')
.appendTo(this.header);
var checkboxContainer = (this.checkboxContainer = $('
'))
.addClass('ui-multiselect-checkboxes ui-helper-reset')
.appendTo(this.menu);
// perform event bindings
this._bindEvents();
// build menu
this.refresh(true);
// some addl. logic for single selects
if(!o.multiple) {
this.menu.addClass('ui-multiselect-single');
}
el.hide();
},
_init: function() {
if(this.options.header === false) {
this.header.hide();
}
if(!this.options.multiple) {
this.headerLinkContainer.find('.ui-multiselect-all, .ui-multiselect-none').hide();
} else {
this.headerLinkContainer.find('.ui-multiselect-all, .ui-multiselect-none').show();
}
if(this.options.autoOpen) {
this.open();
}
if(this.element.is(':disabled')) {
this.disable();
}
},
_makeOption: function(option) {
var title = option.title ? option.title : null;
var value = option.value;
var id = this.element.attr('id') || this.multiselectID; // unique ID for the label & option tags
var inputID = 'ui-multiselect-' + this.multiselectID + '-' + (option.id || id + '-option-' + this.inputIdCounter++);
var isDisabled = option.disabled;
var isSelected = option.selected;
var labelClasses = [ 'ui-corner-all' ];
var liClasses = [];
var o = this.options;
if(isDisabled) {
liClasses.push('ui-multiselect-disabled');
labelClasses.push('ui-state-disabled');
}
if(option.className) {
liClasses.push(option.className);
}
if(isSelected && !o.multiple) {
labelClasses.push('ui-state-active');
}
var $item = $("").addClass(liClasses.join(' '));
var $label = $("").attr({
"for": inputID,
"title": title
}).addClass(labelClasses.join(' ')).appendTo($item);
var $input = $("").attr({
"name": "multiselect_" + id,
"type": o.multiple ? "checkbox" : "radio",
"value": value,
"title": title,
"id": inputID,
"checked": isSelected ? "checked" : null,
"aria-selected": isSelected ? "true" : null,
"disabled": isDisabled ? "disabled" : null,
"aria-disabled": isDisabled ? "true" : null
}).data($(option).data()).appendTo($label);
$("").text($(option).text()).appendTo($label);
return $item;
},
_buildOptionList: function(element, $appendTo) {
var self = this;
element.children().each(function() {
var $this = $(this);
if(this.tagName === 'OPTGROUP') {
var $optionGroup = $("
").addClass('ui-multiselect-optgroup ' + this.className).appendTo($appendTo);
if(self.options.groupColumns) {
$optionGroup.addClass("ui-multiselect-columns");
}
$("").text(this.getAttribute('label')).appendTo($optionGroup);
self._buildOptionList($this, $optionGroup);
} else {
var $listItem = self._makeOption(this).appendTo($appendTo);
}
});
},
refresh: function(init) {
var self = this;
var el = this.element;
var o = this.options;
var menu = this.menu;
var checkboxContainer = this.checkboxContainer;
var html = "";
var $dropdown = $("
").addClass('ui-multiselect-checkboxes ui-helper-reset');
this.inputIdCounter = 0;
// update header link container visibility if needed
if (this.options.header) {
if(!this.options.multiple) {
this.headerLinkContainer.find('.ui-multiselect-all, .ui-multiselect-none').hide();
} else {
this.headerLinkContainer.find('.ui-multiselect-all, .ui-multiselect-none').show();
}
}
this._buildOptionList(el, $dropdown);
this.menu.find(".ui-multiselect-checkboxes").remove();
this.menu.append($dropdown);
// cache some moar useful elements
this.labels = menu.find('label');
this.inputs = this.labels.children('input');
this._setButtonWidth();
this.update(true);
// broadcast refresh event; useful for widgets
if(!init) {
this._trigger('refresh');
}
},
// updates the button text. call refresh() to rebuild
update: function(isDefault) {
var o = this.options;
var $inputs = this.inputs;
var $checked = $inputs.filter(':checked');
var numChecked = $checked.length;
var value;
if(numChecked === 0) {
value = o.noneSelectedText;
} else {
if($.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().text(); }).get().join(o.selectedListSeparator);
} else {
value = o.selectedText.replace('#', numChecked).replace('#', $inputs.length);
}
}
this._setButtonValue(value);
if(isDefault) {
this.button[0].defaultValue = value;
}
},
// this exists as a separate method so that the developer
// can easily override it.
