Examples with WComponent com.github.bordertech.wcomponents.WComponent used on opensource projects

Example 1 with WComponent

use of com.github.bordertech.wcomponents.WComponent in project wcomponents by BorderTech.

the class AbstractContainerHelper method handleError.

/**
 * Last resort error handling.
 *
 * @param error the error to handle.
 * @throws IOException if there is an error writing the error HTML.
 */
public void handleError(final Throwable error) throws IOException {
    LOG.debug("Start handleError...");
    // Should the session be removed upon error?
    boolean terminate = ConfigurationProperties.getTerminateSessionOnError();
    // If we are unfriendly, terminate the session
    if (terminate) {
        invalidateSession();
    }
    // Are we in developer friendly error mode?
    boolean friendly = ConfigurationProperties.getDeveloperErrorHandling();
    FatalErrorPageFactory factory = Factory.newInstance(FatalErrorPageFactory.class);
    WComponent errorPage = factory.createErrorPage(friendly, error);
    String html = renderErrorPageToHTML(errorPage);
    // Setup the response
    Response response = getResponse();
    response.setContentType(WebUtilities.CONTENT_TYPE_HTML);
    // Make sure not cached
    getResponse().setHeader("Cache-Control", CacheType.NO_CACHE.getSettings());
    getResponse().setHeader("Pragma", "no-cache");
    getResponse().setHeader("Expires", "-1");
    getPrintWriter().println(html);
    LOG.debug("End handleError");
}

Example 2 with WComponent

use of com.github.bordertech.wcomponents.WComponent in project wcomponents by BorderTech.

the class AbstractContainerHelper method render.

/**
 * Support standard processing of the render phase of a request.
 *
 * @throws IOException IO Exception
 */
public void render() throws IOException {
    if (isDisposed()) {
        LOG.debug("Skipping render phase.");
        return;
    }
    try {
        // Check user context has been prepared
        if (getNewConversation() == null) {
            throw new IllegalStateException("User context has not been prepared before the render phase");
        }
        prepareRender();
        UIContext uic = getUIContext();
        if (uic == null) {
            throw new IllegalStateException("No user context set for the render phase.");
        }
        UIContextHolder.pushContext(uic);
        prepareRequest();
        // Handle errors from the action phase now.
        if (havePropogatedError()) {
            handleError(getPropogatedError());
            return;
        }
        WComponent uiComponent = getUI();
        if (uiComponent == null) {
            throw new SystemException("No UI Component exists.");
        }
        Environment environment = uiComponent.getEnvironment();
        if (environment == null) {
            throw new SystemException("No WEnvironment exists.");
        }
        getInterceptor().attachResponse(getResponse());
        getInterceptor().preparePaint(getRequest());
        String contentType = getUI().getHeaders().getContentType();
        Response response = getResponse();
        response.setContentType(contentType);
        addGenericHeaders(uic, getUI());
        PrintWriter writer = getPrintWriter();
        getInterceptor().paint(new WebXmlRenderContext(writer, uic.getLocale()));
        // The following only matters for a Portal context
        String title = uiComponent instanceof WApplication ? ((WApplication) uiComponent).getTitle() : null;
        if (title != null) {
            setTitle(title);
        }
    } catch (Escape esc) {
        LOG.debug("Escape performed during render phase.");
        handleEscape(esc);
    } catch (Throwable t) {
        // We try not to let any exception propagate to container.
        String message = "Caught exception during render phase.";
        LOG.error(message, t);
        handleError(t);
    } finally {
        UIContextHolder.reset();
        dispose();
    }
}

Example 3 with WComponent

use of com.github.bordertech.wcomponents.WComponent in project wcomponents by BorderTech.

the class VelocityRenderer method fillContext.

/**
 * Fills the given velocity context with data from the component which is being rendered. A map of components is
 * also built up, in order to support deferred rendering.
 *
 * @param component the current component being rendered.
 * @param context the velocity context to modify.
 * @param componentsByKey a map to store components for deferred rendering.
 */
private void fillContext(final WComponent component, final VelocityContext context, final Map<String, WComponent> componentsByKey) {
    // Also make the component available under the "this" key.
    context.put("this", component);
    // Make the UIContext available under the "uicontext" key.
    UIContext uic = UIContextHolder.getCurrent();
    context.put("uicontext", uic);
    context.put("uic", uic);
    if (component instanceof VelocityProperties) {
        Map<?, ?> map = ((VelocityProperties) component).getVelocityMap();
        for (Map.Entry<?, ?> entry : map.entrySet()) {
            String key = (String) entry.getKey();
            Object value = entry.getValue();
            context.put(key, value);
        }
    }
    if (LOG.isDebugEnabled()) {
        LOG.debug("Handling children");
    }
    // As well as going into their own named slots, visible children are also
    // placed into a list called children
    ArrayList<String> children = new ArrayList<>();
    if (component instanceof Container) {
        Container container = (Container) component;
        for (int i = 0; i < container.getChildCount(); i++) {
            WComponent child = container.getChildAt(i);
            String tag = child.getTag();
            if (tag != null || child.isVisible()) {
                // The key needs to be something which would never be output by a Velocity template.
                String key = "<VelocityLayout" + child.getId() + "/>";
                componentsByKey.put(key, child);
                if (tag != null) {
                    if (LOG.isDebugEnabled()) {
                        LOG.debug("Adding child " + tag + " to context");
                    }
                    addToContext(context, tag, key);
                }
                if (child.isVisible()) {
                    children.add(key);
                }
            }
        }
        context.put("children", children);
    }
    // Put the context in the context
    context.put("context", context);
}

Example 4 with WComponent

use of com.github.bordertech.wcomponents.WComponent in project wcomponents by BorderTech.

the class WCheckBoxRenderer method doRender.

