{"version":3,"file":"kendo.binder.min.js","sources":["kendo.binder.js"],"sourcesContent":["(function(f, define) {\n    define('kendo.binder',[ \"kendo.core\", \"kendo.data\" ], f);\n})(function() {\n\nvar __meta__ = {\n    id: \"binder\",\n    name: \"MVVM\",\n    category: \"framework\",\n    description: \"Model View ViewModel (MVVM) is a design pattern which helps developers separate the Model (the data) from the View (the UI).\",\n    depends: [ \"core\", \"data\" ]\n};\n\n\n(function($, undefined) {\n    var kendo = window.kendo,\n        Observable = kendo.Observable,\n        ObservableObject = kendo.data.ObservableObject,\n        ObservableArray = kendo.data.ObservableArray,\n        toString = {}.toString,\n        binders = {},\n        Class = kendo.Class,\n        VALUE = \"value\",\n        SOURCE = \"source\",\n        EVENTS = \"events\",\n        CHECKED = \"checked\",\n        CSS = \"css\",\n        deleteExpando = true,\n        FUNCTION = \"function\",\n        CHANGE = \"change\";\n\n    (function() {\n        var a = document.createElement(\"a\");\n\n        try {\n            delete a.test;\n        } catch (e) {\n            deleteExpando = false;\n        }\n    })();\n\n    var Binding = Observable.extend( {\n        init: function(parents, path) {\n            var that = this;\n\n            Observable.fn.init.call(that);\n\n            that.source = parents[0];\n            that.parents = parents;\n            that.path = path;\n            that.dependencies = {};\n            that.dependencies[path] = true;\n            that.observable = that.source instanceof Observable;\n\n            that._access = function(e) {\n                that.dependencies[e.field] = true;\n            };\n\n            if (that.observable) {\n                that._change = function(e) {\n                    that.change(e);\n                };\n\n                that.source.bind(CHANGE, that._change);\n            }\n        },\n\n        _parents: function() {\n            var parents = this.parents;\n            var value = this.get();\n\n            if (value && typeof value.parent == \"function\") {\n                var parent = value.parent();\n\n                if ($.inArray(parent, parents) < 0) {\n                    parents = [parent].concat(parents);\n                }\n            }\n\n            return parents;\n        },\n\n        change: function(e) {\n            var dependency,\n                ch,\n                field = e.field,\n                that = this;\n\n            if (that.path === \"this\") {\n                that.trigger(CHANGE, e);\n            } else {\n                for (dependency in that.dependencies) {\n                    if (dependency.indexOf(field) === 0) {\n                       ch = dependency.charAt(field.length);\n\n                       if (!ch || ch === \".\" || ch === \"[\") {\n                            that.trigger(CHANGE, e);\n                            break;\n                       }\n                    }\n                }\n            }\n        },\n\n        start: function(source) {\n            source.bind(\"get\", this._access);\n        },\n\n        stop: function(source) {\n            source.unbind(\"get\", this._access);\n        },\n\n        get: function() {\n\n            var that = this,\n                source = that.source,\n                index = 0,\n                path = that.path,\n                result = source;\n\n            if (!that.observable) {\n                return result;\n            }\n\n            that.start(that.source);\n\n            result = source.get(path);\n\n            // Traverse the observable hierarchy if the binding is not resolved at the current level.\n            while (result === undefined && source) {\n\n                source = that.parents[++index];\n\n                if (source instanceof ObservableObject) {\n                    result = source.get(path);\n                }\n            }\n\n            // second pass try to get the parent from the object hierarchy\n            if (result === undefined) {\n                source = that.source; //get the initial source\n\n                while (result === undefined && source) {\n                    source = source.parent();\n\n                    if (source instanceof ObservableObject) {\n                        result = source.get(path);\n                    }\n                }\n            }\n\n            // If the result is a function - invoke it\n            if (typeof result === \"function\") {\n                index = path.lastIndexOf(\".\");\n\n                // If the function is a member of a nested observable object make that nested observable the context (this) of the function\n                if (index > 0) {\n                    source = source.get(path.substring(0, index));\n                }\n\n                // Invoke the function\n                that.start(source);\n\n                if (source !== that.source) {\n                    result = result.call(source, that.source);\n                } else {\n                    result = result.call(source);\n                }\n\n                that.stop(source);\n            }\n\n            // If the binding is resolved by a parent object\n            if (source && source !== that.source) {\n\n                that.currentSource = source; // save parent object\n\n                // Listen for changes in the parent object\n                source.unbind(CHANGE, that._change)\n                      .bind(CHANGE, that._change);\n            }\n\n            that.stop(that.source);\n\n            return result;\n        },\n\n        set: function(value) {\n            var source = this.currentSource || this.source;\n\n            var field = kendo.getter(this.path)(source);\n\n            if (typeof field === \"function\") {\n                if (source !== this.source) {\n                    field.call(source, this.source, value);\n                } else {\n                    field.call(source, value);\n                }\n            } else {\n                source.set(this.path, value);\n            }\n        },\n\n        destroy: function() {\n            if (this.observable) {\n                this.source.unbind(CHANGE, this._change);\n                if (this.currentSource) {\n                    this.currentSource.unbind(CHANGE, this._change);\n                }\n            }\n\n            this.unbind();\n        }\n    });\n\n    var EventBinding = Binding.extend( {\n        get: function() {\n            var source = this.source,\n                path = this.path,\n                index = 0,\n                handler;\n\n            handler = source.get(path);\n\n            while (!handler && source) {\n                source = this.parents[++index];\n\n                if (source instanceof ObservableObject) {\n                    handler = source.get(path);\n                }\n            }\n\n            if (!handler) {\n                return;\n            }\n\n            return handler.bind(source);\n        }\n    });\n\n    var TemplateBinding = Binding.extend( {\n        init: function(source, path, template) {\n            var that = this;\n\n            Binding.fn.init.call(that, source, path);\n\n            that.template = template;\n        },\n\n        render: function(value) {\n            var html;\n\n            this.start(this.source);\n\n            html = kendo.render(this.template, value);\n\n            this.stop(this.source);\n\n            return html;\n        }\n    });\n\n    var Binder = Class.extend({\n        init: function(element, bindings, options) {\n            this.element = element;\n            this.bindings = bindings;\n            this.options = options;\n        },\n\n        bind: function(binding, attribute) {\n            var that = this;\n\n            binding = attribute ? binding[attribute] : binding;\n\n            binding.bind(CHANGE, function(e) {\n                that.refresh(attribute || e);\n            });\n\n            that.refresh(attribute);\n        },\n\n        destroy: function() {\n        }\n    });\n\n    var TypedBinder = Binder.extend({\n        dataType: function() {\n            var dataType = this.element.getAttribute(\"data-\" + kendo.ns + \"type\") || this.element.type || \"text\";\n            return dataType.toLowerCase();\n        },\n\n        parsedValue: function() {\n            return this._parseValue(this.element.value, this.dataType());\n        },\n\n        _parseValue: function(value, dataType) {\n            if (dataType == \"date\") {\n                value = kendo.parseDate(value, \"yyyy-MM-dd\");\n            } else if (dataType == \"datetime-local\") {\n                value = kendo.parseDate(value, [\"yyyy-MM-ddTHH:mm:ss\", \"yyyy-MM-ddTHH:mm\"] );\n            } else if (dataType == \"number\") {\n                value = kendo.parseFloat(value);\n            } else if (dataType == \"boolean\") {\n                value = value.toLowerCase();\n                if (kendo.parseFloat(value) !