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jquery.dropp.js
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jquery.dropp.js
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/*
* Dropp
* http://github.com/matrushka/Dropp
* @requires jQuery v1.3 or later
*
* Dropp is a jQuery plugin which replaces regular droprown menus ( <select> elements ) with stylable alternatives.
*
* 2010 - Baris Gumustas
*/
(function ($) {
// variables for key caches
window.dropp_key_cache = {};
window.dropp_key_cache.cache = '';
window.dropp_key_cache.timeout = null;
function clearDropDowns() {
var visible_list, visible_list_data;
visible_list = $('.dropp ul:visible');
if (visible_list.length > 0) {
visible_list.hide();
visible_list_data = visible_list.closest('.dropp').data('dropp');
if (typeof visible_list_data !== 'undefined') {
visible_list.removeClass(visible_list_data.settings.class_active_dropdown);
}
}
}
$('.dropp').live('click', function (event) {
event.stopPropagation();
});
$('.dropp ul li a').live('mouseover', function () {
$(this).closest('ul').find('a').removeClass('hover');
$(this).addClass('hover');
});
$(document).bind('keypress', function (event) {
if (event.keyCode === 27) {
event.preventDefault();
clearDropDowns();
}
});
$(document).click(function () {
clearDropDowns();
});
$.fn.dropp = function (user_settings) {
var settings = {
'phrase_on_multiple' : false,
'class_dropdown_wrapper' : 'dropdown_wrapper',
'class_dropdown_list' : 'dropdown_list',
'class_visible_dropdown' : 'dropdown',
'class_option_selected' : 'selected',
'class_active_dropdown' : 'active',
'substract_list_border_width' : true,
'keyboard_support' : true
};
if (user_settings) {
$.extend(settings, user_settings);
}
return this.each(function () {
// Start of loop
var select, dropdown, list, values, list_width, widest_element, wrapper, select_class, list_of_contents;
list_of_contents = [];
widest_element = null;
select = $(this);
// Write settings to data to read later for global events
select.data('dropp', {
settings: settings
});
select.hide();
select.wrap('<div></div>');
select_class = select.attr('class');
if (typeof (select_class) === 'undefined') {
select_class = null;
}
select.parent().attr('class', select_class).addClass(settings.class_dropdown_wrapper).addClass('dropp');
dropdown = $('<a href="#"/>').addClass(settings.class_visible_dropdown).appendTo(select.parent());
list = $('<ul/>').addClass(settings.class_dropdown_list).addClass('dropp_dropdown_list').hide().appendTo(select.parent());
wrapper = list.closest('.' + settings.class_dropdown_wrapper);
list.css('position', 'absolute').css('z-index', '9999');
select.find('option').each(function () {
var item, list, list_item, link;
item = $(this);
list_of_contents.push(item.text().toLowerCase());
list = item.closest('.' + settings.class_dropdown_wrapper).find('ul.dropp_dropdown_list');
list_item = $('<li/>').appendTo(list);
link = $('<a href="#"/>').text(item.text());
link.data('option', item);
list_item.append(link);
item.data('replacement', link);
if (typeof select.attr('multiple') !== undefined && (select.attr('multiple') === true || select.attr('multiple') === 'multiple')) {
if (typeof item.attr('selected') !== undefined && (item.attr('selected') === true || item.attr('selected') === 'selected')) {
link.addClass(settings.class_option_selected);
}
}
// Select Event Listener
link.bind('select', function (event, trigger_drowndown) {
event.preventDefault();
var link, item, select, dropdown, values;
link = $(this);
item = link.data('option');
select = wrapper.find('select');
dropdown = wrapper.find('.' + settings.class_visible_dropdown);
if (typeof select.attr('multiple') === 'undefined' || select.attr('multiple') === false) {
select.find('option:selected').removeAttr('selected');
dropdown.text($(this).text());
item.attr('selected', 'selected');
list.hide();
dropdown.removeClass(settings.class_active_dropdown);
} else {
if (typeof item.attr('selected') === 'undefined' || item.attr('selected') === false) {
item.attr('selected', 'selected');
link.addClass(settings.class_option_selected);
} else {
item.removeAttr('selected');
link.removeClass(settings.class_option_selected);
