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1 package org.joshy.html.app.browser;
2
3 import java.io.File  ;
4 import java.net.*;
5 import java.awt.*;
6 import java.awt.event.*;
7 import javax.swing.*;
8 import org.joshy.html.*;
9 import org.joshy.html.swing.*;
10 import org.joshy.u;
11 import org.joshy.x;
12 import java.util.logging.*;
13 import org.xml.sax.*;
14 import javax.xml.parsers.*;
15 import org.w3c.dom.*;
16
17 public class BrowserStartup {
18 public static Logger logger = Logger.getLogger("app.browser");
19 BrowserPanel panel;
20 BrowserMenuBar menu;
21 JFrame frame;
22 protected HistoryManager history;
23
24 public BrowserStartup() {
25 logger.info("starting up");
26 history = new HistoryManager();
27 }
28
29 public void init() {
30 logger.info("creating UI");
31 panel = new BrowserPanel(this);
32 panel.init();
33 panel.createLayout();
34 panel.createActions();
35
36 menu = new BrowserMenuBar(this);
37 menu.init();
38 menu.createLayout();
39 menu.createActions();
40 }
41
42 public static void main(String [] args) {
43 JFrame frame = new JFrame();
44 BrowserStartup bs = new BrowserStartup();
45 bs.frame = frame;
46 bs.init();
47 frame.setJMenuBar(bs.menu);
48 frame.getContentPane().add(bs.panel);
49 frame.pack();
50 frame.setSize(500,600);
51 frame.show();
52 }
53
54 }
55
56 class BrowserMenuBar extends JMenuBar {
57 JMenu file;
58 JMenuItem quit;
59 JMenuItem open_file;
60 JMenu view;
61 JMenuItem view_source;
62 JMenu debug;
63 JMenu demos;
64 BrowserStartup root;
65
66 public BrowserMenuBar(BrowserStartup root) {
67 this.root = root;
68 }
69
70 public void init() {
71 file = new JMenu("File");
72 open_file = new JMenuItem("Open File...");
73 quit = new JMenuItem("Quit");
74 debug = new JMenu("Debug");
75 demos = new JMenu("Demos");
76 view = new JMenu("View");
77 view_source = new JMenuItem("Page Source");
78 }
79
80 public void createLayout() {
81 file.add(open_file);
82 file.add(quit);
83 add(file);
84
85 view.add(view_source);
86 add(view);
87
88 demos.add(new LoadAction("Borders","demo:demos/border.xhtml"));
89 demos.add(new LoadAction("Backgrounds","demo:demos/background.xhtml"));
90 demos.add(new LoadAction("Paragraph","demo:demos/paragraph.xhtml"));
91 demos.add(new LoadAction("Line Breaking","demo:demos/breaking.xhtml"));
92 demos.add(new LoadAction("Forms","demo:demos/forms.xhtml"));
93 demos.add(new LoadAction("Headers","demo:demos/header.xhtml"));
94 demos.add(new LoadAction("Nested Divs","demo:demos/nested.xhtml"));
95 demos.add(new LoadAction("Selectors","demo:demos/selectors.xhtml"));
96 demos.add(new LoadAction("Images","demo:demos/image.xhtml"));
97
98 add(demos);
99
100 debug.add(new AbstractAction("draw boxes") {
101 public void actionPerformed(ActionEvent evt) {
102 root.panel.view.c.debug_draw_boxes = !root.panel.view.c.debug_draw_boxes;
103 root.panel.view.repaint();
104 }
105 });
106
107 debug.add(new AbstractAction("draw line boxes") {
108 public void actionPerformed(ActionEvent evt) {
109 root.panel.view.c.debug_draw_line_boxes = !root.panel.view.c.debug_draw_line_boxes;
110 root.panel.view.repaint();
111 }
112 });
113
114 debug.add(new AbstractAction("draw inline boxes") {
115 public void actionPerformed(ActionEvent evt) {
116 root.panel.view.c.debug_draw_inline_boxes = !root.panel.view.c.debug_draw_inline_boxes;
117 root.panel.view.repaint();
118 }
119 });
120
121 debug.add(new AbstractAction("DOM tree inspector") {
122 public void actionPerformed(ActionEvent evt) {
