alpaca/dist/lib/summernote/src/js/base/editing/Typing.js

Alpaca provides the easiest and fastest way to generate interactive forms for the web and mobile devices. It runs simply as HTML5 or more elaborately using Bootstrap, jQuery Mobile or jQuery UI. Alpaca uses Handlebars to process JSON schema and provide

define([
  'summernote/base/core/dom',
  'summernote/base/core/range',
  'summernote/base/editing/Bullet'
], function (dom, range, Bullet) {

  /**
   * @class editing.Typing
   *
   * Typing
   *
   */
  var Typing = function () {

    // a Bullet instance to toggle lists off
    var bullet = new Bullet();

    /**
     * insert tab
     *
     * @param {WrappedRange} rng
     * @param {Number} tabsize
     */
    this.insertTab = function (rng, tabsize) {
      var tab = dom.createText(new Array(tabsize + 1).join(dom.NBSP_CHAR));
      rng = rng.deleteContents();
      rng.insertNode(tab, true);

      rng = range.create(tab, tabsize);
      rng.select();
    };

    /**
     * insert paragraph
     */
    this.insertParagraph = function (editable) {
      var rng = range.create(editable);

      // deleteContents on range.
      rng = rng.deleteContents();

      // Wrap range if it needs to be wrapped by paragraph
      rng = rng.wrapBodyInlineWithPara();

      // finding paragraph
      var splitRoot = dom.ancestor(rng.sc, dom.isPara);

      var nextPara;
      // on paragraph: split paragraph
      if (splitRoot) {
        // if it is an empty line with li
        if (dom.isEmpty(splitRoot) && dom.isLi(splitRoot)) {
          // toogle UL/OL and escape
          bullet.toggleList(splitRoot.parentNode.nodeName);
          return;
        // if it is an empty line with para on blockquote
        } else if (dom.isEmpty(splitRoot) && dom.isPara(splitRoot) && dom.isBlockquote(splitRoot.parentNode)) {
          // escape blockquote
          dom.insertAfter(splitRoot, splitRoot.parentNode);
          nextPara = splitRoot;
        // if new line has content (not a line break)
        } else {
          nextPara = dom.splitTree(splitRoot, rng.getStartPoint());

          var emptyAnchors = dom.listDescendant(splitRoot, dom.isEmptyAnchor);
          emptyAnchors = emptyAnchors.concat(dom.listDescendant(nextPara, dom.isEmptyAnchor));

          $.each(emptyAnchors, function (idx, anchor) {
            dom.remove(anchor);
          });

          // replace empty heading or pre with P tag
          if ((dom.isHeading(nextPara) || dom.isPre(nextPara)) && dom.isEmpty(nextPara)) {
            nextPara = dom.replace(nextPara, 'p');
          }
        }
      // no paragraph: insert empty paragraph
      } else {
        var next = rng.sc.childNodes[rng.so];
        nextPara = $(dom.emptyPara)[0];
        if (next) {
          rng.sc.insertBefore(nextPara, next);
        } else {
          rng.sc.appendChild(nextPara);
        }
      }

      range.create(nextPara, 0).normalize().select().scrollIntoView(editable);
    };
  };

  return Typing;
});