src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * Copyright 2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author various
   7  */
   8
   9 #include <config.h>
  10
  11 #ifdef __GNUG__
  12 #pragma implementation
  13 #endif
  14
  15 #include "BufferView_pimpl.h"
  16 #include "frontends/WorkArea.h"
  17 #include "frontends/screen.h"
  18 #include "frontends/LyXScreenFactory.h"
  19 #include "frontends/WorkAreaFactory.h"
  20 #include "frontends/Dialogs.h"
  21 #include "frontends/Alert.h"
  22 #include "frontends/FileDialog.h"
  23 #include "frontends/mouse_state.h"
  24 #include "lyxtext.h"
  25 #include "lyxrow.h"
  26 #include "paragraph.h"
  27 #include "frontends/LyXView.h"
  28 #include "commandtags.h"
  29 #include "lyxfunc.h"
  30 #include "debug.h"
  31 #include "bufferview_funcs.h"
  32 #include "TextCache.h"
  33 #include "bufferlist.h"
  34 #include "lyxrc.h"
  35 #include "intl.h"
  36 // added for Dispatch functions
  37 #include "lyx_cb.h"
  38 #include "lyx_main.h"
  39 #include "FloatList.h"
  40 #include "gettext.h"
  41 #include "ParagraphParameters.h"
  42 #include "undo_funcs.h"
  43 #include "funcrequest.h"
  44
  45 #include "insets/insetbib.h"
  46 #include "insets/insettext.h"
  47 #include "insets/insetlatexaccent.h"
  48 #include "insets/insettoc.h"
  49 #include "insets/insetindex.h"
  50 #include "insets/insetref.h"
  51 #include "insets/insetinclude.h"
  52 #include "insets/insetcite.h"
  53 #include "insets/insetgraphics.h"
  54 #include "insets/insetmarginal.h"
  55 #include "insets/insetfloatlist.h"
  56
  57 #include "mathed/formulabase.h"
  58
  59 #include "graphics/Previews.h"
  60
  61 #include "support/LAssert.h"
  62 #include "support/lstrings.h"
  63 #include "support/filetools.h"
  64
  65 #include <boost/bind.hpp>
  66 #include <boost/signals/connection.hpp>
  67
  68 #include <unistd.h>
  69 #include <sys/wait.h>
  70
  71
  72 using std::vector;
  73 using std::find_if;
  74 using std::find;
  75 using std::pair;
  76 using std::endl;
  77 using std::make_pair;
  78 using std::min;
  79
  80 using lyx::pos_type;
  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::dispatch, 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 WorkArea & BufferView::Pimpl::workarea() const
 136 {
 137         return *workarea_.get();
 138 }
 139
 140
 141 LyXScreen & BufferView::Pimpl::screen() const
 142 {
 143         return *screen_.get();
 144 }
 145
 146
 147 Painter & BufferView::Pimpl::painter() const
 148 {
 149         return workarea().getPainter();
 150 }
 151
 152
 153 void BufferView::Pimpl::buffer(Buffer * b)
 154 {
 155         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 156                             << b << ")" << endl;
 157         if (buffer_) {
 158                 buffer_->delUser(bv_);
 159
 160                 // Put the old text into the TextCache, but
 161                 // only if the buffer is still loaded.
 162                 // Also set the owner of the test to 0
 163                 //              bv_->text->owner(0);
 164                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 165                 if (lyxerr.debugging())
 166                         textcache.show(lyxerr, "BufferView::buffer");
 167
 168                 bv_->text = 0;
 169         }
 170
 171         // set current buffer
 172         buffer_ = b;
 173
 174         if (bufferlist.getState() == BufferList::CLOSING) return;
 175
 176         // if we are closing the buffer, use the first buffer as current
 177         if (!buffer_) {
 178                 buffer_ = bufferlist.first();
 179         }
 180
 181         if (buffer_) {
 182                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 183                 buffer_->addUser(bv_);
 184
 185                 // If we don't have a text object for this, we make one
 186                 if (bv_->text == 0) {
 187                         resizeCurrentBuffer();
 188                 }
 189
 190                 // FIXME: needed when ?
 191                 bv_->text->first_y =
 192                         screen().topCursorVisible(bv_->text->cursor, bv_->text->first_y);
 193
 194                 // Similarly, buffer-dependent dialogs should be updated or
 195                 // hidden. This should go here because some dialogs (eg ToC)
 196                 // require bv_->text.
 197                 owner_->getDialogs().updateBufferDependent(true);
 198         } else {
 199                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 200                 owner_->getDialogs().hideBufferDependent();
 201
 202                 // Also remove all remaining text's from the testcache.
 203                 // (there should not be any!) (if there is any it is a
 204                 // bug!)