== null) {\n                    value = Boolean(kendo.parseFloat(value));\n                } else {\n                    value = (value.toLowerCase() === \"true\");\n                }\n            }\n            return value;\n        }\n    });\n\n    binders.attr = Binder.extend({\n        refresh: function(key) {\n            this.element.setAttribute(key, this.bindings.attr[key].get());\n        }\n    });\n\n    binders.css = Binder.extend({\n        init: function(element, bindings, options) {\n            Binder.fn.init.call(this, element, bindings, options);\n            this.classes = {};\n        },\n        refresh: function(className) {\n            var element = $(this.element),\n                binding = this.bindings.css[className],\n                hasClass = this.classes[className] = binding.get();\n            if (hasClass) {\n                element.addClass(className);\n            } else {\n                element.removeClass(className);\n            }\n        }\n    });\n\n    binders.style = Binder.extend({\n        refresh: function(key) {\n            this.element.style[key] = this.bindings.style[key].get() || \"\";\n        }\n    });\n\n    binders.enabled = Binder.extend({\n        refresh: function() {\n            if (this.bindings.enabled.get()) {\n                this.element.removeAttribute(\"disabled\");\n            } else {\n                this.element.setAttribute(\"disabled\", \"disabled\");\n            }\n        }\n    });\n\n    binders.readonly = Binder.extend({\n       refresh: function() {\n            if (this.bindings.readonly.get()) {\n                this.element.setAttribute(\"readonly\", \"readonly\");\n            } else {\n                this.element.removeAttribute(\"readonly\");\n            }\n       }\n    });\n\n    binders.disabled = Binder.extend({\n        refresh: function() {\n            if (this.bindings.disabled.get()) {\n                this.element.setAttribute(\"disabled\", \"disabled\");\n            } else {\n                this.element.removeAttribute(\"disabled\");\n            }\n        }\n    });\n\n    binders.events = Binder.extend({\n        init: function(element, bindings, options) {\n            Binder.fn.init.call(this, element, bindings, options);\n            this.handlers = {};\n        },\n\n        refresh: function(key) {\n            var element = $(this.element),\n                binding = this.bindings.events[key],\n                handler = this.handlers[key];\n\n            if (handler) {\n                element.off(key, handler);\n            }\n\n            handler = this.handlers[key] = binding.get();\n\n            element.on(key, binding.source, handler);\n        },\n\n        destroy: function() {\n            var element = $(this.element),\n                handler;\n\n            for (handler in this.handlers) {\n                element.off(handler, this.handlers[handler]);\n            }\n        }\n    });\n\n    binders.text = Binder.extend({\n        refresh: function() {\n            var text = this.bindings.text.get();\n            var dataFormat = this.element.getAttribute(\"data-\" + kendo.ns + \"format\") || \"\";\n            if (text == null) {\n                text = \"\";\n            }\n\n            $(this.element).text(kendo.toString(text, dataFormat));\n        }\n    });\n\n    binders.visible = Binder.extend({\n        refresh: function() {\n            if (this.bindings.visible.get()) {\n                this.element.style.display = \"\";\n            } else {\n                this.element.style.display = \"none\";\n            }\n        }\n    });\n\n    binders.invisible = Binder.extend({\n        refresh: function() {\n            if (!this.bindings.invisible.get()) {\n                this.element.style.display = \"\";\n            } else {\n                this.element.style.display = \"none\";\n            }\n        }\n  });\n\n    binders.html = Binder.extend({\n        refresh: function() {\n            this.element.innerHTML = this.bindings.html.get();\n        }\n    });\n\n    binders.value = TypedBinder.extend({\n        init: function(element, bindings, options) {\n            TypedBinder.fn.init.call(this, element, bindings, options);\n\n            this._change = this.change.bind(this);\n            this.eventName = options.valueUpdate || CHANGE;\n\n            $(this.element).on(this.eventName, this._change);\n\n            this._initChange = false;\n        },\n\n        change: function() {\n            this._initChange = this.eventName != CHANGE;\n\n            this.bindings[VALUE].set(this.parsedValue());\n\n            this._initChange = false;\n        },\n\n        refresh: function() {\n            if (!this._initChange) {\n                var value = this.bindings[VALUE].get();\n\n                if (value == null) {\n                    value = \"\";\n                }\n\n                var type = this.dataType();\n\n                if (type == \"date\") {\n                    value = kendo.toString(value, \"yyyy-MM-dd\");\n                } else if (type == \"datetime-local\") {\n                    value = kendo.toString(value, \"yyyy-MM-ddTHH:mm:ss\");\n                }\n\n                this.element.value = value;\n            }\n\n            this._initChange = false;\n        },\n\n        destroy: function() {\n            $(this.element).off(this.eventName, this._change);\n        }\n    });\n\n    binders.source = Binder.extend({\n        init: function(element, bindings, options) {\n            Binder.fn.init.call(this, element, bindings, options);\n\n            var source = this.bindings.source.get();\n\n            if (source instanceof kendo.data.DataSource && options.autoBind !== false) {\n                source.fetch();\n            }\n        },\n\n        refresh: function(e) {\n            var that = this,\n                source = that.bindings.source.get();\n\n            if (source instanceof ObservableArray || source instanceof kendo.data.DataSource) {\n                e = e || {};\n\n                if (e.action == \"add\") {\n                    that.add(e.index, e.items);\n                } else if (e.action == \"remove\") {\n                    that.remove(e.index, e.items);\n                } else if (e.action != \"itemchange\") {\n                    that.render();\n                }\n            } else {\n                that.render();\n            }\n        },\n\n        container: function() {\n            var element = this.element;\n\n            if (element.nodeName.toLowerCase() == \"table\") {\n                if (!element.tBodies[0]) {\n                    element.appendChild(document.createElement(\"tbody\"));\n                }\n                element = element.tBodies[0];\n            }\n\n            return element;\n        },\n\n        template: function() {\n            var options = this.options,\n                template = options.template,\n                nodeName = this.container().nodeName.toLowerCase();\n\n            if (!template) {\n                if (nodeName == \"select\") {\n                    if (options.valueField || options.textField) {\n                        template = kendo.format('<option value=\"#:{0}#\">#:{1}#</option>',\n                            options.valueField || options.textField, options.textField || options.valueField);\n                    } else {\n                        template = \"<option>#:data#</option>\";\n                    }\n                } else if (nodeName == \"tbody\") {\n                    template = \"<tr><td>#:data#</td></tr>\";\n                } else if (nodeName == \"ul\" || nodeName == \"ol\") {\n                    template = \"<li>#:data#</li>\";\n                } else {\n                    template = \"#:data#\";\n                }\n                template = kendo.template(template);\n            }\n\n            return template;\n        },\n\n        add: function(index, items) {\n            var element = this.container(),\n                parents,\n                idx,\n                length,\n                child,\n                clone = element.cloneNode(false),\n                reference = element.children[index];\n\n            $(clone).html(kendo.render(this.template(), items));\n\n            if (clone.children.length) {\n                parents = this.bindings.source._parents();\n\n                for (idx = 0, length = items.length; idx < length; idx++) {\n                    child = clone.children[0];\n                    element.insertBefore(child, reference || null);\n                    bindElement(child, items[idx], this.options.roles, [items[idx]].concat(parents));\n                }\n            }\n        },\n\n        remove: function(index, items) {\n            var idx, element = this.container();\n\n            for (idx = 0; idx < items.length; idx++) {\n                var child = element.children[index];\n                unbindElementTree(child, true);\n                if (child.parentNode == element) {\n                    element.removeChild(child);\n                }\n            }\n        },\n\n        render: function() {\n            var source = this.bindings.source.get(),\n                parents,\n                idx,\n                length,\n                element = this.container(),\n                template = this.template();\n\n            if (source == null) {\n                return;\n            }\n\n            if (source instanceof kendo.data.DataSource) {\n                source = source.view();\n            }\n\n            if (!