export class Prop2<U, T> {
	constructor(private values: T[], private onChangedCallback: (index?: U, oldValue?: T, value?: T) => void, private callbackThis: Object) {
		
	}
	
	get(index: U): T {
		return this.values[<any>index];
	}
	
	set(index: U, value: T): void {
		if (this.get(index) === value) return;
		var oldValue = this.values[<any>index];
		this.values[<any>index] = value;
		if (this.onChangedCallback) this.onChangedCallback.call(this.callbackThis, index, oldValue, value);
	}
	
	toString(): string {
		return '[Prop2 ' + this.values.join(', ') + ']';
	}
}

export default Prop2;