Examples with ValueHolderAttachedObjectTarget jakarta.faces.view.ValueHolderAttachedObjectTarget used on opensource projects

Example 1 with ValueHolderAttachedObjectTarget

use of jakarta.faces.view.ValueHolderAttachedObjectTarget in project myfaces by apache.

the class FaceletViewDeclarationLanguage method retargetAttachedObjects.

/**
 * In short words, this method take care of "target" an "attached object".
 * <ul>
 * <li>The "attached object" is instantiated by a tag handler.</li>
 * <li>The "target" is an object used as "marker", that exposes a List&lt;UIComponent&gt;</li>
 * </ul>
 * This method should be called from some composite component tag handler, after
 * all children of composite component has been applied.
 */
@Override
@SuppressWarnings("unchecked")
public void retargetAttachedObjects(FacesContext context, UIComponent topLevelComponent, List<AttachedObjectHandler> handlerList) {
    Assert.notNull(context, "context");
    Assert.notNull(topLevelComponent, "topLevelComponent");
    Assert.notNull(handlerList, "handlerList");
    BeanInfo compositeComponentMetadata = (BeanInfo) topLevelComponent.getAttributes().get(UIComponent.BEANINFO_KEY);
    if (compositeComponentMetadata == null) {
        log.severe("Composite component metadata not found for: " + topLevelComponent.getClientId(context));
        return;
    }
    BeanDescriptor compositeComponentDescriptor = compositeComponentMetadata.getBeanDescriptor();
    List<AttachedObjectTarget> targetList = (List<AttachedObjectTarget>) compositeComponentDescriptor.getValue(AttachedObjectTarget.ATTACHED_OBJECT_TARGETS_KEY);
    if (targetList == null || targetList.isEmpty()) {
        return;
    }
    for (int i = 0, size = handlerList.size(); i < size; i++) {
        AttachedObjectHandler currentHandler = handlerList.get(i);
        // In the spec javadoc this variable is referred as forAttributeValue, but
        // note it is also called curTargetName
        String forValue = currentHandler.getFor();
        // and ClientBehaviorHandler.apply
        for (int k = 0, targetsSize = targetList.size(); k < targetsSize; k++) {
            AttachedObjectTarget currentTarget = targetList.get(k);
            FaceletCompositionContext mctx = FaceletCompositionContext.getCurrentInstance();
            if ((forValue != null && forValue.equals(currentTarget.getName())) && ((currentTarget instanceof ActionSource2AttachedObjectTarget && currentHandler instanceof ActionSource2AttachedObjectHandler) || (currentTarget instanceof EditableValueHolderAttachedObjectTarget && currentHandler instanceof EditableValueHolderAttachedObjectHandler) || (currentTarget instanceof ValueHolderAttachedObjectTarget && currentHandler instanceof ValueHolderAttachedObjectHandler))) {
                // perf: getTargets return ArrayList - see getTargets implementations
                List<UIComponent> targets = currentTarget.getTargets(topLevelComponent);
                for (int l = 0, targetsCount = targets.size(); l < targetsCount; l++) {
                    UIComponent component = targets.get(l);
                    // its tag handler is applied.
                    if (UIComponent.isCompositeComponent(component)) {
                        // How we obtain the list of AttachedObjectHandler for
                        // the current composite component? It should be a component
                        // attribute or retrieved by a key inside component.getAttributes
                        // map. Since api does not specify any attribute, we suppose
                        // this is an implementation detail and it should be retrieved
                        // from component attribute map.
                        // But this is only the point of the iceberg, because we should
                        // define how we register attached object handlers in this list.
                        // ANS: see CompositeComponentResourceTagHandler.
                        // The current handler should be added to the list, to be chained.
                        // Note that the inner component should have a target with the same name
                        // as "for" attribute
                        mctx.addAttachedObjectHandler(component, currentHandler);
                        List<AttachedObjectHandler> handlers = mctx.getAttachedObjectHandlers(component);
                        retargetAttachedObjects(context, component, handlers);
                        handlers.remove(currentHandler);
                    } else {
                        currentHandler.applyAttachedObject(context, component);
                    }
                    if (mctx.isUsingPSSOnThisView() && mctx.isMarkInitialState()) {
                        component.markInitialState();
                    }
                }
            } else if ((currentTarget instanceof BehaviorHolderAttachedObjectTarget && currentHandler instanceof BehaviorHolderAttachedObjectHandler)) {
                String eventName = ((BehaviorHolderAttachedObjectHandler) currentHandler).getEventName();
                boolean isDefaultEvent = ((BehaviorHolderAttachedObjectTarget) currentTarget).isDefaultEvent();
                if ((eventName != null && eventName.equals(currentTarget.getName())) || (eventName == null && isDefaultEvent)) {
                    List<UIComponent> targets = currentTarget.getTargets(topLevelComponent);
                    for (int j = 0, targetssize = targets.size(); j < targetssize; j++) {
                        UIComponent component = targets.get(j);
                        // its tag handler is applied.
                        if (UIComponent.isCompositeComponent(component)) {
                            if (currentTarget instanceof ClientBehaviorAttachedObjectTarget) {
                                mctx.addAttachedObjectHandler(component, new ClientBehaviorRedirectBehaviorAttachedObjectHandlerWrapper((BehaviorHolderAttachedObjectHandler) currentHandler, ((ClientBehaviorAttachedObjectTarget) currentTarget).getEvent()));
                            } else {
                                mctx.addAttachedObjectHandler(component, currentHandler);
                            }
                            List<AttachedObjectHandler> handlers = mctx.getAttachedObjectHandlers(component);
                            retargetAttachedObjects(context, component, handlers);
                            handlers.remove(currentHandler);
                        } else {
                            if (currentHandler instanceof ClientBehaviorRedirectBehaviorAttachedObjectHandlerWrapper) {
                                ClientBehaviorRedirectBehaviorAttachedObjectHandlerWrapper wrapper = (ClientBehaviorRedirectBehaviorAttachedObjectHandlerWrapper) currentHandler;
                                currentHandler.applyAttachedObject(context, new ClientBehaviorRedirectEventComponentWrapper(topLevelComponent, component, wrapper.getWrappedEventName(), eventName));
                            } else {
                                currentHandler.applyAttachedObject(context, component);
                            }
                        }
                        if (mctx.isUsingPSSOnThisView() && mctx.isMarkInitialState()) {
                            component.markInitialState();
                        }
                    }
                }
            }
        }
    }
}

