forked from SteveSanderson/knockout.mapping
-
Notifications
You must be signed in to change notification settings - Fork 8
/
knockout.mapping.js
869 lines (740 loc) · 33.9 KB
/
knockout.mapping.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
(function(factory) {
'use strict';
/*jshint sub:true,curly:false*/
/*global ko,require,exports,define,module*/
if (typeof require === "function" && typeof exports === "object" && typeof module === "object") {
// CommonJS or Node: hard-coded dependency on "knockout"
factory(require("knockout"), exports);
}
else if (typeof define === "function" && define["amd"]) {
// AMD anonymous module with hard-coded dependency on "knockout"
define(["knockout", "exports"], factory);
}
else {
// <script> tag: use the global `ko` object, attaching a `mapping` property
if (typeof ko === 'undefined') {
throw new Error('Knockout is required, please ensure it is loaded before loading this mapping plug-in');
}
factory(ko, ko.mapping = {});
}
}(function(ko, exports) {
/*jshint sub:true,curly:false*/
'use strict';
ko.mapping = exports;
var DEBUG=true;
var mappingProperty = "__ko_mapping__";
var realKoDependentObservable = ko.dependentObservable;
var mappingNesting = 0;
var dependentObservables;
var visitedObjects;
var recognizedRootProperties = ["create", "update", "key", "arrayChanged"];
var emptyReturn = {};
var _defaultOptions = {
include: ["_destroy"],
ignore: [],
copy: [],
observe: []
};
var defaultOptions = _defaultOptions;
function unionArrays() {
var args = arguments,
l = args.length,
obj = {},
res = [],
i, j, k;
while (l--) {
k = args[l];
i = k.length;
while (i--) {
j = k[i];
if (!obj[j]) {
obj[j] = 1;
res.push(j);
}
}
}
return res;
}
function extendObject(destination, source) {
var destType;
for (var key in source) {
if (source.hasOwnProperty(key) && source[key]) {
destType = exports.getType(destination[key]);
if (key && destination[key] && destType !== "array" && destType !== "string") {
extendObject(destination[key], source[key]);
}
else {
var bothArrays = exports.getType(destination[key]) === "array" && exports.getType(source[key]) === "array";
if (bothArrays) {
destination[key] = unionArrays(destination[key], source[key]);
}
else {
destination[key] = source[key];
}
}
}
}
}
function merge(obj1, obj2) {
var merged = {};
extendObject(merged, obj1);
extendObject(merged, obj2);
return merged;
}
exports.isMapped = function(viewModel) {
var unwrapped = ko.utils.unwrapObservable(viewModel);
return unwrapped && unwrapped[mappingProperty];
};
exports.fromJS = function(jsObject /*, inputOptions, target*/) {
if (arguments.length === 0) {
throw new Error("When calling ko.fromJS, pass the object you want to convert.");
}
try {
if (!mappingNesting) {
dependentObservables = [];
visitedObjects = new ObjectLookup();
}
mappingNesting++;
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 after the model's observables have been created
if (!--mappingNesting) {
while (dependentObservables.length) {
var DO = dependentObservables.pop();
if (DO) {
DO();
// Move this magic property to the underlying dependent observable
DO.__DO["throttleEvaluation"] = DO["throttleEvaluation"];
}
}
}
// Save any new mapping options in the view model, so that updateFromJS can use them later.
