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 #include "BufferView_pimpl.h"
  12 #include "bufferlist.h"
  13 #include "bufferview_funcs.h"
  14 #include "commandtags.h"
  15 #include "debug.h"
  16 #include "factory.h"
  17 #include "FloatList.h"
  18 #include "funcrequest.h"
  19 #include "gettext.h"
  20 #include "intl.h"
  21 #include "iterators.h"
  22 #include "lyx_cb.h" // added for Dispatch functions
  23 #include "lyx_main.h"
  24 #include "lyxfind.h"
  25 #include "lyxfunc.h"
  26 #include "lyxtext.h"
  27 #include "lyxrc.h"
  28 #include "lyxrow.h"
  29 #include "paragraph.h"
  30 #include "ParagraphParameters.h"
  31 #include "TextCache.h"
  32 #include "undo_funcs.h"
  33
  34 #include "insets/insetfloatlist.h"
  35 #include "insets/insetgraphics.h"
  36 #include "insets/insetinclude.h"
  37 #include "insets/insetref.h"
  38 #include "insets/insettext.h"
  39
  40 #include "frontends/Alert.h"
  41 #include "frontends/Dialogs.h"
  42 #include "frontends/FileDialog.h"
  43 #include "frontends/LyXView.h"
  44 #include "frontends/LyXScreenFactory.h"
  45 #include "frontends/mouse_state.h"
  46 #include "frontends/screen.h"
  47 #include "frontends/WorkArea.h"
  48 #include "frontends/WorkAreaFactory.h"
  49
  50 #include "mathed/formulabase.h"
  51
  52 #include "graphics/Previews.h"
  53
  54 #include "support/LAssert.h"
  55 #include "support/lstrings.h"
  56 #include "support/filetools.h"
  57
  58 #include <boost/bind.hpp>
  59 #include <boost/signals/connection.hpp>
  60 #include "BoostFormat.h"
  61
  62 #include <unistd.h>
  63 #include <sys/wait.h>
  64
  65
  66 using std::vector;
  67 using std::find_if;
  68 using std::find;
  69 using std::pair;
  70 using std::endl;
  71 using std::make_pair;
  72 using std::min;
  73
  74 using lyx::pos_type;
  75
  76 extern BufferList bufferlist;
  77
  78
  79 namespace {
  80
  81 unsigned int const saved_positions_num = 20;
  82
  83 // All the below connection objects are needed because of a bug in some
  84 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  85 // to these connections we avoid a segfault upon startup, and also at exit.
  86 // (Lgb)
  87
  88 boost::signals::connection dispatchcon;
  89 boost::signals::connection timecon;
  90 boost::signals::connection doccon;
  91 boost::signals::connection resizecon;
  92 boost::signals::connection kpresscon;
  93 boost::signals::connection selectioncon;
  94 boost::signals::connection lostcon;
  95
  96
  97 } // anon namespace
  98
  99
 100 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 101              int xpos, int ypos, int width, int height)
 102         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 103           using_xterm_cursor(false)
 104 {
 105         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 106         screen_.reset(LyXScreenFactory::create(workarea()));
 107
 108         // Setup the signals
 109         doccon = workarea().scrollDocView
 110                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 111         resizecon = workarea().workAreaResize
 112                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 113         dispatchcon = workarea().dispatch
 114                 .connect(boost::bind(&BufferView::Pimpl::dispatch, this, _1));
 115         kpresscon = workarea().workAreaKeyPress
 116                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 117         selectioncon = workarea().selectionRequested
 118                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 119         lostcon = workarea().selectionLost
 120                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 121
 122         timecon = cursor_timeout.timeout
 123                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 124         cursor_timeout.start();
 125         saved_positions.resize(saved_positions_num);
 126 }
 127
 128
 129 WorkArea & BufferView::Pimpl::workarea() const
 130 {
 131         return *workarea_.get();
 132 }
 133
 134
 135 LyXScreen & BufferView::Pimpl::screen() const
 136 {
 137         return *screen_.get();
 138 }
 139
 140
 141 Painter & BufferView::Pimpl::painter() const
 142 {
 143         return workarea().getPainter();
 144 }
 145
 146
 147 void BufferView::Pimpl::buffer(Buffer * b)
 148 {
 149         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 150                             << b << ')' << endl;
 151         if (buffer_) {
 152                 buffer_->delUser(bv_);
 153
 154                 // Put the old text into the TextCache, but
 155                 // only if the buffer is still loaded.
 156                 // Also set the owner of the test to 0
 157                 //              bv_->text->owner(0);
 158                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 159                 if (lyxerr.debugging())
 160                         textcache.show(lyxerr, "BufferView::buffer");
 161
 162                 bv_->text = 0;
 163         }
 164
 165         // set current buffer
 166         buffer_ = b;
 167
 168         // if we're quitting lyx, don't bother updating stuff
 169         if (quitting)
 170                 return;
 171
 172         // if we are closing the buffer, use the first buffer as current
 173         if (!buffer_) {
 174                 buffer_ = bufferlist.first();
 175         }
 176
 177         if (buffer_) {
 178                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 179                 buffer_->addUser(bv_);
 180
 181                 // If we don't have a text object for this, we make one
 182                 if (bv_->text == 0) {
 183                         resizeCurrentBuffer();
 184                 }
 185
 186                 // FIXME: needed when ?