(source instanceof ObservableArray) && toString.call(source) !== \"[object Array]\") {\n                source = [source];\n            }\n\n            if (this.bindings.template) {\n                unbindElementChildren(element, true);\n\n                $(element).html(this.bindings.template.render(source));\n\n                if (element.children.length) {\n                    parents = this.bindings.source._parents();\n\n                    for (idx = 0, length = source.length; idx < length; idx++) {\n                        bindElement(element.children[idx], source[idx], this.options.roles, [source[idx]].concat(parents));\n                    }\n                }\n            } else {\n                $(element).html(kendo.render(template, source));\n            }\n        }\n    });\n\n    binders.input = {\n        checked: TypedBinder.extend({\n            init: function(element, bindings, options) {\n                TypedBinder.fn.init.call(this, element, bindings, options);\n                this._change = this.change.bind(this);\n\n                $(this.element).change(this._change);\n            },\n\n            change: function() {\n                var element = this.element;\n                var value = this.value();\n\n                if (element.type == \"radio\") {\n                    value = this.parsedValue();\n                    this.bindings[CHECKED].set(value);\n                } else if (element.type == \"checkbox\") {\n                    var source = this.bindings[CHECKED].get();\n                    var index;\n\n                    if (source instanceof ObservableArray) {\n                        value = this.parsedValue();\n                        if (value instanceof Date) {\n                            for (var i = 0; i < source.length; i++) {\n                                if (source[i] instanceof Date && +source[i] === +value) {\n                                    index = i;\n                                    break;\n                                }\n                            }\n                        } else {\n                            index = source.indexOf(value);\n                        }\n                        if (index > -1) {\n                            source.splice(index, 1);\n                        } else {\n                            source.push(value);\n                        }\n                    } else {\n                        this.bindings[CHECKED].set(value);\n                    }\n                }\n            },\n\n            refresh: function() {\n                var value = this.bindings[CHECKED].get(),\n                    source = value,\n                    type = this.dataType(),\n                    element = this.element;\n\n                if (element.type == \"checkbox\") {\n                    if (source instanceof ObservableArray) {\n                        var index = -1;\n                        value = this.parsedValue();\n                        if (value instanceof Date) {\n                            for (var i = 0; i < source.length; i++) {\n                                if (source[i] instanceof Date && +source[i] === +value) {\n                                    index = i;\n                                    break;\n                                }\n                            }\n                        } else {\n                            index = source.indexOf(value);\n                        }\n                        element.checked = (index >= 0);\n                    } else {\n                        element.checked = source;\n                    }\n                } else if (element.type == \"radio\") {\n                    if (type == \"date\") {\n                        value = kendo.toString(value, \"yyyy-MM-dd\");\n                    } else if (type == \"datetime-local\") {\n                        value = kendo.toString(value, \"yyyy-MM-ddTHH:mm:ss\");\n                    }\n\n                    if (value !== null && typeof(value) !== \"undefined\" && element.value === value.toString()) {\n                        element.checked = true;\n                    } else {\n                        element.checked = false;\n                    }\n                }\n            },\n\n            value: function() {\n                var element = this.element,\n                    value = element.value;\n\n                if (element.type == \"checkbox\") {\n                    value = element.checked;\n                }\n\n                return value;\n            },\n            destroy: function() {\n                $(this.element).off(CHANGE, this._change);\n            }\n        })\n    };\n\n    binders.select = {\n        source: binders.source.extend({\n            refresh: function(e) {\n                var that = this,\n                    source = that.bindings.source.get();\n\n                if (source instanceof ObservableArray || source instanceof kendo.data.DataSource) {\n                    e = e || {};\n                    if (e.action == \"add\") {\n                        that.add(e.index, e.items);\n                    } else if (e.action == \"remove\") {\n                        that.remove(e.index, e.items);\n                    } else if (e.action == \"itemchange\" || e.action === undefined) {\n                        that.render();\n                        if (that.bindings.value) {\n                            if (that.bindings.value) {\n                                var val = retrievePrimitiveValues(that.bindings.value.get(), $(that.element).data(\"valueField\"));\n                                if (val === null) {\n                                    that.element.selectedIndex = -1;\n                                } else {\n                                    that.element.value = val;\n                                }\n                            }\n                        }\n                    }\n                } else {\n                    that.render();\n                }\n            }\n        }),\n        value: TypedBinder.extend({\n            init: function(target, bindings, options) {\n                TypedBinder.fn.init.call(this, target, bindings, options);\n\n                this._change = this.change.bind(this);\n                $(this.element).change(this._change);\n            },\n\n            parsedValue: function() {\n                var dataType = this.dataType();\n                var values = [];\n                var value, option, idx, length;\n                for (idx = 0, length = this.element.options.length; idx < length; idx++) {\n                    option = this.element.options[idx];\n\n                    if (option.selected) {\n                        value = option.attributes.value;\n\n                        if (value && value.specified) {\n                            value = option.value;\n                        } else {\n                            value = option.text;\n                        }\n\n                        values.push(this._parseValue(value, dataType));\n                    }\n                }\n                return values;\n            },\n\n            change: function() {\n                var values = [],\n                    element = this.element,\n                    source,\n                    field = this.options.valueField || this.options.textField,\n                    valuePrimitive = this.options.valuePrimitive,\n                    option,\n                    valueIndex,\n                    value,\n                    idx,\n                    length;\n\n                for (idx = 0, length = element.options.length; idx < length; idx++) {\n                    option = element.options[idx];\n\n                    if (option.selected) {\n                        value = option.attributes.value;\n\n                        if (value && value.specified) {\n                            value = option.value;\n                        } else {\n                            value = option.text;\n                        }\n\n                        if (field) {\n                            values.push(value);\n                        } else {\n                            values.push(this._parseValue(value, this.dataType()));\n                        }\n\n                    }\n                }\n\n                if (field) {\n                    source = this.bindings.source.get();\n                    if (source instanceof kendo.data.DataSource) {\n                        source = source.view();\n                    }\n\n                    for (valueIndex = 0; valueIndex < values.length; valueIndex++) {\n                        for (idx = 0, length = source.length; idx < length; idx++) {\n                            var sourceValue = source[idx].get(field);\n                            var match = (String(sourceValue) === values[valueIndex]);\n                            if (match) {\n                                values[valueIndex] = source[idx];\n                                break;\n                            }\n                        }\n                    }\n                }\n\n                value = this.bindings[VALUE].get();\n                if (value instanceof ObservableArray) {\n                    value.splice.apply(value, [0, value.length].concat(values));\n                } else if (!valuePrimitive && (value instanceof ObservableObject || value === null || value === undefined || !field)) {\n                    this.bindings[VALUE].set(values[0]);\n                } else {\n                    this.bindings[VALUE].set(values[0].get(field));\n                }\n            },\n            refresh: function() {\n                var optionIndex,\n                    element = this.element,\n                    options = element.options,\n                    value = this.bindings[VALUE].get(),\n                    values = value,\n                    field = this.options.valueField || this.options.textField,\n                    found = false,\n                    type = this.dataType(),\n                    optionValue;\n\n                if (!(values instanceof ObservableArray)) {\n                    values = new ObservableArray([value]);\n                }\n\n                element.selectedIndex = -1;\n\n                for (var valueIndex = 0; valueIndex < values.length; valueIndex++) {\n                    value = values[valueIndex];\n\n\n                    if (field && value instanceof ObservableObject) {\n                        value = value.get(field);\n                    }\n\n                    if (type == \"date\") {\n                        value = kendo.toString(values[valueIndex], \"yyyy-MM-dd\");\n                    } else if (type == \"datetime-local\") {\n                        value = kendo.toString(values[valueIndex], \"yyyy-MM-ddTHH:mm:ss\");\n                    }\n\n                    for (optionIndex = 0; optionIndex < options.length; optionIndex++) {\n                        optionValue = options[optionIndex].value;\n\n                        if (optionValue === \"\" && value !== \"\") {\n                            optionValue = options[optionIndex].text;\n                        }\n\n                        if (value != null && optionValue == value.toString()) {\n                            options[optionIndex].selected = true;\n                            found = true;\n                        }\n                    }\n                }\n            },\n            destroy: function() {\n                $(this.element).off(CHANGE, this._change);\n            }\n        })\n    };\n\n    function dataSourceBinding(bindingName, fieldName, setter) {\n        return Binder.extend({\n            init: function(widget, bindings, options) {\n                var that = this;\n\n                Binder.fn.init.call(that, widget.element[0], bindings, options);\n\n                that.widget = widget;\n                that._dataBinding = that.dataBinding.bind(that);\n                that._dataBound = that.dataBound.bind(that);\n                that._itemChange = that.itemChange.bind(that);\n            },\n\n            itemChange: function(e) {\n                bindElement(e.item[0], e.data, this._ns(e.ns), [e.data].concat(this.bindings[bindingName]._parents()));\n            },\n\n            dataBinding: function(e) {\n                var idx,\n                    length,\n                    widget = this.widget,\n                    items = e.removedItems || widget.items();\n\n                for (idx = 0, length = items.length; idx < length; idx++) {\n                    unbindElementTree(items[idx], false);\n                }\n            },\n\n            _ns: function(ns) {\n                ns = ns || kendo.ui;\n                var all = [ kendo.ui, kendo.dataviz.ui, kendo.mobile.ui ];\n                all.splice($.inArray(ns, all), 1);\n                all.unshift(ns);\n\n                return kendo.rolesFromNamespaces(all);\n            },\n\n            dataBound: function(e) {\n                var idx,\n                    length,\n                    widget = this.widget,\n                    items = e.addedItems || widget.items(),\n                    dataSource = widget[fieldName],\n                    view,\n                    parents,\n                    hds = kendo.data.HierarchicalDataSource;\n\n                if (hds && dataSource instanceof hds) {\n                    // suppress binding of HDS items, because calling view() on root\n                    // will return only root items, and widget.items() returns all items\n                    return;\n                }\n\n                if (items.length) {\n                    view = e.addedDataItems || dataSource.flatView();\n                    parents = this.bindings[bindingName]._parents();\n\n                    for (idx = 0, length = view.length; idx < length; idx++) {\n                        if (items[idx]) {\n                            bindElement(items[idx], view[idx], this._ns(e.ns), [view[idx]].concat(parents));\n                        }\n                    }\n                }\n            },\n\n            refresh: function(e) {\n                var that = this,\n                    source,\n                    widget = that.widget,\n                    select, multiselect, dropdowntree;\n\n                e = e || {};\n\n                if (!e.action) {\n                    that.destroy();\n\n                    widget.bind(\"dataBinding\", that._dataBinding);\n                    widget.bind(\"dataBound\", that._dataBound);\n                    widget.bind(\"itemChange\", that._itemChange);\n\n                    source = that.bindings[bindingName].get();\n\n                    if (widget[fieldName] instanceof kendo.data.DataSource && widget[fieldName] != source) {\n                        if (source instanceof kendo.data.DataSource) {\n                            widget[setter](source);\n                        } else if (source && source._dataSource) {\n                            widget[setter](source._dataSource);\n                        } else {\n                            select = kendo.ui.Select && widget instanceof kendo.ui.Select;\n                            multiselect = kendo.ui.MultiSelect && widget instanceof kendo.ui.MultiSelect;\n                            dropdowntree = kendo.ui.DropDownTree && widget instanceof kendo.ui.DropDownTree;\n\n                            if (!dropdowntree) {\n                                widget[fieldName].data(source);\n                            } else {\n                                widget.treeview[fieldName].data(source);\n                            }\n\n                            if (that.bindings.value && (select || multiselect)) {\n                                widget.value(retrievePrimitiveValues(that.bindings.value.get(), widget.options.dataValueField));\n                            }\n                        }\n                    }\n                }\n            },\n\n            destroy: function() {\n                var widget = this.widget;\n\n                widget.unbind(\"dataBinding\", this._dataBinding);\n                widget.unbind(\"dataBound\", this._dataBound);\n                widget.unbind(\"itemChange\", this._itemChange);\n            }\n        });\n    }\n\n    binders.widget = {\n        events: Binder.extend({\n            init: function(widget, bindings, options) {\n                Binder.fn.init.call(this, widget.element[0], bindings, options);\n                this.widget = widget;\n                this.handlers = {};\n            },\n\n            refresh: function(key) {\n                var binding = this.bindings.events[key],\n                    handler = this.handlers[key];\n\n                if (handler) {\n                    this.widget.unbind(key, handler);\n                }\n\n                handler = binding.get();\n\n                this.handlers[key] = function(e) {\n                    e.data = binding.source;\n\n                    handler(e);\n\n                    if (e.data === binding.source) {\n                        delete e.data;\n                    }\n                };\n\n                this.widget.bind(key, this.handlers[key]);\n            },\n\n            destroy: function() {\n                var handler;\n\n                for (handler in this.handlers) {\n                    this.widget.unbind(handler, this.handlers[handler]);\n                }\n            }\n        }),\n\n        checked: Binder.extend({\n            init: function(widget, bindings, options) {\n                