Merge branch 't/11839'

CHANGES.md

@@ -13,6 +13,7 @@ Fixed Issues:
 * [#11872](http://dev.ckeditor.com/ticket/11872): Made [`element.addClass()`](http://docs.ckeditor.com/#!/api/CKEDITOR.dom.element-method-addClass) chainable symmetrically to [`element.removeClass()`](http://docs.ckeditor.com/#!/api/CKEDITOR.dom.element-method-removeClass).
 * [#11813](http://dev.ckeditor.com/ticket/11813): Fixed: Link lost while pasting captioned image and restoring undo snapshot ([Enhanced Image](http://ckeditor.com/addon/image2)).
 * [#11814](http://dev.ckeditor.com/ticket/11814): Fixed: _Link_ and _Unlink_ entries persistently displayed in [Enhanced Image](http://ckeditor.com/addon/image2) context menu.
+* [#11839](http://dev.ckeditor.com/ticket/11839): Fixed: [IE9] Caret jumps out of editable when resizing editor in source mode.
 
 Other changes:
 

plugins/sourcearea/plugin.js

@@ -77,14 +77,23 @@
 				editor.getCommand( 'source' ).setState( editor.mode == 'source' ? CKEDITOR.TRISTATE_ON : CKEDITOR.TRISTATE_OFF );
 			} );
 
+			var needsFocusHack = CKEDITOR.env.ie && CKEDITOR.env.version == 9;
+
 			function onResize() {
+				// We have to do something with focus on IE9, because if sourcearea had focus
+				// before being resized, the caret ends somewhere in the editor UI (#11839).
+				var wasActive = needsFocusHack && this.equals( CKEDITOR.document.getActive() );
+
 				// Holder rectange size is stretched by textarea,
 				// so hide it just for a moment.
 				this.hide();
 				this.setStyle( 'height', this.getParent().$.clientHeight + 'px' );
 				this.setStyle( 'width', this.getParent().$.clientWidth + 'px' );
 				// When we have proper holder size, show textarea again.
 				this.show();
+
+				if ( wasActive )
+					this.focus();
 			}
 		}
 	} );