 187                 bv_->text->top_y(screen().topCursorVisible(bv_->text->cursor, bv_->text->top_y()));
 188
 189                 // Similarly, buffer-dependent dialogs should be updated or
 190                 // hidden. This should go here because some dialogs (eg ToC)
 191                 // require bv_->text.
 192                 owner_->getDialogs().updateBufferDependent(true);
 193         } else {
 194                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 195                 owner_->getDialogs().hideBufferDependent();
 196
 197                 // Also remove all remaining text's from the testcache.
 198                 // (there should not be any!) (if there is any it is a
 199                 // bug!)
 200                 if (lyxerr.debugging())
 201                         textcache.show(lyxerr, "buffer delete all");
 202                 textcache.clear();
 203         }
 204
 205         repaint();
 206         updateScrollbar();
 207         owner_->updateMenubar();
 208         owner_->updateToolbar();
 209         owner_->updateLayoutChoice();
 210         owner_->updateWindowTitle();
 211
 212         if (grfx::Previews::activated() && buffer_)
 213                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 214 }
 215
 216
 217 bool BufferView::Pimpl::fitCursor()
 218 {
 219         bool ret;
 220
 221         if (bv_->theLockingInset()) {
 222                 bv_->theLockingInset()->fitInsetCursor(bv_);
 223                 ret = true;
 224         } else {
 225                 ret = screen().fitCursor(bv_->text, bv_);
 226         }
 227
 228         dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 229
 230         if (ret)
 231                 updateScrollbar();
 232         return ret;
 233 }
 234
 235
 236 void BufferView::Pimpl::redoCurrentBuffer()
 237 {
 238         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 239         if (buffer_ && bv_->text) {
 240                 resizeCurrentBuffer();
 241                 updateScrollbar();
 242                 owner_->updateLayoutChoice();
 243                 repaint();
 244         }
 245 }
 246
 247
 248 int BufferView::Pimpl::resizeCurrentBuffer()
 249 {
 250         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 251
 252         Paragraph * par = 0;
 253         Paragraph * selstartpar = 0;
 254         Paragraph * selendpar = 0;
 255         UpdatableInset * the_locking_inset = 0;
 256
 257         pos_type pos = 0;
 258         pos_type selstartpos = 0;
 259         pos_type selendpos = 0;
 260         bool selection = false;
 261         bool mark_set  = false;
 262
 263         owner_->busy(true);
 264
 265         owner_->message(_("Formatting document..."));
 266
 267         if (bv_->text) {
 268                 par = bv_->text->cursor.par();
 269                 pos = bv_->text->cursor.pos();
 270                 selstartpar = bv_->text->selection.start.par();
 271                 selstartpos = bv_->text->selection.start.pos();
 272                 selendpar = bv_->text->selection.end.par();
 273                 selendpos = bv_->text->selection.end.pos();
 274                 selection = bv_->text->selection.set();
 275                 mark_set = bv_->text->selection.mark();
 276                 the_locking_inset = bv_->theLockingInset();
 277                 buffer_->resizeInsets(bv_);
 278                 // I don't think the delete and new are necessary here we just could
 279                 // call only init! (Jug 20020419)
 280                 delete bv_->text;
 281                 bv_->text = new LyXText(bv_);
 282                 bv_->text->init(bv_);
 283         } else {
 284                 // See if we have a text in TextCache that fits
 285                 // the new buffer_ with the correct width.
 286                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 287                 if (bv_->text) {
 288                         if (lyxerr.debugging()) {
 289                                 lyxerr << "Found a LyXText that fits:\n";
 290                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 291                         }
 292                         // Set the owner of the newly found text
 293                         //      bv_->text->owner(bv_);
 294                         if (lyxerr.debugging())
 295                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 296
 297                         buffer_->resizeInsets(bv_);
 298                 } else {
 299                         bv_->text = new LyXText(bv_);
 300                         bv_->text->init(bv_);
 301                         //buffer_->resizeInsets(bv_);
 302                 }
 303         }
 304
 305         if (par) {
 306                 bv_->text->selection.set(true);
 307                 // At this point just to avoid the Delete-Empty-Paragraph-
 308                 // Mechanism when setting the cursor.
 309                 bv_->text->selection.mark(mark_set);
 310                 if (selection) {
 311                         bv_->text->setCursor(selstartpar, selstartpos);
 312                         bv_->text->selection.cursor = bv_->text->cursor;
 313                         bv_->text->setCursor(selendpar, selendpos);
 314                         bv_->text->setSelection();
 315                         bv_->text->setCursor(par, pos);
 316                 } else {
 317                         bv_->text->setCursor(par, pos);
 318                         bv_->text->selection.cursor = bv_->text->cursor;
 319                         bv_->text->selection.set(false);
 320                 }
 321                 // remake the inset locking
 322                 bv_->theLockingInset(the_locking_inset);
 323         }
 324
 325         bv_->text->top_y(screen().topCursorVisible(bv_->text->cursor, bv_->text->top_y()));
 326
 327         switchKeyMap();
 328         owner_->busy(false);
 329
 330         updateScrollbar();
 331
 332         return 0;
 333 }
 334
 335
 336 void BufferView::Pimpl::repaint()
 337 {
 338         // Regenerate the screen.