_setButtonValue: function(value) {
this.buttonlabel.text(value);
},
_bindButtonEvents: 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')
.bind('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');
}
});
},
_bindMenuEvents: function() {
var self = this;
// optgroup label toggle support
this.menu.delegate('.ui-multiselect-optgroup a', 'click.multiselect', function(e) {
e.preventDefault();
var $this = $(this);
var $inputs = $this.parent().find('input:visible:not(:disabled)');
var nodes = $inputs.get();
var label = $this.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,
$inputs
);
self._trigger('optgrouptoggle', e, {
inputs: nodes,
label: label,
checked: nodes.length ? nodes[0].checked : null
});
})
.delegate('label', 'mouseenter.multiselect', function() {
if(!$(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) {
if(e.which === 82) {
return; //"r" key, often used for reload.
}
if(e.which > 111 && e.which < 124) {
return; //Keyboard function keys.
}
e.preventDefault();
switch(e.which) {
case 9: // tab
if(e.shiftKey) {
self.menu.find(".ui-state-hover").removeClass("ui-state-hover");
self.header.find("li").last().find("a").focus();
} else {
self.close();
}
break;
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
case 32:
$(this).find('input')[0].click();
break;
case 65:
if(e.altKey) {
self.checkAll();
}
break;
case 85:
if(e.altKey) {
self.uncheckAll();
}
break;
}
})
.delegate('input[type="checkbox"], input[type="radio"]', 'click.multiselect', function(e) {
var $this = $(this);
var val = this.value;
var optionText = $this.parent().find("span").text();
var checked = this.checked;
var tags = self.element.find('option');
// bail if this input is disabled or the event is cancelled
if(this.disabled || self._trigger('click', e, { value: val, text: optionText, 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.prop('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);
});
},
_bindHeaderEvents: function() {
var self = this;
// header links
this.header.delegate('a', 'click.multiselect', function(e) {
var $this = $(this);
if($this.hasClass('ui-multiselect-close')) {
self.close();
} else if($this.hasClass("ui-multiselect-all")) {
self.checkAll();
} else if($this.hasClass("ui-multiselect-none")) {
self.uncheckAll();
}
e.preventDefault();
}).delegate('a', 'keydown.multiselect', function(e) {
switch(e.which) {
case 27:
self.close();
break;
case 9:
var $target = $(e.target);
if((e.shiftKey && !$target.parent().prev().length && !self.header.find(".ui-multiselect-filter").length) || (!$target.parent().next().length && !self.labels.length && !e.shiftKey)) {
self.close();
e.preventDefault();
}
break;
}
});
},
// binds events
_bindEvents: function() {
var self = this;
this._bindButtonEvents();
this._bindMenuEvents();
this._bindHeaderEvents();
// close each widget when clicking on any other element/anywhere else on the page
$doc.bind('mousedown.' + self._namespaceID, function(event) {
var target = event.target;
if(self._isOpen &&
target !== self.button[0] &&
target !== self.menu[0] &&
!$.contains(self.menu[0], target) &&
!$.contains(self.button[0], target)
) {
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.
