ui.multiselect.js
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/*
* jQuery UI Multiselect
*
* Authors:
* Michael Aufreiter (quasipartikel.at)
* Yanick Rochon (yanick.rochon[at]gmail[dot]com)
*
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*
* http://www.quasipartikel.at/multiselect/
*
*
* Depends:
* ui.core.js
* ui.sortable.js
*
* Optional:
* localization (http://plugins.jquery.com/project/localisation)
* scrollTo (http://plugins.jquery.com/project/ScrollTo)
*
* Todo:
* Make batch actions faster
* Implement dynamic insertion through remote calls
*/
(function ($) {
$.widget("ui.multiselect", {
_init: function () {
this.element.hide();
this.id = this.element.attr("id");
this.container = $('<div class="ui-multiselect ui-helper-clearfix ui-widget"></div>').insertAfter(this.element);
this.count = 0; // number of currently selected options
this.selectedContainer = $('<div class="selected"></div>').appendTo(this.container);
this.availableContainer = $('<div class="available"></div>').appendTo(this.container);
this.selectedActions = $('<div class="actions ui-widget-header ui-helper-clearfix"><span class="count">0 ' + $.ui.multiselect.locale.itemsCount + '</span><a href="#" class="remove-all">' + $.ui.multiselect.locale.removeAll + '</a></div>').appendTo(this.selectedContainer);
this.availableActions = $('<div class="actions ui-widget-header ui-helper-clearfix"><input type="text" class="search empty ui-widget-content ui-corner-all"/><a href="#" class="add-all">' + $.ui.multiselect.locale.addAll + '</a></div>').appendTo(this.availableContainer);
this.selectedList = $('<ul class="selected connected-list"><li class="ui-helper-hidden-accessible"></li></ul>').bind('selectstart',function () {
return false;
}).appendTo(this.selectedContainer);
this.availableList = $('<ul class="available connected-list"><li class="ui-helper-hidden-accessible"></li></ul>').bind('selectstart',function () {
return false;
}).appendTo(this.availableContainer);
var that = this;
// set dimensions
this.container.width(this.element.width() + 1);
this.selectedContainer.width(Math.floor(this.element.width() * this.options.dividerLocation));
this.availableContainer.width(Math.floor(this.element.width() * (1 - this.options.dividerLocation)));
// fix list height to match <option> depending on their individual header's heights
this.selectedList.height(Math.max(this.element.height() - this.selectedActions.height(), 1));
this.availableList.height(Math.max(this.element.height() - this.availableActions.height(), 1));
if (!this.options.animated) {
this.options.show = 'show';
this.options.hide = 'hide';
}
// init lists
this._populateLists(this.element.find('option'));
// make selection sortable
if (this.options.sortable) {
$("ul.selected").sortable({
placeholder: 'ui-state-highlight',
axis: 'y',
update: function (event, ui) {
// apply the new sort order to the original selectbox
that.selectedList.find('li').each(function () {
if ($(this).data('optionLink'))
$(this).data('optionLink').remove().appendTo(that.element);
});
},
receive: function (event, ui) {
ui.item.data('optionLink').attr('selected', true);
// increment count
that.count += 1;
that._updateCount();
// workaround, because there's no way to reference
// the new element, see http://dev.jqueryui.com/ticket/4303
that.selectedList.children('.ui-draggable').each(function () {
$(this).removeClass('ui-draggable');
$(this).data('optionLink', ui.item.data('optionLink'));
$(this).data('idx', ui.item.data('idx'));
that._applyItemState($(this), true);
});
// workaround according to http://dev.jqueryui.com/ticket/4088
setTimeout(function () {
ui.item.remove();
}, 1);
}
});
}
// set up livesearch
if (this.options.searchable) {
this._registerSearchEvents(this.availableContainer.find('input.search'));
} else {
$('.search').hide();
}
// batch actions
$(".remove-all").click(function () {
that._populateLists(that.element.find('option').removeAttr('selected'));
return false;
});
$(".add-all").click(function () {
that._populateLists(that.element.find('option').attr('selected', 'selected'));
return false;
});
},
destroy: function () {
this.element.show();
this.container.remove();
$.widget.prototype.destroy.apply(this, arguments);
},
_populateLists: function (options) {
this.selectedList.children('.ui-element').remove();
this.availableList.children('.ui-element').remove();
this.count = 0;
var that = this;
var items = $(options.map(function (i) {
var item = that._getOptionNode(this).appendTo(this.selected ? that.selectedList : that.availableList).show();
if (this.selected) that.count += 1;
that._applyItemState(item, this.selected);
item.data('idx', i);
return item[0];
}));
// update count
this._updateCount();
},
_updateCount: function () {
this.selectedContainer.find('span.count').text(this.count + " " + $.ui.multiselect.locale.itemsCount);
