instiki/public/javascripts/page_helper.js

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JavaScript
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/*
* Based on Simon Willison's blockquotes.js
* http://simon.incutio.com/archive/2002/12/20/#blockquoteCitations
*/
function extractBlockquoteCitations() {
var quotes = document.getElementsByTagName('blockquote');
for (i = 0; i < quotes.length; i++) {
var cite = quotes[i].getAttribute('cite');
if (cite && cite != '') {
var newlink = document.createElement('a');
newlink.setAttribute('href', cite);
newlink.setAttribute('title', cite);
newlink.appendChild(document.createTextNode('#'));
var newspan = document.createElement('span');
newspan.setAttribute('class','blockquotesource');
newspan.appendChild(newlink);
quotes[i].lastChild.previousSibling.appendChild(newspan);
}
}
}
function fixRunIn() {
// work around lack of gecko support for display:run-in
var re = /^num_|\s+num_|^un_|\s+un_|proof/;
$$('div > h6').each(function(element) {
if(re.test($(element.parentNode).className)) {
var new_span = new Element('span').update(element.textContent);
new_span.addClassName('theorem_label');
var next_el = element.next().firstChild;
next_el.parentNode.insertBefore(new_span, next_el);
var period = new Element('span').update('. ');
next_el.parentNode.insertBefore(period, next_el);
element.remove();
}
});
// add tombstone to proof, since gecko doesn't support :last-child properly
$$('div.proof').each(function(element) {
var l = element.childElements().length -1;
var span = new Element('span').update('\u00a0\u00a0\u25ae');
element.childElements()[l].insert(span);
});
}
function mactionWorkarounds() {
$$('maction[actiontype="tooltip"]').each( function(mtool){
Element.writeAttribute(mtool, 'title',
Element.firstDescendant(mtool).nextSibling.firstChild.data);
});
$$('maction[actiontype="statusline"]').each( function(mstatus){
var v = Element.firstDescendant(mstatus).nextSibling.firstChild.data;
Event.observe(mstatus, 'mouseover', function(){window.status = v;});
Event.observe(mstatus, 'mouseout', function(){window.status = '';});
});
}
function addS5button(page_name) {
var f = $('MarkupHelp');
if (f) {
var s5button = new Element('input', {id:'S5button', type:'button', value: 'Make this page an S5 slideshow'});
f.insert({top: s5button});
Event.observe(s5button, 'click', function(){
var preamble = "author: " + document.getElementById('author').value +
"\ncompany: \ntitle: " + page_name +
"\nsubtitle: \nslide_theme: default\nslide_footer: \nslide_subfooter: " +
"\n\n:category: S5-slideshow\n\n" + page_name +
"\n==============\n\nMy First Slide\n-----------------\n\n";
var content = document.getElementById('content');
content.value = preamble + content.value;
document.getElementById('S5button').hide();
});
}
}
function setupSVGedit(path){
var f = $('MarkupHelp');
var selected;
var before;
var after;
// create a control button
if (f) {
var SVGeditButton = new Element('input', {id:'SVGeditButton', type:'button', value: 'Create an SVG graphic'});
f.insert({top: SVGeditButton});
SVGeditButton.disabled = true;
Event.observe(SVGeditButton, 'click', function(){
var editor = window.open(path, 'Edit SVG graphic', 'status=1,resizable=1,scrollbars=1');
if (selected) {
editor.addEventListener("load", function() {
editor.svgCanvas.setCustomHandlers({
'save': function(window,svg){
window.opener.postMessage(svg, window.location.protocol + '//' + window.location.host);
window.close();
}
});
editor.svgCanvas.setSvgString(selected);
}, true);
} else {
editor.addEventListener("load", function() {
editor.svgCanvas.setCustomHandlers({
'save': function(window,svg){
window.opener.postMessage(svg, window.location.protocol + '//' + window.location.host);
window.close();
}
});
}, true);
}
SVGeditButton.disabled = true;
SVGeditButton.value = 'Create SVG graphic';
editor.focus();
});
}
var t = $('content');
var callback = function(){
// This is triggered by 'onmouseup' events
var sel = window.getSelection();
var a = sel.anchorOffset;
var f = sel.focusOffset;
// A bit of ugliness, because Gecko-based browsers
// don't support getSelection in textareas
if (t.selectionStart ) {
var begin = t.selectionStart;
var end = t.selectionEnd;
} else {
if( a < f) {
begin = a;
end = f;
} else {
begin = f;
end = a;
}
}
// finally, slice up the textarea content into before, selected, & after pieces
before = t.value.slice(0, begin);
selected = t.value.slice(begin, end);
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after = t.value.slice(end, t.value.length);
if (selected && selected != '') {
if ( selected.match(/^<svg(.|\n)*<\/svg>$/) ) {
SVGeditButton.disabled = false;
SVGeditButton.value = 'Edit existing SVG graphic';
} else {
SVGeditButton.disabled = true;
}
} else {
SVGeditButton.disabled = false;
SVGeditButton.value = 'Create SVG graphic';
}
}
Event.observe(t, 'mouseup', callback );
var my_loc = window.location.protocol + '//' + window.location.host;
Event.observe(window, "message", function(event){
if(event.origin !== my_loc) { return;}
t.value = before + event.data + after;
t.focus();
SVGeditButton.disabled = true;
SVGeditButton.value = 'Create SVG graphic';
});
}
function updateSize(elt, w, h) {
// adjust to the size of the user's browser area.
// w and h are the original, unadjusted, width and height per row/column
var parentheight = document.viewport.getHeight() - $('pageName').getHeight()
- $('editFormButtons').getHeight() - $('hidebutton').getHeight();
var parentwidth = $('Content').getWidth();
var f = $('MarkupHelp');
if (f.visible()) { parentwidth = parentwidth - f.getWidth() - 20 }
var changename = $('alter_title');
if (changename) {
parentheight = parentheight - changename.parentNode.getHeight()-2*h;
}
elt.writeAttribute({'cols': Math.floor(parentwidth/w) - 1,
'rows': Math.floor(parentheight/h) - 4 });
elt.setStyle({Width: parentwidth, Height: parentheight});
}
function resizeableTextarea() {
//make the textarea resize to fit available space
var f = $('MarkupHelp');
if (f) {
var hidebutton = new Element('input', {id:'hidebutton', type:'button', value: 'Hide markup help'});
f.insert({before: hidebutton});
}
$$('textarea#content').each( function(textarea) {
var w = textarea.getWidth()/textarea.getAttribute('cols');
var h = textarea.getStyle('lineHeight').replace(/(\d*)px/, "$1");
var changename = $('alter_title');
if (changename) {
Event.observe(changename.parentNode, 'change', function() {
updateSize(textarea, w, h);
});
}
Event.observe(hidebutton, 'click', function(){
if (f.visible()) {
f.hide();
hidebutton.writeAttribute({value: 'Show markup help'});
updateSize(textarea, w, h)
} else {
f.show();
hidebutton.writeAttribute({value: 'Hide markup help'});
updateSize(textarea, w, h)
}
});
Event.observe(window, 'resize', function(){ updateSize(textarea, w, h) });
updateSize(textarea, w, h);
});
}
window.onload = function (){
extractBlockquoteCitations();
fixRunIn();
mactionWorkarounds();
resizeableTextarea();
};