268 lines
11 KiB
JavaScript
268 lines
11 KiB
JavaScript
/*
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// jQuery multiSelect
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//
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// Version 1.0 beta
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//
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// Cory S.N. LaViska
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// A Beautiful Site (http://abeautifulsite.net/)
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// 06 April 2008
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//
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// Visit http://abeautifulsite.net/notebook.php?article=62 for more information
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//
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// Usage: $('#control_id').multiSelect( options, callback )
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//
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// Options: selectAll - whether or not to display the Select All option; true/false, default = true
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// selectAllText - text to display for selecting/unselecting all options simultaneously
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// noneSelected - text to display when there are no selected items in the list
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// oneOrMoreSelected - text to display when there are one or more selected items in the list
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// (note: you can use % as a placeholder for the number of items selected).
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// Use * to show a comma separated list of all selected; default = '% selected'
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//
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// Dependencies: jQuery 1.2 or higher (http://jquery.com/)
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// the jQuery Dimensions plugin (http://plugins.jquery.com/project/dimensions)
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//
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// Licensing & Terms of Use
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//
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// jQuery File Tree is licensed under a Creative Commons License and is copyrighted (C)2008 by Cory S.N. LaViska.
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// For details, visit http://creativecommons.org/licenses/by/3.0/us/
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//
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*/
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if(jQuery) (function($){
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$.extend($.fn, {
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multiSelect: function(o, callback) {
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// Default options
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if( !o ) var o = {};
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if( o.selectAll == undefined ) o.selectAll = true;
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if( o.selectAllText == undefined ) o.selectAllText = "Select All";
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if( o.noneSelected == undefined ) o.noneSelected = 'Select options';
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if( o.oneOrMoreSelected == undefined ) o.oneOrMoreSelected = '% selected';
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// Initialize each multiSelect
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$(this).each( function() {
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var select = $(this);
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var html = '<input type="text" readonly="readonly" class="multiSelect" value="" style="cursor: default;" />';
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html += '<div class="multiSelectOptions" style="position: absolute; z-index: 99999; display: none;">';
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if( o.selectAll ) html += '<label class="selectAll"><input type="checkbox" class="selectAll" />' + o.selectAllText + '</label>';
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$(select).find('OPTION').each( function() {
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if( $(this).val() != '' )
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html += '<label for="'+$(select).attr('name')+'">'+$(this).html() + '</label><input type="checkbox" name="' + $(select).attr('name') + '" value="' + $(this).val() + '"'+($(this).attr('selected')?' checked="checked"':'')+' />';
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});
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html += '</div>';
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$(select).after(html);
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// Events
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$(select).next('.multiSelect').mouseover( function() {
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$(this).addClass('hover');
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}).mouseout( function() {
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$(this).removeClass('hover');
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}).click( function() {
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// Show/hide on click
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if( $(this).hasClass('active') ) {
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$(this).multiSelectOptionsHide();
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} else {
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$(this).multiSelectOptionsShow();
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}
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return false;
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}).focus( function() {
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// So it can be styled with CSS
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$(this).addClass('focus');
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}).blur( function() {
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// So it can be styled with CSS
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$(this).removeClass('focus');
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});
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// Determine if Select All should be checked initially
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if( o.selectAll ) {
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var sa = true;
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$(select).next('.multiSelect').next('.multiSelectOptions').find('INPUT:checkbox').not('.selectAll').each( function() {
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if( !$(this).attr('checked') ) sa = false;
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});
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if( sa ) $(select).next('.multiSelect').next('.multiSelectOptions').find('INPUT.selectAll').attr('checked', true).parent().addClass('checked');
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}
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// Handle Select All
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$(select).next('.multiSelect').next('.multiSelectOptions').find('INPUT.selectAll').click( function() {
