Difference between revisions of "MediaWiki/Slideshow"
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(adds indentation to make the script more readable) |
(link to where I found the script) |
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Line 3: | Line 3: | ||
One method is to simply parse the wiki markup itself and turn that into slides by effectively walking through the structure of the page (one slide for each section, and stepping through the bullets). For this approach, a Greasemonkey script will do. | One method is to simply parse the wiki markup itself and turn that into slides by effectively walking through the structure of the page (one slide for each section, and stepping through the bullets). For this approach, a Greasemonkey script will do. | ||
− | [http://phiffer.org Dan Phiffer] | + | [http://phiffer.org Dan Phiffer] created the following Greasemonkey script (which I found courtesy of [http://www.darcynorman.net/2007/05/02/mediawiki-as-a-presentation-application/ D'Arcy Norman]) that [http://userscripts.org/scripts/show/6372 turns any MediaWiki article into a slide presentation]. The [[CSS]] was changed just a bit by Greg Rundlett to ensure compatibility with projectors. |
<source lang="javascript"> | <source lang="javascript"> | ||
// ==UserScript== | // ==UserScript== | ||
Line 12: | Line 12: | ||
var wikipedia_presentation = { | var wikipedia_presentation = { | ||
− | + | setup: function() { | |
− | + | ||
− | + | this.sections = []; | |
− | + | this.pos = 0; | |
− | + | ||
− | + | var body = document.getElementsByTagName('body')[0]; | |
− | + | this.orig_markup = body.innerHTML; | |
− | + | var markup = body.innerHTML; | |
− | + | var start = 0; | |
− | + | var end = markup.indexOf('<span class="editsection"'); | |
− | + | while (end != -1) { | |
− | + | start = markup.indexOf('</span>', end); | |
− | + | end = markup.indexOf('<span class="editsection"', start); | |
− | + | if (end == -1) { | |
− | + | end = markup.indexOf('<div class="printfooter">', start); | |
− | + | this.sections.push(markup.substr(start, end - start)); | |
− | + | end = -1; | |
− | + | } | |
− | + | this.sections.push(markup.substr(start, end - start)); | |
− | + | } | |
− | + | if (this.sections.length > 0) { | |
− | + | var div = document.getElementById('bodyContent'); | |
− | + | var link = div.insertBefore(document.createElement('a'), div.firstChild); | |
− | + | link.innerHTML = 'Start presentation'; | |
− | + | link.setAttribute('href', '#presentation'); | |
− | + | link.addEventListener('click', this.start, false); | |
− | + | } | |
− | + | }, | |
− | + | ||
− | + | start: function() { | |
− | + | var body = document.getElementsByTagName('body')[0]; | |
− | + | body.innerHTML = ''; | |
− | + | body.style.textAlign = 'center'; | |
− | + | ||
− | + | var prev = body.appendChild(document.createElement('a')); | |
− | + | prev.innerHTML = '← Prev'; | |
− | + | prev.setAttribute('href', '#prev'); | |
− | + | prev.style.font = '11px verdana, sans-serif'; | |
− | + | prev.addEventListener('click', function() { | |
− | + | wikipedia_presentation.prev(); | |
− | + | }, false); | |
− | + | ||
− | + | body.appendChild(document.createTextNode(' / ')); | |
− | + | ||
− | + | var stop = body.appendChild(document.createElement('a')); | |
− | + | stop.innerHTML = 'Exit'; | |
− | + | stop.setAttribute('href', '#exit'); | |
− | + | stop.style.font = '11px verdana, sans-serif'; | |
− | + | stop.addEventListener('click', function() { | |
− | + | wikipedia_presentation.stop(); | |
− | + | }, false); | |
− | + | ||
− | + | body.appendChild(document.createTextNode(' / ')); | |
− | + | ||
− | + | var next = body.appendChild(document.createElement('a')); | |
