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feat(pipes): replaces iterable and key value diffing pipes with services 

BREAKING CHANGE:
    Directives that previously injected Pipes to get iterableDiff or keyvalueDiff, now should inject IterableDiffers and KeyValueDiffers.
This commit is contained in:
vsavkin 2015-07-31 12:23:50 -07:00
parent c20a5d65d8
commit 392de4af67
20 changed files with 595 additions and 260 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
modules/angular2/change_detection.ts
View File

@ -23,6 +23,12 @@ export {
defaultPipes,
Pipe,
Pipes,
IterableDiffers,
IterableDiffer,
IterableDifferFactory,
KeyValueDiffers,
KeyValueDiffer,
KeyValueDifferFactory,
PipeFactory,
BasePipe,
NullPipe,

2
modules/angular2/pipes.ts
View File

@ -9,8 +9,6 @@ export {UpperCasePipe} from './src/change_detection/pipes/uppercase_pipe';
export {LowerCasePipe} from './src/change_detection/pipes/lowercase_pipe';
export {ObservablePipe} from './src/change_detection/pipes/observable_pipe';
export {JsonPipe} from './src/change_detection/pipes/json_pipe';
export {IterableChanges} from './src/change_detection/pipes/iterable_changes';
export {KeyValueChanges} from './src/change_detection/pipes/keyvalue_changes';
export {DatePipe} from './src/change_detection/pipes/date_pipe';
export {DecimalPipe, PercentPipe, CurrencyPipe} from './src/change_detection/pipes/number_pipe';
export {LimitToPipe} from './src/change_detection/pipes/limit_to_pipe';

22
modules/angular2/src/change_detection/change_detection.ts
View File

@ -3,8 +3,10 @@ import {PregenProtoChangeDetector} from './pregen_proto_change_detector';
import {DynamicProtoChangeDetector} from './proto_change_detector';
import {PipeFactory, Pipe} from './pipes/pipe';
import {Pipes} from './pipes/pipes';
import {IterableChangesFactory} from './pipes/iterable_changes';
import {KeyValueChangesFactory} from './pipes/keyvalue_changes';
import {IterableDiffers, IterableDifferFactory} from './differs/iterable_differs';
import {DefaultIterableDifferFactory} from './differs/default_iterable_differ';
import {KeyValueDiffers, KeyValueDifferFactory} from './differs/keyvalue_differs';
import {DefaultKeyValueDifferFactory} from './differs/default_keyvalue_differ';
import {ObservablePipeFactory} from './pipes/observable_pipe';
import {PromisePipeFactory} from './pipes/promise_pipe';
import {UpperCasePipe} from './pipes/uppercase_pipe';
@ -52,6 +54,8 @@ export {DirectiveIndex, DirectiveRecord} from './directive_record';
export {DynamicChangeDetector} from './dynamic_change_detector';
export {ChangeDetectorRef} from './change_detector_ref';
export {Pipes} from './pipes/pipes';
export {IterableDiffers, IterableDiffer, IterableDifferFactory} from './differs/iterable_differs';
export {KeyValueDiffers, KeyValueDiffer, KeyValueDifferFactory} from './differs/keyvalue_differs';
export {WrappedValue, Pipe, PipeFactory, BasePipe} from './pipes/pipe';
export {NullPipe, NullPipeFactory} from './pipes/null_pipe';
@ -59,14 +63,14 @@ export {NullPipe, NullPipeFactory} from './pipes/null_pipe';
/**
* Structural diffing for `Object`s and `Map`s.
*/
export const keyValDiff: List<PipeFactory> =
CONST_EXPR([CONST_EXPR(new KeyValueChangesFactory()), CONST_EXPR(new NullPipeFactory())]);
export const keyValDiff: KeyValueDifferFactory[] =
CONST_EXPR([CONST_EXPR(new DefaultKeyValueDifferFactory())]);
/**
* Structural diffing for `Iterable` types such as `Array`s.
*/
export const iterableDiff: List<PipeFactory> =
CONST_EXPR([CONST_EXPR(new IterableChangesFactory()), CONST_EXPR(new NullPipeFactory())]);
export const iterableDiff: IterableDifferFactory[] =
CONST_EXPR([CONST_EXPR(new DefaultIterableDifferFactory())]);
/**
* Async binding to such types as Observable.
@ -127,8 +131,6 @@ export const date: List<PipeFactory> =
export const defaultPipes: Pipes = CONST_EXPR(new Pipes({
"iterableDiff": iterableDiff,
"keyValDiff": keyValDiff,
"async": async,
"uppercase": uppercase,
"lowercase": lowercase,
@ -140,6 +142,10 @@ export const defaultPipes: Pipes = CONST_EXPR(new Pipes({
"date": date
}));
export const defaultIterableDiffers = CONST_EXPR(new IterableDiffers(iterableDiff));
export const defaultKeyValueDiffers = CONST_EXPR(new KeyValueDiffers(keyValDiff));
/**
* Map from {@link ChangeDetectorDefinition#id} to a factory method which takes a
* {@link Pipes} and a {@link ChangeDetectorDefinition} and generates a

30
modules/angular2/src/change_detection/pipes/iterable_changes.ts → modules/angular2/src/change_detection/differs/default_iterable_differ.ts
View File

@ -1,4 +1,4 @@
import {CONST} from 'angular2/src/facade/lang';
import {CONST, BaseException} from 'angular2/src/facade/lang';
import {
isListLikeIterable,
iterateListLike,
@ -15,17 +15,16 @@ import {
isArray
} from 'angular2/src/facade/lang';
import {WrappedValue, Pipe, BasePipe, PipeFactory} from './pipe';
import {ChangeDetectorRef} from '../change_detector_ref';
import {IterableDiffer, IterableDifferFactory} from '../differs/iterable_differs';
@CONST()
export class IterableChangesFactory implements PipeFactory {
supports(obj: any): boolean { return IterableChanges.supportsObj(obj); }
create(cdRef: ChangeDetectorRef): Pipe { return new IterableChanges(); }
export class DefaultIterableDifferFactory implements IterableDifferFactory {
supports(obj: Object): boolean { return isListLikeIterable(obj); }
create(cdRef: ChangeDetectorRef): any { return new DefaultIterableDiffer(); }
}
export class IterableChanges extends BasePipe {
export class DefaultIterableDiffer implements IterableDiffer {
private _collection = null;
private _length: int = null;
// Keeps track of the used records at any point in time (during & across `_check()` calls)
@ -42,12 +41,6 @@ export class IterableChanges extends BasePipe {
private _removalsHead: CollectionChangeRecord = null;
private _removalsTail: CollectionChangeRecord = null;
constructor() { super(); }
static supportsObj(obj: Object): boolean { return isListLikeIterable(obj); }
supports(obj: Object): boolean { return IterableChanges.supportsObj(obj); }
get collection() { return this._collection; }
get length(): int { return this._length; }
@ -87,14 +80,21 @@ export class IterableChanges extends BasePipe {
}
}
transform(collection: any, args: List<any> = null): any {
diff(collection: any): DefaultIterableDiffer {
if (isBlank(collection)) collection = [];
if (!isListLikeIterable(collection)) {
throw new BaseException(`Error trying to diff '${collection}'`);
}
if (this.check(collection)) {
return WrappedValue.wrap(this);
return this;
} else {
return null;
}
}
onDestroy() {}
// todo(vicb): optim for UnmodifiableListView (frozen arrays)
check(collection: any): boolean {
this._reset();

