Java Code Examples for javax.faces.component.UIComponent#setId()

private void resetClientIdCacheRecursively(UIComponent c) {
	String id = c.getId();
	if (null != id) {
		c.setId(id); // this strange operation clears the cache of the clientId
	}
	Iterator<UIComponent> children = c.getFacetsAndChildren();
	if (children != null) {
		while (children.hasNext()) {
			UIComponent kid = children.next();
			resetClientIdCacheRecursively(kid);
		}
	}
}
 

private void removeChildState(FacesContext faces, UIComponent c) {
	String id = c.getId();
	c.setId(id);

	Iterator itr = c.getFacetsAndChildren();
	while (itr.hasNext()) {
		removeChildState(faces, (UIComponent) itr.next());
	}
	if (this.childState != null) {
		this.childState.remove(c.getClientId(faces));
	}
}
 

private void restoreChildState(FacesContext faces, UIComponent c) {
	// reset id
	String id = c.getId();
	c.setId(id);

	// hack
	if (c instanceof EditableValueHolder) {
		EditableValueHolder evh = (EditableValueHolder) c;
		String clientId = c.getClientId(faces);
		SavedState ss = this.getChildState().get(clientId);
		if (ss != null) {
			ss.apply(evh);
		} else {
			String childId = clientId.substring(initialClientId.length() + 1);
			childId = childId.substring(childId.indexOf(getSeparatorChar(faces)) + 1);
			childId = initialClientId + getSeparatorChar(faces) + childId;
			if (initialChildState.containsKey(childId)) {
				SavedState initialState = initialChildState.get(childId);
				initialState.apply(evh);
			} else {
				NullState.apply(evh);
			}
		}
	}

	// continue hack
	Iterator itr = c.getFacetsAndChildren();
	while (itr.hasNext()) {
		restoreChildState(faces, (UIComponent) itr.next());
	}
}
 

private void resetClientIds(UIComponent component) {
	Iterator<UIComponent> iterator = component.getFacetsAndChildren();
	while (iterator.hasNext()) {
		UIComponent child = iterator.next();
		resetClientIds(child);
		child.setId(child.getId());
	}
}
 

/**
   * @param cl
   * @return
   * @throws ClassNotFoundException
   * @throws IllegalAccessException
   * @throws InstantiationException
   */
  public UIComponent restoreInstance(ClassLoader cl)
          throws ClassNotFoundException, IllegalAccessException,
          InstantiationException {
      Class<?> c = cl.loadClass(_className);
UIComponent comp = (UIComponent) c.newInstance();
comp.setId(_id);
      return comp;
  }
 

@Override
public void processDecodes(FacesContext context) {
    int first = getFirst();
    int rows = getRows();
    int last;

    if (rows == 0) {
        last = getRowCount();
    } else {
        last = first + rows;
    }

    for (int rowIndex = first; rowIndex < last; rowIndex++) {
        setRowIndex(rowIndex);
        if (isRowAvailable()) {
            for (Iterator it = getChildren().iterator(); it.hasNext();) {
                UIComponent child = (UIComponent) it.next();
                // For some reason its necessary to touch Id property,
                // otherwise the child control will not call getClientId
                // on
                // parent (NamingContainer)
                child.setId(child.getId());
                if (!child.isRendered()) {
                    continue;
                }
                child.processDecodes(context);
            }
        }
    }

    setRowIndex(-1);

    super.processDecodes(context);
}
 

@Override
public void processUpdates(FacesContext context) {
    int first = getFirst();
    int rows = getRows();
    int last;
    if (rows == 0) {
        last = getRowCount();
    } else {
        last = first + rows;
    }
    for (int rowIndex = first; rowIndex < last; rowIndex++) {
        setRowIndex(rowIndex);
        if (isRowAvailable()) {
            for (Iterator it = getChildren().iterator(); it.hasNext();) {
                UIComponent child = (UIComponent) it.next();
                // For some reason its necessary to touch Id property,
                // otherwise the child control will not call getClientId
                // on
                // parent (NamingContainer)
                child.setId(child.getId());

