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(function () {
var parse_date = function (text) {
/* Parse an ISO 8601 date string. */
var m = /^([0-9]{4})-([0-9]{2})-([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})Z$/.exec(text);
return new Date(Date.UTC(+m[1], +m[2] - 1, +m[3], +m[4], +m[5], +m[6]));
};
var format_date = function (d) {
/* Format a date for output. */
var pad = function(number) {
return ('00' + number).slice(-2);
};
var tz = -d.getTimezoneOffset() / 60;
if (tz >= 0) {
tz = "+" + tz;
};
return ("" + d.getFullYear() + "-" +
pad(d.getMonth() + 1) + "-" +
pad(d.getDate()) + " " +
pad(d.getHours()) + ":" +
pad(d.getMinutes()) + " " +
"GMT" + tz);
};
var localize_dates = function () {
/* Scan whole document for UTC dates and replace them with
* local time versions */
var nodes = document.getElementsByTagName('abbr');
for (var i=0, len=nodes.length; i < len; ++i) {
var node = nodes[i];
if (node.className === 'date') {
var d = parse_date(node.getAttribute('title'));
if (d) {
node.textContent = format_date(d);
};
};
};
};
var js_editor = function () {
/* Make double click invoke the editor and scroll it to the right place. */
var textBox = document.getElementById('hatta-editortext');
if (textBox) {
/* We have an editor, so scroll it to the right place. */
var jumpLine = 0 + document.location.hash.substring(1);
var textLines = textBox.textContent.match(/(.*\n)/g);
var scrolledText = '';
for (var i=0, len=textLines.length; i < len && i < jumpLine; ++i) {
scrolledText += textLines[i];
}
/* Put the cursor in the right place. */
textBox.focus();
if (textBox.setSelectionRange) {
textBox.setSelectionRange(scrolledText.length, scrolledText.length);
} else if (textBox.createTextRange) {
var range = textBox.createTextRange();
range.collapse(true);
range.moveEnd('character', scrolledText.length);
range.moveStart('character', scrolledText.length);
range.select();
}
/* Determine the height of our text. */
var scrollPre = document.createElement('pre');
textBox.parentNode.appendChild(scrollPre);
var style = window.getComputedStyle(textBox, '');
scrollPre.style.font = style.font;
scrollPre.style.border = style.border;
scrollPre.style.outline = style.outline;
scrollPre.style.lineHeight = style.lineHeight;
scrollPre.style.letterSpacing = style.letterSpacing;
scrollPre.style.fontFamily = style.fontFamily;
scrollPre.style.fontSize = style.fontSize;
scrollPre.style.padding = 0;
scrollPre.style.overflow = 'scroll';
try { scrollPre.style.whiteSpace = "-moz-pre-wrap" } catch(e) {};
try { scrollPre.style.whiteSpace = "-o-pre-wrap" } catch(e) {};
try { scrollPre.style.whiteSpace = "-pre-wrap" } catch(e) {};
try { scrollPre.style.whiteSpace = "pre-wrap" } catch(e) {};
scrollPre.textContent = scrolledText;
/* Scroll our editor to the right place. */
textBox.scrollTop = scrollPre.scrollHeight;
scrollPre.parentNode.removeChild(scrollPre);
} else {
/* We have a normal page, make it go to editor on double click. */
var baseUrl = '';
var tags = document.getElementsByTagName('link');
for (var i=0, len=tags.length; i < len; ++i) {
var tag = tags[i];
if (tag.getAttribute('type') === 'application/wiki') {
baseUrl = tag.getAttribute('href');
}
}
if (baseUrl==='') {
return;
}
var tagList = ['p', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'pre',
'ul', 'div'];
var dblclick = function () {
/* The callback that invokes the editor. */
var url = baseUrl + '#' + this.id.replace('line_', '');
document.location = url;
return false;
};
for (var j=0, len=tagList.length; j < len; ++j) {
var tags = document.getElementsByTagName(tagList[j]);
for (var i=0, len2=tags.length; i < len2; ++i) {
var tag = tags[i];
if (tag.id && tag.id.match(/^line_\d+$/)) {
tag.ondblclick = dblclick;
};
};
};
};
};
var purple_numbers = function () {
/* Add links to the headings. */
var tagList = ['h1', 'h2', 'h3', 'h4', 'h5', 'h6'];
for (var j=0, len=tagList.length; j < len; ++j) {
var tags = document.getElementsByTagName(tagList[j]);
for (var i=0, len2=tags.length; i < len2; ++i) {
var tag = tags[i];
var prev = tag.previousSibling;
while (prev && !prev.tagName) {
prev = prev.previousSibling;
};
if (prev && prev.tagName === 'A') {
var name = prev.getAttribute('name');
if (name) {
tag.insertAdjacentHTML('beforeend', '<a href="#' + name +
'" class="hatta-purple">¶</a>');
};
};
};
};
};
window.onload = function () {
/* Initialize our scripts when the document loads. */
localize_dates();
js_editor();
purple_numbers();
};
})();
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