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 "lfuns.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::workAreaDispatch, 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                 bv_->text->clearPaint();
 507         }
 508 }
 509
 510
 511 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 512 {
 513         if (!text->selection.set() && (f & SELECT)) {
 514                 text->selection.cursor = text->cursor;
 515         }
 516
 517         text->fullRebreak();
 518
 519         if (text->inset_owner) {
 520                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 521                 updateInset(text->inset_owner);
 522         } else {
 523                 update();
 524         }
 525 }
 526
 527
 528 void BufferView::Pimpl::update(BufferView::UpdateCodes f)
 529 {
 530         LyXText * text = bv_->text;
 531
 532         if (!text->selection.set() && (f & SELECT)) {
 533                 text->selection.cursor = text->cursor;
 534         }
 535
 536         text->fullRebreak();
 537
 538         if (text->inset_owner) {
 539                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 540                 updateInset(text->inset_owner);
 541         } else {
 542                 update();
 543         }
 544 }
 545
 546
 547 // Callback for cursor timer
 548 void BufferView::Pimpl::cursorToggle()
 549 {
 550         if (!buffer_) {
 551                 cursor_timeout.restart();
 552                 return;
 553         }
 554
 555         if (!bv_->theLockingInset()) {
 556                 screen().cursorToggle(bv_);
 557         } else {
 558                 bv_->theLockingInset()->toggleInsetCursor(bv_);
 559         }
 560
 561         cursor_timeout.restart();
 562 }
 563
 564
 565 bool BufferView::Pimpl::available() const
 566 {
 567         if (buffer_ && bv_->text)
 568                 return true;
 569         return false;
 570 }
 571
 572
 573 Change const BufferView::Pimpl::getCurrentChange()
 574 {
 575         if (!bv_->buffer()->params.tracking_changes)
 576                 return Change(Change::UNCHANGED);
 577
 578         LyXText * t(bv_->getLyXText());
 579
 580         if (!t->selection.set())
 581                 return Change(Change::UNCHANGED);
 582
 583         LyXCursor const & cur(t->selection.start);
 584         return cur.par()->lookupChangeFull(cur.pos());
 585 }
 586
 587
 588 void BufferView::Pimpl::beforeChange(LyXText * text)
 589 {
 590         toggleSelection();
 591         text->clearSelection();
 592 }
 593
 594
 595 void BufferView::Pimpl::savePosition(unsigned int i)
 596 {
 597         if (i >= saved_positions_num)
 598                 return;
 599         saved_positions[i] = Position(buffer_->fileName(),
 600                                       bv_->text->cursor.par()->id(),
 601                                       bv_->text->cursor.pos());
 602         if (i > 0) {
 603                 ostringstream str;
 604 #if USE_BOOST_FORMAT
 605                 str << boost::format(_("Saved bookmark %1$d")) % i;
 606 #else
 607                 str << _("Saved bookmark ") << i;
 608 #endif
 609                 owner_->message(STRCONV(str.str()));
 610         }
 611 }
 612
 613
 614 void BufferView::Pimpl::restorePosition(unsigned int i)
 615 {
 616         if (i >= saved_positions_num)
 617                 return;
 618
 619         string const fname = saved_positions[i].filename;
 620
 621         beforeChange(bv_->text);