/**
 * Paints the given WCheckBox.
 *
 * @param component the WCheckBox to paint.
 * @param renderContext the RenderContext to paint to.
 */
@Override
public void doRender(final WComponent component, final WebXmlRenderContext renderContext) {
    WCheckBox checkBox = (WCheckBox) component;
    XmlStringBuilder xml = renderContext.getWriter();
    boolean readOnly = checkBox.isReadOnly();
    xml.appendTagOpen(TAG_NAME);
    xml.appendAttribute("id", component.getId());
    xml.appendOptionalAttribute("class", component.getHtmlClass());
    xml.appendOptionalAttribute("track", component.isTracking(), "true");
    xml.appendOptionalAttribute("hidden", checkBox.isHidden(), "true");
    xml.appendOptionalAttribute("selected", checkBox.isSelected(), "true");
    if (readOnly) {
        xml.appendAttribute("readOnly", "true");
        xml.appendEnd();
        return;
    }
    WComponent submitControl = checkBox.getDefaultSubmitButton();
    String submitControlId = submitControl == null ? null : submitControl.getId();
    WComponentGroup<WCheckBox> group = checkBox.getGroup();
    String groupName = group == null ? null : group.getId();
    xml.appendOptionalAttribute("groupName", groupName);
    xml.appendOptionalAttribute("disabled", checkBox.isDisabled(), "true");
    xml.appendOptionalAttribute("required", checkBox.isMandatory(), "true");
    xml.appendOptionalAttribute("submitOnChange", checkBox.isSubmitOnChange(), "true");
    xml.appendOptionalAttribute("toolTip", checkBox.getToolTip());
    xml.appendOptionalAttribute("accessibleText", checkBox.getAccessibleText());
    xml.appendOptionalAttribute("buttonId", submitControlId);
    List<Diagnostic> diags = checkBox.getDiagnostics(Diagnostic.ERROR);
    if (diags == null || diags.isEmpty()) {
        xml.appendEnd();
        return;
    }
    xml.appendClose();
    DiagnosticRenderUtil.renderDiagnostics(checkBox, renderContext);
    xml.appendEndTag(TAG_NAME);
}

Example 5 with WComponent

use of com.github.bordertech.wcomponents.WComponent in project wcomponents by BorderTech.

the class WCollapsibleRenderer method doRender.

/**
 * Paints the given WCollapsible.
 *
 * @param component the WCollapsible to paint.
 * @param renderContext the RenderContext to paint to.
 */
@Override
public void doRender(final WComponent component, final WebXmlRenderContext renderContext) {
    WCollapsible collapsible = (WCollapsible) component;
    XmlStringBuilder xml = renderContext.getWriter();
    WComponent content = collapsible.getContent();
    boolean collapsed = collapsible.isCollapsed();
    xml.appendTagOpen("ui:collapsible");
    xml.appendAttribute("id", component.getId());
    xml.appendOptionalAttribute("class", component.getHtmlClass());
    xml.appendOptionalAttribute("track", component.isTracking(), "true");
    xml.appendAttribute("groupName", collapsible.getGroupName());
    xml.appendOptionalAttribute("collapsed", collapsed, "true");
    xml.appendOptionalAttribute("hidden", collapsible.isHidden(), "true");
    switch(collapsible.getMode()) {
        case CLIENT:
            xml.appendAttribute("mode", "client");
            break;
        case LAZY:
            xml.appendAttribute("mode", "lazy");
            break;
        case EAGER:
            xml.appendAttribute("mode", "eager");
            break;
        case DYNAMIC:
            xml.appendAttribute("mode", "dynamic");
            break;
        case SERVER:
            xml.appendAttribute("mode", "server");
            break;
        default:
            throw new SystemException("Unknown collapsible mode: " + collapsible.getMode());
    }
    HeadingLevel level = collapsible.getHeadingLevel();
    if (level != null) {
        xml.appendAttribute("level", level.getLevel());
    }
    xml.appendClose();
    // Render margin
    MarginRendererUtil.renderMargin(collapsible, renderContext);
    // Label
    collapsible.getDecoratedLabel().paint(renderContext);
    // Content
    xml.appendTagOpen("ui:content");
    xml.appendAttribute("id", component.getId() + "-content");
    xml.appendClose();
    // Render content if not EAGER Mode or is EAGER and is the current AJAX trigger
    if (CollapsibleMode.EAGER != collapsible.getMode() || AjaxHelper.isCurrentAjaxTrigger(collapsible)) {
        // Visibility of content set in prepare paint
        content.paint(renderContext);
    }
    xml.appendEndTag("ui:content");
    xml.appendEndTag("ui:collapsible");
}