$(this.element[0].form).bind('reset.' + this._namespaceID, function() {
setTimeout($.proxy(self.refresh, self), 10);
});
},
_getMinWidth: function() {
var minVal = this.options.minWidth;
var width = 0;
switch (typeof minVal) {
case 'number':
width = minVal;
break;
case 'string':
var lastChar = minVal[ minVal.length -1 ];
width = minVal.match(/\d+/);
if(lastChar === '%') {
width = this.element.parent().outerWidth() * (width/100);
} else {
width = parseInt(minVal, 10);
}
break;
}
return width;
},
// set button width
_setButtonWidth: function() {
var width = this.element.outerWidth();
var minVal = this._getMinWidth();
if(width < minVal) {
width = minVal;
}
// set widths
this.button.outerWidth(width);
},
// set menu width
_setMenuWidth: function() {
var m = this.menu;
var width = (this.button.outerWidth() <= 0) ? this._getMinWidth() : this.button.outerWidth();
m.outerWidth(this.options.menuWidth || width);
},
_setMenuHeight: function() {
var headerHeight = this.menu.children(".ui-multiselect-header:visible").outerHeight(true);
var ulHeight = 0;
this.menu.find(".ui-multiselect-checkboxes li, .ui-multiselect-checkboxes a").each(function(idx, li) {
ulHeight += $(li).outerHeight(true);
});
if(ulHeight > this.options.height) {
this.menu.children(".ui-multiselect-checkboxes").css("overflow", "auto");
ulHeight = this.options.height;
} else {
this.menu.children(".ui-multiselect-checkboxes").css("overflow", "hidden");
}
this.menu.children(".ui-multiselect-checkboxes").height(ulHeight);
this.menu.height(ulHeight + headerHeight);
},
_resizeMenu: function() {
this._setMenuWidth();
this._setMenuHeight();
},
// 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
var $next = $start.parent()[moveToLast ? 'prevAll' : 'nextAll']('li:not(.ui-multiselect-disabled, .ui-multiselect-optgroup):visible').first();
// we might have to jump to the next/previous option group
if(!$next.length) {
$next = $start.parents(".ui-multiselect-optgroup")[moveToLast ? "prev" : "next" ]();
}
// if at the first/last element
if(!$next.length) {
var $container = this.menu.find('ul').last();
// move to the first/last
this.menu.find('label:visible')[ moveToLast ? 'last' : 'first' ]().trigger('mouseover');
// set scroll position
$container.scrollTop(moveToLast ? $container.height() : 0);
} else {
$next.find('label:visible')[ moveToLast ? "last" : "first" ]().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 = {};
$inputs.each(function() {
values[this.value] = true;
});
// toggle state on original option tags
this.element
.find('option')
.each(function() {
if(!this.disabled && values[this.value]) {
self._toggleState('selected', flag).call(this);
}
});
// trigger the change event on the select
if($inputs.length) {
this.element.trigger("change");
}
},
_toggleDisabled: function(flag) {
this.button.prop({ 'disabled':flag, 'aria-disabled':flag })[ flag ? 'addClass' : 'removeClass' ]('ui-state-disabled');
if(this.options.disableInputsOnToggle) {
var checkboxes = this.menu.find(".ui-multiselect-checkboxes").get(0);
var matchedInputs = [];
var key = "ech-multiselect-disabled";
var i = 0;
if(flag) {
// remember which elements this widget disabled (not pre-disabled)
// elements, so that they can be restored if the widget is re-enabled.
