bavbavhaus.net/pandoc/s5/default/slides.js

554 lines
16 KiB
JavaScript

// S5 v1.1 slides.js -- released into the Public Domain
//
// Please see http://www.meyerweb.com/eric/tools/s5/credits.html for information
// about all the wonderful and talented contributors to this code!
var undef;
var slideCSS = '';
var snum = 0;
var smax = 1;
var incpos = 0;
var number = undef;
var s5mode = true;
var defaultView = 'slideshow';
var controlVis = 'visible';
var isIE = navigator.appName == 'Microsoft Internet Explorer' && navigator.userAgent.indexOf('Opera') < 1 ? 1 : 0;
var isOp = navigator.userAgent.indexOf('Opera') > -1 ? 1 : 0;
var isGe = navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('Safari') < 1 ? 1 : 0;
function hasClass(object, className) {
if (!object.className) return false;
return (object.className.search('(^|\\s)' + className + '(\\s|$)') != -1);
}
function hasValue(object, value) {
if (!object) return false;
return (object.search('(^|\\s)' + value + '(\\s|$)') != -1);
}
function removeClass(object,className) {
if (!object) return;
object.className = object.className.replace(new RegExp('(^|\\s)'+className+'(\\s|$)'), RegExp.$1+RegExp.$2);
}
function addClass(object,className) {
if (!object || hasClass(object, className)) return;
if (object.className) {
object.className += ' '+className;
} else {
object.className = className;
}
}
function GetElementsWithClassName(elementName,className) {
var allElements = document.getElementsByTagName(elementName);
var elemColl = new Array();
for (var i = 0; i< allElements.length; i++) {
if (hasClass(allElements[i], className)) {
elemColl[elemColl.length] = allElements[i];
}
}
return elemColl;
}
function isParentOrSelf(element, id) {
if (element == null || element.nodeName=='BODY') return false;
else if (element.id == id) return true;
else return isParentOrSelf(element.parentNode, id);
}
function nodeValue(node) {
var result = "";
if (node.nodeType == 1) {
var children = node.childNodes;
for (var i = 0; i < children.length; ++i) {
result += nodeValue(children[i]);
}
}
else if (node.nodeType == 3) {
result = node.nodeValue;
}
return(result);
}
function slideLabel() {
var slideColl = GetElementsWithClassName('*','slide');
var list = document.getElementById('jumplist');
smax = slideColl.length;
for (var n = 0; n < smax; n++) {
var obj = slideColl[n];
var did = 'slide' + n.toString();
obj.setAttribute('id',did);
if (isOp) continue;
var otext = '';
var menu = obj.firstChild;
if (!menu) continue; // to cope with empty slides
while (menu && menu.nodeType == 3) {
menu = menu.nextSibling;
}
if (!menu) continue; // to cope with slides with only text nodes
var menunodes = menu.childNodes;
for (var o = 0; o < menunodes.length; o++) {
otext += nodeValue(menunodes[o]);
}
list.options[list.length] = new Option(n + ': ' + otext, n);
}
}
function currentSlide() {
var cs;
if (document.getElementById) {
cs = document.getElementById('currentSlide');
} else {
cs = document.currentSlide;
}
cs.innerHTML = '<span id="csHere">' + snum + '<\/span> ' +
'<span id="csSep">\/<\/span> ' +
'<span id="csTotal">' + (smax-1) + '<\/span>';
// if (snum == 0) {
// cs.style.visibility = 'hidden';
// } else {
// cs.style.visibility = 'visible';
// }
}
function go(step) {
if (document.getElementById('slideProj').disabled || step == 0) return;
var jl = document.getElementById('jumplist');
var cid = 'slide' + snum;
var ce = document.getElementById(cid);
if (incrementals[snum].length > 0) {
for (var i = 0; i < incrementals[snum].length; i++) {
removeClass(incrementals[snum][i], 'current');
removeClass(incrementals[snum][i], 'incremental');
}
}
if (step != 'j') {
