/**
* Delete.js
*
* Released under LGPL License.
* Copyright (c) 1999-2017 Ephox Corp. All rights reserved
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*/
define(
'tinymce.plugins.lists.core.Delete',
[
'tinymce.core.api.dom.RangeUtils',
'tinymce.core.dom.TreeWalker',
'tinymce.core.util.VK',
'tinymce.plugins.lists.actions.ToggleList',
'tinymce.plugins.lists.core.Bookmark',
'tinymce.plugins.lists.core.NodeType',
'tinymce.plugins.lists.core.NormalizeLists',
'tinymce.plugins.lists.core.Range',
'tinymce.plugins.lists.core.Selection'
],
function (RangeUtils, TreeWalker, VK, ToggleList, Bookmark, NodeType, NormalizeLists, Range, Selection) {
var findNextCaretContainer = function (editor, rng, isForward, root) {
var node = rng.startContainer, offset = rng.startOffset;
var nonEmptyBlocks, walker;
if (node.nodeType === 3 && (isForward ? offset < node.data.length : offset > 0)) {
return node;
}
nonEmptyBlocks = editor.schema.getNonEmptyElements();
if (node.nodeType === 1) {
node = RangeUtils.getNode(node, offset);
}
walker = new TreeWalker(node, root);
// Delete at <li>|<br></li> then jump over the bogus br
if (isForward) {
if (NodeType.isBogusBr(editor.dom, node)) {
walker.next();
}
}
while ((node = walker[isForward ? 'next' : 'prev2']())) {
if (node.nodeName === 'LI' && !node.hasChildNodes()) {
return node;
}
if (nonEmptyBlocks[node.nodeName]) {
return node;
}
if (node.nodeType === 3 && node.data.length > 0) {
return node;
}
}
};
var hasOnlyOneBlockChild = function (dom, elm) {
var childNodes = elm.childNodes;
return childNodes.length === 1 && !NodeType.isListNode(childNodes[0]) && dom.isBlock(childNodes[0]);
};
var unwrapSingleBlockChild = function (dom, elm) {
if (hasOnlyOneBlockChild(dom, elm)) {
dom.remove(elm.firstChild, true);
}
};
var moveChildren = function (dom, fromElm, toElm) {
var node, targetElm;
targetElm = hasOnlyOneBlockChild(dom, toElm) ? toElm.firstChild : toElm;
unwrapSingleBlockChild(dom, fromElm);
if (!NodeType.isEmpty(dom, fromElm, true)) {
while ((node = fromElm.firstChild)) {
targetElm.appendChild(node);
}
}
};
var mergeLiElements = function (dom, fromElm, toElm) {
var node, listNode, ul = fromElm.parentNode;
if (!NodeType.isChildOfBody(dom, fromElm) || !NodeType.isChildOfBody(dom, toElm)) {
return;
}
if (NodeType.isListNode(toElm.lastChild)) {
listNode = toElm.lastChild;
}
if (ul === toElm.lastChild) {
if (NodeType.isBr(ul.previousSibling)) {
dom.remove(ul.previousSibling);
}
}
node = toElm.lastChild;
if (node && NodeType.isBr(node) && fromElm.hasChildNodes()) {
dom.remove(node);
}
if (NodeType.isEmpty(dom, toElm, true)) {
dom.$(toElm).empty();
}
moveChildren(dom, fromElm, toElm);
if (listNode) {
toElm.appendChild(listNode);
}
dom.remove(fromElm);
if (NodeType.isEmpty(dom, ul) && ul !== dom.getRoot()) {
dom.remove(ul);
}
};
var mergeIntoEmptyLi = function (editor, fromLi, toLi) {
editor.dom.$(toLi).empty();
mergeLiElements(editor.dom, fromLi, toLi);
editor.selection.setCursorLocation(toLi);
};
var mergeForward = function (editor, rng, fromLi, toLi) {
var dom = editor.dom;
if (dom.isEmpty(toLi)) {
mergeIntoEmptyLi(editor, fromLi, toLi);
} else {
var bookmark = Bookmark.createBookmark(rng);
mergeLiElements(dom, fromLi, toLi);
editor.selection.setRng(Bookmark.resolveBookmark(bookmark));
