refactor(pipes): removed BasePipeTrasnform

Closes #3608

modules/angular2/change_detection.ts

@@ -21,11 +21,11 @@ export {
 
   WrappedValue,
   PipeTransform,
+  PipeOnDestroy,
   IterableDiffers,
   IterableDiffer,
   IterableDifferFactory,
   KeyValueDiffers,
   KeyValueDiffer,
-  KeyValueDifferFactory,
+  KeyValueDifferFactory
-  BasePipeTransform
 } from 'angular2/src/change_detection/change_detection';

modules/angular2/src/change_detection/change_detection.ts

@@ -44,7 +44,7 @@ export {DynamicChangeDetector} from './dynamic_change_detector';
 export {ChangeDetectorRef} from './change_detector_ref';
 export {IterableDiffers, IterableDiffer, IterableDifferFactory} from './differs/iterable_differs';
 export {KeyValueDiffers, KeyValueDiffer, KeyValueDifferFactory} from './differs/keyvalue_differs';
-export {PipeTransform, PipeOnDestroy, BasePipeTransform} from './pipe_transform';
+export {PipeTransform, PipeOnDestroy} from './pipe_transform';
 export {WrappedValue} from './change_detection_util';
 
 /**

modules/angular2/src/change_detection/pipe_transform.ts

@@ -37,26 +37,3 @@ export interface PipeTransform { transform(value: any, args: List<any>): any; }
  * ```
  */
 export interface PipeOnDestroy { onDestroy(): void; }
-
-/**
- * Provides default implementation of the `onDestroy` method.
- *
- * #Example
- *
- * ```
- * class DoublePipe extends BasePipe {
- *  transform(value) {
- *    return `${value}${value}`;
- *  }
- * }
- * ```
- */
-@CONST()
-export class BasePipeTransform implements PipeTransform, PipeOnDestroy {
-  onDestroy(): void {}
-  transform(value: any, args: List<any>): any { return _abstract(); }
-}
-
-function _abstract() {
-  throw new BaseException('This method is abstract');
-}

modules/angular2/src/pipes/async_pipe.ts

@@ -2,7 +2,7 @@ import {isBlank, isPresent, isPromise, CONST, BaseException} from 'angular2/src/
 import {Observable, Promise, ObservableWrapper} from 'angular2/src/facade/async';
 import {Injectable} from 'angular2/di';
 
-import {PipeTransform, WrappedValue} from 'angular2/change_detection';
+import {PipeTransform, PipeOnDestroy, WrappedValue} from 'angular2/change_detection';
 import {InvalidPipeArgumentException} from './invalid_pipe_argument_exception';
 import {ChangeDetectorRef} from 'angular2/change_detection';
 
@@ -59,7 +59,7 @@ var _observableStrategy = new ObservableStrategy();
  */
 @Pipe({name: 'async'})
 @Injectable()
-export class AsyncPipe implements PipeTransform {
+export class AsyncPipe implements PipeTransform, PipeOnDestroy {
   _latestValue: Object = null;
   _latestReturnedValue: Object = null;
 

modules/angular2/src/pipes/date_pipe.ts

@@ -12,7 +12,7 @@ import {DateFormatter} from 'angular2/src/facade/intl';
 import {Injectable} from 'angular2/di';
 import {StringMapWrapper, ListWrapper} from 'angular2/src/facade/collection';
 
-import {PipeTransform, WrappedValue, BasePipeTransform} from 'angular2/change_detection';
+import {PipeTransform, WrappedValue} from 'angular2/change_detection';
 import {InvalidPipeArgumentException} from './invalid_pipe_argument_exception';
 
 import {Pipe} from 'angular2/src/core/annotations/decorators';
@@ -77,7 +77,7 @@ var defaultLocale: string = 'en-US';
 @CONST()
 @Pipe({name: 'date'})
 @Injectable()
-export class DatePipe extends BasePipeTransform {
+export class DatePipe implements PipeTransform {
   static _ALIASES = {
     'medium': 'yMMMdjms',
     'short': 'yMdjm',

modules/angular2/src/pipes/json_pipe.ts

@@ -1,7 +1,7 @@
 import {isBlank, isPresent, Json, CONST} from 'angular2/src/facade/lang';
 import {Injectable} from 'angular2/di';
 
-import {PipeTransform, WrappedValue, BasePipeTransform} from 'angular2/change_detection';
+import {PipeTransform, WrappedValue} from 'angular2/change_detection';
 
 import {Pipe} from 'angular2/src/core/annotations/decorators';
 
@@ -31,6 +31,6 @@ import {Pipe} from 'angular2/src/core/annotations/decorators';
 @CONST()
 @Pipe({name: 'json'})
 @Injectable()
-export class JsonPipe extends BasePipeTransform {
+export class JsonPipe implements PipeTransform {
   transform(value: any, args: List<any> = null): string { return Json.stringify(value); }
 }

modules/angular2/src/pipes/limit_to_pipe.ts

@@ -10,7 +10,7 @@ import {ListWrapper} from 'angular2/src/facade/collection';
 import {Math} from 'angular2/src/facade/math';
 import {Injectable} from 'angular2/di';
 
-import {PipeTransform, WrappedValue, BasePipeTransform} from 'angular2/change_detection';
+import {PipeTransform, WrappedValue} from 'angular2/change_detection';
