/*
// jQuery multiSelect
//
// Version 1.0 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: $('#control_id').multiSelect( options, callback )
//
// Options: selectAll - whether or not to display the Select All option; true/false, default = true
// selectAllText - text to display for selecting/unselecting all options simultaneously
// noneSelected - text to display when there are no selected items in the list
// oneOrMoreSelected - text to display when there are one or more selected items in the list
// (note: you can use % as a placeholder for the number of items selected).
// Use * to show a comma separated list of all selected; default = '% selected'
//
// Dependencies: jQuery 1.2 or higher (http://jquery.com/)
// the jQuery Dimensions plugin (http://plugins.jquery.com/project/dimensions)
//
// Licensing & Terms of Use
//
// jQuery File Tree is licensed under a Creative Commons License and is copyrighted (C)2008 by Cory S.N. LaViska.
// For details, visit http://creativecommons.org/licenses/by/3.0/us/
//
*/
if(jQuery) (function($){
$.extend($.fn, {
multiSelect: function(o, callback) {
// Default options
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';
// Initialize each multiSelect
$(this).each( function() {
var select = $(this);
var html = '<input type="text" readonly="readonly" class="multiSelect" value="" style="cursor: default;" />';
html += '<div class="multiSelectOptions" style="position: absolute; z-index: 99999; display: none;">';
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).offset();
$(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);