--- /dev/null
+// Knockout Mapping plugin v2.0.3
+// (c) 2011 Steven Sanderson, Roy Jacobs - http://knockoutjs.com/
+// License: Ms-Pl (http://www.opensource.org/licenses/ms-pl.html)
+
+// Google Closure Compiler helpers (used only to make the minified file smaller)
+ko.exportSymbol = function (publicPath, object) {
+ var tokens = publicPath.split(".");
+ var target = window;
+ for (var i = 0; i < tokens.length - 1; i++)
+ target = target[tokens[i]];
+ target[tokens[tokens.length - 1]] = object;
+};
+ko.exportProperty = function (owner, publicName, object) {
+ owner[publicName] = object;
+};
+
+(function () {
+ ko.mapping = {};
+
+ var mappingProperty = "__ko_mapping__";
+ var realKoDependentObservable = ko.dependentObservable;
+ var mappingNesting = 0;
+ var dependentObservables;
+ var visitedObjects;
+
+ var _defaultOptions = {
+ include: ["_destroy"],
+ ignore: [],
+ copy: []
+ };
+ var defaultOptions = _defaultOptions;
+
+ function extendObject(destination, source) {
+ for (var key in source) {
+ if (source.hasOwnProperty(key) && source[key]) {
+ if (key && destination[key] && !(destination[key] instanceof Array)) {
+ extendObject(destination[key], source[key]);
+ } else {
+ destination[key] = source[key];
+ }
+ }
+ }
+ }
+
+ function merge(obj1, obj2) {
+ var merged = {};
+ extendObject(merged, obj1);
+ extendObject(merged, obj2);
+
+ return merged;
+ }
+
+ ko.mapping.isMapped = function (viewModel) {
+ var unwrapped = ko.utils.unwrapObservable(viewModel);
+ return unwrapped && unwrapped[mappingProperty];
+ }
+
+ ko.mapping.fromJS = function (jsObject /*, inputOptions, target*/ ) {
+ if (arguments.length == 0) throw new Error("When calling ko.fromJS, pass the object you want to convert.");
+
+ // When mapping is completed, even with an exception, reset the nesting level
+ window.setTimeout(function () {
+ mappingNesting = 0;
+ }, 0);
+
+ if (!mappingNesting++) {
+ dependentObservables = [];
+ visitedObjects = new objectLookup();
+ }
+
+ var options;
+ var target;
+
+ if (arguments.length == 2) {
+ if (arguments[1][mappingProperty]) {
+ target = arguments[1];
+ } else {
+ options = arguments[1];
+ }
+ }
+ if (arguments.length == 3) {
+ options = arguments[1];
+ target = arguments[2];
+ }
+
+ if (target) {
+ options = merge(options, target[mappingProperty]);
+ }
+ options = fillOptions(options);
+
+ var result = updateViewModel(target, jsObject, options);
+ if (target) {
+ result = target;
+ }
+
+ // Evaluate any dependent observables that were proxied.
+ // Do this in a timeout to defer execution. Basically, any user code that explicitly looks up the DO will perform the first evaluation. Otherwise,
+ // it will be done by this code.
+ if (!--mappingNesting) {
+ window.setTimeout(function () {
+ ko.utils.arrayForEach(dependentObservables, function (DO) {
+ if (DO) DO();
+ });
+ }, 0);
+ }
+
+ // Save any new mapping options in the view model, so that updateFromJS can use them later.
