Method isAreaEmpty

src/gridstack-engine.ts:366–369

* Check if the specified rectangular area is empty (no nodes occupy any part of it). * * @param x the x coordinate (column) of the area to check * @param y the y coordinate (row) of the area to check * @param w the width in columns of the area to check * @param h the height in rows of

(x: number, y: number, w: number, h: number)

   * }
   */
  public isAreaEmpty(x: number, y: number, w: number, h: number): boolean {
    const nn: GridStackNode = {x: x || 0, y: y || 0, w: w || 1, h: h || 1};
    return !this.collide(nn);
  }

  /**
   * Re-layout grid items to reclaim any empty space.