123 JFrame frame = new JFrame();
124 frame.getContentPane().add(new DOMInspector(root.panel.view.doc));
125 frame.pack();
126 frame.setSize(250,500);
127 frame.show();
128 }
129 });
130
131
132 add(debug);
133 }
134
135 public void createActions() {
136 open_file.addActionListener(new ActionListener() {
137 public void actionPerformed(ActionEvent evt) {
138 try {
139 FileDialog fd = new FileDialog(root.frame,"Open a local file",FileDialog.LOAD);
140 fd.show();
141 String file = fd.getDirectory() + fd.getFile();
142 root.panel.loadPage(file);
143 } catch (Exception ex) {
144 logger.info("error:" + ex);
145 }
146 }
147 });
148 quit.addActionListener(new ActionListener() {
149 public void actionPerformed(ActionEvent evt) {
150 System.exit(0);
151 }
152 });
153 }
154
155 public static Logger logger = Logger.getLogger("app.browser");
156
157 class LoadAction extends AbstractAction {
158 protected String url;
159 public LoadAction(String name, String url) {
160 super(name);
161 this.url = url;
162 }
163
164 public void actionPerformed(ActionEvent evt) {
165 try {
166 root.panel.loadPage(url);
167 } catch (Exception ex) {
168 u.p(ex);
169 }
170 }
171
172 }
173
174 }
175
176
177 class BrowserPanel extends JPanel {
178 public static Logger logger = Logger.getLogger("app.browser");
179 JButton forward;
180 JButton backward;
181 JButton stop;
182 JButton reload;
183 JTextField url;
184 JLabel status;
185 HTMLPanel view;
186 JScrollPane scroll;
187 BrowserStartup root;
188
189 public BrowserPanel(BrowserStartup root) {
190 this.root = root;
191 }
192
193
194 public void init() {
195 forward = new JButton("Forward");
196 backward = new JButton("Back");
197 stop = new JButton("Stop");
198 reload = new JButton("Reload");
199 url = new JTextField();
200 view = new HTMLPanel();
201 status = new JLabel("Status");
202
203 int text_width = 200;
204 view.setPreferredSize(new Dimension(text_width,text_width));
205 scroll = new JScrollPane(view);
206 scroll.setVerticalScrollBarPolicy(scroll.VERTICAL_SCROLLBAR_ALWAYS);
207 scroll.setHorizontalScrollBarPolicy(scroll.HORIZONTAL_SCROLLBAR_ALWAYS);
208 scroll.setPreferredSize(new Dimension(text_width,text_width));
209 view.setViewportComponent(scroll);
210 view.setJScrollPane(scroll);
211
212 }
213
214 public void createLayout() {
215 GridBagLayout gbl = new GridBagLayout();
216 GridBagConstraints c = new GridBagConstraints();
217 setLayout(gbl);
218
219 c.gridx = 0; c.gridy = 0;
220 c.weightx = c.weighty = 0.0;
221 gbl.setConstraints(backward,c);
222 add(backward);
223
224 c.gridx++;
225 gbl.setConstraints(forward,c);
226 add(forward);
227
228 c.gridx++;
229 gbl.setConstraints(stop,c);
230 add(stop);
231
232 c.gridx++;
233 gbl.setConstraints(reload,c);
234 add(reload);
235
236 c.gridx++;
237 c.fill = c.HORIZONTAL;
238 c.weightx = 10.0;
239 gbl.setConstraints(url,c);
240 add(url);
241
242 c.gridx = 0;
243 c.gridy++;
244 c.fill = c.BOTH;
245 c.gridwidth = 5;
246 c.weightx = c.weighty = 10.0;
247 gbl.setConstraints(scroll,c);
248 add(scroll);
249
250 c.gridx = 0;
251 c.gridy++;
252 c.fill = c.HORIZONTAL;
253 c.weighty = 0.1;
254 gbl.setConstraints(status,c);
255 add(status);
256
257 }
258
259 String current_url = null;
260
261
262
263 public void goForward() {
264 root.history.goNext();
265 view.setDocument(root.history.getCurrentDocument(),root.history.getCurrentURL());
266 updateButtons();
268 }
269
270 public void goBack() throws Exception {
271 root.history.goPrevious();