 622
 623         if (fname != buffer_->fileName()) {
 624                 Buffer * b = bufferlist.exists(fname) ?
 625                         bufferlist.getBuffer(fname) :
 626                         bufferlist.loadLyXFile(fname); // don't ask, just load it
 627                 if (b != 0) buffer(b);
 628         }
 629
 630         Paragraph * par = buffer_->getParFromID(saved_positions[i].par_id);
 631         if (!par)
 632                 return;
 633
 634         bv_->text->setCursor(par,
 635                              min(par->size(), saved_positions[i].par_pos));
 636
 637         update(BufferView::SELECT);
 638         if (i > 0) {
 639                 ostringstream str;
 640 #if USE_BOOST_FORMAT
 641                 str << boost::format(_("Moved to bookmark %1$d")) % i;
 642 #else
 643                 str << _("Moved to bookmark ") << i;
 644 #endif
 645                 owner_->message(STRCONV(str.str()));
 646         }
 647 }
 648
 649
 650 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 651 {
 652         if (i >= saved_positions_num)
 653                 return false;
 654
 655         return !saved_positions[i].filename.empty();
 656 }
 657
 658
 659 void BufferView::Pimpl::switchKeyMap()
 660 {
 661         if (!lyxrc.rtl_support)
 662                 return;
 663
 664         LyXText * text = bv_->getLyXText();
 665         if (text->real_current_font.isRightToLeft()
 666             && !(bv_->theLockingInset()
 667                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 668         {
 669                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 670                         owner_->getIntl().KeyMapSec();
 671         } else {
 672                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 673                         owner_->getIntl().KeyMapPrim();
 674         }
 675 }
 676
 677
 678 void BufferView::Pimpl::insetUnlock()
 679 {
 680         if (bv_->theLockingInset()) {
 681                 bv_->theLockingInset()->insetUnlock(bv_);
 682                 bv_->theLockingInset(0);
 683                 finishUndo();
 684         }
 685 }
 686
 687
 688 void BufferView::Pimpl::showCursor()
 689 {
 690         if (bv_->theLockingInset())
 691                 bv_->theLockingInset()->showInsetCursor(bv_);
 692         else
 693                 screen().showCursor(bv_->text, bv_);
 694 }
 695
 696
 697 void BufferView::Pimpl::hideCursor()
 698 {
 699         if (!bv_->theLockingInset())
 700                 screen().hideCursor();
 701 }
 702
 703
 704 void BufferView::Pimpl::toggleSelection(bool b)
 705 {
 706         if (bv_->theLockingInset())
 707                 bv_->theLockingInset()->toggleSelection(bv_, b);
 708         screen().toggleSelection(bv_->text, bv_, b);
 709 }
 710
 711
 712 void BufferView::Pimpl::toggleToggle()
 713 {
 714         screen().toggleToggle(bv_->text, bv_);
 715 }
 716
 717
 718 void BufferView::Pimpl::center()
 719 {
 720         LyXText * t = bv_->text;
 721
 722         beforeChange(t);
 723         int const half_height = workarea().workHeight() / 2;
 724         int new_y = 0;
 725
 726         if (t->cursor.y() > half_height) {
 727                 new_y = t->cursor.y() - half_height;
 728         }
 729
 730         // FIXME: look at this comment again ...
 731
 732         // FIXME: can we do this w/o calling screen directly ?
 733         // This updates top_y() but means the fitCursor() call
 734         // from the update(FITCUR) doesn't realise that we might
 735         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 736         // the scrollbar to be updated as it should, so we have
 737         // to do it manually. Any operation that does a center()
 738         // and also might have moved top_y() must make sure to call
 739         // updateScrollbar() currently. Never mind that this is a
 740         // pretty obfuscated way of updating t->top_y()
 741         screen().draw(t, bv_, new_y);
 742
 743         update(BufferView::SELECT);
 744 }
 745
 746
 747 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 748 {
 749         workarea().putClipboard(stuff);
 750 }
 751
 752
 753 /*
 754  * Dispatch functions for actions which can be valid for BufferView->text
 755  * and/or InsetText->text!!!
