Examples with WicketTag org.apache.wicket.markup.WicketTag used on opensource projects

Example 6 with WicketTag

use of org.apache.wicket.markup.WicketTag in project wicket by apache.

the class WicketTagIdentifier method onComponentTag.

/**
 * Get the next tag from the next MarkupFilter in the chain and search for Wicket specific tags.
 * <p>
 * Note: The xml parser - the next MarkupFilter in the chain - returns XmlTags which are a
 * subclass of MarkupElement. The implementation of this filter will return either ComponentTag
 * or WicketTag. Both are subclasses of MarkupElement and both maintain a
 * reference to the XmlTag. But no XmlTag is returned.
 *
 * @see org.apache.wicket.markup.parser.IMarkupFilter#nextElement()
 * @return The next tag from markup to be processed. If {@code null} then no more tags are available
 */
@Override
protected MarkupElement onComponentTag(ComponentTag tag) throws ParseException {
    final String namespace = getWicketNamespace();
    // If the form <tag wicket:id = "value"> is used
    final String wicketIdValue = tag.getAttributes().getString(namespace + ":id");
    // Identify tags with Wicket namespace
    if (namespace.equalsIgnoreCase(tag.getNamespace())) {
        // It is <wicket:...>
        tag = new WicketTag(tag.getXmlTag());
        if (Strings.isEmpty(wicketIdValue)) {
            // Make it a Wicket component.
            tag.setId(namespace + "_" + tag.getName() + getRequestUniqueId());
            tag.setUserData(CONTAINER_INFO, getMarkupResourceStream().getContainerInfo());
            tag.setUserData(MARKUP_CACHE_KEY, getMarkupResourceStream().getCacheKey());
            tag.setModified(true);
            if (isRaw(tag)) {
                tag.setFlag(ComponentTag.RENDER_RAW, true);
            } else if (tag.isClose() == false) {
                tag.setAutoComponentTag(true);
            }
        }
        // If the tag is not a well-known wicket namespace tag
        if (!isWellKnown(tag)) {
            // give up
            throw new WicketParseException("Unknown tag name with Wicket namespace: '" + tag.getName() + "'. Might be you haven't installed the appropriate resolver?", tag);
        }
    }
    if (wicketIdValue != null) {
        if (wicketIdValue.trim().length() == 0) {
            throw new WicketParseException("The wicket:id attribute value must not be empty. May be unmatched quotes?!?", tag);
        }
        // Make it a wicket component. Otherwise it would be RawMarkup
        tag.setId(wicketIdValue);
    }
    return tag;
}

Example 7 with WicketTag

use of org.apache.wicket.markup.WicketTag in project wicket by apache.

the class Component method renderComponentTag.

/**
 * Writes a simple tag out to the response stream. Any components that might be referenced by
 * the tag are ignored. Also undertakes any tag attribute modifications if they have been added
 * to the component.
 *
 * @param tag
 *            The tag to write
 */
protected final void renderComponentTag(ComponentTag tag) {
    if (needToRenderTag(tag)) {
        // apply behaviors that are attached to the component tag.
        if (tag.hasBehaviors()) {
            Iterator<? extends Behavior> tagBehaviors = tag.getBehaviors();
            while (tagBehaviors.hasNext()) {
                final Behavior behavior = tagBehaviors.next();
                if (behavior.isEnabled(this)) {
                    behavior.onComponentTag(this, tag);
                }
                behavior.detach(this);
            }
        }
        // Apply behavior modifiers
        List<? extends Behavior> behaviors = getBehaviors();
        if ((behaviors != null) && !behaviors.isEmpty() && !tag.isClose() && (isIgnoreAttributeModifier() == false)) {
            tag = tag.mutable();
            for (Behavior behavior : behaviors) {
                // Components may reject some behavior components
                if (isBehaviorAccepted(behavior)) {
                    behavior.onComponentTag(this, tag);
                }
            }
        }
        if ((tag instanceof WicketTag) && !tag.isClose() && !getFlag(FLAG_IGNORE_ATTRIBUTE_MODIFIER)) {
            ExceptionSettings.NotRenderableErrorStrategy notRenderableErrorStrategy = ExceptionSettings.NotRenderableErrorStrategy.LOG_WARNING;
            if (Application.exists()) {
                notRenderableErrorStrategy = getApplication().getExceptionSettings().getNotRenderableErrorStrategy();
            }
            String tagName = tag.getNamespace() + ":" + tag.getName();
            String componentId = getId();
            if (getFlag(FLAG_OUTPUT_MARKUP_ID)) {
                String message = String.format("Markup id set on a component that is usually not rendered into markup. " + "Markup id: %s, component id: %s, component tag: %s.", getMarkupId(), componentId, tagName);
                if (notRenderableErrorStrategy == ExceptionSettings.NotRenderableErrorStrategy.THROW_EXCEPTION) {
                    throw new IllegalStateException(message);
                }
                log.warn(message);
            }
            if (getFlag(FLAG_PLACEHOLDER)) {
                String message = String.format("Placeholder tag set on a component that is usually not rendered into markup. " + "Component id: %s, component tag: %s.", componentId, tagName);
                if (notRenderableErrorStrategy == ExceptionSettings.NotRenderableErrorStrategy.THROW_EXCEPTION) {
                    throw new IllegalStateException(message);
                }
                log.warn(message);
            }
        }
        // Write the tag
        tag.writeOutput(getResponse(), !needToRenderTag(null), getMarkup().getMarkupResourceStream().getWicketNamespace());
    }
}