 205                 if (lyxerr.debugging())
 206                         textcache.show(lyxerr, "buffer delete all");
 207                 textcache.clear();
 208         }
 209
 210         repaint();
 211         updateScrollbar();
 212         owner_->updateMenubar();
 213         owner_->updateToolbar();
 214         owner_->updateLayoutChoice();
 215         owner_->updateWindowTitle();
 216
 217         if (grfx::Previews::activated() && buffer_)
 218                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 219 }
 220
 221
 222 bool BufferView::Pimpl::fitCursor()
 223 {
 224         bool ret;
 225
 226         if (bv_->theLockingInset()) {
 227                 bv_->theLockingInset()->fitInsetCursor(bv_);
 228                 ret = true;
 229         } else {
 230                 ret = screen().fitCursor(bv_->text, bv_);
 231         }
 232
 233         bv_->owner()->getDialogs().updateParagraph();
 234         if (ret)
 235                 updateScrollbar();
 236         return ret;
 237 }
 238
 239
 240 void BufferView::Pimpl::redoCurrentBuffer()
 241 {
 242         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 243         if (buffer_ && bv_->text) {
 244                 resizeCurrentBuffer();
 245                 updateScrollbar();
 246                 owner_->updateLayoutChoice();
 247                 repaint();
 248         }
 249 }
 250
 251
 252 int BufferView::Pimpl::resizeCurrentBuffer()
 253 {
 254         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 255
 256         Paragraph * par = 0;
 257         Paragraph * selstartpar = 0;
 258         Paragraph * selendpar = 0;
 259         UpdatableInset * the_locking_inset = 0;
 260
 261         pos_type pos = 0;
 262         pos_type selstartpos = 0;
 263         pos_type selendpos = 0;
 264         bool selection = false;
 265         bool mark_set  = false;
 266
 267         owner_->prohibitInput();
 268
 269         owner_->message(_("Formatting document..."));
 270
 271         if (bv_->text) {
 272                 par = bv_->text->cursor.par();
 273                 pos = bv_->text->cursor.pos();
 274                 selstartpar = bv_->text->selection.start.par();
 275                 selstartpos = bv_->text->selection.start.pos();
 276                 selendpar = bv_->text->selection.end.par();
 277                 selendpos = bv_->text->selection.end.pos();
 278                 selection = bv_->text->selection.set();
 279                 mark_set = bv_->text->selection.mark();
 280                 the_locking_inset = bv_->theLockingInset();
 281                 buffer_->resizeInsets(bv_);
 282                 // I don't think the delete and new are necessary here we just could
 283                 // call only init! (Jug 20020419)
 284                 delete bv_->text;
 285                 bv_->text = new LyXText(bv_);
 286                 bv_->text->init(bv_);
 287         } else {
 288                 // See if we have a text in TextCache that fits
 289                 // the new buffer_ with the correct width.
 290                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 291                 if (bv_->text) {
 292                         if (lyxerr.debugging()) {
 293                                 lyxerr << "Found a LyXText that fits:\n";
 294                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 295                         }
 296                         // Set the owner of the newly found text
 297                         //      bv_->text->owner(bv_);
 298                         if (lyxerr.debugging())
 299                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 300                 } else {
 301                         bv_->text = new LyXText(bv_);
 302                         bv_->text->init(bv_);
 303                         //buffer_->resizeInsets(bv_);
 304                 }
 305         }
 306
 307         if (par) {
 308                 bv_->text->selection.set(true);
 309                 // At this point just to avoid the Delete-Empty-Paragraph-
 310                 // Mechanism when setting the cursor.
 311                 bv_->text->selection.mark(mark_set);
 312                 if (selection) {
 313                         bv_->text->setCursor(bv_, selstartpar, selstartpos);
 314                         bv_->text->selection.cursor = bv_->text->cursor;
 315                         bv_->text->setCursor(bv_, selendpar, selendpos);
 316                         bv_->text->setSelection(bv_);
 317                         bv_->text->setCursor(bv_, par, pos);
 318                 } else {
 319                         bv_->text->setCursor(bv_, par, pos);
 320                         bv_->text->selection.cursor = bv_->text->cursor;
 321                         bv_->text->selection.set(false);
 322                 }
 323                 // remake the inset locking
 324                 bv_->theLockingInset(the_locking_inset);
 325         }
 326
 327         bv_->text->first_y = screen().topCursorVisible(bv_->text->cursor, bv_->text->first_y);
 328
 329         switchKeyMap();
 330         owner_->allowInput();
 331
 332         updateScrollbar();
 333
 334         return 0;
 335 }
 336
 337
 338 void BufferView::Pimpl::repaint()
 339 {
 340         // Regenerate the screen.
 341         screen().redraw(bv_->text, bv_);
 342 }
 343
 344
 345 void BufferView::Pimpl::updateScrollbar()
 346 {
 347         if (!bv_->text) {
 348                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 349                 workarea().setScrollbarParams(0, 0, 0);
 350                 return;
 351         }
 352
 353         LyXText const & t = *bv_->text;
 354
 355         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", first_y "
 356                 << t.first_y << ", default height " << t.defaultHeight() << endl;
 357
 358         workarea().setScrollbarParams(t.height, t.first_y, t.defaultHeight());
 359 }
 360
 361
 362 void BufferView::Pimpl::scrollDocView(int value)
 363 {
 364         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 365
 366         if (!buffer_)
 367                 return;
 368
 369         screen().draw(bv_->text, bv_, value);
 370
 371         if (!lyxrc.cursor_follows_scrollbar)
 372                 return;
 373
 374         LyXText * vbt = bv_->text;
 375
 376         int const height = vbt->defaultHeight();
 377         int const first = static_cast<int>((bv_->text->first_y + height));
 378         int const last = static_cast<int>((bv_->text->first_y + workarea().workHeight() - height));
 379
 380         if (vbt->cursor.y() < first)
 381                 vbt->setCursorFromCoordinates(bv_, 0, first);
 382         else if (vbt->cursor.y() > last)
 383                 vbt->setCursorFromCoordinates(bv_, 0, last);
 384 }
 385
 386
 387 void BufferView::Pimpl::scroll(int lines)
 388 {
 389         if (!buffer_) {
 390                 return;
 391         }
 392
 393         LyXText const * t = bv_->text;
 394         int const line_height = t->defaultHeight();
 395
 396         // The new absolute coordinate
 397         int new_first_y = t->first_y + lines * line_height;
 398
 399         // Restrict to a valid value
 400         new_first_y = std::min(t->height - 4 * line_height, new_first_y);
 401         new_first_y = std::max(0, new_first_y);
 402
 403         scrollDocView(new_first_y);
 404
 405         // Update the scrollbar.