snum += step;
lmax = smax - 1;
if (snum > lmax) snum = lmax;
if (snum < 0) snum = 0;
} else
snum = parseInt(jl.value);
var nid = 'slide' + snum;
var ne = document.getElementById(nid);
if (!ne) {
ne = document.getElementById('slide0');
snum = 0;
}
if (step < 0) {incpos = incrementals[snum].length} else {incpos = 0;}
if (incrementals[snum].length > 0 && incpos == 0) {
for (var i = 0; i < incrementals[snum].length; i++) {
if (hasClass(incrementals[snum][i], 'current'))
incpos = i + 1;
else
addClass(incrementals[snum][i], 'incremental');
}
}
if (incrementals[snum].length > 0 && incpos > 0)
addClass(incrementals[snum][incpos - 1], 'current');
ce.style.visibility = 'hidden';
ne.style.visibility = 'visible';
jl.selectedIndex = snum;
currentSlide();
number = 0;
}
function goTo(target) {
if (target >= smax || target == snum) return;
go(target - snum);
}
function subgo(step) {
if (step > 0) {
removeClass(incrementals[snum][incpos - 1],'current');
removeClass(incrementals[snum][incpos], 'incremental');
addClass(incrementals[snum][incpos],'current');
incpos++;
} else {
incpos--;
removeClass(incrementals[snum][incpos],'current');
addClass(incrementals[snum][incpos], 'incremental');
addClass(incrementals[snum][incpos - 1],'current');
}
}
function toggle() {
var slideColl = GetElementsWithClassName('*','slide');
var slides = document.getElementById('slideProj');
var outline = document.getElementById('outlineStyle');
if (!slides.disabled) {
slides.disabled = true;
outline.disabled = false;
s5mode = false;
fontSize('1em');
for (var n = 0; n < smax; n++) {
var slide = slideColl[n];
slide.style.visibility = 'visible';
}
} else {
slides.disabled = false;
outline.disabled = true;
s5mode = true;
fontScale();
for (var n = 0; n < smax; n++) {
var slide = slideColl[n];
slide.style.visibility = 'hidden';
}
slideColl[snum].style.visibility = 'visible';
}
}
function showHide(action) {
var obj = GetElementsWithClassName('*','hideme')[0];
switch (action) {
case 's': obj.style.visibility = 'visible'; break;
case 'h': obj.style.visibility = 'hidden'; break;
case 'k':
if (obj.style.visibility != 'visible') {
obj.style.visibility = 'visible';
} else {
obj.style.visibility = 'hidden';
}
break;
}
}
// 'keys' code adapted from MozPoint (http://mozpoint.mozdev.org/)
function keys(key) {
if (!key) {
key = event;
key.which = key.keyCode;
}
if (key.which == 84) {
toggle();
return;
}
if (s5mode) {
switch (key.which) {
case 10: // return
case 13: // enter
if (window.event && isParentOrSelf(window.event.srcElement, 'controls')) return;
if (key.target && isParentOrSelf(key.target, 'controls')) return;
if(number != undef) {
goTo(number);
break;
}
case 32: // spacebar
case 34: // page down
case 39: // rightkey
case 40: // downkey
if(number != undef) {
go(number);
} else if (!incrementals[snum] || incpos >= incrementals[snum].length) {
go(1);
} else {
subgo(1);
}
break;
case 33: // page up
case 37: // leftkey
case 38: // upkey
if(number != undef) {
go(-1 * number);
} else if (!incrementals[snum] || incpos <= 0) {
go(-1);
} else {
subgo(-1);
}
break;
case 36: // home
goTo(0);
break;
case 35: // end
goTo(smax-1);
break;
case 67: // c
showHide('k');
break;
}
if (key.which < 48 || key.which > 57) {
number = undef;
} else {
if (window.event && isParentOrSelf(window.event.srcElement, 'controls')) return;
if (key.target && isParentOrSelf(key.target, 'controls')) return;
number = (((number != undef) ? number : 0) * 10) + (key.which - 48);
}
}
return false;
}
function clicker(e) {
number = undef;
var target;
if (window.event) {
target = window.event.srcElement;
e = window.event;
} else target = e.target;
