/[svn]/gigedit/trunk/src/gigedit/scripteditor.cpp
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Contents of /gigedit/trunk/src/gigedit/scripteditor.cpp

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Revision 3206 - (show annotations) (download)
Thu May 25 10:50:08 2017 UTC (17 months, 3 weeks ago) by schoenebeck
File size: 21981 byte(s)
* Script Editor: Fixed Gtk crash while entering a variety of
  ill formed code like unterminated string literals.
* Bumped version (1.0.0.svn50).

1 /*
2 Copyright (c) 2014-2016 Christian Schoenebeck
3
4 This file is part of "gigedit" and released under the terms of the
5 GNU General Public License version 2.
6 */
7
8 #include "scripteditor.h"
9 #include "global.h"
10
11 #if !USE_LS_SCRIPTVM
12
13 static const std::string _keywords[] = {
14 "on", "end", "declare", "while", "if", "or", "and", "not", "else", "case",
15 "select", "to", "const", "polyphonic", "mod"
16 };
17 static int _keywordsSz = sizeof(_keywords) / sizeof(std::string);
18
19 static const std::string _eventNames[] = {
20 "init", "note", "release", "controller"
21 };
22 static int _eventNamesSz = sizeof(_eventNames) / sizeof(std::string);
23
24 static bool isKeyword(const Glib::ustring& s) {
25 for (int i = 0; i < _keywordsSz; ++i)
26 if (_keywords[i] == s) return true;
27 return false;
28 }
29
30 static bool isEvent(const Glib::ustring& s) {
31 for (int i = 0; i < _eventNamesSz; ++i)
32 if (_eventNames[i] == s) return true;
33 return false;
34 }
35
36 #endif // !USE_LS_SCRIPTVM
37
38 static Glib::RefPtr<Gdk::Pixbuf> createIcon(std::string name, const Glib::RefPtr<Gdk::Screen>& screen) {
39 const int targetH = 16;
40 Glib::RefPtr<Gtk::IconTheme> theme = Gtk::IconTheme::get_for_screen(screen);
41 int w = 0;
42 int h = 0; // ignored
43 Gtk::IconSize::lookup(Gtk::ICON_SIZE_SMALL_TOOLBAR, w, h);
44 if (!theme->has_icon(name))
45 return Glib::RefPtr<Gdk::Pixbuf>();
46 Glib::RefPtr<Gdk::Pixbuf> pixbuf = theme->load_icon(name, w, Gtk::ICON_LOOKUP_GENERIC_FALLBACK);
47 if (pixbuf->get_height() != targetH) {
48 pixbuf = pixbuf->scale_simple(targetH, targetH, Gdk::INTERP_BILINEAR);
49 }
50 return pixbuf;
51 }
52
53 static Glib::RefPtr<Gdk::Pixbuf> createIcon(std::vector<std::string> alternativeNames, const Glib::RefPtr<Gdk::Screen>& screen) {
54 for (int i = 0; i < alternativeNames.size(); ++i) {
55 Glib::RefPtr<Gdk::Pixbuf> buf = createIcon(alternativeNames[i], screen);
56 if (buf) return buf;
57 }
58 return Glib::RefPtr<Gdk::Pixbuf>();
59 }
60
61 ScriptEditor::ScriptEditor() :
62 m_statusLabel("", Gtk::ALIGN_START),
63 m_applyButton(Gtk::Stock::APPLY),
64 m_cancelButton(Gtk::Stock::CANCEL)
65 {
66 m_script = NULL;
67 #if USE_LS_SCRIPTVM
68 m_vm = NULL;
69 #endif
70
71 // depending on GTK version and installed themes, there may be different
72 // icons, and different names for them, so for each type of icon we use,
73 // we provide a list of possible icon names, the first one found to be
74 // installed on the local system from the list will be used and loaded for
75 // the respective purpose (so order matters in those lists)
76 //
77 // (see https://developer.gnome.org/gtkmm/stable/namespaceGtk_1_1Stock.html for