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if( $(this).attr('checked') == true ) $(this).parent().parent().find('INPUT:checkbox').attr('checked', true).parent().addClass('checked'); else $(this).parent().parent().find('INPUT:checkbox').attr('checked', false).parent().removeClass('checked');
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});
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// Handle checkboxes
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$(select).next('.multiSelect').next('.multiSelectOptions').find('INPUT:checkbox').click( function() {
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$(this).parent().parent().multiSelectUpdateSelected(o);
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$(this).parent().parent().find('LABEL').removeClass('checked').find('INPUT:checked').parent().addClass('checked');
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$(this).parent().parent().prev('.multiSelect').focus();
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if( !$(this).attr('checked') ) $(this).parent().parent().find('INPUT:checkbox.selectAll').attr('checked', false).parent().removeClass('checked');
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if( callback ) callback($(this));
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});
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// Initial display
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$(select).next('.multiSelect').next('.multiSelectOptions').each( function() {
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$(this).multiSelectUpdateSelected(o);
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$(this).find('INPUT:checked').parent().addClass('checked');
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});
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// Handle hovers
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$(select).next('.multiSelect').next('.multiSelectOptions').find('LABEL').mouseover( function() {
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$(this).parent().find('LABEL').removeClass('hover');
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$(this).addClass('hover');
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}).mouseout( function() {
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$(this).parent().find('LABEL').removeClass('hover');
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});
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// Keyboard
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$(select).next('.multiSelect').keydown( function(e) {
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// Is dropdown visible?
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if( $(this).next('.multiSelectOptions').is(':visible') ) {
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// Dropdown is visible
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// Tab
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if( e.keyCode == 9 ) {
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$(this).addClass('focus').trigger('click'); // esc, left, right - hide
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$(this).focus().next(':input').focus();
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return true;
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}
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// ESC, Left, Right
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if( e.keyCode == 27 || e.keyCode == 37 || e.keyCode == 39 ) {
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// Hide dropdown
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$(this).addClass('focus').trigger('click');
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}
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// Down
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if( e.keyCode == 40 ) {
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if( !$(this).next('.multiSelectOptions').find('LABEL').hasClass('hover') ) {
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// Default to first item
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$(this).next('.multiSelectOptions').find('LABEL:first').addClass('hover');
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} else {
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// Move down, cycle to top if on bottom
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$(this).next('.multiSelectOptions').find('LABEL.hover').removeClass('hover').next('LABEL').addClass('hover');
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if( !$(this).next('.multiSelectOptions').find('LABEL').hasClass('hover') ) {
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$(this).next('.multiSelectOptions').find('LABEL:first').addClass('hover');
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}
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}
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return false;
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}
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// Up
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if( e.keyCode == 38 ) {
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if( !$(this).next('.multiSelectOptions').find('LABEL').hasClass('hover') ) {
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// Default to first item
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$(this).next('.multiSelectOptions').find('LABEL:first').addClass('hover');
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} else {
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// Move up, cycle to bottom if on top
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$(this).next('.multiSelectOptions').find('LABEL.hover').removeClass('hover').prev('LABEL').addClass('hover');
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if( !$(this).next('.multiSelectOptions').find('LABEL').hasClass('hover') ) {
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$(this).next('.multiSelectOptions').find('LABEL:last').addClass('hover');
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}
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}
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return false;
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}
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// Enter, Space
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if( e.keyCode == 13 || e.keyCode == 32 ) {
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// Select All
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if( $(this).next('.multiSelectOptions').find('LABEL.hover INPUT:checkbox').hasClass('selectAll') ) {
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if( $(this).next('.multiSelectOptions').find('LABEL.hover INPUT:checkbox').attr('checked') ) {
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// Uncheck all
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$(this).next('.multiSelectOptions').find('INPUT:checkbox').attr('checked', false).parent().removeClass('checked');
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} else {
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// Check all
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$(this).next('.multiSelectOptions').find('INPUT:checkbox').attr('checked', true).parent().addClass('checked');
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}
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$(this).next('.multiSelectOptions').multiSelectUpdateSelected(o);
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if( callback ) callback($(this));
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return false;
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}
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// Other checkboxes
