Creating IndexedDB API wrappers

teavm-dom/src/main/java/org/teavm/dom/events/EventListener.java

@@ -23,6 +23,6 @@ import org.teavm.jso.JSObject;
  * @author Alexey Andreev
  */
 @JSFunctor
-public interface EventListener extends JSObject {
-    void handleEvent(Event evt);
+public interface EventListener<E extends Event> extends JSObject {
+    void handleEvent(E evt);
 }

teavm-dom/src/main/java/org/teavm/dom/events/EventTarget.java

@@ -22,13 +22,13 @@ import org.teavm.jso.JSObject;
  * @author Alexey Andreev
  */
 public interface EventTarget extends JSObject {
-    void addEventListener(String type, EventListener listener, boolean useCapture);
+    void addEventListener(String type, EventListener<?> listener, boolean useCapture);
 
-    void addEventListener(String type, EventListener listener);
+    void addEventListener(String type, EventListener<?> listener);
 
-    void removeEventListener(String type, EventListener listener, boolean useCapture);
+    void removeEventListener(String type, EventListener<?> listener, boolean useCapture);
 
-    void removeEventListener(String type, EventListener listener);
+    void removeEventListener(String type, EventListener<?> listener);
 
     boolean dispatchEvent(Event evt);
 }

teavm-dom/src/main/java/org/teavm/dom/html/HTMLBodyElement.java

@@ -15,6 +15,7 @@
  */
 package org.teavm.dom.html;
 
+import org.teavm.dom.events.Event;
 import org.teavm.dom.events.EventListener;
 import org.teavm.jso.JSProperty;
 
@@ -24,24 +25,24 @@ import org.teavm.jso.JSProperty;
  */
 public interface HTMLBodyElement extends HTMLElement {
     @JSProperty("onbeforeunload")
-    void setOnBeforeUnload(EventListener listener);
+    void setOnBeforeUnload(EventListener<Event> listener);
 
     @JSProperty("onerror")
-    void setOnError(EventListener listener);
+    void setOnError(EventListener<Event> listener);
 
     @JSProperty("onload")
-    void setOnLoad(EventListener listener);
+    void setOnLoad(EventListener<Event> listener);
 
     @JSProperty("onmessage")
-    void setOnMessage(EventListener listener);
+    void setOnMessage(EventListener<Event> listener);
 
     @JSProperty("onoffline")
-    void setOnOffline(EventListener listener);
+    void setOnOffline(EventListener<Event> listener);
 
     @JSProperty("ononline")
-    void setOnOnline(EventListener listener);
+    void setOnOnline(EventListener<Event> listener);
 
     @JSProperty("ononunload")
-    void setOnUnload(EventListener listener);
+    void setOnUnload(EventListener<Event> listener);
 }
 

teavm-dom/src/main/java/org/teavm/dom/indexeddb/EventHandler.java

@@ -0,0 +1,28 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.jso.JSFunctor;
+import org.teavm.jso.JSObject;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+@JSFunctor
+public interface EventHandler extends JSObject {
+    void handleEvent();
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBCountRequest.java

@@ -0,0 +1,27 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.jso.JSProperty;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface IDBCountRequest extends IDBRequest {
+    @JSProperty
+    int getResult();
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBCursor.java

@@ -0,0 +1,26 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.jso.JSObject;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface IDBCursor extends JSObject {
+
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBCursorRequest.java

@@ -0,0 +1,27 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.jso.JSProperty;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface IDBCursorRequest extends IDBRequest {
+    @JSProperty
+    IDBCursor getResult();
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBDatabase.java

@@ -0,0 +1,65 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.dom.events.EventTarget;
+import org.teavm.jso.JSProperty;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface IDBDatabase extends EventTarget {
+    String TRANSACTION_READONLY = "readonly";
+
+    String TRANSACTION_READWRITE = "readwrite";
+
+    String TRANSACTION_VERSIONCHANGE = "versionchange";
+
+    @JSProperty
+    String getName();
+
+    @JSProperty
+    int getVersion();
+
+    @JSProperty
+    String[] getObjectStoreNames();
+
+    IDBObjectStore createObjectStore(String name, IDBObjectStoreParameters optionalParameters);
+
+    IDBObjectStore createObjectStore(String name);
+
+    void deleteObjectStore(String name);
+
+    IDBTransaction transaction(String storeName, String transactionMode);
+
+    IDBTransaction transaction(String storeName);
+
+    IDBTransaction transaction(String[] storeNames, String transactionMode);
+
+    IDBTransaction transaction(String[] storeNames);
+
+    void close();
+
+    @JSProperty("onabort")
+    void setOnAbort(EventHandler handler);
+
+    @JSProperty("onerror")
+    void setOnError(EventHandler handler);
+
+    @JSProperty("onversionchange")
+    void setOnVersionChange(EventHandler handler);
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBError.java

