0
|
1 /*
|
|
2 * Copyright 2001-2002 Sun Microsystems, Inc. All Rights Reserved.
|
|
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
4 *
|
|
5 * This code is free software; you can redistribute it and/or modify it
|
|
6 * under the terms of the GNU General Public License version 2 only, as
|
|
7 * published by the Free Software Foundation.
|
|
8 *
|
|
9 * This code is distributed in the hope that it will be useful, but WITHOUT
|
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
12 * version 2 for more details (a copy is included in the LICENSE file that
|
|
13 * accompanied this code).
|
|
14 *
|
|
15 * You should have received a copy of the GNU General Public License version
|
|
16 * 2 along with this work; if not, write to the Free Software Foundation,
|
|
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
18 *
|
|
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
21 * have any questions.
|
|
22 *
|
|
23 */
|
|
24
|
|
25 package sun.jvm.hotspot.ui;
|
|
26
|
|
27 import java.awt.*;
|
|
28 import java.awt.event.*;
|
|
29 import java.io.*;
|
|
30 import java.net.*;
|
|
31 import java.util.*;
|
|
32 import javax.swing.*;
|
|
33 import javax.swing.text.BadLocationException;
|
|
34
|
|
35 /** Panel supporting loading of and scrolling through source code.
|
|
36 Contains convenience routines for implementing the Editor
|
|
37 interface. */
|
|
38
|
|
39 public class SourceCodePanel extends JPanel {
|
|
40 private JTextArea source;
|
|
41 private RowHeader header;
|
|
42 private String filename;
|
|
43 // Amount of white space between edges, line numbers and icons
|
|
44 private static final int LINE_NO_SPACE = 4;
|
|
45 // Size of icons in resources directory
|
|
46 private static final int ICON_SIZE = 12;
|
|
47 // Icons used in panel drawing
|
|
48 private static Icon topFrameCurLine;
|
|
49 private static Icon lowerFrameCurLine;
|
|
50 private static Icon breakpoint;
|
|
51 // State
|
|
52 private int highlightedLine = -1;
|
|
53 private Set/*<Integer>*/ breakpoints = new HashSet(); // Zero-based lines internally
|
|
54 // Parent Editor container and EditorCommands object for setting breakpoints
|
|
55 private EditorCommands comm;
|
|
56 private Editor parent;
|
|
57
|
|
58 /** Support for displaying icons and line numbers in row header of
|
|
59 scroll pane */
|
|
60 class RowHeader extends JPanel {
|
|
61 private JViewport view;
|
|
62 private boolean showLineNumbers;
|
|
63 private int width;
|
|
64 private int rowHeight;
|
|
65 private boolean initted;
|
|
66
|
|
67 public RowHeader() {
|
|
68 super();
|
|
69 initted = true;
|
|
70 addHierarchyBoundsListener(new HierarchyBoundsAdapter() {
|
|
71 public void ancestorResized(HierarchyEvent e) {
|
|
72 recomputeSize();
|
|
73 }
|
|
74 });
|
|
75 }
|
|
76
|
|
77 public void paint(Graphics g) {
|
|
78 super.paint(g);
|
|
79 if (getShowLineNumbers()) {
|
|
80 // Visible region of header panel, in coordinate system of the
|
|
81 // panel, is provided by clip bounds of Graphics object. This
|
|
82 // is used to figure out which line numbers to draw.