 756  */
 757
 758
 759 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 760 {
 761 #if 0
 762         LyXCursor cursor = bv_->getLyXText()->cursor;
 763         Buffer::inset_iterator it =
 764                 find_if(Buffer::inset_iterator(
 765                         cursor.par(), cursor.pos()),
 766                         buffer_->inset_iterator_end(),
 767                         lyx::compare_memfun(&Inset::lyxCode, code));
 768         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 769 #else
 770         // Ok, this is a little bit too brute force but it
 771         // should work for now. Better infrastructure is comming. (Lgb)
 772
 773         Buffer * b = bv_->buffer();
 774         LyXCursor cursor = bv_->getLyXText()->cursor;
 775
 776         Buffer::inset_iterator beg = b->inset_iterator_begin();
 777         Buffer::inset_iterator end = b->inset_iterator_end();
 778
 779         bool cursor_par_seen = false;
 780
 781         for (; beg != end; ++beg) {
 782                 if (beg.getPar() == cursor.par()) {
 783                         cursor_par_seen = true;
 784                 }
 785                 if (cursor_par_seen) {
 786                         if (beg.getPar() == cursor.par()
 787                             && beg.getPos() >= cursor.pos()) {
 788                                 break;
 789                         } else if (beg.getPar() != cursor.par()) {
 790                                 break;
 791                         }
 792                 }
 793
 794         }
 795         if (beg != end) {
 796                 // Now find the first inset that matches code.
 797                 for (; beg != end; ++beg) {
 798                         if (beg->lyxCode() == code) {
 799                                 return &(*beg);
 800                         }
 801                 }
 802         }
 803         return 0;
 804 #endif
 805 }
 806
 807
 808 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 809 {
 810         string filename = filen;
 811
 812         if (filename.empty()) {
 813                 // Launch a file browser
 814                 string initpath = lyxrc.document_path;
 815
 816                 if (available()) {
 817                         string const trypath = owner_->buffer()->filePath();
 818                         // If directory is writeable, use this as default.
 819                         if (IsDirWriteable(trypath))
 820                                 initpath = trypath;
 821                 }
 822
 823                 FileDialog fileDlg(_("Select LyX document to insert"),
 824                         LFUN_FILE_INSERT,
 825                         make_pair(string(_("Documents|#o#O")),
 826                                   string(lyxrc.document_path)),
 827                         make_pair(string(_("Examples|#E#e")),
 828                                   string(AddPath(system_lyxdir, "examples"))));
 829
 830                 FileDialog::Result result =
 831                         fileDlg.open(initpath,
 832                                        _("*.lyx| LyX Documents (*.lyx)"));
 833
 834                 if (result.first == FileDialog::Later)
 835                         return;
 836
 837                 filename = result.second;
 838
 839                 // check selected filename
 840                 if (filename.empty()) {
 841                         owner_->message(_("Canceled."));
 842                         return;
 843                 }
 844         }
 845
 846         // get absolute path of file and add ".lyx" to the filename if
 847         // necessary
 848         filename = FileSearch(string(), filename, "lyx");
 849
 850         string const disp_fn(MakeDisplayPath(filename));
 851
 852         ostringstream s1;
 853 #if USE_BOOST_FORMAT
 854         s1 << boost::format(_("Inserting document %1$s...")) % disp_fn;
 855 #else
 856         s1 << _("Inserting document ") << disp_fn << _("...");
 857 #endif
 858         owner_->message(STRCONV(s1.str()));
 859         bool const res = bv_->insertLyXFile(filename);
 860         if (res) {
 861                 ostringstream str;
 862 #if USE_BOOST_FORMAT
 863                 str << boost::format(_("Document %1$s inserted.")) % disp_fn;
 864 #else
 865                 str << _("Document ") << disp_fn << _(" inserted.");
 866 #endif
 867                 owner_->message(STRCONV(str.str()));
 868         } else {
 869                 ostringstream str;
 870 #if USE_BOOST_FORMAT
 871                 str << boost::format(_("Could not insert document %1$s")) % disp_fn;
 872 #else
 873                 str << _("Could not insert document ") << disp_fn;
 874 #endif
 875                 owner_->message(STRCONV(str.str()));
 876         }
 877 }
 878
 879
 880 void BufferView::Pimpl::trackChanges()
 881 {
 882         Buffer * buf(bv_->buffer());
 883         bool const tracking(buf->params.tracking_changes);
 884
 885         if (!tracking) {
 886                 ParIterator const end = buf->par_iterator_end();
