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* jQuery MultiSelect UI ImportExport 1.14pre
* Copyright (c) 2012 Eric Hynds
*
* http://www.erichynds.com/jquery/jquery-ui-multiselect-widget/
*
* Depends:
* - jQuery 1.4.2+
* - jQuery UI 1.8 widget factory
*
* Optional:
* - jQuery UI effects
* - jQuery UI position utility
*
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*
*/
define(['jquery'], function ($) {
var multiselectID = 0;
var $doc = $(document);
$.widget("ech.multiselect", {
// default options
options: {
header: true,
height: 175,
minWidth: 225,
classes: '',
checkAllText: 'Check all',
uncheckAllText: 'Uncheck all',
noneSelectedText: 'Select options',
selectedText: '# selected',
selectedList: 0,
show: null,
hide: null,
autoOpen: false,
multiple: true,
position: {}
},
_create: function() {
var el = this.element.hide();
var o = this.options;
this.speed = $.fx.speeds._default; // default speed for effects
this._isOpen = false; // assume no
// create a unique namespace for events that the widget
// factory cannot unbind automatically. Use eventNamespace if on
// jQuery UI 1.9+, and otherwise fallback to a custom string.
this._namespaceID = this.eventNamespace || ('multiselect' + multiselectID);
var button = (this.button = $('<button type="button"><span class="ui-icon ui-icon-triangle-1-s"></span></button>'))
.addClass('ui-multiselect ui-widget ui-state-default ui-corner-all')
.addClass(o.classes)
.attr({ 'title':el.attr('title'), 'aria-haspopup':true, 'tabIndex':el.attr('tabIndex') })
.insertAfter(el),
buttonlabel = (this.buttonlabel = $('<span />'))
.html(o.noneSelectedText)
.appendTo(button),
menu = (this.menu = $('<div />'))
.addClass('ui-multiselect-menu ui-widget ui-widget-content ui-corner-all')
.addClass(o.classes)
.appendTo(document.body),
header = (this.header = $('<div />'))
.addClass('ui-widget-header ui-corner-all ui-multiselect-header ui-helper-clearfix')
.appendTo(menu),
headerLinkContainer = (this.headerLinkContainer = $('<ul />'))
.addClass('ui-helper-reset')
.html(function() {
Eif(o.header === true) {
return '<li><a class="ui-multiselect-all" href="#"><span class="ui-icon ui-icon-check"></span><span>' + o.checkAllText + '</span></a></li><li><a class="ui-multiselect-none" href="#"><span class="ui-icon ui-icon-closethick"></span><span>' + o.uncheckAllText + '</span></a></li>';
} else if(typeof o.header === "string") {
return '<li>' + o.header + '</li>';
} else {
return '';
}
})
.append('<li class="ui-multiselect-close"><a href="#" class="ui-multiselect-close"><span class="ui-icon ui-icon-circle-close"></span></a></li>')
.appendTo(header),
checkboxContainer = (this.checkboxContainer = $('<ul />'))
.addClass('ui-multiselect-checkboxes ui-helper-reset')
.appendTo(menu);
// perform event bindings
this._bindEvents();
// build menu
this.refresh(true);
// some addl. logic for single selects
if(!o.multiple) {
menu.addClass('ui-multiselect-single');
}
// bump unique ID
multiselectID++;
},
_init: function() {
Iif(this.options.header === false) {
this.header.hide();
}
if(!this.options.multiple) {
this.headerLinkContainer.find('.ui-multiselect-all, .ui-multiselect-none').hide();
}
Iif(this.options.autoOpen) {
this.open();
}
Iif(this.element.is(':disabled')) {
this.disable();
}
},
refresh: function(init) {
var el = this.element;
var o = this.options;
var menu = this.menu;
var checkboxContainer = this.checkboxContainer;
var optgroups = [];
var html = "";
var id = el.attr('id') || multiselectID++; // unique ID for the label & option tags
// build items
el.find('option').each(function(i) {
var $this = $(this);
var parent = this.parentNode;
var title = this.innerHTML;
var description = this.title;
var value = this.value;
var inputID = 'ui-multiselect-' + (this.id || id + '-option-' + i);
var isDisabled = this.disabled;
var isSelected = this.selected;
var labelClasses = [ 'ui-corner-all' ];
var liClasses = (isDisabled ? 'ui-multiselect-disabled ' : ' ') + this.className;
var optLabel;
// is this an optgroup?
if(parent.tagName === 'OPTGROUP') {
optLabel = parent.getAttribute('label');
// has this optgroup been added already?
