];
k = 1 + d;
weekday = mod(curr_year.weekday + d, 7);
w = Math.floor((weekday + d)/7);
week = curr_year.week;
if (week > 50 && w > 0) week = 0;
week += w;
next_special_day = curr_year.special_days.find_first(k);
htmlstr = "";
htmlstr += "<button type='button' name='upup1' onclick='update_quarter(-4);'><span style='top:9px;' class='upptr'><\/span><span style='top:-9px;' class='upptr'><\/span><\/button>\n";
htmlstr += "<button type='button' name='up1' onclick='update_quarter(-1);'><span class='upptr'><\/span><\/button>\n";
htmlstr += "<button type='button' name='down1' onclick='update_quarter(1);'><span class='downptr'><\/span><\/button>\n";
htmlstr += "<button type='button' name='dndn1' onclick='update_quarter(4);'><span style='top:1px;' class='downptr'><\/span><span style='top:0px;' class='downptr'><\/span><\/button>\n";
htmlstr += "<div class='linebreak'><\/div>";
special_dates = [];
for (q = 0; q < 4; q++) {
if (m == 12) {
m = 0;
k = 1;
y = mod(y + 1, 10000);
curr_year = new Year(y);
weekday = curr_year.weekday;
week = curr_year.week;
next_special_day = curr_year.special_days.find_first(k);
}
if (m == 0) {
htmlstr += "<div class='year'>" + y + "<\/div>\n";
}
for (i = 0; i < 3; i++) {
d = 1;
lastdate = curr_year.daysinmonth[m];
var day_htmlstr = "";
htmlstr += "<div class='month' id='m" + y + "_" + m + "'><table class='month'>\n";
htmlstr += "<tr><td class='frame' colspan='8'>"
+ months[m].charAt(0).toUpperCase() + months[m].substring(1)
+ " " + y;
htmlstr += "<tr><td class='frame'>" + weekstr;
for (n = 0; n < 7; n++) {
htmlstr += "<td class='frame'>" + weekdays[n];
}
for (j = 0; j < 6; j++) {
htmlstr += "<tr><td class='frame'>";
if (d <= lastdate) {
htmlstr += (week++);
if (((m == 0) && (week > 50)) || ((m == 11) && (d > 21))) week = 1;
} else {
htmlstr += " ";
}
for (n = 0; n < 7; n++) {
if (((j > 0) || (n >= weekday)) && (d <= lastdate)) {
/* Here: y = year, m = month-1, d = day, n = weekday */
/* This is k'th day of year */
var day_names = [];
var styles = [];
date_str = to_date_str(y, m+1, d, 0);
var action = " onclick='show_day_content(0,\"" + date_str + "\");'";
if (k == curr_year.today) {
day_names.push(todaystr);
styles.push('today');
}
if (k == next_special_day.day) {
special_dates.push(date_str);
day_htmlstr += "<div class='info' id='info" + date_str + "' style='display:";
if (showingall == !showing_exceptions[date_str])
day_htmlstr += "block";
else
day_htmlstr += "none";
day_htmlstr += "'>";
var type = 0;
do {
s = next_special_day.name;
type |= next_special_day.type;
day_names.push(s);
day_htmlstr += "<span class='day_style" + next_special_day.type + "'>" + d + ": " + s + "<\/span><br>\n";
next_special_day = next_special_day.next_day;
} while (next_special_day && k == next_special_day.day);
day_htmlstr += "<\/div>\n";
styles.push("day_style" + type);
}
style_str = (styles.length > 0) ? " class='" + styles.join(" ") + "'" : "";
day_name_str = (day_names.length > 0) ?
