diff --git a/.idea/modules.xml b/.idea/modules.xml
index 7e950955..4fac18b4 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -2,8 +2,8 @@
 <project version="4">
   <component name="ProjectModuleManager">
     <modules>
-      <module fileurl="file://$PROJECT_DIR$/Auto.js.iml" filepath="$PROJECT_DIR$/Auto.js.iml" />
       <module fileurl="file://E:\YiBin\AndroidStudioProjects\NoRootScriptDroid\Auto.js.iml" filepath="E:\YiBin\AndroidStudioProjects\NoRootScriptDroid\Auto.js.iml" />
+      <module fileurl="file://$PROJECT_DIR$/NoRootScriptDroid.iml" filepath="$PROJECT_DIR$/NoRootScriptDroid.iml" />
       <module fileurl="file://C:\Users\Stardust\Documents\AndroidProjects\Auto.js\NoRootScriptDroid.iml" filepath="C:\Users\Stardust\Documents\AndroidProjects\Auto.js\NoRootScriptDroid.iml" />
       <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
       <module fileurl="file://$PROJECT_DIR$/autojs/autojs.iml" filepath="$PROJECT_DIR$/autojs/autojs.iml" />
diff --git a/app/src/main/java/com/stardust/scriptdroid/autojs/AutoJs.java b/app/src/main/java/com/stardust/scriptdroid/autojs/AutoJs.java
index efdf45bb..5fe8743c 100644
--- a/app/src/main/java/com/stardust/scriptdroid/autojs/AutoJs.java
+++ b/app/src/main/java/com/stardust/scriptdroid/autojs/AutoJs.java
@@ -15,7 +15,7 @@ import com.stardust.autojs.engine.LoopBasedJavaScriptEngine;
 import com.stardust.autojs.engine.RootAutomatorEngine;
 import com.stardust.autojs.engine.ScriptEngine;
 import com.stardust.autojs.engine.ScriptEngineManager;
-import com.stardust.autojs.core.bridge.AccessibilityBridge;
+import com.stardust.autojs.core.accessibility.AccessibilityBridge;
 import com.stardust.autojs.runtime.ScriptRuntime;
 import com.stardust.autojs.core.console.GlobalStardustConsole;
 import com.stardust.autojs.runtime.exception.ScriptException;
diff --git a/autojs/src/main/java/com/stardust/autojs/core/bridge/AccessibilityBridge.java b/autojs/src/main/java/com/stardust/autojs/core/accessibility/AccessibilityBridge.java
similarity index 96%
rename from autojs/src/main/java/com/stardust/autojs/core/bridge/AccessibilityBridge.java
rename to autojs/src/main/java/com/stardust/autojs/core/accessibility/AccessibilityBridge.java
index e7c014e5..8d100675 100644
--- a/autojs/src/main/java/com/stardust/autojs/core/bridge/AccessibilityBridge.java
+++ b/autojs/src/main/java/com/stardust/autojs/core/accessibility/AccessibilityBridge.java
@@ -1,4 +1,4 @@
-package com.stardust.autojs.core.bridge;
+package com.stardust.autojs.core.accessibility;
 
