Function onKeyDown

lib/big.js:419–462

(e)

  }

  function onKeyDown(e) {
    if (big.mode === "talk") {
      switch (e.key) {
        case "ArrowLeft":
        case "ArrowUp":
        case "PageUp":
          return reverse();
        case "ArrowRight":
        case "ArrowDown":
        case "PageDown":
          return forward();
      }
    }
    switch (e.key) {
      case "p":
        onPrint();
        break;
      case "t":
        onTalk();
        break;
      case "j":
        onJump();
        break;
    }
    if (big.mode === "jump") {
      var activeElement = document.activeElement;
      if (activeElement && activeElement.classList.contains("slide")) {
        var column = [];
        var startIndex = slideDivs.indexOf(activeElement.parentNode);
        var columnIndexes = getColumnIndexes(activeElement);
        jumpFocus(
          e,
          {
            ArrowLeft: startIndex - 1,
            ArrowRight: startIndex + 1,
            ArrowDown: columnIndexes.next,
            ArrowUp: columnIndexes.prev
          }[e.key]
        );
      } else if (e.key.indexOf("Arrow") === 0) {
        jumpFocus(e, 0);
      }
    }
  }

  function getColumnIndexes(activeElement) {
    var left = activeElement.getBoundingClientRect().left;