Example usage for com.vaadin.ui Upload.Receiver Upload.Receiver

Introduction

In this page you can find the example usage for com.vaadin.ui Upload.Receiver Upload.Receiver.

Prototype

Upload.Receiver

Source Link

Usage

From source file:org.bubblecloud.ilves.module.content.AssetFlowlet.java

License:Apache License

@Override
public void initialize() {
    entityManager = getSite().getSiteContext().getObject(EntityManager.class);

    final GridLayout gridLayout = new GridLayout(1, 3);
    gridLayout.setSizeFull();/*w  ww.  ja va  2s.  c  o m*/
    gridLayout.setMargin(false);
    gridLayout.setSpacing(true);
    gridLayout.setRowExpandRatio(1, 1f);
    setViewContent(gridLayout);

    assetEditor = new ValidatingEditor(
            FieldSetDescriptorRegister.getFieldSetDescriptor(Asset.class).getFieldDescriptors());
    assetEditor.setCaption("Asset");
    assetEditor.addListener(this);
    gridLayout.addComponent(assetEditor, 0, 1);

    final Upload upload = new Upload(getSite().localize("field-file-upload"), new Upload.Receiver() {
        @Override
        public OutputStream receiveUpload(String filename, String mimeType) {
            try {
                temporaryFile = File.createTempFile(entity.getAssetId(), ".upload");
                return new FileOutputStream(temporaryFile, false);
            } catch (IOException e) {
                throw new SiteException("Unable to create temporary file for upload.", e);
            }
        }
    });
    upload.setButtonCaption(getSite().localize("button-start-upload"));
    upload.addSucceededListener(new Upload.SucceededListener() {
        @Override
        public void uploadSucceeded(Upload.SucceededEvent event) {
            if (event.getLength() == 0) {
                return;
            }
            if (temporaryFile.length() > Long
                    .parseLong(PropertiesUtil.getProperty("site", "asset-maximum-size"))) {
                Notification.show(getSite().localize("message-file-too-large"),
                        Notification.Type.ERROR_MESSAGE);
                return;
            }

            entity.setName(event.getFilename().substring(0, event.getFilename().lastIndexOf('.')));
            entity.setExtension(event.getFilename().substring(event.getFilename().lastIndexOf('.') + 1));
            entity.setType(event.getMIMEType());
            entity.setSize((int) event.getLength());

            assetEditor.setItem(new BeanItem<Asset>(entity), assetEditor.isNewItem());
            save();
        }
    });
    gridLayout.addComponent(upload, 0, 0);

    final HorizontalLayout buttonLayout = new HorizontalLayout();
    buttonLayout.setSpacing(true);
    gridLayout.addComponent(buttonLayout, 0, 2);

    saveButton = getSite().getButton("save");
    buttonLayout.addComponent(saveButton);
    saveButton.addClickListener(new ClickListener() {
        /** Serial version UID. */
        private static final long serialVersionUID = 1L;

        @Override
        public void buttonClick(final ClickEvent event) {
            if (isValid()) {
                save();
            } else {
                Notification.show(getSite().localize("message-invalid-form-asset"),
                        Notification.Type.HUMANIZED_MESSAGE);
            }
        }
    });

    discardButton = getSite().getButton("discard");
    buttonLayout.addComponent(discardButton);
    discardButton.addClickListener(new ClickListener() {
        /** Serial version UID. */
        private static final long serialVersionUID = 1L;

        @Override
        public void buttonClick(final ClickEvent event) {
            assetEditor.discard();
            if (temporaryFile != null) {
                temporaryFile.deleteOnExit();
                temporaryFile = null;
            }
        }
    });

    editPrivilegesButton = getSite().getButton("edit-privileges");
    buttonLayout.addComponent(editPrivilegesButton);
    editPrivilegesButton.addClickListener(new ClickListener() {
        @Override
        public void buttonClick(ClickEvent event) {
            final PrivilegesFlowlet privilegesFlowlet = getFlow().getFlowlet(PrivilegesFlowlet.class);
            privilegesFlowlet.edit(entity.getName(), entity.getAssetId(), "view", "edit");
            getFlow().forward(PrivilegesFlowlet.class);
        }
    });
}

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