 import android.content.Context;
 import android.support.annotation.NonNull;
diff --git a/autojs/src/main/java/com/stardust/autojs/core/accessibility/ScriptUiObject.java b/autojs/src/main/java/com/stardust/autojs/core/accessibility/ScriptUiObject.java
deleted file mode 100644
index 9bbc47af..00000000
--- a/autojs/src/main/java/com/stardust/autojs/core/accessibility/ScriptUiObject.java
+++ /dev/null
@@ -1,36 +0,0 @@
-package com.stardust.autojs.core.accessibility;
-
-import com.stardust.autojs.core.bridge.ScriptBridges;
-import com.stardust.automator.UiObject;
-import com.stardust.automator.UiObjectCollection;
-import com.stardust.view.accessibility.AccessibilityNodeInfoAllocator;
-
-/**
- * Created by Stardust on 2017/10/31.
- */
-
-public class ScriptUiObject extends UiObject {
-
-    private ScriptBridges mScriptBridges;
-
-    public ScriptUiObject(Object info, ScriptBridges scriptBridges) {
-        super(info);
-        mScriptBridges = scriptBridges;
-    }
-
-    public ScriptUiObject(Object info, AccessibilityNodeInfoAllocator allocator, boolean isRootNode, ScriptBridges scriptBridges) {
-        super(info, allocator, isRootNode);
-        mScriptBridges = scriptBridges;
-    }
-
-    public ScriptUiObject(Object info, AccessibilityNodeInfoAllocator allocator, ScriptBridges scriptBridges) {
-        super(info, allocator);
-        mScriptBridges = scriptBridges;
-    }
-
-
-    @Override
-    public Object children() {
-        return super.children();
-    }
-}
diff --git a/autojs/src/main/java/com/stardust/autojs/core/accessibility/SimpleActionAutomator.java b/autojs/src/main/java/com/stardust/autojs/core/accessibility/SimpleActionAutomator.java
index 2b1180cb..f301d902 100644
--- a/autojs/src/main/java/com/stardust/autojs/core/accessibility/SimpleActionAutomator.java
+++ b/autojs/src/main/java/com/stardust/autojs/core/accessibility/SimpleActionAutomator.java
@@ -10,7 +10,6 @@ import android.util.Log;
 import android.view.accessibility.AccessibilityNodeInfo;
 
 import com.stardust.autojs.annotation.ScriptInterface;
-import com.stardust.autojs.core.bridge.AccessibilityBridge;
 import com.stardust.autojs.runtime.ScriptRuntime;
 import com.stardust.autojs.runtime.accessibility.AutomatorConfig;
 import com.stardust.automator.GlobalActionAutomator;
@@ -21,6 +20,9 @@ import com.stardust.automator.simple_action.SimpleAction;
 import com.stardust.util.DeveloperUtils;
 import com.stardust.util.ScreenMetrics;
 
+import org.mozilla.javascript.Context;
+import org.mozilla.javascript.NativeJavaObject;
+
 /**
  * Created by Stardust on 2017/4/2.
  */
diff --git a/autojs/src/main/java/com/stardust/autojs/core/accessibility/UiSelector.java b/autojs/src/main/java/com/stardust/autojs/core/accessibility/UiSelector.java
index 8d75935c..8893e549 100644
--- a/autojs/src/main/java/com/stardust/autojs/core/accessibility/UiSelector.java
+++ b/autojs/src/main/java/com/stardust/autojs/core/accessibility/UiSelector.java
@@ -1,15 +1,11 @@
 package com.stardust.autojs.core.accessibility;
 
 import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
 import android.util.Log;
 import android.view.accessibility.AccessibilityNodeInfo;
 
 import com.stardust.autojs.annotation.ScriptInterface;
-import com.stardust.autojs.core.bridge.AccessibilityBridge;
-import com.stardust.autojs.core.bridge.ScriptBridges;
 import com.stardust.autojs.runtime.accessibility.AutomatorConfig;
-import com.stardust.autojs.runtime.api.UI;
 import com.stardust.autojs.runtime.exception.ScriptInterruptedException;
 import com.stardust.automator.ActionArgument;
 import com.stardust.automator.UiGlobalSelector;
@@ -59,33 +55,22 @@ public class UiSelector extends UiGlobalSelector {
 
 
     private static final String TAG = "UiSelector";
-    private static Object sEmptyUiCollection;
 
     private AccessibilityBridge mAccessibilityBridge;
     private AccessibilityNodeInfoAllocator mAllocator = null;
-    private ScriptBridges mScriptBridges;
 
-    public UiSelector(ScriptBridges bridges) {
-        this(bridges, null);
+    public UiSelector(AccessibilityBridge accessibilityBridge) {
+        mAccessibilityBridge = accessibilityBridge;
     }
 
-    public UiSelector(ScriptBridges bridges, AccessibilityNodeInfoAllocator allocator) {
-        mAccessibilityBridge = bridges.getAccessibilityBrige();
-        mScriptBridges = bridges;
+    public UiSelector(AccessibilityBridge accessibilityBridge, AccessibilityNodeInfoAllocator allocator) {
+        mAccessibilityBridge = accessibilityBridge;
         mAllocator = allocator;
     }
 
