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/*
* The MIT License
*
* Copyright (c) 2009-2023 PrimeTek Informatics
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.primefaces.util;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.faces.component.*;
import javax.faces.context.FacesContext;
public class ComponentTraversalUtils {
private ComponentTraversalUtils() {
}
public static T closest(Class type, UIComponent base) {
return closest(type, base, false);
}
public static T closest(Class type, UIComponent base, boolean considerBase) {
if (considerBase && type.isAssignableFrom(base.getClass())) {
return (T) base;
}
UIComponent parent = base.getParent();
while (parent != null) {
if (type.isAssignableFrom(parent.getClass())) {
return (T) parent;
}
parent = parent.getParent();
}
return null;
}
public static T first(Class type, UIComponent base) {
T result = null;
Iterator kids = base.getFacetsAndChildren();
while (kids.hasNext()) {
UIComponent kid = kids.next();
if (type.isAssignableFrom(kid.getClass())) {
result = (T) kid;
break;
}
result = first(type, kid);
if (result != null) {
break;
}
}
return result;
}
public static List children(Class type, UIComponent base) {
List result = new ArrayList<>();
Iterator kids = base.getFacetsAndChildren();
while (kids.hasNext()) {
UIComponent kid = kids.next();
if (type.isAssignableFrom(kid.getClass())) {
result.add((T) kid);
}
}
return result;
}
public static void withId(String id, UIComponent base, List components) {
if (id.equals(base.getId())) {
components.add(base);
}
if (base.getFacetCount() > 0) {
for (UIComponent facet : base.getFacets().values()) {
withId(id, facet, components);
}
}
if (base.getChildCount() > 0) {
for (int i = 0, childCount = base.getChildCount(); i < childCount; i++) {
UIComponent child = base.getChildren().get(i);
withId(id, child, components);
}
}
}
/**
* Finds the first component with the given id (NOT clientId!).
* Also used by p:resolveFirstComponentWithId.
*
* @param id The id.
* @param base The base component to start the traversal.
* @return The component or null.
*/
public static UIComponent firstWithId(String id, UIComponent base) {
if (id.equals(base.getId())) {
return base;
}
UIComponent result = null;
Iterator kids = base.getFacetsAndChildren();
while (kids.hasNext()) {
UIComponent kid = kids.next();
if (id.equals(kid.getId())) {
result = kid;
break;
}
result = firstWithId(id, kid);
if (result != null) {
break;
}
}
return result;
}
/**
* Finds the first component by the given id expression or client id.
*
* @param id The id.
* @param base The base component to start the traversal.
* @param separatorChar The separatorChar (e.g. :).
* @param context The FacesContext.
* @param callback the callback for the found component
*/
public static void firstById(String id, UIComponent base, char separatorChar, FacesContext context, ContextCallback callback) {
// try #findComponent first
UIComponent component = base.findComponent(id);
// try #invokeOnComponent
// it's required to support e.g. a full client id for a component which is placed inside UIData components
if (component == null) {
// #invokeOnComponent doesn't support the leading seperator char
String tempExpression = id;
if (tempExpression.charAt(0) == separatorChar) {
tempExpression = tempExpression.substring(1);
}
context.getViewRoot().invokeOnComponent(context, tempExpression, callback);
}
else {
callback.invokeContextCallback(context, component);
}
}
/**
* @deprecated use closestForm(UIComponent component)
*/
@Deprecated
public static UIForm closestForm(FacesContext context, UIComponent component) {
return closest(UIForm.class, component);
}
public static UIForm closestForm(UIComponent component) {
return closest(UIForm.class, component);
}
public static UniqueIdVendor closestUniqueIdVendor(UIComponent component) {
return closest(UniqueIdVendor.class, component);
}
public static UIComponent closestNamingContainer(UIComponent component) {
return (UIComponent) closest(NamingContainer.class, component);
}
}
