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1
30
31 package com.steadystate.css.dom;
32
33 import java.io.IOException  ;
34 import java.io.Serializable ;
35 import java.io.StringReader ;
36 import org.w3c.dom.*;
37 import org.w3c.dom.stylesheets.*;
38 import org.w3c.dom.css.*;
39 import org.w3c.css.sac.*;
40 import com.steadystate.css.parser.*;
41
42
47 public class CSSMediaRuleImpl implements CSSMediaRule, Serializable {
48
49 private CSSStyleSheetImpl _parentStyleSheet = null;
50 private CSSRule _parentRule = null;
51 private MediaList _media = null;
52 private CSSRuleList _rules = null;
53
54 public CSSMediaRuleImpl(
55 CSSStyleSheetImpl parentStyleSheet,
56 CSSRule parentRule,
57 MediaList media) {
58 _parentStyleSheet = parentStyleSheet;
59 _parentRule = parentRule;
60 _media = media;
61 }
62
63 public short getType() {
64 return MEDIA_RULE;
65 }
66
67 public String getCssText() {
68 StringBuffer sb = new StringBuffer ("@media ");
69 sb.append(getMedia().toString()).append(" {");
70 for (int i = 0; i < getCssRules().getLength(); i++) {
71 CSSRule rule = getCssRules().item(i);
72 sb.append(rule.getCssText()).append(" ");
73 }
74 sb.append("}");
75 return sb.toString();
76 }
77
78 public void setCssText(String cssText) throws DOMException {
79 if (_parentStyleSheet != null && _parentStyleSheet.isReadOnly()) {
80 throw new DOMExceptionImpl(
81 DOMException.NO_MODIFICATION_ALLOWED_ERR,
82 DOMExceptionImpl.READ_ONLY_STYLE_SHEET);
83 }
84
85 try {
86 InputSource is = new InputSource(new StringReader (cssText));
87 CSSOMParser parser = new CSSOMParser();
88 CSSRule r = parser.parseRule(is);
89
90 if (r.getType() == CSSRule.MEDIA_RULE) {
92 _media = ((CSSMediaRuleImpl)r)._media;
93 _rules = ((CSSMediaRuleImpl)r)._rules;
94 } else {
95 throw new DOMExceptionImpl(
96 DOMException.INVALID_MODIFICATION_ERR,
97 DOMExceptionImpl.EXPECTING_MEDIA_RULE);
98 }
99 } catch (CSSException e) {
100 throw new DOMExceptionImpl(
101 DOMException.SYNTAX_ERR,
102 DOMExceptionImpl.SYNTAX_ERROR,
103 e.getMessage());
104 } catch (IOException e) {
105 throw new DOMExceptionImpl(
106 DOMException.SYNTAX_ERR,
107 DOMExceptionImpl.SYNTAX_ERROR,
108 e.getMessage());
109 }
110 }
111
112 public CSSStyleSheet getParentStyleSheet() {
113 return _parentStyleSheet;
114 }
115
116 public CSSRule getParentRule() {
117 return _parentRule;
118 }
119
120 public MediaList getMedia() {
121 return _media;
122 }
123
124 public CSSRuleList getCssRules() {
125 return _rules;
126 }
127
128 public int insertRule(String rule, int index) throws DOMException {
129 if (_parentStyleSheet != null && _parentStyleSheet.isReadOnly()) {
130 throw new DOMExceptionImpl(
131 DOMException.NO_MODIFICATION_ALLOWED_ERR,
132 DOMExceptionImpl.READ_ONLY_STYLE_SHEET);
133 }
134
135 try {
136 InputSource is = new InputSource(new StringReader (rule));
137 CSSOMParser parser = new CSSOMParser();
138 parser.setParentStyleSheet(_parentStyleSheet);
139 CSSRule r = parser.parseRule(is);
142
143 ((CSSRuleListImpl)getCssRules()).insert(r, index);
145
146 } catch (ArrayIndexOutOfBoundsException e) {
147 throw new DOMExceptionImpl(
148 DOMException.INDEX_SIZE_ERR,
149 DOMExceptionImpl.ARRAY_OUT_OF_BOUNDS,
150 e.getMessage());
151 } catch (CSSException e) {
152 throw new DOMExceptionImpl(
153 DOMException.SYNTAX_ERR,
154 DOMExceptionImpl.SYNTAX_ERROR,
155 e.getMessage());
156 } catch (IOException e) {
157 throw new DOMExceptionImpl(
158 DOMException.SYNTAX_ERR,
159 DOMExceptionImpl.SYNTAX_ERROR,
160 e.getMessage());
161 }
162 return index;
163 }
164
165 public void deleteRule(int index) throws DOMException {
166 if (_parentStyleSheet != null && _parentStyleSheet.isReadOnly()) {
167 throw new DOMExceptionImpl(
168 DOMException.NO_MODIFICATION_ALLOWED_ERR,
169 DOMExceptionImpl.READ_ONLY_STYLE_SHEET);
170 }
171 try {
172 ((CSSRuleListImpl)getCssRules()).delete(index);
173 } catch (ArrayIndexOutOfBoundsException e) {
174 throw new DOMExceptionImpl(
175 DOMException.INDEX_SIZE_ERR,
176 DOMExceptionImpl.ARRAY_OUT_OF_BOUNDS,
177 e.getMessage());
178 }
179 }
180
181 public void setRuleList(CSSRuleListImpl rules) {
182 _rules = rules;
183 }
184
185 public String toString() {
186 return getCssText();
187 }
188 }
189 |
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