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import $ from 'jquery';
import dom from '../core/dom';
import range from '../core/range';
import Bullet from '../editing/Bullet';
/**
* @class editing.Typing
*
* Typing
*
*/
export default class Typing {
constructor(context) {
// a Bullet instance to toggle lists off
this.bullet = new Bullet();
this.options = context.options;
}
/**
* insert tab
*
* @param {WrappedRange} rng
* @param {Number} tabsize
*/
insertTab(rng, tabsize) {
const 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
*
* @param {jQuery} $editable
* @param {WrappedRange} rng Can be used in unit tests to "mock" the range
*
* blockquoteBreakingLevel
* 0 - No break, the new paragraph remains inside the quote
* 1 - Break the first blockquote in the ancestors list
* 2 - Break all blockquotes, so that the new paragraph is not quoted (this is the default)
*/
insertParagraph(editable, rng) {
rng = 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
const splitRoot = dom.ancestor(rng.sc, dom.isPara);
let nextPara;
// on paragraph: split paragraph
if (splitRoot) {
// if it is an empty line with li
if (dom.isLi(splitRoot) && (dom.isEmpty(splitRoot) || dom.deepestChildIsEmpty(splitRoot))) {
// toggle UL/OL and escape
this.bullet.toggleList(splitRoot.parentNode.nodeName);
return;
} else {
let blockquote = null;
if (this.options.blockquoteBreakingLevel === 1) {
blockquote = dom.ancestor(splitRoot, dom.isBlockquote);
} else if (this.options.blockquoteBreakingLevel === 2) {
blockquote = dom.lastAncestor(splitRoot, dom.isBlockquote);
}
if (blockquote) {
// We're inside a blockquote and options ask us to break it
nextPara = $(dom.emptyPara)[0];
// If the split is right before a <br>, remove it so that there's no "empty line"
// after the split in the new blockquote created
if (dom.isRightEdgePoint(rng.getStartPoint()) && dom.isBR(rng.sc.nextSibling)) {
$(rng.sc.nextSibling).remove();
}
const split = dom.splitTree(blockquote, rng.getStartPoint(), { isDiscardEmptySplits: true });
if (split) {
split.parentNode.insertBefore(nextPara, split);
} else {
dom.insertAfter(nextPara, blockquote); // There's no split if we were at the end of the blockquote
}
} else {
nextPara = dom.splitTree(splitRoot, rng.getStartPoint());
// not a blockquote, just insert the paragraph
let emptyAnchors = dom.listDescendant(splitRoot, dom.isEmptyAnchor);
emptyAnchors = emptyAnchors.concat(dom.listDescendant(nextPara, dom.isEmptyAnchor));
$.each(emptyAnchors, (idx, anchor) => {
dom.remove(anchor);
});
// replace empty heading, pre or custom-made styleTag with P tag
if ((dom.isHeading(nextPara) || dom.isPre(nextPara) || dom.isCustomStyleTag(nextPara)) && dom.isEmpty(nextPara)) {
nextPara = dom.replace(nextPara, 'p');
}
}
}
// no paragraph: insert empty paragraph
} else {
const 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);
}
}