"insert parameter" and "user parameter" buttons now work.

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@271 0fc631ac-6414-0410-93d0-97cfa31319b6

src/gui/control/text_ctrl.cpp

@@ -91,6 +91,9 @@ void TextCtrl::onChangeSet() {
 	} else {
 		setValue(nullptr);
 	}
+	// select the one and only editor
+	current_viewer = viewers.front().get();
+	current_editor = current_viewer->getEditor();
 }
 
 void TextCtrl::onInit() {