export class Toolbar {
  sim = undefined;
  tools = [];

  constructor(sim) {
    this.sim = sim;

    // Create ourselves a div, as child of sim's div
    const div = document.createElement('div');
    this.div = div;
    this.sim.div.appendChild(div);
    div.style.position = 'relative';
    div.style.width = '20EM';
    div.style.top = 0;
    div.style.left = 0;
    div.style.zIndex = 2;
  }

  // tool: instance of Tool
  addTool(tool) {
    this.div.appendChild(tool.div);
    this.tools.push(tool);
  }

  frame() {
    for (let tool in this.tools) {
      // TODO: tool.frame()
      tool.frame();
    }
  }
}