I was roaming at digg when i stumble upon this page:CSS+Javascript power. Fancy menu. Inside, i was amazed to see the way the snippets presented. In an expandable box. You can even see the box expanding line by line.

If you see my post yesterday, I tried my best to reproduce the same effect. But I failed.

To successfully create the expandable box, modify the following files of your active WordPress template/theme by adding the snippet:
style.css

.codediv
{
height:21px; width:470px;
overflow:hidden;
border: #333333 thin solid;
font-size: 11px;
display: block;
background-color: #fff;
}
.codeclicker
{
cursor:pointer;
}

header.php

<script language="javascript" type="text/javascript" src="<?php bloginfo('wpurl') ?>/js/behavior.js" ></script>
<script language="javascript" type="text/javascript" src="<?php bloginfo('wpurl') ?>/js/selector.js" ></script>
<script language="javascript" type="text/javascript">
var myrules = {
'.codeclicker' : {
onclick : function() {
//alert(this.parentNode.tagName);
var o = this.parentNode;
if (o.style.overflow == 'hidden') {
o.style.height = '100%';
o.style.overflow = 'scroll';
}
else {
o.style.height = '21px';
o.style.overflow = 'hidden';
}
}
}
};
Behavior.register(myrules);

</script>

Create a folder called “js” on your WordPress installation folder and create the following files on that folder:

selector.js

/* document.getElementsBySelector(selector)
- returns an array of element objects from the current document
matching the CSS selector. Selectors can contain element names,
class names and ids and can be nested. For example:elements = document.getElementsBySelect('div#main p a.external')
Will return an array of all 'a' elements with 'external' in their
class attribute that are contained inside 'p' elements that are
contained inside the 'div' element which has id="main"
New in version 0.4: Support for CSS2 and CSS3 attribute selectors:
See http://www.w3.org/TR/css3-selectors/#attribute-selectors
Version 0.4 - Simon Willison, March 25th 2003
-- Works in Phoenix 0.5, Mozilla 1.3, Opera 7, Internet Explorer 6, Internet Explorer 5 on Windows
-- Opera 7 fails
*/

function getAllChildren(e) {
	// Returns all children of element. Workaround required for IE5/Windows. Ugh.
	return e.all ? e.all : e.getElementsByTagName('*');
}

document.getElementsBySelector = function(selector) {
	// Attempt to fail gracefully in lesser browsers
	if (!document.getElementsByTagName) {
		return new Array();
	}

	// Split selector in to tokens
	var tokens = selector.split(' ');
	var currentContext = new Array(document);
	for (var i = 0; i < tokens.length; i++) {
		token = tokens[i].replace(/^s+/,'').replace(/s+$/,'');
		if (token.indexOf('#') > -1) {
			// Token is an ID selector
			var bits = token.split('#');
			var tagName = bits[0];
			var id = bits[1];
			var element = document.getElementById(id);
			if (tagName && element.nodeName.toLowerCase() != tagName) {
				// tag with that ID not found, return false
				return new Array();
			}

			// Set currentContext to contain just this element
			currentContext = new Array(element);
			continue; // Skip to next token
		}
		if (token.indexOf('.') > -1) {
			// Token contains a class selector
			var bits = token.split('.');
			var tagName = bits[0];
			var className = bits[1];
			if (!tagName) {
				tagName = '*';
			}

			// Get elements matching tag, filter them for class selector
			var found = new Array;
			var foundCount = 0;
			for (var h = 0; h < currentContext.length; h++) {
				var elements;
				if (tagName == '*') {
					elements = getAllChildren(currentContext[h]);
				} else {
					elements = currentContext[h].getElementsByTagName(tagName);
				}

				for (var j = 0; j < elements.length; j++) {
					found[foundCount++] = elements[j];
				}
			}
			currentContext = new Array();
			var currentContextIndex = 0;

			for (var k = 0; k < found.length; k++) {
				if (found[k].className && found[k].className.match(new RegExp('b'+className+'b'))) {
					currentContext[currentContextIndex++] = found[k];
				}
			}
			continue; // Skip to next token
		}
		// Code to deal with attribute selectors
		if (token.match(/^(w*)[(w+)([=~|^$*]?)=?"?([^]"]*)"?]$/)) {
			var tagName = RegExp.$1;
			var attrName = RegExp.$2;
			var attrOperator = RegExp.$3;
			var attrValue = RegExp.$4;
			if (!tagName) {
				tagName = '*';
			}
			// Grab all of the tagName elements within current context
			var found = new Array;
			var foundCount = 0;
			for (var h = 0; h < currentContext.length; h++) {
				var elements;
				if (tagName == '*') {
					elements = getAllChildren(currentContext[h]);
				} else {
					elements = currentContext[h].getElementsByTagName(tagName);
				}
				for (var j = 0; j < elements.length; j++) {
					found[foundCount++] = elements[j];
				}
			}
			currentContext = new Array();
			var currentContextIndex = 0;
			var checkFunction; // This function will be used to filter the elements
			switch (attrOperator) {
				case '=': // Equality
					checkFunction = function(e) { return (e.getAttribute(attrName) == attrValue); };
					break;
				case '~': // Match one of space seperated words
					checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('b'+attrValue+'b'))); };
					break;
				case '|': // Match start with value followed by optional hyphen
					checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('^'+attrValue+'-?'))); };
					break;
				case '^': // Match starts with value
					checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) == 0); };
					break;
				case '$': // Match ends with value - fails with "Warning" in Opera 7
					checkFunction = function(e) {
						return (e.getAttribute(attrName).lastIndexOf(attrValue) == e.getAttribute(attrName).length - attrValue.length);
					};
					break;
				case '*': // Match ends with value
					checkFunction = function(e) {
						return (e.getAttribute(attrName).indexOf(attrValue) > -1);
					};
					break;
				default :
					// Just test for existence of attribute
					checkFunction = function(e) { return e.getAttribute(attrName); };
			}
			currentContext = new Array();
			var currentContextIndex = 0;
			for (var k = 0; k < found.length; k++) {
				if (checkFunction(found[k])) {
					currentContext[currentContextIndex++] = found[k];
				}
			}
			// alert('Attribute Selector: '+tagName+' '+attrName+' '+attrOperator+' '+attrValue);
			continue; // Skip to next token
		}

		// If we get here, token is JUST an element (not a class or ID selector)
		tagName = token;
		var found = new Array();
		var foundCount = 0;
		for (var h = 0; h < currentContext.length; h++) {
			var elements = currentContext[h].getElementsByTagName(tagName);
			for (var j = 0; j < elements.length; j++) {
				found[foundCount++] = elements[j];
			}
		}

		currentContext = found;
	}
	return currentContext;
}

/* That revolting regular expression explained
/^(w+)[(w+)([=~|^$*]?)=?"?([^]"]*)"?]$/
---/  ---/-------------/    -------/
|      |         |               |
|      |         |           The value
|      |    ~,|,^,$,* or =
|   Attribute
Tag
*/

behavior.js

To use create the snippets use the following structure:

Don’t forget to create the “codeclicker.gif” that will be put on folder “images” in your WordPress installation folder (use bloginfo(‘wpurl’); ) the image height should be 20px (if more the image will be hidden since its overflow the “pre” tag)

Note: I tried to add changing the background color using CSS “background-color = “#bbbbbb”;” on the onclick event handler, but somehow it prevents the script running. Any idea? I also have yet to be able to slowly scroll the snippet box. Again, any idea??
Thank you for reading. Critics and comments are welcome

Share and Enjoy

 

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