     @NonNull
     @ScriptInterface
-    public Object find() {
-        UiObjectCollection c = findInner();
-        if(c == UiObjectCollection.EMPTY){
-            return emptyUiCollection();
-        }
-        return mScriptBridges.wrapAsArray(c);
-    }
-
-    protected UiObjectCollection findInner(){
+    public UiObjectCollection find() {
         ensureAccessibilityServiceEnabled();
         if (AutomatorConfig.isUnintendedGuardEnabled() && isRunningPackageSelf()) {
             Log.d(TAG, "isSelfPackage return null");
@@ -95,22 +80,7 @@ public class UiSelector extends UiGlobalSelector {
         if (root == null) {
             return UiObjectCollection.EMPTY;
         }
-        return super.findOf(UiObject.createRoot(root, mAllocator));
-    }
-
-    @SuppressWarnings("unchecked")
-    @Override
-    public Object findOf(UiObject node) {
-        return mScriptBridges.wrapAsArray((Iterable<?>) super.findOf(node));
-    }
-
-
-    @NonNull
-    private Object emptyUiCollection() {
-        if(sEmptyUiCollection == null){
-            sEmptyUiCollection = mScriptBridges.wrapAsArray(UiObjectCollection.EMPTY);
-        }
-        return sEmptyUiCollection;
+        return findOf(UiObject.createRoot(root, mAllocator));
     }
 
 
@@ -125,15 +95,8 @@ public class UiSelector extends UiGlobalSelector {
 
     @ScriptInterface
     @NonNull
-    public Object untilFind() {
-        return mScriptBridges.wrapAsArray(untilFindInner());
-    }
-
-
-    @ScriptInterface
-    @NonNull
-    protected UiObjectCollection untilFindInner() {
-        UiObjectCollection uiObjectCollection = findInner();
+    public UiObjectCollection untilFind() {
+        UiObjectCollection uiObjectCollection = find();
         while (uiObjectCollection.empty()) {
             if (Thread.currentThread().isInterrupted()) {
                 throw new ScriptInterruptedException();
@@ -143,7 +106,7 @@ public class UiSelector extends UiGlobalSelector {
             } catch (InterruptedException e) {
                 throw new ScriptInterruptedException();
             }
-            uiObjectCollection = findInner();
+            uiObjectCollection = find();
         }
         return uiObjectCollection;
     }
@@ -155,13 +118,13 @@ public class UiSelector extends UiGlobalSelector {
 
     @ScriptInterface
     public boolean exists() {
-        UiObjectCollection collection = findInner();
+        UiObjectCollection collection = find();
         return collection.nonEmpty();
     }
 
     @NonNull
     public UiObject untilFindOne() {
-        UiObjectCollection collection = untilFindInner();
+        UiObjectCollection collection = untilFind();
         return new UiObject(collection.get(0).getInfo());
     }
 
@@ -188,7 +151,7 @@ public class UiSelector extends UiGlobalSelector {
 
 
     private boolean performAction(int action, ActionArgument... arguments) {
-        return untilFindInner().performAction(action, arguments);
+        return untilFind().performAction(action, arguments);
     }
 
 
diff --git a/autojs/src/main/java/com/stardust/autojs/core/bridge/ScriptBridges.java b/autojs/src/main/java/com/stardust/autojs/core/bridge/ScriptBridges.java
deleted file mode 100644
index 07b8f724..00000000
--- a/autojs/src/main/java/com/stardust/autojs/core/bridge/ScriptBridges.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package com.stardust.autojs.core.bridge;
-
-/**
- * Created by Stardust on 2017/10/31.
- */
-
-public abstract class ScriptBridges {
-
-
-    public abstract Object toArray(Object[] nativeArray);
-
-    public abstract Object toString(String nativeString);
-
-    public abstract Object callFunction(Object function, Object target, Object[] args);
-
-    public abstract Object wrapAsArray(Iterable<?> iterable);
-
-    public abstract AccessibilityBridge getAccessibilityBrige();
-
-}
diff --git a/autojs/src/main/java/com/stardust/autojs/runtime/ScriptBridges.java b/autojs/src/main/java/com/stardust/autojs/runtime/ScriptBridges.java
index d232b254..404497bb 100644
--- a/autojs/src/main/java/com/stardust/autojs/runtime/ScriptBridges.java
+++ b/autojs/src/main/java/com/stardust/autojs/runtime/ScriptBridges.java
@@ -6,6 +6,7 @@ package com.stardust.autojs.runtime;
 