 406         workarea().setScrollbarParams(t->height, t->first_y, t->defaultHeight());
 407 }
 408
 409
 410 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 411                                          key_modifier::state state)
 412 {
 413         bv_->owner()->getLyXFunc().processKeySym(key, state);
 414 }
 415
 416
 417 void BufferView::Pimpl::selectionRequested()
 418 {
 419         static string sel;
 420
 421         if (!available())
 422                 return;
 423
 424         LyXText * text = bv_->getLyXText();
 425
 426         if (text->selection.set() &&
 427                 (!bv_->text->xsel_cache.set() ||
 428                  text->selection.start != bv_->text->xsel_cache.start ||
 429                  text->selection.end != bv_->text->xsel_cache.end))
 430         {
 431                 bv_->text->xsel_cache = text->selection;
 432                 sel = text->selectionAsString(bv_->buffer(), false);
 433         } else if (!text->selection.set()) {
 434                 sel = string();
 435                 bv_->text->xsel_cache.set(false);
 436         }
 437         if (!sel.empty()) {
 438                 workarea().putClipboard(sel);
 439         }
 440 }
 441
 442
 443 void BufferView::Pimpl::selectionLost()
 444 {
 445         if (available()) {
 446                 hideCursor();
 447                 toggleSelection();
 448                 bv_->getLyXText()->clearSelection();
 449                 showCursor();
 450                 bv_->text->xsel_cache.set(false);
 451         }
 452 }
 453
 454
 455 void BufferView::Pimpl::workAreaResize()
 456 {
 457         static int work_area_width;
 458         static int work_area_height;
 459
 460         bool const widthChange = workarea().workWidth() != work_area_width;
 461         bool const heightChange = workarea().workHeight() != work_area_height;
 462
 463         // update from work area
 464         work_area_width = workarea().workWidth();
 465         work_area_height = workarea().workHeight();
 466
 467         if (buffer_ != 0) {
 468                 if (widthChange) {
 469                         // The visible LyXView need a resize
 470                         resizeCurrentBuffer();
 471
 472                         // Remove all texts from the textcache
 473                         // This is not _really_ what we want to do. What
 474                         // we really want to do is to delete in textcache
 475                         // that does not have a BufferView with matching
 476                         // width, but as long as we have only one BufferView
 477                         // deleting all gives the same result.
 478                         if (lyxerr.debugging())
 479                                 textcache.show(lyxerr, "Expose delete all");
 480                         textcache.clear();
 481                         // FIXME: this is already done in resizeCurrentBuffer() ??
 482                         buffer_->resizeInsets(bv_);
 483                 } else if (heightChange) {
 484                         // fitCursor() ensures we don't jump back
 485                         // to the start of the document on vertical
 486                         // resize
 487                         fitCursor();
 488                 }
 489         }
 490
 491         if (widthChange || heightChange) {
 492                 repaint();
 493         }
 494
 495         // always make sure that the scrollbar is sane.
 496         updateScrollbar();
 497         owner_->updateLayoutChoice();
 498         return;
 499 }
 500
 501
 502 void BufferView::Pimpl::update()
 503 {
 504         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
 505                 LyXText::text_status st = bv_->text->status();
 506                 screen().update(bv_->text, bv_);
 507                 bool fitc = false;
 508                 while (bv_->text->status() == LyXText::CHANGED_IN_DRAW) {
 509                         bv_->text->fullRebreak(bv_);
 510                         st = LyXText::NEED_MORE_REFRESH;
 511                         bv_->text->setCursor(bv_, bv_->text->cursor.par(),
 512                                              bv_->text->cursor.pos());
 513                         if (bv_->text->selection.set()) {
 514                                 bv_->text->setCursor(bv_, bv_->text->selection.start,
 515                                                      bv_->text->selection.start.par(),
 516                                                      bv_->text->selection.start.pos());
 517                                 bv_->text->setCursor(bv_, bv_->text->selection.end,
 518                                                      bv_->text->selection.end.par(),
 519                                                      bv_->text->selection.end.pos());
 520                         }
 521                         fitc = true;
 522                         bv_->text->status(bv_, st);
 523                         screen().update(bv_->text, bv_);
 524                 }
 525                 // do this here instead of in the screen::update because of
 526                 // the above loop!