if($.inArray(optLabel, optgroups) === -1) {
html += '<li class="ui-multiselect-optgroup-label ' + parent.className + '"><a href="#">' + optLabel + '</a></li>';
optgroups.push(optLabel);
}
}
Iif(isDisabled) {
labelClasses.push('ui-state-disabled');
}
// browsers automatically select the first option
// by default with single selects
if(isSelected && !o.multiple) {
labelClasses.push('ui-state-active');
}
html += '<li class="' + liClasses + '">';
// create the label
html += '<label for="' + inputID + '" title="' + description + '" class="' + labelClasses.join(' ') + '">';
html += '<input id="' + inputID + '" name="multiselect_' + id + '" type="' + (o.multiple ? "checkbox" : "radio") + '" value="' + value + '" title="' + title + '"';
// pre-selected?
if(isSelected) {
html += ' checked="checked"';
html += ' aria-selected="true"';
}
// disabled?
Iif(isDisabled) {
html += ' disabled="disabled"';
html += ' aria-disabled="true"';
}
// add the title and close everything off
html += ' /><span>' + title + '</span></label></li>';
});
// insert into the DOM
checkboxContainer.html(html);
// cache some moar useful elements
this.labels = menu.find('label');
this.inputs = this.labels.children('input');
// set widths
this._setButtonWidth();
this._setMenuWidth();
// remember default value
this.button[0].defaultValue = this.update();
// broadcast refresh event; useful for widgets
if(!init) {
this._trigger('refresh');
}
},
// updates the button text. call refresh() to rebuild
update: function() {
var o = this.options;
var $inputs = this.inputs;
var $checked = $inputs.filter(':checked');
var numChecked = $checked.length;
var value;
Iif(numChecked === 0) {
value = o.noneSelectedText;
} else {
Eif($.isFunction(o.selectedText)) {
value = o.selectedText.call(this, numChecked, $inputs.length, $checked.get());
} else if(/\d/.test(o.selectedList) && o.selectedList > 0 && numChecked <= o.selectedList) {
value = $checked.map(function() { return $(this).next().html(); }).get().join(', ');
} else {
value = o.selectedText.replace('#', numChecked).replace('#', $inputs.length);
}
}
this._setButtonValue(value);
return value;
},
// this exists as a separate method so that the developer
// can easily override it.
_setButtonValue: function(value) {
this.buttonlabel.text(value);
},
// binds events
_bindEvents: function() {
var self = this;
var button = this.button;
function clickHandler() {
self[ self._isOpen ? 'close' : 'open' ]();
return false;
}
// webkit doesn't like it when you click on the span :(
button
.find('span')
.on('click.multiselect', clickHandler);
// button events
button.bind({
click: clickHandler,
keypress: function(e) {
switch(e.which) {
case 27: // esc
case 38: // up
case 37: // left
self.close();
break;
case 39: // right
case 40: // down
self.open();
break;
}
},
mouseenter: function() {
if(!button.hasClass('ui-state-disabled')) {
$(this).addClass('ui-state-hover');
}
},
mouseleave: function() {
$(this).removeClass('ui-state-hover');
},
focus: function() {
if(!button.hasClass('ui-state-disabled')) {
$(this).addClass('ui-state-focus');
}
},
blur: function() {
$(this).removeClass('ui-state-focus');
}
});
// header links
this.header.delegate('a', 'click.multiselect', function(e) {
// close link
if($(this).hasClass('ui-multiselect-close')) {
self.close();
// check all / uncheck all
} else {
self[$(this).hasClass('ui-multiselect-all') ? 'checkAll' : 'uncheckAll']();
}
e.preventDefault();
});
// optgroup label toggle support
this.menu.delegate('li.ui-multiselect-optgroup-label a', 'click.multiselect', function(e) {
e.preventDefault();
var $this = $(this);
var $inputs = $this.parent().nextUntil('li.ui-multiselect-optgroup-label').find('input:visible:not(:disabled)');
var nodes = $inputs.get();
var label = $this.parent().text();
// trigger event and bail if the return is false
if(self._trigger('beforeoptgrouptoggle', e, { inputs:nodes, label:label }) === false) {
return;
}
// toggle inputs
self._toggleChecked(
$inputs.filter(':checked').length !== $inputs.length,
$inputs
);
self._trigger('optgrouptoggle', e, {
inputs: nodes,
label: label,
checked: nodes[0].checked
});
})
.delegate('label', 'mouseenter.multiselect', function() {
Eif(!$(this).hasClass('ui-state-disabled')) {
self.labels.removeClass('ui-state-hover');
$(this).addClass('ui-state-hover').find('input').focus();
}
})
.delegate('label', 'keydown.multiselect', function(e) {
e.preventDefault();
switch(e.which) {
case 9: // tab
case 27: // esc
self.close();
break;
case 38: // up
case 40: // down
case 37: // left
case 39: // right
self._traverse(e.which, this);
break;
case 13: // enter
$(this).find('input')[0].click();
break;
}
})
.delegate('input[type="checkbox"], input[type="radio"]', 'click.multiselect', function(e) {
var $this = $(this);
var val = this.value;
var checked = this.checked;
var tags = self.element.find('option');
// bail if this input is disabled or the event is cancelled
Iif(this.disabled || self._trigger('click', e, { value: val, text: this.title, checked: checked }) === false) {
e.preventDefault();
return;
}
// make sure the input has focus. otherwise, the esc key
// won't close the menu after clicking an item.