46
modules/angular2/src/change_detection/pipes/keyvalue_changes.ts → modules/angular2/src/change_detection/differs/default_keyvalue_differ.ts
View File

@ -1,16 +1,23 @@
import {ListWrapper, MapWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
import {stringify, looseIdentical, isJsObject, CONST} from 'angular2/src/facade/lang';
import {
stringify,
looseIdentical,
isJsObject,
CONST,
isBlank,
BaseException
} from 'angular2/src/facade/lang';
import {ChangeDetectorRef} from '../change_detector_ref';
import {WrappedValue, BasePipe, Pipe, PipeFactory} from './pipe';
import {KeyValueDiffer, KeyValueDifferFactory} from '../differs/keyvalue_differs';
@CONST()
export class KeyValueChangesFactory implements PipeFactory {
supports(obj: any): boolean { return KeyValueChanges.supportsObj(obj); }
export class DefaultKeyValueDifferFactory implements KeyValueDifferFactory {
supports(obj: any): boolean { return obj instanceof Map || isJsObject(obj); }
create(cdRef: ChangeDetectorRef): Pipe { return new KeyValueChanges(); }
create(cdRef: ChangeDetectorRef): KeyValueDiffer { return new DefaultKeyValueDiffer(); }
}
export class KeyValueChanges extends BasePipe {
export class DefaultKeyValueDiffer implements KeyValueDiffer {
private _records: Map<any, any> = new Map();
private _mapHead: KVChangeRecord = null;
private _previousMapHead: KVChangeRecord = null;
@ -21,18 +28,6 @@ export class KeyValueChanges extends BasePipe {
private _removalsHead: KVChangeRecord = null;
private _removalsTail: KVChangeRecord = null;
static supportsObj(obj: any): boolean { return obj instanceof Map || isJsObject(obj); }
supports(obj: any): boolean { return KeyValueChanges.supportsObj(obj); }
transform(map: Map<any, any>, args: List<any> = null): any {
if (this.check(map)) {
return WrappedValue.wrap(this);
} else {
return null;
}
}
get isDirty(): boolean {
return this._additionsHead !== null || this._changesHead !== null ||
this._removalsHead !== null;
@ -73,6 +68,21 @@ export class KeyValueChanges extends BasePipe {
}
}
diff(map: Map<any, any>): any {
if (isBlank(map)) map = MapWrapper.createFromPairs([]);
if (!(map instanceof Map || isJsObject(map))) {
throw new BaseException(`Error trying to diff '${map}'`);
}
if (this.check(map)) {
return this;
} else {
return null;
}
}
onDestroy() {}
check(map: Map<any, any>): boolean {
this._reset();
var records = this._records;

80
modules/angular2/src/change_detection/differs/iterable_differs.ts Normal file
View File

@ -0,0 +1,80 @@
import {isBlank, isPresent, BaseException, CONST} from 'angular2/src/facade/lang';
import {ListWrapper} from 'angular2/src/facade/collection';
import {ChangeDetectorRef} from '../change_detector_ref';
import {Binding, SkipSelfMetadata, OptionalMetadata, Injectable} from 'angular2/di';
export interface IterableDiffer {
diff(object: Object): any;
onDestroy();
}
/**
* Provides a factory for {@link IterableDiffer}.
*/
export interface IterableDifferFactory {
supports(objects: Object): boolean;
create(cdRef: ChangeDetectorRef): IterableDiffer;
}
/**
* A repository of different iterable diffing strategies used by NgFor, NgClass, and others.
*/
@Injectable()
@CONST()
export class IterableDiffers {
constructor(public factories: IterableDifferFactory[]) {}
static create(factories: IterableDifferFactory[], parent?: IterableDiffers): IterableDiffers {
if (isPresent(parent)) {
var copied = ListWrapper.clone(parent.factories);
factories = factories.concat(copied);
return new IterableDiffers(factories);
} else {
return new IterableDiffers(factories);
}
}
/**
* Takes an array of {@link IterableDifferFactory} and returns a binding used to extend the
* inherited {@link IterableDiffers} instance with the provided factories and return a new
* {@link IterableDiffers} instance.
*
* The following example shows how to extend an existing list of factories,
* which will only be applied to the injector for this component and its children.
* This step is all that's required to make a new {@link IterableDiffer} available.
*
* # Example
*
* ```
* @Component({
* viewBindings: [
* IterableDiffers.extend([new ImmutableListDiffer()])
* ]
* })
* ```
*/
static extend(factories: IterableDifferFactory[]): Binding {
return new Binding(IterableDiffers, {
toFactory: (parent: IterableDiffers) => {
if (isBlank(parent)) {
// Typically would occur when calling IterableDiffers.extend inside of dependencies passed
// to
// bootstrap(), which would override default pipes instead of extending them.
throw new BaseException('Cannot extend IterableDiffers without a parent injector');
}
return IterableDiffers.create(factories, parent);
},
// Dependency technically isn't optional, but we can provide a better error message this way.
deps: [[IterableDiffers, new SkipSelfMetadata(), new OptionalMetadata()]]
});
}
find(iterable: Object): IterableDifferFactory {
var factory = ListWrapper.find(this.factories, f => f.supports(iterable));
if (isPresent(factory)) {
return factory;
} else {
throw new BaseException(`Cannot find a differ supporting object '${iterable}'`);
}
}
}

80
modules/angular2/src/change_detection/differs/keyvalue_differs.ts Normal file
View File

