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1
19
20 package org.netbeans.modules.languages.features;
21
22 import org.netbeans.api.languages.ASTPath;
23 import org.netbeans.api.languages.Highlighting;
24 import org.netbeans.api.languages.LanguagesManager;
25 import org.netbeans.api.languages.ParseException;
26 import org.netbeans.api.languages.ASTPath;
27 import org.netbeans.api.languages.ASTToken;
28 import org.netbeans.api.languages.SyntaxContext;
29 import org.netbeans.api.lexer.Token;
30 import org.netbeans.api.lexer.TokenHierarchy;
31 import org.netbeans.api.lexer.TokenSequence;
32 import org.netbeans.api.languages.Context;
33 import org.netbeans.api.languages.Context;
34 import org.netbeans.api.languages.SyntaxContext;
35 import org.netbeans.api.languages.ASTNode;
36 import org.netbeans.api.languages.ParseException;
37 import org.netbeans.api.languages.ASTToken;
38 import org.netbeans.api.languages.Highlighting;
39 import org.netbeans.modules.editor.NbEditorDocument;
40 import org.netbeans.modules.languages.Feature;
41 import org.netbeans.modules.languages.Language;
42 import org.netbeans.modules.languages.LanguagesManagerImpl;
43 import org.netbeans.modules.languages.ParserManagerImpl;
44 import java.awt.Color  ;
45 import java.awt.event.MouseEvent ;
46 import java.awt.event.MouseListener ;
47 import java.awt.event.MouseMotionListener ;
48 import javax.swing.JEditorPane ;
49 import javax.swing.text.AttributeSet ;
50 import javax.swing.text.SimpleAttributeSet ;
51 import javax.swing.text.StyleConstants ;
52
53
54
58 public class HyperlinkListener implements MouseMotionListener ,
59 MouseListener {
60
61 private Context context = null;
62 private Language language;
63 private Runnable runnable = null;
64
65 public HyperlinkListener (Language l) {
66 language = l;
67 }
68
69 public void mouseMoved (MouseEvent e) {
70 JEditorPane c = (JEditorPane ) e.getComponent ();
71 NbEditorDocument doc = (NbEditorDocument) c.getDocument ();
72 if (!e.isControlDown ()) {
73 if (context != null)
74 removeHighlihgt (doc);
75 return;
76 }
77
78 Object [] r = findEvaluator (
79 doc,
80 c.viewToModel (e.getPoint ())
81 );
82
83 if (context != null && (r == null || context != r [0])) {
84 removeHighlihgt (doc);
85 }
86 if (r != null) {
87 Feature hyperlink = (Feature) r [1];
88 runnable = (Runnable ) hyperlink.getValue ((Context) r [0]);
89 if (runnable != null) {
90 context = (Context) r [0];
91 highlight (doc);
92 }
93 }
94 c.repaint ();
95 }
96
97 public void mouseClicked (MouseEvent e) {
98 }
99
100 public void mouseReleased (MouseEvent e) {
101 if (context == null) return;
102 if (runnable != null)
103 runnable.run ();
104 JEditorPane c = (JEditorPane ) e.getComponent ();
105 NbEditorDocument doc = (NbEditorDocument) c.getDocument ();
106 runnable = null;
107 removeHighlihgt (doc);
108 c.repaint ();
109 }
110
111 public void mousePressed (MouseEvent e) {
112 if (context == null) return;
113 JEditorPane c = (JEditorPane ) e.getComponent ();
114 NbEditorDocument doc = (NbEditorDocument) c.getDocument ();
115 highlight (doc);
116 c.repaint ();
117 }
118
119 public void mouseExited (MouseEvent e) {}
120 public void mouseEntered (MouseEvent e) {}
121 public void mouseDragged (MouseEvent e) {}
122
123 private void highlight (NbEditorDocument doc) {
124 if (context instanceof SyntaxContext) {
125 Object o = null;
126 o = ((SyntaxContext) context).getASTPath ().getLeaf ();
127 if (o instanceof ASTToken)