+ result[mappingProperty] = merge(result[mappingProperty], options);
+
+ return result;
+ };
+
+ ko.mapping.fromJSON = function (jsonString /*, options, target*/ ) {
+ var parsed = ko.utils.parseJson(jsonString);
+ arguments[0] = parsed;
+ return ko.mapping.fromJS.apply(this, arguments);
+ };
+
+ ko.mapping.updateFromJS = function (viewModel) {
+ throw new Error("ko.mapping.updateFromJS, use ko.mapping.fromJS instead. Please note that the order of parameters is different!");
+ };
+
+ ko.mapping.updateFromJSON = function (viewModel) {
+ throw new Error("ko.mapping.updateFromJSON, use ko.mapping.fromJSON instead. Please note that the order of parameters is different!");
+ };
+
+ ko.mapping.toJS = function (rootObject, options) {
+ if (!defaultOptions) ko.mapping.resetDefaultOptions();
+
+ if (arguments.length == 0) throw new Error("When calling ko.mapping.toJS, pass the object you want to convert.");
+ if (!(defaultOptions.ignore instanceof Array)) throw new Error("ko.mapping.defaultOptions().ignore should be an array.");
+ if (!(defaultOptions.include instanceof Array)) throw new Error("ko.mapping.defaultOptions().include should be an array.");
+ if (!(defaultOptions.copy instanceof Array)) throw new Error("ko.mapping.defaultOptions().copy should be an array.");
+
+ // Merge in the options used in fromJS
+ options = fillOptions(options, rootObject[mappingProperty]);
+
+ // We just unwrap everything at every level in the object graph
+ return ko.mapping.visitModel(rootObject, function (x) {
+ return ko.utils.unwrapObservable(x)
+ }, options);
+ };
+
+ ko.mapping.toJSON = function (rootObject, options) {
+ var plainJavaScriptObject = ko.mapping.toJS(rootObject, options);
+ return ko.utils.stringifyJson(plainJavaScriptObject);
+ };
+
+ ko.mapping.defaultOptions = function () {
+ if (arguments.length > 0) {
+ defaultOptions = arguments[0];
+ } else {
+ return defaultOptions;
+ }
+ };
+
+ ko.mapping.resetDefaultOptions = function () {
+ defaultOptions = {
+ include: _defaultOptions.include.slice(0),
+ ignore: _defaultOptions.ignore.slice(0),
+ copy: _defaultOptions.copy.slice(0)
+ };
+ };
+
+ function getType(x) {
+ if ((x) && (typeof (x) === "object") && (x.constructor == (new Date).constructor)) return "date";
+ return typeof x;
+ }
+
+ function fillOptions(options, otherOptions) {
+ options = options || {};
+
+ // Is there only a root-level mapping present?
+ if ((options.create instanceof Function) || (options.update instanceof Function) || (options.key instanceof Function) || (options.arrayChanged instanceof Function)) {
+ options = {
+ "": options
+ };
+ }
+
+ if (otherOptions) {
+ options.ignore = mergeArrays(otherOptions.ignore, options.ignore);
+ options.include = mergeArrays(otherOptions.include, options.include);
+ options.copy = mergeArrays(otherOptions.copy, options.copy);
+ }
+ options.ignore = mergeArrays(options.ignore, defaultOptions.ignore);
+ options.include = mergeArrays(options.include, defaultOptions.include);
+ options.copy = mergeArrays(options.copy, defaultOptions.copy);
+
+ options.mappedProperties = options.mappedProperties || {};
+ return options;
+ }
+
+ function mergeArrays(a, b) {
+ if (!(a instanceof Array)) {
+ if (getType(a) === "undefined") a = [];
+ else a = [a];
+ }
+ if (!(b instanceof Array)) {
+ if (getType(b) === "undefined") b = [];
+ else b = [b];
+ }
+ return a.concat(b);
+ }
+
+ // When using a 'create' callback, we proxy the dependent observable so that it doesn't immediately evaluate on creation.
+ // The reason is that the dependent observables in the user-specified callback may contain references to properties that have not been mapped yet.
+ function withProxyDependentObservable(dependentObservables, callback) {
+ var localDO = ko.dependentObservable;
+ ko.dependentObservable = function (read, owner, options) {
+ options = options || {};
+
+ var realDeferEvaluation = options.deferEvaluation;
+
+ if (read && typeof read == "object") { // mirrors condition in knockout implementation of DO's
+ options = read;
+ }
+
+ var isRemoved = false;
+
+ // We wrap the original dependent observable so that we can remove it from the 'dependentObservables' list we need to evaluate after mapping has
+ // completed if the user already evaluated the DO themselves in the meantime.
+ var wrap = function (DO) {
+ var wrapped = realKoDependentObservable({
+ read: function () {
+ if (!isRemoved) {
+ ko.utils.arrayRemoveItem(dependentObservables, DO);
+ isRemoved = true;
+ }
+ return DO.apply(DO, arguments);
+ },
+ write: function (val) {
+ return DO(val);
+ },
+ deferEvaluation: true
+ });
+ wrapped.__ko_proto__ = realKoDependentObservable;
+ return wrapped;
+ };
+
+ options.deferEvaluation = true; // will either set for just options, or both read/options.