" title='" + d + ". " + months[m] + ": " + day_names.join(" + ") + "'" :
"";
htmlstr += "<td " + style_str + day_name_str + action + ">" + d;
k++; d++;
} else {
htmlstr += "<td>";
if (d == lastdate + 1) {
weekday = n;
if (n > 0) week--;
d++;
}
}
} // n
} // j
htmlstr += "<\/table>\n";
htmlstr += day_htmlstr + "<\/div>\n";
m++;
} // i
htmlstr += "\n";
} // q
htmlstr += "<div class='linebreak'><\/div>";
htmlstr += "<button type='button' name='upup1' onclick='update_quarter(-4);'><span style='top:9px;' class='upptr'><\/span><span style='top:-9px;' class='upptr'><\/span><\/button>\n";
htmlstr += "<button type='button' name='up1' onclick='update_quarter(-1);'><span class='upptr'><\/span><\/button>\n";
htmlstr += "<button type='button' name='down1' onclick='update_quarter(1);'><span class='downptr'><\/span><\/button>\n";
htmlstr += "<button type='button' name='dndn1' onclick='update_quarter(4);'><span style='top:1px;' class='downptr'><\/span><span style='top:0px;' class='downptr'><\/span><\/button>\n";
htmlstr += "<div class='linebreak'><\/div>";
htmlstr += "<div class='hcontainer vcenter'>";
htmlstr += "<input type='text' id='yr' name='year' size=4 maxlength=4 onfocus='this.select();' onchange='change_year();'>";
htmlstr += "<button type='button' name='goto' onclick='change_year();'>" + goherestr + "<\/button>\n";
htmlstr += "<button type='button' name='go_this_year' onclick='make_cal(undefined, 0);'>" + gocurryearstr + "<\/button>\n";
htmlstr += "<button type='button' name='go_today' onclick='make_cal();'>" + gotodaystr + "<\/button>\n";
htmlstr += "<div class='linebreak'><\/div>";
htmlstr += "<button type='button' name='show_all' onclick='show_day_content(1);'>" + showallstr + "<\/button>\n";
htmlstr += "<button type='button' name='hide_all' onclick='show_day_content(2);'>" + hideallstr + "<\/button>\n";
htmlstr += "<div class='linebreak'><\/div>";
htmlstr += "Fra (inkl.):<input type='text' id='range_from' name='range_from' value='" + range_from_date + "' size=10 maxlength=10 onfocus='this.select();' onchange='calc_range();'>";
htmlstr += "<button type='button' name='goto_from' onclick='goto_from_year();'>" + goherestr + "<\/button>\n";
htmlstr += "<div class='linebreak'><\/div>";
htmlstr += "Til (ekskl.):<input type='text' id='range_to' name='range_to' value='" + range_to_date + "' size=10 maxlength=10 onfocus='this.select();' onchange='calc_range();'>";
htmlstr += "<button type='button' name='goto_to' onclick='goto_to_year();'>" + goherestr + "<\/button>\n";
htmlstr += "<div class='linebreak'><\/div>";
htmlstr += "= <span id='range_days'>" + range_day_count + "<\/span>";
htmlstr += "<div class='linebreak'><\/div>";
htmlstr += "(Sæt fra/til-datoer ved at klikke på kalenderen)";
htmlstr += "<\/div>";
document.getElementById("canvas").innerHTML = htmlstr;
document.getElementById("yr").value = inputyear;
document.getElementById("yr").onkeydown = change_year_if_enter;
document.getElementById("range_from").onkeydown = calc_range_from_if_enter;
document.getElementById("range_to").onkeydown = calc_range_to_if_enter;
if (scroll_to_current_month) {
var m_elem = document.getElementById("m" + this_year + "_" + this_month);
if (m_elem) {
var bbox = m_elem.getBoundingClientRect();
if (bbox.top < 0 || bbox.bottom > window.innerHeight) {
var new_pos = window.pageYOffset + bbox.top;
setTimeout(function(){genericPageSetup.scroll_and_hide_header(new_pos);}, 1);
}
}
}
}
function init()
{
// Handle URL arguments
const page_settings_spec = {
year: {obj: window, attr: 'start_year'},
quarter: {obj: window, attr: 'quarter'},
range_from: {obj: window, attr: 'range_from_date'},
range_to: {obj: window, attr: 'range_to_date'},
showall: {obj: window, attr: 'showingall'},
showexceptions: {
get: function() {return Object.keys(showing_exceptions).join(',')},
set: function(v) {v.split(',').forEach(function(date_str) {showing_exceptions[date_str] = 1})}
},
};
genericPageSetup.apply_settings_from_url(page_settings_spec);
make_cal(start_year, quarter || 0);
calc_range();
}
window.addEventListener('load', init, false);
</script>
</head>
<body>
<div class="hcontainer">
<h1>Kalender</h1>
<div id="canvas" class="box hcontainer">
</div>
</div>
</body>
</html>