},
_getOptionNode: function (option) {
option = $(option);
var node = $('<li class="ui-state-default ui-element" title="' + option.text() + '"><span class="ui-icon"/>' + option.text() + '<a href="#" class="action"><span class="ui-corner-all ui-icon"/></a></li>').hide();
node.data('optionLink', option);
return node;
},
// clones an item with associated data
// didn't find a smarter away around this
_cloneWithData: function (clonee) {
var clone = clonee.clone();
clone.data('optionLink', clonee.data('optionLink'));
clone.data('idx', clonee.data('idx'));
return clone;
},
_setSelected: function (item, selected) {
item.data('optionLink').attr('selected', selected);
if (selected) {
var selectedItem = this._cloneWithData(item);
item[this.options.hide](this.options.animated, function () {
$(this).remove();
});
selectedItem.appendTo(this.selectedList).hide()[this.options.show](this.options.animated);
this._applyItemState(selectedItem, true);
return selectedItem;
} else {
// look for successor based on initial option index
var items = this.availableList.find('li'), comparator = this.options.nodeComparator;
var succ = null, i = item.data('idx'), direction = comparator(item, $(items[i]));
// TODO: test needed for dynamic list populating
if (direction) {
while (i >= 0 && i < items.length) {
direction > 0 ? i++ : i--;
if (direction != comparator(item, $(items[i]))) {
// going up, go back one item down, otherwise leave as is
succ = items[direction > 0 ? i : i + 1];
break;
}
}
} else {
succ = items[i];
}
var availableItem = this._cloneWithData(item);
succ ? availableItem.insertBefore($(succ)) : availableItem.appendTo(this.availableList);
item[this.options.hide](this.options.animated, function () {
$(this).remove();
});
availableItem.hide()[this.options.show](this.options.animated);
this._applyItemState(availableItem, false);
return availableItem;
}
},
_applyItemState: function (item, selected) {
if (selected) {
if (this.options.sortable)
item.children('span').addClass('ui-icon-arrowthick-2-n-s').removeClass('ui-helper-hidden').addClass('ui-icon');
else
item.children('span').removeClass('ui-icon-arrowthick-2-n-s').addClass('ui-helper-hidden').removeClass('ui-icon');
item.find('a.action span').addClass('ui-icon-minus').removeClass('ui-icon-plus');
this._registerRemoveEvents(item.find('a.action'));
} else {
item.children('span').removeClass('ui-icon-arrowthick-2-n-s').addClass('ui-helper-hidden').removeClass('ui-icon');
item.find('a.action span').addClass('ui-icon-plus').removeClass('ui-icon-minus');
this._registerAddEvents(item.find('a.action'));
}
this._registerHoverEvents(item);
},
// taken from John Resig's liveUpdate script
_filter: function (list) {
var input = $(this);
var rows = list.children('li'),
cache = rows.map(function () {
return $(this).text().toLowerCase();
});
var term = $.trim(input.val().toLowerCase()), scores = [];
if (!term) {
rows.show();
} else {
rows.hide();
cache.each(function (i) {
if (this.indexOf(term) > -1) {
scores.push(i);
}
});
$.each(scores, function () {
$(rows[this]).show();
});
}
},
_registerHoverEvents: function (elements) {
elements.removeClass('ui-state-hover');
elements.mouseover(function () {
$(this).addClass('ui-state-hover');
});
elements.mouseout(function () {
$(this).removeClass('ui-state-hover');
});
},
_registerAddEvents: function (elements) {
var that = this;
elements.click(function () {
var item = that._setSelected($(this).parent(), true);
that.count += 1;
that._updateCount();
return false;
})
// make draggable
.each(function () {
$(this).parent().draggable({
connectToSortable: 'ul.selected',
helper: function () {
var selectedItem = that._cloneWithData($(this)).width($(this).width() - 50);
selectedItem.width($(this).width());
return selectedItem;
},
appendTo: '.ui-multiselect',
containment: '.ui-multiselect',
revert: 'invalid'
});
});
},
_registerRemoveEvents: function (elements) {
var that = this;
elements.click(function () {
that._setSelected($(this).parent(), false);
that.count -= 1;
that._updateCount();
return false;
});
},
_registerSearchEvents: function (input) {
var that = this;
input.focus(function () {
$(this).addClass('ui-state-active');
})
.blur(function () {
$(this).removeClass('ui-state-active');
})
.keypress(function (e) {
if (e.keyCode == 13)
return false;
})
.keyup(function () {
that._filter.apply(this, [that.availableList]);
});
}
});
$.extend($.ui.multiselect, {
defaults: {
sortable: true,
searchable: true,
animated: 'fast',
show: 'slideDown',
hide: 'slideUp',
dividerLocation: 0.6,
nodeComparator: function (node1, node2) {
var text1 = node1.text(),
text2 = node2.text();
return text1 == text2 ? 0 : (text1 < text2 ? -1 : 1);
}
},
locale: {
addAll: 'Add all',
removeAll: 'Remove all',
itemsCount: 'items selected'
}
});
})(jQuery);