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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | 1x 1x 96x 173x 173x 59x 66x 66x 3x 2x 1x 1x 1x 1x 2x 2x 2x 1x 1x 1x 4x | import { IDestroyable } from "../environment/objectStates.js";
import { IBounds2, Bounds2 } from "./bounds2.js";
export interface IParent<T extends IDestroyable> extends IBounds2, IDestroyable {
readonly children: ReadonlyArray<T>;
add(...children: T[]): void;
insert(index: number, ...children: T[]): boolean;
remove(...children: T[]): void;
}
export abstract class Parent<T extends IDestroyable> extends Bounds2 implements IParent<T> {
private readonly _children: T[];
public get children(): ReadonlyArray<T> {
return this._children;
}
public constructor() {
super();
this._children = new Array<T>();
}
public add(...children: T[]): void {
children.forEach(child => {
this._children.push(child);
this.initializeChild(child);
});
}
public insert(index: number, ...children: T[]): boolean {
if (index < 0 || index >= this._children.length || this._children.length < 1)
return false;
children.forEach(child => {
this._children.splice(index, 0, child);
this.initializeChild(child);
});
return true;
}
public remove(...children: T[]): void {
children.forEach(child => {
const index = this._children.indexOf(child);
if (index < 0 || index >= this._children.length)
return;
this._children.splice(index, 1);
this.destroyChild(child);
});
}
public destroy(): void {
this._children.forEach(child => this.destroyChild(child));
}
protected abstract initializeChild(child: T): void;
protected abstract destroyChild(child: T): void;
} |