Binder.fn.init.call(this, widget.element[0], bindings, options);\n\n                this.widget = widget;\n                this._change = this.change.bind(this);\n                this.widget.bind(CHANGE, this._change);\n            },\n            change: function() {\n                this.bindings[CHECKED].set(this.value());\n            },\n\n            refresh: function() {\n                if (this.element.type === \"radio\") {\n                    this.widget.check(this.bindings[CHECKED].get().toString() === this.value());\n                } else {\n                    this.widget.check(this.bindings[CHECKED].get() === true);\n                }\n            },\n\n            value: function() {\n                var element = this.element,\n                    value = element.value;\n\n                if (value == \"on\" || value == \"off\" || this.element.type == \"checkbox\") {\n                    value = element.checked;\n                }\n\n                return value;\n            },\n\n            destroy: function() {\n                this.widget.unbind(CHANGE, this._change);\n            }\n        }),\n\n        start: Binder.extend({\n            init: function(widget, bindings, options) {\n                Binder.fn.init.call(this, widget.element[0], bindings, options);\n                this._change = this.change.bind(this);\n                this.widget = widget;\n                this.widget.bind(CHANGE, this._change);\n            },\n\n            change: function() {\n                this.bindings.start.set(this.widget.range().start);\n            },\n\n            refresh: function() {\n                var that = this;\n                var start = this.bindings.start.get();\n                var end = that.widget._range ? that.widget._range.end : null;\n                this.widget.range({ start: start, end: end });\n            },\n\n            destroy: function() {\n                this.widget.unbind(CHANGE, this._change);\n            }\n        }),\n\n        end: Binder.extend({\n            init: function(widget, bindings, options) {\n                Binder.fn.init.call(this, widget.element[0], bindings, options);\n                this._change = this.change.bind(this);\n                this.widget = widget;\n                this.widget.bind(CHANGE, this._change);\n            },\n\n            change: function() {\n                this.bindings.end.set(this.widget.range().end);\n            },\n\n            refresh: function() {\n                var that = this;\n                var end = this.bindings.end.get();\n                var start = that.widget._range ? that.widget._range.start : null;\n                this.widget.range({ start: start, end: end });\n            },\n\n            destroy: function() {\n                this.widget.unbind(CHANGE, this._change);\n            }\n        }),\n\n        visible: Binder.extend({\n            init: function(widget, bindings, options) {\n                Binder.fn.init.call(this, widget.element[0], bindings, options);\n\n                this.widget = widget;\n            },\n\n            refresh: function() {\n                var visible = this.bindings.visible.get();\n                this.widget.wrapper[0].style.display = visible ? \"\" : \"none\";\n            }\n        }),\n\n        invisible: Binder.extend({\n            init: function(widget, bindings, options) {\n                Binder.fn.init.call(this, widget.element[0], bindings, options);\n\n                this.widget = widget;\n            },\n\n            refresh: function() {\n                var invisible = this.bindings.invisible.get();\n                this.widget.wrapper[0].style.display = invisible ? \"none\" : \"\";\n            }\n        }),\n\n        floatingLabel: Binder.extend({\n            init: function(widget, bindings, options) {\n                Binder.fn.init.call(this, widget.element[0], bindings, options);\n\n                if (!widget.floatingLabel) {\n                    return;\n                }\n\n                widget.floatingLabel.refresh();\n            }\n        }),\n\n        enabled: Binder.extend({\n            init: function(widget, bindings, options) {\n                Binder.fn.init.call(this, widget.element[0], bindings, options);\n\n                this.widget = widget;\n            },\n\n            refresh: function() {\n                if (this.widget.enable) {\n                    this.widget.enable(this.bindings.enabled.get());\n                }\n            }\n        }),\n\n        disabled: Binder.extend({\n            init: function(widget, bindings, options) {\n                Binder.fn.init.call(this, widget.element[0], bindings, options);\n\n                this.widget = widget;\n            },\n\n            refresh: function() {\n                if (this.widget.enable) {\n                    this.widget.enable(!this.bindings.disabled.get());\n                }\n            }\n        }),\n\n        source: dataSourceBinding(\"source\", \"dataSource\", \"setDataSource\"),\n\n        value: Binder.extend({\n            init: function(widget, bindings, options) {\n                Binder.fn.init.call(this, widget.element[0], bindings, options);\n\n                this.widget = widget;\n                this._change = this.change.bind(this);\n                this.widget.first(CHANGE, this._change);\n\n                var value = this.bindings.value.get();\n\n                this._valueIsObservableObject = !options.valuePrimitive && (value == null || value instanceof ObservableObject);\n                this._valueIsObservableArray = value instanceof ObservableArray;\n                this._initChange = false;\n            },\n\n            _source: function() {\n                var source;\n\n                if (this.widget.dataItem) {\n                    source = this.widget.dataItem();\n                    if (source && source instanceof ObservableObject) {\n                        return [source];\n                    }\n                }\n\n                if (this.bindings.source) {\n                    source = this.bindings.source.get();\n                }\n\n                if (!source || source instanceof kendo.data.DataSource) {\n                    source = this.widget.dataSource.flatView();\n                }\n\n                return source;\n            },\n\n            change: function() {\n                var value = this.widget.value(),\n                    field = this.options.dataValueField || this.options.dataTextField,\n                    isArray = toString.call(value) === \"[object Array]\",\n                    isObservableObject = this._valueIsObservableObject,\n                    valueIndex, valueLength, values = [],\n                    sourceItem, sourceValue,\n                    idx, length, source;\n\n                this._initChange = true;\n\n                if (field) {\n\n                    if (value === \"\" && (isObservableObject || this.options.valuePrimitive)) {\n                        value = null;\n                    } else {\n                        source = this._source();\n\n                        if (isArray) {\n                            valueLength = value.length;\n                            values = value.slice(0);\n                        }\n\n                        for (idx = 0, length = source.length; idx < length; idx++) {\n                            sourceItem = source[idx];\n                            sourceValue = sourceItem.get(field);\n\n                            if (isArray) {\n                                for (valueIndex = 0; valueIndex < valueLength; valueIndex++) {\n                                    if (sourceValue == values[valueIndex]) {\n                                        values[valueIndex] = sourceItem;\n                                        break;\n                                    }\n                                }\n                            } else if (sourceValue == value) {\n                                value = isObservableObject ? sourceItem : sourceValue;\n                                break;\n                            }\n                        }\n\n                        if (values[0]) {\n                            if (this._valueIsObservableArray) {\n                                value = values;\n                            } else if (isObservableObject || !field) {\n                                value = values[0];\n                            } else {\n                                value = values[0].get(field);\n                            }\n                        }\n                    }\n                }\n\n                this.bindings.value.set(value);\n                this._initChange = false;\n            },\n\n            refresh: function() {\n                if (!this._initChange) {\n                    var widget = this.widget;\n                    var options = widget.options;\n                    var textField = options.dataTextField;\n                    var valueField = options.dataValueField || textField;\n                    var value = this.bindings.value.get();\n                    var text = options.text || \"\";\n                    var idx = 0, length;\n                    var values = [];\n\n                    if (value === undefined) {\n                        value = null;\n                    }\n\n                    if (valueField) {\n                        if (value instanceof ObservableArray) {\n                            for (length = value.length; idx < length; idx++) {\n                                values[idx] = value[idx].get(valueField);\n                            }\n                            value = values;\n                        } else if (value instanceof ObservableObject) {\n                            text = value.get(textField);\n                            value = value.get(valueField);\n                        }\n                    }\n\n                    if (options.autoBind === false && !options.cascadeFrom && widget.listView && !widget.listView.bound()) {\n                        if (textField === valueField && !text) {\n                            text = value;\n                        }\n\n                        if (!text && (value || value === 0) && options.valuePrimitive) {\n                            widget.value(value);\n                        } else {\n                            widget._preselect(value, text);\n                        }\n                    } else {\n                        widget.value(value);\n                    }\n                }\n\n                this._initChange = false;\n            },\n\n            destroy: function() {\n                this.widget.unbind(CHANGE, this._change);\n            }\n        }),\n        dropdowntree: {\n            value: Binder.extend({\n                init: function(widget, bindings, options) {\n                    Binder.fn.init.call(this, widget.element[0], bindings, options);\n\n                    this.widget = widget;\n                    this._change = this.change.bind(this);\n                    this.widget.first(CHANGE, this._change);\n                    this._initChange = false;\n                },\n\n                change: function() {\n                    var that = this,\n                        oldValues = that.bindings[VALUE].get(),\n                        valuePrimitive = that.options.valuePrimitive,\n                        selectedNode = that.widget.treeview.select(),\n                        nonPrimitiveValues = that.widget._isMultipleSelection() ? that.widget._getAllChecked() : (that.widget.treeview.dataItem(selectedNode) || that.widget.value()),\n                        newValues = (valuePrimitive || that.widget.options.autoBind === false) ? that.widget.value() : nonPrimitiveValues;\n\n                    var field = this.options.dataValueField || this.options.dataTextField;\n\n                    newValues = newValues.slice ? newValues.slice(0) : newValues;\n\n                    that._initChange = true;\n\n                    if (oldValues instanceof ObservableArray) {\n                        var remove = [];\n                        var newLength = newValues.length;\n                        var i = 0, j = 0;\n                        var old = oldValues[i];\n                        var same = false;\n                        var removeIndex;\n                        var newValue;\n                        var found;\n\n                        while (old !== undefined) {\n                            found = false;\n                            for (j = 0; j < newLength; j++) {\n                                if (valuePrimitive) {\n                                    same = newValues[j] == old;\n                                } else {\n                                    newValue = newValues[j];\n\n                                    newValue = newValue.get ? newValue.get(field) : newValue;\n                                    same = newValue == (old.get ? old.get(field) : old);\n                                }\n\n                                if (same) {\n                                    newValues.splice(j, 1);\n                                    newLength -= 1;\n                                    found = true;\n                                    break;\n                                }\n                            }\n\n                            if (!found) {\n                                remove.push(old);\n                                arraySplice(oldValues, i, 1);\n                                removeIndex = i;\n                            } else {\n                                i += 1;\n                            }\n\n                            old = oldValues[i];\n                        }\n\n                        arraySplice(oldValues, oldValues.length, 0, newValues);\n\n                        if (remove.length) {\n                            oldValues.trigger(\"change\", {\n                                action: \"remove\",\n                                items: remove,\n                                index: removeIndex\n                            });\n                        }\n\n                        if (newValues.length) {\n                            oldValues.trigger(\"change\", {\n                                action: \"add\",\n                                items: newValues,\n                                index: oldValues.length - 1\n                            });\n                        }\n                    } else {\n                        that.bindings[VALUE].set(newValues);\n                    }\n\n                    that._initChange = false;\n                },\n\n                refresh: function() {\n                    if (!this._initChange) {\n                        var options = this.options,\n                            widget = this.widget,\n                            field = options.dataValueField || options.dataTextField,\n                            value = this.bindings.value.get(),\n                            data = value,\n                            idx = 0, length,\n                            values = [],\n                            selectedValue;\n\n                        if (field) {\n                            if (value instanceof ObservableArray) {\n                                for (length = value.length; idx < length; idx++) {\n                                    selectedValue = value[idx];\n                                    values[idx] = selectedValue.get ? selectedValue.get(field) : selectedValue;\n                                }\n                                value = values;\n                            } else if (value instanceof ObservableObject) {\n                                value = value.get(field);\n                            }\n                        }\n                        if (options.autoBind === false && options.valuePrimitive !== true) {\n                            widget._preselect(data, value);\n                        } else {\n                            widget.value(value);\n                        }\n                   }\n                },\n\n                destroy: function() {\n                    this.widget.unbind(CHANGE, this._change);\n                }\n            })\n        },\n        gantt: {\n            dependencies: dataSourceBinding(\"dependencies\", \"dependencies\", \"setDependenciesDataSource\")\n        },\n\n        multiselect: {\n            value: Binder.extend({\n                init: function(widget, bindings, options) {\n                    Binder.fn.init.call(this, widget.element[0], bindings, options);\n\n                    this.widget = widget;\n                    this._change = this.change.bind(this);\n                    this.widget.first(CHANGE, this._change);\n                    this._initChange = false;\n                },\n\n                change: function() {\n                    var that = this,\n                        oldValues = that.bindings[VALUE].get(),\n                        valuePrimitive = that.options.valuePrimitive,\n                        newValues = valuePrimitive ? that.widget.value() : that.widget.dataItems();\n\n                    var field = this.options.dataValueField || this.options.dataTextField;\n\n                    newValues = newValues.slice(0);\n\n                    that._initChange = true;\n\n                    if (oldValues instanceof ObservableArray) {\n                        var remove = [];\n\n                        var newLength = newValues.length;\n\n                        var i = 0, j = 0;\n                        var old = oldValues[i];\n                        var same = false;\n                        var removeIndex;\n                        var newValue;\n                        var found;\n\n                        while (old !