| 20 | private _disposed: boolean = false |
| 21 | |
| 22 | public get onEvent(): IEvent<T> { |
| 23 | if (!this._event) { |
| 24 | this._event = (listener: IListener<T>) => { |
| 25 | this._listeners.push(listener) |
| 26 | const disposable = { |
| 27 | dispose: () => { |
| 28 | if (!this._disposed) { |
| 29 | for (let i = 0; i < this._listeners.length; i++) { |
| 30 | if (this._listeners[i] === listener) { |
| 31 | this._listeners.splice(i, 1) |
| 32 | return |
| 33 | } |
| 34 | } |
| 35 | } |
| 36 | } |
| 37 | } |
| 38 | return disposable |
| 39 | } |
| 40 | } |
| 41 | return this._event |
| 42 | } |
| 43 | |
| 44 | public fire(arg: T): void { |
| 45 | for (let i = 0; i < this._listeners.length; i++) { |