|
|
83 Rectangle clip = g.getClipBounds();
|
|
84 // To avoid missing lines, round down starting line number and
|
|
85 // round up ending line number
|
|
86 int start = clip.y / rowHeight;
|
|
87 int end = start + (clip.height + (rowHeight - 1)) / rowHeight;
|
|
88 // Draw these line numbers, right justified to look better
|
|
89 FontMetrics fm = getFontMetrics(getFont());
|
|
90 int ascent = fm.getMaxAscent(); // Causes proper alignment -- trial-and-error
|
|
91 for (int i = start; i <= end; i++) {
|
|
92 // Line numbers are 1-based
|
|
93 String str = Integer.toString(i + 1);
|
|
94 int strWidth = GraphicsUtilities.getStringWidth(str, fm);
|
|
95 g.drawString(str, width - strWidth - LINE_NO_SPACE, ascent + rowHeight * i);
|
|
96
|
|
97 // Draw breakpoint if necessary
|
|
98 if (breakpoints.contains(new Integer(i))) {
|
|
99 breakpoint.paintIcon(this, g, LINE_NO_SPACE, rowHeight * i);
|
|
100 }
|
|
101
|
|
102 // Draw current line icon if necessary
|
|
103 if (i == highlightedLine) {
|
|
104 // FIXME: use correct icon (not always topmost frame)
|
|
105 topFrameCurLine.paintIcon(this, g, LINE_NO_SPACE, rowHeight * i);
|
|
106 }
|
|
107 }
|
|
108 }
|
|
109 }
|
|
110
|
|
111 public boolean getShowLineNumbers() {
|
|
112 return showLineNumbers;
|
|
113 }
|
|
114
|
|
115 public void setShowLineNumbers(boolean val) {
|
|
116 if (val != showLineNumbers) {
|
|
117 showLineNumbers = val;
|
|
118 recomputeSize();
|
|
119 // Force re-layout
|
|
120 invalidate();
|
|
121 validate();
|
|
122 }
|
|
123 }
|
|
124
|
|
125 public void setFont(Font f) {
|
|
126 super.setFont(f);
|
|
127 rowHeight = getFontMetrics(f).getHeight();
|
|
128 recomputeSize();
|
|
129 }
|
|
130
|
|
131 void setViewport(JViewport view) {
|
|
132 this.view = view;
|
|
133 }
|
|
134
|
|
135 void recomputeSize() {
|
|
136 if (!initted) return;
|
|
137 if (view == null) return;
|
|
138 width = ICON_SIZE + 2 * LINE_NO_SPACE;
|
|
139 try {
|
|
140 int numLines = 1 + source.getLineOfOffset(source.getDocument().getEndPosition().getOffset() - 1);
|
|
141 String str = Integer.toString(numLines);
|
|
142 if (getShowLineNumbers()) {
|
|
143 // Compute width based on whether we are drawing line numbers
|
|
144 width += GraphicsUtilities.getStringWidth(str, getFontMetrics(getFont())) + LINE_NO_SPACE;
|
|
145 }
|
|
146 // FIXME: add on width for all icons (breakpoint, current line,
|
|
147 // current line in caller frame)
|
|
148 Dimension d = new Dimension(width, numLines * getFontMetrics(getFont()).getHeight());
|
|
149 setSize(d);
|
|
150 setPreferredSize(d);
|
|
151 } catch (BadLocationException e) {
|
|
152 e.printStackTrace();
|
|
153 }
|
|
154 }
|
|
155 }
|
|
156
|
|
157 public SourceCodePanel() {
|
|
158 maybeLoadIcons();
|
|
159
|
|
160 // Build user interface
|
|
161 setLayout(new BorderLayout());
|
|
162 source = new JTextArea();
|
|
163 source.setEditable(false);
|
|
164 source.getCaret().setVisible(true);
|
|
165 header = new RowHeader();
|
|
166 header.setShowLineNumbers(true);
|
|
167 JScrollPane scroller = new JScrollPane(source);
|
|
168 JViewport rowView = new JViewport();
|
|
169 rowView.setView(header);
|
|
170 header.setViewport(rowView);
|
|
171 rowView.setScrollMode(JViewport.SIMPLE_SCROLL_MODE);
|
|
172 scroller.setRowHeader(rowView);
|
|
173 add(scroller, BorderLayout.CENTER);
|
|
174 // Reset font now that header and source are present
|
|
175 setFont(getFont());
|
|
176
|
|
177 source.addFocusListener(new FocusAdapter() {
|
|
178 public void focusGained(FocusEvent e) {
|
|
179 source.getCaret().setVisible(true);
|
|
180 }
|
|
181 });
|
|
182
|
|
183 source.addKeyListener(new KeyAdapter() {
|
|
184 public void keyPressed(KeyEvent e) {
|
|