$this.focus();
// toggle aria state
$this.attr('aria-selected', checked);
// change state on the original option tags
tags.each(function() {
if(this.value === val) {
this.selected = checked;
} else if(!self.options.multiple) {
this.selected = false;
}
});
// some additional single select-specific logic
if(!self.options.multiple) {
self.labels.removeClass('ui-state-active');
$this.closest('label').toggleClass('ui-state-active', checked);
// close menu
self.close();
}
// fire change on the select box
self.element.trigger("change");
// setTimeout is to fix multiselect issue #14 and #47. caused by jQuery issue #3827
// http://bugs.jquery.com/ticket/3827
setTimeout($.proxy(self.update, self), 10);
});
// close each widget when clicking on any other element/anywhere else on the page
$doc.on('mousedown.' + this._namespaceID, function(event) {
var target = event.target;
if(self._isOpen
&& !$.contains(self.menu[0], target)
&& !$.contains(self.button[0], target)
&& target !== self.button[0]
&& target !== self.menu[0])
{
self.close();
}
});
// deal with form resets. the problem here is that buttons aren't
// restored to their defaultValue prop on form reset, and the reset
// handler fires before the form is actually reset. delaying it a bit
// gives the form inputs time to clear.
$(this.element[0].form).on('reset.multiselect', function() {
setTimeout($.proxy(self.refresh, self), 10);
});
},
// set button width
_setButtonWidth: function() {
var width = this.element.outerWidth();
var o = this.options;
if(/\d/.test(o.minWidth) && width < o.minWidth) {
width = o.minWidth;
}
// set widths
this.button.outerWidth(width);
},
// set menu width
_setMenuWidth: function() {
var m = this.menu;
m.outerWidth(this.button.outerWidth());
},
// move up or down within the menu
_traverse: function(which, start) {
var $start = $(start);
var moveToLast = which === 38 || which === 37;
// select the first li that isn't an optgroup label / disabled
$next = $start.parent()[moveToLast ? 'prevAll' : 'nextAll']('li:not(.ui-multiselect-disabled, .ui-multiselect-optgroup-label)')[ moveToLast ? 'last' : 'first']();
// if at the first/last element
if(!$next.length) {
var $container = this.menu.find('ul').last();
// move to the first/last
this.menu.find('label')[ moveToLast ? 'last' : 'first' ]().trigger('mouseover');
// set scroll position
$container.scrollTop(moveToLast ? $container.height() : 0);
} else {
$next.find('label').trigger('mouseover');
}
},
// This is an internal function to toggle the checked property and
// other related attributes of a checkbox.
//
// The context of this function should be a checkbox; do not proxy it.
_toggleState: function(prop, flag) {
return function() {
if(!this.disabled) {
this[ prop ] = flag;
}
if(flag) {
this.setAttribute('aria-selected', true);
} else {
this.removeAttribute('aria-selected');
}
};
},
_toggleChecked: function(flag, group) {
var $inputs = (group && group.length) ? group : this.inputs;
var self = this;
// toggle state on inputs
$inputs.each(this._toggleState('checked', flag));
// give the first input focus
$inputs.eq(0).focus();
// update button text
this.update();
// gather an array of the values that actually changed
var values = $inputs.map(function() {
return this.value;
}).get();
// toggle state on original option tags
this.element
.find('option')
.each(function() {
if(!this.disabled && $.inArray(this.value, values) > -1) {
self._toggleState('selected', flag).call(this);
}
});
// trigger the change event on the select
if($inputs.length) {
this.element.trigger("change");
}
},
_toggleDisabled: function(flag) {
this.button.attr({ 'disabled':flag, 'aria-disabled':flag })[ flag ? 'addClass' : 'removeClass' ]('ui-state-disabled');
var inputs = this.menu.find('input');
var key = "ech-multiselect-disabled";
if(flag) {
// remember which elements this widget disabled (not pre-disabled)
// elements, so that they can be restored if the widget is re-enabled.