 339         screen().redraw(bv_->text, bv_);
 340 }
 341
 342
 343 void BufferView::Pimpl::updateScrollbar()
 344 {
 345         if (!bv_->text) {
 346                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 347                 workarea().setScrollbarParams(0, 0, 0);
 348                 return;
 349         }
 350
 351         LyXText const & t = *bv_->text;
 352
 353         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 354                 << t.top_y() << ", default height " << defaultRowHeight() << endl;
 355
 356         workarea().setScrollbarParams(t.height, t.top_y(), defaultRowHeight());
 357 }
 358
 359
 360 void BufferView::Pimpl::scrollDocView(int value)
 361 {
 362         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 363
 364         if (!buffer_)
 365                 return;
 366
 367         screen().draw(bv_->text, bv_, value);
 368
 369         if (!lyxrc.cursor_follows_scrollbar)
 370                 return;
 371
 372         LyXText * vbt = bv_->text;
 373
 374         int const height = defaultRowHeight();
 375         int const first = static_cast<int>((bv_->text->top_y() + height));
 376         int const last = static_cast<int>((bv_->text->top_y() + workarea().workHeight() - height));
 377
 378         if (vbt->cursor.y() < first)
 379                 vbt->setCursorFromCoordinates(0, first);
 380         else if (vbt->cursor.y() > last)
 381                 vbt->setCursorFromCoordinates(0, last);
 382
 383         owner_->updateLayoutChoice();
 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 = defaultRowHeight();
 395
 396         // The new absolute coordinate
 397         int new_top_y = t->top_y() + lines * line_height;
 398
 399         // Restrict to a valid value
 400         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 401         new_top_y = std::max(0, new_top_y);
 402
 403         scrollDocView(new_top_y);
 404
 405         // Update the scrollbar.
 406         workarea().setScrollbarParams(t->height, t->top_y(), defaultRowHeight());
 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                 screen().update(*bv_);
 506                 bool fitc = false;
 507                 while (bv_->text->status() == LyXText::CHANGED_IN_DRAW) {
 508                         bv_->text->fullRebreak();
 509                         bv_->text->setCursor(bv_->text->cursor.par(),
 510                                              bv_->text->cursor.pos());
 511                         if (bv_->text->selection.set()) {
 512                                 bv_->text->setCursor(bv_->text->selection.start,
 513                                                      bv_->text->selection.start.par(),
 514                                                      bv_->text->selection.start.pos());
 515                                 bv_->text->setCursor(bv_->text->selection.end,
 516                                                      bv_->text->selection.end.par(),
 517                                                      bv_->text->selection.end.pos());
 518                         }
 519                         fitc = true;
 520                         bv_->text->postPaint(0);
 521                         screen().update(*bv_);
 522                 }
 523
 524                 // do this here instead of in the screen::update because of
 525                 // the above loop!
 526                 bv_->text->clearPaint();
 527
 528                 if (fitc)
 529                         fitCursor();
 530         }
 531 }
 532
 533
 534 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 535 {
 536         if (!text->selection.set() && (f & SELECT)) {
 537                 text->selection.cursor = text->cursor;
 538         }
 539
 540         text->fullRebreak();
 541
 542         if (text->inset_owner) {
 543                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 544                 updateInset(text->inset_owner);
 545         } else {
 546                 update();
 547         }
 548 }
 549
 550
 551 void BufferView::Pimpl::update(BufferView::UpdateCodes f)
 552 {
 553         LyXText * text = bv_->text;
 554
 555         if (!text->selection.set() && (f & SELECT)) {
 556                 text->selection.cursor = text->cursor;
 557         }
 558
 559         text->fullRebreak();
 560
 561         if (text->inset_owner) {
 562                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 563                 updateInset(text->inset_owner);
 564         } else {
 565                 update();
 566         }
 567 }
 568
 569
 570 // Callback for cursor timer
 571 void BufferView::Pimpl::cursorToggle()
 572 {
 573         if (!buffer_) {
 574                 cursor_timeout.restart();
 575                 return;
 576         }
 577
 578         if (!bv_->theLockingInset()) {
 579                 screen().cursorToggle(bv_);
 580         } else {
 581                 bv_->theLockingInset()->toggleInsetCursor(bv_);
 582         }
 583
 584         cursor_timeout.restart();
 585 }
 586
 587