                if (!child.isRendered()) {
                    continue;
                }
                child.processUpdates(context);
            }
        }
    }

    setRowIndex(-1);

    super.processUpdates(context);
}
 

@Override
public void processValidators(FacesContext context) {
    int first = getFirst();
    int rows = getRows();
    int last;
    if (rows == 0) {
        last = getRowCount();
    } else {
        last = first + rows;
    }
    for (int rowIndex = first; rowIndex < last; rowIndex++) {
        setRowIndex(rowIndex);
        if (isRowAvailable()) {
            for (Iterator it = getChildren().iterator(); it.hasNext();) {
                UIComponent child = (UIComponent) it.next();
                // For some reason its necessary to touch Id property,
                // otherwise the child control will not call getClientId
                // on
                // parent (NamingContainer)
                child.setId(child.getId());
                if (!child.isRendered()) {
                    continue;
                }
                child.processValidators(context);
            }
        }
    }

    setRowIndex(-1);

    super.processValidators(context);
}
 

@Override
public void encodeChildren(FacesContext context, UIComponent component) throws IOException {

    UIDataRepeater dataRepeater = (UIDataRepeater) component;

    int first = dataRepeater.getFirst();
    int rows = dataRepeater.getRows();
    int rowCount = dataRepeater.getRowCount();

    if (rows <= 0) {
        rows = rowCount - first;
    }

    int last = first + rows;

    if (last > rowCount) {
        last = rowCount;
    }

    for (int i = first; i < last; i++) {
        dataRepeater.setRowIndex(i);
        if (dataRepeater.isRowAvailable()) {
            if (dataRepeater.getChildCount() > 0) {
                for (Iterator it = dataRepeater.getChildren().iterator(); it.hasNext();) {
                    UIComponent child = (UIComponent) it.next();
                    // For some reason its necessary to touch Id property,
                    // otherwise
                    // the child control will not call getClientId on parent
                    // (NamingContainer)
                    child.setId(child.getId());
                    encodeRecursive(context, child);
                }
            }

        }
    }
}
 

/**
 * @param root
 * @param p
 * @param instance
 * @throws Exception
 */
public static void resetContainerChild(UIViewRoot root, UIComponent p,
        UIComponent instance) throws Exception{
    
    // clear out any changes caused by the previous rendering/encode
    Map<String, Object> rootAttrs = TypedUtil.getAttributes(root);
    rootAttrs.put("dojoParseOnLoad", false);
    rootAttrs.put("dojoTheme", false);
    rootAttrs.put("loadXspClientDojoUI",false);
    if( ! UIViewRoot.class.equals(root.getClass()) ){
        // UIViewRootEx and the other subclass have this clear.. method
        // root.clearEncodeResources();
        Method mtd = root.getClass().getMethod("clearEncodeResources", new Class[0]);
        if( null != mtd ){
            mtd.invoke(root, new Object[0]);
        }
        //root._lastUniqueId = 100;
        Class<?> viewRootClass = Class.forName("com.ibm.xsp.component.UIViewRootEx");
        Field lastIdField = viewRootClass.getDeclaredField("_lastUniqueId");
        lastIdField.setAccessible(true); // change private to public
        try{
            lastIdField.set(root, 100);
        }finally{
            lastIdField.setAccessible(false);
        }
    }
    
    UIComponent rootChild = TypedUtil.getChildren(root).get(0);
    if( !(rootChild instanceof UIForm) && rootChild.getClass().getName().contains("ScriptCollector") ){
        // rootChild is a UIScriptCollector
        UIComponent scriptCollector = rootChild;
        // scriptCollector.reset();
        Method resetMethod = scriptCollector.getClass().getMethod("reset");
        resetMethod.invoke(scriptCollector);
    }
    
    // remove any previous child of the container
    List<UIComponent> kids = TypedUtil.getChildren(p);
    kids.clear();
    kids.add(instance);
    
    // ensure the child has an auto-generated ID.
    if (instance.getId() == null){ 
        instance.setId(root.createUniqueId());
    }
    
    FacesUtil.checkComponentIds(root, p);
}