@@ -0,0 +1,28 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.jso.JSObject;
+import org.teavm.jso.JSProperty;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public abstract class IDBError implements JSObject {
+    @JSProperty
+    public abstract String getName();
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBFactory.java

@@ -0,0 +1,48 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.jso.JS;
+import org.teavm.jso.JSBody;
+import org.teavm.jso.JSObject;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public abstract class IDBFactory implements JSObject {
+    public static boolean isSupported() {
+        return !JS.isUndefined(getInstanceImpl());
+    }
+
+    public static IDBFactory getInstance() {
+        IDBFactory factory = getInstanceImpl();
+        if (JS.isUndefined(factory)) {
+            throw new IllegalStateException("IndexedDB is not supported in this browser");
+        }
+        return factory;
+    }
+
+    @JSBody(params = {}, script = "return window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || " +
+            "window.msIndexedDB;")
+    static native IDBFactory getInstanceImpl();
+
+    public abstract IDBOpenDBRequest open(String name, int version);
+
+    public abstract IDBOpenDBRequest deleteDatabase(String name);
+
+    public abstract int cmp(JSObject a, JSObject b);
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBGetRequest.java

@@ -0,0 +1,28 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.jso.JSObject;
+import org.teavm.jso.JSProperty;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface IDBGetRequest extends IDBRequest {
+    @JSProperty
+    JSObject getResult();
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBIndex.java

@@ -0,0 +1,26 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.jso.JSObject;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface IDBIndex extends JSObject {
+
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBObjectStore.java

@@ -0,0 +1,73 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.jso.*;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public abstract class IDBObjectStore implements JSObject {
+    @JSProperty
+    public abstract String getName();
+
+    @JSProperty("keyPath")
+    abstract JSObject getKeyPathImpl();
+
+    public final String[] getKeyPath() {
+        JSObject result = getKeyPathImpl();
+        if (JS.getType(result) == JSType.STRING) {
+            return new String[] { JS.unwrapString(result) };
+        } else {
+            return JS.unwrapArray((JSStringArray)result);
+        }
+    }
+
+    @JSProperty
+    public abstract String[] getIndexNames();
+
+    @JSProperty
+    public abstract boolean isAutoIncrement();
+
+    public abstract IDBRequest put(JSObject value, JSObject key);
+
+    public abstract IDBRequest put(JSObject value);
+
+    public abstract IDBRequest add(JSObject value, JSObject key);
+
+    public abstract IDBRequest add(JSObject value);
+
+    public abstract IDBRequest delete(JSObject key);
+
+    public abstract IDBGetRequest get(JSObject key);
+
+    public abstract IDBRequest clear();
+
+    public abstract IDBCursorRequest openCursor();
+
+    public abstract IDBIndex createIndex(String name, String key);
+
+    public abstract IDBIndex createIndex(String name, String[] keys);
+
+    public abstract IDBIndex index(String name);
+
+    public abstract void deleteIndex(String name);
+
+    public abstract IDBCountRequest count();
+
+    public abstract IDBCountRequest count(JSObject key);
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBObjectStoreParameters.java

@@ -0,0 +1,45 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.jso.JSBody;
+import org.teavm.jso.JSObject;
+import org.teavm.jso.JSProperty;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public abstract class IDBObjectStoreParameters implements JSObject {
+    @JSBody(params = "", script = "return {};")
+    public static native IDBObjectStoreParameters create();
+
+    public final IDBObjectStoreParameters keyPath(String... keys) {
+        setKeyPath(keys);
+        return this;
+    }
+
+    public final IDBObjectStoreParameters autoIncrement(boolean autoIncrement) {
+        setAutoIncrement(autoIncrement);
+        return this;
+    }
+
+    @JSProperty
+    abstract void setKeyPath(String[] keys);
+
+    @JSProperty
+    abstract void setAutoIncrement(boolean autoIncrement);
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBOpenDBRequest.java

