|
1
19 package org.netbeans.modules.xml.text.indent;
20
21 import java.util.regex.Pattern  ;
22 import javax.swing.text.BadLocationException ;
23
24 import org.netbeans.editor.Syntax;
25 import org.netbeans.editor.TokenItem;
26 import org.netbeans.editor.ext.AbstractFormatLayer;
27 import org.netbeans.editor.ext.ExtSyntaxSupport;
28 import org.netbeans.editor.ext.FormatTokenPosition;
29 import org.netbeans.editor.ext.FormatSupport;
30 import org.netbeans.editor.ext.FormatWriter;
31 import org.netbeans.editor.BaseDocument;
32 import org.netbeans.modules.editor.structure.formatting.TagBasedFormatter;
33 import org.netbeans.modules.xml.text.syntax.XMLSyntaxSupport;
34 import org.netbeans.modules.xml.text.syntax.XMLTokenIDs;
35
36 import org.netbeans.modules.xml.text.syntax.javacc.lib.JJEditorSyntax;
37
38
41 public class XMLFormatter extends TagBasedFormatter {
42
43 private static final String TAG_OPENING_PREFIX = "<"; private static final String TAG_CLOSING_PREFIX = "</"; private static final String TAG_CLOSED_SUFFIX = "/>"; private static final String TAG_CLOSING_SUFFIX = "/>";
48 private static final Pattern VALID_TAG_NAME = Pattern.compile("[\\w+|-]*");
51 private static final int WORKUNITS_MAX = 100;
52
53 public XMLFormatter(Class kitClass) {
54 super(kitClass);
55 }
56
57 public FormatSupport createFormatSupport(FormatWriter fw) {
58 return new XMLFormatSupport(fw);
59 }
60
61 protected boolean acceptSyntax(Syntax syntax) {
62 return (syntax instanceof JJEditorSyntax);
63 }
64
65 protected void initFormatLayers() {
66 addFormatLayer(new StripEndWhitespaceLayer());
67 }
68
69 protected String extractTagName(TokenItem tknTag){
70
71 String tagImage = tknTag.getImage();
72 int startIndex = -1;
73
74 if (isOpeningTag(tknTag)){
75 startIndex = TAG_OPENING_PREFIX.length();
76 } else if (isClosingTag(tknTag)){
77 startIndex = TAG_CLOSING_PREFIX.length();
78 }
79
80 if (startIndex >= 0){
81 String tagName = tagImage.substring(startIndex);
82 return tagName;
83 }
84
85 return null;
86 }
87
88 @Override protected boolean isOpeningTag(TokenItem token){
89 return token != null
90 && token.getTokenID() == XMLTokenIDs.TAG
91 && token.getImage().startsWith(TAG_OPENING_PREFIX)
92 && !token.getImage().startsWith(TAG_CLOSING_PREFIX);
93 }
94
95 @Override protected boolean isClosingTag(TokenItem token){
96 return token != null
97 && token.getTokenID() == XMLTokenIDs.TAG
98 && token.getImage().startsWith(TAG_CLOSING_PREFIX);
99 }
100
101 @Override protected int getTagEndOffset(TokenItem token){
102 TokenItem t = token.getNext();
103
104 while (t != null && t.getTokenID() != XMLTokenIDs.TAG){
105 t = t.getNext();
106 }
107
108 return t == null ? -1 : t.getOffset();
109 }
110
111 @Override protected ExtSyntaxSupport getSyntaxSupport(BaseDocument doc){
112 return (XMLSyntaxSupport)(doc.getSyntaxSupport().get(XMLSyntaxSupport.class));
113 }
114
115 @Override protected boolean areTagNamesEqual(String tagName1, String tagName2){
116 return tagName1.equals(tagName2);
117 }
118
119 @Override protected boolean isClosingTagRequired(BaseDocument doc, String tagName){
120 return true;
121 }
122
123 @Override protected int getOpeningSymbolOffset(TokenItem tknTag){
124 return tknTag.getOffset();
125 }
126
127 @Override protected TokenItem getTagTokenEndingAtPosition(BaseDocument doc, int position) throws BadLocationException {
128 if (position >= 0) {
129 ExtSyntaxSupport sup = getSyntaxSupport(doc);
130 TokenItem token = sup.getTokenChain(position, position + 1);
131
132 if (token.getTokenID() == XMLTokenIDs.TAG &&
133 token.getImage().equals(">")){ do {
135 token = token.getPrevious();
136 }
137 while (token != null && !isOpeningTag(token) && !isClosingTag(token));
138
139 return token;
140 }
141 }
142 return null;
143 }
144
145 @Override protected boolean isUnformattableToken(TokenItem token) {
146
147 if (token.getTokenID() == XMLTokenIDs.BLOCK_COMMENT
148 || token.getTokenID() == XMLTokenIDs.CDATA_SECTION){
149 return true;
150 }
151
152 return false;
153 }
154
155 @Override protected boolean isUnformattableTag(String tag) {
156 return false;
157 }
158
159 public class StripEndWhitespaceLayer extends AbstractFormatLayer {
160
161 public StripEndWhitespaceLayer() {
162 super("xml-strip-whitespace-at-line-end-layer"); }
164
165 protected FormatSupport createFormatSupport(FormatWriter fw) {
166 return new XMLFormatSupport(fw);
167 }
168
169 public void format(FormatWriter fw) {
170 XMLFormatSupport xfs = (XMLFormatSupport)createFormatSupport(fw);
171
172 FormatTokenPosition pos = xfs.getFormatStartPosition();
173
174 if ( (xfs.isLineStart(pos) == false) ||
175 xfs.isIndentOnly() ) {
177 } else { while (pos.getToken() != null) {
179 pos = xfs.removeLineEndWhitespace(pos);
180 if (pos.getToken() != null) {
181 pos = xfs.getNextPosition(pos);
182 }
183 }
184 }
185 }
186 }
187 }
188 |
Popular Tags |
Java API By Example, From Geeks To Geeks.