private void initUI() { GridLayout mainLayout = new GridLayout(1, 5); mainLayout.setWidth("100%"); mainLayout.setMargin(true); mainLayout.setSpacing(true); CssLayout inputPanel = new CssLayout(); inputPanel.setWidth("100%"); inputPanel.setStyleName("mail-panel"); inputLayout = new GridLayout(3, 4); inputLayout.setSpacing(true); inputLayout.setWidth("100%"); inputLayout.setColumnExpandRatio(0, 1.0f); inputPanel.addComponent(inputLayout); mainLayout.addComponent(inputPanel); tokenFieldMailTo = new EmailTokenField(); inputLayout.addComponent(createTextFieldMail("To:", tokenFieldMailTo), 0, 0); if (lstMail != null) { for (String mail : lstMail) { if (StringUtils.isNotBlank(mail)) { if (mail.indexOf("<") > -1) { String strMail = mail.substring(mail.indexOf("<") + 1, mail.lastIndexOf(">")); if (strMail != null && !strMail.equalsIgnoreCase("null")) {} } else { } } } } final TextField subject = new TextField(); subject.setRequired(true); subject.setWidth("100%"); subjectField = createTextFieldMail("Subject:", subject); inputLayout.addComponent(subjectField, 0, 1); initButtonLinkCcBcc(); ccField = createTextFieldMail("Cc:", tokenFieldMailCc); bccField = createTextFieldMail("Bcc:", tokenFieldMailBcc); final RichTextArea noteArea = new RichTextArea(); noteArea.setWidth("100%"); noteArea.setHeight("200px"); mainLayout.addComponent(noteArea, 0, 1); mainLayout.setComponentAlignment(noteArea, Alignment.MIDDLE_CENTER); HorizontalLayout controlsLayout = new HorizontalLayout(); controlsLayout.setWidth("100%"); final AttachmentPanel attachments = new AttachmentPanel(); attachments.setWidth("500px"); MultiFileUploadExt uploadExt = new MultiFileUploadExt(attachments); uploadExt.addComponent(attachments); controlsLayout.addComponent(uploadExt); controlsLayout.setExpandRatio(uploadExt, 1.0f); controlsLayout.setSpacing(true); Button cancelBtn = new Button( AppContext.getMessage(GenericI18Enum.BUTTON_CANCEL), new Button.ClickListener() { private static final long serialVersionUID = 1L; @Override public void buttonClick(ClickEvent event) { MailFormWindow.this.close(); } }); cancelBtn.setStyleName(UIConstants.THEME_GRAY_LINK); controlsLayout.addComponent(cancelBtn); controlsLayout.setComponentAlignment(cancelBtn, Alignment.MIDDLE_RIGHT); Button sendBtn = new Button( "Send", new Button.ClickListener() { private static final long serialVersionUID = 1L; @Override public void buttonClick(ClickEvent event) { if (tokenFieldMailTo.getListRecipient().size() <= 0 || subject.getValue().equals("")) { NotificationUtil.showErrorNotification( "To Email field and Subject field must be not empty! Please fulfil them before sending email."); return; } if (AppContext.getUser().getEmail() != null && AppContext.getUser().getEmail().length() > 0) { ExtMailService systemMailService = ApplicationContextUtil.getSpringBean(ExtMailService.class); List<File> listFile = attachments.files(); List<EmailAttachementSource> emailAttachmentSource = null; if (listFile != null && listFile.size() > 0) { emailAttachmentSource = new ArrayList<>(); for (File file : listFile) { emailAttachmentSource.add(new FileEmailAttachmentSource(file)); } } systemMailService.sendHTMLMail( AppContext.getUser().getEmail(), AppContext.getUser().getDisplayName(), tokenFieldMailTo.getListRecipient(), tokenFieldMailCc.getListRecipient(), tokenFieldMailBcc.getListRecipient(), subject.getValue().toString(), noteArea.getValue().toString(), emailAttachmentSource); MailFormWindow.this.close(); } else { NotificationUtil.showErrorNotification( "Your email is empty value, please fulfil it before sending email!"); } } }); sendBtn.setIcon(FontAwesome.SEND); sendBtn.setStyleName(UIConstants.BUTTON_ACTION); controlsLayout.addComponent(sendBtn); controlsLayout.setComponentAlignment(sendBtn, Alignment.MIDDLE_RIGHT); mainLayout.addComponent(controlsLayout, 0, 2); this.setContent(mainLayout); }