}
};
var mergeBackward = function (editor, rng, fromLi, toLi) {
var bookmark = Bookmark.createBookmark(rng);
mergeLiElements(editor.dom, fromLi, toLi);
var resolvedBookmark = Bookmark.resolveBookmark(bookmark);
editor.selection.setRng(resolvedBookmark);
};
var backspaceDeleteFromListToListCaret = function (editor, isForward) {
var dom = editor.dom, selection = editor.selection;
var selectionStartElm = selection.getStart();
var root = Selection.getClosestListRootElm(editor, selectionStartElm);
var li = dom.getParent(selection.getStart(), 'LI', root);
var ul, rng, otherLi;
if (li) {
ul = li.parentNode;
if (ul === editor.getBody() && NodeType.isEmpty(dom, ul)) {
return true;
}
rng = Range.normalizeRange(selection.getRng(true));
otherLi = dom.getParent(findNextCaretContainer(editor, rng, isForward, root), 'LI', root);
if (otherLi && otherLi !== li) {
if (isForward) {
mergeForward(editor, rng, otherLi, li);
} else {
mergeBackward(editor, rng, li, otherLi);
}
return true;
} else if (!otherLi) {
if (!isForward && ToggleList.removeList(editor, ul.nodeName)) {
return true;
}
}
}
return false;
};
var removeBlock = function (dom, block, root) {
var parentBlock = dom.getParent(block.parentNode, dom.isBlock, root);
dom.remove(block);
if (parentBlock && dom.isEmpty(parentBlock)) {
dom.remove(parentBlock);
}
};
var backspaceDeleteIntoListCaret = function (editor, isForward) {
var dom = editor.dom;
var selectionStartElm = editor.selection.getStart();
var root = Selection.getClosestListRootElm(editor, selectionStartElm);
var block = dom.getParent(selectionStartElm, dom.isBlock, root);
if (block && dom.isEmpty(block)) {
var rng = Range.normalizeRange(editor.selection.getRng(true));
var otherLi = dom.getParent(findNextCaretContainer(editor, rng, isForward, root), 'LI', root);
if (otherLi) {
editor.undoManager.transact(function () {
removeBlock(dom, block, root);
ToggleList.mergeWithAdjacentLists(dom, otherLi.parentNode);
editor.selection.select(otherLi, true);
editor.selection.collapse(isForward);
});
return true;
}
}
return false;
};
var backspaceDeleteCaret = function (editor, isForward) {
return backspaceDeleteFromListToListCaret(editor, isForward) || backspaceDeleteIntoListCaret(editor, isForward);
};
var backspaceDeleteRange = function (editor) {
var selectionStartElm = editor.selection.getStart();
var root = Selection.getClosestListRootElm(editor, selectionStartElm);
var startListParent = editor.dom.getParent(selectionStartElm, 'LI,DT,DD', root);
if (startListParent || Selection.getSelectedListItems(editor).length > 0) {
editor.undoManager.transact(function () {
editor.execCommand('Delete');
NormalizeLists.normalizeLists(editor.dom, editor.getBody());
});
return true;
}
return false;
};
var backspaceDelete = function (editor, isForward) {
return editor.selection.isCollapsed() ? backspaceDeleteCaret(editor, isForward) : backspaceDeleteRange(editor);
};
var setup = function (editor) {
editor.on('keydown', function (e) {
if (e.keyCode === VK.BACKSPACE) {
if (backspaceDelete(editor, false)) {
e.preventDefault();
}
} else if (e.keyCode === VK.DELETE) {
if (backspaceDelete(editor, true)) {
e.preventDefault();
}
}
});
};
return {
setup: setup,
backspaceDelete: backspaceDelete
};
}
);
|
Download
