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fix file-insert crash. update problem remaining now.
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1 /**
2  * \file BufferView_pimpl.C
3  * Copyright 2002 the LyX Team
4  * Read the file COPYING
5  *
6  * \author Lars Gullik Bjønnes
7  * \author various
8  */
9
10 #include <config.h>
11
12 #include "BufferView_pimpl.h"
13 #include "bufferlist.h"
14 #include "buffer.h"
15 #include "buffer_funcs.h"
16 #include "bufferview_funcs.h"
17 #include "lfuns.h"
18 #include "debug.h"
19 #include "factory.h"
20 #include "FloatList.h"
21 #include "funcrequest.h"
22 #include "gettext.h"
23 #include "intl.h"
24 #include "iterators.h"
25 #include "Lsstream.h"
26 #include "lyx_cb.h" // added for Dispatch functions
27 #include "lyx_main.h"
28 #include "lyxfind.h"
29 #include "lyxfunc.h"
30 #include "lyxtext.h"
31 #include "lyxrc.h"
32 #include "lyxrow.h"
33 #include "lastfiles.h"
34 #include "paragraph.h"
35 #include "ParagraphParameters.h"
36 #include "TextCache.h"
37 #include "undo_funcs.h"
38
39 #include "insets/insetfloatlist.h"
40 #include "insets/insetgraphics.h"
41 #include "insets/insetinclude.h"
42 #include "insets/insetref.h"
43 #include "insets/insettext.h"
44
45 #include "frontends/Alert.h"
46 #include "frontends/Dialogs.h"
47 #include "frontends/FileDialog.h"
48 #include "frontends/LyXView.h"
49 #include "frontends/LyXScreenFactory.h"
50 #include "frontends/mouse_state.h"
51 #include "frontends/screen.h"
52 #include "frontends/WorkArea.h"
53 #include "frontends/WorkAreaFactory.h"
54
55 #include "mathed/formulabase.h"
56
57 #include "graphics/Previews.h"
58
59 #include "support/LAssert.h"
60 #include "support/tostr.h"
61 #include "support/filetools.h"
62
63 #include <boost/bind.hpp>
64 #include <boost/signals/connection.hpp>
65
66 #include <unistd.h>
67 #include <sys/wait.h>
68
69
70 using std::vector;
71 using std::find_if;
72 using std::find;
73 using std::pair;
74 using std::endl;
75 using std::make_pair;
76 using std::min;
77
78 using lyx::pos_type;
79 using namespace lyx::support;
80 using namespace bv_funcs;
81
82 extern BufferList bufferlist;
83
84
85 namespace {
86
87 unsigned int const saved_positions_num = 20;
88
89 // All the below connection objects are needed because of a bug in some
90 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
91 // to these connections we avoid a segfault upon startup, and also at exit.
92 // (Lgb)
93
94 boost::signals::connection dispatchcon;
95 boost::signals::connection timecon;
96 boost::signals::connection doccon;
97 boost::signals::connection resizecon;
98 boost::signals::connection kpresscon;
99 boost::signals::connection selectioncon;
100 boost::signals::connection lostcon;
101
102
103 } // anon namespace
104
105
106 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
107              int xpos, int ypos, int width, int height)
108         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
109           using_xterm_cursor(false)
110 {
111         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
112         screen_.reset(LyXScreenFactory::create(workarea()));
113
114         // Setup the signals
115         doccon = workarea().scrollDocView
116                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
117         resizecon = workarea().workAreaResize
118                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
119         dispatchcon = workarea().dispatch
120                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
121         kpresscon = workarea().workAreaKeyPress
122                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
123         selectioncon = workarea().selectionRequested
124                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
125         lostcon = workarea().selectionLost
126                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
127
128         timecon = cursor_timeout.timeout
129                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
130         cursor_timeout.start();
131         saved_positions.resize(saved_positions_num);
132 }
133
134
135 void BufferView::Pimpl::addError(ErrorItem const & ei)
136 {
137         errorlist_.push_back(ei);
138 }
139
140
141 void BufferView::Pimpl::connectBuffer(Buffer & buf)
142 {
143         if (errorConnection_.connected())
144                 disconnectBuffer();
145
146         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
147         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
148         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
149 }
150
151
152 void BufferView::Pimpl::disconnectBuffer()
153 {
154         errorConnection_.disconnect();
155         messageConnection_.disconnect();
156         busyConnection_.disconnect();
157 }
158
159
160 bool BufferView::Pimpl::newFile(string const & filename, 
161                                 string const & tname,
162                                 bool isNamed)
163 {
164         Buffer * b = ::newFile(filename, tname, isNamed);
165         buffer(b);
166         return true;
167 }
168
169
170 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
171 {
172         // get absolute path of file and add ".lyx" to the filename if
173         // necessary
174         string s = FileSearch(string(), filename, "lyx");
175         if (s.empty()) {
176                 s = filename;
177         }
178
179         // file already open?
