package com.vaadin.tests.components.ui;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import com.vaadin.server.StreamResource;
import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractTestUI;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.Notification;
import com.vaadin.ui.Upload;
import com.vaadin.ui.VerticalLayout;
public class MultipleUIUploadTest extends AbstractTestUI {
private MemoryBuffer buffer = new MemoryBuffer();
private Upload upload;
@Override
protected String getTestDescription() {
return "Using Upload with multiple UIs causes NPE."
+ " Open test in first browser window and open the file selection window."
+ " Then open test in second browser window (without ?restartApplication) and click the notification button."
+ " Then go back to the first window, select a file, and click Upload."
+ " Click notification button to ensure the upload was received successfully.";
}
@Override
protected Integer getTicketNumber() {
return 10112;
}
@Override
protected void setup(VaadinRequest request) {
final VerticalLayout layout = new VerticalLayout();
layout.setMargin(true);
layout.setSpacing(true);
setContent(layout);
upload = new Upload(null, buffer);
upload.setId("upload");
layout.addComponent(upload);
Button button = new Button("show notification");
button.setId("notify");
button.addClickListener(new ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
Notification.show("uploaded: " + buffer.getFileName());
}
});
layout.addComponent(button);
}
public class MemoryBuffer implements StreamResource.StreamSource,
Upload.Receiver {
ByteArrayOutputStream outputBuffer = null;
String mimeType;
String fileName;
public MemoryBuffer() {
}
@Override
public InputStream getStream() {
if (outputBuffer == null) {
return null;
}
return new ByteArrayInputStream(outputBuffer.toByteArray());
}
/**
* @see com.vaadin.ui.Upload.Receiver#receiveUpload(String, String)
*/
@Override
public OutputStream receiveUpload(String filename, String MIMEType) {
fileName = filename;
mimeType = MIMEType;
outputBuffer = new ByteArrayOutputStream() {
@Override
public synchronized void write(byte[] b, int off, int len) {
super.write(b, off, len);
}
};
return outputBuffer;
}
/**
* Returns the fileName.
*
* @return String
*/
public String getFileName() {
return fileName;
}
/**
* Returns the mimeType.
*
* @return String
*/
public String getMimeType() {
return mimeType;
}
}
}