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Copy pathkendo.listbox.js
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kendo.listbox.js
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import "./kendo.draganddrop.js";
import "./kendo.data.js";
import "./kendo.selectable.js";
import "./kendo.html.button.js";
export const __meta__ = {
id: "listbox",
name: "ListBox",
category: "web",
depends: ["draganddrop", "data", "selectable", 'html.button']
};
(function($, undefined) {
var kendo = window.kendo;
var kendoAttr = kendo.attr;
var data = kendo.data;
var keys = kendo.keys;
var kendoTemplate = kendo.template;
var Widget = kendo.ui.Widget;
var DataSource = data.DataSource;
var Selectable = kendo.ui.Selectable;
var DataBoundWidget = kendo.ui.DataBoundWidget;
var Class = kendo.Class;
var extend = $.extend;
var noop = $.noop;
var DASH = "-";
var DOT = ".";
var SPACE = " ";
var HASH = "#";
var KENDO_LISTBOX = "kendoListBox";
var NS = DOT + KENDO_LISTBOX;
var DISABLED_STATE_CLASS = "k-disabled";
var SELECTED_STATE_CLASS = "k-selected";
var ENABLED_ITEM_SELECTOR = ".k-list-item:not(.k-disabled)";
var ENABLED_ITEMS_SELECTOR = ".k-list-ul:not(.k-disabled) >" + ENABLED_ITEM_SELECTOR;
var TOOLBAR_CLASS = "k-listbox-actions";
var TOOL_SELECTOR = ".k-button";
var ENABLED_TOOL_SELECTOR = "button.k-button:not(.k-disabled)";
var FOCUSED_CLASS = "k-focus";
var DRAG_CLUE_CLASS = "k-drag-clue";
var DROP_HINT_CLASS = "k-drop-hint";
var LIST_CLASS = "k-list-ul";
var LIST_SELECTOR = ".k-list-ul";
var CLICK = "click" + NS;
var KEYDOWN = "keydown" + NS;
var BLUR = "blur" + NS;
var outerWidth = kendo._outerWidth;
var outerHeight = kendo._outerHeight;
var CHANGE = "change";
var DATABOUND = "dataBound";
var ADD = "add";
var REMOVE = "remove";
var REORDER = "reorder";
var MOVE_UP = "moveUp";
var MOVE_DOWN = "moveDown";
var TRANSFER_TO = "transferTo";
var TRANSFER_FROM = "transferFrom";
var TRANSFER_ALL_TO = "transferAllTo";
var TRANSFER_ALL_FROM = "transferAllFrom";
var CARET_ALT_RIGHT = "caret-alt-right";
var CARET_ALT_LEFT = "caret-alt-left";
var CARET_ALT_DOUBLE_RIGHT = "caret-double-alt-right";
var CARET_ALT_DOUBLE_LEFT = "caret-double-alt-left";
var DRAGGEDCLASS = "k-ghost";
var UNIQUE_ID = "uid";
var ID = "id";
var TABINDEX = "tabindex";
var COMMAND = "command";
var MOVE_UP_OFFSET = -1;
var MOVE_DOWN_OFFSET = 1;
var DRAGSTART = "dragstart";
var DRAG = "drag";
var DROP = "drop";
var DRAGEND = "dragend";
var DEFAULT_FILTER = "ul.k-list-ul>li.k-list-item";
var RIGHT = "right";
var BOTTOM = "bottom";
var ARIA_ACTIVEDESCENDENT = "aria-activedescendant";
var ARIA_BUSY = "aria-busy";
var ARIA_CONTROLS = "aria-controls";
var ARIA_LABEL = "aria-label";
var ARIA_LABELLEDBY = "aria-labelledby";
var ARIA_MULTISELECTABLE = "aria-multiselectable";
var TOOLBAR_POSITION_CLASS_NAMES = [
TOOLBAR_CLASS + DASH + "left",
TOOLBAR_CLASS + DASH + RIGHT,
TOOLBAR_CLASS + DASH + "top",
TOOLBAR_CLASS + DASH + BOTTOM
];
function getSortedDomIndices(items) {
var indices = $.map(items, function(item) {
return $(item).index();
});
return indices;
}
function isUndefined(value) {
return (typeof value === "undefined");
}
function defaultHint(element) {
return element.clone()
.attr('class', '')
.addClass(DRAG_CLUE_CLASS);
}
function defaultPlaceholder() {
return $('<li>').addClass(DROP_HINT_CLASS);
}
var ListBox = DataBoundWidget.extend({