 public class ScriptBridges {
 
+
     public interface FunctionCaller {
 
         Object[] NO_ARGUMENTS = new Object[0];
@@ -24,6 +25,4 @@ public class ScriptBridges {
             throw new IllegalStateException("no function caller");
         return mFunctionCaller.call(func, target, args);
     }
-
-
 }
diff --git a/autojs/src/main/java/com/stardust/autojs/runtime/ScriptRuntime.java b/autojs/src/main/java/com/stardust/autojs/runtime/ScriptRuntime.java
index ed7233dc..e6385aef 100644
--- a/autojs/src/main/java/com/stardust/autojs/runtime/ScriptRuntime.java
+++ b/autojs/src/main/java/com/stardust/autojs/runtime/ScriptRuntime.java
@@ -7,7 +7,7 @@ import android.os.Looper;
 import com.stardust.autojs.R;
 import com.stardust.autojs.ScriptEngineService;
 import com.stardust.autojs.annotation.ScriptVariable;
-import com.stardust.autojs.core.bridge.AccessibilityBridge;
+import com.stardust.autojs.core.accessibility.AccessibilityBridge;
 import com.stardust.autojs.engine.ScriptEngine;
 import com.stardust.autojs.rhino.AndroidClassLoader;
 import com.stardust.autojs.runtime.api.AbstractShell;
@@ -25,6 +25,7 @@ import com.stardust.autojs.runtime.exception.ScriptEnvironmentException;
 import com.stardust.autojs.runtime.exception.ScriptException;
 import com.stardust.autojs.runtime.exception.ScriptInterruptedException;
 import com.stardust.autojs.core.accessibility.SimpleActionAutomator;
+import com.stardust.concurrent.VolatileBox;
 import com.stardust.autojs.runtime.api.UI;
 import com.stardust.concurrent.VolatileDispose;
 import com.stardust.pio.UncheckedIOException;
diff --git a/autojs/src/main/java/com/stardust/autojs/runtime/api/Events.java b/autojs/src/main/java/com/stardust/autojs/runtime/api/Events.java
index 033de836..988e0d35 100644
--- a/autojs/src/main/java/com/stardust/autojs/runtime/api/Events.java
+++ b/autojs/src/main/java/com/stardust/autojs/runtime/api/Events.java
@@ -6,9 +6,10 @@ import android.graphics.Point;
 import android.os.Build;
 import android.os.Handler;
 import android.view.KeyEvent;
+import android.view.accessibility.AccessibilityEvent;
 
 import com.stardust.autojs.R;
-import com.stardust.autojs.core.bridge.AccessibilityBridge;
+import com.stardust.autojs.core.accessibility.AccessibilityBridge;
 import com.stardust.autojs.core.eventloop.EventEmitter;
 import com.stardust.notification.Notification;
 import com.stardust.notification.NotificationListenerService;
diff --git a/automator/src/main/java/com/stardust/automator/UiGlobalSelector.java b/automator/src/main/java/com/stardust/automator/UiGlobalSelector.java
index f73d4b34..d1ddaeb2 100644
--- a/automator/src/main/java/com/stardust/automator/UiGlobalSelector.java
+++ b/automator/src/main/java/com/stardust/automator/UiGlobalSelector.java
@@ -351,19 +351,13 @@ public class UiGlobalSelector {
         return this;
     }
 
-
-    /**
-     * Note: The method use a dirty template to make its child class can
-     *  change the type of return value.
-     */
-    @SuppressWarnings("unchecked")
-    public <T> T findOf(UiObject node) {
+    public UiObjectCollection findOf(UiObject node) {
         List<UiObject> list = new ArrayList<>();
         list.add(node);
         for (ListFilter filter : mFilters) {
             list = filter.filter(list);
         }
-        return (T) UiObjectCollection.of(list);
+        return UiObjectCollection.of(list);
     }
 