185 if (e.getKeyCode() == KeyEvent.VK_F9) {
|
|
186 int lineNo = getCurrentLineNumber();
|
|
187 // Only the debugger can figure out whether we are setting
|
|
188 // or clearing a breakpoint, since it has the debug
|
|
189 // information available and knows whether we're on a
|
|
190 // valid line
|
|
191 comm.toggleBreakpointAtLine(parent, lineNo);
|
|
192 }
|
|
193 }
|
|
194 });
|
|
195
|
|
196 }
|
|
197
|
|
198 public void setFont(Font f) {
|
|
199 super.setFont(f);
|
|
200 if (source != null) {
|
|
201 source.setFont(f);
|
|
202 }
|
|
203 if (header != null) {
|
|
204 header.setFont(f);
|
|
205 }
|
|
206 }
|
|
207
|
|
208 public boolean getShowLineNumbers() {
|
|
209 return header.getShowLineNumbers();
|
|
210 }
|
|
211
|
|
212 public void setShowLineNumbers(boolean val) {
|
|
213 header.setShowLineNumbers(val);
|
|
214 }
|
|
215
|
|
216 public boolean openFile(String filename) {
|
|
217 try {
|
|
218 this.filename = filename;
|
|
219 File file = new File(filename);
|
|
220 int len = (int) file.length();
|
|
221 StringBuffer buf = new StringBuffer(len); // Approximation
|
|
222 char[] tmp = new char[4096];
|
|
223 FileReader in = new FileReader(file);
|
|
224 int res = 0;
|
|
225 do {
|
|
226 res = in.read(tmp, 0, tmp.length);
|
|
227 if (res >= 0) {
|
|
228 buf.append(tmp, 0, res);
|
|
229 }
|
|
230 } while (res != -1);
|
|
231 in.close();
|
|
232 String text = buf.toString();
|
|
233 source.setText(text);
|
|
234 header.recomputeSize();
|
|
235 return true;
|
|
236 } catch (IOException e) {
|
|
237 return false;
|
|
238 }
|
|
239 }
|
|
240
|
|
241 public String getSourceFileName() {
|
|
242 return filename;
|
|
243 }
|
|
244
|
|
245 /** Line number is one-based */
|
|
246 public int getCurrentLineNumber() {
|
|
247 try {
|
|
248 return 1 + source.getLineOfOffset(source.getCaretPosition());
|
|
249 } catch (BadLocationException e) {
|
|
250 return 0;
|
|
251 }
|
|
252 }
|
|
253
|
|
254 /** Line number is one-based */
|
|
255 public void showLineNumber(int lineNo) {
|
|
256 try {
|
|
257 int offset = source.getLineStartOffset(lineNo - 1);
|
|
258 Rectangle rect = source.modelToView(offset);
|
|
259 if (rect == null) {
|
|
260 return;
|
|
261 }
|
|
262 source.scrollRectToVisible(rect);
|
|
263 } catch (BadLocationException e) {
|
|
264 e.printStackTrace();
|
|
265 }
|
|
266 }
|
|
267
|
|
268 /** Line number is one-based */
|
|
269 public void highlightLineNumber(int lineNo) {
|
|
270 highlightedLine = lineNo - 1;
|
|
271 }
|
|
272
|
|
273 public void showBreakpointAtLine(int lineNo) { breakpoints.add(new Integer(lineNo - 1)); repaint(); }
|
|
274 public boolean hasBreakpointAtLine(int lineNo){ return breakpoints.contains(new Integer(lineNo - 1)); }
|
|
275 public void clearBreakpointAtLine(int lineNo) { breakpoints.remove(new Integer(lineNo - 1)); repaint(); }
|
|
276 public void clearBreakpoints() { breakpoints.clear(); repaint(); }
|
|
277
|
|
278 public void setEditorCommands(EditorCommands comm, Editor parent) {
|
|
279 this.comm = comm;
|
|
280 this.parent = parent;
|
|
281 }
|
|
282
|
|
283 public void requestFocus() {
|
|
284 source.requestFocus();
|
|
285 }
|
|
286
|
|
287 //----------------------------------------------------------------------
|
|
288 // Internals only below this point
|
|
289 //
|
|
290
|
|
291 private void maybeLoadIcons() {
|
|
292 if (topFrameCurLine == null) {
|
|
293 topFrameCurLine = loadIcon("resources/arrow.png");
|
|
294 lowerFrameCurLine = loadIcon("resources/triangle.png");
|
|
295 breakpoint = loadIcon("resources/breakpoint.png");
|
|
296 }
|
|
297 }
|
|
298
|
|
299 private Icon loadIcon(String which) {
|
|
300 URL url = getClass().getResource(which);
|
|
301 return new ImageIcon(url);
|
|
302 }
|
|
303 }
|