init: function(element, options) {
var that = this;
Widget.fn.init.call(that, element, options);
that._wrapper();
that._list();
that._ariaLabel(that._getList());
element = that.element.attr("multiple", "multiple").hide();
if (element[0] && !that.options.dataSource) {
that.options.dataTextField = that.options.dataTextField || "text";
that.options.dataValueField = that.options.dataValueField || "value";
}
that._templates();
that._selectable();
that._dataSource();
that._createToolbar();
that._createDraggable();
that._createNavigatable();
},
destroy: function() {
var that = this;
DataBoundWidget.fn.destroy.call(that);
if (!isNaN(that._listTabIndex)) {
that._getList().off();
that._listTabIndex = null;
}
that._unbindDataSource();
that._destroySelectable();
that._destroyToolbar();
that.wrapper.off(NS);
if (that._target) {
that._target = null;
}
if (that._draggable) {
that._draggable.destroy();
that.placeholder = null;
}
kendo.destroy(that.element);
},
setOptions: function(options) {
Widget.fn.setOptions.call(this, options);
this._templates();
this._dataSource();
},
events: [
CHANGE,
DATABOUND,
ADD,
REMOVE,
REORDER,
DRAGSTART,
DRAG,
DROP,
DRAGEND
],
options: {
name: "ListBox",
autoBind: true,
template: "",
dataTextField: "",
dataValueField: "",
selectable: "single",
draggable: null,
dropSources: [],
connectWith: "",
navigatable: true,
toolbar: {
position: RIGHT,
tools: []
},
messages: {
tools: {
remove: "Delete",
moveUp: "Move Up",
moveDown: "Move Down",
transferTo: "Transfer To",
transferFrom: "Transfer From",
transferAllTo: "Transfer All To",
transferAllFrom: "Transfer All From"
}
}
},
add: function(dataItems) {
var that = this;
var items = dataItems && dataItems.length ? dataItems : [dataItems];
var itemsLength = items.length;
var list = that._getList();
var i;
that._unbindDataSource();
that._unbindDataChange();
for (i = 0; i < itemsLength; i++) {
that._addItem(items[i], list);
}
that._bindDataChange();
that._bindDataSource();
that._syncElement();
},
_addItem: function(dataItem, list) {
var that = this;
var item = $(that.templates.itemTemplate({ item: dataItem, r: that.templates.itemContent }));
that._setItemId(item, dataItem.uid);
item.appendTo(list);
if (typeof dataItem === typeof "") {
that.dataSource._data.push(dataItem);
} else {
that.dataSource.add(dataItem);
}
},
_addItemAt: function(dataItem, index) {
var that = this;
var item = $(that.templates.itemTemplate({ item: dataItem, r: that.templates.itemContent }));
that._unbindDataSource();
if (typeof dataItem === typeof "") {
that._insertElementAt(item, index);
that.dataSource._data.push(dataItem);
} else {
that._setItemId(item, dataItem.uid);
that._insertElementAt(item, index);
that.dataSource.add(dataItem);
}
that._bindDataSource();
that._syncElement();
},
_insertElementAt: function(item, index) {
var that = this;
var list = that._getList();
if (index > 0) {
$(item).insertAfter(list.children().eq(index - 1));
} else {
$(list).prepend(item);
}
},
_createNavigatable: function() {
var that = this;
var options = that.options;
if (options.navigatable) {
that._getList().on(CLICK, ENABLED_ITEM_SELECTOR, that._click.bind(that))
.on(KEYDOWN, that._keyDown.bind(that))
.on(BLUR, that._blur.bind(that));
}
},
_getTabIndex: function() {
var that = this;
var tabindex;
if (!isNaN(that._listTabIndex))
{
return that._listTabIndex;
}
tabindex = that.element.attr(TABINDEX);