result[mappingProperty] = merge(result[mappingProperty], options);
return result;
}
catch (e) {
mappingNesting = 0;
throw e;
}
};
exports.fromJSON = function(jsonString /*, options, target*/) {
var args = Array.prototype.slice.call(arguments, 0);
args[0] = ko.utils.parseJson(jsonString);
return exports.fromJS.apply(this, args);
};
exports.toJS = function(rootObject, options) {
if (!defaultOptions) exports.resetDefaultOptions();
if (arguments.length === 0) throw new Error("When calling ko.mapping.toJS, pass the object you want to convert.");
if (exports.getType(defaultOptions.ignore) !== "array") throw new Error("ko.mapping.defaultOptions().ignore should be an array.");
if (exports.getType(defaultOptions.include) !== "array") throw new Error("ko.mapping.defaultOptions().include should be an array.");
if (exports.getType(defaultOptions.copy) !== "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 exports.visitModel(rootObject, function(x) {
return ko.utils.unwrapObservable(x);
}, options);
};
exports.toJSON = function(rootObject, options, replacer, space) {
var plainJavaScriptObject = exports.toJS(rootObject, options);
return ko.utils.stringifyJson(plainJavaScriptObject, replacer, space);
};
exports.defaultOptions = function() {
if (arguments.length > 0) {
defaultOptions = arguments[0];
}
else {
return defaultOptions;
}
};
exports.resetDefaultOptions = function() {
defaultOptions = {
include: _defaultOptions.include.slice(0),
ignore: _defaultOptions.ignore.slice(0),
copy: _defaultOptions.copy.slice(0),
observe: _defaultOptions.observe.slice(0)
};
};
exports.getType = function(x) {
if ((x) && (typeof (x) === "object")) {
if (x.constructor === Date) return "date";
if (x.constructor === Array) return "array";
}
return typeof x;
};
function fillOptions(rawOptions, otherOptions) {
var options = merge({}, rawOptions);
// Move recognized root-level properties into a root namespace
for (var i = recognizedRootProperties.length - 1; i >= 0; i--) {
var property = recognizedRootProperties[i];
// Carry on, unless this property is present
if (!options[property]) continue;
// Move the property into the root namespace
if (!(options[""] instanceof Object)) options[""] = {};
options[""][property] = options[property];
delete options[property];
}
if (otherOptions) {
options.ignore = mergeArrays(otherOptions.ignore, options.ignore);
options.include = mergeArrays(otherOptions.include, options.include);
options.copy = mergeArrays(otherOptions.copy, options.copy);
options.observe = mergeArrays(otherOptions.observe, options.observe);
}
options.ignore = mergeArrays(options.ignore, defaultOptions.ignore);
options.include = mergeArrays(options.include, defaultOptions.include);
options.copy = mergeArrays(options.copy, defaultOptions.copy);
options.observe = mergeArrays(options.observe, defaultOptions.observe);
options.mappedProperties = options.mappedProperties || {};
options.copiedProperties = options.copiedProperties || {};
return options;
}
function mergeArrays(a, b) {
if (a === undefined) {
a = [];
}
else if (exports.getType(a) !== "array") {
a = [a];
}
if (b === undefined) {
b = [];
}
else if (exports.getType(b) !== "array") {
b = [b];
}
return ko.utils.arrayGetDistinctValues(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 || {};
if (read && typeof read === "object") { // mirrors condition in knockout implementation of DO's
options = read;
}
var realDeferEvaluation = options.deferEvaluation;
var realIsPure = options.pure;
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) {
// Temporarily revert ko.dependentObservable, since it is used in ko.isWriteableObservable
var tmp = ko.dependentObservable;
ko.dependentObservable = realKoDependentObservable;
var isWriteable = ko.isWriteableObservable(DO);
ko.dependentObservable = tmp;
var wrapped = realKoDependentObservable({
read: function() {
if (!isRemoved) {
ko.utils.arrayRemoveItem(dependentObservables, DO);
isRemoved = true;
}
return DO.apply(DO, arguments);
},
write: isWriteable && function(val) {
return DO(val);
},
deferEvaluation: true
});
if (DEBUG) wrapped._wrapper = true;
wrapped.__DO = DO;
return wrapped;
};
options.deferEvaluation = true; // will either set for just options, or both read/options.
var realDependentObservable = realKoDependentObservable(read, owner, options);
if (!realDeferEvaluation && !realIsPure) {
realDependentObservable = wrap(realDependentObservable);
dependentObservables.push(realDependentObservable);
}
return realDependentObservable;
};
ko.dependentObservable.fn = realKoDependentObservable.fn;
ko.computed = ko.dependentObservable;
var result = callback();
ko.dependentObservable = localDO;
ko.computed = ko.dependentObservable;
return result;
}
function updateViewModel(mappedRootObject, rootObject, options, parentName, parent, parentPropertyName, mappedParent) {
var isArray = exports.getType(ko.utils.unwrapObservable(rootObject)) === "array";
parentPropertyName = parentPropertyName || "";
// If this object was already mapped previously, take the options from there and merge them with our existing ones.