128 Highlighting.getHighlighting (doc).highlight (
129 (ASTToken) o,
130 getHyperlinkPressedAS ()
131 );
132 else
133 Highlighting.getHighlighting (doc).highlight (
134 (ASTNode) o,
135 getHyperlinkPressedAS ()
136 );
137 } else {
138 TokenSequence ts = context.getTokenSequence ();
139 Token t = ts.token ();
140 ASTToken stoken = ASTToken.create (
141 ts.language ().mimeType (),
142 t.id ().name (),
143 t.text ().toString (),
144 ts.offset ()
145 );
146 Highlighting.getHighlighting (doc).highlight (
147 stoken,
148 getHyperlinkPressedAS ()
149 );
150 }
151 }
152
153 private void removeHighlihgt (NbEditorDocument doc) {
154 if (context instanceof SyntaxContext) {
155 Object o = null;
156 o = ((SyntaxContext) context).getASTPath ().getLeaf ();
157 if (o instanceof ASTToken)
158 Highlighting.getHighlighting (doc).removeHighlight (
159 (ASTToken) o
160 );
161 else
162 Highlighting.getHighlighting (doc).removeHighlight (
163 (ASTNode) o
164 );
165 } else {
166 TokenSequence ts = context.getTokenSequence ();
167 Token t = ts.token ();
168 ASTToken stoken = ASTToken.create (
169 ts.language ().mimeType (),
170 t.id ().name (),
171 t.text ().toString (),
172 ts.offset ()
173 );
174 Highlighting.getHighlighting (doc).highlight (
175 stoken,
176 getHyperlinkPressedAS ()
177 );
178 }
179 context = null;
180 }
181
182 private Object [] findEvaluator (
183 NbEditorDocument doc,
184 int offset
185 ) {
186 try {
187 ASTNode ast = null;
188 try {
189 ast = ParserManagerImpl.get (doc).getAST ();
190 } catch (ParseException ex) {
191 ast = ex.getASTNode ();
192 }
193 if (ast == null) {
194 String mimeType = (String ) doc.getProperty ("mimeType");
195 TokenHierarchy tokenHierarchy = TokenHierarchy.get (doc);
196 TokenSequence tokenSequence = tokenHierarchy.tokenSequence ();
197 tokenSequence.move (offset);
198 tokenSequence.moveNext ();
199 Language l = ((LanguagesManagerImpl) LanguagesManager.getDefault ()).getLanguage (mimeType);
200 Token token = tokenSequence.token ();
201 Feature hyperlink = language.getFeature
202 (Language.HYPERLINK, token.id ().name ());
203 if (hyperlink != null) return new Object [] {Context.create (doc, tokenSequence), hyperlink};
204 return null;
205 }
206 ASTPath path = ast.findPath (offset);
207 if (path == null) return null;
208 int i, k = path.size ();
209 for (i = 0; i < k; i++) {
210 ASTPath p = path.subPath (i);
211 Feature hyperlink = language.getFeature (Language.HYPERLINK, p);
212 if (hyperlink != null)
213 return new Object [] {SyntaxContext.create (doc, p), hyperlink};
214 }
215 } catch (ParseException ex) {
216 }
217 return null;
218 }
219
220 private static AttributeSet hyperlinkAS = null;
221
222 private static AttributeSet getHyperlinkAS () {
223 if (hyperlinkAS == null) {
224 SimpleAttributeSet as = new SimpleAttributeSet ();
225 as.addAttribute (StyleConstants.Foreground, Color.blue);
226 as.addAttribute (StyleConstants.Underline, Color.blue);
227 hyperlinkAS = as;
228 }
229 return hyperlinkAS;
230 }
231
232 private static AttributeSet hyperlinkPressedAS = null;
233
234 private static AttributeSet getHyperlinkPressedAS () {
235 if (hyperlinkPressedAS == null) {
236 SimpleAttributeSet as = new SimpleAttributeSet ();
237 as.addAttribute (StyleConstants.Foreground, Color.red);
238 as.addAttribute (StyleConstants.Underline, Color.red);
239 hyperlinkPressedAS = as;
240 }
241 return hyperlinkPressedAS;
242 }
243 }
244
245 |
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