Method bubbleEvent

lib/handler_stack.js:49–94

(type, event)

  // returning @suppressPropagation or
  // @passEventToPage.
  bubbleEvent(type, event) {
    this.eventNumber += 1;
    const eventNumber = this.eventNumber;
    for (const handler of this.stack.slice().reverse()) {
      // A handler might have been removed (handler.id == null), so check; or there might just be no
      // handler for this type of event.
      if (!(handler != null ? handler.id : undefined) || !handler[type]) {
        if (this.debug) {
          this.logResult(eventNumber, type, event, handler, `skip [${(handler[type] != null)}]`);
        }
      } else {
        this.currentId = handler.id;
        const result = handler[type].call(this, event);
        if (this.debug) this.logResult(eventNumber, type, event, handler, result);
        if (result === this.passEventToPage) {
          return true;
        } else if (result === this.suppressPropagation) {
          if (type === "keydown") {
            DomUtils.consumeKeyup(event, null, true);
          } else {
            DomUtils.suppressPropagation(event);
          }
          return false;
        } else if (result === this.restartBubbling) {
          return this.bubbleEvent(type, event);
        } else if (
          (result === this.continueBubbling) || (result && (result !== this.suppressEvent))
        ) {
          true; // Do nothing, but continue bubbling.
        } else {
          // result is @suppressEvent or falsy.
          if (this.isChromeEvent(event)) {
            if (type === "keydown") {
              DomUtils.consumeKeyup(event);
            } else {
              DomUtils.suppressEvent(event);
            }
          }
          return false;
        }
      }
    }

    // None of our handlers care about this event, so pass it to the page.
    return true;
  }

  remove(id) {
    if (id == null) id = this.currentId;