if (exports.isMapped(mappedRootObject)) {
var previousMapping = ko.utils.unwrapObservable(mappedRootObject)[mappingProperty];
options = merge(previousMapping, options);
}
var callbackParams = {
data: rootObject,
parent: mappedParent || parent
};
var hasCreateCallback = function() {
return options[parentName] && options[parentName].create instanceof Function;
};
var createCallback = function(data) {
return withProxyDependentObservable(dependentObservables, function() {
if (ko.utils.unwrapObservable(parent) instanceof Array) {
return options[parentName].create({
data: data || callbackParams.data,
parent: callbackParams.parent,
skip: emptyReturn
});
}
else {
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 (exports.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)) {
var valueToWrite;
if (hasUpdateCallback()) {
valueToWrite = updateCallback(mappedRootObject);
mappedRootObject(valueToWrite);
return valueToWrite;
}
else {
valueToWrite = ko.utils.unwrapObservable(rootObject);
mappedRootObject(valueToWrite);
return valueToWrite;
}
}
else {
var hasCreateOrUpdateCallback = hasCreateCallback() || hasUpdateCallback();
if (hasCreateCallback()) {
mappedRootObject = createCallback();
}
else {
mappedRootObject = ko.observable(ko.utils.unwrapObservable(rootObject));
}
if (hasUpdateCallback()) {
mappedRootObject(updateCallback(mappedRootObject));
}
if (hasCreateOrUpdateCallback) return mappedRootObject;
}
}
}
else {
mappedRootObject = ko.utils.unwrapObservable(mappedRootObject);
if (!mappedRootObject) {
if (hasCreateCallback()) {
var result = createCallback();
if (hasUpdateCallback()) {
result = updateCallback(result);
}
return result;
}
else {
if (hasUpdateCallback()) {
//Removed ambiguous parameter result
return updateCallback();
}
mappedRootObject = {};
}
}
if (hasUpdateCallback()) {
mappedRootObject = updateCallback(mappedRootObject);
}
visitedObjects.save(rootObject, mappedRootObject);
if (hasUpdateCallback()) return mappedRootObject;
// For non-atomic types, visit all properties and update recursively
visitPropertiesOrArrayEntries(rootObject, function(indexer) {
var fullPropertyName = parentPropertyName.length ? parentPropertyName + "." + escapePropertyNameComponent(indexer) : escapePropertyNameComponent(indexer);
if (ko.utils.arrayIndexOf(options.ignore, fullPropertyName) !== -1) {
return;
}
if (ko.utils.arrayIndexOf(options.copy, fullPropertyName) !== -1) {
mappedRootObject[indexer] = rootObject[indexer];
return;
}
if (typeof rootObject[indexer] !== "object" && exports.getType(rootObject[indexer]) !== "array" && options.observe.length > 0 && ko.utils.arrayIndexOf(options.observe, fullPropertyName) === -1) {
mappedRootObject[indexer] = rootObject[indexer];
options.copiedProperties[fullPropertyName] = true;
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 retval = updateViewModel(mappedRootObject[indexer], rootObject[indexer], options, indexer, mappedRootObject, fullPropertyName, mappedRootObject);
var value = prevMappedProperty || retval;
if (options.observe.length > 0 && ko.utils.arrayIndexOf(options.observe, fullPropertyName) === -1) {
mappedRootObject[indexer] = ko.utils.unwrapObservable(value);
options.copiedProperties[fullPropertyName] = true;
return;
}
if (ko.isWriteableObservable(mappedRootObject[indexer])) {
value = ko.utils.unwrapObservable(value);
if (mappedRootObject[indexer]() !== value) {
mappedRootObject[indexer](value);
}
}
else {
value = mappedRootObject[indexer] === undefined ? value : ko.utils.unwrapObservable(value);
mappedRootObject[indexer] = value;
}
options.mappedProperties[fullPropertyName] = true;
});
}
}
else { //mappedRootObject is an array
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.mappedGet = function(item) {
return mappedRootObject()[mappedRootObject.mappedIndexOf(item)];
};
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 i, j, key;
var unwrappedRootObject = ko.utils.unwrapObservable(rootObject);
var itemsByKey = {};
var optimizedKeys = true;
for (i = 0, j = unwrappedRootObject.length; i < j; i++) {
key = keyCallback(unwrappedRootObject[i]);
if (key === undefined || key instanceof Object) {
optimizedKeys = false;
break;
}
itemsByKey[key] = unwrappedRootObject[i];
}
var newContents = [];
var passedOver = 0;
var item, index;
for (i = 0, j = editScript.length; i < j; i++) {
key = editScript[i];
var mappedItem;
var fullPropertyName = parentPropertyName + "[" + escapePropertyNameComponent(i) + "]";
switch (key.status) {
case "added":
item = optimizedKeys ? itemsByKey[key.value] : getItemByKey(ko.utils.unwrapObservable(rootObject), key.value, keyCallback);
mappedItem = updateViewModel(undefined, item, options, parentName, mappedRootObject, fullPropertyName, parent);
if (!hasCreateCallback()) {
mappedItem = ko.utils.unwrapObservable(mappedItem);
}
