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Replace EventEmitter with EventEmitter2 in CircularList

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Daniel Imms
2019-04-02 11:30:47 -07:00
parent 5f014be057
commit f8fb4da9f4
6 changed files with 44 additions and 27 deletions
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src/common/CircularList.ts
+14 -8
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@@ -3,8 +3,8 @@
* @license MIT
*/
import { EventEmitter } from './EventEmitter';
import { ICircularList } from './Types';
import { EventEmitter2, IEvent } from './EventEmitter2';
export interface IInsertEvent {
index: number;
@@ -20,15 +20,21 @@ export interface IDeleteEvent {
* Represents a circular list; a list with a maximum size that wraps around when push is called,
* overriding values at the start of the list.
*/
export class CircularList<T> extends EventEmitter implements ICircularList<T> {
export class CircularList<T> implements ICircularList<T> {
protected _array: (T | undefined)[];
private _startIndex: number;
private _length: number;
public onDeleteEmitter = new EventEmitter2<IDeleteEvent>();
public get onDelete(): IEvent<IDeleteEvent> { return this.onDeleteEmitter.event; }
public onInsertEmitter = new EventEmitter2<IInsertEvent>();
public get onInsert(): IEvent<IInsertEvent> { return this.onInsertEmitter.event; }
public onTrimEmitter = new EventEmitter2<number>();
public get onTrim(): IEvent<number> { return this.onTrimEmitter.event; }
constructor(
private _maxLength: number
) {
super();
this._array = new Array<T>(this._maxLength);
this._startIndex = 0;
this._length = 0;
@@ -101,7 +107,7 @@ export class CircularList<T> extends EventEmitter implements ICircularList<T> {
this._array[this._getCyclicIndex(this._length)] = value;
if (this._length === this._maxLength) {
this._startIndex = ++this._startIndex % this._maxLength;
this.emitMayRemoveListeners('trim', 1);
this.onTrimEmitter.fire(1);
} else {
this._length++;
}
@@ -117,7 +123,7 @@ export class CircularList<T> extends EventEmitter implements ICircularList<T> {
throw new Error('Can only recycle when the buffer is full');
}
this._startIndex = ++this._startIndex % this._maxLength;
this.emitMayRemoveListeners('trim', 1);
this.onTrimEmitter.fire(1);
return this._array[this._getCyclicIndex(this._length - 1)]!;
}
@@ -167,7 +173,7 @@ export class CircularList<T> extends EventEmitter implements ICircularList<T> {
const countToTrim = (this._length + items.length) - this._maxLength;
this._startIndex += countToTrim;
this._length = this._maxLength;
this.emitMayRemoveListeners('trim', countToTrim);
this.onTrimEmitter.fire(countToTrim);
} else {
this._length += items.length;
}
@@ -183,7 +189,7 @@ export class CircularList<T> extends EventEmitter implements ICircularList<T> {
}
this._startIndex += count;
this._length -= count;
this.emitMayRemoveListeners('trim', count);
this.onTrimEmitter.fire(count);
}
public shiftElements(start: number, count: number, offset: number): void {
@@ -207,7 +213,7 @@ export class CircularList<T> extends EventEmitter implements ICircularList<T> {
while (this._length > this._maxLength) {
this._length--;
this._startIndex++;
this.emitMayRemoveListeners('trim', 1);
this.onTrimEmitter.fire(1);
}
}
} else {