if (target.getAttribute('href') != null || target.getAttribute("onclick") != null || target.getAttribute("onchange") != null || hasValue(target.rel, 'external') || isParentOrSelf(target, 'controls') || isParentOrSelf(target,'embed') || isParentOrSelf(target,'object') || isParentOrSelf(target, "jumplist")) return true;
if (!e.which || e.which == 1) {
if (!incrementals[snum] || incpos >= incrementals[snum].length) {
go(1);
} else {
subgo(1);
}
}
}
function findSlide(hash) {
var target = null;
var slides = GetElementsWithClassName('*','slide');
for (var i = 0; i < slides.length; i++) {
var targetSlide = slides[i];
if ( (targetSlide.name && targetSlide.name == hash)
|| (targetSlide.id && targetSlide.id == hash) ) {
target = targetSlide;
break;
}
}
while(target != null && target.nodeName != 'BODY') {
if (hasClass(target, 'slide')) {
return parseInt(target.id.slice(5));
}
target = target.parentNode;
}
return null;
}
function slideJump() {
if (window.location.hash == null) return;
var sregex = /^#slide(\d+)$/;
var matches = sregex.exec(window.location.hash);
var dest = null;
if (matches != null) {
dest = parseInt(matches[1]);
} else {
dest = findSlide(window.location.hash.slice(1));
}
if (dest != null)
go(dest - snum);
}
function fixLinks() {
var thisUri = window.location.href;
thisUri = thisUri.slice(0, thisUri.length - window.location.hash.length);
var aelements = document.getElementsByTagName('A');
for (var i = 0; i < aelements.length; i++) {
var a = aelements[i].href;
var slideID = a.match('\#slide[0-9]{1,2}');
if ((slideID) && (slideID[0].slice(0,1) == '#')) {
var dest = findSlide(slideID[0].slice(1));
if (dest != null) {
if (aelements[i].addEventListener) {
aelements[i].addEventListener("click", new Function("e",
"if (document.getElementById('slideProj').disabled) return;" +
"go("+dest+" - snum); " +
"if (e.preventDefault) e.preventDefault();"), true);
} else if (aelements[i].attachEvent) {
aelements[i].attachEvent("onclick", new Function("",
"if (document.getElementById('slideProj').disabled) return;" +
"go("+dest+" - snum); " +
"event.returnValue = false;"));
}
}
}
}
}
function externalLinks() {
if (!document.getElementsByTagName) return;
var anchors = document.getElementsByTagName('a');
for (var i=0; i<anchors.length; i++) {
var anchor = anchors[i];
if (anchor.getAttribute('href') && hasValue(anchor.rel, 'external')) {
anchor.target = '_blank';
addClass(anchor,'external');
}
}
}
function createControls() {
var controlsDiv = document.getElementById("controls");
if (!controlsDiv) return;
var hider = ' onmouseover="showHide(\'s\');" onmouseout="showHide(\'h\');"';
var hideDiv = '', hideList = '';
if (controlVis == 'hidden') {
hideDiv = hider;
} else {
hideList = hider;
}
controlsDiv.innerHTML = '<form action="#" id="controlForm"' + hideDiv + '>' +
'<div id="navLinks">' +
'<a accesskey="t" id="toggle" href="javascript:toggle();">&#216;<\/a>' +
'<a accesskey="z" id="prev" href="javascript:go(-1);">&#xab;<\/a>' +
'<a accesskey="x" id="next" href="javascript:go(1);">&#xbb;<\/a>' +
'<div id="navList"' + hideList + '><select id="jumplistx" onchange="go(\'j\');"><\/select><\/div>' +
'<\/div><\/form>';
if (controlVis == 'hidden') {
var hidden = document.getElementById('navLinks');
} else {
var hidden = document.getElementById('jumplist');
}
addClass(hidden,'hideme');
}
function fontScale() { // causes layout problems in FireFox that get fixed if browser's Reload is used; same may be true of other Gecko-based browsers
if (!s5mode) return false;
var vScale = 22; // both yield 32 (after rounding) at 1024x768
var hScale = 32; // perhaps should auto-calculate based on theme's declared value?
