!function(factory){"use strict";if("function"==typeof define&&define.amd)define(["knockout"],factory);else if("function"==typeof require&&"object"==typeof exports&&"object"==typeof module){var ko=require("knockout");factory(ko)}else factory(window.ko)}(function(ko){"use strict";var init=function(element,valueAccessor,allBindings,viewModel,bindingContext,sortableOptions){var options=buildOptions(valueAccessor,sortableOptions);["onStart","onEnd","onRemove","onAdd","onUpdate","onSort","onFilter"].forEach(function(e){(options[e]||eventHandlers[e])&&(options[e]=function(eventType,parentVM,parentBindings,handler,e){var itemVM=ko.dataFor(e.item),bindings=ko.utils.peekObservable(parentBindings()),bindingHandlerBinding=bindings.sortable||bindings.draggable,collection=bindingHandlerBinding.collection||bindingHandlerBinding.foreach;handler&&handler(e,itemVM,parentVM,collection,bindings),eventHandlers[eventType]&&eventHandlers[eventType](e,itemVM,parentVM,collection,bindings)}.bind(void 0,e,viewModel,allBindings,options[e]))});var sortableElement=Sortable.create(element,options);return ko.utils.domNodeDisposal.addDisposeCallback(element,function(){sortableElement.destroy()}),ko.bindingHandlers.template.init(element,valueAccessor)},update=function(element,valueAccessor,allBindings,viewModel,bindingContext,sortableOptions){return ko.bindingHandlers.template.update(element,valueAccessor,allBindings,viewModel,bindingContext)},eventHandlers=function(handlers){var moveOperations=[],tryMoveOperation=function(e,itemVM,parentVM,collection,parentBindings){var currentOperation={event:e,itemVM:itemVM,parentVM:parentVM,collection:collection,parentBindings:parentBindings},existingOperation=moveOperations.filter(function(op){return op.itemVM===currentOperation.itemVM})[0];if(existingOperation){moveOperations.splice(moveOperations.indexOf(existingOperation),1);var removeOperation="remove"===currentOperation.event.type?currentOperation:existingOperation,addOperation="add"===currentOperation.event.type?currentOperation:existingOperation;moveItem(itemVM,removeOperation.collection,addOperation.collection,addOperation.event.clone,addOperation.event)}else moveOperations.push(currentOperation)},moveItem=function(itemVM,from,to,clone,e){var fromArray=from(),originalIndex=fromArray.indexOf(itemVM),newIndex=e.newIndex;e.item.previousElementSibling&&(newIndex=fromArray.indexOf(ko.dataFor(e.item.previousElementSibling)),originalIndex>newIndex&&(newIndex+=1)),e.item.parentNode.removeChild(e.item),fromArray.splice(originalIndex,1),from.valueHasMutated(),clone&&from!==to&&(fromArray.splice(originalIndex,0,itemVM),from.valueHasMutated()),to().splice(newIndex,0,itemVM),to.valueHasMutated()};return handlers.onRemove=tryMoveOperation,handlers.onAdd=tryMoveOperation,handlers.onUpdate=function(e,itemVM,parentVM,collection,parentBindings){moveItem(itemVM,collection,collection,!1,e)},handlers}({}),buildOptions=function(bindingOptions,options){var merge=function(into,from){for(var prop in from)"[object Object]"===Object.prototype.toString.call(from[prop])?("[object Object]"!==Object.prototype.toString.call(into[prop])&&(into[prop]={}),into[prop]=merge(into[prop],from[prop])):into[prop]=from[prop];return into},unwrappedOptions=ko.utils.peekObservable(bindingOptions()).options||{};return options=merge({},options),unwrappedOptions.group&&"[object Object]"!==Object.prototype.toString.call(unwrappedOptions.group)&&(unwrappedOptions.group={name:unwrappedOptions.group}),merge(options,unwrappedOptions)};ko.bindingHandlers.draggable={sortableOptions:{group:{pull:"clone",put:!1},sort:!1},init:function(element,valueAccessor,allBindings,viewModel,bindingContext){return init(element,valueAccessor,allBindings,viewModel,0,ko.bindingHandlers.draggable.sortableOptions)},update:function(element,valueAccessor,allBindings,viewModel,bindingContext){return update(element,valueAccessor,allBindings,viewModel,bindingContext,ko.bindingHandlers.draggable.sortableOptions)}},ko.bindingHandlers.sortable={sortableOptions:{group:{pull:!0,put:!0}},init:function(element,valueAccessor,allBindings,viewModel,bindingContext){return init(element,valueAccessor,allBindings,viewModel,0,ko.bindingHandlers.sortable.sortableOptions)},update:function(element,valueAccessor,allBindings,viewModel,bindingContext){return update(element,valueAccessor,allBindings,viewModel,bindingContext,ko.bindingHandlers.sortable.sortableOptions)}}});