180         if (bufferlist.exists(s)) {
181                 string const file = MakeDisplayPath(s, 20);
182                 string text = bformat(_("The document %1$s is already "
183                                         "loaded.\n\nDo you want to revert "
184                                         "to the saved version?"), file);
185                 int const ret = Alert::prompt(_("Revert to saved document?"),
186                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
187
188                 if (ret != 0) {
189                         buffer(bufferlist.getBuffer(s));
190                         return true;
191                 } else {
192                         // FIXME: should be LFUN_REVERT
193                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
194                                 return false;
195                         // Fall through to new load. (Asger)
196                 }
197         }
198         Buffer * b = bufferlist.newBuffer(s);
199
200         connectBuffer(*b);
201
202         if (! ::loadLyXFile(b, s)) {
203                 bufferlist.release(b);
204                 string text = bformat(_("The document %1$s does not yet "
205                                         "exist.\n\nDo you want to create "
206                                         "a new document?"), s);
207                 int const ret = Alert::prompt(_("Create new document?"),
208                          text, 0, 1, _("&Create"), _("Cancel"));
209
210                 if (ret != 0)
211                         return false;
212         }
213
214         buffer(b);
215
216         if (tolastfiles)
217                 lastfiles->newFile(b->fileName());
218
219         bv_->showErrorList(_("Parse"));
220
221         return true;
222 }
223
224
225 WorkArea & BufferView::Pimpl::workarea() const
226 {
227         return *workarea_.get();
228 }
229
230
231 LyXScreen & BufferView::Pimpl::screen() const
232 {
233         return *screen_.get();
234 }
235
236
237 Painter & BufferView::Pimpl::painter() const
238 {
239         return workarea().getPainter();
240 }
241
242
243 void BufferView::Pimpl::buffer(Buffer * b)
244 {
245         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
246                             << b << ')' << endl;
247         if (buffer_) {
248                 disconnectBuffer();
249                 buffer_->delUser(bv_);
250
251                 // Put the old text into the TextCache, but
252                 // only if the buffer is still loaded.
253                 // Also set the owner of the test to 0
254                 //              bv_->text->owner(0);
255                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
256                 if (lyxerr.debugging())
257                         textcache.show(lyxerr, "BufferView::buffer");
258
259                 bv_->text = 0;
260         }
261
262         // set current buffer
263         buffer_ = b;
264
265         // if we're quitting lyx, don't bother updating stuff
266         if (quitting)
267                 return;
268
269         // if we are closing the buffer, use the first buffer as current
270         if (!buffer_) {
271                 buffer_ = bufferlist.first();
272         }
273
274         if (buffer_) {
275                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
276                 buffer_->addUser(bv_);
277                 connectBuffer(*buffer_);
278
279                 // If we don't have a text object for this, we make one
280                 if (bv_->text == 0) {
281                         resizeCurrentBuffer();
282                 }
283
284                 // FIXME: needed when ?
285                 bv_->text->top_y(screen().topCursorVisible(bv_->text));
286
287                 // Buffer-dependent dialogs should be updated or
288                 // hidden. This should go here because some dialogs (eg ToC)
289                 // require bv_->text.
290                 owner_->getDialogs().updateBufferDependent(true);
291         } else {
292                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
293                 owner_->getDialogs().hideBufferDependent();
294
295                 // Also remove all remaining text's from the testcache.
296                 // (there should not be any!) (if there is any it is a
297                 // bug!)
298                 if (lyxerr.debugging())
299                         textcache.show(lyxerr, "buffer delete all");
300                 textcache.clear();
301         }
302
303         repaint();
304         updateScrollbar();
305         owner_->updateMenubar();
306         owner_->updateToolbar();
307         owner_->updateLayoutChoice();
308         owner_->updateWindowTitle();
309
310         if (buffer_) {
311                 // Don't forget to update the Layout
312                 string const layoutname =
313                         bv_->text->cursor.par()->layout()->name();
314                 owner_->setLayout(layoutname);
315         }
316
317         if (grfx::Previews::activated() && buffer_)
318                 grfx::Previews::get().generateBufferPreviews(*buffer_);
319 }
320
321
322 bool BufferView::Pimpl::fitCursor()
323 {
324         bool ret;
325
326         if (bv_->theLockingInset()) {
327                 bv_->theLockingInset()->fitInsetCursor(bv_);
328                 ret = true;
329         } else {
330                 ret = screen().fitCursor(bv_->text, bv_);
331         }
332
333         dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
334
335         // We need to always update, in case we did a
336         // paste and we stayed anchored to a row, but
337         // the actual height of the doc changed ...
338         updateScrollbar();
339         return ret;
340 }
341
342
343 void BufferView::Pimpl::redoCurrentBuffer()
344 {
345         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
346         if (buffer_ && bv_->text) {
347                 resizeCurrentBuffer();
348                 updateScrollbar();
349                 owner_->updateLayoutChoice();
350                 repaint();
351         }
352 }
353
354
355 int BufferView::Pimpl::resizeCurrentBuffer()
356 {
357         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
358
359         ParagraphList::iterator par;
360         ParagraphList::iterator selstartpar;
361         ParagraphList::iterator selendpar;
362         UpdatableInset * the_locking_inset = 0;
363
364         pos_type pos = 0;
365         pos_type selstartpos = 0;
366         pos_type selendpos = 0;
367         bool selection = false;
368         bool mark_set  = false;
369
370         owner_->busy(true);
371
372         owner_->message(_("Formatting document..."));
373
374         if (bv_->text) {
375                 par = bv_->text->cursor.par();
376                 pos = bv_->text->cursor.pos();
377                 selstartpar = bv_->text->selection.start.par();
378                 selstartpos = bv_->text->selection.start.pos();
379                 selendpar = bv_->text->selection.end.par();
380                 selendpos = bv_->text->selection.end.pos();
381                 selection = bv_->text->selection.set();
382                 mark_set = bv_->text->selection.mark();
383                 the_locking_inset = bv_->theLockingInset();
384                 buffer_->resizeInsets(bv_);
385                 bv_->text->init(bv_);
386         } else {
387                 lyxerr << "text not available!\n";
388                 // See if we have a text in TextCache that fits
389                 // the new buffer_ with the correct width.
