X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=_source%2Fplugins%2Fundo%2Fplugin.js;h=89819f0d808ff71f3934fcb6e559a85e52ed5677;hb=f0610347140239143439a511ee2bd48cb784f470;hp=94744eadcf4c8bf36bf7fe76a4da102dafbaf727;hpb=4e90e78dc97789709ee7404359a5517540c27553;p=ckeditor.git

diff --git a/_source/plugins/undo/plugin.js b/_source/plugins/undo/plugin.js
index 94744ea..89819f0 100644
--- a/_source/plugins/undo/plugin.js
+++ b/_source/plugins/undo/plugin.js
@@ -90,7 +90,7 @@ For licensing, see LICENSE.html or http://ckeditor.com/license
 			// Make the undo manager available only in wysiwyg mode.
 			editor.on( 'mode', function()
 				{
-					undoManager.enabled = editor.mode == 'wysiwyg';
+					undoManager.enabled = editor.readOnly ? false : editor.mode == 'wysiwyg';
 					undoManager.onChange();
 				});
 
@@ -545,6 +545,7 @@ For licensing, see LICENSE.html or http://ckeditor.com/license
 /**
  * The number of undo steps to be saved. The higher this setting value the more
  * memory is used for it.
+ * @name CKEDITOR.config.undoStackSize
  * @type Number
  * @default 20
  * @example