Example 8 with WicketTag

use of org.apache.wicket.markup.WicketTag in project wicket by apache.

the class BorderBehavior method beforeRender.

@Override
public void beforeRender(final Component component) {
    final MarkupStream stream = getMarkupStream(component);
    final Response response = component.getResponse();
    stream.setCurrentIndex(0);
    boolean insideBorderMarkup = false;
    while (stream.isCurrentIndexInsideTheStream()) {
        MarkupElement elem = stream.get();
        stream.next();
        if (elem instanceof WicketTag) {
            WicketTag wTag = (WicketTag) elem;
            if (!insideBorderMarkup) {
                if (wTag.isBorderTag() && wTag.isOpen()) {
                    insideBorderMarkup = true;
                    continue;
                } else {
                    throw new WicketRuntimeException("Unexpected tag encountered in markup of component border " + getClass().getName() + ". Tag: " + wTag.toString() + ", expected tag: <wicket:border>");
                }
            } else {
                if (wTag.isBodyTag()) {
                    break;
                } else {
                    throw new WicketRuntimeException("Unexpected tag encountered in markup of component border " + getClass().getName() + ". Tag: " + wTag.toString() + ", expected tag: <wicket:body> or </wicket:body>");
                }
            }
        }
        if (insideBorderMarkup) {
            response.write(elem.toCharSequence());
        }
    }
    if (!stream.isCurrentIndexInsideTheStream()) {
        throw new WicketRuntimeException("Markup for component border " + getClass().getName() + " ended prematurely, was expecting </wicket:border>");
    }
}

Example 9 with WicketTag

use of org.apache.wicket.markup.WicketTag in project wicket by apache.

the class AutoLabelTextResolver method resolve.

@Override
public Component resolve(MarkupContainer container, MarkupStream markupStream, ComponentTag tag) {
    if (tag instanceof WicketTag && "label".equals(tag.getName())) {
        // We need to find a FormComponent...
        Component related = null;
        // ...which could be explicitly specified...
        String forAttributeValue = tag.getAttribute("for");
        if (forAttributeValue != null) {
            Component component = AutoLabelResolver.findRelatedComponent(container, forAttributeValue);
            related = component;
        }
        if (related == null) {
            // ...or available through an AutoLabel, either directly above us...
            if (container instanceof AutoLabel) {
                related = ((AutoLabel) container).getRelatedComponent();
            }
            if (related == null) {
                // ...or perhaps further up...
                AutoLabel autoLabel = container.findParent(AutoLabel.class);
                if (autoLabel != null) {
                    related = autoLabel.getRelatedComponent();
                }
            }
        }
        if (related == null) {
            // ...or it might just not be available.
            String forAttr = forAttributeValue != null ? " for=\"" + forAttributeValue + "\"" : "";
            throw new ComponentNotFoundException("no related component found for <wicket:label" + forAttr + ">");
        } else {
            // ...found the form component, so we can return our label.
            return new TextLabel(tag.getId(), related);
        }
    }
    return null;
}

Example 10 with WicketTag

use of org.apache.wicket.markup.WicketTag in project wicket by apache.

the class WicketMessageResolver method resolve.

@Override
public Component resolve(final MarkupContainer container, final MarkupStream markupStream, final ComponentTag tag) {
    if (tag instanceof WicketTag) {
        WicketTag wtag = (WicketTag) tag;
        if (wtag.isMessageTag()) {
            IValueMap attributes = wtag.getAttributes();
            String messageKey = attributes.getString(KEY_ATTRIBUTE);
            if (Strings.isEmpty(messageKey)) {
                throw new MarkupException("Wrong format of <wicket:message key='xxx'>: attribute 'key' is missing");
            }
            boolean escape = attributes.getBoolean(ESCAPE_ATTRIBUTE);
            final String id = wtag.getId();
            MessageContainer label = new MessageContainer(id, messageKey, escape);
            label.setRenderBodyOnly(container.getApplication().getMarkupSettings().getStripWicketTags());
            return label;
        }
    }
    // We were not able to handle the tag
    return null;
}