 527                 bv_->text->status(bv_, LyXText::UNCHANGED);
 528                 if (fitc)
 529                         fitCursor();
 530         }
 531 }
 532
 533 // Values used when calling update:
 534 // -3 - update
 535 // -2 - update, move sel_cursor if selection, fitcursor
 536 // -1 - update, move sel_cursor if selection, fitcursor, mark dirty
 537 //  0 - update, move sel_cursor if selection, fitcursor
 538 //  1 - update, move sel_cursor if selection, fitcursor, mark dirty
 539 //  3 - update, move sel_cursor if selection
 540 //
 541 // update -
 542 // a simple redraw of the parts that need refresh
 543 //
 544 // move sel_cursor if selection -
 545 // the text's sel_cursor is moved if there is selection is progress
 546 //
 547 // fitcursor -
 548 // fitCursor() is called and the scrollbar updated
 549 //
 550 // mark dirty -
 551 // the buffer is marked dirty.
 552 //
 553 // enum {
 554 //       UPDATE = 0,
 555 //       SELECT = 1,
 556 //       FITCUR = 2,
 557 //       CHANGE = 4
 558 // };
 559 //
 560 // UPDATE_ONLY = UPDATE;
 561 // UPDATE_SELECT = UPDATE | SELECT;
 562 // UPDATE_SELECT_MOVE = UPDATE | SELECT | FITCUR;
 563 // UPDATE_SELECT_MOVE_AFTER_CHANGE = UPDATE | SELECT | FITCUR | CHANGE;
 564 //
 565 // update(-3) -> update(0)         -> update(0) -> update(UPDATE)
 566 // update(-2) -> update(1 + 2)     -> update(3) -> update(SELECT|FITCUR)
 567 // update(-1) -> update(1 + 2 + 4) -> update(7) -> update(SELECT|FITCUR|CHANGE)
 568 // update(1)  -> update(1 + 2 + 4) -> update(7) -> update(SELECT|FITCUR|CHANGE)
 569 // update(3)  -> update(1)         -> update(1) -> update(SELECT)
 570
 571 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 572 {
 573         owner_->updateLayoutChoice();
 574
 575         if (!text->selection.set() && (f & SELECT)) {
 576                 text->selection.cursor = text->cursor;
 577         }
 578
 579         text->fullRebreak(bv_);
 580
 581         if (text->inset_owner) {
 582                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 583                 updateInset(text->inset_owner, false);
 584         } else {
 585                 update();
 586         }
 587
 588         if ((f & FITCUR)) {
 589                 fitCursor();
 590         }
 591
 592         if ((f & CHANGE)) {
 593                 buffer_->markDirty();
 594         }
 595 }
 596
 597
 598 // Callback for cursor timer
 599 void BufferView::Pimpl::cursorToggle()
 600 {
 601         if (!buffer_) {
 602                 cursor_timeout.restart();
 603                 return;
 604         }
 605
 606         if (!bv_->theLockingInset()) {
 607                 screen().cursorToggle(bv_);
 608         } else {
 609                 bv_->theLockingInset()->toggleInsetCursor(bv_);
 610         }
 611
 612         cursor_timeout.restart();
 613 }
 614
 615
 616 bool BufferView::Pimpl::available() const
 617 {
 618         if (buffer_ && bv_->text)
 619                 return true;
 620         return false;
 621 }
 622
 623
 624 void BufferView::Pimpl::beforeChange(LyXText * text)
 625 {
 626         toggleSelection();
 627         text->clearSelection();
 628 }
 629
 630
 631 void BufferView::Pimpl::savePosition(unsigned int i)
 632 {
 633         if (i >= saved_positions_num)
 634                 return;
 635         saved_positions[i] = Position(buffer_->fileName(),
 636                                       bv_->text->cursor.par()->id(),
 637                                       bv_->text->cursor.pos());
 638         if (i > 0) {
 639                 ostringstream str;
 640                 str << _("Saved bookmark") << ' ' << i;
 641                 owner_->message(str.str().c_str());
 642         }
 643 }
 644
 645
 646 void BufferView::Pimpl::restorePosition(unsigned int i)
 647 {
 648         if (i >= saved_positions_num)
 649                 return;
 650
 651         string const fname = saved_positions[i].filename;
 652
 653         beforeChange(bv_->text);
