/*
   Behaviour v1.1 by Ben Nolan, June 2005. Based largely on the work
   of Simon Willison (see comments by Simon below).

   Description:
   	
   	Uses css selectors to apply javascript behaviours to enable
   	unobtrusive javascript in html documents.
   	
   Usage:   
   
	var myrules = {
		'b.someclass' : function(element){
			element.onclick = function(){
				alert(this.innerHTML);
			}
		},
		'#someid u' : function(element){
			element.onmouseover = function(){
				this.innerHTML = "BLAH!";
			}
		}
	};
	
	Behaviour.register(myrules);
	
	// Call Behaviour.apply() to re-apply the rules (if you
	// update the dom, etc).

   License:
   
   	This file is entirely BSD licensed.
   	
   More information:
   	
   	http://ripcord.co.nz/behaviour/
   
*/   

var Behaviour = {
	list : new Array,
	
	register : function(sheet){
		Behaviour.list.push(sheet);
	},
	
	start : function(){
		Behaviour.addLoadEvent(function(){
			Behaviour.apply();
		});
	},
	
	apply : function(){
		for (h=0;sheet=Behaviour.list[h];h++){
			for (selector in sheet){
				list = document.getElementsBySelector(selector);
				
				if (!list){
					continue;
				}

				for (i=0;element=list[i];i++){
					sheet[selector](element);
				}
			}
		}
	},
	
	addLoadEvent : function(func){
		var oldonload = window.onload;
		
		if (typeof window.onload != 'function') {
			window.onload = func;
		} else {
			window.onload = function() {
				oldonload();
				func();
			}
		}
	}
}

Behaviour.start();

/*
   The following code is Copyright (C) Simon Willison 2004.

   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 (!currentContext[0]){
    	return;
    }
    
    // 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
*/

var myrules = {
    '#form_tool li' : function(element){
        element.onclick = function(){
            var comment = document.getElementById('input_comment')
            var a_text = element.childNodes[0].childNodes[0].childNodes[0];
            var code = element.id.substring(element.id.lastIndexOf('_') + 1);
            var code_child = code.substring(code.lastIndexOf('-') + 1);
            var selected_text = '';
            var spacer = '';
            var tag = '';
            if(code_child != code) {
                code = code.substring(0, code.lastIndexOf('-')); }
            if(comment && code) {
                // get selected text, if any
                selected_text = selectedText(comment);
                if(!selected_text)selected_text = '';
                // Fix Mozilla extra spacing behind the text when double-click a word
                if(selected_text.charAt(selected_text.length - 1) == ' ' )
                {
                    spacer = ' ';
                    selected_text = selected_text.substring(0, selected_text.length - 1);
                }
                if(code == 'url') {
                    tag = prompt("Enter url: ","http://");
                    if (tag == null) { return false; }
                    tag = '=' + tag;
                }
                if(code == 'img') {
                    tag1 = prompt("Enter image url: ","http://");
                    if (tag1 == null) { return false; }
                    selected_text = tag1;
                }
                if(code == 'attach') {
                    window.open(SITE_HREF+'index.php?n=forum&sub=attach&nobody=1','attach','toolbar=no, location=no, directories=no, status=no, resize=yes, menubar=no, scrollbars=yes, width=500, height=600,left=160,top=80');
                    return false; 
                }
                if(code == 'style') {
                    tag = prompt("Please enter a valid CSS attributes (e.g. font-weight: bold;): ","");
                    if (tag == "" || tag == null) { return false; }
                    tag = '=' + tag;
                }
                if(code == 'class') {
                    tag = prompt("Please enter a class name: ","");
                    if (tag == "" || tag == null) { return false; }
                    tag = '=' + tag;
                }
                if(code == 'size' || code == 'color' || code == 'align') {
                    if(code_child != code) {
                        if(code_child == 'custom') {
                            code_child = prompt("Please enter a HTML color code (e.g #FFFFFF, yellow) : ","");
                            if (code_child == "" || code_child == null) { return false; }
                        }
                        tag = '=' + code_child;
                    } else { return false; }
                }
                if(code == 'smile') {
                    if(code_child != code) {
                        insertAtCursor(comment, '[img]'+code_child+'[/img]'+spacer);
                        return false;
                    } else { return false; }
                }
                insertAtCursor(comment, '['+code+tag+']'+selected_text+'[/'+code+']'+spacer);
            }
            return false;
        }
    },
    '#form_tool ul li' : function(element){
        element.onmouseover = function() {
            this.className += " sfhover";
        }
        
        element.onmouseout = function() {
            this.className=this.className.replace(/\b(sfhover)\b/, "");
        }
    },
    '#preview_do' : function(element){
        element.onclick = function(){
            var request = new Ajax.Request(
                SITE_HREF+'index.php?n=ajax&sub=preview&nobody=1&ajaxon=1',
                {
                    method: 'post',
                    parameters: 'text=' + encodeURIComponent($F('input_comment')),
                    onComplete: function(reply){
                        $('input_preview').innerHTML = reply.responseText;
                        document.getElementById('input_block').style.display = 'none';
                        document.getElementById('preview_block').style.display = '';
                    }
                }
            );
            return false;
        }
    },
    '#preview_back' : function(element){
        element.onclick = function(){
            document.getElementById('input_preview').innerHTML = '';
            document.getElementById('input_block').style.display = '';
            document.getElementById('preview_block').style.display = 'none';
            return false;
        }
    }
    /*,
    '.quote' : function(element){
        element.onclick = function(){
            comdiv = this.parentNode.parentNode;
            comdiv.id.match(/^post(\d+)$/);
            var req = new JsHttpRequest();
            req.onreadystatechange = function() {
                if (req.readyState == 4) {
                    document.getElementById('input_comment').value += req.responseText;
                }
            }
            req.caching = false;
            req.open('GET', SITE_HREF+'index.php?n=ajax&sub=getquote&nobody=1&ajaxon=1', true);
            req.send({ postid: RegExp.$1 });
            new Effect.ScrollTo("write_form");
            return false;
        }
    },
    '.scroller' : function(element){
        element.onclick = function(){
            var v=this.getAttribute("href").substring(this.getAttribute("href").lastIndexOf('#') + 1);
            new Effect.ScrollTo(v,{transition:Effect.Transitions.slowstop,duration:2.0});
            return false;
        }
    }
    */
};

Behaviour.register(myrules);