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16 package org.outerj.daisy.htmlcleaner;
17
18 import java.util.*;
19
20
26 public class HtmlCleanerTemplate {
27 int maxLineWidth = 80;
28 Map outputElementDescriptors = new HashMap();
29 Set allowedSpanClasses = new HashSet();
30 Set allowedDivClasses = new HashSet();
31 Set allowedParaClasses = new HashSet();
32 Set allowedPreClasses = new HashSet();
33 Map descriptors = new HashMap();
34 String  imgAlternateSrcAttr;
35 String linkAlternateHrefAttr;
36 private boolean initialised = false;
37
38 HtmlCleanerTemplate() {
39 }
41
42 void addOutputElement(String tagName, int beforeOpen, int afterOpen, int beforeClose, int afterClose, boolean inline) {
43 if (initialised)
44 throw new IllegalStateException ();
45 if (tagName == null)
46 throw new NullPointerException ();
47 OutputElementDescriptor descriptor = new OutputElementDescriptor(beforeOpen, afterOpen, beforeClose, afterClose, inline);
48 outputElementDescriptors.put(tagName, descriptor);
49 }
50
51 void setMaxLineWidth(int lineWidth) {
52 if (initialised)
53 throw new IllegalStateException ();
54 this.maxLineWidth = lineWidth;
55 }
56
57 void addAllowedSpanClass(String clazz) {
58 if (initialised)
59 throw new IllegalStateException ();
60 if (clazz == null)
61 throw new NullPointerException ();
62 allowedSpanClasses.add(clazz);
63 }
64
65 void addAllowedDivClass(String clazz) {
66 if (initialised)
67 throw new IllegalStateException ();
68 if (clazz == null)
69 throw new NullPointerException ();
70 allowedDivClasses.add(clazz);
71 }
72
73 void addAllowedParaClass(String clazz) {
74 if (initialised)
75 throw new IllegalStateException ();
76 if (clazz == null)
77 throw new NullPointerException ();
78 allowedParaClasses.add(clazz);
79 }
80
81 void addAllowedPreClass(String clazz) {
82 if (initialised)
83 throw new IllegalStateException ();
84 if (clazz == null)
85 throw new NullPointerException ();
86 allowedPreClasses.add(clazz);
87 }
88
89 void addAllowedElement(String tagName, String [] attributes) {
90 if (initialised)
91 throw new IllegalStateException ();
92 if (tagName == null)
93 throw new NullPointerException ();
94
95 ElementDescriptor descriptor = new ElementDescriptor(tagName);
96 for (int i = 0; i < attributes.length; i++) {
97 descriptor.addAttribute(attributes[i]);
98 }
99
100 descriptors.put(tagName, descriptor);
101 }
102
103 void initialize() throws Exception {
104 if (initialised)
105 throw new IllegalStateException ();
106 Map full = new XhtmlDescriptorBuilder().build();
110 relax(full);
111 narrow(full, descriptors);
112 descriptors = full;
113 initialised = true;
114 }
115
116
120 private void narrow(Map full, Map subset) {
121 String [] fullKeys = (String [])full.keySet().toArray(new String [full.size()]);
122 for (int i = 0; i < fullKeys.length; i++) {
123 if (!subset.containsKey(fullKeys[i]))
124 full.remove(fullKeys[i]);
125 }
126
127 Iterator descriptorIt = full.values().iterator();
128 while (descriptorIt.hasNext()) {
129 ElementDescriptor elementDescriptor = (ElementDescriptor)descriptorIt.next();
130 String [] childNames = (String [])elementDescriptor.getChildren().toArray(new String [0]);
131 Set newChilds = new HashSet();
132 for (int i = 0; i < childNames.length; i++) {
133 if (subset.containsKey(childNames[i]))
134 newChilds.add(childNames[i]);
135 }
136 elementDescriptor.setChildren(newChilds);
137 elementDescriptor.setAttributes(((ElementDescriptor)subset.get(elementDescriptor.getName())).getAttributes());
138 }
139 }
140
141 private void relax(Map descriptors) {
142 ElementDescriptor ulDescriptor = (ElementDescriptor)descriptors.get("ul");
145 if (ulDescriptor != null) {
146 ulDescriptor.getChildren().add("ul");
147 ulDescriptor.getChildren().add("ol");
148 }
149
150 ElementDescriptor olDescriptor = (ElementDescriptor)descriptors.get("ol");
151 if (olDescriptor != null) {
152 olDescriptor.getChildren().add("ul");
153 olDescriptor.getChildren().add("ol");
154 }
155 }
156
157 public HtmlCleaner newHtmlCleaner() {
158 return new HtmlCleaner(this);
159 }
160
161 void setImgAlternateSrcAttr(String name) {
162 this.imgAlternateSrcAttr = name;
163 }
164
165 public void setLinkAlternateHrefAttr(String linkAlternateHrefAttr) {
166 this.linkAlternateHrefAttr = linkAlternateHrefAttr;
167 }
168 }
169 |
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