/*
// jQuery multiSelect
//
// Version 1.0.1 beta
//
// Cory S.N. LaViska
// A Beautiful Site (http://abeautifulsite.net/)
// 06 April 2008
//
// Visit http://abeautifulsite.net/notebook.php?article=62 for more information
//
// Usage: $('#control_id').multiSelect( options, callback )
//
// Options:  selectAll          - whether or not to display the Select All option; true/false, default = true
//           selectAllText      - text to display for selecting/unselecting all options simultaneously
//           noneSelected       - text to display when there are no selected items in the list
//           oneOrMoreSelected  - text to display when there are one or more selected items in the list
//                                (note: you can use % as a placeholder for the number of items selected).
//                                Use * to show a comma separated list of all selected; default = '% selected'
//
// Dependencies:  jQuery 1.2.6 or higher (http://jquery.com/)
//
// Change Log:
//
//		1.0.1	- Updated to work with jQuery 1.2.6+ (no longer requires the dimensions plugin)
//				- Changed $(this).offset() to $(this).position(), per James' and Jono's suggestions
//				
//
// Licensing & Terms of Use
// 
// jQuery File Tree is licensed under a Creative Commons License and is copyrighted (C)2008 by Cory S.N. LaViska.
// For details, visit http://creativecommons.org/licenses/by/3.0/us/
//	
*/

/**
 * Concatenates the values of a variable into an easily readable string
 * by Matt Hackett [scriptnode.com]
 * @param {Object} x The variable to debug
 * @param {Number} max The maximum number of recursions allowed (keep low, around 5 for HTML elements to prevent errors) [default: 10]
 * @param {String} sep The separator to use between [default: a single space ' ']
 * @param {Number} l The current level deep (amount of recursion). Do not use this parameter: it's for the function's own use
 */
function print_r(x, max, sep, l) {

	l = l || 0;
	max = max || 10;
	sep = sep || ' ';

	if (l > max) {
		return "[WARNING: Too much recursion]\n";
	}

	var
		i,
		r = '',
		t = typeof x,
		tab = '';

	if (x === null) {
		r += "(null)\n";
	} else if (t == 'object') {

		l++;

		for (i = 0; i < l; i++) {
			tab += sep;
		}

		if (x && x.length) {
			t = 'array';
		}

		r += '(' + t + ") :\n";

		for (i in x) {
			try {
				r += tab + '[' + i + '] : ' + print_r(x[i], max, sep, (l + 1));
			} catch(e) {
				return "[ERROR: " + e + "]\n";
			}
		}

	} else {

		if (t == 'string') {
			if (x == '') {
				x = '(empty)';
			}
		}

		r += '(' + t + ') ' + x + "\n";

	}

	return r;

};
var_dump = print_r;

function stripAlphaChars(pstrSource) 
{ 
var m_strOut = new String(pstrSource); 
    m_strOut = m_strOut.replace(/[^0-9]/g, ''); 

    return m_strOut; 
}

function intval( mixed_var, base ) {
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: stensi
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // *     example 1: intval('Kevin van Zonneveld');
    // *     returns 1: 0
    // *     example 2: intval(4.2);
    // *     returns 2: 4
    // *     example 3: intval(42, 8);
    // *     returns 3: 42
    // *     example 4: intval('09');
    // *     returns 4: 9
 
    var tmp;

    var type = typeof( mixed_var );
 
    if(type == 'boolean'){
        if (mixed_var == true) {
            return 1;
        } else {
            return 0;
        }
    } else if(type == 'string'){
		tmp = stripAlphaChars(mixed_var);
        if(isNaN(tmp) || !isFinite(tmp)){
            return 0;
        } else{
            return tmp.toString(base || 10);
        }
    } else if(type == 'number' && isFinite(mixed_var) ){
        return Math.floor(mixed_var);
    } else{
        return 0;
    }
}

if(jQuery) (function($){
	
	$.extend($.fn, {
		multiSelect: function(o, callback) {
			// Default options
			var width_combo;
			var myattr;
			if( !o ) var o = {};
			if( o.selectAll == undefined ) o.selectAll = true;
			if( o.selectAllText == undefined ) o.selectAllText = "Select All";
			if( o.noneSelected == undefined ) o.noneSelected = 'Select options';
			if( o.oneOrMoreSelected == undefined ) o.oneOrMoreSelected = '% selected';
			if( o.width == undefined ) o.width = "206px";
			
			// Initialize each multiSelect
			$(this).each( function() {
				var select = $(this);