− | + | next.innerHTML = 'Next →'; | |
− | + | next.setAttribute('href', '#next'); | |
− | + | next.style.font = '11px verdana, sans-serif'; | |
− | + | next.addEventListener('click', function() { | |
− | + | wikipedia_presentation.next(); | |
− | + | }, false); | |
− | + | ||
− | + | var slide = body.appendChild(document.createElement('div')); | |
− | + | slide.setAttribute('id', 'wikipedia_presentation'); | |
− | + | slide.style.width = '780px'; | |
− | + | // slide.style.background = 'red'; | |
− | + | slide.style.margin = '10px 10px 10px 20px'; | |
− | + | slide.style.textAlign = 'left'; | |
− | + | slide.style.font = '2em verdana, sans-serif'; | |
− | + | ||
− | + | slide.innerHTML = wikipedia_presentation.sections[0]; | |
− | + | var items = slide.getElementsByTagName('li'); | |
− | + | for (var i = 1; i < items.length; i++) { | |
− | + | items[i].style.display = 'none'; | |
− | + | } | |
− | + | ||
− | + | document.addEventListener('keypress', wikipedia_presentation.keypress, false); | |
− | + | }, | |
− | + | ||
− | + | stop: function() { | |
− | + | var body = document.getElementsByTagName('body')[0]; | |
− | + | body.innerHTML = wikipedia_presentation.orig_markup; | |
− | + | body.style.textAlign = 'left'; | |
− | + | wikipedia_presentation.setup(); | |
− | + | document.removeEventListener('keypress', wikipedia_presentation.keypress, false); | |
− | + | }, | |
− | + | ||
− | + | keypress: function(event) { | |
− | + | if (event.keyCode == 39) { | |
− | + | wikipedia_presentation.next(); | |
− | + | } else if (event.keyCode == 37) { | |
− | + | wikipedia_presentation.prev(); | |
− | + | } | |
− | + | }, | |
− | + | ||
− | + | prev: function() { | |
− | + | this.pos--; | |
− | + | if (this.pos == -1) { | |
− | + | this.pos = this.sections.length - 1; | |
− | + | } | |
− | + | var slide = document.getElementById('wikipedia_presentation'); | |
− | + | slide.innerHTML = wikipedia_presentation.sections[this.pos]; | |
− | + | }, | |
− | + | ||
− | + | next: function() { | |
− | + | ||
− | + | var slide = document.getElementById('wikipedia_presentation'); | |
− | + | var items = slide.getElementsByTagName('li'); | |
− | + | ||
− | + | var hidden = 0; | |
− | + | for (var i = 0; i < items.length; i++) { | |
− | + | if (items[i].style.display == 'none') { | |
− | + | hidden++; | |
− | + | } | |
− | + | } | |
− | + | ||
− | + | if (hidden > 0) { | |
− | + | items[items.length - hidden].style.display = 'list-item'; | |
− | + | return; | |
− | + | } | |
− | + | ||
− | + | this.pos++; | |
− | + | if (this.pos == this.sections.length) { | |
− | + | this.pos = 0; | |
− | + | } | |
− | + | slide.innerHTML = wikipedia_presentation.sections[this.pos]; | |
− | + | var items = slide.getElementsByTagName('li'); | |
− | + | for (var i = 1; i < items.length; i++) { | |
− | + | items[i].style.display = 'none'; | |
− | + | } | |
− | + | ||
− | + | } | |
}; | }; | ||
Revision as of 00:27, 6 December 2008
If you're using MediaWiki, then you are accustomed to being able to quickly and efficiently organize your thoughts. It's a natural extension then to want to use those same "notes" in a presentation. There are many ways to achieve such a result.
One method is to simply parse the wiki markup itself and turn that into slides by effectively walking through the structure of the page (one slide for each section, and stepping through the bullets). For this approach, a Greasemonkey script will do.
Dan Phiffer created the following Greasemonkey script (which I found courtesy of D'Arcy Norman) that turns any MediaWiki article into a slide presentation. The CSS was changed just a bit by Greg Rundlett to ensure compatibility with projectors.