+ var realDependentObservable = new realKoDependentObservable(read, owner, options);
+ realDependentObservable.__ko_proto__ = realKoDependentObservable;
+
+ if (!realDeferEvaluation) {
+ dependentObservables.push(realDependentObservable);
+ realDependentObservable = wrap(realDependentObservable);
+ }
+
+ return realDependentObservable;
+ }
+ ko.computed = ko.dependentObservable;
+ var result = callback();
+ ko.dependentObservable = localDO;
+ ko.computed = ko.dependentObservable;
+ return result;
+ }
+
+ function updateViewModel(mappedRootObject, rootObject, options, parentName, parent, parentPropertyName) {
+ var isArray = ko.utils.unwrapObservable(rootObject) instanceof Array;
+
+ parentPropertyName = parentPropertyName || "";
+
+ // If this object was already mapped previously, take the options from there and merge them with our existing ones.
+ if (ko.mapping.isMapped(mappedRootObject)) {
+ var previousMapping = ko.utils.unwrapObservable(mappedRootObject)[mappingProperty];
+ options = merge(previousMapping, options);
+ }
+
+ var callbackParams = {
+ data: rootObject,
+ parent: parent
+ };
+
+ var hasCreateCallback = function () {
+ return options[parentName] && options[parentName].create instanceof Function;
+ };
+
+ var createCallback = function (data) {
+ return withProxyDependentObservable(dependentObservables, function () {
+ return options[parentName].create({
+ data: data || callbackParams.data,
+ parent: callbackParams.parent
+ });
+ });
+ };
+
+ var hasUpdateCallback = function () {
+ return options[parentName] && options[parentName].update instanceof Function;
+ };
+
+ var updateCallback = function (obj, data) {
+ var params = {
+ data: data || callbackParams.data,
+ parent: callbackParams.parent,
+ target: ko.utils.unwrapObservable(obj)
+ };
+
+ if (ko.isWriteableObservable(obj)) {
+ params.observable = obj;
+ }
+
+ return options[parentName].update(params);
+ }
+
+ var alreadyMapped = visitedObjects.get(rootObject);
+ if (alreadyMapped) {
+ return alreadyMapped;
+ }
+
+ parentName = parentName || "";
+
+ if (!isArray) {
+ // For atomic types, do a direct update on the observable
+ if (!canHaveProperties(rootObject)) {
+ switch (getType(rootObject)) {
+ case "function":
+ if (hasUpdateCallback()) {
+ if (ko.isWriteableObservable(rootObject)) {
+ rootObject(updateCallback(rootObject));
+ mappedRootObject = rootObject;
+ } else {
+ mappedRootObject = updateCallback(rootObject);
+ }
+ } else {
+ mappedRootObject = rootObject;
+ }
+ break;
+ default:
+ if (ko.isWriteableObservable(mappedRootObject)) {
+ if (hasUpdateCallback()) {
+ mappedRootObject(updateCallback(mappedRootObject));
+ } else {
+ mappedRootObject(ko.utils.unwrapObservable(rootObject));
+ }
+ } else {
+ if (hasCreateCallback()) {
+ mappedRootObject = createCallback();
+ } else {
+ mappedRootObject = ko.observable(ko.utils.unwrapObservable(rootObject));
+ }
+
+ if (hasUpdateCallback()) {
+ mappedRootObject(updateCallback(mappedRootObject));
+ }
+ }
+ break;
+ }
+
+ } else {
+ mappedRootObject = ko.utils.unwrapObservable(mappedRootObject);
+ if (!mappedRootObject) {
+ if (hasCreateCallback()) {
+ var result = createCallback();
+
+ if (hasUpdateCallback()) {
+ result = updateCallback(result);
+ }
+
+ return result;
+ } else {
+ if (hasUpdateCallback()) {
+ return updateCallback(result);
+ }
+
+ mappedRootObject = {};
+ }
+ }
+
+ if (hasUpdateCallback()) {
+ mappedRootObject = updateCallback(mappedRootObject);
+ }
+
+ visitedObjects.save(rootObject, mappedRootObject);
+
+ // For non-atomic types, visit all properties and update recursively
+ visitPropertiesOrArrayEntries(rootObject, function (indexer) {
+ var fullPropertyName = parentPropertyName.length ? parentPropertyName + "." + indexer : indexer;
+
+ if (ko.utils.arrayIndexOf(options.ignore, fullPropertyName) != -1) {
+ return;
+ }
+
+ if (ko.utils.arrayIndexOf(options.copy, fullPropertyName) != -1) {
+ mappedRootObject[indexer] = rootObject[indexer];
+ return;
+ }
+
+ // In case we are adding an already mapped property, fill it with the previously mapped property value to prevent recursion.
