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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  
20  package org.apache.myfaces.tobago.internal.util;
21  
22  import org.apache.myfaces.tobago.compat.FacesUtilsEL;
23  
24  import javax.faces.component.UIComponent;
25  import javax.faces.context.FacesContext;
26  import javax.faces.el.ValueBinding;
27  
28  public final class ComponentAttributeUtils {
29  
30    private ComponentAttributeUtils() {
31    }
32  
33    public static void setBooleanProperty(UIComponent component, String name, String value) {
34      if (value != null) {
35        if (isValueReference(value)) {
36          component.setValueExpression(name, FacesUtilsEL.createValueExpression(value));
37        } else {
38          component.getAttributes().put(name, Boolean.valueOf(value));
39        }
40      }
41    }
42  
43    public static void setStringProperty(UIComponent component, String name, String value) {
44      if (value != null) {
45        if (isValueReference(value)) {
46          component.setValueExpression(name, FacesUtilsEL.createValueExpression(value));
47        } else {
48          component.getAttributes().put(name, value);
49        }
50      }
51    }
52  
53    public static boolean isValueReference(String value) {
54  
55        int start = value.indexOf("#{");
56        if (start < 0) {
57          return false;
58        }
59        int end = value.lastIndexOf('}');
60        return (end >=0 && start < end);
61    }
62  
63    /**
64     * @deprecated Since 2.0.0, please use {@link FacesUtilsEL#createValueExpression(String string)}
65     */
66    @Deprecated
67    public static ValueBinding createValueBinding(String value) {
68      return FacesContext.getCurrentInstance().getApplication().createValueBinding(value);
69    }
70  
71  }