 588 bool BufferView::Pimpl::available() const
 589 {
 590         if (buffer_ && bv_->text)
 591                 return true;
 592         return false;
 593 }
 594
 595
 596 Change const BufferView::Pimpl::getCurrentChange()
 597 {
 598         if (!bv_->buffer()->params.tracking_changes)
 599                 return Change(Change::UNCHANGED);
 600
 601         LyXText * t(bv_->getLyXText());
 602
 603         if (!t->selection.set())
 604                 return Change(Change::UNCHANGED);
 605
 606         LyXCursor const & cur(t->selection.start);
 607         return cur.par()->lookupChangeFull(cur.pos());
 608 }
 609
 610
 611 void BufferView::Pimpl::beforeChange(LyXText * text)
 612 {
 613         toggleSelection();
 614         text->clearSelection();
 615 }
 616
 617
 618 void BufferView::Pimpl::savePosition(unsigned int i)
 619 {
 620         if (i >= saved_positions_num)
 621                 return;
 622         saved_positions[i] = Position(buffer_->fileName(),
 623                                       bv_->text->cursor.par()->id(),
 624                                       bv_->text->cursor.pos());
 625         if (i > 0) {
 626                 ostringstream str;
 627 #if USE_BOOST_FORMAT
 628                 str << boost::format(_("Saved bookmark %1$d")) % i;
 629 #else
 630                 str << _("Saved bookmark ") << i;
 631 #endif
 632                 owner_->message(STRCONV(str.str()));
 633         }
 634 }
 635
 636
 637 void BufferView::Pimpl::restorePosition(unsigned int i)
 638 {
 639         if (i >= saved_positions_num)
 640                 return;
 641
 642         string const fname = saved_positions[i].filename;
 643
 644         beforeChange(bv_->text);
 645
 646         if (fname != buffer_->fileName()) {
 647                 Buffer * b = bufferlist.exists(fname) ?
 648                         bufferlist.getBuffer(fname) :
 649                         bufferlist.loadLyXFile(fname); // don't ask, just load it
 650                 if (b != 0) buffer(b);
 651         }
 652
 653         Paragraph * par = buffer_->getParFromID(saved_positions[i].par_id);
 654         if (!par)
 655                 return;
 656
 657         bv_->text->setCursor(par,
 658                              min(par->size(), saved_positions[i].par_pos));
 659
 660         update(BufferView::SELECT);
 661         if (i > 0) {
 662                 ostringstream str;
 663 #if USE_BOOST_FORMAT
 664                 str << boost::format(_("Moved to bookmark %1$d")) % i;
 665 #else
 666                 str << _("Moved to bookmark ") << i;
 667 #endif
 668                 owner_->message(STRCONV(str.str()));
 669         }
 670 }
 671
 672
 673 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 674 {
 675         if (i >= saved_positions_num)
 676                 return false;
 677
 678         return !saved_positions[i].filename.empty();
 679 }
 680
 681
 682 void BufferView::Pimpl::switchKeyMap()
 683 {
 684         if (!lyxrc.rtl_support)
 685                 return;
 686
 687         LyXText * text = bv_->getLyXText();
 688         if (text->real_current_font.isRightToLeft()
 689             && !(bv_->theLockingInset()
 690                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 691         {
 692                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 693                         owner_->getIntl().KeyMapSec();
 694         } else {
 695                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 696                         owner_->getIntl().KeyMapPrim();
 697         }
 698 }
 699
 700
 701 void BufferView::Pimpl::insetUnlock()
 702 {
 703         if (bv_->theLockingInset()) {
 704                 bv_->theLockingInset()->insetUnlock(bv_);
 705                 bv_->theLockingInset(0);
 706                 finishUndo();
 707         }
 708 }
 709
 710
 711 void BufferView::Pimpl::showCursor()
 712 {
 713         if (bv_->theLockingInset())
 714                 bv_->theLockingInset()->showInsetCursor(bv_);
 715         else
 716                 screen().showCursor(bv_->text, bv_);
 717 }
 718
 719
 720 void BufferView::Pimpl::hideCursor()
 721 {
 722         if (!bv_->theLockingInset())
 723                 screen().hideCursor();
 724 }
 725
 726
 727 void BufferView::Pimpl::toggleSelection(bool b)
 728 {
 729         if (bv_->theLockingInset())
 730                 bv_->theLockingInset()->toggleSelection(bv_, b);
 731         screen().toggleSelection(bv_->text, bv_, b);
 732 }
 733
 734
 735 void BufferView::Pimpl::toggleToggle()
 736 {
 737         screen().toggleToggle(bv_->text, bv_);
 738 }
 739
 740
 741 void BufferView::Pimpl::center()
 742 {
 743         LyXText * t = bv_->text;
 744
 745         beforeChange(t);
 746         int const half_height = workarea().workHeight() / 2;
 747         int new_y = 0;
 748
 749         if (t->cursor.y() > half_height) {
 750                 new_y = t->cursor.y() - half_height;
 751         }
 752
 753         // FIXME: look at this comment again ...
 754
 755         // FIXME: can we do this w/o calling screen directly ?