index = ignorableIndexOf(ko.utils.unwrapObservable(rootObject), item, ignoreIndexOf);
if (mappedItem === emptyReturn) {
passedOver++;
}
else {
newContents[index - passedOver] = mappedItem;
}
ignoreIndexOf[index] = true;
break;
case "retained":
item = optimizedKeys ? itemsByKey[key.value] : getItemByKey(ko.utils.unwrapObservable(rootObject), key.value, keyCallback);
mappedItem = getItemByKey(mappedRootObject, key.value, keyCallback);
updateViewModel(mappedItem, item, options, parentName, mappedRootObject, fullPropertyName, parent);
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 (exports.getType(mappedItem) === "undefined") mappedItem = item;
return ko.utils.unwrapObservable(mappedItem);
}
function getItemByKey(array, key, callback) {
array = ko.utils.unwrapObservable(array);
for (var i = 0, j = array.length; i < j; i++) {
var item = array[i];
if (mapKey(item, callback) === key) return item;
}
throw new Error("When calling ko.update*, the key '" + key + "' was not found!");
}
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 (exports.getType(rootObject) === "array") {
for (var i = 0; i < rootObject.length; i++)
visitorCallback(i);
}
else {
for (var propertyName in rootObject) {
if (rootObject.hasOwnProperty(propertyName)) {
visitorCallback(propertyName);
}
}
}
}
function canHaveProperties(object) {
if (object === null) {
return false;
}
var type = exports.getType(object);
return (type === "object") || (type === "array");
}
// Based on the parentName, this creates a fully classified name of a property
function getPropertyName(parentName, parent, indexer) {
var propertyName = parentName || "";
if (exports.getType(parent) === "array") {
if (parentName) {
propertyName += "[" + escapePropertyNameComponent(indexer) + "]";
}
}
else {
if (parentName) {
propertyName += ".";
}
propertyName += escapePropertyNameComponent(indexer);
}
return propertyName;
}
function escapePropertyNameComponent(indexer) {
var escapedIndexer = (''+indexer)
.replace(/~/g, '~~')
.replace(/\[/g, '~[')
.replace(/]/g, '~]')
.replace(/\./g, '~.');
return escapedIndexer;
}
exports.visitModel = function(rootObject, callback, options) {
options = options || {};
options.visitedObjects = options.visitedObjects || new ObjectLookup();
var mappedRootObject;
var unwrappedRootObject = ko.utils.unwrapObservable(rootObject);
if (!canHaveProperties(unwrappedRootObject)) {
return callback(rootObject, options.parentName);
}
else {
options = fillOptions(options, unwrappedRootObject[mappingProperty]);
// Only do a callback, but ignore the results
callback(rootObject, options.parentName);
mappedRootObject = exports.getType(unwrappedRootObject) === "array" ? [] : {};
}
options.visitedObjects.save(rootObject, mappedRootObject);
var parentName = options.parentName;
visitPropertiesOrArrayEntries(unwrappedRootObject, function(indexer) {
var escapedIndexer = escapePropertyNameComponent(indexer);
if (options.ignore && ko.utils.arrayIndexOf(options.ignore, escapedIndexer) !== -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, escapedIndexer) === -1) {
// ...find out if it's a property we want to explicitly include
if (ko.utils.arrayIndexOf(options.include, escapedIndexer) === -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.
var unwrappedRootMappingProperty = unwrappedRootObject[mappingProperty];
if (unwrappedRootMappingProperty) {
var mappedProperties = unwrappedRootMappingProperty.mappedProperties;
if (mappedProperties && !mappedProperties[escapedIndexer]) {
var copiedProperties = unwrappedRootMappingProperty.copiedProperties;
if (copiedProperties && !copiedProperties[escapedIndexer] && (exports.getType(unwrappedRootObject) !== "array")) {
return;
}
}
}
}
}
switch (exports.getType(ko.utils.unwrapObservable(propertyValue))) {
case "object":
case "array":
case "undefined":
var previouslyMappedValue = options.visitedObjects.get(propertyValue);
mappedRootObject[indexer] = (exports.getType(previouslyMappedValue) !== "undefined") ? previouslyMappedValue : exports.visitModel(propertyValue, callback, options);
break;
default:
mappedRootObject[indexer] = callback(propertyValue, options.parentName);
}
});
return mappedRootObject;
};
function SimpleObjectLookup() {
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);
var value = (existingIndex >= 0) ? values[existingIndex] : undefined;
return value;
};
}
function ObjectLookup() {
var buckets = {};
var findBucket = function(key) {
var bucketKey;
try {
bucketKey = key;//JSON.stringify(key);
}
catch (e) {
bucketKey = "$$$";
}
var bucket = buckets[bucketKey];
if (!buckets.hasOwnProperty(bucketKey)) {
bucket = new SimpleObjectLookup();
buckets[bucketKey] = bucket;
}
return bucket;
};
this.save = function(key, value) {
findBucket(key).save(key, value);
};
this.get = function(key) {
return findBucket(key).get(key);
};
}
}));