if (window.innerHeight) {
var vSize = window.innerHeight;
var hSize = window.innerWidth;
} else if (document.documentElement.clientHeight) {
var vSize = document.documentElement.clientHeight;
var hSize = document.documentElement.clientWidth;
} else if (document.body.clientHeight) {
var vSize = document.body.clientHeight;
var hSize = document.body.clientWidth;
} else {
var vSize = 700; // assuming 1024x768, minus chrome and such
var hSize = 1024; // these do not account for kiosk mode or Opera Show
}
var newSize = Math.min(Math.round(vSize/vScale),Math.round(hSize/hScale));
fontSize(newSize + 'px');
if (isGe) { // hack to counter incremental reflow bugs
var obj = document.getElementsByTagName('body')[0];
obj.style.display = 'none';
obj.style.display = 'block';
}
}
function fontSize(value) {
// if (!(s5ss = document.getElementById('s5ss'))) {
// if (!isIE) {
// document.getElementsByTagName('head')[0].appendChild(s5ss = document.createElement('style'));
// s5ss.setAttribute('media','screen, projection');
// s5ss.setAttribute('id','s5ss');
// } else {
// document.createStyleSheet();
// document.s5ss = document.styleSheets[document.styleSheets.length - 1];
// }
// }
// if (!isIE) {
// while (s5ss.lastChild) s5ss.removeChild(s5ss.lastChild);
// s5ss.appendChild(document.createTextNode('body {font-size: ' + value + ' !important;}'));
// } else {
// document.s5ss.addRule('body','font-size: ' + value + ' !important;');
// }
}
function notOperaFix() {
slideCSS = document.getElementById('slideProj').href;
var slides = document.getElementById('slideProj');
var outline = document.getElementById('outlineStyle');
slides.setAttribute('media','screen');
outline.disabled = true;
if (isGe) {
slides.setAttribute('href','null'); // Gecko fix
slides.setAttribute('href',slideCSS); // Gecko fix
}
if (isIE && document.styleSheets && document.styleSheets[0]) {
document.styleSheets[0].addRule('img', 'behavior: url(ui/default/iepngfix.htc)');
document.styleSheets[0].addRule('div', 'behavior: url(ui/default/iepngfix.htc)');
document.styleSheets[0].addRule('.slide', 'behavior: url(ui/default/iepngfix.htc)');
}
}
function getIncrementals(obj) {
var incrementals = new Array();
if (!obj)
return incrementals;
var children = obj.childNodes;
for (var i = 0; i < children.length; i++) {
var child = children[i];
if (hasClass(child, 'incremental')) {
if (child.nodeName == 'OL' || child.nodeName == 'UL') {
removeClass(child, 'incremental');
for (var j = 0; j < child.childNodes.length; j++) {
if (child.childNodes[j].nodeType == 1) {
addClass(child.childNodes[j], 'incremental');
}
}
} else {
incrementals[incrementals.length] = child;
removeClass(child,'incremental');
}
}
if (hasClass(child, 'show-first')) {
if (child.nodeName == 'OL' || child.nodeName == 'UL') {
removeClass(child, 'show-first');
if (child.childNodes[isGe].nodeType == 1) {
removeClass(child.childNodes[isGe], 'incremental');
}
} else {
incrementals[incrementals.length] = child;
}
}
incrementals = incrementals.concat(getIncrementals(child));
}
return incrementals;
}
function createIncrementals() {
var incrementals = new Array();
for (var i = 0; i < smax; i++) {
incrementals[i] = getIncrementals(document.getElementById('slide'+i));
}
return incrementals;
}
function defaultCheck() {
var allMetas = document.getElementsByTagName('meta');
for (var i = 0; i< allMetas.length; i++) {
if (allMetas[i].name == 'defaultView') {
defaultView = allMetas[i].content;
}
if (allMetas[i].name == 'controlVis') {
controlVis = allMetas[i].content;
}
}
}
// Key trap fix, new function body for trap()
function trap(e) {
if (!e) {
e = event;
e.which = e.keyCode;
}
try {
modifierKey = e.ctrlKey || e.altKey || e.metaKey;
}
catch(e) {
modifierKey = false;
}
return modifierKey || e.which == 0;
}
function startup() {
defaultCheck();
createControls();
slideLabel();
fixLinks();
externalLinks();
// fontScale();
if (!isOp) {
notOperaFix();
incrementals = createIncrementals();
slideJump();
if (defaultView == 'outline') {
toggle();
}
document.onkeyup = keys;
document.onkeypress = trap;
document.onclick = clicker;
}
currentSlide();
}
window.onload = startup;
// window.onresize = function(){setTimeout('fontScale()', 50);}