@ -0,0 +1,80 @@
import {isBlank, isPresent, BaseException, CONST} from 'angular2/src/facade/lang';
import {ListWrapper} from 'angular2/src/facade/collection';
import {ChangeDetectorRef} from '../change_detector_ref';
import {Binding, SkipSelfMetadata, OptionalMetadata, Injectable} from 'angular2/di';
export interface KeyValueDiffer {
diff(object: Object);
onDestroy();
}
/**
* Provides a factory for {@link KeyValueDiffer}.
*/
export interface KeyValueDifferFactory {
supports(objects: Object): boolean;
create(cdRef: ChangeDetectorRef): KeyValueDiffer;
}
/**
* A repository of different Map diffing strategies used by NgClass, NgStyle, and others.
*/
@Injectable()
@CONST()
export class KeyValueDiffers {
constructor(public factories: KeyValueDifferFactory[]) {}
static create(factories: KeyValueDifferFactory[], parent?: KeyValueDiffers): KeyValueDiffers {
if (isPresent(parent)) {
var copied = ListWrapper.clone(parent.factories);
factories = factories.concat(copied);
return new KeyValueDiffers(factories);
} else {
return new KeyValueDiffers(factories);
}
}
/**
* Takes an array of {@link KeyValueDifferFactory} and returns a binding used to extend the
* inherited {@link KeyValueDiffers} instance with the provided factories and return a new
* {@link KeyValueDiffers} instance.
*
* The following example shows how to extend an existing list of factories,
* which will only be applied to the injector for this component and its children.
* This step is all that's required to make a new {@link KeyValueDiffer} available.
*
* # Example
*
* ```
* @Component({
* viewBindings: [
* KeyValueDiffers.extend([new ImmutableMapDiffer()])
* ]
* })
* ```
*/
static extend(factories: KeyValueDifferFactory[]): Binding {
return new Binding(KeyValueDiffers, {
toFactory: (parent: KeyValueDiffers) => {
if (isBlank(parent)) {
// Typically would occur when calling KeyValueDiffers.extend inside of dependencies passed
// to
// bootstrap(), which would override default pipes instead of extending them.
throw new BaseException('Cannot extend KeyValueDiffers without a parent injector');
}
return KeyValueDiffers.create(factories, parent);
},
// Dependency technically isn't optional, but we can provide a better error message this way.
deps: [[KeyValueDiffers, new SkipSelfMetadata(), new OptionalMetadata()]]
});
}
find(kv: Object): KeyValueDifferFactory {
var factory = ListWrapper.find(this.factories, f => f.supports(kv));
if (isPresent(factory)) {
return factory;
} else {
throw new BaseException(`Cannot find a differ supporting object '${kv}'`);
}
}
}

8
modules/angular2/src/core/application_common.ts
View File

@ -22,7 +22,11 @@ import {
JitChangeDetection,
PreGeneratedChangeDetection,
Pipes,
defaultPipes
defaultPipes,
IterableDiffers,
defaultIterableDiffers,
KeyValueDiffers,
defaultKeyValueDiffers
} from 'angular2/src/change_detection/change_detection';
import {ExceptionHandler} from './exception_handler';
import {ViewLoader} from 'angular2/src/render/dom/compiler/view_loader';
@ -134,6 +138,8 @@ function _injectorBindings(appComponentType): List<Type | Binding | List<any>> {
CompilerCache,
ViewResolver,
bind(Pipes).toValue(defaultPipes),
bind(IterableDiffers).toValue(defaultIterableDiffers),
bind(KeyValueDiffers).toValue(defaultKeyValueDiffers),
bind(ChangeDetection).toClass(bestChangeDetection),
ViewLoader,
DirectiveResolver,

56
modules/angular2/src/directives/class.ts
View File

@ -1,11 +1,13 @@
import {isPresent, isString, StringWrapper, isBlank} from 'angular2/src/facade/lang';
import {Directive, LifecycleEvent} from 'angular2/annotations';
import {ElementRef} from 'angular2/core';
import {Pipes} from 'angular2/src/change_detection/pipes/pipes';
import {Pipe} from 'angular2/src/change_detection/pipes/pipe';
import {Renderer} from 'angular2/src/render/api';
import {KeyValueChanges} from 'angular2/src/change_detection/pipes/keyvalue_changes';
import {IterableChanges} from 'angular2/src/change_detection/pipes/iterable_changes';
import {isPresent, isString, StringWrapper} from 'angular2/src/facade/lang';
import {
KeyValueDiffer,
IterableDiffer,
IterableDiffers,
KeyValueDiffers
} from 'angular2/change_detection';
import {ListWrapper, StringMapWrapper, isListLikeIterable} from 'angular2/src/facade/collection';
/**
@ -34,10 +36,12 @@ import {ListWrapper, StringMapWrapper, isListLikeIterable} from 'angular2/src/fa
properties: ['rawClass: class']
})
export class CSSClass {
_pipe: Pipe;
private _differ: any;
private _mode: string;
_rawClass;
constructor(private _pipes: Pipes, private _ngEl: ElementRef, private _renderer: Renderer) {}
constructor(private _iterableDiffers: IterableDiffers, private _keyValueDiffers: KeyValueDiffers,
private _ngEl: ElementRef, private _renderer: Renderer) {}
set rawClass(v) {
this._cleanupClasses(this._rawClass);
@ -47,16 +51,26 @@ export class CSSClass {
}
this._rawClass = v;
this._pipe = this._pipes.get(isListLikeIterable(v) ? 'iterableDiff' : 'keyValDiff', v);
if (isPresent(v)) {
if (isListLikeIterable(v)) {
this._differ = this._iterableDiffers.find(v).create(null);
this._mode = 'iterable';
} else {
this._differ = this._keyValueDiffers.find(v).create(null);
this._mode = 'keyValue';
}
}
}
onCheck(): void {
var diff = this._pipe.transform(this._rawClass, null);
if (isPresent(diff) && isPresent(diff.wrapped)) {
if (diff.wrapped instanceof IterableChanges) {
this._applyArrayChanges(diff.wrapped);
} else {
this._applyObjectChanges(diff.wrapped);
if (isPresent(this._differ)) {
var changes = this._differ.diff(this._rawClass);
if (isPresent(changes)) {
if (this._mode == 'iterable') {
this._applyIterableChanges(changes);
} else {
this._applyKeyValueChanges(changes);
}
}
}
}
@ -75,19 +89,19 @@ export class CSSClass {
}
}
private _applyObjectChanges(diff: KeyValueChanges): void {
diff.forEachAddedItem((record) => { this._toggleClass(record.key, record.currentValue); });
diff.forEachChangedItem((record) => { this._toggleClass(record.key, record.currentValue); });
diff.forEachRemovedItem((record) => {
private _applyKeyValueChanges(changes: any): void {
changes.forEachAddedItem((record) => { this._toggleClass(record.key, record.currentValue); });
changes.forEachChangedItem((record) => { this._toggleClass(record.key, record.currentValue); });
changes.forEachRemovedItem((record) => {
if (record.previousValue) {
this._toggleClass(record.key, false);
}
});
}
private _applyArrayChanges(diff: IterableChanges): void {
diff.forEachAddedItem((record) => { this._toggleClass(record.item, true); });
diff.forEachRemovedItem((record) => { this._toggleClass(record.item, false); });
private _applyIterableChanges(changes: any): void {
changes.forEachAddedItem((record) => { this._toggleClass(record.item, true); });
changes.forEachRemovedItem((record) => { this._toggleClass(record.item, false); });
}
private _toggleClass(className: string, enabled): void {