== undefined) {\n                            found = false;\n                            for (j = 0; j < newLength; j++) {\n                                if (valuePrimitive) {\n                                    same = newValues[j] == old;\n                                } else {\n                                    newValue = newValues[j];\n\n                                    newValue = newValue.get ? newValue.get(field) : newValue;\n                                    same = newValue == (old.get ? old.get(field) : old);\n                                }\n\n                                if (same) {\n                                    newValues.splice(j, 1);\n                                    newLength -= 1;\n                                    found = true;\n                                    break;\n                                }\n                            }\n\n                            if (!found) {\n                                remove.push(old);\n                                arraySplice(oldValues, i, 1);\n                                removeIndex = i;\n                            } else {\n                                i += 1;\n                            }\n\n                            old = oldValues[i];\n                        }\n\n                        arraySplice(oldValues, oldValues.length, 0, newValues);\n\n                        if (remove.length) {\n                            oldValues.trigger(\"change\", {\n                                action: \"remove\",\n                                items: remove,\n                                index: removeIndex\n                            });\n                        }\n\n                        if (newValues.length) {\n                            oldValues.trigger(\"change\", {\n                                action: \"add\",\n                                items: newValues,\n                                index: oldValues.length - 1\n                            });\n                        }\n                    } else {\n                        that.bindings[VALUE].set(newValues);\n                    }\n\n                    that._initChange = false;\n                },\n\n                refresh: function() {\n                    if (!this._initChange) {\n                        var options = this.options,\n                            widget = this.widget,\n                            field = options.dataValueField || options.dataTextField,\n                            value = this.bindings.value.get(),\n                            data = value,\n                            idx = 0, length,\n                            values = [],\n                            selectedValue;\n\n                        if (value === undefined) {\n                            value = null;\n                        }\n\n                        if (field) {\n                            if (value instanceof ObservableArray) {\n                                for (length = value.length; idx < length; idx++) {\n                                    selectedValue = value[idx];\n                                    values[idx] = selectedValue.get ? selectedValue.get(field) : selectedValue;\n                                }\n                                value = values;\n                            } else if (value instanceof ObservableObject) {\n                                value = value.get(field);\n                            }\n                        }\n\n                        if (options.autoBind === false && options.valuePrimitive !== true && !widget._isBound()) {\n                            widget._preselect(data, value);\n                        } else {\n                            widget.value(value);\n                        }\n                    }\n                },\n\n                destroy: function() {\n                    this.widget.unbind(CHANGE, this._change);\n                }\n\n            })\n        },\n        scheduler: {\n            source: dataSourceBinding(\"source\", \"dataSource\", \"setDataSource\").extend({\n                dataBound: function(e) {\n                    var idx;\n                    var length;\n                    var widget = this.widget;\n                    var elements = e.addedItems || widget.items();\n                    var data, parents;\n\n                    if (elements.length) {\n                        data = e.addedDataItems || widget.dataItems();\n                        parents = this.bindings.source._parents();\n\n                        for (idx = 0, length = data.length; idx < length; idx++) {\n                            bindElement(elements[idx], data[idx], this._ns(e.ns), [data[idx]].concat(parents));\n                        }\n                    }\n                }\n            })\n        },\n\n        grid: {\n            source: dataSourceBinding(\"source\", \"dataSource\", \"setDataSource\").extend({\n                dataBound: function(e) {\n                    var idx,\n                    length,\n                    widget = this.widget,\n                    elements = e.addedItems || widget.items(),\n                    parents,\n                    data;\n\n                    if (elements.length) {\n                        data = e.addedDataItems || widget.dataItems();\n                        parents = this.bindings.source._parents();\n\n                        for (idx = 0, length = data.length; idx < length; idx++) {\n                            bindElement(elements[idx], data[idx], this._ns(e.ns), [data[idx]].concat(parents));\n                        }\n                    }\n                }\n            })\n        },\n\n        badge: {\n            text: Binder.extend({\n                init: function(widget, bindings, options) {\n                    Binder.fn.init.call(this, widget.element[0], bindings, options);\n\n                    this.widget = widget;\n                },\n                refresh: function() {\n                    var text = this.bindings.text.get();\n\n                    if (text == null) {\n                        text = \"\";\n                    }\n                    this.widget.text(text);\n                }\n            })\n        }\n    };\n\n    var arraySplice = function(arr, idx, remove, add) {\n        add = add || [];\n        remove = remove || 0;\n\n        var addLength = add.length;\n        var oldLength = arr.length;\n\n        var shifted = [].slice.call(arr, idx + remove);\n        var shiftedLength = shifted.length;\n        var index;\n\n        if (addLength) {\n            addLength = idx + addLength;\n            index = 0;\n\n            for (; idx < addLength; idx++) {\n                arr[idx] = add[index];\n                index++;\n            }\n\n            arr.length = addLength;\n        } else if (remove) {\n            arr.length = idx;\n\n            remove += idx;\n            while (idx < remove) {\n                delete arr[--remove];\n            }\n        }\n\n        if (shiftedLength) {\n            shiftedLength = idx + shiftedLength;\n            index = 0;\n\n            for (; idx < shiftedLength; idx++) {\n                arr[idx] = shifted[index];\n                index++;\n            }\n\n            arr.length = shiftedLength;\n        }\n\n        idx = arr.length;\n\n        while (idx < oldLength) {\n            delete arr[idx];\n            idx++;\n        }\n    };\n\n    var BindingTarget = Class.extend( {\n        init: function(target, options) {\n            this.target = target;\n            this.options = options;\n            this.toDestroy = [];\n        },\n\n        bind: function(bindings) {\n            var key,\n                hasValue,\n                hasSource,\n                hasEvents,\n                hasChecked,\n                hasCss,\n                widgetBinding = this instanceof WidgetBindingTarget,\n                specificBinders = this.binders();\n\n            for (key in bindings) {\n                if (key == VALUE) {\n                    hasValue = true;\n                } else if (key == SOURCE) {\n                    hasSource = true;\n                } else if (key == EVENTS && !widgetBinding) {\n                    hasEvents = true;\n                } else if (key == CHECKED) {\n                    hasChecked = true;\n                } else if (key == CSS) {\n                    hasCss = true;\n                } else {\n                    this.applyBinding(key, bindings, specificBinders);\n                }\n            }\n            if (hasSource) {\n                this.applyBinding(SOURCE, bindings, specificBinders);\n            }\n\n            if (hasValue) {\n                this.applyBinding(VALUE, bindings, specificBinders);\n            }\n\n            if (hasChecked) {\n                this.applyBinding(CHECKED, bindings, specificBinders);\n            }\n\n            if (hasEvents && !widgetBinding) {\n                this.applyBinding(EVENTS, bindings, specificBinders);\n            }\n\n            if (hasCss && !widgetBinding) {\n                this.applyBinding(CSS, bindings, specificBinders);\n            }\n\n            if (widgetBinding && this.target && this.target.floatingLabel) {\n                this.applyBinding(\"floatingLabel\", bindings, specificBinders);\n            }\n        },\n\n        binders: function() {\n            return binders[this.target.nodeName.toLowerCase()] || {};\n        },\n\n        applyBinding: function(name, bindings, specificBinders) {\n            var binder = specificBinders[name] || binders[name],\n                toDestroy = this.toDestroy,\n                attribute,\n                binding = bindings[name];\n\n            if (binder) {\n                binder = new binder(this.target, bindings, this.options);\n\n                toDestroy.push(binder);\n\n                if (binding instanceof Binding) {\n                    binder.bind(binding);\n                    toDestroy.push(binding);\n                } else {\n                    for (attribute in binding) {\n                        binder.bind(binding, attribute);\n                        toDestroy.push(binding[attribute]);\n                    }\n                }\n            } else if (name !