1 files changed, 17 insertions, 10 deletions

diff --git a/sources/plugins/indentlist/plugin.js b/sources/plugins/indentlist/plugin.js
index 15c661f..0ee30c0 100644
--- a/sources/plugins/indentlist/plugin.js
+++ b/sources/plugins/indentlist/plugin.js
@@ -35,17 +35,24 @@
                                 // Indent and outdent lists with TAB/SHIFT+TAB key. Indenting can

                                 // be done for any list item that isn't the first child of the parent.

                                 editor.on( 'key', function( evt ) {

+                                        var path = editor.elementPath();

+

                                         if ( editor.mode != 'wysiwyg' )

                                                 return;

 

                                         if ( evt.data.keyCode == this.indentKey ) {

-                                                var list = this.getContext( editor.elementPath() );

+                                                // Prevent of getting context of empty path (#424)(https://dev.ckeditor.com/ticket/17028).

+                                                if ( !path ) {

+                                                        return;

+                                                }

+

+                                                var list = this.getContext( path );

 

                                                 if ( list ) {

                                                         // Don't indent if in first list item of the parent.

                                                         // Outdent, however, can always be done to collapse

                                                         // the list into a paragraph (div).

-                                                        if ( this.isIndent && CKEDITOR.plugins.indentList.firstItemInPath( this.context, editor.elementPath(), list ) )

+                                                        if ( this.isIndent && CKEDITOR.plugins.indentList.firstItemInPath( this.context, path, list ) )

                                                                 return;

 

                                                         // Exec related global indentation command. Global

@@ -109,7 +116,8 @@
         function indentList( editor ) {

                 var that = this,

                         database = this.database,

-                        context = this.context;

+                        context = this.context,

+                        range;

 

                 function indent( listNode ) {

                         // Our starting and ending points of the range might be inside some blocks under a list item...

@@ -164,7 +172,7 @@
 

                         for ( i = startItem.getCustomData( 'listarray_index' ); i <= lastItem.getCustomData( 'listarray_index' ); i++ ) {

                                 listArray[ i ].indent += indentOffset;

-                                // Make sure the newly created sublist get a brand-new element of the same type. (#5372)

+                                // Make sure the newly created sublist get a brand-new element of the same type. (http://dev.ckeditor.com/ticket/5372)

                                 if ( indentOffset > 0 ) {

                                         var listRoot = listArray[ i ].parent;

                                         listArray[ i ].parent = new CKEDITOR.dom.element( listRoot.getName(), listRoot.getDocument() );

@@ -179,7 +187,7 @@
                         var newList = CKEDITOR.plugins.list.arrayToList( listArray, database, null, editor.config.enterMode, listNode.getDirection() );

 

                         // Avoid nested <li> after outdent even they're visually same,

-                        // recording them for later refactoring.(#3982)

+                        // recording them for later refactoring.(http://dev.ckeditor.com/ticket/3982)

                         if ( !that.isIndent ) {

                                 var parentLiElement;

                                 if ( ( parentLiElement = listNode.getParent() ) && parentLiElement.is( 'li' ) ) {

@@ -207,7 +215,7 @@
                                         // Nest preceding <ul>/<ol> inside current <li> if any.

                                         while ( ( followingList = followingList.getNext() ) && followingList.is && followingList.getName() in context ) {

                                                 // IE requires a filler NBSP for nested list inside empty list item,

-                                                // otherwise the list item will be inaccessiable. (#4476)

+                                                // otherwise the list item will be inaccessiable. (http://dev.ckeditor.com/ticket/4476)

                                                 if ( CKEDITOR.env.needsNbspFiller && !li.getFirst( neitherWhitespacesNorBookmark ) )

                                                         li.append( range.document.createText( '\u00a0' ) );

 

@@ -226,14 +234,13 @@
 

                 var selection = editor.getSelection(),

                         ranges = selection && selection.getRanges(),

-                        iterator = ranges.createIterator(),

-                        range;

+                        iterator = ranges.createIterator();

 

                 while ( ( range = iterator.getNextRange() ) ) {

                         var nearestListBlock = range.getCommonAncestor();

 

                         while ( nearestListBlock && !( nearestListBlock.type == CKEDITOR.NODE_ELEMENT && context[ nearestListBlock.getName() ] ) ) {

-                                // Avoid having plugin propagate to parent of editor in inline mode by canceling the indentation. (#12796)

+                                // Avoid having plugin propagate to parent of editor in inline mode by canceling the indentation. (http://dev.ckeditor.com/ticket/12796)

                                 if ( editor.editable().equals( nearestListBlock ) ) {

                                         nearestListBlock = false;

                                         break;

@@ -248,7 +255,7 @@
                                         range.setEndAt( nearestListBlock, CKEDITOR.POSITION_BEFORE_END );

                         }

 

-                        // Avoid having selection enclose the entire list. (#6138)

+                        // Avoid having selection enclose the entire list. (http://dev.ckeditor.com/ticket/6138)

                         // [<ul><li>...</li></ul>] =><ul><li>[...]</li></ul>

                         if ( !nearestListBlock ) {

                                 var selectedNode = range.getEnclosedNode();