+ // If this is a property that was generated by fromJS, we should use the options specified there
+ var prevMappedProperty = visitedObjects.get(rootObject[indexer]);
+ var value = prevMappedProperty || updateViewModel(mappedRootObject[indexer], rootObject[indexer], options, indexer, mappedRootObject, fullPropertyName);
+
+ if (ko.isWriteableObservable(mappedRootObject[indexer])) {
+ mappedRootObject[indexer](ko.utils.unwrapObservable(value));
+ } else {
+ mappedRootObject[indexer] = value;
+ }
+
+ options.mappedProperties[fullPropertyName] = true;
+ });
+ }
+ } else {
+ var changes = [];
+
+ var hasKeyCallback = false;
+ var keyCallback = function (x) {
+ return x;
+ }
+ if (options[parentName] && options[parentName].key) {
+ keyCallback = options[parentName].key;
+ hasKeyCallback = true;
+ }
+
+ if (!ko.isObservable(mappedRootObject)) {
+ // When creating the new observable array, also add a bunch of utility functions that take the 'key' of the array items into account.
+ mappedRootObject = ko.observableArray([]);
+
+ mappedRootObject.mappedRemove = function (valueOrPredicate) {
+ var predicate = typeof valueOrPredicate == "function" ? valueOrPredicate : function (value) {
+ return value === keyCallback(valueOrPredicate);
+ };
+ return mappedRootObject.remove(function (item) {
+ return predicate(keyCallback(item));
+ });
+ }
+
+ mappedRootObject.mappedRemoveAll = function (arrayOfValues) {
+ var arrayOfKeys = filterArrayByKey(arrayOfValues, keyCallback);
+ return mappedRootObject.remove(function (item) {
+ return ko.utils.arrayIndexOf(arrayOfKeys, keyCallback(item)) != -1;
+ });
+ }
+
+ mappedRootObject.mappedDestroy = function (valueOrPredicate) {
+ var predicate = typeof valueOrPredicate == "function" ? valueOrPredicate : function (value) {
+ return value === keyCallback(valueOrPredicate);
+ };
+ return mappedRootObject.destroy(function (item) {
+ return predicate(keyCallback(item));
+ });
+ }
+
+ mappedRootObject.mappedDestroyAll = function (arrayOfValues) {
+ var arrayOfKeys = filterArrayByKey(arrayOfValues, keyCallback);
+ return mappedRootObject.destroy(function (item) {
+ return ko.utils.arrayIndexOf(arrayOfKeys, keyCallback(item)) != -1;
+ });
+ }
+
+ mappedRootObject.mappedIndexOf = function (item) {
+ var keys = filterArrayByKey(mappedRootObject(), keyCallback);
+ var key = keyCallback(item);
+ return ko.utils.arrayIndexOf(keys, key);
+ }
+
+ mappedRootObject.mappedCreate = function (value) {
+ if (mappedRootObject.mappedIndexOf(value) !== -1) {
+ throw new Error("There already is an object with the key that you specified.");
+ }
+
+ var item = hasCreateCallback() ? createCallback(value) : value;
+ if (hasUpdateCallback()) {
+ var newValue = updateCallback(item, value);
+ if (ko.isWriteableObservable(item)) {
+ item(newValue);
+ } else {
+ item = newValue;
+ }
+ }
+ mappedRootObject.push(item);
+ return item;
+ }
+ }
+
+ var currentArrayKeys = filterArrayByKey(ko.utils.unwrapObservable(mappedRootObject), keyCallback).sort();
+ var newArrayKeys = filterArrayByKey(rootObject, keyCallback);
+ if (hasKeyCallback) newArrayKeys.sort();
+ var editScript = ko.utils.compareArrays(currentArrayKeys, newArrayKeys);
+
+ var ignoreIndexOf = {};
+
+ var newContents = [];
+ for (var i = 0, j = editScript.length; i < j; i++) {
+ var key = editScript[i];
+ var mappedItem;
