protected void onInitialize()

in openmeetings-web/src/main/java/org/apache/openmeetings/web/admin/backup/BackupPanel.java [142:222]
71 lines of code
3 McCabe index (conditional complexity)

		protected void onInitialize() {
			add(new CheckBox("includeFilesInBackup", includeFilesInBackup).setOutputMarkupId(true));

			// Add a component to download a file without page refresh
			final AjaxDownloadBehavior downloader = new AjaxDownloadBehavior(new IResource() {
				private static final long serialVersionUID = 1L;

				@Override
				public void respond(Attributes attributes) {
					new FileSystemResource(backupFile.toPath()) {
						private static final long serialVersionUID = 1L;

						@Override
						protected ResourceResponse createResourceResponse(Attributes attr, Path path) {
							ResourceResponse response = super.createResourceResponse(attr, path);
							response.setCacheDuration(ZERO);
							return response;
						}
					}.respond(attributes);
				}
			});
			download = new BootstrapAjaxButton("download", new ResourceModel("admin.backup.lbl"), this, Buttons.Type.Outline_Primary) {
				private static final long serialVersionUID = 1L;

				@Override
				protected void onSubmit(AjaxRequestTarget target) {
					String dateString = "backup_" + CalendarPatterns.getTimeForStreamId(new Date());
					backupFile = new File(OmFileHelper.getUploadBackupDir(), dateString + ".zip");
					startWithProgress(() -> {
						try {
							backupExport.performExport(backupFile, includeFilesInBackup.getObject(), progress);
						} catch (Exception e) {
							log.error("Exception on panel backup download ", e);
							th = e;
						}
					}, dateString, target);
				}

				@Override
				protected void onError(AjaxRequestTarget target) {
					// repaint the feedback panel so errors are shown
					target.add(feedback);
				}
			};
			download.setIconType(FontAwesome6IconType.file_arrow_down_s);
			progressBar = new UpdatableProgressBar("progress", new Model<>(0), BackgroundColorBehavior.Color.Info, true) {
				private static final long serialVersionUID = 1L;

				@Override
				protected IModel<Integer> newValue() {
					return Model.of(progress.get());
				}

				@Override
				protected void onPostProcessTarget(IPartialPageRequestHandler target) {
					if (th != null) {
						stop(target);
						feedback.error(th.getMessage());
						onComplete(target);
					}
					super.onPostProcessTarget(target);
				}

				@Override
				protected void onComplete(IPartialPageRequestHandler target) {
					progressBar.setVisible(false);
					target.add(feedback);
					updateButtons(target, true);
					downloader.initiate(target);
					super.onComplete(target);
				}
			};
			progressBar.updateInterval(Duration.ofSeconds(1)).stop(null).striped(false).setVisible(false).setOutputMarkupPlaceholderTag(true);
			add(downloader);
			add(progressBar
					, download
					, new Label("backupSteps", new ResourceModel("admin.backup.steps"))
						.setEscapeModelStrings(false)
						.setRenderBodyOnly(true));
			super.onInitialize();
		}