nopaque/web/app/static/js/nopaque.InteractionElement.js

class InteractionElement {
  constructor(htmlId="",
              disabledBefore=true,
              disabledAfter=false,
              hideBefore=true,
              hideAfter=false) {
  this.htmlId = htmlId;
  this.callbacks = {};
  this.disabledBefore = disabledBefore;
  this.disabledAfter = disabledAfter;
  this.hideBefore = hideBefore;
  this.hideAfter = hideAfter;
  }

  getElement() {
    this.interactionStatusElement = document.getElementById(this.htmlId);
    return this.interactionStatusElement
  }

  setCallback(trigger, callback, bindThis, args=[]) {
    this.callbacks[trigger] = {
                                "function": callback,
                                "bindThis": bindThis,
                                "args": args
                              };
  }

  bindThisToCallback(trigger) {
    let callback = this.callbacks[trigger];
    let boundedCallback = callback["function"].bind(callback.bindThis);
    return boundedCallback;
  }
}