that._listTabIndex = !isNaN(tabindex) ? tabindex : 0;
that.element.removeAttr(TABINDEX);
return that._listTabIndex;
},
_blur: function() {
if (this._target) {
this._target.removeClass(FOCUSED_CLASS);
this._getList().removeAttr(ARIA_ACTIVEDESCENDENT);
}
this._target = null;
},
_click: function(e) {
var that = this;
var target = $(e.currentTarget);
var oldTarget = that._target;
var list = that._getList();
var activeEl = kendo._activeElement();
var isContained = $.contains(list, activeEl);
if (oldTarget) {
oldTarget.removeClass(FOCUSED_CLASS);
}
that._target = target;
target.addClass(FOCUSED_CLASS);
list.attr(ARIA_ACTIVEDESCENDENT, target.attr(ID));
if (list[0] !== activeEl && (!isContained || !isInputElement(activeEl))) {
that.focus();
}
},
_getNavigatableItem: function(key) {
var that = this;
var current;
if (!that._target) {
current = that.items().filter(ENABLED_ITEM_SELECTOR).first();
} else {
current = that._target;
}
if (key === keys.UP && that._target) {
current = that._target.prevAll(ENABLED_ITEM_SELECTOR).first();
}
if (key === keys.DOWN && that._target) {
current = that._target.nextAll(ENABLED_ITEM_SELECTOR).first();
}
return current.length ? current : null;
},
_scrollIntoView: function(item) {
if (!item) {
return;
}
if (item[0]) {
item = item[0];
}
var list = this._getList().parent()[0];
var itemOffsetTop = item.offsetTop;
var contentScrollTop = list.scrollTop;
var contentOffsetHeight = list.clientHeight;
var bottomDistance = itemOffsetTop + item.offsetHeight;
if (contentScrollTop > itemOffsetTop) {
contentScrollTop = itemOffsetTop;
} else if (bottomDistance > (contentScrollTop + contentOffsetHeight)) {
contentScrollTop = (bottomDistance - contentOffsetHeight);
}
list.scrollTop = contentScrollTop;
},
_keyDown: function(e) {
var that = this;
var key = e.keyCode;
var current = that._getNavigatableItem(key);
var shouldPreventDefault;
if (!(e.shiftKey && !e.ctrlKey && (key === keys.DOWN || key === keys.UP))) {
that._shiftSelecting = false;
}
if (key == keys.DELETE) {
that._executeCommand(REMOVE);
if (that._target) {
that._target.removeClass(FOCUSED_CLASS);
that._getList().removeAttr(ARIA_ACTIVEDESCENDENT);
that._target = null;
}
shouldPreventDefault = true;
} else if (key === keys.DOWN || key === keys.UP) {
if (!current) {
e.preventDefault();
return;
}
if (e.shiftKey && !e.ctrlKey) {
if (that._target) {
that._target.removeClass(FOCUSED_CLASS);
}
if (!that._shiftSelecting) {
that.clearSelection();
that._shiftSelecting = true;
}
if (that._target && current.hasClass("k-selected")) {
that._target.removeClass(SELECTED_STATE_CLASS);
} else if (that.options.selectable == "single") {
that.select(current);
} else {
that.select(current.add(that._target));
}
that._updateToolbar();
that._updateAllToolbars();
that.trigger(CHANGE);
} else if (e.shiftKey && e.ctrlKey) {
that._executeCommand(key === keys.DOWN ? MOVE_DOWN : MOVE_UP);
that._scrollIntoView(that._target);
e.preventDefault();
return;
} else if (!e.shiftKey && !e.ctrlKey) {
if (that._target) {
that._target.removeClass(FOCUSED_CLASS);
}
if (that.options.selectable === "multiple") {
that.clearSelection();
}
that.select(current);
that._updateToolbar();
that._updateAllToolbars();
that.trigger(CHANGE);
}
if (current && that._target && that._target[0] !== current[0]) {
that._target.removeClass(FOCUSED_CLASS);
}
that._target = current;
if (that._target) {