 654
 655         if (fname != buffer_->fileName()) {
 656                 Buffer * b = bufferlist.exists(fname) ?
 657                         bufferlist.getBuffer(fname) :
 658                         bufferlist.loadLyXFile(fname); // don't ask, just load it
 659                 if (b != 0) buffer(b);
 660         }
 661
 662         Paragraph * par = buffer_->getParFromID(saved_positions[i].par_id);
 663         if (!par)
 664                 return;
 665
 666         bv_->text->setCursor(bv_, par,
 667                              min(par->size(), saved_positions[i].par_pos));
 668
 669         update(bv_->text, BufferView::SELECT | BufferView::FITCUR);
 670         if (i > 0) {
 671                 ostringstream str;
 672                 str << _("Moved to bookmark") << ' ' << i;
 673                 owner_->message(str.str().c_str());
 674         }
 675 }
 676
 677
 678 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 679 {
 680         if (i >= saved_positions_num)
 681                 return false;
 682
 683         return !saved_positions[i].filename.empty();
 684 }
 685
 686
 687 void BufferView::Pimpl::switchKeyMap()
 688 {
 689         if (!lyxrc.rtl_support)
 690                 return;
 691
 692         LyXText * text = bv_->getLyXText();
 693         if (text->real_current_font.isRightToLeft()
 694             && !(bv_->theLockingInset()
 695                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 696         {
 697                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 698                         owner_->getIntl().KeyMapSec();
 699         } else {
 700                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 701                         owner_->getIntl().KeyMapPrim();
 702         }
 703 }
 704
 705
 706 void BufferView::Pimpl::insetUnlock()
 707 {
 708         if (bv_->theLockingInset()) {
 709                 bv_->theLockingInset()->insetUnlock(bv_);
 710                 bv_->theLockingInset(0);
 711                 finishUndo();
 712         }
 713 }
 714
 715
 716 void BufferView::Pimpl::showCursor()
 717 {
 718         if (bv_->theLockingInset())
 719                 bv_->theLockingInset()->showInsetCursor(bv_);
 720         else
 721                 screen().showCursor(bv_->text, bv_);
 722 }
 723
 724
 725 void BufferView::Pimpl::hideCursor()
 726 {
 727         if (!bv_->theLockingInset())
 728                 screen().hideCursor();
 729 }
 730
 731
 732 void BufferView::Pimpl::toggleSelection(bool b)
 733 {
 734         if (bv_->theLockingInset())
 735                 bv_->theLockingInset()->toggleSelection(bv_, b);
 736         screen().toggleSelection(bv_->text, bv_, b);
 737 }
 738
 739
 740 void BufferView::Pimpl::toggleToggle()
 741 {
 742         screen().toggleToggle(bv_->text, bv_);
 743 }
 744
 745
 746 void BufferView::Pimpl::center()
 747 {
 748         LyXText * t = bv_->text;
 749
 750         beforeChange(t);
 751         int const half_height = workarea().workHeight() / 2;
 752         int new_y = 0;
 753
 754         if (t->cursor.y() > half_height) {
 755                 new_y = t->cursor.y() - half_height;
 756         }
 757
 758         // FIXME: can we do this w/o calling screen directly ?
 759         // This updates first_y but means the fitCursor() call
 760         // from the update(FITCUR) doesn't realise that we might
 761         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 762         // the scrollbar to be updated as it should, so we have
 763         // to do it manually. Any operation that does a center()
 764         // and also might have moved first_y must make sure to call
 765         // updateScrollbar() currently. Never mind that this is a
 766         // pretty obfuscated way of updating t->first_y
 767         screen().draw(t, bv_, new_y);
 768
 769         update(t, BufferView::SELECT | BufferView::FITCUR);
 770 }
 771
 772
 773 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 774 {
 775         workarea().putClipboard(stuff);
 776 }
 777
 778
 779 /*
 780  * Dispatch functions for actions which can be valid for BufferView->text
 781  * and/or InsetText->text!!!
 782  */
 783
 784
 785 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 786 {
 787 #if 0
 788         LyXCursor cursor = bv_->getLyXText()->cursor;
 789         Buffer::inset_iterator it =
 790                 find_if(Buffer::inset_iterator(
 791                         cursor.par(), cursor.pos()),
 792                         buffer_->inset_iterator_end(),
 793                         lyx::compare_memfun(&Inset::lyxCode, code));
 794         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 795 #else
 796         // Ok, this is a little bit too brute force but it
 797         // should work for now. Better infrastructure is comming. (Lgb)
 798
 799         Buffer * b = bv_->buffer();
 800         LyXCursor cursor = bv_->getLyXText()->cursor;
 801
 802         Buffer::inset_iterator beg = b->inset_iterator_begin();
 803         Buffer::inset_iterator end = b->inset_iterator_end();
 804
 805         bool cursor_par_seen = false;
 806
 807         for (; beg != end; ++beg) {
 808                 if (beg.getPar() == cursor.par()) {
 809                         cursor_par_seen = true;
 810                 }
 811                 if (cursor_par_seen) {
 812                         if (beg.getPar() == cursor.par()
 813                             && beg.getPos() >= cursor.pos()) {
 814                                 break;
 815                         } else if (beg.getPar() != cursor.par()) {
 816                                 break;
 817                         }
 818                 }
 819
 820         }
 821         if (beg != end) {
 822                 // Now find the first inset that matches code.
 823                 for (; beg != end; ++beg) {
 824                         if (beg->lyxCode() == code) {
 825                                 return &(*beg);
 826                         }
 827                 }
 828         }
 829         return 0;
 830 #endif
 831 }
 832
 833
 834 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 835 {
 836         string filename = filen;
 837
 838         if (filename.empty()) {
 839                 // Launch a file browser
 840                 string initpath = lyxrc.document_path;
 841
 842                 if (available()) {
 843                         string const trypath = owner_->buffer()->filePath();
 844                         // If directory is writeable, use this as default.
