Exemplo de minicrud, em funcionamento: http://jsbin.com/ilalet/1/edit

app.js

function Pessoa(data) {
    this.Nome = ko.observable(data ? data.Nome : "");
    this.Idade = ko.observable(data ? data.Idade : "");
    this.Nascimento = ko.observable(data ? data.Nascimento : "");

    this.toString = function () {
        return this.Nome();
    }.bind(this);
}

function vm() {
    var self = this;
    self.pessoas = ko.observableArray();
}

ko.bindingHandlers.minicrud = {
    init: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
        var listGetter = valueAccessor();
        var list = ko.utils.unwrapObservable(listGetter);
        var allBindings = allBindingsAccessor();
        var type = allBindings.itemType;

        var minicrudState = function () {
            var self = this;

            self.isNew = ko.observable(true);
            self.selectedIndex = ko.observable(null);
            self.currentItem = ko.observable(new type());
            self.editVisible = ko.observable(false);
            self.deleteVisible = ko.observable(false);
            self.clearVisible = ko.observable(true);
            self.data = listGetter;

            self.window = {
                isOpen: ko.observable(false),
                title: ko.computed(function () {
                    return self.isNew() ? "Nova pessoa" : self.currentItem();
                }),
                open: function () {
                    if (!self.isNew()) {
                        var item = ko.mapping.fromJS(ko.toJS(self.data()[self.selectedIndex()]));
                        self.currentItem(item);
                    }

                    this.element.data("kendoWindow").center();
                },
                close: function () {
                    //self.resetCurrentItem();
                },
                save: function () {
                    if (self.isNew()) {
                        var obj = new type(ko.toJS(self.currentItem()));
                        self.data.push(obj);
                    }
                    else {
                        var itemToChange = self.data()[self.selectedIndex()];
                        var item = ko.toJS(self.currentItem());
                        self.currentItem.notifySubscribers();

                        for (var prop in item) {
                            if (ko.isObservable(itemToChange[prop]))
                                itemToChange[prop](item[prop]);
                        }

                        var grid = $(".minicrud-grid", element).data("kendoGrid");
                        grid.select(grid.table.find("tr").eq(self.selectedIndex()));
                    }
                    self.window.isOpen(false);
                },
                cancel: function () {
                    self.window.isOpen(false);
                }
            };

            self.resetCurrentItem = function () {
                var item = new type();
                for (var prop in item) {
                    if (ko.isObservable(item[prop]))
                        self.currentItem()[prop](item[prop]());
                }
            };

            self.selectionChanged = function () {
                self.isNew(false);
                self.selectedIndex(this.select().index());
            };

            self.list = ko.computed(function () {
                return self.data().length === 0
                    ? ko.observableArray([self.currentItem])
                    : self.data;
            }, self);
        };

        var minicrud = new minicrudState();

        ko.applyBindingsToDescendants(minicrud, element);

        $(".minicrud-new", element).click(function () {
            minicrud.isNew(true);
            if (minicrud.data().length === 0) {
                var obj = new type(ko.toJS(minicrud.currentItem()));
                minicrud.data.push(obj);
            }
            minicrud.resetCurrentItem();
            minicrud.window.isOpen(true);
        });

        $(".minicrud-edit", element).click(function () {
            minicrud.isNew(false);
            minicrud.window.isOpen(true);
        });

        $(".minicrud-delete", element).click(function () {
            listGetter.remove(list[minicrud.selectedIndex()]);
        });

        $(".minicrud-clear", element).click(function () {
            listGetter.remove(list[minicrud.selectedIndex()]);
        });

        ko.utils.domData.set(element, "__ko_withIfBindingData", {});
        return { 'controlsDescendantBindings': true };
    },
    update: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
    }
};

$(function () {
    ko.applyBindings(window.vc = new vm());
});

index.html

<!DOCTYPE html>
<html>
<head>
    <link href="http://cdn.kendostatic.com/2013.1.319/styles/kendo.common.min.css" rel="stylesheet" type="text/css" />
    <link href="http://cdn.kendostatic.com/2013.1.319/styles/kendo.rtl.min.css" rel="stylesheet" type="text/css" />
    <link href="http://cdn.kendostatic.com/2013.1.319/styles/kendo.metro.min.css" rel="stylesheet" type="text/css" />
    <link href="http://cdn.kendostatic.com/2013.1.319/styles/kendo.metro.min.css" rel="stylesheet" type="text/css" />
    <link href="http://cdn.kendostatic.com/2013.1.319/styles/kendo.dataviz.metro.min.css" rel="stylesheet" type="text/css" />
    <link href="http://cdn.kendostatic.com/2013.1.319/styles/kendo.mobile.all.min.css" rel="stylesheet" type="text/css" />
    <script src="http://cdnjs.cloudflare.com/ajax/libs/knockout/2.2.0/knockout-min.js"></script>
    <script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
    <script src="http://cdn.kendostatic.com/2013.1.319/js/kendo.all.min.js"></script>
    <script src="http://rniemeyer.github.com/knockout-kendo/js/knockout-kendo.min.js"></script>
    <script src="https://gist.github.com/AlbertoMonteiro/5282985/raw/71f98b4a040ff9e4ce323e6b10930afffe4fba6f/knockout.mapping.js"></script>
    <script src="app.js"></script>
    <title>Minicrud</title>
</head>