390                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
391                 if (bv_->text) {
392                         lyxerr << "text in cache!\n";
393                         if (lyxerr.debugging()) {
394                                 lyxerr << "Found a LyXText that fits:\n";
395                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
396                         }
397                         // Set the owner of the newly found text
398                         //      bv_->text->owner(bv_);
399                         if (lyxerr.debugging())
400                                 textcache.show(lyxerr, "resizeCurrentBuffer");
401
402                         buffer_->resizeInsets(bv_);
403                 } else {
404                         lyxerr << "no text in cache!\n";
405                         bv_->text = new LyXText(bv_);
406                         buffer_->resizeInsets(bv_);
407                         bv_->text->init(bv_);
408                 }
409
410                 par = bv_->text->ownerParagraphs().end();
411                 selstartpar = bv_->text->ownerParagraphs().end();
412                 selendpar = bv_->text->ownerParagraphs().end();
413         }
414
415         if (par != bv_->text->ownerParagraphs().end()) {
416                 bv_->text->selection.set(true);
417                 // At this point just to avoid the Delete-Empty-Paragraph-
418                 // Mechanism when setting the cursor.
419                 bv_->text->selection.mark(mark_set);
420                 if (selection) {
421                         bv_->text->setCursor(selstartpar, selstartpos);
422                         bv_->text->selection.cursor = bv_->text->cursor;
423                         bv_->text->setCursor(selendpar, selendpos);
424                         bv_->text->setSelection();
425                         bv_->text->setCursor(par, pos);
426                 } else {
427                         bv_->text->setCursor(par, pos);
428                         bv_->text->selection.cursor = bv_->text->cursor;
429                         bv_->text->selection.set(false);
430                 }
431                 // remake the inset locking
432                 bv_->theLockingInset(the_locking_inset);
433         }
434
435         bv_->text->top_y(screen().topCursorVisible(bv_->text));
436
437         switchKeyMap();
438         owner_->busy(false);
439
440         // reset the "Formatting..." message
441         owner_->clearMessage();
442
443         updateScrollbar();
444
445         return 0;
446 }
447
448
449 void BufferView::Pimpl::repaint()
450 {
451         // Regenerate the screen.
452         screen().redraw(bv_->text, bv_);
453 }
454
455
456 void BufferView::Pimpl::updateScrollbar()
457 {
458         if (!bv_->text) {
459                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
460                 workarea().setScrollbarParams(0, 0, 0);
461                 return;
462         }
463
464         LyXText const & t = *bv_->text;
465
466         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
467                 << t.top_y() << ", default height " << defaultRowHeight() << endl;
468
469         workarea().setScrollbarParams(t.height, t.top_y(), defaultRowHeight());
470 }
471
472
473 void BufferView::Pimpl::scrollDocView(int value)
474 {
475         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
476
477         if (!buffer_)
478                 return;
479
480         screen().hideCursor();
481
482         screen().draw(bv_->text, bv_, value);
483
484         if (!lyxrc.cursor_follows_scrollbar)
485                 return;
486
487         LyXText * vbt = bv_->text;
488
489         int const height = defaultRowHeight();
490         int const first = static_cast<int>((bv_->text->top_y() + height));
491         int const last = static_cast<int>((bv_->text->top_y() + workarea().workHeight() - height));
492
493         if (vbt->cursor.y() < first)
494                 vbt->setCursorFromCoordinates(0, first);
495         else if (vbt->cursor.y() > last)
496                 vbt->setCursorFromCoordinates(0, last);
497
498         owner_->updateLayoutChoice();
499 }
500
501
502 void BufferView::Pimpl::scroll(int lines)
503 {
504         if (!buffer_) {
505                 return;
506         }
507
508         LyXText const * t = bv_->text;
509         int const line_height = defaultRowHeight();
510
511         // The new absolute coordinate
512         int new_top_y = t->top_y() + lines * line_height;
513
514         // Restrict to a valid value
515         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
516         new_top_y = std::max(0, new_top_y);
517
518         scrollDocView(new_top_y);
519
520         // Update the scrollbar.
521         workarea().setScrollbarParams(t->height, t->top_y(), defaultRowHeight());
522 }
523
524
525 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
526                                          key_modifier::state state)
527 {
528         bv_->owner()->getLyXFunc().processKeySym(key, state);
529
530         /* This is perhaps a bit of a hack. When we move
531          * around, or type, it's nice to be able to see
532          * the cursor immediately after the keypress. So
533          * we reset the toggle timeout and force the visibility
534          * of the cursor. Note we cannot do this inside
535          * dispatch() itself, because that's called recursively.
