001/*
002 * #%L
003 * GwtMaterial
004 * %%
005 * Copyright (C) 2015 - 2017 GwtMaterialDesign
006 * %%
007 * Licensed under the Apache License, Version 2.0 (the "License");
008 * you may not use this file except in compliance with the License.
009 * You may obtain a copy of the License at
010 * 
011 *      http://www.apache.org/licenses/LICENSE-2.0
012 * 
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 * #L%
019 */
020package gwt.material.design.addins.client.fileuploader.events;
021
022import com.google.gwt.event.shared.EventHandler;
023import com.google.gwt.event.shared.GwtEvent;
024import gwt.material.design.addins.client.fileuploader.base.HasFileUpload;
025
026public class RemovedFileEvent<T> extends GwtEvent<RemovedFileEvent.RemovedFileHandler<T>> {
027
028    private static Type<RemovedFileHandler<?>> TYPE;
029
030    public interface RemovedFileHandler<T> extends EventHandler {
031        void onRemovedFile(RemovedFileEvent<T> event);
032    }
033
034    public static <T> void fire(HasFileUpload<T> source, T target) {
035        if (TYPE != null) {
036            RemovedFileEvent<T> event = new RemovedFileEvent<T>(target);
037            source.fireEvent(event);
038        }
039    }
040
041    public static Type<RemovedFileHandler<?>> getType() {
042        return TYPE != null ? TYPE : (TYPE = new Type<>());
043    }
044
045    private final T target;
046
047    protected RemovedFileEvent(T target) {
048        this.target = target;
049    }
050
051    @Override
052    public final Type<RemovedFileHandler<T>> getAssociatedType() {
053        return (Type) TYPE;
054    }
055
056    public T getTarget() {
057        return target;
058    }
059
060    @Override
061    protected void dispatch(RemovedFileHandler<T> handler) {
062        handler.onRemovedFile(this);
063    }
064}