Java Code Examples for javax.faces.component.UIViewRoot#findComponent()

/**
 * Ids of fields inside tables look like <code>tableId:rowNr:fieldId</code>.
 * So we try to cut the fieldId and the rowNr parts to get the table id and
 * then check if it is inside a section and return the section id.
 * 
 * @param clientId
 *            the id of the field inside of a table
 * @param root
 *            the {@link UIViewRoot}
 * @return the section id or <code>null</code>
 */
private String getTableSectionId(String clientId, UIViewRoot root) {
    if (!clientId.contains(":")) {
        return null;
    }
    // cut the field id
    clientId = clientId.substring(0, clientId.lastIndexOf(':'));
    if (!clientId.contains(":")) {
        return null;
    }
    // cut the row number - we should have the table id
    clientId = clientId.substring(0, clientId.lastIndexOf(':'));
    UIComponent comp = root.findComponent(clientId);
    if (comp != null) {
        return getSectionId(comp);
    }
    return null;
}
 

public void beforePhase(PhaseEvent event) {
    FacesContext fc = event.getFacesContext();
    ServletRequest request = (ServletRequest) fc.getExternalContext()
            .getRequest();
    UIViewRoot root = fc.getViewRoot();
    resetColor(root.getChildren());
    List<String> additionalErrorElements = new ArrayList<String>();
    Set<String> sectionsToExpand = new HashSet<String>();
    Iterator<String> clientIds = fc.getClientIdsWithMessages();
    while (clientIds.hasNext()) {
        String clientId = clientIds.next();
        if (canIgnoreClientId(clientId)) {
            // skip, since it is not associated with a specific field
            continue;
        }
        if (request.getAttribute(ATTRIBUTE_FIRST_ERROR_ELEMENT) == null) {
            // set focus to first component only
            request.setAttribute(ATTRIBUTE_FIRST_ERROR_ELEMENT, clientId);
        }
        UIComponent uiComponent = root.findComponent(clientId);
        String sectionId = null;
        if (uiComponent != null) {
            sectionId = getSectionId(uiComponent);
            uiComponent.getAttributes().put(ATTRIBUTE_STYLE, STYLE_ERROR);
            Object object = uiComponent.getAttributes().get("connectedTo");
            if (object != null) {
                UIComponent connected = root.findComponent(object
                        .toString());
                if (connected != null) {
                    connected.getAttributes().put(ATTRIBUTE_STYLE,
                            STYLE_ERROR);
                }
            }
            if (uiComponent instanceof UISelectBoolean) {
                uiComponent.getAttributes().put(ATTRIBUTE_STYLE,
                        STYLE_CHECKBOX_ERROR);
            } else if (uiComponent instanceof UICalendar) {
                additionalErrorElements.add(clientId + "InputDate");
            } else {
                uiComponent.getAttributes().put(ATTRIBUTE_STYLE,
                        STYLE_ERROR);
            }
        } else {
            sectionId = getTableSectionId(clientId, root);
            // if the element is part of a data table we must change the
            // style from javascript
            additionalErrorElements.add(clientId);
        }
        if (sectionId != null) {
            sectionsToExpand.add(sectionId);
        }
    }
    request.setAttribute(ATTRIBUTE_ADDITIONAL_ERROR_ELEMENTS,
            additionalErrorElements);
    if (!sectionsToExpand.isEmpty()) {
        request.setAttribute(OpenStateBean.SECTIONS_TO_EXPAND,
                sectionsToExpand);
    }
    if (request.getAttribute(ATTRIBUTE_FIRST_ERROR_ELEMENT) != null) {
        JSFUtils.addMessage(null, FacesMessage.SEVERITY_ERROR,
                BaseBean.ERROR_TEXT_FIELDS, null);
    }

    if (request.getAttribute(FILEUPLOAD_EXCEPTION) != null) {
        // The upload of one or a bunch of files failed because either one
        // of the files exceeds the value of "uploadMaxFileSize" or the size
        // of all files exceeds the value of "uploadMaxSize". If
        // "uploadMaxSize" if not set => uploadMaxSize = uploadMaxFileSize

        Integer maxSize = (Integer) request
                .getAttribute(FILEUPLOAD_MAX_SIZE);

        if (maxSize == null) {
            // The attribute indicating the maximum allowed size was not set
            JSFUtils.addMessage(null, FacesMessage.SEVERITY_ERROR,
                    BaseBean.ERROR_UPLOAD_SIZE_LIMIT_EXCEEDED, null);
        } else {
            // Calculate a more handy megabyte value and bring it to a nice
            // format
            Locale viewLocale = JSFUtils.getViewLocale();
            DecimalFormat df = (DecimalFormat) DecimalFormat
                    .getInstance(viewLocale);
            df.applyPattern("#0.00");

            double maxValueMb = maxSize.intValue() / (1024.0 * 1024.0);

            JSFUtils.addMessage(null, FacesMessage.SEVERITY_ERROR,
                    BaseBean.ERROR_UPLOAD_SIZE_LIMIT_EXCEEDED_KNOWNMAX,
                    new Object[] { df.format(maxValueMb) });
        }
    }
}