matchedInputs = checkboxes.querySelectorAll("input:enabled");
for(i = 0; i < matchedInputs.length; i++) {
matchedInputs[i].setAttribute(key, true);
matchedInputs[i].setAttribute("disabled", "disabled");
matchedInputs[i].setAttribute("aria-disabled", "disabled");
matchedInputs[i].parentNode.className = matchedInputs[i].parentNode.className + " ui-state-disabled";
}
} else {
matchedInputs = checkboxes.querySelectorAll("input:disabled");
for(i = 0; i < matchedInputs.length; i++) {
if(matchedInputs[i].hasAttribute(key)) {
matchedInputs[i].removeAttribute(key);
matchedInputs[i].removeAttribute("disabled");
matchedInputs[i].removeAttribute("aria-disabled");
matchedInputs[i].parentNode.className = matchedInputs[i].parentNode.className.replace(" ui-state-disabled", "");
}
}
}
}
this.element.prop({
'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
if(this._trigger('beforeopen') === false || button.hasClass('ui-state-disabled') || this._isOpen) {
return;
}
var $container = menu.find('.ui-multiselect-checkboxes');
var effect = o.show;
// figure out opening effects/speeds
if($.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()
if(effect) {
args = [ effect, speed ];
}
// set the scroll of the checkbox container
$container.scrollTop(0);
// show the menu, maybe with a speed/effect combo
$.fn.show.apply(menu, args);
this._resizeMenu();
// positon
this.position();
// select the first not disabled option or the filter input if available
var filter = this.header.find(".ui-multiselect-filter");
if(filter.length) {
filter.first().find('input').trigger('focus');
} else if(this.labels.length){
this.labels.filter(':not(.ui-state-disabled)').eq(0).trigger('mouseover').trigger('mouseenter').find('input').trigger('focus');
} else {
this.header.find('a').first().trigger('focus');
}
button.addClass('ui-state-active');
this._isOpen = true;
this._trigger('open');
},
// close the menu
close: function() {
if(this._trigger('beforeclose') === false) {
return;
}
var o = this.options;
var effect = o.hide;
var speed = this.speed;
var args = [];
// figure out opening effects/speeds
if($.isArray(o.hide)) {
effect = o.hide[0];
speed = o.hide[1] || this.speed;
}
if(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');
this.button.trigger('focus');
},
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');
},
getUnchecked: function() {
return this.menu.find('input').not(':checked');
},
destroy: function() {
// remove classes + data
$.Widget.prototype.destroy.call(this);
// unbind events
$doc.unbind(this._namespaceID);
$(this.element[0].form).unbind(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;
},
getMenu: function() {
return this.menu;
},
getLabels: function() {
return this.labels;
},
addOption: function(attributes, text, groupLabel) {
var $option = $("").attr(attributes).text(text);
var optionNode = $option.get(0);
if(groupLabel) {
this.element.children("OPTGROUP").filter(function() {
return $(this).prop("label") === groupLabel;
}).append($option);
this.menu.find(".ui-multiselect-optgroup").filter(function() {
return $(this).find("a").text() === groupLabel;
}).append(this._makeOption(optionNode));
} else {
this.element.append($option);
this.menu.find(".ui-multiselect-checkboxes").append(this._makeOption(optionNode));
}
//update cached elements
this.labels = this.menu.find('label');
this.inputs = this.labels.children('input');
},
removeOption: function(value) {
if(!value) {
return;
}
this.element.find("option[value=" + value + "]").remove();
this.labels.find("input[value=" + value + "]").parents("li").remove();
//update cached elements
this.labels = this.menu.find('label');
this.inputs = this.labels.children('input');
},
position: function() {
var pos = {
my: "top",
at: "bottom",
of: this.button
};
if(!$.isEmptyObject(this.options.position)) {
pos.my = this.options.position.my || pos.my;
pos.at = this.options.position.at || pos.at;
pos.of = this.options.position.of || pos.of;
}
if($.ui && $.ui.position) {
this.menu.position(pos);
} else {
pos = this.button.position();
pos.top += this.button.outerHeight(false);
this.menu.offset(pos);
}
},
// react to option changes after initialization
_setOption: function(key, value) {
var menu = this.menu;
switch(key) {
case 'header':
if(typeof value === 'boolean') {
this.header[value ? 'show' : 'hide']();
} else if(typeof value === 'string') {
this.headerLinkContainer.children("li:not(:last-child)").remove();
this.headerLinkContainer.prepend("
" + value + "
");
}
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':
this.options[key] = value;
this._setMenuHeight();
break;
case 'minWidth':
case 'menuWidth':
this.options[key] = value;
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.uncheckAll();
this.refresh();
break;
case 'position':
this.position();
break;
case 'selectedListSeparator':
this.options[key] = value;
this.update(true);
break;
}
$.Widget.prototype._setOption.apply(this, arguments);
}
});
})(jQuery);