inputs = inputs.filter(':enabled').data(key, true)
} else {
inputs = inputs.filter(function() {
return $.data(this, key) === true;
}).removeData(key);
}
inputs
.attr({ 'disabled':flag, 'arial-disabled':flag })
.parent()[ flag ? 'addClass' : 'removeClass' ]('ui-state-disabled');
this.element.attr({
'disabled':flag,
'aria-disabled':flag
});
},
// open the menu
open: function(e) {
var self = this;
var button = this.button;
var menu = this.menu;
var speed = this.speed;
var o = this.options;
var args = [];
// bail if the multiselectopen event returns false, this widget is disabled, or is already open
Iif(this._trigger('beforeopen') === false || button.hasClass('ui-state-disabled') || this._isOpen) {
return;
}
var $container = menu.find('ul').last();
var effect = o.show;
// figure out opening effects/speeds
Iif($.isArray(o.show)) {
effect = o.show[0];
speed = o.show[1] || self.speed;
}
// if there's an effect, assume jQuery UI is in use
// build the arguments to pass to show()
Iif(effect) {
args = [ effect, speed ];
}
// set the scroll of the checkbox container
$container.scrollTop(0).height(o.height);
// positon
this.position();
// show the menu, maybe with a speed/effect combo
$.fn.show.apply(menu, args);
// select the first not disabled option
// triggering both mouseover and mouseover because 1.4.2+ has a bug where triggering mouseover
// will actually trigger mouseenter. the mouseenter trigger is there for when it's eventually fixed
this.labels.filter(':not(.ui-state-disabled)').eq(0).trigger('mouseover').trigger('mouseenter').find('input').trigger('focus');
button.addClass('ui-state-active');
this._isOpen = true;
this._trigger('open');
},
// close the menu
close: function() {
Iif(this._trigger('beforeclose') === false) {
return;
}
var o = this.options;
var effect = o.hide;
var speed = this.speed;
var args = [];
// figure out opening effects/speeds
Iif($.isArray(o.hide)) {
effect = o.hide[0];
speed = o.hide[1] || this.speed;
}
Iif(effect) {
args = [ effect, speed ];
}
$.fn.hide.apply(this.menu, args);
this.button.removeClass('ui-state-active').trigger('blur').trigger('mouseleave');
this._isOpen = false;
this._trigger('close');
},
enable: function() {
this._toggleDisabled(false);
},
disable: function() {
this._toggleDisabled(true);
},
checkAll: function(e) {
this._toggleChecked(true);
this._trigger('checkAll');
},
uncheckAll: function() {
this._toggleChecked(false);
this._trigger('uncheckAll');
},
getChecked: function() {
return this.menu.find('input').filter(':checked');
},
destroy: function() {
// remove classes + data
$.Widget.prototype.destroy.call(this);
// unbind events
$doc.off(this._namespaceID);
this.button.remove();
this.menu.remove();
this.element.show();
return this;
},
isOpen: function() {
return this._isOpen;
},
widget: function() {
return this.menu;
},
getButton: function() {
return this.button;
},
position: function() {
var o = this.options;
// use the position utility if it exists and options are specifified
Iif($.ui.position && !$.isEmptyObject(o.position)) {
o.position.of = o.position.of || this.button;
this.menu
.show()
.position(o.position)
.hide();
// otherwise fallback to custom positioning
} else {
var pos = this.button.offset();
this.menu.css({
top: pos.top + this.button.outerHeight(),
left: pos.left
});
}
},
// react to option changes after initialization
_setOption: function(key, value) {
var menu = this.menu;
switch(key) {
case 'header':
menu.find('div.ui-multiselect-header')[value ? 'show' : 'hide']();
break;
case 'checkAllText':
menu.find('a.ui-multiselect-all span').eq(-1).text(value);
break;
case 'uncheckAllText':
menu.find('a.ui-multiselect-none span').eq(-1).text(value);
break;
case 'height':
menu.find('ul').last().height(parseInt(value, 10));
break;
case 'minWidth':
this.options[key] = parseInt(value, 10);
this._setButtonWidth();
this._setMenuWidth();
break;
case 'selectedText':
case 'selectedList':
case 'noneSelectedText':
this.options[key] = value; // these all needs to update immediately for the update() call
this.update();
break;
case 'classes':
menu.add(this.button).removeClass(this.options.classes).addClass(value);
break;
case 'multiple':
menu.toggleClass('ui-multiselect-single', !value);
this.options.multiple = value;
this.element[0].multiple = value;
this.refresh();
break;
case 'position':
this.position();
}
$.Widget.prototype._setOption.apply(this, arguments);
}
});
});
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