Method removeAll

src/gridstack-engine.ts:816–824

* Remove all nodes from the grid. * * @param removeDOM if true (default), marks all nodes for DOM removal * @param triggerEvent if true (default), triggers removal events * @returns the engine instance for chaining * * @example * engine.removeAll(); // Remove all nodes

(removeDOM = true, triggerEvent = true)

   * engine.removeAll(); // Remove all nodes
   */
  public removeAll(removeDOM = true, triggerEvent = true): GridStackEngine {
    delete this._layouts;
    if (!this.nodes.length) return this;
    removeDOM && this.nodes.forEach(n => n._removeDOM = true); // let CB remove actual HTML (used to set _id to null, but then we loose layout info)
    const removedNodes = this.nodes;
    this.removedNodes = triggerEvent ? removedNodes : [];
    this.nodes = [];
    return this._notify(removedNodes);
  }

  /**
   * Check if a node can be moved to a new position, considering layout constraints.