 756         // This updates top_y() but means the fitCursor() call
 757         // from the update(FITCUR) doesn't realise that we might
 758         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 759         // the scrollbar to be updated as it should, so we have
 760         // to do it manually. Any operation that does a center()
 761         // and also might have moved top_y() must make sure to call
 762         // updateScrollbar() currently. Never mind that this is a
 763         // pretty obfuscated way of updating t->top_y()
 764         screen().draw(t, bv_, new_y);
 765
 766         update(BufferView::SELECT);
 767 }
 768
 769
 770 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 771 {
 772         workarea().putClipboard(stuff);
 773 }
 774
 775
 776 /*
 777  * Dispatch functions for actions which can be valid for BufferView->text
 778  * and/or InsetText->text!!!
 779  */
 780
 781
 782 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 783 {
 784 #if 0
 785         LyXCursor cursor = bv_->getLyXText()->cursor;
 786         Buffer::inset_iterator it =
 787                 find_if(Buffer::inset_iterator(
 788                         cursor.par(), cursor.pos()),
 789                         buffer_->inset_iterator_end(),
 790                         lyx::compare_memfun(&Inset::lyxCode, code));
 791         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 792 #else
 793         // Ok, this is a little bit too brute force but it
 794         // should work for now. Better infrastructure is comming. (Lgb)
 795
 796         Buffer * b = bv_->buffer();
 797         LyXCursor cursor = bv_->getLyXText()->cursor;
 798
 799         Buffer::inset_iterator beg = b->inset_iterator_begin();
 800         Buffer::inset_iterator end = b->inset_iterator_end();
 801
 802         bool cursor_par_seen = false;
 803
 804         for (; beg != end; ++beg) {
 805                 if (beg.getPar() == cursor.par()) {
 806                         cursor_par_seen = true;
 807                 }
 808                 if (cursor_par_seen) {
 809                         if (beg.getPar() == cursor.par()
 810                             && beg.getPos() >= cursor.pos()) {
 811                                 break;
 812                         } else if (beg.getPar() != cursor.par()) {
 813                                 break;
 814                         }
 815                 }
 816
 817         }
 818         if (beg != end) {
 819                 // Now find the first inset that matches code.
 820                 for (; beg != end; ++beg) {
 821                         if (beg->lyxCode() == code) {
 822                                 return &(*beg);
 823                         }
 824                 }
 825         }
 826         return 0;
 827 #endif
 828 }
 829
 830
 831 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 832 {
 833         string filename = filen;
 834
 835         if (filename.empty()) {
 836                 // Launch a file browser
 837                 string initpath = lyxrc.document_path;
 838
 839                 if (available()) {
 840                         string const trypath = owner_->buffer()->filePath();
 841                         // If directory is writeable, use this as default.
 842                         if (IsDirWriteable(trypath))
 843                                 initpath = trypath;
 844                 }
 845
 846                 FileDialog fileDlg(_("Select LyX document to insert"),
 847                         LFUN_FILE_INSERT,
 848                         make_pair(string(_("Documents|#o#O")),
 849                                   string(lyxrc.document_path)),
 850                         make_pair(string(_("Examples|#E#e")),
 851                                   string(AddPath(system_lyxdir, "examples"))));
 852
 853                 FileDialog::Result result =
 854                         fileDlg.open(initpath,
 855                                        _("*.lyx| LyX Documents (*.lyx)"));
 856
 857                 if (result.first == FileDialog::Later)
 858                         return;
 859
 860                 filename = result.second;
 861
 862                 // check selected filename
 863                 if (filename.empty()) {
 864                         owner_->message(_("Canceled."));
 865                         return;
 866                 }
 867         }
 868
 869         // get absolute path of file and add ".lyx" to the filename if
 870         // necessary
 871         filename = FileSearch(string(), filename, "lyx");
 872
 873         string const disp_fn(MakeDisplayPath(filename));
 874
 875         ostringstream s1;
 876 #if USE_BOOST_FORMAT
 877         s1 << boost::format(_("Inserting document %1$s...")) % disp_fn;
 878 #else
 879         s1 << _("Inserting document ") << disp_fn << _("...");
 880 #endif
 881         owner_->message(STRCONV(s1.str()));
 882         bool const res = bv_->insertLyXFile(filename);
 883         if (res) {
 884                 ostringstream str;
 885 #if USE_BOOST_FORMAT
 886                 str << boost::format(_("Document %1$s inserted.")) % disp_fn;
 887 #else
 888                 str << _("Document ") << disp_fn << _(" inserted.");
 889 #endif
 890                 owner_->message(STRCONV(str.str()));
 891         } else {
 892                 ostringstream str;
 893 #if USE_BOOST_FORMAT
 894                 str << boost::format(_("Could not insert document %1$s")) % disp_fn;
 895 #else
 896                 str << _("Could not insert document ") << disp_fn;
 897 #endif
 898                 owner_->message(STRCONV(str.str()));
 899         }
 900 }
 901
 902
 903 void BufferView::Pimpl::trackChanges()
 904 {
 905         Buffer * buf(bv_->buffer());
 906         bool const tracking(buf->params.tracking_changes);
 907
 908         if (!tracking) {
 909                 ParIterator const end = buf->par_iterator_end();
 910                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it) {
 911                         (*it)->trackChanges();
 912                 }
 913                 buf->params.tracking_changes = true;
 914
 915                 // we cannot allow undos beyond the freeze point
 916                 buf->undostack.clear();
 917         } else {
 918                 update(BufferView::SELECT);
 919                 bv_->text->setCursor(&(*buf->paragraphs.begin()), 0);
 920 #warning changes FIXME
 921                 //moveCursorUpdate(false);
 922
 923                 bool found = lyxfind::findNextChange(bv_);
 924                 if (found) {
 925                         owner_->getDialogs().show("changes");
 926                         return;
 927                 }
 928
 929                 ParIterator const end = buf->par_iterator_end();
 930                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it) {
 931                         (*it)->untrackChanges();
 932                 }
 933                 buf->params.tracking_changes = false;
 934         }
 935
 936         buf->redostack.clear();
 937 }
 938
 939
 940 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
 941 {
 942         // Make sure that the cached BufferView is correct.