that._target.addClass(FOCUSED_CLASS);
that._scrollIntoView(that._target);
that._getList().attr(ARIA_ACTIVEDESCENDENT, that._target.attr(ID));
} else {
that._getList().removeAttr(ARIA_ACTIVEDESCENDENT);
}
shouldPreventDefault = true;
} else if (key == keys.SPACEBAR) {
if (e.ctrlKey && that._target) {
if (that._target.hasClass(SELECTED_STATE_CLASS)) {
that._target.removeClass(SELECTED_STATE_CLASS);
} else {
that.select(that._target);
}
that.trigger(CHANGE);
} else {
that.clearSelection();
that.select(that._target);
that.trigger(CHANGE);
}
that._updateToolbar();
that._updateAllToolbars();
shouldPreventDefault = true;
} else if (e.ctrlKey && key == keys.RIGHT) {
if (e.shiftKey) {
that._executeCommand(TRANSFER_ALL_TO);
} else {
that._executeCommand(TRANSFER_TO);
}
that._target = that.select().length ? that.select() : null;
shouldPreventDefault = true;
} else if (e.ctrlKey && key == keys.LEFT) {
if (e.shiftKey) {
that._executeCommand(TRANSFER_ALL_FROM);
} else {
that._executeCommand(TRANSFER_FROM);
}
shouldPreventDefault = true;
} else if (key === keys.F10) {
if (that.toolbar) {
that.toolbar.element.find(TOOL_SELECTOR).not("[tabindex=-1]").trigger("focus");
shouldPreventDefault = true;
}
}
if (shouldPreventDefault) {
e.preventDefault();
}
},
focus: function() {
kendo.focusElement(this._getList());
},
_createDraggable: function() {
var that = this;
var draggable = that.options.draggable;
var hint;
if (draggable) {
hint = draggable.hint;
if (!that.options.selectable) {
throw new Error("Dragging requires selection to be enabled");
}
if (!hint) {
hint = defaultHint;
}
that._draggable = new kendo.ui.Draggable(that.wrapper, {
filter: draggable.filter ? draggable.filter : DEFAULT_FILTER,
hint: kendo.isFunction(hint) ? hint : $(hint),
dragstart: that._dragstart.bind(that),
dragcancel: that._clear.bind(that),
drag: that._drag.bind(that),
dragend: that._dragend.bind(that)
});
}
},
_dragstart: function(e) {
var that = this;
var draggedElement = that.draggedElement = e.currentTarget;
var placeholder = that.options.draggable.placeholder;
var dataItem = that.dataItem(draggedElement);
var eventData = { dataItems: dataItem, items: $(draggedElement), draggableEvent: e };
if (that.options.draggable.enabled === false) {
e.preventDefault();
return;
}
if (!placeholder) {
placeholder = defaultPlaceholder;
}
that.placeholder = kendo.isFunction(placeholder) ? $(placeholder.call(that, draggedElement)) : $(placeholder);
if (draggedElement.is(DOT + DISABLED_STATE_CLASS)) {
e.preventDefault();
} else {
if (that.trigger(DRAGSTART, eventData)) {
e.preventDefault();
} else {
that.clearSelection();
that.select(draggedElement);
draggedElement.addClass(DRAGGEDCLASS);
}
}
},
_clear: function() {
this.draggedElement.removeClass(DRAGGEDCLASS);
this.placeholder.remove();
},
_findElementUnderCursor: function(e) {
var elementUnderCursor = kendo.elementUnderCursor(e);
var draggable = e.sender;
if ($.contains(draggable.hint[0], elementUnderCursor) || draggable.hint[0] === elementUnderCursor) {
draggable.hint.hide();
elementUnderCursor = kendo.elementUnderCursor(e);
draggable.hint.show();
}
return elementUnderCursor;
},
_findTarget: function(e) {
var that = this;
var element = that._findElementUnderCursor(e);
var elementNode = $(element);
var list = that._getList();
var items;
var node;
if ($.contains(list[0], element)) {
items = that.items();