@@ -0,0 +1,31 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.dom.events.EventListener;
+import org.teavm.jso.JSProperty;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface IDBOpenDBRequest extends IDBRequest {
+    @JSProperty
+    void setOnBlocked(EventHandler handler);
+
+    @JSProperty("onupgradeneeded")
+    void setOnUpgradeNeeded(EventListener<IDBVersionChangeEvent> listener);
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBRequest.java

@@ -0,0 +1,46 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.dom.events.EventTarget;
+import org.teavm.jso.JSProperty;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface IDBRequest extends EventTarget {
+    String STATE_PENDING = "pending";
+    String STATE_DONE = "done";
+
+    @JSProperty
+    IDBError getError();
+
+    @JSProperty
+    IDBRequestSource getSource();
+
+    @JSProperty
+    IDBTransaction getTransaction();
+
+    @JSProperty
+    String getReadyState();
+
+    @JSProperty("onerror")
+    void setOnError(EventHandler handler);
+
+    @JSProperty("onsuccess")
+    void setOnSuccess(EventHandler handler);
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBRequestSource.java

@@ -0,0 +1,25 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.jso.JSObject;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface IDBRequestSource extends JSObject {
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBTransaction.java

@@ -0,0 +1,26 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.jso.JSObject;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface IDBTransaction extends JSObject {
+
+}

teavm-dom/src/main/java/org/teavm/dom/indexeddb/IDBVersionChangeEvent.java

@@ -0,0 +1,31 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.dom.indexeddb;
+
+import org.teavm.dom.events.Event;
+import org.teavm.jso.JSProperty;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface IDBVersionChangeEvent extends Event {
+    @JSProperty
+    int getOldVersion();
+
+    @JSProperty
+    int getNewVersion();
+}

teavm-jso/src/main/java/org/teavm/jso/JS.java

@@ -15,6 +15,7 @@
  */
 package org.teavm.jso;
 
+import java.lang.reflect.Array;
 import java.util.Iterator;
 import org.teavm.dependency.PluggableDependency;
 import org.teavm.javascript.spi.InjectedBy;
@@ -347,6 +348,58 @@ public final class JS {
     @InjectedBy(JSNativeGenerator.class)
     public static native char unwrapCharacter(JSObject obj);
 
+    public static <T extends JSObject> T[] unwrapArray(Class<T> type, JSArray<T> array) {
+        @SuppressWarnings("unchecked")
+        T[] result = (T[])Array.newInstance(type, array.getLength());
+        for (int i = 0; i < result.length; ++i) {
+            result[i] = array.get(i);
+        }
+        return result;
+    }
+
+    public static <T extends JSObject> T[][] unwrapArray2(Class<T> type, JSArray<JSArray<T>> array) {
+        @SuppressWarnings("unchecked")
+        T[][] result = (T[][])Array.newInstance(Array.newInstance(type, 0).getClass(), array.getLength());
+        for (int i = 0; i < result.length; ++i) {
+            result[i] = unwrapArray(type, array.get(i));
+        }
+        return result;
+    }
+
+    public static <T extends JSObject> T[][][] unwrapArray3(Class<T> type, JSArray<JSArray<JSArray<T>>> array) {
+        Class<?> baseType = Array.newInstance(type, 0).getClass();
+        @SuppressWarnings("unchecked")
+        T[][][] result = (T[][][])Array.newInstance(Array.newInstance(baseType, 0).getClass(), array.getLength());
+        for (int i = 0; i < result.length; ++i) {
+            result[i] = unwrapArray2(type, array.get(i));
+        }
+        return result;
+    }
+
+    public static String[] unwrapArray(JSStringArray array) {
+        String[] result = new String[array.getLength()];
+        for (int i = 0; i < result.length; ++i) {
+            result[i] = array.get(i);
+        }
+        return result;
+    }
+
+    public static String[][] unwrapArray2(JSArray<JSStringArray> array) {
+        String[][] result = new String[array.getLength()][];
+        for (int i = 0; i < result.length; ++i) {
+            result[i] = unwrapArray(array.get(i));
+        }
+        return result;
+    }
+
+    public static String[][][] unwrapArray3(JSArray<JSArray<JSStringArray>> array) {
+        String[][][] result = new String[array.getLength()][][];
+        for (int i = 0; i < result.length; ++i) {
+            result[i] = unwrapArray2(array.get(i));
+        }
+        return result;
+    }
+
     @InjectedBy(JSNativeGenerator.class)
     public static native boolean isUndefined(JSObject obj);