     @Nullable
diff --git a/automator/src/main/java/com/stardust/automator/UiObject.java b/automator/src/main/java/com/stardust/automator/UiObject.java
index ca6f8402..0da339af 100644
--- a/automator/src/main/java/com/stardust/automator/UiObject.java
+++ b/automator/src/main/java/com/stardust/automator/UiObject.java
@@ -97,7 +97,7 @@ public class UiObject extends AccessibilityNodeInfoCompat {
         }
     }
 
-    public <T> T find(UiGlobalSelector selector) {
+    public UiObjectCollection find(UiGlobalSelector selector) {
         return selector.findOf(this);
     }
 
@@ -105,13 +105,12 @@ public class UiObject extends AccessibilityNodeInfoCompat {
         return selector.findOneOf(this);
     }
 
-    @SuppressWarnings("unchecked")
-    public <T> T children() {
+    public UiObjectCollection children() {
         ArrayList<AccessibilityNodeInfoCompat> list = new ArrayList<>(getChildCount());
         for (int i = 0; i < getChildCount(); i++) {
             list.add(getChild(i));
         }
-        return (T) UiObjectCollection.ofCompat(list);
+        return UiObjectCollection.ofCompat(list);
     }
 
     public int childCount() {
diff --git a/automator/src/main/java/com/stardust/automator/UiObjectCollection.java b/automator/src/main/java/com/stardust/automator/UiObjectCollection.java
index 70b518d8..4f89a4e0 100644
--- a/automator/src/main/java/com/stardust/automator/UiObjectCollection.java
+++ b/automator/src/main/java/com/stardust/automator/UiObjectCollection.java
@@ -2,7 +2,6 @@ package com.stardust.automator;
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat;
 import android.view.accessibility.AccessibilityNodeInfo;
@@ -11,11 +10,8 @@ import com.stardust.util.Consumer;
 import com.stardust.util.Func1;
 
 import java.util.ArrayList;
-import java.util.Collection;
 import java.util.Collections;
-import java.util.Iterator;
 import java.util.List;
-import java.util.ListIterator;
 
 import static android.support.v4.view.accessibility.AccessibilityNodeInfoCompat.*;
 import static android.support.v4.view.accessibility.AccessibilityNodeInfoCompat.AccessibilityActionCompat.ACTION_CONTEXT_CLICK;
@@ -31,7 +27,7 @@ import static android.support.v4.view.accessibility.AccessibilityNodeInfoCompat.
  * Created by Stardust on 2017/3/9.
  */
 
-public class UiObjectCollection implements List<UiObject> {
+public class UiObjectCollection {
 
     public static final UiObjectCollection EMPTY = UiObjectCollection.of(Collections.<UiObject>emptyList());
 
@@ -53,7 +49,7 @@ public class UiObjectCollection implements List<UiObject> {
 
     private List<UiObject> mNodes;
 
-    protected UiObjectCollection(List<UiObject> list) {
+    private UiObjectCollection(List<UiObject> list) {
         mNodes = list;
     }
 
@@ -193,126 +189,14 @@ public class UiObjectCollection implements List<UiObject> {
                 new ActionArgument.IntActionArgument(ACTION_ARGUMENT_COLUMN_INT, column));
     }
 
-    @Override
     public UiObject get(int i) {
         return mNodes.get(i);
     }
 
-    @Override
-    public UiObject set(int index, UiObject element) {
-        return mNodes.set(index, element);
-    }
-
-    @Override
-    public void add(int index, UiObject element) {
-        mNodes.add(index, element);
-    }
-
-    @Override
-    public UiObject remove(int index) {
-        return mNodes.remove(index);
-    }
-
-    @Override
-    public int indexOf(Object o) {
-        return mNodes.indexOf(o);
-    }
-
-    @Override
-    public int lastIndexOf(Object o) {
-        return mNodes.lastIndexOf(o);
-    }
-
-    @NonNull
-    @Override
-    public ListIterator<UiObject> listIterator() {
-        return mNodes.listIterator();
-    }
-
-    @NonNull
-    @Override
-    public ListIterator<UiObject> listIterator(int index) {
-        return mNodes.listIterator(index);
-    }
-
-    @NonNull
-    @Override
-    public UiObjectCollection subList(int fromIndex, int toIndex) {
-        return UiObjectCollection.of(mNodes.subList(fromIndex, toIndex));
-    }
-
     public int size() {
         return mNodes.size();
     }
 