 845                         if (IsDirWriteable(trypath))
 846                                 initpath = trypath;
 847                 }
 848
 849                 FileDialog fileDlg(bv_->owner(),
 850                                    _("Select LyX document to insert"),
 851                         LFUN_FILE_INSERT,
 852                         make_pair(string(_("Documents|#o#O")),
 853                                   string(lyxrc.document_path)),
 854                         make_pair(string(_("Examples|#E#e")),
 855                                   string(AddPath(system_lyxdir, "examples"))));
 856
 857                 FileDialog::Result result =
 858                         fileDlg.Select(initpath,
 859                                        _("*.lyx| LyX Documents (*.lyx)"));
 860
 861                 if (result.first == FileDialog::Later)
 862                         return;
 863
 864                 filename = result.second;
 865
 866                 // check selected filename
 867                 if (filename.empty()) {
 868                         owner_->message(_("Canceled."));
 869                         return;
 870                 }
 871         }
 872
 873         // get absolute path of file and add ".lyx" to the filename if
 874         // necessary
 875         filename = FileSearch(string(), filename, "lyx");
 876
 877         string const disp_fn(MakeDisplayPath(filename));
 878
 879         ostringstream s1;
 880         s1 << _("Inserting document") << ' '
 881            << disp_fn << " ...";
 882         owner_->message(s1.str().c_str());
 883         bool const res = bv_->insertLyXFile(filename);
 884         if (res) {
 885                 ostringstream str;
 886                 str << _("Document") << ' ' << disp_fn
 887                     << ' ' << _("inserted.");
 888                 owner_->message(str.str().c_str());
 889         } else {
 890                 ostringstream str;
 891                 str << _("Could not insert document") << ' '
 892                     << disp_fn;
 893                 owner_->message(str.str().c_str());
 894         }
 895 }
 896
 897
 898 bool BufferView::Pimpl::dispatch(FuncRequest const & ev)
 899 {
 900         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 901                 << " action[" << ev.action <<"]"
 902                 << " arg[" << ev.argument << "]"
 903                 << " x[" << ev.x << "]"
 904                 << " y[" << ev.y << "]"
 905                 << " button[" << ev.button() << "]"
 906                 << endl;
 907
 908         // e.g. Qt mouse press when no buffer
 909         if (!buffer_)
 910                 return false;
 911
 912         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
 913
 914         switch (ev.action) {
 915
 916         case LFUN_SCROLL_INSET:
 917                 // this is not handled here as this function is only active
 918                 // if we have a locking_inset and that one is (or contains)
 919                 // a tabular-inset
 920                 break;
 921
 922         case LFUN_INSET_GRAPHICS:
 923         {
 924                 Inset * new_inset = new InsetGraphics;
 925                 if (!insertInset(new_inset)) {
 926                         delete new_inset;
 927                 } else {
 928                         // this is need because you don't use a inset->Edit()
 929                         updateInset(new_inset, true);
 930                         new_inset->edit(bv_);
 931                 }
 932                 break;
 933         }
 934
 935         case LFUN_LAYOUT_COPY:
 936                 bv_->copyEnvironment();
 937                 break;
 938
 939         case LFUN_LAYOUT_PASTE:
 940                 bv_->pasteEnvironment();
 941                 switchKeyMap();
 942                 break;
 943
 944         case LFUN_DEPTH_MIN:
 945                 changeDepth(bv_, bv_->getLyXText(), -1);
 946                 break;
 947
 948         case LFUN_DEPTH_PLUS:
 949                 changeDepth(bv_, bv_->getLyXText(), 1);
 950                 break;
 951
 952         case LFUN_FREE:
 953                 owner_->getDialogs().setUserFreeFont();
 954                 break;
 955
 956         case LFUN_FILE_INSERT:
 957                 MenuInsertLyXFile(ev.argument);
 958                 break;
 959
 960         case LFUN_FILE_INSERT_ASCII_PARA:
 961                 InsertAsciiFile(bv_, ev.argument, true);
 962                 break;
 963
 964         case LFUN_FILE_INSERT_ASCII:
 965                 InsertAsciiFile(bv_, ev.argument, false);
 966                 break;
 967
 968         case LFUN_LANGUAGE:
 969                 lang(bv_, ev.argument);
 970                 switchKeyMap();
 971                 owner_->view_state_changed();
 972                 break;
 973
 974         case LFUN_EMPH:
 975                 emph(bv_);
 976                 owner_->view_state_changed();
 977                 break;
 978
 979         case LFUN_BOLD:
 980                 bold(bv_);
 981                 owner_->view_state_changed();
 982                 break;
 983
 984         case LFUN_NOUN:
 985                 noun(bv_);
 986                 owner_->view_state_changed();
 987                 break;
 988
 989         case LFUN_CODE:
 990                 code(bv_);
 991                 owner_->view_state_changed();
 992                 break;
 993
 994         case LFUN_SANS:
 995                 sans(bv_);
 996                 owner_->view_state_changed();
 997                 break;
 998
 999         case LFUN_ROMAN:
1000                 roman(bv_);
1001                 owner_->view_state_changed();
1002                 break;
1003
1004         case LFUN_DEFAULT:
1005                 styleReset(bv_);
1006                 owner_->view_state_changed();
1007                 break;
1008
1009         case LFUN_UNDERLINE:
1010                 underline(bv_);
1011                 owner_->view_state_changed();
1012                 break;
1013
1014         case LFUN_FONT_SIZE:
1015                 fontSize(bv_, ev.argument);
1016                 owner_->view_state_changed();
1017                 break;
1018
1019         case LFUN_FONT_STATE:
1020                 owner_->getLyXFunc().setMessage(currentState(bv_));
1021                 break;
1022
1023         case LFUN_INSERT_LABEL:
1024                 MenuInsertLabel(bv_, ev.argument);
1025                 break;
1026
1027         case LFUN_REF_INSERT:
1028                 if (ev.argument.empty()) {
1029                         InsetCommandParams p("ref");
1030                         owner_->getDialogs().createRef(p.getAsString());
1031                 } else {