				// check for parameters in the element attributes that can override the options
				myattr=select.attr('myoptions');
				if (myattr) {
					evalstr = 'var ao='+myattr;
					eval(evalstr);
				}
				if( !ao ) var ao = {};
				if( !(ao.selectAll == undefined) ) o.selectAll = ao.selectAll;
				if( !(ao.selectAllText == undefined) ) o.selectAllText = ao.selectAllText;
				if( !(ao.noneSelected == undefined) ) o.noneSelected = ao.noneSelected;
				if( !(ao.oneOrMoreSelected == undefined) ) o.oneOrMoreSelected = ao.oneOrMoreSelected;
				if( !(ao.width == undefined) ) o.width = ao.width;

				if ( o.width == 'all') {
					width_combo = '100%';
					o.width = '100%';
					// maybe get parent width instead?
				} else {
					width_combo = (intval(o.width)-24)+"px";
					o.width = intval(o.width)+"px";
				}
				
				var html = '<input type="text" readonly="readonly" class="multiSelect" value="" style="cursor: default; width: '+width_combo+';" />';
				html += '<div class="multiSelectOptions" style="position: absolute; z-index: 99999; display: none; overflow: auto; width: '+o.width+';">';
				if( o.selectAll ) html += '<label class="selectAll"><input type="checkbox" class="selectAll" />' + o.selectAllText + '</label>';
				$(select).find('OPTION').each( function() {
					if( $(this).val() != '' ) {
						html += '<label><input type="checkbox" name="' + $(select).attr('name') + '" value="' + $(this).val() + '"';
						if( $(this).attr('selected') ) html += ' checked="checked"';
						html += ' />' + $(this).html() + '</label>';
					}
				});
				html += '</div>';
				$(select).after(html);
				
				// Events
				$(select).next('.multiSelect').mouseover( function() {
					$(this).addClass('hover');
				}).mouseout( function() {
					$(this).removeClass('hover');
				}).click( function() {
					// Show/hide on click
					if( $(this).hasClass('active') ) {
						$(this).multiSelectOptionsHide();
					} else {
						$(this).multiSelectOptionsShow();
					}
					return false;
				}).focus( function() {
					// So it can be styled with CSS
					$(this).addClass('focus');
				}).blur( function() {
					// So it can be styled with CSS
					$(this).removeClass('focus');
				});
				
				// Determine if Select All should be checked initially
				if( o.selectAll ) {
					var sa = true;
					$(select).next('.multiSelect').next('.multiSelectOptions').find('INPUT:checkbox').not('.selectAll').each( function() {
						if( !$(this).attr('checked') ) sa = false;
					});
					if( sa ) $(select).next('.multiSelect').next('.multiSelectOptions').find('INPUT.selectAll').attr('checked', true).parent().addClass('checked');
				}
				
				// Handle Select All
				$(select).next('.multiSelect').next('.multiSelectOptions').find('INPUT.selectAll').click( function() {
					if( $(this).attr('checked') == true ) $(this).parent().parent().find('INPUT:checkbox').attr('checked', true).parent().addClass('checked'); else $(this).parent().parent().find('INPUT:checkbox').attr('checked', false).parent().removeClass('checked');
				});
				
				// Handle checkboxes
				$(select).next('.multiSelect').next('.multiSelectOptions').find('INPUT:checkbox').click( function() {
					$(this).parent().parent().multiSelectUpdateSelected(o);
					$(this).parent().parent().find('LABEL').removeClass('checked').find('INPUT:checked').parent().addClass('checked');
					$(this).parent().parent().prev('.multiSelect').focus();
					if( !$(this).attr('checked') ) $(this).parent().parent().find('INPUT:checkbox.selectAll').attr('checked', false).parent().removeClass('checked');
					if( callback ) callback($(this));
				});
				
				// Initial display
				$(select).next('.multiSelect').next('.multiSelectOptions').each( function() {
					$(this).multiSelectUpdateSelected(o);
					$(this).find('INPUT:checked').parent().addClass('checked');
				});
				
				// Handle hovers
				$(select).next('.multiSelect').next('.multiSelectOptions').find('LABEL').mouseover( function() {
					$(this).parent().find('LABEL').removeClass('hover');
					$(this).addClass('hover');
				}).mouseout( function() {
					$(this).parent().find('LABEL').removeClass('hover');
				});
				
				// Keyboard
				$(select).next('.multiSelect').keydown( function(e) {
					// Is dropdown visible?
					if( $(this).next('.multiSelectOptions').is(':visible') ) {
						// Dropdown is visible
						// Tab
						if( e.keyCode == 9 ) {
							$(this).addClass('focus').trigger('click'); // esc, left, right - hide
							$(this).focus().next(':input').focus();
							return true;
						}
						