78 // available icon names)
79 std::vector<std::string> errorIconNames;
80 errorIconNames.push_back("dialog-error");
81 errorIconNames.push_back("media-record");
82 errorIconNames.push_back("process-stop");
83
84 std::vector<std::string> warningIconNames;
85 warningIconNames.push_back("dialog-warning-symbolic");
86 warningIconNames.push_back("dialog-warning");
87
88 std::vector<std::string> successIconNames;
89 successIconNames.push_back("emblem-default");
90 successIconNames.push_back("tools-check-spelling");
91
92 m_errorIcon = createIcon(errorIconNames, get_screen());
93 m_warningIcon = createIcon(warningIconNames, get_screen());
94 m_successIcon = createIcon(successIconNames, get_screen());
95
96 add(m_vbox);
97
98 m_tagTable = Gtk::TextBuffer::TagTable::create();
99
100 m_keywordTag = Gtk::TextBuffer::Tag::create();
101 m_keywordTag->property_foreground() = "#000000"; // black
102 m_keywordTag->property_weight() = PANGO_WEIGHT_BOLD;
103 m_tagTable->add(m_keywordTag);
104
105 m_eventTag = Gtk::TextBuffer::Tag::create();
106 m_eventTag->property_foreground() = "#07c0cf"; // cyan 1
107 m_eventTag->property_weight() = PANGO_WEIGHT_BOLD;
108 m_tagTable->add(m_eventTag);
109
110 m_variableTag = Gtk::TextBuffer::Tag::create();
111 m_variableTag->property_foreground() = "#790cc4"; // magenta
112 m_tagTable->add(m_variableTag);
113
114 m_functionTag = Gtk::TextBuffer::Tag::create();
115 m_functionTag->property_foreground() = "#1ba1dd"; // cyan 2
116 m_tagTable->add(m_functionTag);
117
118 m_numberTag = Gtk::TextBuffer::Tag::create();
119 m_numberTag->property_foreground() = "#c4950c"; // yellow
120 m_tagTable->add(m_numberTag);
121
122 m_stringTag = Gtk::TextBuffer::Tag::create();
123 m_stringTag->property_foreground() = "#c40c0c"; // red
124 m_tagTable->add(m_stringTag);
125
126 m_commentTag = Gtk::TextBuffer::Tag::create();
127 m_commentTag->property_foreground() = "#9c9c9c"; // gray
128 m_tagTable->add(m_commentTag);
129
130 m_preprocTag = Gtk::TextBuffer::Tag::create();
131 m_preprocTag->property_foreground() = "#2f8a33"; // green
132 m_tagTable->add(m_preprocTag);
133
134 m_errorTag = Gtk::TextBuffer::Tag::create();
135 m_errorTag->property_background() = "#ff9393"; // red
136 m_tagTable->add(m_errorTag);
137
138 m_warningTag = Gtk::TextBuffer::Tag::create();
139 m_warningTag->property_background() = "#fffd7c"; // yellow
140 m_tagTable->add(m_warningTag);
141
142 // create menu
143 m_actionGroup = Gtk::ActionGroup::create();
144 m_actionGroup->add(Gtk::Action::create("MenuScript", _("_Script")));
145 m_actionGroup->add(Gtk::Action::create("Apply", _("_Apply")),
146 Gtk::AccelKey("<control>s"),
147 sigc::mem_fun(*this, &ScriptEditor::onButtonApply));
148 m_actionGroup->add(Gtk::Action::create("Close", _("_Close")),
149 Gtk::AccelKey("<control>q"),
150 sigc::mem_fun(*this, &ScriptEditor::onButtonCancel));
151 m_actionGroup->add(Gtk::Action::create("MenuEditor", _("_Editor")));
152 m_actionGroup->add(Gtk::Action::create("ChangeFont", _("_Font Size ...")),
153 sigc::mem_fun(*this, &ScriptEditor::onMenuChangeFontSize));
154 m_uiManager = Gtk::UIManager::create();
155 m_uiManager->insert_action_group(m_actionGroup);