 943         FuncRequest ev = ev_in;
 944         ev.setView(bv_);
 945
 946         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 947                 << " action[" << ev.action << ']'
 948                 << " arg[" << ev.argument << ']'
 949                 << " x[" << ev.x << ']'
 950                 << " y[" << ev.y << ']'
 951                 << " button[" << ev.button() << ']'
 952                 << endl;
 953
 954         // e.g. Qt mouse press when no buffer
 955         if (!buffer_)
 956                 return false;
 957
 958         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
 959
 960         switch (ev.action) {
 961
 962         case LFUN_SCROLL_INSET:
 963                 // this is not handled here as this function is only active
 964                 // if we have a locking_inset and that one is (or contains)
 965                 // a tabular-inset
 966                 break;
 967
 968         case LFUN_LAYOUT_COPY:
 969                 bv_->copyEnvironment();
 970                 break;
 971
 972         case LFUN_LAYOUT_PASTE:
 973                 bv_->pasteEnvironment();
 974                 switchKeyMap();
 975                 break;
 976
 977         case LFUN_FILE_INSERT:
 978                 MenuInsertLyXFile(ev.argument);
 979                 break;
 980
 981         case LFUN_FILE_INSERT_ASCII_PARA:
 982                 InsertAsciiFile(bv_, ev.argument, true);
 983                 break;
 984
 985         case LFUN_FILE_INSERT_ASCII:
 986                 InsertAsciiFile(bv_, ev.argument, false);
 987                 break;
 988
 989         case LFUN_LANGUAGE:
 990                 lang(bv_, ev.argument);
 991                 switchKeyMap();
 992                 owner_->view_state_changed();
 993                 break;
 994
 995         case LFUN_EMPH:
 996                 emph(bv_);
 997                 owner_->view_state_changed();
 998                 break;
 999
1000         case LFUN_BOLD:
1001                 bold(bv_);
1002                 owner_->view_state_changed();
1003                 break;
1004
1005         case LFUN_NOUN:
1006                 noun(bv_);
1007                 owner_->view_state_changed();
1008                 break;
1009
1010         case LFUN_CODE:
1011                 code(bv_);
1012                 owner_->view_state_changed();
1013                 break;
1014
1015         case LFUN_SANS:
1016                 sans(bv_);
1017                 owner_->view_state_changed();
1018                 break;
1019
1020         case LFUN_ROMAN:
1021                 roman(bv_);
1022                 owner_->view_state_changed();
1023                 break;
1024
1025         case LFUN_DEFAULT:
1026                 styleReset(bv_);
1027                 owner_->view_state_changed();
1028                 break;
1029
1030         case LFUN_UNDERLINE:
1031                 underline(bv_);
1032                 owner_->view_state_changed();
1033                 break;
1034
1035         case LFUN_FONT_SIZE:
1036                 fontSize(bv_, ev.argument);
1037                 owner_->view_state_changed();
1038                 break;
1039
1040         case LFUN_FONT_STATE:
1041                 owner_->getLyXFunc().setMessage(currentState(bv_));
1042                 break;
1043
1044         case LFUN_INSERT_LABEL: {
1045                 // Try and generate a valid label
1046                 string const contents = ev.argument.empty() ?
