Java Code Examples for com.vaadin.server.StreamResource#StreamSource

The following examples show how to use com.vaadin.server.StreamResource#StreamSource . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: ArtifactDetailsLayout.java    From hawkbit with Eclipse Public License 1.0 6 votes vote down vote up 
private StreamResource createStreamResource(final Long id) {

        Optional<Artifact> artifact = this.artifactManagement.get(id);
        if (artifact.isPresent()) {
            Optional<AbstractDbArtifact> file = artifactManagement.loadArtifactBinary(artifact.get().getSha1Hash());
            return new StreamResource(new StreamResource.StreamSource() {
                private static final long serialVersionUID = 1L;

                @Override
                public InputStream getStream() {
                    if (file.isPresent()) {
                        return file.get().getFileInputStream();
                    }
                    return null;
                }
            }, artifact.get().getFilename());
        }
        return null;
    }
Example 2
Source File: PolicyEditor.java    From XACML with MIT License 6 votes vote down vote up 
protected void initializeDownload() {
	//
	// Create a stream resource pointing to the file
	//
	StreamResource r = new StreamResource(new StreamResource.StreamSource() {
		private static final long serialVersionUID = 1L;

		@Override
		public InputStream getStream() {
			try {
				return new FileInputStream(self.file);
			} catch (Exception e) {
				logger.error("Failed to open input stream " + self.file);
			}
			return null;
		}
	}, self.file.getName());
	r.setCacheTime(-1);
	r.setMIMEType("application/xml");
	//
	// Extend a downloader to attach to the Export Button
	//
	FileDownloader downloader = new FileDownloader(r);
	downloader.extend(this.buttonExport);
}
Example 3
Source File: ExternalAttachmentDownloadLink.java    From cia with Apache License 2.0 5 votes vote down vote up 
@Override
public void attach() {
	super.attach();

	final StreamResource.StreamSource source = new StreamSourceImplementation(fileUrl);
	final StreamResource resource = new StreamResource(source, fileName);

	resource.getStream().setParameter("Content-Disposition", "attachment;filename=\"" + fileName + "\"");
	resource.setMIMEType("application/" + fileType);
	resource.setCacheTime(0);

	setResource(resource);
}
Example 4
Source File: PageReadViewImpl.java    From mycollab with GNU Affero General Public License v3.0 5 votes vote down vote up 
@Override
protected HorizontalLayout createButtonControls() {
    ProjectPreviewFormControlsGenerator<Page> pagesPreviewForm = new ProjectPreviewFormControlsGenerator<>(previewForm);
    HorizontalLayout buttonControls = pagesPreviewForm.createButtonControls(
            ProjectPreviewFormControlsGenerator.ADD_BTN_PRESENTED
                    | ProjectPreviewFormControlsGenerator.EDIT_BTN_PRESENTED
                    | ProjectPreviewFormControlsGenerator.DELETE_BTN_PRESENTED,
            ProjectRolePermissionCollections.PAGES);

    MButton exportPdfBtn = new MButton("").withIcon(VaadinIcons.FILE_O).withStyleName(WebThemes
            .BUTTON_OPTION).withDescription(UserUIContext.getMessage(GenericI18Enum.BUTTON_EXPORT_PDF));

    OnDemandFileDownloader fileDownloader = new OnDemandFileDownloader(new LazyStreamSource() {
        @Override
        protected StreamResource.StreamSource buildStreamSource() {
            return new PageReportStreamSource(beanItem);
        }

        @Override
        public String getFilename() {
            return "Document.pdf";
        }
    });
    fileDownloader.extend(exportPdfBtn);

    pagesPreviewForm.insertToControlBlock(exportPdfBtn);

    pageVersionsSelection = new PageVersionSelectionBox();
    pagesPreviewForm.insertToControlBlock(pageVersionsSelection);
    return buttonControls;
}
Example 5
Source File: ByteArrayImageResource.java    From mycollab with GNU Affero General Public License v3.0 5 votes vote down vote up 
public ByteArrayImageResource(final byte[] imageData, String mimeType) {
    super(new StreamResource.StreamSource() {
        private static final long serialVersionUID = 1L;

        public InputStream getStream() {
            return new ByteArrayInputStream(imageData);
        }
    }, "avatar");

    this.setMIMEType(mimeType);
}
Example 6
Source File: PolicyEditor.java    From XACML with MIT License 5 votes vote down vote up 
protected void initializeButtons() {
	//
	// The Save button
	//
	this.buttonSave.addClickListener(new ClickListener() {
		private static final long serialVersionUID = 1L;

		@Override
		public void buttonClick(ClickEvent event) {
			self.savePolicy();
		}
	});
	//
	// Attach a window opener to the View XML button
	//
	BrowserWindowOpener opener = new BrowserWindowOpener(new StreamResource(new StreamResource.StreamSource() {
		private static final long serialVersionUID = 1L;

		@Override
		public InputStream getStream() {
			try {
				if (logger.isDebugEnabled()) {
					logger.debug("Setting view xml button to: " + self.file.getAbsolutePath());
				}
				return new FileInputStream(self.file);
			} catch (Exception e) {
				logger.error("Failed to open input stream " + self.file);
			}
			return null;
		}
	}, self.file.getName()));
	opener.setWindowName("_new");
	opener.extend(this.buttonViewXML);
}