156 add_accel_group(m_uiManager->get_accel_group());
157 m_uiManager->add_ui_from_string(
158 "<ui>"
159 " <menubar name='MenuBar'>"
160 " <menu action='MenuScript'>"
161 " <menuitem action='Apply'/>"
162 " <separator/>"
163 " <menuitem action='Close'/>"
164 " </menu>"
165 " <menu action='MenuEditor'>"
166 " <menuitem action='ChangeFont'/>"
167 " </menu>"
168 " </menubar>"
169 "</ui>"
170 );
171
172 m_textBuffer = Gtk::TextBuffer::create(m_tagTable);
173 m_textView.set_buffer(m_textBuffer);
174 setFontSize(currentFontSize(), false);
175 m_scrolledWindow.add(m_textView);
176 m_scrolledWindow.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
177
178 Gtk::Widget* menuBar = m_uiManager->get_widget("/MenuBar");
179 m_vbox.pack_start(*menuBar, Gtk::PACK_SHRINK);
180 m_vbox.pack_start(m_scrolledWindow);
181
182 m_buttonBox.set_layout(Gtk::BUTTONBOX_END);
183 m_buttonBox.pack_start(m_applyButton);
184 m_buttonBox.pack_start(m_cancelButton);
185 m_applyButton.set_can_default();
186 m_applyButton.set_sensitive(false);
187 m_applyButton.grab_focus();
188
189 #if GTKMM_MAJOR_VERSION >= 3
190 m_statusImage.set_margin_left(6);
191 m_statusImage.set_margin_right(6);
192 #else
193 m_statusHBox.set_spacing(6);
194 #endif
195
196 m_statusHBox.pack_start(m_statusImage, Gtk::PACK_SHRINK);
197 m_statusHBox.pack_start(m_statusLabel);
198 m_statusHBox.show_all_children();
199
200 m_footerHBox.pack_start(m_statusHBox);
201 m_footerHBox.pack_start(m_buttonBox, Gtk::PACK_SHRINK);
202
203 m_vbox.pack_start(m_footerHBox, Gtk::PACK_SHRINK);
204
205 m_applyButton.signal_clicked().connect(
206 sigc::mem_fun(*this, &ScriptEditor::onButtonApply)
207 );
208
209 m_cancelButton.signal_clicked().connect(
210 sigc::mem_fun(*this, &ScriptEditor::onButtonCancel)
211 );
212
213 m_textBuffer->signal_insert().connect(
214 sigc::mem_fun(*this, &ScriptEditor::onTextInserted)
215 );
216
217 m_textBuffer->signal_erase().connect(
218 sigc::mem_fun(*this, &ScriptEditor::onTextErased)
219 );
220
221 m_textBuffer->signal_modified_changed().connect(
222 sigc::mem_fun(*this, &ScriptEditor::onModifiedChanged)
223 );
224
225 signal_hide().connect(
226 sigc::mem_fun(*this, &ScriptEditor::onWindowHide)
227 );
228
229 signal_delete_event().connect(
230 sigc::mem_fun(*this, &ScriptEditor::onWindowDelete)
231 );
232
233 show_all_children();
234 }
235
236 ScriptEditor::~ScriptEditor() {
237 printf("ScriptEditor destruct\n");
238 #if USE_LS_SCRIPTVM
239 if (m_vm) delete m_vm;
240 #endif
241 }
242
243 int ScriptEditor::currentFontSize() const {
244 #if defined(__APPLE__)
245 const int defaultFontSize = 13;
246 #else
247 const int defaultFontSize = 10;
248 #endif
249 const int settingFontSize = Settings::singleton()->scriptEditorFontSize;
250 const int fontSize = (settingFontSize > 0) ? settingFontSize : defaultFontSize;
251 return fontSize;
252 }
253
254 void ScriptEditor::setFontSize(int size, bool save) {
255 //printf("setFontSize(%d,%d)\n", size, save);
256 Pango::FontDescription fdesc;
257 fdesc.set_family("monospace");
258 fdesc.set_size(size * PANGO_SCALE);
259 #if GTKMM_MAJOR_VERSION < 3
260 m_textView.modify_font(fdesc);
261 #else