536          */
537         if (available()) {
538                 cursor_timeout.restart();
539                 screen().showCursor(*bv_);
540         }
541 }
542
543
544 void BufferView::Pimpl::selectionRequested()
545 {
546         static string sel;
547
548         if (!available())
549                 return;
550
551         LyXText * text = bv_->getLyXText();
552
553         if (text->selection.set() &&
554                 (!bv_->text->xsel_cache.set() ||
555                  text->selection.start != bv_->text->xsel_cache.start ||
556                  text->selection.end != bv_->text->xsel_cache.end))
557         {
558                 bv_->text->xsel_cache = text->selection;
559                 sel = text->selectionAsString(bv_->buffer(), false);
560         } else if (!text->selection.set()) {
561                 sel = string();
562                 bv_->text->xsel_cache.set(false);
563         }
564         if (!sel.empty()) {
565                 workarea().putClipboard(sel);
566         }
567 }
568
569
570 void BufferView::Pimpl::selectionLost()
571 {
572         if (available()) {
573                 screen().hideCursor();
574                 toggleSelection();
575                 bv_->getLyXText()->clearSelection();
576                 bv_->text->xsel_cache.set(false);
577         }
578 }
579
580
581 void BufferView::Pimpl::workAreaResize()
582 {
583         static int work_area_width;
584         static int work_area_height;
585
586         bool const widthChange = workarea().workWidth() != work_area_width;
587         bool const heightChange = workarea().workHeight() != work_area_height;
588
589         // update from work area
590         work_area_width = workarea().workWidth();
591         work_area_height = workarea().workHeight();
592
593         if (buffer_ != 0) {
594                 if (widthChange) {
595                         // The visible LyXView need a resize
596                         resizeCurrentBuffer();
597
598                         // Remove all texts from the textcache
599                         // This is not _really_ what we want to do. What
600                         // we really want to do is to delete in textcache
601                         // that does not have a BufferView with matching
602                         // width, but as long as we have only one BufferView
603                         // deleting all gives the same result.
604                         if (lyxerr.debugging())
605                                 textcache.show(lyxerr, "Expose delete all");
606                         textcache.clear();
607                         // FIXME: this is already done in resizeCurrentBuffer() ??
608                         buffer_->resizeInsets(bv_);
609                 } else if (heightChange) {
610                         // fitCursor() ensures we don't jump back
611                         // to the start of the document on vertical
612                         // resize
613                         fitCursor();
614                 }
615         }
616
617         if (widthChange || heightChange) {
618                 repaint();
619         }
620
621         // always make sure that the scrollbar is sane.
622         updateScrollbar();
623         owner_->updateLayoutChoice();
624         return;
625 }
626
627
628 void BufferView::Pimpl::update()
629 {
630         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
631                 screen().update(*bv_);
632                 bv_->text->clearPaint();
633         }
634 }
635
636
637 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
638 {
639         if (!text->selection.set() && (f & SELECT)) {
640                 text->selection.cursor = text->cursor;
641         }
642
643         text->partialRebreak();
644
645         if (text->inset_owner) {
646                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
647                 updateInset(text->inset_owner);
648         } else {
649                 update();
650         }
651 }
652
653
654 void BufferView::Pimpl::update(BufferView::UpdateCodes f)
655 {
656         LyXText * text = bv_->text;
657
658         if (!text->selection.set() && (f & SELECT)) {
659                 text->selection.cursor = text->cursor;
660         }
661
662         text->partialRebreak();
663
664         if (text->inset_owner) {
665                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
666                 updateInset(text->inset_owner);
667         } else {
668                 update();
669         }
670 }
671
672
673 // Callback for cursor timer
674 void BufferView::Pimpl::cursorToggle()
675 {
676         if (!buffer_) {
677                 cursor_timeout.restart();
678                 return;
679         }
680
681         screen().toggleCursor(*bv_);
682
683         cursor_timeout.restart();
684 }
685
686
687 bool BufferView::Pimpl::available() const
688 {
689         if (buffer_ && bv_->text)
690                 return true;
691         return false;
692 }
693
694
695 Change const BufferView::Pimpl::getCurrentChange()
696 {
697         if (!bv_->buffer()->params.tracking_changes)
698                 return Change(Change::UNCHANGED);
699
700         LyXText * t(bv_->getLyXText());
701
702         if (!t->selection.set())
703                 return Change(Change::UNCHANGED);
704
705         LyXCursor const & cur(t->selection.start);
706         return cur.par()->lookupChangeFull(cur.pos());
707 }
708
709
710 void BufferView::Pimpl::beforeChange(LyXText * text)
711 {
712         toggleSelection();
713         text->clearSelection();
714 }
715
716
717 void BufferView::Pimpl::savePosition(unsigned int i)
718 {
719         if (i >= saved_positions_num)
720                 return;
721         saved_positions[i] = Position(buffer_->fileName(),
722                                       bv_->text->cursor.par()->id(),
723                                       bv_->text->cursor.pos());
724         if (i > 0)
725                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
726 }
727
728
729 void BufferView::Pimpl::restorePosition(unsigned int i)
730 {
731         if (i >= saved_positions_num)