21
modules/angular2/src/directives/ng_for.ts
View File

@ -1,6 +1,6 @@
import {Directive, LifecycleEvent} from 'angular2/annotations';
import {ViewContainerRef, ViewRef, TemplateRef} from 'angular2/core';
import {ChangeDetectorRef, Pipe, Pipes} from 'angular2/change_detection';
import {ChangeDetectorRef, IterableDiffer, IterableDiffers} from 'angular2/change_detection';
import {isPresent, isBlank} from 'angular2/src/facade/lang';
/**
@ -37,27 +37,26 @@ import {isPresent, isBlank} from 'angular2/src/facade/lang';
{selector: '[ng-for][ng-for-of]', properties: ['ngForOf'], lifecycle: [LifecycleEvent.onCheck]})
export class NgFor {
_ngForOf: any;
_pipe: Pipe;
private _differ: IterableDiffer;
constructor(private viewContainer: ViewContainerRef, private templateRef: TemplateRef,
private pipes: Pipes, private cdr: ChangeDetectorRef) {}
private iterableDiffers: IterableDiffers, private cdr: ChangeDetectorRef) {}
set ngForOf(value: any) {
this._ngForOf = value;
this._pipe = this.pipes.get("iterableDiff", value, this.cdr, this._pipe);
if (isBlank(this._differ) && isPresent(value)) {
this._differ = this.iterableDiffers.find(value).create(this.cdr);
}
}
onCheck() {
var diff = this._pipe.transform(this._ngForOf, null);
if (isPresent(diff)) this._applyChanges(diff.wrapped);
if (isPresent(this._differ)) {
var changes = this._differ.diff(this._ngForOf);
if (isPresent(changes)) this._applyChanges(changes);
}
}
private _applyChanges(changes) {
if (isBlank(changes)) {
this.viewContainer.clear();
return;
}
// TODO(rado): check if change detection can produce a change record that is
// easier to consume than current.
var recordViewTuples = [];

37
modules/angular2/src/directives/ng_style.ts
View File

@ -1,9 +1,7 @@
import {Directive, LifecycleEvent} from 'angular2/annotations';
import {ElementRef} from 'angular2/core';
import {Pipe} from 'angular2/src/change_detection/pipes/pipe';
import {Pipes} from 'angular2/src/change_detection/pipes/pipes';
import {KeyValueChanges} from 'angular2/src/change_detection/pipes/keyvalue_changes';
import {isPresent, print} from 'angular2/src/facade/lang';
import {KeyValueDiffer, KeyValueDiffers} from 'angular2/change_detection';
import {isPresent, isBlank, print} from 'angular2/src/facade/lang';
import {Renderer} from 'angular2/src/render/api';
/**
@ -33,27 +31,32 @@ import {Renderer} from 'angular2/src/render/api';
properties: ['rawStyle: ng-style']
})
export class NgStyle {
_pipe: Pipe;
_rawStyle;
_differ: KeyValueDiffer;
constructor(private _pipes: Pipes, private _ngEl: ElementRef, private _renderer: Renderer) {}
constructor(private _differs: KeyValueDiffers, private _ngEl: ElementRef,
private _renderer: Renderer) {}
set rawStyle(v) {
this._rawStyle = v;
this._pipe = this._pipes.get('keyValDiff', this._rawStyle);
}
onCheck() {
var diff = this._pipe.transform(this._rawStyle, null);
if (isPresent(diff) && isPresent(diff.wrapped)) {
this._applyChanges(diff.wrapped);
if (isBlank(this._differ) && isPresent(v)) {
this._differ = this._differs.find(this._rawStyle).create(null);
}
}
private _applyChanges(diff: KeyValueChanges): void {
diff.forEachAddedItem((record) => { this._setStyle(record.key, record.currentValue); });
diff.forEachChangedItem((record) => { this._setStyle(record.key, record.currentValue); });
diff.forEachRemovedItem((record) => { this._setStyle(record.key, null); });
onCheck() {
if (isPresent(this._differ)) {
var changes = this._differ.diff(this._rawStyle);
if (isPresent(changes)) {
this._applyChanges(changes);
}
}
}
private _applyChanges(changes: any): void {
changes.forEachAddedItem((record) => { this._setStyle(record.key, record.currentValue); });
changes.forEachChangedItem((record) => { this._setStyle(record.key, record.currentValue); });
changes.forEachRemovedItem((record) => { this._setStyle(record.key, null); });
}
private _setStyle(name: string, val: string): void {