+ var fullPropertyName = parentPropertyName + "[" + i + "]";
+ switch (key.status) {
+ case "added":
+ var item = getItemByKey(ko.utils.unwrapObservable(rootObject), key.value, keyCallback);
+ mappedItem = ko.utils.unwrapObservable(updateViewModel(undefined, item, options, parentName, mappedRootObject, fullPropertyName));
+
+ var index = ignorableIndexOf(ko.utils.unwrapObservable(rootObject), item, ignoreIndexOf);
+ newContents[index] = mappedItem;
+ ignoreIndexOf[index] = true;
+ break;
+ case "retained":
+ var item = getItemByKey(ko.utils.unwrapObservable(rootObject), key.value, keyCallback);
+ mappedItem = getItemByKey(mappedRootObject, key.value, keyCallback);
+ updateViewModel(mappedItem, item, options, parentName, mappedRootObject, fullPropertyName);
+
+ var index = ignorableIndexOf(ko.utils.unwrapObservable(rootObject), item, ignoreIndexOf);
+ newContents[index] = mappedItem;
+ ignoreIndexOf[index] = true;
+ break;
+ case "deleted":
+ mappedItem = getItemByKey(mappedRootObject, key.value, keyCallback);
+ break;
+ }
+
+ changes.push({
+ event: key.status,
+ item: mappedItem
+ });
+ }
+
+ mappedRootObject(newContents);
+
+ if (options[parentName] && options[parentName].arrayChanged) {
+ ko.utils.arrayForEach(changes, function (change) {
+ options[parentName].arrayChanged(change.event, change.item);
+ });
+ }
+ }
+
+ return mappedRootObject;
+ }
+
+ function ignorableIndexOf(array, item, ignoreIndices) {
+ for (var i = 0, j = array.length; i < j; i++) {
+ if (ignoreIndices[i] === true) continue;
+ if (array[i] === item) return i;
+ }
+ return null;
+ }
+
+ function mapKey(item, callback) {
+ var mappedItem;
+ if (callback) mappedItem = callback(item);
+ if (getType(mappedItem) === "undefined") mappedItem = item;
+
+ return ko.utils.unwrapObservable(mappedItem);
+ }
+
+ function getItemByKey(array, key, callback) {
+ var filtered = ko.utils.arrayFilter(ko.utils.unwrapObservable(array), function (item) {
+ return mapKey(item, callback) === key;
+ });
+
+ if (filtered.length == 0) throw new Error("When calling ko.update*, the key '" + key + "' was not found!");
+ if ((filtered.length > 1) && (canHaveProperties(filtered[0]))) throw new Error("When calling ko.update*, the key '" + key + "' was not unique!");
+
+ return filtered[0];
+ }
+
+ function filterArrayByKey(array, callback) {
+ return ko.utils.arrayMap(ko.utils.unwrapObservable(array), function (item) {
+ if (callback) {
+ return mapKey(item, callback);
+ } else {
+ return item;
+ }
+ });
+ }
+
+ function visitPropertiesOrArrayEntries(rootObject, visitorCallback) {
+ if (rootObject instanceof Array) {
+ for (var i = 0; i < rootObject.length; i++)
+ visitorCallback(i);
+ } else {
+ for (var propertyName in rootObject)
+ visitorCallback(propertyName);
+ }
+ };
+
+ function canHaveProperties(object) {
+ var type = getType(object);
+ return (type === "object") && (object !== null) && (type !== "undefined");
+ }
+
+ // Based on the parentName, this creates a fully classified name of a property
+
+ function getPropertyName(parentName, parent, indexer) {
+ var propertyName = parentName || "";
+ if (parent instanceof Array) {
+ if (parentName) {
+ propertyName += "[" + indexer + "]";
+ }
+ } else {
+ if (parentName) {
+ propertyName += ".";
+ }
+ propertyName += indexer;
+ }
+ return propertyName;
+ }
+