// ==UserScript==
// @name Wikipedia Presentation
// @namespace http://phiffer.org/
// @description Turn a Wikipedia article into a presentation
// ==/UserScript==
var wikipedia_presentation = {
setup: function() {
this.sections = [];
this.pos = 0;
var body = document.getElementsByTagName('body')[0];
this.orig_markup = body.innerHTML;
var markup = body.innerHTML;
var start = 0;
var end = markup.indexOf('<span class="editsection"');
while (end != -1) {
start = markup.indexOf('</span>', end);
end = markup.indexOf('<span class="editsection"', start);
if (end == -1) {
end = markup.indexOf('<div class="printfooter">', start);
this.sections.push(markup.substr(start, end - start));
end = -1;
}
this.sections.push(markup.substr(start, end - start));
}
if (this.sections.length > 0) {
var div = document.getElementById('bodyContent');
var link = div.insertBefore(document.createElement('a'), div.firstChild);
link.innerHTML = 'Start presentation';
link.setAttribute('href', '#presentation');
link.addEventListener('click', this.start, false);
}
},
start: function() {
var body = document.getElementsByTagName('body')[0];
body.innerHTML = '';
body.style.textAlign = 'center';
var prev = body.appendChild(document.createElement('a'));
prev.innerHTML = '← Prev';
prev.setAttribute('href', '#prev');
prev.style.font = '11px verdana, sans-serif';
prev.addEventListener('click', function() {
wikipedia_presentation.prev();
}, false);
body.appendChild(document.createTextNode(' / '));
var stop = body.appendChild(document.createElement('a'));
stop.innerHTML = 'Exit';
stop.setAttribute('href', '#exit');
stop.style.font = '11px verdana, sans-serif';
stop.addEventListener('click', function() {
wikipedia_presentation.stop();
}, false);
body.appendChild(document.createTextNode(' / '));
var next = body.appendChild(document.createElement('a'));
next.innerHTML = 'Next →';
next.setAttribute('href', '#next');
next.style.font = '11px verdana, sans-serif';
next.addEventListener('click', function() {
wikipedia_presentation.next();
}, false);
var slide = body.appendChild(document.createElement('div'));
slide.setAttribute('id', 'wikipedia_presentation');
slide.style.width = '780px';
// slide.style.background = 'red';
slide.style.margin = '10px 10px 10px 20px';
slide.style.textAlign = 'left';
slide.style.font = '2em verdana, sans-serif';
slide.innerHTML = wikipedia_presentation.sections[0];
var items = slide.getElementsByTagName('li');
for (var i = 1; i < items.length; i++) {
items[i].style.display = 'none';
}
document.addEventListener('keypress', wikipedia_presentation.keypress, false);
},
stop: function() {
var body = document.getElementsByTagName('body')[0];
body.innerHTML = wikipedia_presentation.orig_markup;
body.style.textAlign = 'left';
wikipedia_presentation.setup();
document.removeEventListener('keypress', wikipedia_presentation.keypress, false);
},
keypress: function(event) {
if (event.keyCode == 39) {
wikipedia_presentation.next();
} else if (event.keyCode == 37) {
wikipedia_presentation.prev();
}
},
prev: function() {
this.pos--;
if (this.pos == -1) {
this.pos = this.sections.length - 1;
}
var slide = document.getElementById('wikipedia_presentation');
slide.innerHTML = wikipedia_presentation.sections[this.pos];
},
next: function() {
var slide = document.getElementById('wikipedia_presentation');
var items = slide.getElementsByTagName('li');
var hidden = 0;
for (var i = 0; i < items.length; i++) {
if (items[i].style.display == 'none') {
hidden++;
}
}
if (hidden > 0) {
items[items.length - hidden].style.display = 'list-item';
return;
}
this.pos++;
if (this.pos == this.sections.length) {
this.pos = 0;
}
slide.innerHTML = wikipedia_presentation.sections[this.pos];
var items = slide.getElementsByTagName('li');
for (var i = 1; i < items.length; i++) {
items[i].style.display = 'none';
}
}
};
wikipedia_presentation.setup();