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Java > Open Source Codes > org > w3c > dom > css > CSSRule


1 /*
2  * Copyright (c) 2000 World Wide Web Consortium,
3  * (Massachusetts Institute of Technology, Institut National de
4  * Recherche en Informatique et en Automatique, Keio University). All
5  * Rights Reserved. This program is distributed under the W3C's Software
6  * Intellectual Property License. This program is distributed in the
7  * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
8  * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
9  * PURPOSE.
10  * See W3C License http://www.w3.org/Consortium/Legal/ for more details.
11  */
12
13 package org.w3c.dom.css;
14
15 import org.w3c.dom.DOMException JavaDoc;
16
17 /**
18  * The <code>CSSRule</code> interface is the abstract base interface for any
19  * type of CSS statement. This includes both rule sets and at-rules. An
20  * implementation is expected to preserve all rules specified in a CSS style
21  * sheet, even if the rule is not recognized by the parser. Unrecognized
22  * rules are represented using the <code>CSSUnknownRule</code> interface.
23  * <p>See also the <a HREF='http://www.w3.org/TR/2000/REC-DOM-Level-2-Style-20001113'>Document Object Model (DOM) Level 2 Style Specification</a>.
24  * @since DOM Level 2
25  */
26 public interface CSSRule {
27     // RuleType
28 /**
29      * The rule is a <code>CSSUnknownRule</code>.
30      */
31     public static final short UNKNOWN_RULE = 0;
32     /**
33      * The rule is a <code>CSSStyleRule</code>.
34      */
35     public static final short STYLE_RULE = 1;
36     /**
37      * The rule is a <code>CSSCharsetRule</code>.
38      */
39     public static final short CHARSET_RULE = 2;
40     /**
41      * The rule is a <code>CSSImportRule</code>.
42      */
43     public static final short IMPORT_RULE = 3;
44     /**
45      * The rule is a <code>CSSMediaRule</code>.
46      */
47     public static final short MEDIA_RULE = 4;
48     /**
49      * The rule is a <code>CSSFontFaceRule</code>.
50      */
51     public static final short FONT_FACE_RULE = 5;
52     /**
53      * The rule is a <code>CSSPageRule</code>.
54      */
55     public static final short PAGE_RULE = 6;
56
57     /**
58      * The type of the rule, as defined above. The expectation is that
59      * binding-specific casting methods can be used to cast down from an
60      * instance of the <code>CSSRule</code> interface to the specific
61      * derived interface implied by the <code>type</code>.
62      */
63     public short getType();
64
65     /**
66      * The parsable textual representation of the rule. This reflects the
67      * current state of the rule and not its initial value.
68      * @exception DOMException
69      * SYNTAX_ERR: Raised if the specified CSS string value has a syntax
70      * error and is unparsable.
71      * <br>INVALID_MODIFICATION_ERR: Raised if the specified CSS string
72      * value represents a different type of rule than the current one.
73      * <br>HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at
74      * this point in the style sheet.
75      * <br>NO_MODIFICATION_ALLOWED_ERR: Raised if the rule is readonly.
76      */
77     public String JavaDoc getCssText();
78     public void setCssText(String JavaDoc cssText)
79                         throws DOMException JavaDoc;
80
81     /**
82      * The style sheet that contains this rule.
83      */
84     public CSSStyleSheet getParentStyleSheet();
85
86     /**
87      * If this rule is contained inside another rule (e.g. a style rule
88      * inside an @media block), this is the containing rule. If this rule is
89      * not nested inside any other rules, this returns <code>null</code>.
90      */
91     public CSSRule getParentRule();
92
93 }
94
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