Examples of javax.faces.component.UIComponent

javax.faces.component.UIComponent
sun.com/javaee/javaserverfaces/1.2/docs/api/index.html">J SF Specification @author Manfred Geiler (latest modification by $Author: struberg $) @version $Revision: 1188381 $ $Date: 2011-10-24 16:08:23 -0500 (Mon, 24 Oct 2011) $

    public static <T extends UIComponent> T getParent(UIComponent component, Class<T> parentClass) {
        if (component == null || parentClass == null) {
            return null;
        }


        UIComponent parent = component.getParent();
        while (parent != null) {
            if (parentClass.isInstance(parent)) {
                return (T) parent;
            }
            parent = parent.getParent();
        }
        return null;
    }

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        boolean isLastNode = (nodeIdx == parsedId.length - 1);


        Node node = parsedId[nodeIdx];


        Collection<String> directSubtreeIds;
        UIComponent childComponent;


        if (node.getFunction() == null) {
            directSubtreeIds = Collections.singleton(node.getImage());
            childComponent = component;
        } else {

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        if (null == notify.getStack()) {
            return null;
        }


        UIComponent stack = UTILS.findComponentFor(facesContext.getViewRoot(), notify.getStack());


        if (stack instanceof AbstractNotifyStack) {
            return stack.getClientId();
        } else {
            return null;
        }
    }

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    }


    public static void addFacetOrAttributeAsOption(String name, Map<String, Object> options, FacesContext facesContext,
            UIComponent component) {


        UIComponent facet = component.getFacet(name);
        if (facet != null && facet.isRendered()) {
            ResponseWriter originalResponseWriter = facesContext.getResponseWriter();
            try {
                ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
                PrintWriter printWriter = new PrintWriter(outputStream);
                ResponseWriter newResponseWriter = facesContext.getRenderKit().createResponseWriter(printWriter, null, null);
                facesContext.setResponseWriter(newResponseWriter);
                facet.encodeAll(facesContext);
                printWriter.flush();
                String value = new String(outputStream.toByteArray());
                options.put(name, value);
            } catch (IOException e) {
                throw new FacesException("Can't encode facet '" + name + "' of component '" + component.getClass().getName()

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                if (VisitResult.ACCEPT.equals(result)) {
                    Iterator<UIComponent> dataChildrenItr = dataChildren();


                    while (dataChildrenItr.hasNext()) {
                        UIComponent dataChild = dataChildrenItr.next();


                        if (!dataChild.getParent().isRendered() && visitContext.getHints().contains(VisitHint.SKIP_UNRENDERED)) {
                            // skip unrendered columns
                            continue;
                        }


                        if (dataChild.visitTree(visitContext, callback)) {
                            visitResult = true;


                            return DataVisitResult.STOP;
                        }
                    }

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            if (isRowAvailable()) {
                Iterator<UIComponent> childIterator = dataChildren();


                while (childIterator.hasNext()) {
                    UIComponent component = childIterator.next();


                    processComponent(context, component, argument);
                }
            }

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        try {
            Iterator<UIComponent> fixedChildren = fixedChildren();


            while (fixedChildren.hasNext()) {
                UIComponent component = fixedChildren.next();


                visitor.processComponent(faces, component, null);
            }


            walk(faces, visitor, null);

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                found = true;
            } else {
                Iterator<UIComponent> fixedChildrenItr = fixedChildren();


                while (fixedChildrenItr.hasNext() && !found) {
                    UIComponent fixedChild = fixedChildrenItr.next();


                    found = fixedChild.invokeOnComponent(context, clientId, callback);
                }
            }


            if (!found) {
                Object newRowKey = null;


                // Call for a child component - try to detect row key
                // baseId.length() + 1 expression skips SEPARATOR_CHAR
                // TODO - convertKeyString
                String rowKeyString = extractKeySegment(context, clientId.substring(baseId.length() + 1));


                if (rowKeyString != null) {
                    Converter keyConverter = getRowKeyConverter();


                    if (null != keyConverter) {
                        try {
                            // TODO: review
                            newRowKey = keyConverter.getAsObject(context, this, rowKeyString);
                        } catch (ConverterException e) {


                            // TODO: LOG error
                        }
                    }
                }


                setRowKey(context, newRowKey);


                if (isRowAvailable()) {
                    Iterator<UIComponent> dataChildrenItr = dataChildren();


                    while (dataChildrenItr.hasNext() && !found) {
                        UIComponent dataChild = dataChildrenItr.next();


                        found = dataChild.invokeOnComponent(context, clientId, callback);
                    }
                }
            }
        } catch (Exception e) {
            throw new FacesException(e);

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    }


    private boolean visitComponents(Iterator<UIComponent> components, VisitContext context, VisitCallback callback) {


        while (components.hasNext()) {
            UIComponent nextChild = components.next();


            if (nextChild.visitTree(context, callback)) {
                return true;
            }
        }


        return false;

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            viewRoot.subscribeToViewEvent(PreRenderViewEvent.class, this);
        }
    }


    private UIViewRoot getUIViewRoot(UIComponent component) {
        UIComponent resolved = component;
        for (int i = 0; i < Integer.MAX_VALUE; i++) {
            if (resolved instanceof UIViewRoot) {
                return (UIViewRoot) resolved;
            }
            resolved = resolved.getParent();
        }
        throw new IllegalStateException("No UIViewRoot found in tree");
    }

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