1047                         getPossibleLabel(*bv_) : ev.argument;
1048                 InsetCommandParams icp("label", contents);
1049                 string data = InsetCommandMailer::params2string("label", icp);
1050                 owner_->getDialogs().show("label", data, 0);
1051         }
1052         break;
1053
1054         case LFUN_BOOKMARK_SAVE:
1055                 savePosition(strToUnsignedInt(ev.argument));
1056                 break;
1057
1058         case LFUN_BOOKMARK_GOTO:
1059                 restorePosition(strToUnsignedInt(ev.argument));
1060                 break;
1061
1062         case LFUN_REF_GOTO:
1063         {
1064                 string label = ev.argument;
1065                 if (label.empty()) {
1066                         InsetRef * inset =
1067                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1068                         if (inset) {
1069                                 label = inset->getContents();
1070                                 savePosition(0);
1071                         }
1072                 }
1073
1074                 if (!label.empty()) {
1075                         //bv_->savePosition(0);
1076                         if (!bv_->gotoLabel(label))
1077                                 Alert::alert(_("Error"),
1078                                            _("Couldn't find this label"),
1079                                            _("in current document."));
1080                 }
1081         }
1082         break;
1083
1084         // --- accented characters ---------------------------
1085
1086         case LFUN_UMLAUT:
1087         case LFUN_CIRCUMFLEX:
1088         case LFUN_GRAVE:
1089         case LFUN_ACUTE:
1090         case LFUN_TILDE:
1091         case LFUN_CEDILLA:
1092         case LFUN_MACRON:
1093         case LFUN_DOT:
1094         case LFUN_UNDERDOT:
1095         case LFUN_UNDERBAR:
1096         case LFUN_CARON:
1097         case LFUN_SPECIAL_CARON:
1098         case LFUN_BREVE:
1099         case LFUN_TIE:
1100         case LFUN_HUNG_UMLAUT:
1101         case LFUN_CIRCLE:
1102         case LFUN_OGONEK:
1103                 if (ev.argument.empty()) {
1104                         // As always...
1105                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1106                 } else {
1107                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1108                         owner_->getIntl().getTransManager()
1109                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1110                         update(bv_->getLyXText(), BufferView::SELECT);
1111                 }
1112                 break;
1113
1114         case LFUN_MATH_MACRO:
1115         case LFUN_MATH_DELIM:
1116         case LFUN_INSERT_MATRIX:
1117         case LFUN_INSERT_MATH:
1118         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1119         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1120         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1121         case LFUN_GREEK:                 // Insert a single greek letter
1122                 mathDispatch(ev);
1123                 break;
1124
1125         case LFUN_INSET_APPLY: {
1126                 string const name = ev.getArg(0);
1127
1128                 InsetBase * base = owner_->getDialogs().getOpenInset(name);
1129                 if (base) {
1130                         // This works both for 'original' and 'mathed' insets.
1131                         // Note that the localDispatch performs updateInset
1132                         // also.
1133                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1134                         base->localDispatch(fr);
1135                 } else {
1136                         Inset * inset = createInset(ev);
1137                         if (inset && insertInset(inset)) {
1138                                 updateInset(inset);
1139                         } else {
1140                                 delete inset;
1141                         }
1142                 }
1143
1144                 if (name == "bibitem") {
1145                         // We need to do a redraw because the maximum
1146                         // InsetBibitem width could have changed
1147 #warning please check you mean repaint() not update(),
1148 #warning and whether the repaint() is needed at all
1149                         bv_->repaint();
1150                         bv_->fitCursor();
1151                 }
1152         }
1153         break;
1154
1155         case LFUN_FLOAT_LIST:
1156                 if (tclass.floats().typeExist(ev.argument)) {
1157                         Inset * inset = new InsetFloatList(ev.argument);
1158                         if (!insertInset(inset, tclass.defaultLayoutName()))
1159                                 delete inset;
1160                 } else {
1161                         lyxerr << "Non-existent float type: "
1162                                << ev.argument << endl;
1163                 }
1164                 break;
1165
1166         case LFUN_LAYOUT_PARAGRAPH: {
1167                 Paragraph const * par = bv_->getLyXText()->cursor.par();
1168                 if (!par)
1169                         break;
1170
1171                 string data;
1172                 params2string(*par, data);
1173
1174                 data = "show\n" + data;
1175                 bv_->owner()->getDialogs().show("paragraph", data);
1176                 break;
1177         }
1178
1179         case LFUN_PARAGRAPH_UPDATE: {
1180                 Paragraph const * par = bv_->getLyXText()->cursor.par();
1181                 if (!par)
1182                         break;
1183
1184                 string data;
1185                 params2string(*par, data);
1186
1187                 // Will the paragraph accept changes from the dialog?
