Examples of com.vaadin.terminal.StreamResource

com.vaadin.terminal.StreamResource
StreamResource is a resource provided to the client directly by the application. The strean resource is fetched from URI that is most often in the context of the application or window. The resource is automatically registered to window in creation. @author IT Mill Ltd. @version 6.7.1 @since 3.0


    for (final ProcessDefinitionConfig definition : orderedByProcessDescr) {
      if (session.hasPermissionsForDefinitionConfig(definition)) {
        if(!logoResourceCache.containsKey(definition)){
          logoResourceCache.put(definition, definition.getProcessLogo() == null ? defaultLogoResource
              : new StreamResource(new StreamSource() {
                @Override
                public InputStream getStream() {
                  return new ByteArrayInputStream(definition.getProcessLogo());
                }
              }, definition.getBpmDefinitionKey() + "_logo.png", activityMainPane.getApplication())

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  private Resource getWidgetIcon(WidgetItem widgetItem) {
    try {
      final InputStream stream = widgetItem.getBundle().getIconStream(widgetItem.getIcon());


      if (stream != null)
        return new StreamResource(new StreamResource.StreamSource() {
          @Override
          public InputStream getStream() {
            return stream;
          }
        }, widgetItem.getIcon(), application);

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    I18NSource messages = I18NSource.ThreadUtil.getThreadI18nSource();
    final String path = messages.getMessage(pathKey);
    final InputStream stream = getClass().getClassLoader().getResourceAsStream(path);
    if (stream != null) {
      String[] pathParts = path.split("/");
      return new StreamResource(new StreamResource.StreamSource() {
        @Override
        public InputStream getStream() {
          return stream;
        }
      }, pathParts[pathParts.length - 1], application);

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                return ProcessListPane.this.getResource(path);
            }


            @Override
            public Resource getStreamResource(String path, final byte[] bytes) {
                Resource res = new StreamResource(new StreamResource.StreamSource() {
                    @Override
                    public InputStream getStream() {
                        return new ByteArrayInputStream(bytes);
                    }
                }, path, application);

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            }
        };


        // generate random file name to bypass web browser image cache
        String randomFileName = "process-logo-" + System.nanoTime() + ".png";
        StreamResource resource = new StreamResource(source, randomFileName, GenericEditorApplication.getCurrent());


        // show the logo
        logoImage = new Embedded();
        logoImage.setType(Embedded.TYPE_IMAGE);
        logoImage.setSource(resource);

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        hl.setSpacing(true);
        Label label = new Label(name);
        label.setWidth("100%");
        hl.addComponent(label);
        hl.setExpandRatio(label, 1.0f);
        final StreamResource resource = new StreamResource(new StreamResource.StreamSource() {
          @Override
          public InputStream getStream() {
            ContentStream cs = doc.getContentStream();
            return cs.getStream();
          }

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                        @Override
                        public InputStream getStream() {
                            return new ByteArrayInputStream(instanceAttachment.getData());
                        }
                    };
                    StreamResource resource = new StreamResource(source, instanceAttachment.getFileName(), getApplication());
                    resource.setMIMEType(instanceAttachment.getMimeType());
                    getApplication().getMainWindow().open(resource, "_new");
                }
            }
        });
        downloadFile.addStyleName("default");

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  protected void loadPicture() {
    Component pictureComponent = null;
    final Picture userPicture = identityService.getUserPicture(user.getId());
    if (userPicture != null) {
      StreamResource imageresource = new StreamResource(new StreamSource() {
        private static final long serialVersionUID = 1L;
        public InputStream getStream() {
          return userPicture.getInputStream();
        }
      }, user.getId() + "." + Constants.MIMETYPE_EXTENSION_MAPPING.get(userPicture.getMimeType()), ExplorerApp.get());

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    protected void addUserPicture() {
      Resource pictureResource = Images.USER_32; // default icon
      if (user != null) {
        final Picture userPicture = identityService.getUserPicture(user.getId());
        if (userPicture != null) {
          pictureResource = new StreamResource(new StreamSource() {        
            public InputStream getStream() {
              return userPicture.getInputStream();
            }
          }, user.getId(), ExplorerApp.get());

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  protected void addTaskEventPicture(final org.activiti.engine.task.Event taskEvent, GridLayout eventGrid) {
    final Picture userPicture = identityService.getUserPicture(taskEvent.getUserId());
    Embedded authorPicture = null;
    
    if (userPicture != null) {
      StreamResource imageresource = new StreamResource(new StreamSource() {
        private static final long serialVersionUID = 1L;
        public InputStream getStream() {
          return userPicture.getInputStream();
        }
      }, "event_" + taskEvent.getUserId() + "." + Constants.MIMETYPE_EXTENSION_MAPPING.get(userPicture.getMimeType()), ExplorerApp.get());

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