mirror of https://github.com/apache/archiva.git
add knockout mapping plugin
git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1226204 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Olivier Lamy
parent
216591f7d5
commit
307cb89d0d
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@ -0,0 +1,678 @@
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// Knockout Mapping plugin v2.0.3
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// (c) 2011 Steven Sanderson, Roy Jacobs - http://knockoutjs.com/
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// License: Ms-Pl (http://www.opensource.org/licenses/ms-pl.html)
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// Google Closure Compiler helpers (used only to make the minified file smaller)
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ko.exportSymbol = function (publicPath, object) {
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var tokens = publicPath.split(".");
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var target = window;
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for (var i = 0; i < tokens.length - 1; i++)
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target = target[tokens[i]];
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target[tokens[tokens.length - 1]] = object;
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};
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ko.exportProperty = function (owner, publicName, object) {
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owner[publicName] = object;
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};
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(function () {
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ko.mapping = {};
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var mappingProperty = "__ko_mapping__";
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var realKoDependentObservable = ko.dependentObservable;
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var mappingNesting = 0;
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var dependentObservables;
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var visitedObjects;
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var _defaultOptions = {
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include: ["_destroy"],
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ignore: [],
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copy: []
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};
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var defaultOptions = _defaultOptions;
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function extendObject(destination, source) {
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for (var key in source) {
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if (source.hasOwnProperty(key) && source[key]) {
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if (key && destination[key] && !(destination[key] instanceof Array)) {
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extendObject(destination[key], source[key]);
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} else {
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destination[key] = source[key];
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}
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}
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}
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}
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function merge(obj1, obj2) {
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var merged = {};
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extendObject(merged, obj1);
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extendObject(merged, obj2);
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return merged;
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}
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ko.mapping.isMapped = function (viewModel) {
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var unwrapped = ko.utils.unwrapObservable(viewModel);
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return unwrapped && unwrapped[mappingProperty];
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}
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ko.mapping.fromJS = function (jsObject /*, inputOptions, target*/ ) {
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if (arguments.length == 0) throw new Error("When calling ko.fromJS, pass the object you want to convert.");
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// When mapping is completed, even with an exception, reset the nesting level
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window.setTimeout(function () {
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mappingNesting = 0;
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}, 0);
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if (!mappingNesting++) {
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dependentObservables = [];
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visitedObjects = new objectLookup();
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}
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var options;
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var target;
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if (arguments.length == 2) {
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if (arguments[1][mappingProperty]) {
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target = arguments[1];
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} else {
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options = arguments[1];
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}
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}
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if (arguments.length == 3) {
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options = arguments[1];
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target = arguments[2];
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}
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if (target) {
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options = merge(options, target[mappingProperty]);
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}
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options = fillOptions(options);
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var result = updateViewModel(target, jsObject, options);
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if (target) {
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result = target;
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}
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// Evaluate any dependent observables that were proxied.
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// Do this in a timeout to defer execution. Basically, any user code that explicitly looks up the DO will perform the first evaluation. Otherwise,
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// it will be done by this code.
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if (!--mappingNesting) {
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window.setTimeout(function () {
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ko.utils.arrayForEach(dependentObservables, function (DO) {
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if (DO) DO();
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});
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}, 0);
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}
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// Save any new mapping options in the view model, so that updateFromJS can use them later.