 887                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it) {
 888                         (*it)->trackChanges();
 889                 }
 890                 buf->params.tracking_changes = true;
 891
 892                 // we cannot allow undos beyond the freeze point
 893                 buf->undostack.clear();
 894         } else {
 895                 update(BufferView::SELECT);
 896                 bv_->text->setCursor(&(*buf->paragraphs.begin()), 0);
 897 #warning changes FIXME
 898                 //moveCursorUpdate(false);
 899
 900                 bool found = lyxfind::findNextChange(bv_);
 901                 if (found) {
 902                         owner_->getDialogs().show("changes");
 903                         return;
 904                 }
 905
 906                 ParIterator const end = buf->par_iterator_end();
 907                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it) {
 908                         (*it)->untrackChanges();
 909                 }
 910                 buf->params.tracking_changes = false;
 911         }
 912
 913         buf->redostack.clear();
 914 }
 915
 916
 917 // Doesn't go through lyxfunc, so we need to update the
 918 // layout choice etc. ourselves
 919 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev_in)
 920 {
 921         // e.g. Qt mouse press when no buffer
 922         if (!available())
 923                 return false;
 924
 925         bool const res = dispatch(ev_in);
 926
 927         bv_->owner()->updateLayoutChoice();
 928         bv_->fitCursor();
 929
 930         return res;
 931 }
 932
 933
 934 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
 935 {
 936         // Make sure that the cached BufferView is correct.
 937         FuncRequest ev = ev_in;
 938         ev.setView(bv_);
 939
 940         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 941                 << " action[" << ev.action << ']'
 942                 << " arg[" << ev.argument << ']'
 943                 << " x[" << ev.x << ']'
 944                 << " y[" << ev.y << ']'
 945                 << " button[" << ev.button() << ']'
 946                 << endl;
 947
 948         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
 949
 950         switch (ev.action) {
 951
 952         case LFUN_SCROLL_INSET:
 953                 // this is not handled here as this function is only active
 954                 // if we have a locking_inset and that one is (or contains)
 955                 // a tabular-inset
 956                 break;
 957
 958         case LFUN_LAYOUT_COPY:
 959                 bv_->copyEnvironment();
 960                 break;
 961
 962         case LFUN_LAYOUT_PASTE:
 963                 bv_->pasteEnvironment();
 964                 switchKeyMap();
 965                 break;
 966
 967         case LFUN_FILE_INSERT:
 968                 MenuInsertLyXFile(ev.argument);
 969                 break;
 970
 971         case LFUN_FILE_INSERT_ASCII_PARA:
 972                 InsertAsciiFile(bv_, ev.argument, true);
 973                 break;
 974
 975         case LFUN_FILE_INSERT_ASCII:
 976                 InsertAsciiFile(bv_, ev.argument, false);
 977                 break;
 978
 979         case LFUN_LANGUAGE:
 980                 lang(bv_, ev.argument);
 981                 switchKeyMap();
 982                 owner_->view_state_changed();
 983                 break;
 984
 985         case LFUN_EMPH:
 986                 emph(bv_);
 987                 owner_->view_state_changed();
 988                 break;
 989
 990         case LFUN_BOLD:
 991                 bold(bv_);
 992                 owner_->view_state_changed();
 993                 break;
 994
 995         case LFUN_NOUN:
 996                 noun(bv_);
 997                 owner_->view_state_changed();
 998                 break;
 999
1000         case LFUN_CODE:
1001                 code(bv_);
1002                 owner_->view_state_changed();
1003                 break;
1004
1005         case LFUN_SANS:
1006                 sans(bv_);
1007                 owner_->view_state_changed();
1008                 break;
1009
1010         case LFUN_ROMAN:
1011                 roman(bv_);
1012                 owner_->view_state_changed();
1013                 break;
1014
1015         case LFUN_DEFAULT:
1016                 styleReset(bv_);
1017                 owner_->view_state_changed();
1018                 break;
1019
1020         case LFUN_UNDERLINE:
1021                 underline(bv_);
1022                 owner_->view_state_changed();
1023                 break;
1024
1025         case LFUN_FONT_SIZE:
1026                 fontSize(bv_, ev.argument);
1027                 owner_->view_state_changed();
1028                 break;
1029
1030         case LFUN_FONT_STATE:
1031                 owner_->getLyXFunc().setMessage(currentState(bv_));
1032                 break;
1033
1034         case LFUN_INSERT_LABEL: {
1035                 // Try and generate a valid label
1036                 string const contents = ev.argument.empty() ?