25
modules/angular2/src/directives/observable_list_diff.dart
View File

@ -2,10 +2,10 @@ library angular2.directives.observable_list_iterable_diff;
import 'package:observe/observe.dart' show ObservableList;
import 'package:angular2/change_detection.dart';
import 'package:angular2/src/change_detection/pipes/iterable_changes.dart';
import 'package:angular2/src/change_detection/differs/default_iterable_differ.dart';
import 'dart:async';
class ObservableListDiff extends IterableChanges {
class ObservableListDiff extends DefaultIterableDiffer {
ChangeDetectorRef _ref;
ObservableListDiff(this._ref);
@ -13,11 +13,6 @@ class ObservableListDiff extends IterableChanges {
ObservableList _collection;
StreamSubscription _subscription;
bool supports(obj) {
if (obj is ObservableList) return true;
throw "Cannot change the type of a collection";
}
onDestroy() {
if (this._subscription != null) {
this._subscription.cancel();
@ -26,10 +21,14 @@ class ObservableListDiff extends IterableChanges {
}
}
dynamic transform(ObservableList collection, [List args]) {
dynamic diff(ObservableList collection) {
if (collection is! ObservableList) {
throw "Cannot change the type of a collection";
}
// A new collection instance is passed in.
// - We need to set up a listener.
// - We need to transform collection.
// - We need to diff collection.
if (!identical(_collection, collection)) {
_collection = collection;
@ -39,14 +38,14 @@ class ObservableListDiff extends IterableChanges {
_ref.requestCheck();
});
_updated = false;
return super.transform(collection, args);
return super.diff(collection);
// An update has been registered since the last change detection check.
// - We reset the flag.
// - We diff the collection.
} else if (_updated) {
_updated = false;
return super.transform(collection, args);
return super.diff(collection);
// No updates has been registered.
// Returning this tells change detection that object has not change,
@ -57,10 +56,10 @@ class ObservableListDiff extends IterableChanges {
}
}
class ObservableListDiffFactory implements PipeFactory {
class ObservableListDiffFactory implements IterableDifferFactory {
const ObservableListDiffFactory();
bool supports(obj) => obj is ObservableList;
Pipe create(ChangeDetectorRef cdRef) {
IterableDiffer create(ChangeDetectorRef cdRef) {
return new ObservableListDiff(cdRef);
}
}

5
modules/angular2/src/test_lib/spies.dart
View File

@ -33,3 +33,8 @@ class SpyDependencyProvider extends SpyObject implements DependencyProvider {
class SpyChangeDetectorRef extends SpyObject implements ChangeDetectorRef {
noSuchMethod(m) => super.noSuchMethod(m);
}
@proxy
class SpyIterableDifferFactory extends SpyObject implements IterableDifferFactory {
noSuchMethod(m) => super.noSuchMethod(m);
}

2
modules/angular2/src/test_lib/spies.ts
View File

@ -24,3 +24,5 @@ export class SpyPipe extends SpyObject {
export class SpyPipeFactory extends SpyObject {}
export class SpyDependencyProvider extends SpyObject {}
export class SpyIterableDifferFactory extends SpyObject {}

10
modules/angular2/src/test_lib/test_injector.ts
View File

@ -8,7 +8,11 @@ import {
ChangeDetection,
DynamicChangeDetection,
Pipes,
defaultPipes
defaultPipes,
IterableDiffers,
defaultIterableDiffers,
KeyValueDiffers,
defaultKeyValueDiffers
} from 'angular2/src/change_detection/change_detection';
import {ExceptionHandler} from 'angular2/src/core/exception_handler';
import {ViewLoader} from 'angular2/src/render/dom/compiler/view_loader';
@ -119,8 +123,10 @@ function _getAppBindings() {
CompilerCache,
bind(ViewResolver).toClass(MockViewResolver),
bind(Pipes).toValue(defaultPipes),
Log,
bind(IterableDiffers).toValue(defaultIterableDiffers),
bind(KeyValueDiffers).toValue(defaultKeyValueDiffers),
bind(ChangeDetection).toClass(DynamicChangeDetection),
Log,
ViewLoader,
DynamicComponentLoader,
DirectiveResolver,

167
modules/angular2/test/change_detection/pipes/iterable_changes_spec.ts → modules/angular2/test/change_detection/differs/default_iterable_differ_spec.ts
View File