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result[mappingProperty] = merge(result[mappingProperty], options);
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return result;
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};
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ko.mapping.fromJSON = function (jsonString /*, options, target*/ ) {
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var parsed = ko.utils.parseJson(jsonString);
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arguments[0] = parsed;
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return ko.mapping.fromJS.apply(this, arguments);
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};
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ko.mapping.updateFromJS = function (viewModel) {
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throw new Error("ko.mapping.updateFromJS, use ko.mapping.fromJS instead. Please note that the order of parameters is different!");
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};
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ko.mapping.updateFromJSON = function (viewModel) {
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throw new Error("ko.mapping.updateFromJSON, use ko.mapping.fromJSON instead. Please note that the order of parameters is different!");
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};
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ko.mapping.toJS = function (rootObject, options) {
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if (!defaultOptions) ko.mapping.resetDefaultOptions();
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if (arguments.length == 0) throw new Error("When calling ko.mapping.toJS, pass the object you want to convert.");
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if (!(defaultOptions.ignore instanceof Array)) throw new Error("ko.mapping.defaultOptions().ignore should be an array.");
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if (!(defaultOptions.include instanceof Array)) throw new Error("ko.mapping.defaultOptions().include should be an array.");
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if (!(defaultOptions.copy instanceof Array)) throw new Error("ko.mapping.defaultOptions().copy should be an array.");
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// Merge in the options used in fromJS
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options = fillOptions(options, rootObject[mappingProperty]);
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// We just unwrap everything at every level in the object graph
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return ko.mapping.visitModel(rootObject, function (x) {
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return ko.utils.unwrapObservable(x)
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}, options);
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};
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ko.mapping.toJSON = function (rootObject, options) {
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var plainJavaScriptObject = ko.mapping.toJS(rootObject, options);
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return ko.utils.stringifyJson(plainJavaScriptObject);
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};
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ko.mapping.defaultOptions = function () {
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if (arguments.length > 0) {
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defaultOptions = arguments[0];
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} else {
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return defaultOptions;
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}
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};
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ko.mapping.resetDefaultOptions = function () {
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defaultOptions = {
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include: _defaultOptions.include.slice(0),
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ignore: _defaultOptions.ignore.slice(0),
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copy: _defaultOptions.copy.slice(0)
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};
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};
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function getType(x) {
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if ((x) && (typeof (x) === "object") && (x.constructor == (new Date).constructor)) return "date";
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return typeof x;
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}
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function fillOptions(options, otherOptions) {
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options = options || {};
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// Is there only a root-level mapping present?
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if ((options.create instanceof Function) || (options.update instanceof Function) || (options.key instanceof Function) || (options.arrayChanged instanceof Function)) {
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options = {
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"": options
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};
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}
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if (otherOptions) {
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options.ignore = mergeArrays(otherOptions.ignore, options.ignore);
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options.include = mergeArrays(otherOptions.include, options.include);
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options.copy = mergeArrays(otherOptions.copy, options.copy);
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}
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options.ignore = mergeArrays(options.ignore, defaultOptions.ignore);
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options.include = mergeArrays(options.include, defaultOptions.include);
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options.copy = mergeArrays(options.copy, defaultOptions.copy);
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options.mappedProperties = options.mappedProperties || {};
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return options;
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}
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function mergeArrays(a, b) {
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if (!(a instanceof Array)) {
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if (getType(a) === "undefined") a = [];
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else a = [a];
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}
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if (!(b instanceof Array)) {
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if (getType(b) === "undefined") b = [];
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else b = [b];
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}
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return a.concat(b);
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}
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// When using a 'create' callback, we proxy the dependent observable so that it doesn't immediately evaluate on creation.
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// The reason is that the dependent observables in the user-specified callback may contain references to properties that have not been mapped yet.
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function withProxyDependentObservable(dependentObservables, callback) {
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var localDO = ko.dependentObservable;
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ko.dependentObservable = function (read, owner, options) {
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options = options || {};
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var realDeferEvaluation = options.deferEvaluation;
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if (read && typeof read == "object") { // mirrors condition in knockout implementation of DO's
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options = read;
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}
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var isRemoved = false;
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// We wrap the original dependent observable so that we can remove it from the 'dependentObservables' list we need to evaluate after mapping has
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// completed if the user already evaluated the DO themselves in the meantime.
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var wrap = function (DO) {
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var wrapped = realKoDependentObservable({
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read: function () {
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if (!isRemoved) {
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ko.utils.arrayRemoveItem(dependentObservables, DO);
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isRemoved = true;
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}
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return DO.apply(DO, arguments);
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},
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write: function (val) {
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return DO(val);
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},
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deferEvaluation: true
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});
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wrapped.__ko_proto__ = realKoDependentObservable;
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return wrapped;
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};
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options.deferEvaluation = true; // will either set for just options, or both read/options.