element = elementNode.is("li") ? element : elementNode.closest("li")[0];
node = items.filter(element)[0] || items.has(element)[0];
if (node) {
node = $(node);
return !node.hasClass(DISABLED_STATE_CLASS) ? { element: node, listBox: that } : null;
} else {
return null;
}
} else if (list[0] == element || list.parent()[0] == element) {
return { element: $(list), appendToBottom: true, listBox: that };
} else {
return that._searchConnectedListBox(elementNode);
}
},
_getElementCenter: function(element) {
var center = element.length ? kendo.getOffset(element) : null;
if (center) {
center.top += outerHeight(element) / 2;
center.left += outerWidth(element) / 2;
}
return center;
},
_searchConnectedListBox: function(element) {
var connectedListBox;
var items;
var node;
var originalElement = element;
var closestContainer;
if (element.hasClass("k-list-scroller k-selectable")) {
closestContainer = element;
} else {
closestContainer = element.closest(".k-list-scroller.k-selectable");
}
if (closestContainer.length) {
connectedListBox = closestContainer.parent().find("[data-role='listbox']").getKendoListBox();
} else {
return null;
}
if (connectedListBox && $.inArray(this.element[0].id, connectedListBox.options.dropSources) !== -1) {
items = connectedListBox.items();
element = element.is("li") ? element[0] : element.closest("li")[0];
node = items.filter(element)[0] || items.has(element)[0];
if (node) {
node = $(node);
return !node.hasClass(DISABLED_STATE_CLASS) ? { element: node, listBox: connectedListBox } : null;
} else if (!items.length ||
originalElement.hasClass("k-list-scroller k-selectable") ||
originalElement.hasClass("k-list-content")) {
return { element: connectedListBox._getList(), listBox: connectedListBox, appendToBottom: true };
} else {
return null;
}
}
return null;
},
_drag: function(e) {
var that = this;
var draggedElement = that.draggedElement;
var target = that._findTarget(e);
var cursorOffset = { left: e.x.location, top: e.y.location };
var dataItem = that.dataItem(draggedElement);
var eventData = { dataItems: [dataItem], items: $(draggedElement), draggableEvent: e };
var targetCenter;
var offsetDelta;
var direction;
if (that.trigger(DRAG, eventData)) {
e.preventDefault();
return;
}
if (target) {
targetCenter = this._getElementCenter(target.element);
offsetDelta = {
left: Math.round(cursorOffset.left - targetCenter.left),
top: Math.round(cursorOffset.top - targetCenter.top)
};
if (target.appendToBottom) {
that._movePlaceholder(target, null , draggedElement);
return;
}
if (offsetDelta.top < 0) {
direction = "prev";
} else if (offsetDelta.top > 0) {
direction = "next";
}
if (direction) {
if (target.element[0] != that.placeholder[0]) {
that._movePlaceholder(target, direction, draggedElement);
}
}
}
else if (that.placeholder.parent().length) {
that.placeholder.remove();
}
},
_movePlaceholder: function(target, direction, draggedElement) {
var that = this;
var placeholder = that.placeholder;
var draggableOptions = target.listBox.options.draggable;
if (placeholder.parent().length) {
that.placeholder.remove();
if (draggableOptions && draggableOptions.placeholder) {
that.placeholder = kendo.isFunction(draggableOptions.placeholder) ? $(draggableOptions.placeholder.call(that, draggedElement)) : $(draggableOptions.placeholder);
} else {
that.placeholder = $(defaultPlaceholder.call(that, draggedElement));
}
}
if (!direction) {
