1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.myfaces.commons.facelets.util;
20
21 import javax.faces.component.UIComponent;
22 import javax.faces.context.FacesContext;
23
24 public final class FaceletsFunctionLibrary
25 {
26
27 public FaceletsFunctionLibrary()
28 {
29 super();
30 }
31
32 public static UIComponent findComponent(String expr)
33 {
34 return FacesContext.getCurrentInstance().
35 getViewRoot().findComponent(expr);
36 }
37
38 public static String outputClientId(String expr)
39 {
40 FacesContext ctx = FacesContext.getCurrentInstance();
41 return ctx.getViewRoot().findComponent(expr).getClientId(ctx);
42 }
43
44 public static UIComponent findComponentFrom(UIComponent c, String expr)
45 {
46 if (c != null)
47 {
48 return c.findComponent(expr);
49 }
50 return null;
51 }
52 }