262 m_textView.override_font(fdesc);
263 #endif
264 if (save) Settings::singleton()->scriptEditorFontSize = size;
265 }
266
267 void ScriptEditor::setScript(gig::Script* script) {
268 m_script = script;
269 if (!script) {
270 set_title(_("No Script"));
271 return;
272 }
273
274 set_title(std::string(_("Instrument Script")) + " - \"" + script->Name + "\"");
275
276 std::string txt = script->GetScriptAsText();
277 //printf("text : '%s'\n", txt.c_str());
278 m_textBuffer->set_text(txt);
279 m_textBuffer->set_modified(false);
280 }
281
282 void ScriptEditor::onTextInserted(const Gtk::TextBuffer::iterator& itEnd, const Glib::ustring& txt, int length) {
283 //printf("onTextInserted()\n");
284 #if USE_LS_SCRIPTVM
285 m_textBuffer->remove_all_tags(m_textBuffer->begin(), m_textBuffer->end());
286 updateSyntaxHighlightingByVM();
287 updateParserIssuesByVM();
288 updateStatusBar();
289 #else
290 //printf("inserted %d\n", length);
291 Gtk::TextBuffer::iterator itStart = itEnd;
292 itStart.backward_chars(length);
293
294 Gtk::TextBuffer::iterator it = itStart;
295 it.backward_word_start();
296
297 bool eofReached = false;
298 while (it <= itEnd) {
299 Gtk::TextBuffer::iterator itWordStart = it;
300 if (!it.forward_word_end()) {
301 eofReached = true;
302 it = itEnd;
303 }
304
305 Glib::ustring s = m_textBuffer->get_text(itWordStart, it, false);
306 //printf("{%s}\n", s.c_str());
307 if (isKeyword(s))
308 m_textBuffer->apply_tag(m_keywordTag, itWordStart, it);
309 else if (isEvent(s)) {
310 // check if previous word is "on"
311 Gtk::TextBuffer::iterator itPreviousWordStart = itWordStart;
312 if (itPreviousWordStart.backward_word_start()) {
313 Gtk::TextBuffer::iterator itPreviousWordEnd = itPreviousWordStart;
314 itPreviousWordEnd.forward_word_end();
315 if (m_textBuffer->get_text(itPreviousWordStart, itPreviousWordEnd, false) == "on") {
316 m_textBuffer->apply_tag(m_eventTag, itWordStart, it);
317 }
318 }
319 }
320
321 if (eofReached) break;
322
323 while (!it.inside_word())
324 if (!it.forward_char())
325 goto EOF_REACHED;
326 }
327
328 EOF_REACHED:
329 ;
330
331 #endif // USE_LS_SCRIPTVM
332 }
333
334 #if USE_LS_SCRIPTVM
335
336 LinuxSampler::ScriptVM* ScriptEditor::GetScriptVM() {
337 if (!m_vm) m_vm = LinuxSampler::ScriptVMFactory::Create("gig");
338 return m_vm;
339 }
340
341 static void getIteratorsForIssue(Glib::RefPtr<Gtk::TextBuffer>& txtbuf, const LinuxSampler::ParserIssue& issue, Gtk::TextBuffer::iterator& start, Gtk::TextBuffer::iterator& end) {
342 Gtk::TextBuffer::iterator itLine =
343 txtbuf->get_iter_at_line_index(issue.firstLine - 1, 0);
344 const int charsInLine = itLine.get_bytes_in_line();
345 start = txtbuf->get_iter_at_line_index(
346 issue.firstLine - 1,
347 // check we are not getting past the end of the line here, otherwise Gtk crashes
348 issue.firstColumn - 1 < charsInLine ? issue.firstColumn - 1 : charsInLine - 1
349 );
350 end = start;
351 end.forward_lines(issue.lastLine - issue.firstLine);
352 end.forward_chars(
353 (issue.lastLine != issue.firstLine)
354 ? issue.lastColumn - 1
355 : issue.lastColumn - issue.firstColumn + 1
356 );
357 }
358
