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16 package org.outerj.daisy.frontend.editor;
17
18 import org.outerj.daisy.repository.VariantKey;
19 import org.outerj.daisy.repository.RepositoryException;
20 import org.outerj.daisy.repository.variant.VariantManager;
21 import org.outerj.daisy.repository.variant.BranchNotFoundException;
22 import org.outerj.daisy.repository.variant.LanguageNotFoundException;
23 import org.outerj.daisy.util.Constants;
24 import org.apache.cocoon.forms.formmodel.Widget;
25 import org.apache.cocoon.forms.formmodel.MultiValueField;
26 import org.apache.cocoon.forms.formmodel.Field;
27 import org.apache.cocoon.forms.validation.ValidationError;
28 import org.apache.cocoon.forms.validation.ValidationErrorAware;
29
30 import java.util.regex.Matcher  ;
31
32
35 public class LinkFieldHelper {
36 public static VariantKey parseVariantKey(String link, VariantManager variantManager) {
37 Matcher matcher = Constants.DAISY_LINK_PATTERN.matcher(link);
38 if (!matcher.matches())
39 throw new IllegalArgumentException ("Invalid link: " + link);
40
41 long documentId = Long.parseLong(matcher.group(1));
42 String branchInput = matcher.group(3);
43 String languageInput = matcher.group(5);
44 long branchId, languageId;
45
46 if (branchInput != null && branchInput.length() > 0) {
47 try {
48 branchId = variantManager.getBranch(branchInput, false).getId();
49 } catch (RepositoryException e) {
50 throw new RuntimeException (e);
51 }
52 } else {
53 branchId = -1;
54 }
55
56 if (languageInput != null && languageInput.length() > 0) {
57 try {
58 languageId = variantManager.getLanguage(languageInput, false).getId();
59 } catch (RepositoryException e) {
60 throw new RuntimeException (e);
61 }
62 } else {
63 languageId = -1;
64 }
65
66 return new VariantKey(documentId, branchId, languageId);
67 }
68
69 public static String variantKeyToString(VariantKey variantKey, VariantManager variantManager) {
70 StringBuffer text = new StringBuffer (20);
71 text.append("daisy:");
72 text.append(variantKey.getDocumentId());
73 if (variantKey.getBranchId() != -1 || variantKey.getLanguageId() != -1) {
74 text.append("@");
75 if (variantKey.getBranchId() != -1) {
76 String branchName;
77 try {
78 branchName = variantManager.getBranch(variantKey.getBranchId(), false).getName();
79 } catch (RepositoryException e) {
80 branchName = String.valueOf(variantKey.getBranchId());
81 }
82 text.append(branchName);
83 }
84 if (variantKey.getLanguageId() != -1) {
85 text.append(":");
86 String languageName;
87 try {
88 languageName = variantManager.getLanguage(variantKey.getLanguageId(), false).getName();
89 } catch (RepositoryException e) {
90 languageName = String.valueOf(variantKey.getLanguageId());
91 }
92 text.append(languageName);
93 }
94 }
95 return text.toString();
96 }
97
98 public static boolean validate(Widget widget, VariantManager variantManager) {
99 if (widget.getValue() == null)
100 return true;
101 if (widget instanceof MultiValueField) {
102 Object [] values = (Object [])widget.getValue();
103 boolean result = true;
104 for (int i = 0; i < values.length; i++) {
105 result = validateLink((String )values[i], (ValidationErrorAware)widget, variantManager);
106 if (!result)
107 return result;
108 }
109 return result;
110 } else if (widget instanceof Field) {
111 return validateLink((String )widget.getValue(), (ValidationErrorAware)widget, variantManager);
112 } else {
113 throw new RuntimeException ("Unexpected type of widget: " + widget.getClass().getName());
114 }
115 }
116
117 private static boolean validateLink(String link, ValidationErrorAware widget, VariantManager variantManager) {
118 link = link.trim();
119 Matcher matcher = Constants.DAISY_LINK_PATTERN.matcher(link);
120 if (matcher.matches()) {
121 String branchInput = matcher.group(3);
122 String languageInput = matcher.group(5);
123
124
126 if (branchInput != null && branchInput.length() > 0) {
127 try {
128 variantManager.getBranch(branchInput, false);
129 } catch (BranchNotFoundException e) {
130 widget.setValidationError(new ValidationError("editdoc.link-no-valid-branch", new String [] {branchInput}));
131 return false;
132 } catch (RepositoryException e) {
133 widget.setValidationError(new ValidationError("Error testing branch existence: " + e.toString(), false));
134 return false;
135 }
136 }
137
138 if (languageInput != null && languageInput.length() > 0) {
139 try {
140 variantManager.getLanguage(languageInput, false);
141 } catch (LanguageNotFoundException e) {
142 widget.setValidationError(new ValidationError("editdoc.link-no-valid-language", new String [] {languageInput}));
143 return false;
144 } catch (RepositoryException e) {
145 widget.setValidationError(new ValidationError("Error testing language existence: " + e.toString()));
146 return false;
147 }
148 }
149 } else {
150 widget.setValidationError(new ValidationError("editdoc.link-not-valid", new String [] {link}));
151 return false;
152 }
153 return true;
154 }
155
156 }
157 |
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