gwt jsinterop for jQuery

jQuery.java

import com.google.gwt.dom.client.Element;
import jsinterop.annotations.JsFunction;
import jsinterop.annotations.JsMethod;
import jsinterop.annotations.JsPackage;
import jsinterop.annotations.JsType;

/**
 * Created by bduisenov on 27/10/15.
 */
@JsType(namespace = JsPackage.GLOBAL, name = "jQuery", isNative = true)
public class jQuery {

    @FunctionalInterface
    @JsFunction
    public interface func {
        void apply();
    }

    @FunctionalInterface
    @JsFunction
    public interface func1 {
        void apply(String val);
    }

    public native void click(func func);

    public native jQuery keypress(func func);

    public native jQuery keydown(func func);

    public native jQuery keyup(func func);

    public native jQuery focus();

    public native void change(func func);

    public native jQuery on(String action, func func);

    public native jQuery filter(String predicate);

    public native String val();

    public native void val(String val);

    public native String text();

    public native void text(String text);

    public native jQuery append(String html);

    public native jQuery append(jQuery jq);

    public native jQuery before(Element element);

    public native jQuery before(jQuery jq);

    public native jQuery children();

    public native jQuery first();

    public native jQuery append(Element jq);

    public native jQuery remove();

    public native jQuery hide();

    public native jQuery hide(int duration);

    public native jQuery hide(int duration, func complete);

    public native jQuery show();

    public native jQuery show(int duration);

    public native jQuery show(int duration, func complete);

    public native boolean is(String selector);

    public native String css(String propertyName);

    public native String css(String propertyName, String val);

    public native jQuery addClass(String val);

    public native jQuery removeClass(String val);

    public native jQuery toggleClass(String val);

    public native jQuery toggleClass(String val, boolean state);

    public native boolean hasClass(String val);

    public native String attr(String name);

    public native jQuery attr(String name, String val);

    public native jQuery fadeIn(int duration);

    public native jQuery fadeIn(int duration, func onComplete);

    public native jQuery fadeOut(int duration);

    public native jQuery fadeOut(int duration, func onComplete);

    public native jQuery width(String val);

    public native jQuery width(int val);

    public native int width();

    public native jQuery find(String selector);

    public native String html();

    public native jQuery html(String html);

    @JsType(namespace = "jQuery", name = "Deferred", isNative = true)
    public static class Deferred {
        public native Deferred done(func func);
        public native Deferred fail(func func);
        public native Deferred reject();
        public native Deferred then(func doneCallbacks, func failCallbacks);
        public native String state();
        public native Deferred always(func func);
        public native Deferred resolve(String val);
        public native Deferred resolve();
    }

    public static class Alias {

        @JsMethod(namespace = JsPackage.GLOBAL, name = "jQuery")
        public static native jQuery $(String selector);

        @JsMethod(namespace = JsPackage.GLOBAL, name = "jQuery")
        public static native jQuery $(jQuery element);

        @JsMethod(namespace = JsPackage.GLOBAL, name = "jQuery")
        public static native jQuery $(Element element);

        @JsMethod(namespace = JsPackage.GLOBAL, name = "jQuery")
        public static native jQuery $(String selector, jQuery context);

        @JsMethod(namespace = JsPackage.GLOBAL, name = "jQuery")
        public static native jQuery $(String selector, Element context);
    }

}