Example 2 with ValueHolderAttachedObjectTarget

use of jakarta.faces.view.ValueHolderAttachedObjectTarget in project mojarra by eclipse-ee4j.

the class FaceletViewHandlingStrategy method retargetAttachedObjects.

/**
 * @see ViewHandlingStrategy#retargetAttachedObjects(jakarta.faces.context.FacesContext,
 * jakarta.faces.component.UIComponent, java.util.List)
 */
@SuppressWarnings({ "unchecked" })
@Override
public void retargetAttachedObjects(FacesContext context, UIComponent topLevelComponent, List<AttachedObjectHandler> handlers) {
    notNull("context", context);
    notNull("topLevelComponent", topLevelComponent);
    notNull("handlers", handlers);
    if (handlers == null || handlers.isEmpty()) {
        return;
    }
    BeanInfo componentBeanInfo = (BeanInfo) topLevelComponent.getAttributes().get(BEANINFO_KEY);
    if (componentBeanInfo == null) {
        return;
    }
    BeanDescriptor componentDescriptor = componentBeanInfo.getBeanDescriptor();
    // There is an entry in targetList for each attached object in the
    // <composite:interface> section of the composite component.
    List<AttachedObjectTarget> targetList = (List<AttachedObjectTarget>) componentDescriptor.getValue(ATTACHED_OBJECT_TARGETS_KEY);
    // Each entry in targetList will vend one or more UIComponent instances
    // that is to serve as the target of an attached object in the consuming
    // page.
    List<UIComponent> targetComponents;
    String forAttributeValue, curTargetName;
    // For each of the attached object handlers...
    for (AttachedObjectHandler curHandler : handlers) {
        // Get the name given to this attached object by the page author
        // in the consuming page.
        forAttributeValue = curHandler.getFor();
        // of this composite component...
        for (AttachedObjectTarget curTarget : targetList) {
            // Get the name given to this attached object target by the
            // composite component author
            curTargetName = curTarget.getName();
            targetComponents = curTarget.getTargets(topLevelComponent);
            if (curHandler instanceof ActionSource2AttachedObjectHandler && curTarget instanceof ActionSource2AttachedObjectTarget) {
                if (forAttributeValue.equals(curTargetName)) {
                    for (UIComponent curTargetComponent : targetComponents) {
                        retargetHandler(context, curHandler, curTargetComponent);
                    }
                    break;
                }
            } else if (curHandler instanceof EditableValueHolderAttachedObjectHandler && curTarget instanceof EditableValueHolderAttachedObjectTarget) {
                if (forAttributeValue.equals(curTargetName)) {
                    for (UIComponent curTargetComponent : targetComponents) {
                        retargetHandler(context, curHandler, curTargetComponent);
                    }
                    break;
                }
            } else if (curHandler instanceof ValueHolderAttachedObjectHandler && curTarget instanceof ValueHolderAttachedObjectTarget) {
                if (forAttributeValue.equals(curTargetName)) {
                    for (UIComponent curTargetComponent : targetComponents) {
                        retargetHandler(context, curHandler, curTargetComponent);
                    }
                    break;
                }
            } else if (curHandler instanceof BehaviorHolderAttachedObjectHandler && curTarget instanceof BehaviorHolderAttachedObjectTarget) {
                BehaviorHolderAttachedObjectHandler behaviorHandler = (BehaviorHolderAttachedObjectHandler) curHandler;
                BehaviorHolderAttachedObjectTarget behaviorTarget = (BehaviorHolderAttachedObjectTarget) curTarget;
                String eventName = behaviorHandler.getEventName();
                if (null != eventName && eventName.equals(curTargetName) || null == eventName && behaviorTarget.isDefaultEvent()) {
                    for (UIComponent curTargetComponent : targetComponents) {
                        retargetHandler(context, curHandler, curTargetComponent);
                    }
                }
            }
        }
    }
}