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/*
* jQuery selectbox plugin
*
* Copyright (c) 2007 Sadri Sahraoui (brainfault.com)
* Licensed under the GPL license and MIT:
* http://www.opensource.org/licenses/GPL-license.php
* http://www.opensource.org/licenses/mit-license.php
*
* The code is inspired from Autocomplete plugin (http://www.dyve.net/jquery/?autocomplete)
*
* Revision: $Id$
* Version: 0.5
*
* Changelog :
* Version 0.5
* - separate css style for current selected element and hover element which solve the highlight issue
* Version 0.4
* - Fix width when the select is in a hidden div @Pawel Maziarz
* - Add a unique id for generated li to avoid conflict with other selects and empty values @Pawel Maziarz
*/
jQuery.fn.extend({
selectbox: function(options) {
return this.each(function() {
new jQuery.SelectBox(this, options);
});
}
});
/* pawel maziarz: work around for ie logging */
if (!window.console) {
var console = {
log: function(msg) {
}
}
}
/* */
jQuery.SelectBox = function(selectobj, options) {
var opt = options || {};
opt.inputClass = opt.inputClass || "selectbox3";
opt.containerClass = opt.containerClass || "selectbox-wrapper3";
opt.hoverClass = opt.hoverClass || "current3";
opt.currentClass = opt.selectedClass || "selected3"
opt.debug = opt.debug || false;
var elm_id = selectobj.id;
var active = -1;
var inFocus = false;
var hasfocus = 0;
//jquery object for select element
var $select = $(selectobj);
// jquery container object
var $container = setupContainer(opt);
//jquery input object
var $input = setupInput(opt);
// hide select and append newly created elements
$select.hide().before($input).before($container);
init();
$input
.click(function(){
if (!inFocus) {
$container.toggle();
}
})
.focus(function(){
if ($container.not(':visible')) {
inFocus = true;
$container.show();
}
})
.keydown(function(event) {
switch(event.keyCode) {
case 38: // up
event.preventDefault();
moveSelect(-1);
break;
case 40: // down
event.preventDefault();
moveSelect(1);
break;
//case 9: // tab
case 13: // return
event.preventDefault(); // seems not working in mac !
$('li.'+opt.hoverClass).trigger('click');
break;
case 27: //escape
hideMe();
break;
}
})
.blur(function() {
if ($container.is(':visible') && hasfocus > 0 ) {
if(opt.debug) console.log('container visible and has focus')
} else {
hideMe();
}
});
function hideMe() {
hasfocus = 0;
$container.hide();
}
function init() {
$container.append(getSelectOptions($input.attr('id'))).hide();
var width = $input.css('width');
$container.width(width);
}
function setupContainer(options) {
var container = document.createElement("div");
$container = $(container);
$container.attr('id', elm_id+'_container');
$container.addClass(options.containerClass);
return $container;
}
function setupInput(options) {
var input = document.createElement("input");
var $input = $(input);
$input.attr("id", elm_id+"_input");
$input.attr("type", "text");
$input.addClass(options.inputClass);
$input.attr("autocomplete", "off");
$input.attr("readonly", "readonly");
$input.attr("tabIndex", $select.attr("tabindex")); // "I" capital is important for ie
return $input;
}
function moveSelect(step) {
var lis = $("li", $container);
if (!lis) return;
active += step;
if (active < 0) {
active = 0;
} else if (active >= lis.size()) {
active = lis.size() - 1;
}
lis.removeClass(opt.hoverClass);
$(lis[active]).addClass(opt.hoverClass);
}
function setCurrent() {
var li = $("li."+opt.currentClass, $container).get(0);
var ar = (''+li.id).split('_');
var el = ar[ar.length-1];
$select.val(el);
$input.val($(li).html());
return true;
}
// select value
function getCurrentSelected() {
return $select.val();
}
// input value
function getCurrentValue() {
return $input.val();
}
function getSelectOptions(parentid) {
var select_options = new Array();
var ul = document.createElement('ul');
$select.children('option').each(function() {
var li = document.createElement('li');
li.setAttribute('id', parentid + '_' + $(this).val());
li.innerHTML = $(this).html();
if ($(this).is(':selected')) {
$input.val($(this).html());
$(li).addClass(opt.currentClass);
}
ul.appendChild(li);
$(li)
.mouseover(function(event) {
hasfocus = 1;
if (opt.debug) console.log('over on : '+this.id);
jQuery(event.target, $container).addClass(opt.hoverClass);
})
.mouseout(function(event) {
hasfocus = -1;
if (opt.debug) console.log('out on : '+this.id);
jQuery(event.target, $container).removeClass(opt.hoverClass);
})
.click(function(event) {
var fl = $('li.'+opt.hoverClass, $container).get(0);
if (opt.debug) console.log('click on :'+this.id);
$('li.'+opt.currentClass).removeClass(opt.currentClass);
$(this).addClass(opt.currentClass);
setCurrent();
hideMe();
});
});
return ul;
}
};
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Patrick Kalkman is a senior Software Architect with more than 20 years professional development experience. He works for
SimpleTechture where he helps teams develop state of the art web applications.
Patrick enjoys writing his
blog. It discusses agile software development. Patrick can be reached at patrick@simpletechture.nl.
Published Windows 8 apps:
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Awards:
Best Mobile article of March 2012
Best Mobile article of June 2012