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if( $(this).next('.multiSelectOptions').find('LABEL.hover INPUT:checkbox').attr('checked') ) {
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// Uncheck
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$(this).next('.multiSelectOptions').find('LABEL.hover INPUT:checkbox').attr('checked', false);
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$(this).next('.multiSelectOptions').multiSelectUpdateSelected(o);
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$(this).next('.multiSelectOptions').find('LABEL').removeClass('checked').find('INPUT:checked').parent().addClass('checked');
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// Select all status can't be checked at this point
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$(this).next('.multiSelectOptions').find('INPUT:checkbox.selectAll').attr('checked', false).parent().removeClass('checked');
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if( callback ) callback($(this));
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} else {
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// Check
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$(this).next('.multiSelectOptions').find('LABEL.hover INPUT:checkbox').attr('checked', true);
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$(this).next('.multiSelectOptions').multiSelectUpdateSelected(o);
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$(this).next('.multiSelectOptions').find('LABEL').removeClass('checked').find('INPUT:checked').parent().addClass('checked');
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if( callback ) callback($(this));
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}
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}
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return false;
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} else {
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// Dropdown is not visible
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if( e.keyCode == 38 || e.keyCode == 40 || e.keyCode == 13 || e.keyCode == 32 ) { // down, enter, space - show
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// Show dropdown
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$(this).removeClass('focus').trigger('click');
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$(this).next('.multiSelectOptions').find('LABEL:first').addClass('hover');
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return false;
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}
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// Tab key
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if( e.keyCode == 9 ) {
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// Shift focus to next INPUT element on page
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$(this).focus().next(':input').focus();
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return true;
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}
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}
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// Prevent enter key from submitting form
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if( e.keyCode == 13 ) return false;
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});
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// Eliminate the original form element
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$(select).remove();
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});
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},
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// Hide the dropdown
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multiSelectOptionsHide: function() {
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$(this).removeClass('active').next('.multiSelectOptions').hide();
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},
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// Show the dropdown
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multiSelectOptionsShow: function() {
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// Hide any open option boxes
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$('.multiSelect').multiSelectOptionsHide();
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$(this).next('.multiSelectOptions').find('LABEL').removeClass('hover');
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$(this).addClass('active').next('.multiSelectOptions').show();
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// Position it
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var offset = $(this).offset();
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$(this).next('.multiSelectOptions').css({ top: offset.top + $(this).outerHeight() + 'px' });
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$(this).next('.multiSelectOptions').css({ left: offset.left + 'px' });
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// Disappear on hover out
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multiSelectCurrent = $(this);
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var timer = '';
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$(this).next('.multiSelectOptions').hover( function() {
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clearTimeout(timer);
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}, function() {
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timer = setTimeout('$(multiSelectCurrent).multiSelectOptionsHide(); $(multiSelectCurrent).unbind("hover");', 250);
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});
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},
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// Update the textbox with the total number of selected items
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multiSelectUpdateSelected: function(o) {
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var i = 0, s = '';
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$(this).find('INPUT:checkbox:checked').not('.selectAll').each( function() {
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i++;
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})
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if( i == 0 ) {
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$(this).prev('INPUT.multiSelect').val( o.noneSelected );
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} else {
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if( o.oneOrMoreSelected == '*' ) {
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var display = '';
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$(this).find('INPUT:checkbox:checked').each( function() {
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if( $(this).parent().text() != o.selectAllText ) display = display + $(this).parent().text() + ', ';
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});
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display = display.substr(0, display.length - 2);
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$(this).prev('INPUT.multiSelect').val( display );
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} else {
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$(this).prev('INPUT.multiSelect').val( o.oneOrMoreSelected.replace('%', i) );
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}
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}
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}
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});
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})(jQuery);
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