 import {InvalidPipeArgumentException} from './invalid_pipe_argument_exception';
 
 import {Pipe} from 'angular2/src/core/annotations/decorators';
@@ -78,6 +78,4 @@ export class LimitToPipe implements PipeTransform {
     }
     return ListWrapper.slice(value, left, right);
   }
-
-  onDestroy(): void {}
 }

modules/angular2/src/pipes/lowercase_pipe.ts

@@ -1,7 +1,7 @@
 import {isString, StringWrapper, CONST, isBlank} from 'angular2/src/facade/lang';
 import {Injectable} from 'angular2/di';
 
-import {PipeTransform, WrappedValue, BasePipeTransform} from 'angular2/change_detection';
+import {PipeTransform, WrappedValue} from 'angular2/change_detection';
 import {InvalidPipeArgumentException} from './invalid_pipe_argument_exception';
 
 
@@ -30,7 +30,7 @@ import {Pipe} from 'angular2/src/core/annotations/decorators';
 @CONST()
 @Pipe({name: 'lowercase'})
 @Injectable()
-export class LowerCasePipe extends BasePipeTransform {
+export class LowerCasePipe implements PipeTransform {
   transform(value: string, args: List<any> = null): string {
     if (isBlank(value)) return value;
     if (!isString(value)) {

modules/angular2/src/pipes/number_pipe.ts

@@ -13,7 +13,7 @@ import {NumberFormatter, NumberFormatStyle} from 'angular2/src/facade/intl';
 import {Injectable} from 'angular2/di';
 import {ListWrapper} from 'angular2/src/facade/collection';
 
-import {PipeTransform, WrappedValue, BasePipeTransform} from 'angular2/change_detection';
+import {PipeTransform, WrappedValue} from 'angular2/change_detection';
 import {InvalidPipeArgumentException} from './invalid_pipe_argument_exception';
 
 import {Pipe} from 'angular2/src/core/annotations/decorators';
@@ -23,7 +23,7 @@ var _re = RegExpWrapper.create('^(\\d+)?\\.((\\d+)(\\-(\\d+))?)?$');
 
 @CONST()
 @Injectable()
-export class NumberPipe extends BasePipeTransform {
+export class NumberPipe {
   static _format(value: number, style: NumberFormatStyle, digits: string, currency: string = null,
                  currencyAsSymbol: boolean = false): string {
     if (isBlank(value)) return null;
@@ -84,7 +84,7 @@ export class NumberPipe extends BasePipeTransform {
 @CONST()
 @Pipe({name: 'number'})
 @Injectable()
-export class DecimalPipe extends NumberPipe {
+export class DecimalPipe extends NumberPipe implements PipeTransform {
   transform(value: any, args: any[]): string {
     var digits: string = ListWrapper.first(args);
     return NumberPipe._format(value, NumberFormatStyle.DECIMAL, digits);
@@ -103,7 +103,7 @@ export class DecimalPipe extends NumberPipe {
 @CONST()
 @Pipe({name: 'percent'})
 @Injectable()
-export class PercentPipe extends NumberPipe {
+export class PercentPipe extends NumberPipe implements PipeTransform {
   transform(value: any, args: any[]): string {
     var digits: string = ListWrapper.first(args);
     return NumberPipe._format(value, NumberFormatStyle.PERCENT, digits);
@@ -126,7 +126,7 @@ export class PercentPipe extends NumberPipe {
 @CONST()
 @Pipe({name: 'currency'})
 @Injectable()
-export class CurrencyPipe extends NumberPipe {
+export class CurrencyPipe extends NumberPipe implements PipeTransform {
   transform(value: any, args: any[]): string {
     var currencyCode: string = isPresent(args) && args.length > 0 ? args[0] : 'USD';
     var symbolDisplay: boolean = isPresent(args) && args.length > 1 ? args[1] : false;

modules/angular2/src/pipes/uppercase_pipe.ts

@@ -1,7 +1,7 @@
 import {isString, StringWrapper, CONST, isBlank} from 'angular2/src/facade/lang';
 import {Injectable} from 'angular2/di';
 
-import {PipeTransform, WrappedValue, BasePipeTransform} from 'angular2/change_detection';
+import {PipeTransform, WrappedValue} from 'angular2/change_detection';
 import {InvalidPipeArgumentException} from './invalid_pipe_argument_exception';
 
 import {Pipe} from 'angular2/src/core/annotations/decorators';
@@ -29,7 +29,7 @@ import {Pipe} from 'angular2/src/core/annotations/decorators';
 @CONST()
 @Pipe({name: 'uppercase'})
 @Injectable()
-export class UpperCasePipe extends BasePipeTransform {
+export class UpperCasePipe implements PipeTransform {
   transform(value: string, args: List<any> = null): string {
     if (isBlank(value)) return value;
     if (!isString(value)) {

modules/angular2/test/pipes/json_pipe_spec.ts

@@ -73,11 +73,5 @@ export function main() {
       });
 
     });
-
-    describe("onDestroy", () => {
-      it("should do nothing when no latest value",
-         () => { expect(() => pipe.onDestroy()).not.toThrow(); });
-    });
-
   });
 }