359 static void applyCodeTag(Glib::RefPtr<Gtk::TextBuffer>& txtbuf, const LinuxSampler::VMSourceToken& token, Glib::RefPtr<Gtk::TextBuffer::Tag>& tag) {
360 Gtk::TextBuffer::iterator itLine =
361 txtbuf->get_iter_at_line_index(token.firstLine(), 0);
362 const int charsInLine = itLine.get_bytes_in_line();
363 Gtk::TextBuffer::iterator itStart = txtbuf->get_iter_at_line_index(
364 token.firstLine(),
365 // check we are not getting past the end of the line here, otherwise Gtk crashes
366 token.firstColumn() < charsInLine ? token.firstColumn() : charsInLine - 1
367 );
368 Gtk::TextBuffer::iterator itEnd = itStart;
369 const int length = token.text().length();
370 itEnd.forward_chars(length);
371 txtbuf->apply_tag(tag, itStart, itEnd);
372 }
373
374 static void applyCodeTag(Glib::RefPtr<Gtk::TextBuffer>& txtbuf, const LinuxSampler::ParserIssue& issue, Glib::RefPtr<Gtk::TextBuffer::Tag>& tag) {
375 Gtk::TextBuffer::iterator itStart, itEnd;
376 getIteratorsForIssue(txtbuf, issue, itStart, itEnd);
377 txtbuf->apply_tag(tag, itStart, itEnd);
378 }
379
380 void ScriptEditor::updateSyntaxHighlightingByVM() {
381 GetScriptVM();
382 const std::string s = m_textBuffer->get_text();
383 if (s.empty()) return;
384 std::vector<LinuxSampler::VMSourceToken> tokens = m_vm->syntaxHighlighting(s);
385
386 for (int i = 0; i < tokens.size(); ++i) {
387 const LinuxSampler::VMSourceToken& token = tokens[i];
388
389 if (token.isKeyword()) {
390 applyCodeTag(m_textBuffer, token, m_keywordTag);
391 } else if (token.isVariableName()) {
392 applyCodeTag(m_textBuffer, token, m_variableTag);
393 } else if (token.isIdentifier()) {
394 if (token.isEventHandlerName()) {
395 applyCodeTag(m_textBuffer, token, m_eventTag);
396 } else { // a function ...
397 applyCodeTag(m_textBuffer, token, m_functionTag);
398 }
399 } else if (token.isNumberLiteral()) {
400 applyCodeTag(m_textBuffer, token, m_numberTag);
401 } else if (token.isStringLiteral()) {
402 applyCodeTag(m_textBuffer, token, m_stringTag);
403 } else if (token.isComment()) {
404 applyCodeTag(m_textBuffer, token, m_commentTag);
405 } else if (token.isPreprocessor()) {
406 applyCodeTag(m_textBuffer, token, m_preprocTag);
407 } else if (token.isNewLine()) {
408 }
409 }
410 }
411
412 void ScriptEditor::updateParserIssuesByVM() {
413 GetScriptVM();
414 const std::string s = m_textBuffer->get_text();
415 LinuxSampler::VMParserContext* parserContext = m_vm->loadScript(s);
416 m_issues = parserContext->issues();
417 m_errors = parserContext->errors();
418 m_warnings = parserContext->warnings();
419
420 if (!s.empty()) {
421 for (int i = 0; i < m_issues.size(); ++i) {
422 const LinuxSampler::ParserIssue& issue = m_issues[i];
423
424 if (issue.isErr()) {
425 applyCodeTag(m_textBuffer, issue, m_errorTag);
426 } else if (issue.isWrn()) {
427 applyCodeTag(m_textBuffer, issue, m_warningTag);
428 }
429 }
430 }
431
432 delete parserContext;
433 }
434
435 void ScriptEditor::updateIssueTooltip(GdkEventMotion* e) {
436 int x, y;
437 m_textView.window_to_buffer_coords(Gtk::TEXT_WINDOW_TEXT, int(e->x), int(e->y), x, y);
438
439 Gtk::TextBuffer::iterator it;
440 m_textView.get_iter_at_location(it, x, y);
441
442 const int line = it.get_line();
443 const int column = it.get_line_offset();