272 view.setDocument(root.history.getCurrentDocument(),root.history.getCurrentURL());
273 updateButtons();
275 }
276
277 public void reloadPage() throws Exception {
278 logger.info("Reloading Page: ");
279 if(current_url != null) {
280 loadPage(current_url);
281 }
282 }
283
284
285 public void setStatus(String txt) {
286 status.setText(txt);
287 }
288
289 public void createActions() {
290 backward.addActionListener(new ActionListener() {
291 public void actionPerformed(ActionEvent evt) {
292 try {
293 goBack();
294 view.repaint();
295 } catch (Exception ex) {
296 u.p(ex);
297 }
298 }
299 });
300 forward.addActionListener(new ActionListener() {
301 public void actionPerformed(ActionEvent evt) {
302 try {
303 goForward();
304 view.repaint();
305 } catch (Exception ex) {
306 u.p(ex);
307 }
308 }
309 });
310
311
312
313 reload.addActionListener(new ActionListener() {
314 public void actionPerformed(ActionEvent evt) {
315 try {
316 reloadPage();
317 view.repaint();
318 } catch (Exception ex) {
319 u.p(ex);
320 }
321 }
322 });
323
324 url.addActionListener(new ActionListener() {
325 public void actionPerformed(ActionEvent evt) {
326 try {
327 String url_text = url.getText();
328 loadPage(url_text);
329 view.repaint();
330 } catch (Exception ex) {
331 u.p(ex);
332 }
333 }
334 });
335
336 updateButtons();
337 }
338
339 protected void updateButtons() {
340 if(root.history.hasPrevious()) {
341 backward.setEnabled(true);
342 } else {
343 backward.setEnabled(false);
344 }
345 if(root.history.hasNext()) {
346 forward.setEnabled(true);
347 } else {
348 forward.setEnabled(false);
349 }
350 }
351
352 public void loadPage(Document doc, URL url) throws Exception {
353 view.setDocument(doc,url);
354 root.history.goNewDocument(doc);
355 updateButtons();
356 }
357 public void loadPage(String url_text) throws Exception {
358 logger.info("Loading Page: " + url_text);
359 current_url = url_text;
360
361
362 DocumentBuilderFactory fact = DocumentBuilderFactory.newInstance();
363 DocumentBuilder builder = fact.newDocumentBuilder();
364 builder.setErrorHandler(new ErrorHandler() {
365 public void warning(SAXParseException ex) throws SAXException {
366 logger.info("warning: " + ex);
367 }
368 public void error(SAXParseException ex) throws SAXException {
369 logger.info("error: " + ex);
370 logger.info("error on line: " + ex.getLineNumber() + " column: " + ex.getColumnNumber());
371 setStatus("Error Loading Document");
372 }
373 public void fatalError(SAXParseException ex) throws SAXException {
374 logger.info("fatal error: " + ex);
375 logger.info("error on line: " + ex.getLineNumber() + " column: " + ex.getColumnNumber());
376 setStatus("Error Loading Document");
377 }
378 });
379
380 Document doc = null;
381
382
383 URL ref = null;
384
385 if(url_text.startsWith("demo:")) {
386 DemoMarker marker = new DemoMarker();
387 u.p("marker = " + marker);
388 String short_url = url_text.substring(5);
389 u.p("sub = " + short_url);
390 if(!short_url.startsWith("/")) {
391 short_url = "/" + short_url;
392 }
393 doc = builder.parse(marker.getClass().getResourceAsStream(short_url));
394 ref = marker.getClass().getResource(short_url);
395 } else if(url_text.startsWith("http")) {
396 doc = builder.parse(url_text);
397 ref = new File (url_text).toURL();
398 } else {
399 doc = builder.parse(url_text);
400 ref = new File (url_text).toURL();
401 }
402 loadPage(doc,ref);
403
404 setStatus("Successfully loaded: " + url_text);
405 }
406 }
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