732                 return;
733
734         string const fname = saved_positions[i].filename;
735
736         beforeChange(bv_->text);
737
738         if (fname != buffer_->fileName()) {
739                 Buffer * b;
740                 if (bufferlist.exists(fname))
741                         b = bufferlist.getBuffer(fname);
742                 else {
743                         b = bufferlist.newBuffer(fname);
744                         ::loadLyXFile(b, fname); // don't ask, just load it
745                 }
746                 if (b != 0)
747                         buffer(b);
748         }
749
750         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
751         if (par == buffer_->par_iterator_end())
752                 return;
753
754         bv_->text->setCursor(par.pit(),
755                              min(par->size(), saved_positions[i].par_pos));
756
757         update(BufferView::SELECT);
758         if (i > 0)
759                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
760 }
761
762
763 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
764 {
765         if (i >= saved_positions_num)
766                 return false;
767
768         return !saved_positions[i].filename.empty();
769 }
770
771
772 void BufferView::Pimpl::switchKeyMap()
773 {
774         if (!lyxrc.rtl_support)
775                 return;
776
777         LyXText * text = bv_->getLyXText();
778         if (text->real_current_font.isRightToLeft()
779             && !(bv_->theLockingInset()
780                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
781         {
782                 if (owner_->getIntl().keymap == Intl::PRIMARY)
783                         owner_->getIntl().KeyMapSec();
784         } else {
785                 if (owner_->getIntl().keymap == Intl::SECONDARY)
786                         owner_->getIntl().KeyMapPrim();
787         }
788 }
789
790
791 void BufferView::Pimpl::insetUnlock()
792 {
793         if (bv_->theLockingInset()) {
794                 bv_->theLockingInset()->insetUnlock(bv_);
795                 bv_->theLockingInset(0);
796                 finishUndo();
797         }
798 }
799
800
801 void BufferView::Pimpl::toggleSelection(bool b)
802 {
803         if (bv_->theLockingInset())
804                 bv_->theLockingInset()->toggleSelection(bv_, b);
805         screen().toggleSelection(bv_->text, bv_, b);
806 }
807
808
809 void BufferView::Pimpl::toggleToggle()
810 {
811         screen().toggleToggle(bv_->text, bv_);
812 }
813
814
815 void BufferView::Pimpl::center()
816 {
817         LyXText * t = bv_->text;
818
819         beforeChange(t);
820         int const half_height = workarea().workHeight() / 2;
821         int new_y = 0;
822
823         if (t->cursor.y() > half_height) {
824                 new_y = t->cursor.y() - half_height;
825         }
826
827         // FIXME: look at this comment again ...
828
829         // FIXME: can we do this w/o calling screen directly ?
830         // This updates top_y() but means the fitCursor() call
831         // from the update(FITCUR) doesn't realise that we might
832         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
833         // the scrollbar to be updated as it should, so we have
834         // to do it manually. Any operation that does a center()
835         // and also might have moved top_y() must make sure to call
836         // updateScrollbar() currently. Never mind that this is a
837         // pretty obfuscated way of updating t->top_y()
838         screen().draw(t, bv_, new_y);
839
840         update(BufferView::SELECT);
841 }
842
843
844 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
845 {
846         workarea().putClipboard(stuff);
847 }
848
849
850 /*
851  * Dispatch functions for actions which can be valid for BufferView->text
852  * and/or InsetText->text!!!
853  */
854
855
856 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
857 {
858 #if 0
859         LyXCursor cursor = bv_->getLyXText()->cursor;
860         Buffer::inset_iterator it =
861                 find_if(Buffer::inset_iterator(
862                         cursor.par(), cursor.pos()),
863                         buffer_->inset_iterator_end(),
864                         lyx::compare_memfun(&Inset::lyxCode, code));
865         return it != buffer_->inset_iterator_end() ? (*it) : 0;
866 #else
867         // Ok, this is a little bit too brute force but it
868         // should work for now. Better infrastructure is comming. (Lgb)
869
870         Buffer * b = bv_->buffer();
871         LyXCursor cursor = bv_->getLyXText()->cursor;
872
873         Buffer::inset_iterator beg = b->inset_iterator_begin();
874         Buffer::inset_iterator end = b->inset_iterator_end();
875
876         bool cursor_par_seen = false;
877
878         for (; beg != end; ++beg) {
879                 if (beg.getPar() == cursor.par()) {
880                         cursor_par_seen = true;
881                 }
882                 if (cursor_par_seen) {
883                         if (beg.getPar() == cursor.par()
884                             && beg.getPos() >= cursor.pos()) {
885                                 break;
886                         } else if (beg.getPar() != cursor.par()) {
887                                 break;
888                         }
889                 }
890
891         }
892         if (beg != end) {
893                 // Now find the first inset that matches code.
894                 for (; beg != end; ++beg) {
895                         if (beg->lyxCode() == code) {
896                                 return &(*beg);
897                         }
898                 }
899         }
900         return 0;
901 #endif
902 }
903
904
905 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
906 {
907         string filename = filen;
908
909         if (filename.empty()) {
910                 // Launch a file browser
911                 string initpath = lyxrc.document_path;
912
913                 if (available()) {
914                         string const trypath = owner_->buffer()->filePath();
915                         // If directory is writeable, use this as default.
