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/*
* Copyright 2000-2014 Vaadin Ltd.
*
* 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 com.vaadin.tests.components.draganddropwrapper;
import java.io.OutputStream;
import org.apache.commons.io.output.NullOutputStream;
import com.vaadin.event.Transferable;
import com.vaadin.event.dd.DragAndDropEvent;
import com.vaadin.event.dd.DropHandler;
import com.vaadin.event.dd.acceptcriteria.AcceptAll;
import com.vaadin.event.dd.acceptcriteria.AcceptCriterion;
import com.vaadin.server.StreamVariable;
import com.vaadin.server.VaadinRequest;
import com.vaadin.shared.ui.label.ContentMode;
import com.vaadin.tests.components.AbstractTestUI;
import com.vaadin.ui.Button;
import com.vaadin.ui.DragAndDropWrapper;
import com.vaadin.ui.DragAndDropWrapper.WrapperTransferable;
import com.vaadin.ui.Html5File;
import com.vaadin.ui.Label;
public class DragAndDropBatchUpload extends AbstractTestUI {
private int batchId = 0;
private Label console = new Label("No activity detected yet",
ContentMode.HTML);
@Override
protected void setup(VaadinRequest request) {
final DragAndDropWrapper dndWrapper = new DragAndDropWrapper(
new Button("Upload here by drag and dropping"));
dndWrapper.setDropHandler(new DropHandler() {
@Override
public AcceptCriterion getAcceptCriterion() {
return AcceptAll.get();
}
@Override
public void drop(DragAndDropEvent event) {
Transferable transferable = event.getTransferable();
String consoleString = "<b>Drop batch number " + (++batchId)
+ "</b>";
if (transferable instanceof WrapperTransferable) {
WrapperTransferable wTransferable = (WrapperTransferable) transferable;
Html5File[] files = wTransferable.getFiles();
if (files != null) {
consoleString += "<br>" + files.length + " file(s):";
for (Html5File file : files) {
consoleString += "<br>" + file.getFileName();
file.setStreamVariable(new StreamVariable() {
@Override
public void streamingStarted(
StreamingStartEvent event) {
}
@Override
public void streamingFinished(
StreamingEndEvent event) {
}
@Override
public void streamingFailed(
StreamingErrorEvent event) {
}
@Override
public void onProgress(
StreamingProgressEvent event) {
}
@Override
public boolean listenProgress() {
return false;
}
@Override
public boolean isInterrupted() {
return false;
}
@Override
public OutputStream getOutputStream() {
return new NullOutputStream();
}
});
}
} else {
consoleString += "<br>No files detected...";
}
console.setValue(consoleString);
} else {
console.setValue(consoleString
+ "<br>Something else than files were dragged");
}
}
});
addComponent(dndWrapper);
addComponent(console);
}
@Override
protected String getTestDescription() {
return "Starting to upload a new batch before the old one must not reuse receivers";
}
@Override
protected Integer getTicketNumber() {
return 12330;
}
}
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