@ -1,5 +1,8 @@
import {describe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
import {IterableChanges} from 'angular2/src/change_detection/pipes/iterable_changes';
import {ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
import {
DefaultIterableDiffer,
DefaultIterableDifferFactory
} from 'angular2/src/change_detection/differs/default_iterable_differ';
import {NumberWrapper} from 'angular2/src/facade/lang';
import {ListWrapper, MapWrapper} from 'angular2/src/facade/collection';
@ -9,36 +12,35 @@ import {iterableChangesAsString} from '../util';
// todo(vicb): UnmodifiableListView / frozen object when implemented
export function main() {
describe('collection_changes', function() {
describe('CollectionChanges', function() {
var changes;
describe('iterable differ', function() {
describe('DefaultIterableDiffer', function() {
var differ;
beforeEach(() => { changes = new IterableChanges(); });
afterEach(() => { changes = null; });
beforeEach(() => { differ = new DefaultIterableDiffer(); });
it('should support list and iterables', () => {
expect(IterableChanges.supportsObj([])).toBeTruthy();
expect(IterableChanges.supportsObj(new TestIterable())).toBeTruthy();
expect(IterableChanges.supportsObj(new Map())).toBeFalsy();
expect(IterableChanges.supportsObj(null)).toBeFalsy();
var f = new DefaultIterableDifferFactory();
expect(f.supports([])).toBeTruthy();
expect(f.supports(new TestIterable())).toBeTruthy();
expect(f.supports(new Map())).toBeFalsy();
expect(f.supports(null)).toBeFalsy();
});
it('should support iterables', () => {
let l = new TestIterable();
changes.check(l);
expect(changes.toString()).toEqual(iterableChangesAsString({collection: []}));
differ.check(l);
expect(differ.toString()).toEqual(iterableChangesAsString({collection: []}));
l.list = [1];
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(
iterableChangesAsString({collection: ['1[null->0]'], additions: ['1[null->0]']}));
l.list = [2, 1];
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['2[null->0]', '1[0->1]'],
previous: ['1[0->1]'],
@ -49,29 +51,29 @@ export function main() {
it('should detect additions', () => {
let l = [];
changes.check(l);
expect(changes.toString()).toEqual(iterableChangesAsString({collection: []}));
differ.check(l);
expect(differ.toString()).toEqual(iterableChangesAsString({collection: []}));
l.push('a');
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(
iterableChangesAsString({collection: ['a[null->0]'], additions: ['a[null->0]']}));
l.push('b');
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString(
{collection: ['a', 'b[null->1]'], previous: ['a'], additions: ['b[null->1]']}));
});
it('should support changing the reference', () => {
let l = [0];
changes.check(l);
differ.check(l);
l = [1, 0];
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['1[null->0]', '0[0->1]'],
previous: ['0[0->1]'],
@ -80,8 +82,8 @@ export function main() {
}));
l = [2, 1, 0];
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['2[null->0]', '1[0->1]', '0[1->2]'],
previous: ['1[0->1]', '0[1->2]'],
@ -92,13 +94,13 @@ export function main() {
it('should handle swapping element', () => {
let l = [1, 2];
changes.check(l);
differ.check(l);
ListWrapper.clear(l);
l.push(2);
l.push(1);
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['2[1->0]', '1[0->1]'],
previous: ['1[0->1]', '2[1->0]'],
@ -108,12 +110,12 @@ export function main() {
it('should handle swapping element', () => {
let l = ['a', 'b', 'c'];
changes.check(l);
differ.check(l);
ListWrapper.removeAt(l, 1);
ListWrapper.insert(l, 0, 'b');
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['b[1->0]', 'a[0->1]', 'c'],
previous: ['a[0->1]', 'b[1->0]', 'c'],
@ -122,8 +124,8 @@ export function main() {
ListWrapper.removeAt(l, 1);
l.push('a');
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['b', 'c[2->1]', 'a[1->2]'],
previous: ['b', 'a[1->2]', 'c[2->1]'],
@ -133,24 +135,24 @@ export function main() {
it('should detect changes in list', () => {
let l = [];
changes.check(l);
differ.check(l);
l.push('a');
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(
iterableChangesAsString({collection: ['a[null->0]'], additions: ['a[null->0]']}));
l.push('b');
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString(
{collection: ['a', 'b[null->1]'], previous: ['a'], additions: ['b[null->1]']}));
l.push('c');
l.push('d');
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['a', 'b', 'c[null->2]', 'd[null->3]'],
previous: ['a', 'b'],
@ -158,8 +160,8 @@ export function main() {
}));
ListWrapper.removeAt(l, 2);
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['a', 'b', 'd[3->2]'],
previous: ['a', 'b', 'c[2->null]', 'd[3->2]'],
@ -172,8 +174,8 @@ export function main() {
l.push('c');
l.push('b');
l.push('a');
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['d[2->0]', 'c[null->1]', 'b[1->2]', 'a[0->3]'],
previous: ['a[0->3]', 'b[1->2]', 'd[2->0]'],
@ -184,32 +186,32 @@ export function main() {
it('should test string by value rather than by reference (Dart)', () => {
let l = ['a', 'boo'];
changes.check(l);
differ.check(l);
var b = 'b';
var oo = 'oo';
ListWrapper.set(l, 1, b + oo);
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({collection: ['a', 'boo'], previous: ['a', 'boo']}));
});
it('should ignore [NaN] != [NaN] (JS)', () => {
let l = [NumberWrapper.NaN];
changes.check(l);
changes.check(l);
expect(changes.toString())
differ.check(l);
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString(
{collection: [NumberWrapper.NaN], previous: [NumberWrapper.NaN]}));
});
it('should detect [NaN] moves', () => {
let l = [NumberWrapper.NaN, NumberWrapper.NaN];
changes.check(l);
differ.check(l);
ListWrapper.insert<any>(l, 0, 'foo');
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['foo[null->0]', 'NaN[0->1]', 'NaN[1->2]'],
previous: ['NaN[0->1]', 'NaN[1->2]'],
@ -220,11 +222,11 @@ export function main() {
it('should remove and add same item', () => {
let l = ['a', 'b', 'c'];
changes.check(l);
differ.check(l);
ListWrapper.removeAt(l, 1);
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['a', 'c[2->1]'],
previous: ['a', 'b[1->null]', 'c[2->1]'],
@ -233,8 +235,8 @@ export function main() {
}));
ListWrapper.insert(l, 1, 'b');
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['a', 'b[null->1]', 'c[1->2]'],
previous: ['a', 'c[1->2]'],
@ -245,11 +247,11 @@ export function main() {
it('should support duplicates', () => {
let l = ['a', 'a', 'a', 'b', 'b'];
changes.check(l);
differ.check(l);
ListWrapper.removeAt(l, 0);
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['a', 'a', 'b[3->2]', 'b[4->3]'],
previous: ['a', 'a', 'a[2->null]', 'b[3->2]', 'b[4->3]'],
@ -260,11 +262,11 @@ export function main() {
it('should support insertions/moves', () => {
let l = ['a', 'a', 'b', 'b'];
changes.check(l);
differ.check(l);
ListWrapper.insert(l, 0, 'b');
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['b[2->0]', 'a[0->1]', 'a[1->2]', 'b', 'b[null->4]'],
previous: ['a[0->1]', 'a[1->2]', 'b[2->0]', 'b'],
@ -275,20 +277,43 @@ export function main() {
it('should not report unnecessary moves', () => {
let l = ['a', 'b', 'c'];
changes.check(l);
differ.check(l);
ListWrapper.clear(l);
l.push('b');
l.push('a');
l.push('c');
changes.check(l);
expect(changes.toString())
differ.check(l);
expect(differ.toString())
.toEqual(iterableChangesAsString({
collection: ['b[1->0]', 'a[0->1]', 'c'],
previous: ['a[0->1]', 'b[1->0]', 'c'],
moves: ['b[1->0]', 'a[0->1]']
}));
});
describe('diff', () => {
it('should return self when there is a change',
() => { expect(differ.diff(['a', 'b'])).toBe(differ); });
it('should return null when there is no change', () => {
differ.diff(['a', 'b']);
expect(differ.diff(['a', 'b'])).toEqual(null);
});
it('should treat null as an empty list', () => {
differ.diff(['a', 'b']);
expect(differ.diff(null).toString())
.toEqual(iterableChangesAsString({
previous: ['a[0->null]', 'b[1->null]'],
removals: ['a[0->null]', 'b[1->null]']
}));
});
it('should throw when given an invalid collection', () => {
expect(() => differ.diff("invalid")).toThrowErrorWith("Error trying to diff 'invalid'");
});
});
});
});
}

128
modules/angular2/test/change_detection/pipes/keyvalue_changes_spec.ts → modules/angular2/test/change_detection/differs/default_keyvalue_differ_spec.ts
View File