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var realDependentObservable = new realKoDependentObservable(read, owner, options);
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realDependentObservable.__ko_proto__ = realKoDependentObservable;
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if (!realDeferEvaluation) {
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dependentObservables.push(realDependentObservable);
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realDependentObservable = wrap(realDependentObservable);
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}
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return realDependentObservable;
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}
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ko.computed = ko.dependentObservable;
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var result = callback();
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ko.dependentObservable = localDO;
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ko.computed = ko.dependentObservable;
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return result;
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}
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function updateViewModel(mappedRootObject, rootObject, options, parentName, parent, parentPropertyName) {
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var isArray = ko.utils.unwrapObservable(rootObject) instanceof Array;
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parentPropertyName = parentPropertyName || "";
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// If this object was already mapped previously, take the options from there and merge them with our existing ones.
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if (ko.mapping.isMapped(mappedRootObject)) {
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var previousMapping = ko.utils.unwrapObservable(mappedRootObject)[mappingProperty];
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options = merge(previousMapping, options);
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}
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var callbackParams = {
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data: rootObject,
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parent: parent
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};
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var hasCreateCallback = function () {
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return options[parentName] && options[parentName].create instanceof Function;
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};
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var createCallback = function (data) {
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return withProxyDependentObservable(dependentObservables, function () {
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return options[parentName].create({
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data: data || callbackParams.data,
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parent: callbackParams.parent
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});
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});
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};
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var hasUpdateCallback = function () {
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return options[parentName] && options[parentName].update instanceof Function;
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};
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var updateCallback = function (obj, data) {
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var params = {
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data: data || callbackParams.data,
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parent: callbackParams.parent,
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target: ko.utils.unwrapObservable(obj)
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};
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if (ko.isWriteableObservable(obj)) {
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params.observable = obj;
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}
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return options[parentName].update(params);
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}
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var alreadyMapped = visitedObjects.get(rootObject);
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if (alreadyMapped) {
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return alreadyMapped;
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}
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parentName = parentName || "";
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if (!isArray) {
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// For atomic types, do a direct update on the observable
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if (!canHaveProperties(rootObject)) {
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switch (getType(rootObject)) {
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case "function":
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if (hasUpdateCallback()) {
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if (ko.isWriteableObservable(rootObject)) {
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rootObject(updateCallback(rootObject));
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mappedRootObject = rootObject;
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} else {
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mappedRootObject = updateCallback(rootObject);
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}
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} else {
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mappedRootObject = rootObject;
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}
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break;
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default:
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if (ko.isWriteableObservable(mappedRootObject)) {
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if (hasUpdateCallback()) {
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mappedRootObject(updateCallback(mappedRootObject));
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} else {
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mappedRootObject(ko.utils.unwrapObservable(rootObject));
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}
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} else {
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if (hasCreateCallback()) {
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mappedRootObject = createCallback();
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} else {
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mappedRootObject = ko.observable(ko.utils.unwrapObservable(rootObject));
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}
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if (hasUpdateCallback()) {
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mappedRootObject(updateCallback(mappedRootObject));
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}
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}
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break;
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}
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} else {
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mappedRootObject = ko.utils.unwrapObservable(mappedRootObject);
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if (!mappedRootObject) {
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if (hasCreateCallback()) {
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var result = createCallback();
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if (hasUpdateCallback()) {
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result = updateCallback(result);
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}
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return result;
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} else {
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if (hasUpdateCallback()) {
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return updateCallback(result);
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}
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mappedRootObject = {};
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}
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}
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if (hasUpdateCallback()) {
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mappedRootObject = updateCallback(mappedRootObject);
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}
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visitedObjects.save(rootObject, mappedRootObject);
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// For non-atomic types, visit all properties and update recursively
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visitPropertiesOrArrayEntries(rootObject, function (indexer) {
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var fullPropertyName = parentPropertyName.length ? parentPropertyName + "." + indexer : indexer;
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if (ko.utils.arrayIndexOf(options.ignore, fullPropertyName) != -1) {
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return;
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}
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if (ko.utils.arrayIndexOf(options.copy, fullPropertyName) != -1) {
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mappedRootObject[indexer] = rootObject[indexer];
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return;
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}
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// In case we are adding an already mapped property, fill it with the previously mapped property value to prevent recursion.