444
445 //printf("mouse at l%d c%d\n", line, column);
446
447 for (int i = 0; i < m_issues.size(); ++i) {
448 const LinuxSampler::ParserIssue& issue = m_issues[i];
449 const int firstLine = issue.firstLine - 1;
450 const int firstColumn = issue.firstColumn - 1;
451 const int lastLine = issue.lastLine - 1;
452 const int lastColumn = issue.lastColumn - 1;
453 if (firstLine <= line && line <= lastLine &&
454 (firstLine != line || firstColumn <= column) &&
455 (lastLine != line || lastColumn >= column))
456 {
457 m_textView.set_tooltip_markup(
458 (issue.isErr() ? "<span foreground=\"#ff9393\">ERROR:</span> " : "<span foreground=\"#c4950c\">Warning:</span> ") +
459 issue.txt
460 );
461 return;
462 }
463 }
464
465 m_textView.set_tooltip_markup("");
466 }
467
468 static std::string warningsCountTxt(const std::vector<LinuxSampler::ParserIssue> warnings) {
469 std::string txt = "<span foreground=\"#c4950c\">" + ToString(warnings.size());
470 txt += (warnings.size() == 1) ? " Warning" : " Warnings";
471 txt += "</span>";
472 return txt;
473 }
474
475 static std::string errorsCountTxt(const std::vector<LinuxSampler::ParserIssue> errors) {
476 std::string txt = "<span foreground=\"#c40c0c\">" + ToString(errors.size());
477 txt += (errors.size() == 1) ? " Error" : " Errors";
478 txt += "</span>";
479 return txt;
480 }
481
482 void ScriptEditor::updateStatusBar() {
483 // update status text
484 std::string txt;
485 if (m_issues.empty()) {
486 txt = "No issues with this script.";
487 } else {
488 const char* txtWontLoad = ". Sampler won't load instruments using this script!";
489 txt = "There ";
490 txt += (m_errors.size() <= 1 && m_warnings.size() <= 1) ? "is " : "are ";
491 if (m_errors.empty()) {
492 txt += warningsCountTxt(m_warnings) + ". Script will load, but might not behave as expected!";
493 } else if (m_warnings.empty()) {
494 txt += errorsCountTxt(m_errors) + txtWontLoad;
495 } else {
496 txt += errorsCountTxt(m_errors) + " and " +
497 warningsCountTxt(m_warnings) + txtWontLoad;
498 }
499 }
500 m_statusLabel.set_markup(txt);
501
502 // update status icon
503 m_statusImage.set(
504 m_issues.empty() ? m_successIcon : !m_errors.empty() ? m_errorIcon : m_warningIcon
505 );
506 }
507
508 #endif // USE_LS_SCRIPTVM
509
510 void ScriptEditor::onTextErased(const Gtk::TextBuffer::iterator& itStart, const Gtk::TextBuffer::iterator& itEnd) {
511 //printf("erased\n");
512 #if USE_LS_SCRIPTVM
513 m_textBuffer->remove_all_tags(m_textBuffer->begin(), m_textBuffer->end());
514 updateSyntaxHighlightingByVM();
515 updateParserIssuesByVM();
516 updateStatusBar();
517 #else
518 Gtk::TextBuffer::iterator itStart2 = itStart;
519 if (itStart2.inside_word() || itStart2.ends_word())
520 itStart2.backward_word_start();
521
522 Gtk::TextBuffer::iterator itEnd2 = itEnd;
523 if (itEnd2.inside_word()) itEnd2.forward_word_end();
524
525 m_textBuffer->remove_all_tags(itStart2, itEnd2);
526 #endif // USE_LS_SCRIPTVM
527 }
528
529 bool ScriptEditor::on_motion_notify_event(GdkEventMotion* e) {
530 #if USE_LS_SCRIPTVM
531 //TODO: event throttling would be a good idea here
532 updateIssueTooltip(e);
533 #endif
