KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > batik > css > engine > sac > CSSConditionalSelector


1 /*
2
3    Copyright 2002 The Apache Software Foundation
4
5    Licensed under the Apache License, Version 2.0 (the "License");
6    you may not use this file except in compliance with the License.
7    You may obtain a copy of the License at
8
9        http://www.apache.org/licenses/LICENSE-2.0
10
11    Unless required by applicable law or agreed to in writing, software
12    distributed under the License is distributed on an "AS IS" BASIS,
13    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14    See the License for the specific language governing permissions and
15    limitations under the License.
16
17  */
18 package org.apache.batik.css.engine.sac;
19
20 import java.util.Set JavaDoc;
21
22 import org.w3c.css.sac.Condition;
23 import org.w3c.css.sac.ConditionalSelector;
24 import org.w3c.css.sac.SimpleSelector;
25 import org.w3c.dom.Element JavaDoc;
26
27 /**
28  * This class provides an implementation of the
29  * {@link org.w3c.css.sac.ConditionalSelector} interface.
30  *
31  * @author <a HREF="mailto:stephane@hillion.org">Stephane Hillion</a>
32  * @version $Id: CSSConditionalSelector.java,v 1.4 2004/08/18 07:12:51 vhardy Exp $
33  */
34 public class CSSConditionalSelector
35     implements ConditionalSelector,
36            ExtendedSelector {
37
38     /**
39      * The simple selector.
40      */
41     protected SimpleSelector simpleSelector;
42
43     /**
44      * The condition.
45      */
46     protected Condition condition;
47
48     /**
49      * Creates a new ConditionalSelector object.
50      */
51     public CSSConditionalSelector(SimpleSelector s, Condition c) {
52     simpleSelector = s;
53     condition = c;
54     }
55
56     /**
57      * Indicates whether some other object is "equal to" this one.
58      * @param obj the reference object with which to compare.
59      */
60     public boolean equals(Object JavaDoc obj) {
61     if (obj == null || !(obj.getClass() != getClass())) {
62         return false;
63     }
64     CSSConditionalSelector s = (CSSConditionalSelector)obj;
65     return s.simpleSelector.equals(simpleSelector) &&
66            s.condition.equals(condition);
67     }
68
69     /**
70      * <b>SAC</b>: Implements {@link
71      * org.w3c.css.sac.Selector#getSelectorType()}.
72      */
73     public short getSelectorType() {
74     return SAC_CONDITIONAL_SELECTOR;
75     }
76
77     /**
78      * Tests whether this selector matches the given element.
79      */
80     public boolean match(Element JavaDoc e, String JavaDoc pseudoE) {
81     return ((ExtendedSelector)getSimpleSelector()).match(e, pseudoE) &&
82            ((ExtendedCondition)getCondition()).match(e, pseudoE);
83     }
84
85     /**
86      * Fills the given set with the attribute names found in this selector.
87      */
88     public void fillAttributeSet(Set JavaDoc attrSet) {
89     ((ExtendedSelector)getSimpleSelector()).fillAttributeSet(attrSet);
90         ((ExtendedCondition)getCondition()).fillAttributeSet(attrSet);
91     }
92
93     /**
94      * Returns the specificity of this selector.
95      */
96     public int getSpecificity() {
97     return ((ExtendedSelector)getSimpleSelector()).getSpecificity() +
98            ((ExtendedCondition)getCondition()).getSpecificity();
99     }
100
101     /**
102      * <b>SAC</b>: Implements {@link
103      * org.w3c.css.sac.ConditionalSelector#getSimpleSelector()}.
104      */
105     public SimpleSelector getSimpleSelector() {
106     return simpleSelector;
107     }
108
109     /**
110      * <b>SAC</b>: Implements {@link
111      * org.w3c.css.sac.ConditionalSelector#getCondition()}.
112      */
113     public Condition getCondition() {
114     return condition;
115     }
116
117     /**
118      * Returns a representation of the selector.
119      */
120     public String JavaDoc toString() {
121     return "" + simpleSelector + condition;
122     }
123 }
124
Popular Tags