1032                         InsetCommandParams p;
1033                         p.setFromString(ev.argument);
1034
1035                         InsetRef * inset = new InsetRef(p, *buffer_);
1036                         if (!insertInset(inset))
1037                                 delete inset;
1038                         else
1039                                 updateInset(inset, true);
1040                 }
1041                 break;
1042
1043         case LFUN_BOOKMARK_SAVE:
1044                 savePosition(strToUnsignedInt(ev.argument));
1045                 break;
1046
1047         case LFUN_BOOKMARK_GOTO:
1048                 restorePosition(strToUnsignedInt(ev.argument));
1049                 break;
1050
1051         case LFUN_REF_GOTO:
1052         {
1053                 string label = ev.argument;
1054                 if (label.empty()) {
1055                         InsetRef * inset =
1056                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1057                         if (inset) {
1058                                 label = inset->getContents();
1059                                 savePosition(0);
1060                         }
1061                 }
1062
1063                 if (!label.empty()) {
1064                         //bv_->savePosition(0);
1065                         if (!bv_->gotoLabel(label))
1066                                 Alert::alert(_("Error"),
1067                                            _("Couldn't find this label"),
1068                                            _("in current document."));
1069                 }
1070         }
1071         break;
1072
1073         // --- accented characters ---------------------------
1074
1075         case LFUN_UMLAUT:
1076         case LFUN_CIRCUMFLEX:
1077         case LFUN_GRAVE:
1078         case LFUN_ACUTE:
1079         case LFUN_TILDE:
1080         case LFUN_CEDILLA:
1081         case LFUN_MACRON:
1082         case LFUN_DOT:
1083         case LFUN_UNDERDOT:
1084         case LFUN_UNDERBAR:
1085         case LFUN_CARON:
1086         case LFUN_SPECIAL_CARON:
1087         case LFUN_BREVE:
1088         case LFUN_TIE:
1089         case LFUN_HUNG_UMLAUT:
1090         case LFUN_CIRCLE:
1091         case LFUN_OGONEK:
1092                 if (ev.argument.empty()) {
1093                         // As always...
1094                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1095                 } else {
1096                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1097                         owner_->getIntl().getTransManager()
1098                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1099                         update(bv_->getLyXText(),
1100                                BufferView::SELECT
1101                                | BufferView::FITCUR
1102                                | BufferView::CHANGE);
1103                 }
1104                 break;
1105
1106         case LFUN_MATH_MACRO:
1107         case LFUN_MATH_DELIM:
1108         case LFUN_INSERT_MATRIX:
1109         case LFUN_INSERT_MATH:
1110         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1111         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1112         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1113         case LFUN_GREEK:                 // Insert a single greek letter
1114                 mathDispatch(FuncRequest(bv_, ev.action, ev.argument));
1115                 break;
1116
1117         case LFUN_CITATION_INSERT:
1118         {
1119                 InsetCommandParams p;
1120                 p.setFromString(ev.argument);
1121
1122                 InsetCitation * inset = new InsetCitation(p);
1123                 if (!insertInset(inset))
1124                         delete inset;
1125                 else {
1126                         inset->setLoadingBuffer(bv_->buffer(), false);
1127                         updateInset(inset, true);
1128                 }
1129
1130         }
1131         break;
1132
1133         case LFUN_INSERT_BIBTEX:
1134         {
1135                 // ale970405+lasgoutt970425
1136                 // The argument can be up to two tokens separated
1137                 // by a space. The first one is the bibstyle.
1138                 string const db = token(ev.argument, ' ', 0);
1139                 string bibstyle = token(ev.argument, ' ', 1);
1140                 if (bibstyle.empty())
1141                         bibstyle = "plain";
1142
1143                 InsetCommandParams p("BibTeX", db, bibstyle);
1144                 InsetBibtex * inset = new InsetBibtex(p);
1145
1146                 if (insertInset(inset)) {
1147                         if (ev.argument.empty())
1148                                 inset->edit(bv_);
1149                 } else
1150                         delete inset;
1151         }
1152         break;
1153
1154         // BibTeX data bases
1155         case LFUN_BIBDB_ADD:
1156         {
1157                 InsetBibtex * inset =
1158                         static_cast<InsetBibtex*>(getInsetByCode(Inset::BIBTEX_CODE));
1159                 if (inset) {
1160                         inset->addDatabase(ev.argument);
1161                 }
1162         }
1163         break;
1164
1165         case LFUN_BIBDB_DEL:
1166         {
1167                 InsetBibtex * inset =
1168                         static_cast<InsetBibtex*>(getInsetByCode(Inset::BIBTEX_CODE));
1169                 if (inset)
1170                         inset->delDatabase(ev.argument);
1171         }
1172         break;
1173
1174         case LFUN_BIBTEX_STYLE:
1175         {
1176                 InsetBibtex * inset =
1177                         static_cast<InsetBibtex*>(getInsetByCode(Inset::BIBTEX_CODE));
1178                 if (inset)
1179                         inset->setOptions(ev.argument);
1180         }
1181         break;
1182
1183         case LFUN_CHILD_INSERT:
1184         {
1185                 InsetInclude::Params p;
1186                 if (!ev.argument.empty())
1187                         p.cparams.setFromString(ev.argument);
1188                 p.masterFilename_ = buffer_->fileName();
1189
1190                 InsetInclude * inset = new InsetInclude(p);
1191                 if (!insertInset(inset))
1192                         delete inset;
1193                 else {
1194                         updateInset(inset, true);
1195                         bv_->owner()->getDialogs().showInclude(inset);
1196                 }
1197         }
1198         break;
1199
1200         case LFUN_FLOAT_LIST:
1201                 if (tclass.floats().typeExist(ev.argument)) {
1202                         Inset * inset = new InsetFloatList(ev.argument);