target.element.append(that.placeholder);
} else if (direction === "prev") {
target.element.before(that.placeholder);
} else if (direction === "next") {
target.element.after(that.placeholder);
}
},
_dragend: function(e) {
var that = this;
var draggedItem = that.draggedElement;
var items = that.items();
var placeholderIndex = items.not(that.draggedElement).index(that.placeholder);
var draggedIndex = items.not(that.placeholder).index(that.draggedElement);
var dataItem = that.dataItem(draggedItem);
var eventData = { dataItems: [dataItem], items: $(draggedItem) };
var connectedListBox = that.placeholder.closest(".k-listbox").find("[data-role='listbox']").getKendoListBox();
if (that.trigger(DROP, extend({}, eventData, { draggableEvent: e }))) {
e.preventDefault();
this._clear();
return;
}
if (placeholderIndex >= 0) {
if (placeholderIndex !== draggedIndex && !that.trigger(REORDER, extend({}, eventData, { offset: placeholderIndex - draggedIndex }))) {
draggedItem.removeClass(DRAGGEDCLASS);
that.reorder(draggedItem, placeholderIndex);
}
} else if (connectedListBox) {
if (!that.trigger(REMOVE, eventData)) {
that.remove($(draggedItem));
}
if (!connectedListBox.trigger(ADD, eventData)) {
connectedListBox._addItemAt(dataItem, connectedListBox.items().index(that.placeholder));
}
}
that._clear();
that._draggable.dropped = true;
that.trigger(DRAGEND, extend({}, eventData, { draggableEvent: e }));
that._updateToolbar();
that._updateAllToolbars();
},
reorder: function(item, index) {
var that = this;
var dataSource = that.dataSource;
var dataItem = that.dataItem(item);
var dataItemAtIndex = dataSource.at(index);
var itemAtIndex = that.items()[index];
var listItem = $(item);
if (dataItem && itemAtIndex && dataItemAtIndex) {
that._removeElement(listItem);
that._insertElementAt(listItem, index);
that._updateToolbar();
}
},
remove: function(items) {
var that = this;
var listItems = that._getItems(items);
var itemsLength = listItems.length;
var i;
that._unbindDataSource();
that._unbindDataChange();
for (i = 0; i < itemsLength; i++) {
that._removeItem($(listItems[i]));
}
that._bindDataChange();
that._bindDataSource();
that._syncElement();
that._updateToolbar();
that._updateAllToolbars();
},
_removeItem: function(item) {
var that = this;
var dataSource = that.dataSource;
var dataItem = that.dataItem(item);
var transport = dataSource.transport;
if (!dataItem || !dataSource) {
return;
}
if (typeof dataItem === typeof "") {
var data = dataSource._data;
for (var i = 0; i < data.length; i++) {
if (dataItem === data[i]) {
data[i] = data[data.length - 1];
data.pop();
break;
}
}
} else {
dataSource.remove(dataItem);
if (transport && (transport.destroy || (transport.options || {}).destroy) &&
(!dataItem.isNew || !dataItem.isNew())) {
dataSource._destroyed.push(dataItem);
}
}
that._removeElement(item);
},
_removeElement: function(item) {
kendo.destroy(item);
$(item).off().remove();
},
dataItem: function(element) {
var uniqueIdAttr = kendoAttr(UNIQUE_ID);
var uid = $(element).attr(uniqueIdAttr) || $(element).closest("[" + uniqueIdAttr + "]").attr(uniqueIdAttr);
if (uid) {
return this.dataSource.getByUid(uid);
}
else {
return $(element).find(".k-list-item-text").html();
}
},
_dataItems: function(items) {
var dataItems = [];
var listItems = $(items);
var itemsLength = listItems.length;
var i;
for (i = 0; i < itemsLength; i++) {
dataItems.push(this.dataItem(listItems.eq(i)));