1037                         getPossibleLabel(*bv_) : ev.argument;
1038                 InsetCommandParams icp("label", contents);
1039                 string data = InsetCommandMailer::params2string("label", icp);
1040                 owner_->getDialogs().show("label", data, 0);
1041         }
1042         break;
1043
1044         case LFUN_BOOKMARK_SAVE:
1045                 savePosition(strToUnsignedInt(ev.argument));
1046                 break;
1047
1048         case LFUN_BOOKMARK_GOTO:
1049                 restorePosition(strToUnsignedInt(ev.argument));
1050                 break;
1051
1052         case LFUN_REF_GOTO:
1053         {
1054                 string label = ev.argument;
1055                 if (label.empty()) {
1056                         InsetRef * inset =
1057                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1058                         if (inset) {
1059                                 label = inset->getContents();
1060                                 savePosition(0);
1061                         }
1062                 }
1063
1064                 if (!label.empty()) {
1065                         //bv_->savePosition(0);
1066                         if (!bv_->gotoLabel(label))
1067                                 Alert::alert(_("Error"),
1068                                            _("Couldn't find this label"),
1069                                            _("in current document."));
1070                 }
1071         }
1072         break;
1073
1074         // --- accented characters ---------------------------
1075
1076         case LFUN_UMLAUT:
1077         case LFUN_CIRCUMFLEX:
1078         case LFUN_GRAVE:
1079         case LFUN_ACUTE:
1080         case LFUN_TILDE:
1081         case LFUN_CEDILLA:
1082         case LFUN_MACRON:
1083         case LFUN_DOT:
1084         case LFUN_UNDERDOT:
1085         case LFUN_UNDERBAR:
1086         case LFUN_CARON:
1087         case LFUN_SPECIAL_CARON:
1088         case LFUN_BREVE:
1089         case LFUN_TIE:
1090         case LFUN_HUNG_UMLAUT:
1091         case LFUN_CIRCLE:
1092         case LFUN_OGONEK:
1093                 if (ev.argument.empty()) {
1094                         // As always...
1095                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1096                 } else {
1097                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1098                         owner_->getIntl().getTransManager()
1099                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1100                         update(bv_->getLyXText(), BufferView::SELECT);
1101                 }
1102                 break;
1103
1104         case LFUN_MATH_MACRO:
1105         case LFUN_MATH_DELIM:
1106         case LFUN_INSERT_MATRIX:
1107         case LFUN_INSERT_MATH:
1108         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1109         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1110         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1111         case LFUN_GREEK:                 // Insert a single greek letter
1112                 mathDispatch(ev);
1113                 break;
1114
1115         case LFUN_INSET_APPLY: {
1116                 string const name = ev.getArg(0);
1117
1118                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1119                 if (inset) {
1120                         // This works both for 'original' and 'mathed' insets.
1121                         // Note that the localDispatch performs updateInset
1122                         // also.