534 return ManagedWindow::on_motion_notify_event(e);
535 }
536
537 void ScriptEditor::onMenuChangeFontSize() {
538 //TODO: for GTKMM >= 3.2 class Gtk::FontChooser could be used instead
539 Gtk::Dialog dialog(_("Font Size"), true /*modal*/);
540 Gtk::HBox hbox;
541 hbox.set_spacing(6);
542
543 Gtk::Label label(_("Editor's Font Size:"), Gtk::ALIGN_START);
544 hbox.pack_start(label, Gtk::PACK_SHRINK);
545
546 Gtk::SpinButton spinButton;
547 spinButton.set_range(4, 80);
548 spinButton.set_increments(1, 10);
549 spinButton.set_value(currentFontSize());
550 hbox.pack_start(spinButton);
551
552 dialog.get_vbox()->pack_start(hbox);
553 dialog.add_button(_("_OK"), 0);
554 dialog.add_button(_("_Cancel"), 1);
555
556 dialog.show_all_children();
557
558 if (!dialog.run()) { // OK selected ...
559 const int newFontSize = spinButton.get_value_as_int();
560 if (newFontSize >= 4)
561 setFontSize(newFontSize, true);
562 }
563 }
564
565 bool ScriptEditor::onWindowDelete(GdkEventAny* e) {
566 //printf("onWindowDelete\n");
567
568 if (!isModified()) return false; // propagate event further (which will close this window)
569
570 gchar* msg = g_strdup_printf(_("Apply changes to instrument script \"%s\" before closing?"),
571 m_script->Name.c_str());
572 Gtk::MessageDialog dialog(*this, msg, false, Gtk::MESSAGE_WARNING, Gtk::BUTTONS_NONE);
573 g_free(msg);
574 dialog.set_secondary_text(_("If you close without applying, your changes will be lost."));
575 dialog.add_button(_("Close _Without Applying"), Gtk::RESPONSE_NO);
576 dialog.add_button(_("_Cancel"), Gtk::RESPONSE_CANCEL);
577 dialog.add_button(_("_Apply"), Gtk::RESPONSE_YES);
578 dialog.set_default_response(Gtk::RESPONSE_YES);
579 int response = dialog.run();
580 dialog.hide();
581
582 // user decided to close script editor without saving
583 if (response == Gtk::RESPONSE_NO)
584 return false; // propagate event further (which will close this window)
585
586 // user cancelled dialog, thus don't close script editor
587 if (response == Gtk::RESPONSE_CANCEL) {
588 show();
589 return true; // drop event (prevents closing this window)
590 }
591
592 // user wants to apply the changes, afterwards close window
593 if (response == Gtk::RESPONSE_YES) {
594 onButtonApply();
595 return false; // propagate event further (which will close this window)
596 }
597
598 // should never ever make it to this point actually
599 return false;
600 }
601
602 bool ScriptEditor::isModified() const {
603 return m_textBuffer->get_modified();
604 }
605
606 void ScriptEditor::onModifiedChanged() {
607 m_applyButton.set_sensitive(isModified());
608 #if USE_LS_SCRIPTVM
609 updateStatusBar();
610 #endif
611 }
612
613 void ScriptEditor::onButtonCancel() {
614 bool dropEvent = onWindowDelete(NULL);
615 if (dropEvent) return;
616 hide();
617 }
618
619 void ScriptEditor::onButtonApply() {
620 signal_script_to_be_changed.emit(m_script);
621 m_script->SetScriptAsText(m_textBuffer->get_text());
622 signal_script_changed.emit(m_script);
623 m_textBuffer->set_modified(false);
624 }
625
626 void ScriptEditor::onWindowHide() {
627 delete this; // this is the end, my friend
628 }

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