<body>
    <div class="minicrud" data-bind="minicrud: pessoas, itemType: Pessoa">
        <div class="minicrud-single" data-bind="with: list()()[0], visible: data().length <= 1">
            <label>Nome</label>
            <input type="text" data-bind="value: Nome" class="k-input" />
            <br />
            <label>Idade</label>
            <input type="text" data-bind="value: Idade" class="k-input" />
            <br />
            <label>Nascimento</label>
            <input type="text" data-bind="kendoDatePicker: Nascimento" />
        </div>
        <div data-bind="visible: data().length >= 2">
            <table class="minicrud-grid" data-bind="kendoGrid: {data: data, selectable:true,change: selectionChanged, resizable:true}">
                <thead>
                    <tr>
                        <th data-field="Nome">Nome</th>
                        <th data-field="Idade">Idade</th>
                        <th data-template="#=kendo.toString(Nascimento,'dd/MM/yyyy')#">Nascimento</th>
                    </tr>
                </thead>
            </table>
        </div>
        <div class="minicrud-window" style="display: none" data-bind="with: currentItem, kendoWindow: { isOpen: window.isOpen, title: window.title, modal: true, resizable: false, open: window.open, close: window.close }">
            <label>Nome</label>
            <input type="text" data-bind="value: Nome" class="k-input" />
            <br />
            <label>Idade</label>
            <input type="text" data-bind="value: Idade" class="k-input" />
            <br />
            <label>Nascimento</label>
            <input type="text" data-bind="kendoDatePicker: Nascimento" />
            <br />
            <button class="k-button" data-bind="click: $parent.window.save">Salvar</button>
            <button class="k-button" data-bind="click: $parent.window.cancel">Cancelar</button>
        </div>
        <div class="minicrud-actions">
            <button class="k-button minicrud-new">Novo</button>
            <button class="k-button minicrud-edit" data-bind="visible: data().length >= 2">Editar</button>
            <button class="k-button minicrud-delete" data-bind="visible: data().length >= 2">Excluir</button>
            <button class="k-button minicrud-clear" data-bind="visible: data().length <= 1">Limpar</button>
        </div>
    </div>
</body>
</html>

knockout.mapping.js

/// Knockout Mapping plugin v2.4.1
/// (c) 2013 Steven Sanderson, Roy Jacobs - http://knockoutjs.com/
/// License: MIT (http://www.opensource.org/licenses/mit-license.php)
(function(e){"function"===typeof require&&"object"===typeof exports&&"object"===typeof module?e(require("knockout"),exports):"function"===typeof define&&define.amd?define(["knockout","exports"],e):e(ko,ko.mapping={})})(function(e,f){function y(b,c){var a,d;for(d in c)if(c.hasOwnProperty(d)&&c[d])if(a=f.getType(b[d]),d&&b[d]&&"array"!==a&&"string"!==a)y(b[d],c[d]);else if("array"===f.getType(b[d])&&"array"===f.getType(c[d])){a=b;for(var e=d,l=b[d],n=c[d],t={},g=l.length-1;0<=g;--g)t[l[g]]=l[g];for(g=
n.length-1;0<=g;--g)t[n[g]]=n[g];l=[];n=void 0;for(n in t)l.push(t[n]);a[e]=l}else b[d]=c[d]}function E(b,c){var a={};y(a,b);y(a,c);return a}function z(b,c){for(var a=E({},b),e=L.length-1;0<=e;e--){var f=L[e];a[f]&&(a[""]instanceof Object||(a[""]={}),a[""][f]=a[f],delete a[f])}c&&(a.ignore=h(c.ignore,a.ignore),a.include=h(c.include,a.include),a.copy=h(c.copy,a.copy),a.observe=h(c.observe,a.observe));a.ignore=h(a.ignore,j.ignore);a.include=h(a.include,j.include);a.copy=h(a.copy,j.copy);a.observe=h(a.observe,
j.observe);a.mappedProperties=a.mappedProperties||{};a.copiedProperties=a.copiedProperties||{};return a}function h(b,c){"array"!==f.getType(b)&&(b="undefined"===f.getType(b)?[]:[b]);"array"!==f.getType(c)&&(c="undefined"===f.getType(c)?[]:[c]);return e.utils.arrayGetDistinctValues(b.concat(c))}function F(b,c,a,d,k,l,n){var t="array"===f.getType(e.utils.unwrapObservable(c));l=l||"";if(f.isMapped(b)){var g=e.utils.unwrapObservable(b)[p];a=E(g,a)}var j=n||k,h=function(){return a[d]&&a[d].create instanceof
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a[d]&&a[d].key&&(m=a[d].key,s=!0);e.isObservable(b)||(b=e.observableArray([]),b.mappedRemove=function(a){var c="function"==typeof a?a:function(b){return b===m(a)};return b.remove(function(a){return c(m(a))})},b.mappedRemoveAll=function(a){var c=C(a,m);return b.remove(function(a){return-1!=e.utils.arrayIndexOf(c,m(a))})},b.mappedDestroy=function(a){var c="function"==typeof a?a:function(b){return b===m(a)};return b.destroy(function(a){return c(m(a))})},b.mappedDestroyAll=function(a){var c=C(a,m);return b.destroy(function(a){return-1!=
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