-    @Override
-    public boolean isEmpty() {
-        return mNodes.isEmpty();
-    }
-
-    @Override
-    public boolean contains(Object o) {
-        return mNodes.contains(o);
-    }
-
-    @NonNull
-    @Override
-    public Iterator<UiObject> iterator() {
-        return mNodes.iterator();
-    }
-
-    @NonNull
-    @Override
-    public Object[] toArray() {
-        return mNodes.toArray();
-    }
-
-    @NonNull
-    @Override
-    public <T> T[] toArray(@NonNull T[] a) {
-        return mNodes.toArray(a);
-    }
-
-    @Override
-    public boolean add(UiObject uiObject) {
-        return mNodes.add(uiObject);
-    }
-
-    @Override
-    public boolean remove(Object o) {
-        return mNodes.remove(o);
-    }
-
-    @Override
-    public boolean containsAll(@NonNull Collection<?> c) {
-        return mNodes.containsAll(c);
-    }
-
-    @Override
-    public boolean addAll(@NonNull Collection<? extends UiObject> c) {
-        return mNodes.addAll(c);
-    }
-
-    @Override
-    public boolean addAll(int index, @NonNull Collection<? extends UiObject> c) {
-        return mNodes.addAll(index, c);
-    }
-
-    @Override
-    public boolean removeAll(@NonNull Collection<?> c) {
-        return mNodes.retainAll(c);
-    }
-
-    @Override
-    public boolean retainAll(@NonNull Collection<?> c) {
-        return mNodes.retainAll(c);
-    }
-
-    @Override
-    public void clear() {
-        mNodes.clear();
-    }
-
     public UiObjectCollection each(Consumer<UiObject> consumer) {
         for (UiObject uiObject : mNodes) {
             consumer.accept(uiObject);
@@ -332,7 +216,7 @@ public class UiObjectCollection implements List<UiObject> {
     public UiObjectCollection find(UiGlobalSelector selector) {
         List<UiObject> list = new ArrayList<>();
         for (UiObject object : mNodes) {
-            list.addAll(((UiObjectCollection) selector.findOf(object)).mNodes);
+            list.addAll(selector.findOf(object).mNodes);
         }
         return of(list);
     }
@@ -348,11 +232,11 @@ public class UiObjectCollection implements List<UiObject> {
     }
 
     public boolean empty() {
-        return isEmpty();
+        return size() == 0;
     }
 
     public boolean nonEmpty() {
-        return !isEmpty();
+        return size() != 0;
     }
 
 }
diff --git a/inrt/src/main/java/com/stardust/auojs/inrt/rt/AutoJs.java b/inrt/src/main/java/com/stardust/auojs/inrt/rt/AutoJs.java
index 39f66911..723434ec 100644
--- a/inrt/src/main/java/com/stardust/auojs/inrt/rt/AutoJs.java
+++ b/inrt/src/main/java/com/stardust/auojs/inrt/rt/AutoJs.java
@@ -13,7 +13,7 @@ import com.stardust.auojs.inrt.App;
 import com.stardust.auojs.inrt.R;
 import com.stardust.autojs.ScriptEngineService;
 import com.stardust.autojs.ScriptEngineServiceBuilder;
-import com.stardust.autojs.core.bridge.AccessibilityBridge;
+import com.stardust.autojs.core.accessibility.AccessibilityBridge;
 import com.stardust.autojs.core.console.GlobalStardustConsole;
 import com.stardust.autojs.core.inputevent.InputEventObserver;
 import com.stardust.autojs.core.record.accessibility.AccessibilityActionRecorder;