@ -1,34 +1,37 @@
import {describe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
import {KeyValueChanges} from 'angular2/src/change_detection/pipes/keyvalue_changes';
import {ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
import {
DefaultKeyValueDiffer,
DefaultKeyValueDifferFactory
} from 'angular2/src/change_detection/differs/default_keyvalue_differ';
import {NumberWrapper, isJsObject} from 'angular2/src/facade/lang';
import {MapWrapper} from 'angular2/src/facade/collection';
import {kvChangesAsString} from '../util';
// todo(vicb): Update the code & tests for object equality
export function main() {
describe('keyvalue_changes', function() {
describe('KeyValueChanges', function() {
var changes;
describe('keyvalue differ', function() {
describe('DefaultKeyValueDiffer', function() {
var differ;
var m: Map<any, any>;
beforeEach(() => {
changes = new KeyValueChanges();
differ = new DefaultKeyValueDiffer();
m = new Map();
});
afterEach(() => { changes = null; });
afterEach(() => { differ = null; });
it('should detect additions', () => {
changes.check(m);
differ.check(m);
m.set('a', 1);
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString({map: ['a[null->1]'], additions: ['a[null->1]']}));
m.set('b', 2);
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString(
{map: ['a', 'b[null->2]'], previous: ['a'], additions: ['b[null->2]']}));
});
@ -36,12 +39,12 @@ export function main() {
it('should handle changing key/values correctly', () => {
m.set(1, 10);
m.set(2, 20);
changes.check(m);
differ.check(m);
m.set(2, 10);
m.set(1, 20);
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString({
map: ['1[10->20]', '2[20->10]'],
previous: ['1[10->20]', '2[20->10]'],
@ -53,12 +56,12 @@ export function main() {
var previous, current;
m.set(1, 10);
changes.check(m);
differ.check(m);
m.set(1, 20);
changes.check(m);
differ.check(m);
changes.forEachChangedItem((record) => {
differ.forEachChangedItem((record) => {
previous = record.previousValue;
current = record.currentValue;
});
@ -68,23 +71,23 @@ export function main() {
});
it('should do basic map watching', () => {
changes.check(m);
differ.check(m);
m.set('a', 'A');
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString({map: ['a[null->A]'], additions: ['a[null->A]']}));
m.set('b', 'B');
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString(
{map: ['a', 'b[null->B]'], previous: ['a'], additions: ['b[null->B]']}));
m.set('b', 'BB');
m.set('d', 'D');
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString({
map: ['a', 'b[B->BB]', 'd[null->D]'],
previous: ['a', 'b[B->BB]'],
@ -93,21 +96,21 @@ export function main() {
}));
MapWrapper.delete(m, 'b');
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString(
{map: ['a', 'd'], previous: ['a', 'b[BB->null]', 'd'], removals: ['b[BB->null]']}));
m.clear();
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString(
{previous: ['a[A->null]', 'd[D->null]'], removals: ['a[A->null]', 'd[D->null]']}));
});
it('should test string by value rather than by reference (DART)', () => {
m.set('foo', 'bar');
changes.check(m);
differ.check(m);
var f = 'f';
var oo = 'oo';
@ -115,48 +118,49 @@ export function main() {
var ar = 'ar';
m.set(f + oo, b + ar);
changes.check(m);
differ.check(m);
expect(changes.toString()).toEqual(kvChangesAsString({map: ['foo'], previous: ['foo']}));
expect(differ.toString()).toEqual(kvChangesAsString({map: ['foo'], previous: ['foo']}));
});
it('should not see a NaN value as a change (JS)', () => {
m.set('foo', NumberWrapper.NaN);
changes.check(m);
differ.check(m);
changes.check(m);
expect(changes.toString()).toEqual(kvChangesAsString({map: ['foo'], previous: ['foo']}));
differ.check(m);
expect(differ.toString()).toEqual(kvChangesAsString({map: ['foo'], previous: ['foo']}));
});
// JS specific tests (JS Objects)
if (isJsObject({})) {
describe('JsObject changes', () => {
it('should support JS Object', () => {
expect(KeyValueChanges.supportsObj({})).toBeTruthy();
expect(KeyValueChanges.supportsObj("not supported")).toBeFalsy();
expect(KeyValueChanges.supportsObj(0)).toBeFalsy();
expect(KeyValueChanges.supportsObj(null)).toBeFalsy();
var f = new DefaultKeyValueDifferFactory();
expect(f.supports({})).toBeTruthy();
expect(f.supports("not supported")).toBeFalsy();
expect(f.supports(0)).toBeFalsy();
expect(f.supports(null)).toBeFalsy();
});
it('should do basic object watching', () => {
let m = {};
changes.check(m);
differ.check(m);
m['a'] = 'A';
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString({map: ['a[null->A]'], additions: ['a[null->A]']}));
m['b'] = 'B';
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString(
{map: ['a', 'b[null->B]'], previous: ['a'], additions: ['b[null->B]']}));
m['b'] = 'BB';
m['d'] = 'D';
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString({
map: ['a', 'b[B->BB]', 'd[null->D]'],
previous: ['a', 'b[B->BB]'],
@ -167,8 +171,8 @@ export function main() {
m = {};
m['a'] = 'A';
m['d'] = 'D';
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString({
map: ['a', 'd'],
previous: ['a', 'b[BB->null]', 'd'],
@ -176,14 +180,38 @@ export function main() {
}));
m = {};
changes.check(m);
expect(changes.toString())
differ.check(m);
expect(differ.toString())
.toEqual(kvChangesAsString({
previous: ['a[A->null]', 'd[D->null]'],
removals: ['a[A->null]', 'd[D->null]']
}));
});
});
describe('diff', () => {
it('should return self when there is a change', () => {
m.set('a', 'A');
expect(differ.diff(m)).toBe(differ);
});
it('should return null when there is no change', () => {
m.set('a', 'A');
differ.diff(m);
expect(differ.diff(m)).toEqual(null);
});
it('should treat null as an empty list', () => {
m.set('a', 'A');
differ.diff(m);
expect(differ.diff(null).toString())
.toEqual(kvChangesAsString({previous: ['a[A->null]'], removals: ['a[A->null]']}));
});
it('should throw when given an invalid collection', () => {
expect(() => differ.diff("invalid")).toThrowErrorWith("Error trying to diff 'invalid'");
});
});
}
});
});

70
modules/angular2/test/change_detection/differs/iterable_differs_spec.ts Normal file
View File