916                         if (IsDirWriteable(trypath))
917                                 initpath = trypath;
918                 }
919
920                 FileDialog fileDlg(_("Select LyX document to insert"),
921                         LFUN_FILE_INSERT,
922                         make_pair(string(_("Documents|#o#O")),
923                                   string(lyxrc.document_path)),
924                         make_pair(string(_("Examples|#E#e")),
925                                   string(AddPath(system_lyxdir, "examples"))));
926
927                 FileDialog::Result result =
928                         fileDlg.open(initpath,
929                                        _("*.lyx| LyX Documents (*.lyx)"));
930
931                 if (result.first == FileDialog::Later)
932                         return;
933
934                 filename = result.second;
935
936                 // check selected filename
937                 if (filename.empty()) {
938                         owner_->message(_("Canceled."));
939                         return;
940                 }
941         }
942
943         // get absolute path of file and add ".lyx" to the filename if
944         // necessary
945         filename = FileSearch(string(), filename, "lyx");
946
947         string const disp_fn = MakeDisplayPath(filename);
948         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
949         bool const res = bv_->insertLyXFile(filename);
950         if (res)
951                 owner_->message(bformat(_("Document %1$s inserted."), disp_fn));
952         else
953                 owner_->message(bformat(_("Could not insert document %1$s"), disp_fn));
954
955 #warning remove this if update() is gone
956         bv_->text->fullRebreak();
957 }
958
959
960 void BufferView::Pimpl::trackChanges()
961 {
962         Buffer * buf(bv_->buffer());
963         bool const tracking(buf->params.tracking_changes);
964
965         if (!tracking) {
966                 ParIterator const end = buf->par_iterator_end();
967                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
968                         it->trackChanges();
969                 buf->params.tracking_changes = true;
970
971                 // we cannot allow undos beyond the freeze point
972                 buf->undostack.clear();
973         } else {
974                 update(BufferView::SELECT);
975                 bv_->text->setCursor(buf->paragraphs.begin(), 0);
976 #warning changes FIXME
977                 //moveCursorUpdate(false);
978
979                 bool found = lyxfind::findNextChange(bv_);
980                 if (found) {
981                         owner_->getDialogs().show("changes");
982                         return;
983                 }
984
985                 ParIterator const end = buf->par_iterator_end();
986                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
987                         it->untrackChanges();
988                 buf->params.tracking_changes = false;
989         }
990
991         buf->redostack.clear();
992 }
993
994
995 // Doesn't go through lyxfunc, so we need to update the
996 // layout choice etc. ourselves
997 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev_in)
998 {
999         // e.g. Qt mouse press when no buffer
1000         if (!available())
1001                 return false;
1002
1003         screen().hideCursor();
1004
1005         // Make sure that the cached BufferView is correct.
1006         FuncRequest ev = ev_in;
1007         ev.setView(bv_);
1008
1009         bool const res = dispatch(ev);
1010
1011         // see workAreaKeyPress
1012         cursor_timeout.restart();
1013         screen().showCursor(*bv_);
1014
1015         // FIXME: we should skip these when selecting
1016         bv_->owner()->updateLayoutChoice();
1017         bv_->owner()->updateToolbar();
1018         bv_->fitCursor();
1019
1020         // slight hack: this is only called currently when
1021         // we clicked somewhere, so we force through the display
1022         // of the new status here.
1023         bv_->owner()->clearMessage();
1024
1025         return res;
1026 }
1027
1028
1029 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1030 {
1031         // Make sure that the cached BufferView is correct.
1032         FuncRequest ev = ev_in;
1033         ev.setView(bv_);
1034
1035         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1036                 << " action[" << ev.action << ']'
1037                 << " arg[" << ev.argument << ']'
1038                 << " x[" << ev.x << ']'
1039                 << " y[" << ev.y << ']'
1040                 << " button[" << ev.button() << ']'
1041                 << endl;
1042
1043         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
1044
1045         switch (ev.action) {
1046
1047         case LFUN_SCROLL_INSET:
1048                 // this is not handled here as this function is only active
1049                 // if we have a locking_inset and that one is (or contains)
1050                 // a tabular-inset
1051                 break;
1052
1053         case LFUN_FILE_INSERT:
1054                 MenuInsertLyXFile(ev.argument);
1055                 break;
1056
1057         case LFUN_FILE_INSERT_ASCII_PARA:
1058                 InsertAsciiFile(bv_, ev.argument, true);
1059                 break;
1060
1061         case LFUN_FILE_INSERT_ASCII:
1062                 InsertAsciiFile(bv_, ev.argument, false);
1063                 break;
1064
1065         case LFUN_LANGUAGE:
1066                 lang(bv_, ev.argument);
1067                 switchKeyMap();
1068                 owner_->view_state_changed();
1069                 break;
1070
1071         case LFUN_EMPH:
1072                 emph(bv_);
1073                 owner_->view_state_changed();
1074                 break;
1075
1076         case LFUN_BOLD:
1077                 bold(bv_);
1078                 owner_->view_state_changed();
1079                 break;
1080
1081         case LFUN_NOUN:
1082                 noun(bv_);
1083                 owner_->view_state_changed();
1084                 break;
1085
1086         case LFUN_CODE:
1087                 code(bv_);
1088                 owner_->view_state_changed();
1089                 break;
1090
1091         case LFUN_SANS:
1092                 sans(bv_);
1093                 owner_->view_state_changed();
1094                 break;
1095
1096         case LFUN_ROMAN:
1097                 roman(bv_);
1098                 owner_->view_state_changed();
1099                 break;
1100
1101         case LFUN_DEFAULT:
1102                 styleReset(bv_);
1103                 owner_->view_state_changed();
1104                 break;
1105
1106         case LFUN_UNDERLINE:
1107                 underline(bv_);
1108                 owner_->view_state_changed();
1109                 break;
1110
1111         case LFUN_FONT_SIZE:
1112                 fontSize(bv_, ev.argument);
1113                 owner_->view_state_changed();
1114                 break;
1115
1116         case LFUN_FONT_STATE:
1117                 owner_->getLyXFunc().setMessage(currentState(bv_));
1118                 break;
1119
1120         case LFUN_INSERT_LABEL: {
1121                 // Try and generate a valid label
1122                 string const contents = ev.argument.empty() ?