1203                         if (!insertInset(inset, tclass.defaultLayoutName()))
1204                                 delete inset;
1205                 } else {
1206                         lyxerr << "Non-existent float type: "
1207                                << ev.argument << endl;
1208                 }
1209                 break;
1210
1211         case LFUN_THESAURUS_ENTRY:
1212         {
1213                 string arg = ev.argument;
1214
1215                 if (arg.empty()) {
1216                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1217                                                                    false);
1218
1219                         // FIXME
1220                         if (arg.size() > 100 || arg.empty()) {
1221                                 // Get word or selection
1222                                 bv_->getLyXText()->selectWordWhenUnderCursor(bv_, LyXText::WHOLE_WORD);
1223                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1224                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1225                         }
1226                 }
1227
1228                 bv_->owner()->getDialogs().showThesaurus(arg);
1229         }
1230                 break;
1231
1232         case LFUN_UNKNOWN_ACTION:
1233                 ev.errorMessage(N_("Unknown function!"));
1234                 break;
1235
1236         default:
1237                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1238         } // end of switch
1239
1240         return true;
1241 }
1242
1243
1244 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1245 {
1246         // if we are in a locking inset we should try to insert the
1247         // inset there otherwise this is a illegal function now
1248         if (bv_->theLockingInset()) {
1249                 if (bv_->theLockingInset()->insetAllowed(inset))
1250                         return bv_->theLockingInset()->insertInset(bv_, inset);
1251                 return false;
1252         }
1253
1254         // not quite sure if we want this...
1255         setCursorParUndo(bv_);
1256         freezeUndo();
1257
1258         beforeChange(bv_->text);
1259         if (!lout.empty()) {
1260                 update(bv_->text, BufferView::SELECT|BufferView::FITCUR);
1261                 bv_->text->breakParagraph(bv_);
1262                 update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1263
1264                 if (!bv_->text->cursor.par()->empty()) {
1265                         bv_->text->cursorLeft(bv_);
1266
1267                         bv_->text->breakParagraph(bv_);
1268                         update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1269                 }
1270
1271                 string lres = lout;
1272                 LyXTextClass const & tclass =
1273                         buffer_->params.getLyXTextClass();
1274                 bool hasLayout = tclass.hasLayout(lres);
1275                 string lay = tclass.defaultLayoutName();
1276
1277                 if (hasLayout != false) {
1278                         // layout found
1279                         lay = lres;
1280                 } else {
1281                         // layout not fount using default
1282                         lay = tclass.defaultLayoutName();
1283                 }
1284
1285                 bv_->text->setLayout(bv_, lay);
1286
1287                 bv_->text->setParagraph(bv_, 0, 0,
1288                                    0, 0,
1289                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1290                                    Spacing(),
1291                                    LYX_ALIGN_LAYOUT,
1292                                    string(),
1293                                    0);
1294                 update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1295         }
1296
1297         bv_->text->insertInset(bv_, inset);
1298         update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1299
1300         unFreezeUndo();
1301         return true;
1302 }
1303
1304
1305 void BufferView::Pimpl::updateInset(Inset * inset, bool mark_dirty)
1306 {
1307         if (!inset || !available())
1308                 return;
1309
1310         // first check for locking insets
1311         if (bv_->theLockingInset()) {
1312                 if (bv_->theLockingInset() == inset) {
1313                         if (bv_->text->updateInset(bv_, inset)) {
1314                                 update();
1315                                 if (mark_dirty) {
1316                                         buffer_->markDirty();
1317                                 }
1318                                 updateScrollbar();
1319                                 return;
1320                         }
1321                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1322                         if (bv_->text->updateInset(bv_,  bv_->theLockingInset())) {
1323                                 update();
1324                                 if (mark_dirty) {
1325                                         buffer_->markDirty();
1326                                 }
1327                                 updateScrollbar();
1328                                 return;
1329                         }
1330                 }
1331         }
1332
1333         // then check if the inset is a top_level inset (has no owner)
1334         // if yes do the update as always otherwise we have to update the
1335         // toplevel inset where this inset is inside
1336         Inset * tl_inset = inset;
1337         while (tl_inset->owner())
1338                 tl_inset = tl_inset->owner();
1339         hideCursor();
1340         if (tl_inset == inset) {
1341                 update(bv_->text, BufferView::UPDATE);
1342                 if (bv_->text->updateInset(bv_, inset)) {
1343                         if (mark_dirty) {
1344                                 update(bv_->text,
1345                                        BufferView::SELECT
1346                                        | BufferView::FITCUR
1347                                        | BufferView::CHANGE);
1348                         } else {
1349                                 update(bv_->text, SELECT);
1350                         }
1351                         return;
1352                 }
1353         } else if (static_cast<UpdatableInset *>(tl_inset)
1354                            ->updateInsetInInset(bv_, inset))
1355         {
1356                 if (bv_->text->updateInset(bv_, tl_inset)) {
1357                         update();
1358                         updateScrollbar();
1359                 }
1360         }
1361 }