+ ko.mapping.visitModel = function (rootObject, callback, options) {
+ options = options || {};
+ options.visitedObjects = options.visitedObjects || new objectLookup();
+
+ if (!options.parentName) {
+ options = fillOptions(options);
+ }
+
+ var mappedRootObject;
+ var unwrappedRootObject = ko.utils.unwrapObservable(rootObject);
+ if (!canHaveProperties(unwrappedRootObject)) {
+ return callback(rootObject, options.parentName);
+ } else {
+ // Only do a callback, but ignore the results
+ callback(rootObject, options.parentName);
+ mappedRootObject = unwrappedRootObject instanceof Array ? [] : {};
+ }
+
+ options.visitedObjects.save(rootObject, mappedRootObject);
+
+ var parentName = options.parentName;
+ visitPropertiesOrArrayEntries(unwrappedRootObject, function (indexer) {
+ if (options.ignore && ko.utils.arrayIndexOf(options.ignore, indexer) != -1) return;
+
+ var propertyValue = unwrappedRootObject[indexer];
+ options.parentName = getPropertyName(parentName, unwrappedRootObject, indexer);
+
+ // If we don't want to explicitly copy the unmapped property...
+ if (ko.utils.arrayIndexOf(options.copy, indexer) === -1) {
+ // ...find out if it's a property we want to explicitly include
+ if (ko.utils.arrayIndexOf(options.include, indexer) === -1) {
+ // The mapped properties object contains all the properties that were part of the original object.
+ // If a property does not exist, and it is not because it is part of an array (e.g. "myProp[3]"), then it should not be unmapped.
+ if (unwrappedRootObject[mappingProperty] && unwrappedRootObject[mappingProperty].mappedProperties && !unwrappedRootObject[mappingProperty].mappedProperties[indexer] && !(unwrappedRootObject instanceof Array)) {
+ return;
+ }
+ }
+ }
+
+ var outputProperty;
+ switch (getType(ko.utils.unwrapObservable(propertyValue))) {
+ case "object":
+ case "undefined":
+ var previouslyMappedValue = options.visitedObjects.get(propertyValue);
+ mappedRootObject[indexer] = (getType(previouslyMappedValue) !== "undefined") ? previouslyMappedValue : ko.mapping.visitModel(propertyValue, callback, options);
+ break;
+ default:
+ mappedRootObject[indexer] = callback(propertyValue, options.parentName);
+ }
+ });
+
+ return mappedRootObject;
+ }
+
+ function objectLookup() {
+ var keys = [];
+ var values = [];
+ this.save = function (key, value) {
+ var existingIndex = ko.utils.arrayIndexOf(keys, key);
+ if (existingIndex >= 0) values[existingIndex] = value;
+ else {
+ keys.push(key);
+ values.push(value);
+ }
+ };
+ this.get = function (key) {
+ var existingIndex = ko.utils.arrayIndexOf(keys, key);
+ return (existingIndex >= 0) ? values[existingIndex] : undefined;
+ };
+ };
+
+ ko.exportSymbol('ko.mapping', ko.mapping);
+ ko.exportSymbol('ko.mapping.fromJS', ko.mapping.fromJS);
+ ko.exportSymbol('ko.mapping.fromJSON', ko.mapping.fromJSON);
+ ko.exportSymbol('ko.mapping.isMapped', ko.mapping.isMapped);
+ ko.exportSymbol('ko.mapping.defaultOptions', ko.mapping.defaultOptions);
+ ko.exportSymbol('ko.mapping.toJS', ko.mapping.toJS);
+ ko.exportSymbol('ko.mapping.toJSON', ko.mapping.toJSON);
+ ko.exportSymbol('ko.mapping.updateFromJS', ko.mapping.updateFromJS);
+ ko.exportSymbol('ko.mapping.updateFromJSON', ko.mapping.updateFromJSON);
+ ko.exportSymbol('ko.mapping.visitModel', ko.mapping.visitModel);
+})();
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