Fix for JToggleButton (we had no specific UI for Darcula/IntelliJ before)

platform/platform-impl/src/com/intellij/ide/ui/laf/darcula/ui/DarculaButtonUI.java

@@ -50,7 +50,7 @@ public class DarculaButtonUI extends BasicButtonUI {
       final Insets ins = border.getBorderInsets(c);
       final int yOff = (ins.top + ins.bottom) / 4;
       if (!square) {
-        if (((JButton)c).isDefaultButton()) {
+        if (c instanceof JButton && ((JButton)c).isDefaultButton()) {
           ((Graphics2D)g).setPaint(UIUtil.getGradientPaint(0, 0, getSelectedButtonColor1(), 0, c.getHeight(), getSelectedButtonColor2()));
         }
         else {
@@ -100,7 +100,7 @@ public class DarculaButtonUI extends BasicButtonUI {
   @Override
   public void update(Graphics g, JComponent c) {
     super.update(g, c);
-    if (((JButton)c).isDefaultButton() && !SystemInfo.isMac) {
+    if (c instanceof JButton && ((JButton)c).isDefaultButton() && !SystemInfo.isMac) {
       if (!c.getFont().isBold()) {
        c.setFont(c.getFont().deriveFont(Font.BOLD));
       }

platform/platform-impl/src/com/intellij/ide/ui/laf/darcula/ui/DarculaToggleButtonUI.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2000-2014 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.ide.ui.laf.darcula.ui;
+
+import javax.swing.*;
+import javax.swing.plaf.ComponentUI;
+
+public class DarculaToggleButtonUI extends DarculaButtonUI {
+  @SuppressWarnings("MethodOverridesStaticMethodOfSuperclass")
+  public static ComponentUI createUI(JComponent c) {
+    return new DarculaToggleButtonUI();
+  }
+}