						// ESC, Left, Right
						if( e.keyCode == 27 || e.keyCode == 37 || e.keyCode == 39 ) {
							// Hide dropdown
							$(this).addClass('focus').trigger('click');
						}
						// Down
						if( e.keyCode == 40 ) {
							if( !$(this).next('.multiSelectOptions').find('LABEL').hasClass('hover') ) {
								// Default to first item
								$(this).next('.multiSelectOptions').find('LABEL:first').addClass('hover');
							} else {
								// Move down, cycle to top if on bottom
								$(this).next('.multiSelectOptions').find('LABEL.hover').removeClass('hover').next('LABEL').addClass('hover');
								if( !$(this).next('.multiSelectOptions').find('LABEL').hasClass('hover') ) {
									$(this).next('.multiSelectOptions').find('LABEL:first').addClass('hover');
								}
							}
							return false;
						}
						// Up
						if( e.keyCode == 38 ) {
							if( !$(this).next('.multiSelectOptions').find('LABEL').hasClass('hover') ) {
								// Default to first item
								$(this).next('.multiSelectOptions').find('LABEL:first').addClass('hover');
							} else {
								// Move up, cycle to bottom if on top
								$(this).next('.multiSelectOptions').find('LABEL.hover').removeClass('hover').prev('LABEL').addClass('hover');
								if( !$(this).next('.multiSelectOptions').find('LABEL').hasClass('hover') ) {
									$(this).next('.multiSelectOptions').find('LABEL:last').addClass('hover');
								}
							}
							return false;
						}
						// Enter, Space
						if( e.keyCode == 13 || e.keyCode == 32 ) {
							// Select All
							if( $(this).next('.multiSelectOptions').find('LABEL.hover INPUT:checkbox').hasClass('selectAll') ) {
								if( $(this).next('.multiSelectOptions').find('LABEL.hover INPUT:checkbox').attr('checked') ) {
									// Uncheck all
									$(this).next('.multiSelectOptions').find('INPUT:checkbox').attr('checked', false).parent().removeClass('checked');
								} else {
									// Check all
									$(this).next('.multiSelectOptions').find('INPUT:checkbox').attr('checked', true).parent().addClass('checked');
								}
								$(this).next('.multiSelectOptions').multiSelectUpdateSelected(o);
								if( callback ) callback($(this));
								return false;
							}
							// Other checkboxes
							if( $(this).next('.multiSelectOptions').find('LABEL.hover INPUT:checkbox').attr('checked') ) {
								// Uncheck
								$(this).next('.multiSelectOptions').find('LABEL.hover INPUT:checkbox').attr('checked', false);
								$(this).next('.multiSelectOptions').multiSelectUpdateSelected(o);
								$(this).next('.multiSelectOptions').find('LABEL').removeClass('checked').find('INPUT:checked').parent().addClass('checked');
								// Select all status can't be checked at this point
								$(this).next('.multiSelectOptions').find('INPUT:checkbox.selectAll').attr('checked', false).parent().removeClass('checked');
								if( callback ) callback($(this));
							} else {
								// Check
								$(this).next('.multiSelectOptions').find('LABEL.hover INPUT:checkbox').attr('checked', true);
								$(this).next('.multiSelectOptions').multiSelectUpdateSelected(o);
								$(this).next('.multiSelectOptions').find('LABEL').removeClass('checked').find('INPUT:checked').parent().addClass('checked');
								if( callback ) callback($(this));
							}
						}
						return false;
					} else {
						// Dropdown is not visible
						if( e.keyCode == 38 || e.keyCode == 40 || e.keyCode == 13 || e.keyCode == 32 ) { // down, enter, space - show
							// Show dropdown
							$(this).removeClass('focus').trigger('click');
							$(this).next('.multiSelectOptions').find('LABEL:first').addClass('hover');
							return false;
						}
						//  Tab key
						if( e.keyCode == 9 ) {
							// Shift focus to next INPUT element on page
							$(this).focus().next(':input').focus();
							return true;
						}
					}
					// Prevent enter key from submitting form
					if( e.keyCode == 13 ) return false;
				});
				
				// Eliminate the original form element
				$(select).remove();
			});
			
		},
		
		// Hide the dropdown
		multiSelectOptionsHide: function() {
			$(this).removeClass('active').next('.multiSelectOptions').hide();
		},
		
		// Show the dropdown
		multiSelectOptionsShow: function() {
			// Hide any open option boxes
			$('.multiSelect').multiSelectOptionsHide();
			$(this).next('.multiSelectOptions').find('LABEL').removeClass('hover');
			$(this).addClass('active').next('.multiSelectOptions').show();
			
			// Position it
			var offset = $(this).position();
			$(this).next('.multiSelectOptions').css({ top:  offset.top + $(this).outerHeight() + 'px' });
			$(this).next('.multiSelectOptions').css({ left: offset.left + 'px' });
			
			// Disappear on hover out
			multiSelectCurrent = $(this);
			var timer = '';
			$(this).next('.multiSelectOptions').hover( function() {
				clearTimeout(timer);
			}, function() {
				timer = setTimeout('$(multiSelectCurrent).multiSelectOptionsHide(); $(multiSelectCurrent).unbind("hover");', 250);
			});
			
		},
		
		// Update the textbox with the total number of selected items
		multiSelectUpdateSelected: function(o) {
			var i = 0, s = '';
			$(this).find('INPUT:checkbox:checked').not('.selectAll').each( function() {
				i++;
			})
			if( i == 0 ) {
				$(this).prev('INPUT.multiSelect').val( o.noneSelected );
			} else {
				if( o.oneOrMoreSelected == '*' ) {
					var display = '';
					$(this).find('INPUT:checkbox:checked').each( function() {
						if( $(this).parent().text() != o.selectAllText ) display = display + $(this).parent().text() + ', ';
					});
					display = display.substr(0, display.length - 2);
					$(this).prev('INPUT.multiSelect').val( display );
				} else {
					$(this).prev('INPUT.multiSelect').val( o.oneOrMoreSelected.replace('%', i) );
				}
			}
		}
		
	});
	
})(jQuery);