com.foc.vaadin.gui.components.upload.FVUpload_Document.java Source code

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Here is the source code for com.foc.vaadin.gui.components.upload.FVUpload_Document.java

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/*******************************************************************************
 * Copyright 2016 Antoine Nicolas SAMAHA
 * 
 * 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.foc.vaadin.gui.components.upload;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import com.foc.Globals;
import com.foc.IFocEnvironment;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.Label;
import com.vaadin.ui.Notification;
import com.vaadin.ui.Notification.Type;
import com.vaadin.ui.Upload;
import com.vaadin.ui.VerticalLayout;

@Deprecated
@SuppressWarnings("serial")
public class FVUpload_Document extends CustomComponent
        implements Upload.SucceededListener, Upload.FailedListener, Upload.Receiver {

    private VerticalLayout root = null;
    private Upload upload = null;
    private String fileName = null;
    private ByteArrayOutputStream byteArrayOutputStream = null;

    private FVDocumentReceiver documentReceiver = null;

    public FVUpload_Document() {
        root = new VerticalLayout();
        root.setSpacing(false);
        root.setMargin(false);
        setCompositionRoot(root);

        // Create the Upload component.
        upload = new Upload(null, this);
        upload.setImmediate(true);

        upload.setButtonCaption("Upload");

        upload.addSucceededListener((Upload.SucceededListener) this);
        upload.addFailedListener((Upload.FailedListener) this);

        root.addComponent(upload);
    }

    public void dispose() {
        root = null;
        upload = null;
        documentReceiver = null;
    }

    public FVDocumentReceiver getDocumentReceiver() {
        return documentReceiver;
    }

    public void setImageReceiver(FVDocumentReceiver documentReceiver) {
        this.documentReceiver = documentReceiver;
    }

    @Override
    public OutputStream receiveUpload(String fileName, String MIMEType) {
        Globals.logString("Receiving: " + fileName);
        this.fileName = fileName;
        byteArrayOutputStream = new ByteArrayOutputStream();
        return byteArrayOutputStream;
    }

    // This is called if the upload is finished.
    public void uploadSucceeded(Upload.SucceededEvent event) {
        root.addComponent(
                new Label("File " + event.getFilename() + " of type '" + event.getMIMEType() + "' uploaded."));
        long uploadSize = event.getLength();

        if (uploadSize < 1048576) {
            Globals.logString("Received: " + fileName);
            try {
                byte[] documentInByte = byteArrayOutputStream.toByteArray();
                byteArrayOutputStream.close();

                InputStream in = new ByteArrayInputStream(documentInByte);

                if (documentReceiver != null) {
                    documentReceiver.documentReceived(event, in);
                }

            } catch (Exception e) {
                Globals.logException(e);
            }
        } else {
            Globals.showNotification("Upload Failed", "Attachment file size accessed the allowed size",
                    IFocEnvironment.TYPE_ERROR_MESSAGE);
        }
    }

    // This is called if the upload fails.
    public void uploadFailed(Upload.FailedEvent event) {
        root.addComponent(
                new Label("Uploading " + event.getFilename() + " of type '" + event.getMIMEType() + "' failed."));
    }
}