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// If this is a property that was generated by fromJS, we should use the options specified there
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var prevMappedProperty = visitedObjects.get(rootObject[indexer]);
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var value = prevMappedProperty || updateViewModel(mappedRootObject[indexer], rootObject[indexer], options, indexer, mappedRootObject, fullPropertyName);
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if (ko.isWriteableObservable(mappedRootObject[indexer])) {
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mappedRootObject[indexer](ko.utils.unwrapObservable(value));
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} else {
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mappedRootObject[indexer] = value;
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}
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options.mappedProperties[fullPropertyName] = true;
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});
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}
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} else {
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var changes = [];
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var hasKeyCallback = false;
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var keyCallback = function (x) {
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return x;
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}
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if (options[parentName] && options[parentName].key) {
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keyCallback = options[parentName].key;
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hasKeyCallback = true;
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}
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if (!ko.isObservable(mappedRootObject)) {
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// When creating the new observable array, also add a bunch of utility functions that take the 'key' of the array items into account.
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mappedRootObject = ko.observableArray([]);
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mappedRootObject.mappedRemove = function (valueOrPredicate) {
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var predicate = typeof valueOrPredicate == "function" ? valueOrPredicate : function (value) {
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return value === keyCallback(valueOrPredicate);
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};
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return mappedRootObject.remove(function (item) {
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return predicate(keyCallback(item));
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});
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}
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mappedRootObject.mappedRemoveAll = function (arrayOfValues) {
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var arrayOfKeys = filterArrayByKey(arrayOfValues, keyCallback);
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return mappedRootObject.remove(function (item) {
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return ko.utils.arrayIndexOf(arrayOfKeys, keyCallback(item)) != -1;
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});
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}
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mappedRootObject.mappedDestroy = function (valueOrPredicate) {
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var predicate = typeof valueOrPredicate == "function" ? valueOrPredicate : function (value) {
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return value === keyCallback(valueOrPredicate);
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};
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return mappedRootObject.destroy(function (item) {
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return predicate(keyCallback(item));
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});
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}
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mappedRootObject.mappedDestroyAll = function (arrayOfValues) {
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var arrayOfKeys = filterArrayByKey(arrayOfValues, keyCallback);
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return mappedRootObject.destroy(function (item) {
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return ko.utils.arrayIndexOf(arrayOfKeys, keyCallback(item)) != -1;
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});
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}
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mappedRootObject.mappedIndexOf = function (item) {
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var keys = filterArrayByKey(mappedRootObject(), keyCallback);
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var key = keyCallback(item);
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return ko.utils.arrayIndexOf(keys, key);
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}
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mappedRootObject.mappedCreate = function (value) {
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if (mappedRootObject.mappedIndexOf(value) !== -1) {
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throw new Error("There already is an object with the key that you specified.");
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}
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var item = hasCreateCallback() ? createCallback(value) : value;
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if (hasUpdateCallback()) {
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var newValue = updateCallback(item, value);
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if (ko.isWriteableObservable(item)) {
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item(newValue);
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} else {
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item = newValue;
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}
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}
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mappedRootObject.push(item);
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return item;
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}
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}
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var currentArrayKeys = filterArrayByKey(ko.utils.unwrapObservable(mappedRootObject), keyCallback).sort();
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var newArrayKeys = filterArrayByKey(rootObject, keyCallback);
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if (hasKeyCallback) newArrayKeys.sort();
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var editScript = ko.utils.compareArrays(currentArrayKeys, newArrayKeys);
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var ignoreIndexOf = {};
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var newContents = [];
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for (var i = 0, j = editScript.length; i < j; i++) {
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var key = editScript[i];
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var mappedItem;
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var fullPropertyName = parentPropertyName + "[" + i + "]";
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switch (key.status) {
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case "added":
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var item = getItemByKey(ko.utils.unwrapObservable(rootObject), key.value, keyCallback);
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mappedItem = ko.utils.unwrapObservable(updateViewModel(undefined, item, options, parentName, mappedRootObject, fullPropertyName));
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var index = ignorableIndexOf(ko.utils.unwrapObservable(rootObject), item, ignoreIndexOf);
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newContents[index] = mappedItem;
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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);
|
||||
})();
|
||||
Loading…
Reference in New Issue