}
return dataItems;
},
items: function() {
var list = this._getList();
return list.children();
},
select: function(items) {
const that = this,
selectable = that.selectable;
let enabledItems;
if (isUndefined(items)) {
return selectable.value();
}
enabledItems = that.items().filter(items).filter(ENABLED_ITEMS_SELECTOR);
if (!selectable.options.multiple) {
selectable.clear();
enabledItems = enabledItems.first();
}
const result = selectable.value(enabledItems);
that._updateAllToolbars();
return result;
},
clearSelection: function() {
const that = this,
selectable = that.selectable;
if (selectable) {
selectable.clear();
}
that._updateAllToolbars();
},
enable: function(items, enable) {
var that = this;
var enabled = isUndefined(enable) ? true : !!enable;
var listItems = that._getItems(items);
var itemsLength = listItems.length;
var i;
for (i = 0; i < itemsLength; i++) {
that._enableItem($(listItems[i]), enabled);
}
that._updateAllToolbars();
},
_enableItem: function(item, enable) {
var that = this;
var dataItem = that.dataItem(item);
if (dataItem) {
if (enable) {
$(item).removeClass(DISABLED_STATE_CLASS);
} else {
$(item)
.addClass(DISABLED_STATE_CLASS)
.removeClass(SELECTED_STATE_CLASS);
}
}
},
setDataSource: function(dataSource) {
var that = this;
that.options.dataSource = dataSource;
that._dataSource();
},
_dataSource: function() {
var that = this;
var options = that.options;
var dataSource = options.dataSource || {};
dataSource = Array.isArray(dataSource) ? { data: dataSource } : dataSource;
dataSource.select = that.element;
dataSource.fields = [
{ field: options.dataTextField },
{ field: options.dataValueField }];
that._unbindDataSource();
that.dataSource = DataSource.create(dataSource);
that._bindDataSource();
if (that.options.autoBind) {
that.wrapper.attr(ARIA_BUSY, true);
that.dataSource.fetch();
}
},
_bindDataChange: function() {
var dataSource = this.dataSource;
if (dataSource._data && dataSource._changeHandler) {
dataSource._data.bind(CHANGE, dataSource._changeHandler);
dataSource._data.trigger(CHANGE);
}
},
_unbindDataChange: function() {
var dataSource = this.dataSource;
if (dataSource._data && dataSource._changeHandler) {
dataSource._data.unbind(CHANGE, dataSource._changeHandler);
}
},
_bindDataSource: function() {
var that = this;
var dataSource = that.dataSource;
that._dataChangeHandler = that.refresh.bind(that);
if (dataSource) {
dataSource.bind(CHANGE, that._dataChangeHandler);
}
},
_unbindDataSource: function() {
var that = this;
var dataSource = that.dataSource;
if (dataSource) {
dataSource.unbind(CHANGE, that._dataChangeHandler);
}
},
_wrapper: function() {
var that = this,
element = that.element,
wrapper = element.parent("div.k-listbox");
if (!wrapper[0]) {
wrapper = element.wrap('<div class="k-listbox" unselectable="on" />').parent();
wrapper[0].style.cssText = element[0].style.cssText;
wrapper[0].title = element[0].title;
$('<div class="k-list-scroller"><div class="k-list k-list-md"><div class="k-list-content"></div></div></div>').insertBefore(element);
}
that.wrapper = wrapper.addClass(element[0].className).css("display", "");
that._innerWrapper = $(wrapper[0].firstChild);
},
_list: function() {
var that = this,
list = $("<ul class='" + LIST_CLASS + "' role='listbox'></ul>"),
selectable = that.options.selectable,
selectableOptions = Selectable.parseOptions(selectable);