== \"template\") {\n                throw new Error(\"The \" + name + \" binding is not supported by the \" + this.target.nodeName.toLowerCase() + \" element\");\n            }\n        },\n\n        destroy: function() {\n            var idx,\n                length,\n                toDestroy = this.toDestroy;\n\n            for (idx = 0, length = toDestroy.length; idx < length; idx++) {\n                toDestroy[idx].destroy();\n            }\n        }\n    });\n\n    var WidgetBindingTarget = BindingTarget.extend( {\n        binders: function() {\n            return binders.widget[this.target.options.name.toLowerCase()] || {};\n        },\n\n        applyBinding: function(name, bindings, specificBinders) {\n            var binder = specificBinders[name] || binders.widget[name],\n                toDestroy = this.toDestroy,\n                attribute,\n                binding = bindings[name];\n\n            if (binder) {\n                binder = new binder(this.target, bindings, this.target.options);\n\n                toDestroy.push(binder);\n\n\n                if (binding instanceof Binding) {\n                    binder.bind(binding);\n                    toDestroy.push(binding);\n                } else {\n                    for (attribute in binding) {\n                        binder.bind(binding, attribute);\n                        toDestroy.push(binding[attribute]);\n                    }\n                }\n            } else {\n                throw new Error(\"The \" + name + \" binding is not supported by the \" + this.target.options.name + \" widget\");\n            }\n        }\n    });\n\n    function bindingTargetForRole(element, roles) {\n        var widget = kendo.initWidget(element, {}, roles);\n\n        if (widget) {\n            return new WidgetBindingTarget(widget);\n        }\n    }\n\n    var keyValueRegExp = /[A-Za-z0-9_\\-]+:(\\{([^}]*)\\}|[^,}]+)/g,\n        whiteSpaceRegExp = /\\s/g;\n\n    function parseBindings(bind) {\n        var result = {},\n            idx,\n            length,\n            token,\n            colonIndex,\n            key,\n            value,\n            tokens;\n\n        tokens = bind.match(keyValueRegExp);\n\n        for (idx = 0, length = tokens.length; idx < length; idx++) {\n            token = tokens[idx];\n            colonIndex = token.indexOf(\":\");\n\n            key = token.substring(0, colonIndex);\n            value = token.substring(colonIndex + 1);\n\n            if (value.charAt(0) == \"{\") {\n                value = parseBindings(value);\n            }\n\n            result[key] = value;\n        }\n\n        return result;\n    }\n\n    function createBindings(bindings, source, type) {\n        var binding,\n            result = {};\n\n        for (binding in bindings) {\n            result[binding] = new type(source, bindings[binding]);\n        }\n\n        return result;\n    }\n\n    function bindElement(element, source, roles, parents) {\n\n        if (!element || element.getAttribute(\"data-\" + kendo.ns + \"stop\")) {\n            return;\n        }\n\n        var role = element.getAttribute(\"data-\" + kendo.ns + \"role\"),\n            idx,\n            bind = element.getAttribute(\"data-\" + kendo.ns + \"bind\"),\n            childrenCopy = [],\n            deep = true,\n            bindings,\n            options = {},\n            target;\n\n        parents = parents || [source];\n\n        if (role || bind) {\n            unbindElement(element, false);\n        }\n\n        if (role) {\n            target = bindingTargetForRole(element, roles);\n        }\n\n        if (bind) {\n            bind = parseBindings(bind.replace(whiteSpaceRegExp, \"\"));\n\n            if (!target) {\n                options = kendo.parseOptions(element, { textField: \"\", valueField: \"\", template: \"\", valueUpdate: CHANGE, valuePrimitive: false, autoBind: true }, source);\n                options.roles = roles;\n                target = new BindingTarget(element, options);\n            }\n\n            target.source = source;\n\n            bindings = createBindings(bind, parents, Binding);\n\n            if (options.template) {\n                bindings.template = new TemplateBinding(parents, \"\", options.template);\n            }\n\n            if (bindings.click) {\n                bind.events = bind.events || {};\n                bind.events.click = bind.click;\n                bindings.click.destroy();\n                delete bindings.click;\n            }\n\n            if (bindings.source) {\n                deep = false;\n            }\n\n            if (bind.attr) {\n                bindings.attr = createBindings(bind.attr, parents, Binding);\n            }\n\n            if (bind.style) {\n                bindings.style = createBindings(bind.style, parents, Binding);\n            }\n\n            if (bind.events) {\n                bindings.events = createBindings(bind.events, parents, EventBinding);\n            }\n\n            if (bind.css) {\n          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dom.length; idx < length; idx++) {\n            node = dom[idx];\n            if (node.nodeType === 1) {\n                bindElement(node, object, roles);\n            }\n        }\n    }\n\n    function unbindElement(element, destroyWidget) {\n        var bindingTarget = element.kendoBindingTarget;\n\n        if (bindingTarget) {\n            bindingTarget.destroy();\n\n            if (deleteExpando) {\n                delete element.kendoBindingTarget;\n            } else if (element.removeAttribute) {\n                element.removeAttribute(\"kendoBindingTarget\");\n            } else {\n                element.kendoBindingTarget = null;\n            }\n        }\n\n        if (destroyWidget) {\n            var widget = kendo.widgetInstance($(element));\n            if (widget && typeof widget.destroy === FUNCTION) {\n                widget.destroy();\n            }\n        }\n    }\n\n    function unbindElementTree(element, destroyWidgets) {\n        unbindElement(element, destroyWidgets);\n\n        unbindElementChildren(element, destroyWidgets);\n    }\n\n    function unbindElementChildren(element, destroyWidgets) {\n        var children = element.children;\n\n        if (children) {\n            for (var idx = 0, length = children.length; idx < length; idx++) {\n                unbindElementTree(children[idx], destroyWidgets);\n            }\n        }\n    }\n\n    function unbind(dom) {\n        var idx, length;\n\n        dom = $(dom);\n\n        for (idx = 0, length = dom.length; idx < length; idx++ ) {\n            unbindElementTree(dom[idx], false);\n        }\n    }\n\n    function notify(widget, namespace) {\n        var element = widget.element,\n            bindingTarget = element[0].kendoBindingTarget;\n\n        if (bindingTarget) {\n            bind(element, bindingTarget.source, namespace);\n        }\n    }\n\n    function retrievePrimitiveValues(value, valueField) {\n        var values = [];\n        var idx = 0;\n        var length;\n        var item;\n\n        if (!valueField) {\n            return value;\n        }\n\n        if (value instanceof ObservableArray) {\n            for (length = value.length; idx < length; idx++) {\n                item = value[idx];\n                values[idx] = item.get ? item.get(valueField) : item[valueField];\n            }\n            value = values;\n        } else if (value instanceof ObservableObject) {\n            value = value.get(valueField);\n        }\n\n        return value;\n    }\n\n    kendo.unbind = unbind;\n    kendo.bind = bind;\n    kendo.data.binders = binders;\n    kendo.data.Binder = Binder;\n    kendo.notify = notify;\n\n    kendo.observable = function(object) {\n        if (!(object instanceof ObservableObject)) {\n            object = new ObservableObject(object);\n        }\n\n        return object;\n    };\n\n    kendo.observableHierarchy = function(array) {\n        var dataSource = kendo.data.HierarchicalDataSource.create(array);\n\n        function 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