1123                         getPossibleLabel(*bv_) : ev.argument;
1124                 InsetCommandParams icp("label", contents);
1125                 string data = InsetCommandMailer::params2string("label", icp);
1126                 owner_->getDialogs().show("label", data, 0);
1127         }
1128         break;
1129
1130         case LFUN_BOOKMARK_SAVE:
1131                 savePosition(strToUnsignedInt(ev.argument));
1132                 break;
1133
1134         case LFUN_BOOKMARK_GOTO:
1135                 restorePosition(strToUnsignedInt(ev.argument));
1136                 break;
1137
1138         case LFUN_REF_GOTO: {
1139                 string label = ev.argument;
1140                 if (label.empty()) {
1141                         InsetRef * inset =
1142                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1143                         if (inset) {
1144                                 label = inset->getContents();
1145                                 savePosition(0);
1146                         }
1147                 }
1148
1149                 if (!label.empty())
1150                         bv_->gotoLabel(label);
1151         }
1152         break;
1153
1154         // --- accented characters ---------------------------
1155
1156         case LFUN_UMLAUT:
1157         case LFUN_CIRCUMFLEX:
1158         case LFUN_GRAVE:
1159         case LFUN_ACUTE:
1160         case LFUN_TILDE:
1161         case LFUN_CEDILLA:
1162         case LFUN_MACRON:
1163         case LFUN_DOT:
1164         case LFUN_UNDERDOT:
1165         case LFUN_UNDERBAR:
1166         case LFUN_CARON:
1167         case LFUN_SPECIAL_CARON:
1168         case LFUN_BREVE:
1169         case LFUN_TIE:
1170         case LFUN_HUNG_UMLAUT:
1171         case LFUN_CIRCLE:
1172         case LFUN_OGONEK:
1173                 if (ev.argument.empty()) {
1174                         // As always...
1175                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1176                 } else {
1177                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1178                         owner_->getIntl().getTransManager()
1179                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1180                         update(bv_->getLyXText(), BufferView::SELECT);
1181                 }
1182                 break;
1183
1184         case LFUN_MATH_MACRO:
1185         case LFUN_MATH_DELIM:
1186         case LFUN_INSERT_MATRIX:
1187         case LFUN_INSERT_MATH:
1188         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1189         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1190         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1191                 mathDispatch(ev);
1192                 break;
1193
1194         case LFUN_INSET_APPLY: {
1195                 string const name = ev.getArg(0);
1196
1197                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1198                 if (inset) {
1199                         // This works both for 'original' and 'mathed' insets.
1200                         // Note that the localDispatch performs updateInset
1201                         // also.
1202                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1203                         inset->localDispatch(fr);
1204                 } else {
1205                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1206                         dispatch(fr);
1207                 }
1208         }
1209         break;
1210
1211         case LFUN_INSET_INSERT: {
1212                 Inset * inset = createInset(ev);
1213                 if (inset && insertInset(inset)) {
1214                         updateInset(inset);
1215
1216                         string const name = ev.getArg(0);
1217                         if (name == "bibitem") {
1218                                 // We need to do a redraw because the maximum
1219                                 // InsetBibitem width could have changed
1220 #warning please check you mean repaint() not update(),
1221 #warning and whether the repaint() is needed at all
1222                                 bv_->repaint();
1223                                 bv_->fitCursor();
1224                         }
1225                 } else {
1226                         delete inset;
1227                 }
1228         }
1229         break;
1230
1231         case LFUN_FLOAT_LIST:
1232                 if (tclass.floats().typeExist(ev.argument)) {
1233                         Inset * inset = new InsetFloatList(ev.argument);
1234                         if (!insertInset(inset, tclass.defaultLayoutName()))
1235                                 delete inset;
1236                 } else {
1237                         lyxerr << "Non-existent float type: "
1238                                << ev.argument << endl;
1239                 }
1240                 break;
1241
1242         case LFUN_LAYOUT_PARAGRAPH: {
1243                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1244                 if (!par)
1245                         break;
1246
1247                 string data;
1248                 params2string(*par, data);
1249
1250                 data = "show\n" + data;
1251                 bv_->owner()->getDialogs().show("paragraph", data);
1252                 break;
1253         }
1254
1255         case LFUN_PARAGRAPH_UPDATE: {
1256                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1257                         break;
1258                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1259                 if (!par)
1260                         break;
1261
1262                 string data;
1263                 params2string(*par, data);
1264
1265                 // Will the paragraph accept changes from the dialog?