1188                 Inset * const inset = par->inInset();
1189                 bool const accept =
1190                         !(inset && inset->forceDefaultParagraphs(inset));
1191
1192                 data = "update " + tostr(accept) + '\n' + data;
1193                 bv_->owner()->getDialogs().update("paragraph", data);
1194                 break;
1195         }
1196
1197         case LFUN_PARAGRAPH_APPLY:
1198                 setParagraphParams(*bv_, ev.argument);
1199                 break;
1200
1201         case LFUN_THESAURUS_ENTRY:
1202         {
1203                 string arg = ev.argument;
1204
1205                 if (arg.empty()) {
1206                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1207                                                                    false);
1208
1209                         // FIXME
1210                         if (arg.size() > 100 || arg.empty()) {
1211                                 // Get word or selection
1212                                 bv_->getLyXText()->selectWordWhenUnderCursor(LyXText::WHOLE_WORD);
1213                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1214                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1215                         }
1216                 }
1217
1218                 bv_->owner()->getDialogs().showThesaurus(arg);
1219         }
1220                 break;
1221
1222         case LFUN_TRACK_CHANGES:
1223                 trackChanges();
1224                 break;
1225
1226         case LFUN_MERGE_CHANGES:
1227                 owner_->getDialogs().show("changes");
1228                 break;
1229
1230         case LFUN_ACCEPT_ALL_CHANGES: {
1231                 update(BufferView::SELECT);
1232                 bv_->text->setCursor(&(*bv_->buffer()->paragraphs.begin()), 0);
1233 #warning FIXME changes
1234                 //moveCursorUpdate(false);
1235
1236                 while (lyxfind::findNextChange(bv_)) {
1237                         bv_->getLyXText()->acceptChange();
1238                 }
1239                 update(BufferView::SELECT);
1240                 break;
1241         }
1242
1243         case LFUN_REJECT_ALL_CHANGES: {
1244                 update(BufferView::SELECT);
1245                 bv_->text->setCursor(&(*bv_->buffer()->paragraphs.begin()), 0);
1246 #warning FIXME changes
1247                 //moveCursorUpdate(false);
1248
1249                 while (lyxfind::findNextChange(bv_)) {
1250                         bv_->getLyXText()->rejectChange();
1251                 }
1252                 update(BufferView::SELECT);
1253                 break;
1254         }
1255
1256         case LFUN_ACCEPT_CHANGE: {
1257                 bv_->getLyXText()->acceptChange();
1258                 update(BufferView::SELECT);
1259                 break;
1260         }
1261
1262         case LFUN_REJECT_CHANGE: {
1263                 bv_->getLyXText()->rejectChange();
1264                 update(BufferView::SELECT);
1265                 break;
1266         }
1267
1268         case LFUN_UNKNOWN_ACTION:
1269                 ev.errorMessage(N_("Unknown function!"));
1270                 break;
1271
1272         default:
1273                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1274         } // end of switch
1275
1276         return true;
1277 }
1278
1279
1280 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1281 {
1282         // if we are in a locking inset we should try to insert the
1283         // inset there otherwise this is a illegal function now
1284         if (bv_->theLockingInset()) {
1285                 if (bv_->theLockingInset()->insetAllowed(inset))
1286                         return bv_->theLockingInset()->insertInset(bv_, inset);
1287                 return false;
1288         }
1289
1290         // not quite sure if we want this...
1291         setCursorParUndo(bv_);
1292         freezeUndo();
1293
1294         beforeChange(bv_->text);
1295         if (!lout.empty()) {
1296                 update(BufferView::SELECT);
1297                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1298                 update(BufferView::SELECT);
1299
1300                 if (!bv_->text->cursor.par()->empty()) {
1301                         bv_->text->cursorLeft(bv_);
1302
1303                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1304                         update(BufferView::SELECT);
1305                 }
1306
1307                 string lres = lout;
1308                 LyXTextClass const & tclass =
1309                         buffer_->params.getLyXTextClass();
1310                 bool hasLayout = tclass.hasLayout(lres);
1311                 string lay = tclass.defaultLayoutName();
1312
1313                 if (hasLayout != false) {
1314                         // layout found
1315                         lay = lres;
1316                 } else {
1317                         // layout not fount using default
1318                         lay = tclass.defaultLayoutName();
1319                 }
1320
1321                 bv_->text->setLayout(lay);
1322
1323                 bv_->text->setParagraph(0, 0,
1324                                    0, 0,
1325                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1326                                    Spacing(),
1327                                    LYX_ALIGN_LAYOUT,
1328                                    string(),
1329                                    0);
1330                 update(BufferView::SELECT);
1331         }
1332
1333         bv_->text->insertInset(inset);
1334         update(BufferView::SELECT);
1335
1336         unFreezeUndo();
1337         return true;
1338 }
1339
1340
1341 void BufferView::Pimpl::updateInset(Inset * inset)
1342 {
1343         if (!inset || !available())
1344                 return;
1345
1346         // first check for locking insets
1347         if (bv_->theLockingInset()) {
1348                 if (bv_->theLockingInset() == inset) {
1349                         if (bv_->text->updateInset(inset)) {
1350                                 update();
1351                                 updateScrollbar();
1352                                 return;
1353                         }
1354                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1355                         if (bv_->text->updateInset(bv_->theLockingInset())) {
1356                                 update();
1357                                 updateScrollbar();
1358                                 return;
1359                         }
1360                 }
1361         }
1362
1363         // then check if the inset is a top_level inset (has no owner)
1364         // if yes do the update as always otherwise we have to update the
1365         // toplevel inset where this inset is inside
1366         Inset * tl_inset = inset;
1367         while (tl_inset->owner())
1368                 tl_inset = tl_inset->owner();
1369         hideCursor();
1370         if (tl_inset == inset) {
1371                 update(BufferView::UPDATE);
1372                 if (bv_->text->updateInset(inset)) {
1373                         update(BufferView::SELECT);
1374                         return;
1375                 }
1376         } else if (static_cast<UpdatableInset *>(tl_inset)
1377                            ->updateInsetInInset(bv_, inset))
1378         {
1379                 if (bv_->text->updateInset(tl_inset)) {
1380                         update();
1381                         updateScrollbar();
1382                 }
1383         }
1384 }