1123                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1124                         inset->localDispatch(fr);
1125                 } else {
1126                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1127                         dispatch(fr);
1128                 }
1129         }
1130         break;
1131
1132         case LFUN_INSET_INSERT: {
1133                 Inset * inset = createInset(ev);
1134                 if (inset && insertInset(inset)) {
1135                         updateInset(inset);
1136
1137                         string const name = ev.getArg(0);
1138                         if (name == "bibitem") {
1139                                 // We need to do a redraw because the maximum
1140                                 // InsetBibitem width could have changed
1141 #warning please check you mean repaint() not update(),
1142 #warning and whether the repaint() is needed at all
1143                                 bv_->repaint();
1144                                 bv_->fitCursor();
1145                         }
1146                 } else {
1147                         delete inset;
1148                 }
1149         }
1150         break;
1151
1152         case LFUN_FLOAT_LIST:
1153                 if (tclass.floats().typeExist(ev.argument)) {
1154                         Inset * inset = new InsetFloatList(ev.argument);
1155                         if (!insertInset(inset, tclass.defaultLayoutName()))
1156                                 delete inset;
1157                 } else {
1158                         lyxerr << "Non-existent float type: "
1159                                << ev.argument << endl;
1160                 }
1161                 break;
1162
1163         case LFUN_LAYOUT_PARAGRAPH: {
1164                 Paragraph const * par = bv_->getLyXText()->cursor.par();
1165                 if (!par)
1166                         break;
1167
1168                 string data;
1169                 params2string(*par, data);
1170
1171                 data = "show\n" + data;
1172                 bv_->owner()->getDialogs().show("paragraph", data);
1173                 break;
1174         }
1175
1176         case LFUN_PARAGRAPH_UPDATE: {
1177                 Paragraph const * par = bv_->getLyXText()->cursor.par();
1178                 if (!par)
1179                         break;
1180
1181                 string data;
1182                 params2string(*par, data);
1183
1184                 // Will the paragraph accept changes from the dialog?
1185                 Inset * const inset = par->inInset();
1186                 bool const accept =
1187                         !(inset && inset->forceDefaultParagraphs(inset));
1188
1189                 data = "update " + tostr(accept) + '\n' + data;
1190                 bv_->owner()->getDialogs().update("paragraph", data);
1191                 break;
1192         }
1193
1194         case LFUN_PARAGRAPH_APPLY:
1195                 setParagraphParams(*bv_, ev.argument);
1196                 break;
1197
1198         case LFUN_THESAURUS_ENTRY:
1199         {
1200                 string arg = ev.argument;
1201
1202                 if (arg.empty()) {
1203                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1204                                                                    false);
1205
1206                         // FIXME
1207                         if (arg.size() > 100 || arg.empty()) {
1208                                 // Get word or selection
1209                                 bv_->getLyXText()->selectWordWhenUnderCursor(LyXText::WHOLE_WORD);
1210                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1211                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1212                         }
1213                 }
1214
1215                 bv_->owner()->getDialogs().show("thesaurus", arg);
1216         }
1217                 break;
1218
1219         case LFUN_TRACK_CHANGES:
1220                 trackChanges();
1221                 break;
1222
1223         case LFUN_MERGE_CHANGES:
1224                 owner_->getDialogs().show("changes");
1225                 break;
1226
1227         case LFUN_ACCEPT_ALL_CHANGES: {
1228                 update(BufferView::SELECT);
1229                 bv_->text->setCursor(&(*bv_->buffer()->paragraphs.begin()), 0);
1230 #warning FIXME changes
1231                 //moveCursorUpdate(false);
1232
1233                 while (lyxfind::findNextChange(bv_)) {
1234                         bv_->getLyXText()->acceptChange();
1235                 }
1236                 update(BufferView::SELECT);
1237                 break;
1238         }
1239
1240         case LFUN_REJECT_ALL_CHANGES: {
1241                 update(BufferView::SELECT);
1242                 bv_->text->setCursor(&(*bv_->buffer()->paragraphs.begin()), 0);
1243 #warning FIXME changes
1244                 //moveCursorUpdate(false);
1245
1246                 while (lyxfind::findNextChange(bv_)) {
1247                         bv_->getLyXText()->rejectChange();
1248                 }
1249                 update(BufferView::SELECT);
1250                 break;
1251         }
1252
1253         case LFUN_ACCEPT_CHANGE: {
1254                 bv_->getLyXText()->acceptChange();
1255                 update(BufferView::SELECT);
1256                 break;
1257         }
1258
1259         case LFUN_REJECT_CHANGE: {
1260                 bv_->getLyXText()->rejectChange();
1261                 update(BufferView::SELECT);
1262                 break;
1263         }
1264
1265         case LFUN_UNKNOWN_ACTION:
1266                 ev.errorMessage(N_("Unknown function!"));
1267                 break;
1268
1269         default:
1270                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1271         } // end of switch
1272
1273         return true;
1274 }
1275
1276
1277 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1278 {
1279         // if we are in a locking inset we should try to insert the
1280         // inset there otherwise this is a illegal function now
1281         if (bv_->theLockingInset()) {
1282                 if (bv_->theLockingInset()->insetAllowed(inset))
1283                         return bv_->theLockingInset()->insertInset(bv_, inset);
1284                 return false;
1285         }
1286
1287         // not quite sure if we want this...