}
values = [];
select.find('option:selected').each(function () {
values.push($(this).text());
});
if (values.length === 0) {
if (typeof select.attr('placeholder') !== 'undefined') {
dropdown.text(select.attr('placeholder'));
} else {
dropdown.html(' ');
}
} else {
if (values.length > 1 && settings.phrase_on_multiple) {
dropdown.text(settings.phrase_on_multiple);
} else {
dropdown.text(values.join(', '));
}
}
}
if (trigger_drowndown) {
select.trigger('change');
}
});
// Click Event
link.click(function () {
$(this).trigger('select', [true]);
return false;
});
});
if (settings.keyboard_support) {
dropdown.bind('keypress', function (event) {
var is_scrollable, character, found_index, cursor_pattern, found_item, option_index;
event.preventDefault();
clearTimeout(window.dropp_key_cache.timeout);
switch (event.keyCode) {
case 38:
// up
found_item = list.find('a.hover').closest('li').prev('li');
if (found_item.length > 0) {
list.find('a.hover').removeClass('hover');
found_item.find('a').addClass('hover');
found_item.closest('ul').get(0).scrollTop = found_item.closest('li').get(0).offsetTop;
}
break;
case 40:
// down
found_item = list.find('a.hover').closest('li').next('li');
if (found_item.length === 0 && list.find('a.hover').length === 0) {
found_item = list.find('li:eq(0)');
}
if (found_item.length > 0) {
list.find('a.hover').removeClass('hover');
found_item.find('a').addClass('hover');
found_item.closest('ul').get(0).scrollTop = found_item.closest('li').get(0).offsetTop;
}
break;
case 13:
// select
list.find('a.hover').trigger('select');
break;
default:
character = String.fromCharCode(event.which);
window.dropp_key_cache.cache += character;
found_index = null;
for (option_index = 0; option_index < list_of_contents.length; option_index += 1) {
cursor_pattern = new RegExp(window.dropp_key_cache.cache.toLowerCase());
if (cursor_pattern.test(list_of_contents[option_index])) {
found_index = option_index;
break;
}
}
if (found_index !== null) {
found_item = list.find('li:eq(' + found_index.toString() + ') a');
is_scrollable = list.get(0).scrollHeight > list.height();
if (is_scrollable) {
found_item.closest('ul').get(0).scrollTop = found_item.closest('li').get(0).offsetTop;
}
list.find('li a.hover').removeClass('hover');
found_item.addClass('hover');
}
break;
}
window.dropp_key_cache.timeout = setTimeout(function () {
window.dropp_key_cache.cache = '';
}, 400);
return false;
});
}
// Each loop ends here
if (select.find('option:selected').length === 0) {
if (typeof select.attr('placeholder') !== 'undefined') {
dropdown.text(select.attr('placeholder'));
} else {
dropdown.html(' ');
}
} else {
if (typeof select.attr('multiple') !== undefined && (select.attr('multiple') === true || select.attr('multiple') === 'multiple')) {
values = [];
select.find('option:selected').each(function () {
values.push($(this).text());
});
dropdown.html(values.join(', '));
} else {
dropdown.text($(this).find('option:selected').text());
}
}
dropdown.click(function () {
var list_data;
if (list.is(':visible')) {
list.hide();
dropdown.removeClass(settings.class_active_dropdown);
$('ul.dropp_dropdown_list').hide();
} else {
$('ul.dropp_dropdown_list').hide();
list.show();
dropdown.addClass(settings.class_active_dropdown);
// manage dropdown width
// check the cached width
list_data = select.data('dropp');
if (list_data.cached_width !== dropdown.outerWidth() ) {
list_width = dropdown.outerWidth();
if (settings.substract_list_border_width) {
list_width -= (parseInt(list.css('borderLeftWidth'), 10) + parseInt(list.css('borderRightWidth'), 10));
}
list.css('min-width', list_width);
// Check for IE and apply a hack here for min-width problems
if ($.browser.msie && $.browser.version === '6.0') {
// Look for the widest option
list.find('a').each(function () {
if (widest_element === null || widest_element.width() < $(this).width()) {
widest_element = $(this);
}
});
if (widest_element.width() > list_width) {
list.width(widest_element.width());
} else {
list.width(list_width);
}
}
// write cached width
list_data.cached_width = dropdown.outerWidth();
list.data('dropp', list_data);
}
}
return false;
});
// end of loop
});
};
}(jQuery));