1266                 Inset * const inset = par->inInset();
1267                 bool const accept =
1268                         !(inset && inset->forceDefaultParagraphs(inset));
1269
1270                 data = "update " + tostr(accept) + '\n' + data;
1271                 bv_->owner()->getDialogs().update("paragraph", data);
1272                 break;
1273         }
1274
1275         case LFUN_PARAGRAPH_APPLY:
1276                 setParagraphParams(*bv_, ev.argument);
1277                 break;
1278
1279         case LFUN_THESAURUS_ENTRY:
1280         {
1281                 string arg = ev.argument;
1282
1283                 if (arg.empty()) {
1284                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1285                                                                    false);
1286
1287                         // FIXME
1288                         if (arg.size() > 100 || arg.empty()) {
1289                                 // Get word or selection
1290                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1291                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1292                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1293                         }
1294                 }
1295
1296                 bv_->owner()->getDialogs().show("thesaurus", arg);
1297         }
1298                 break;
1299
1300         case LFUN_TRACK_CHANGES:
1301                 trackChanges();
1302                 break;
1303
1304         case LFUN_MERGE_CHANGES:
1305                 owner_->getDialogs().show("changes");
1306                 break;
1307
1308         case LFUN_ACCEPT_ALL_CHANGES: {
1309                 update(BufferView::SELECT);
1310                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1311 #warning FIXME changes
1312                 //moveCursorUpdate(false);
1313
1314                 while (lyxfind::findNextChange(bv_)) {
1315                         bv_->getLyXText()->acceptChange();
1316                 }
1317                 update(BufferView::SELECT);
1318                 break;
1319         }
1320
1321         case LFUN_REJECT_ALL_CHANGES: {
1322                 update(BufferView::SELECT);
1323                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1324 #warning FIXME changes
1325                 //moveCursorUpdate(false);
1326
1327                 while (lyxfind::findNextChange(bv_)) {
1328                         bv_->getLyXText()->rejectChange();
1329                 }
1330                 update(BufferView::SELECT);
1331                 break;
1332         }
1333
1334         case LFUN_ACCEPT_CHANGE: {
1335                 bv_->getLyXText()->acceptChange();
1336                 update(BufferView::SELECT);
1337                 break;
1338         }
1339
1340         case LFUN_REJECT_CHANGE: {
1341                 bv_->getLyXText()->rejectChange();
1342                 update(BufferView::SELECT);
1343                 break;
1344         }
1345
1346         case LFUN_UNKNOWN_ACTION:
1347                 ev.errorMessage(N_("Unknown function!"));
1348                 break;
1349
1350         default:
1351                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1352         } // end of switch
1353
1354         return true;
1355 }
1356
1357
1358 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1359 {
1360         // if we are in a locking inset we should try to insert the
1361         // inset there otherwise this is a illegal function now
1362         if (bv_->theLockingInset()) {
1363                 if (bv_->theLockingInset()->insetAllowed(inset))
1364                         return bv_->theLockingInset()->insertInset(bv_, inset);
1365                 return false;
1366         }
1367
1368         // not quite sure if we want this...
1369         setCursorParUndo(bv_);
1370         freezeUndo();
1371
1372         beforeChange(bv_->text);
1373         if (!lout.empty()) {
1374                 update(BufferView::SELECT);
1375                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1376                 update(BufferView::SELECT);
1377
1378                 if (!bv_->text->cursor.par()->empty()) {
1379                         bv_->text->cursorLeft(bv_);
1380
1381                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1382                         update(BufferView::SELECT);
1383                 }
1384
1385                 string lres = lout;
1386                 LyXTextClass const & tclass =
1387                         buffer_->params.getLyXTextClass();
1388                 bool hasLayout = tclass.hasLayout(lres);
1389                 string lay = tclass.defaultLayoutName();
1390
1391                 if (hasLayout != false) {
1392                         // layout found
1393                         lay = lres;
1394                 } else {
1395                         // layout not fount using default
1396                         lay = tclass.defaultLayoutName();
1397                 }
1398
1399                 bv_->text->setLayout(lay);
1400
1401                 bv_->text->setParagraph(0, 0,
1402                                    0, 0,
1403                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1404                                    Spacing(),
1405                                    LYX_ALIGN_LAYOUT,
1406                                    string(),
1407                                    0);
1408                 update(BufferView::SELECT);
1409         }
1410
1411         bv_->text->insertInset(inset);
1412         update(BufferView::SELECT);
1413
1414         unFreezeUndo();
1415         return true;
1416 }
1417
1418
1419 void BufferView::Pimpl::updateInset(Inset * inset)
1420 {
1421         if (!inset || !available())
1422                 return;
1423
1424         // first check for locking insets
1425         if (bv_->theLockingInset()) {
1426                 if (bv_->theLockingInset() == inset) {
1427                         if (bv_->text->updateInset(inset)) {
1428                                 update();
1429                                 updateScrollbar();
1430                                 return;
1431                         }
1432                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1433                         if (bv_->text->updateInset(bv_->theLockingInset())) {
1434                                 update();
1435                                 updateScrollbar();
1436                                 return;
1437                         }
1438                 }
1439         }
1440
1441         // then check if the inset is a top_level inset (has no owner)
1442         // if yes do the update as always otherwise we have to update the
1443         // toplevel inset where this inset is inside
1444         Inset * tl_inset = inset;
1445         while (tl_inset->owner())
1446                 tl_inset = tl_inset->owner();
1447         if (tl_inset == inset) {
1448                 update(BufferView::UPDATE);
1449                 if (bv_->text->updateInset(inset)) {
1450                         update(BufferView::SELECT);
1451                         return;
1452                 }
1453         } else if (static_cast<UpdatableInset *>(tl_inset)
1454                            ->updateInsetInInset(bv_, inset))
1455         {
1456                 if (bv_->text->updateInset(tl_inset)) {
1457                         update();
1458                         updateScrollbar();
1459                 }
1460         }
1461 }