1288         setCursorParUndo(bv_);
1289         freezeUndo();
1290
1291         beforeChange(bv_->text);
1292         if (!lout.empty()) {
1293                 update(BufferView::SELECT);
1294                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1295                 update(BufferView::SELECT);
1296
1297                 if (!bv_->text->cursor.par()->empty()) {
1298                         bv_->text->cursorLeft(bv_);
1299
1300                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1301                         update(BufferView::SELECT);
1302                 }
1303
1304                 string lres = lout;
1305                 LyXTextClass const & tclass =
1306                         buffer_->params.getLyXTextClass();
1307                 bool hasLayout = tclass.hasLayout(lres);
1308                 string lay = tclass.defaultLayoutName();
1309
1310                 if (hasLayout != false) {
1311                         // layout found
1312                         lay = lres;
1313                 } else {
1314                         // layout not fount using default
1315                         lay = tclass.defaultLayoutName();
1316                 }
1317
1318                 bv_->text->setLayout(lay);
1319
1320                 bv_->text->setParagraph(0, 0,
1321                                    0, 0,
1322                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1323                                    Spacing(),
1324                                    LYX_ALIGN_LAYOUT,
1325                                    string(),
1326                                    0);
1327                 update(BufferView::SELECT);
1328         }
1329
1330         bv_->text->insertInset(inset);
1331         update(BufferView::SELECT);
1332
1333         unFreezeUndo();
1334         return true;
1335 }
1336
1337
1338 void BufferView::Pimpl::updateInset(Inset * inset)
1339 {
1340         if (!inset || !available())
1341                 return;
1342
1343         // first check for locking insets
1344         if (bv_->theLockingInset()) {
1345                 if (bv_->theLockingInset() == inset) {
1346                         if (bv_->text->updateInset(inset)) {
1347                                 update();
1348                                 updateScrollbar();
1349                                 return;
1350                         }
1351                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1352                         if (bv_->text->updateInset(bv_->theLockingInset())) {
1353                                 update();
1354                                 updateScrollbar();
1355                                 return;
1356                         }
1357                 }
1358         }
1359
1360         // then check if the inset is a top_level inset (has no owner)
1361         // if yes do the update as always otherwise we have to update the
1362         // toplevel inset where this inset is inside
1363         Inset * tl_inset = inset;
1364         while (tl_inset->owner())
1365                 tl_inset = tl_inset->owner();
1366         hideCursor();
1367         if (tl_inset == inset) {
1368                 update(BufferView::UPDATE);
1369                 if (bv_->text->updateInset(inset)) {
1370                         update(BufferView::SELECT);
1371                         return;
1372                 }
1373         } else if (static_cast<UpdatableInset *>(tl_inset)
1374                            ->updateInsetInInset(bv_, inset))
1375         {
1376                 if (bv_->text->updateInset(tl_inset)) {
1377                         update();
1378                         updateScrollbar();
1379                 }
1380         }
1381 }