com.sksamuel.jqm4gwt.events.JQMEventFactory Maven / Gradle / Ivy

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package com.sksamuel.jqm4gwt.events;

import java.util.HashMap;
import java.util.Map;

import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.event.shared.EventHandler;
import com.google.gwt.event.shared.GwtEvent;
import com.google.gwt.event.shared.GwtEvent.Type;

public class JQMEventFactory {

    private JQMEventFactory() {} // static class

    private interface EventInstantiator {
        JQMEvent create(JavaScriptObject jQueryEvent);
        GwtEvent.Type getType();
    }

    private static final Map> instantiators =
            new HashMap>();

    static {
        instantiators.put(JQMComponentEvents.CHANGE, new EventInstantiator() {

            private final Type TYPE = new Type();

            @Override
            public JQMEvent create(JavaScriptObject jQueryEvent) {
                return new JQMEvent(jQueryEvent, getType());
            }

            @Override
            public Type getType() {
                return TYPE;
            }});

        instantiators.put(JQMComponentEvents.INPUT, new EventInstantiator() {

            private final Type TYPE = new Type();

            @Override
            public JQMEvent create(JavaScriptObject jQueryEvent) {
                return new JQMEvent(jQueryEvent, getType());
            }

            @Override
            public Type getType() {
                return TYPE;
            }});

        instantiators.put(JQMComponentEvents.VCLICK, new EventInstantiator() {

            private final Type TYPE = new Type();

            @Override
            public JQMEvent create(JavaScriptObject jQueryEvent) {
                return new JQMEvent(jQueryEvent, getType());
            }

            @Override
            public Type getType() {
                return TYPE;
            }});

        instantiators.put(JQMComponentEvents.TAP_EVENT, new EventInstantiator() {

            @Override
            public JQMEvent create(JavaScriptObject jQueryEvent) {
                return new TapEvent(jQueryEvent);
            }

            @Override
            public Type getType() {
                return TapEvent.getType();
            }});

        instantiators.put(JQMComponentEvents.TAP_HOLD_EVENT, new EventInstantiator() {

            @Override
            public JQMEvent create(JavaScriptObject jQueryEvent) {
                return new TapHoldEvent(jQueryEvent);
            }

            @Override
            public Type getType() {
                return TapHoldEvent.getType();
            }});

        instantiators.put(JQMComponentEvents.ORIENTATIONCHANGE, new EventInstantiator() {

            private final Type TYPE = new Type();

            @Override
            public JQMEvent create(JavaScriptObject jQueryEvent) {
                return new JQMEvent(jQueryEvent, getType());
            }

            @Override
            public Type getType() {
                return TYPE;
            }});
    }

    public static JQMEvent createEvent(String jqmEventName, JavaScriptObject jQueryEvent) {
        EventInstantiator i = instantiators.get(jqmEventName);
        if (i != null) return i.create(jQueryEvent);
        throw new RuntimeException("Cannot create event: " + jqmEventName);
    }

    public static Type getType(String jqmEventName) {
        EventInstantiator i = instantiators.get(jqmEventName);
        if (i != null) return i.getType();
        throw new RuntimeException("Unknown event: " + jqmEventName);
    }

    /**
     * @param handlerClass - needed for getting typed result
     */
    public static  Type getType(String jqmEventName, Class handlerClass) {
        Type t = getType(jqmEventName);
        @SuppressWarnings("unchecked")
        Type rslt = (Type) t;
        return rslt;
    }

}