diff --git a/platform/platform-impl/src/com/intellij/internal/tree/ExpandAll.java b/platform/platform-impl/src/com/intellij/internal/tree/ExpandAll.java
new file mode 100644
index 000000000000..96de34321f31
--- /dev/null
+++ b/platform/platform-impl/src/com/intellij/internal/tree/ExpandAll.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2000-2012 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.internal.tree;
+
+import com.intellij.openapi.actionSystem.AnAction;
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.actionSystem.PlatformDataKeys;
+import com.intellij.util.ui.UIUtil;
+import com.intellij.util.ui.tree.TreeUtil;
+
+import javax.swing.*;
+import java.awt.*;
+
+/**
+ * @author Konstantin Bulenkov
+ */
+public class ExpandAll extends AnAction {
+  @Override
+  public void actionPerformed(AnActionEvent e) {
+    final Component c = e.getData(PlatformDataKeys.CONTEXT_COMPONENT);
+    if (c != null) {
+      final JTree tree = UIUtil.getParentOfType(JTree.class, c);
+      if (tree != null) {
+        TreeUtil.expandAll(tree);
+      }
+    }
+  }
+}
diff --git a/platform/platform-resources/src/idea/PlatformActions.xml b/platform/platform-resources/src/idea/PlatformActions.xml
index 8479f1c58c85..3fff505e0616 100644
--- a/platform/platform-resources/src/idea/PlatformActions.xml
+++ b/platform/platform-resources/src/idea/PlatformActions.xml
@@ -526,6 +526,7 @@
       <action id="UiInspector" internal="true" class="com.intellij.internal.inspector.UiInspectorAction" text="UI Inspector"/>
       <action id="ShowSplash" internal="true" class="com.intellij.ui.ShowSplashAction" text="Show Splash" />
       <action id="ValidationTest" internal="true" class="com.intellij.internal.validation.TestDialogWithValidationAction" text="Validation Dialog Test" />
+      <action id="TreeExpandAll" internal="true" class="com.intellij.internal.tree.ExpandAll" text="Expand Tree" />
       <separator/>
       <reference ref="MaintenanceGroup"/>