@ -0,0 +1,70 @@
import {
ddescribe,
describe,
it,
iit,
xit,
expect,
beforeEach,
afterEach,
SpyIterableDifferFactory
} from 'angular2/test_lib';
import {IterableDiffers} from 'angular2/src/change_detection/differs/iterable_differs';
import {Injector, bind} from 'angular2/di';
export function main() {
describe('IterableDiffers', function() {
var factory1;
var factory2;
var factory3;
beforeEach(() => {
factory1 = new SpyIterableDifferFactory();
factory2 = new SpyIterableDifferFactory();
factory3 = new SpyIterableDifferFactory();
});
it('should throw when no suitable implementation found', () => {
var differs = new IterableDiffers([]);
expect(() => differs.find("some object"))
.toThrowErrorWith("Cannot find a differ supporting object 'some object'")
});
it('should return the first suitable implementation', () => {
factory1.spy("supports").andReturn(false);
factory2.spy("supports").andReturn(true);
factory3.spy("supports").andReturn(true);
var differs = IterableDiffers.create(<any>[factory1, factory2, factory3]);
expect(differs.find("some object")).toBe(factory2);
});
it('should copy over differs from the parent repo', () => {
factory1.spy("supports").andReturn(true);
factory2.spy("supports").andReturn(false);
var parent = IterableDiffers.create(<any>[factory1]);
var child = IterableDiffers.create(<any>[factory2], parent);
expect(child.factories).toEqual([factory2, factory1]);
});
describe(".extend()", () => {
it('should throw if calling extend when creating root injector', () => {
var injector = Injector.resolveAndCreate([IterableDiffers.extend([])]);
expect(() => injector.get(IterableDiffers))
.toThrowErrorWith("Cannot extend IterableDiffers without a parent injector");
});
it('should extend di-inherited diffesr', () => {
var parent = new IterableDiffers([factory1]);
var injector = Injector.resolveAndCreate([bind(IterableDiffers).toValue(parent)]);
var childInjector = injector.resolveAndCreateChild([IterableDiffers.extend([factory2])]);
expect(injector.get(IterableDiffers).factories).toEqual([factory1]);
expect(childInjector.get(IterableDiffers).factories).toEqual([factory2, factory1]);
});
});
});
}

12
modules/angular2/test/core/compiler/integration_dart_spec.dart
View File

@ -6,7 +6,7 @@ import 'package:angular2/di.dart';
import 'package:angular2/test_lib.dart';
import 'package:observe/observe.dart';
import 'package:angular2/src/directives/observable_list_diff.dart';
import 'package:angular2/src/change_detection/pipes/iterable_changes.dart';
import 'package:angular2/src/change_detection/differs/default_iterable_differ.dart';
class MockException implements Error {
var message;
@ -269,14 +269,12 @@ class OnChangeComponent implements OnChange {
changeDetection: ON_PUSH,
properties: const ['list'],
bindings: const [
const Binding(Pipes,
toValue: const Pipes(const {
"iterableDiff": const [
const Binding(IterableDiffers,
toValue: const IterableDiffers(const [
const ObservableListDiffFactory(),
const IterableChangesFactory(),
const NullPipeFactory()
const DefaultIterableDifferFactory()
]
}))
))
])
@View(
template: '<span *ng-for="#item of list">{{item}}</span><directive-logging-checks></directive-logging-checks>',

48
modules/angular2/test/directives/observable_list_diff_spec.dart
View File

@ -6,64 +6,64 @@ import 'package:angular2/src/directives/observable_list_diff.dart';
main() {
describe('ObservableListDiff', () {
var pipeFactory, changeDetectorRef;
var factory, changeDetectorRef;
beforeEach(() {
pipeFactory = const ObservableListDiffFactory();
factory = const ObservableListDiffFactory();
changeDetectorRef = new SpyChangeDetectorRef();
});
describe("supports", () {
it("should be true for ObservableList", () {
expect(pipeFactory.supports(new ObservableList())).toBe(true);
expect(factory.supports(new ObservableList())).toBe(true);
});
it("should be false otherwise", () {
expect(pipeFactory.supports([1, 2, 3])).toBe(false);
expect(factory.supports([1, 2, 3])).toBe(false);
});
});
it("should return the wrapped value to trigger change detection on first invocation of transform",
it("should return itself when called the first time",
() {
final pipe = pipeFactory.create(changeDetectorRef);
final d = factory.create(changeDetectorRef);
final c = new ObservableList.from([1, 2]);
expect(pipe.transform(c, []).wrapped).toBe(pipe);
expect(d.diff(c)).toBe(d);
});
it("should return itself when no changes between the calls", () {
final pipe = pipeFactory.create(changeDetectorRef);
final d = factory.create(changeDetectorRef);
final c = new ObservableList.from([1, 2]);
pipe.transform(c, []);
d.diff(c);
expect(pipe.transform(c, [])).toBe(pipe);
expect(d.diff(c)).toBe(d);
});
it("should return the wrapped value once a change has been trigger",
it("should return the wrapped value once a change has been triggered",
fakeAsync(() {
final pipe = pipeFactory.create(changeDetectorRef);
final d = factory.create(changeDetectorRef);
final c = new ObservableList.from([1, 2]);
pipe.transform(c, []);
d.diff(c);
c.add(3);
// same value, because we have not detected the change yet
expect(pipe.transform(c, [])).toBe(pipe);
expect(d.diff(c)).toBe(d);
// now we detect the change
flushMicrotasks();
expect(pipe.transform(c, []).wrapped).toBe(pipe);
expect(d.diff(c)).toBe(d);
}));
it("should request a change detection check upon receiving a change",
fakeAsync(() {
final pipe = pipeFactory.create(changeDetectorRef);
final d = factory.create(changeDetectorRef);
final c = new ObservableList.from([1, 2]);
pipe.transform(c, []);
d.diff(c);
c.add(3);
flushMicrotasks();
@ -72,28 +72,28 @@ main() {
}));
it("should return the wrapped value after changing a collection", () {
final pipe = pipeFactory.create(changeDetectorRef);
final d = factory.create(changeDetectorRef);
final c1 = new ObservableList.from([1, 2]);
final c2 = new ObservableList.from([3, 4]);
expect(pipe.transform(c1, []).wrapped).toBe(pipe);
expect(pipe.transform(c2, []).wrapped).toBe(pipe);
expect(d.diff(c1)).toBe(d);
expect(d.diff(c2)).toBe(d);
});
it("should not unbsubscribe from the stream of chagnes after changing a collection",
() {
final pipe = pipeFactory.create(changeDetectorRef);
final d = factory.create(changeDetectorRef);
final c1 = new ObservableList.from([1, 2]);
expect(pipe.transform(c1, []).wrapped).toBe(pipe);
expect(d.diff(c1)).toBe(d);
final c2 = new ObservableList.from([3, 4]);
expect(pipe.transform(c2, []).wrapped).toBe(pipe);
expect(d.diff(c2)).toBe(d);
// pushing into the first collection has no effect, and we do not see the change
c1.add(3);
expect(pipe.transform(c2, [])).toBe(pipe);
expect(d.diff(c2)).toBe(d);
});
});
}