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 "support/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                 // 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 (buffer_) {
 213                 // Don't forget to update the Layout
 214                 string const layoutname =
 215                         bv_->text->cursor.par()->layout()->name();
 216                 owner_->setLayout(layoutname);
 217         }
 218
 219         if (grfx::Previews::activated() && buffer_)
 220                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 221 }
 222
 223
 224 bool BufferView::Pimpl::fitCursor()
 225 {
 226         bool ret;
 227
 228         if (bv_->theLockingInset()) {
 229                 bv_->theLockingInset()->fitInsetCursor(bv_);
 230                 ret = true;
 231         } else {
 232                 ret = screen().fitCursor(bv_->text, bv_);
 233         }
 234
 235         dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 236
 237         // We need to always update, in case we did a
 238         // paste and we stayed anchored to a row, but
 239         // the actual height of the doc changed ...
 240         updateScrollbar();
 241         return ret;
 242 }
 243
 244
 245 void BufferView::Pimpl::redoCurrentBuffer()
 246 {
 247         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 248         if (buffer_ && bv_->text) {
 249                 resizeCurrentBuffer();
 250                 updateScrollbar();
 251                 owner_->updateLayoutChoice();
 252                 repaint();
 253         }
 254 }
 255
 256
 257 int BufferView::Pimpl::resizeCurrentBuffer()
 258 {
 259         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 260
 261         Paragraph * par = 0;
 262         Paragraph * selstartpar = 0;
 263         Paragraph * selendpar = 0;
 264         UpdatableInset * the_locking_inset = 0;
 265
 266         pos_type pos = 0;
 267         pos_type selstartpos = 0;
 268         pos_type selendpos = 0;
 269         bool selection = false;
 270         bool mark_set  = false;
 271
 272         owner_->busy(true);
 273
 274         owner_->message(_("Formatting document..."));
 275
 276         if (bv_->text) {
 277                 par = bv_->text->cursor.par();
 278                 pos = bv_->text->cursor.pos();
 279                 selstartpar = bv_->text->selection.start.par();
 280                 selstartpos = bv_->text->selection.start.pos();
 281                 selendpar = bv_->text->selection.end.par();
 282                 selendpos = bv_->text->selection.end.pos();
 283                 selection = bv_->text->selection.set();
 284                 mark_set = bv_->text->selection.mark();
 285                 the_locking_inset = bv_->theLockingInset();
 286                 buffer_->resizeInsets(bv_);
 287                 // I don't think the delete and new are necessary here we just could
 288                 // call only init! (Jug 20020419)
 289                 delete bv_->text;
 290                 bv_->text = new LyXText(bv_);
 291                 bv_->text->init(bv_);
 292         } else {
 293                 // See if we have a text in TextCache that fits
 294                 // the new buffer_ with the correct width.
 295                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 296                 if (bv_->text) {
 297                         if (lyxerr.debugging()) {
 298                                 lyxerr << "Found a LyXText that fits:\n";
 299                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 300                         }
 301                         // Set the owner of the newly found text
 302                         //      bv_->text->owner(bv_);
 303                         if (lyxerr.debugging())
 304                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 305
 306                         buffer_->resizeInsets(bv_);
 307                 } else {
 308                         bv_->text = new LyXText(bv_);
 309                         bv_->text->init(bv_);
 310                         //buffer_->resizeInsets(bv_);
 311                 }
 312         }
 313
 314         if (par) {
 315                 bv_->text->selection.set(true);
 316                 // At this point just to avoid the Delete-Empty-Paragraph-
 317                 // Mechanism when setting the cursor.
 318                 bv_->text->selection.mark(mark_set);
 319                 if (selection) {
 320                         bv_->text->setCursor(selstartpar, selstartpos);
 321                         bv_->text->selection.cursor = bv_->text->cursor;
 322                         bv_->text->setCursor(selendpar, selendpos);
 323                         bv_->text->setSelection();
 324                         bv_->text->setCursor(par, pos);
 325                 } else {
 326                         bv_->text->setCursor(par, pos);
 327                         bv_->text->selection.cursor = bv_->text->cursor;
 328                         bv_->text->selection.set(false);
 329                 }
 330                 // remake the inset locking
 331                 bv_->theLockingInset(the_locking_inset);
 332         }
 333
 334         bv_->text->top_y(screen().topCursorVisible(bv_->text->cursor, bv_->text->top_y()));
 335
 336         switchKeyMap();
 337         owner_->busy(false);
 338
 339         updateScrollbar();
 340
 341         return 0;
 342 }
 343
 344
 345 void BufferView::Pimpl::repaint()
 346 {
 347         // Regenerate the screen.
 348         screen().redraw(bv_->text, bv_);
 349 }
 350
 351
 352 void BufferView::Pimpl::updateScrollbar()
 353 {
 354         if (!bv_->text) {
 355                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 356                 workarea().setScrollbarParams(0, 0, 0);
 357                 return;
 358         }
 359
 360         LyXText const & t = *bv_->text;
 361
 362         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 363                 << t.top_y() << ", default height " << defaultRowHeight() << endl;
 364
 365         workarea().setScrollbarParams(t.height, t.top_y(), defaultRowHeight());
 366 }
 367
 368
 369 void BufferView::Pimpl::scrollDocView(int value)
 370 {
 371         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 372
 373         if (!buffer_)
 374                 return;
 375
 376         screen().draw(bv_->text, bv_, value);
 377
 378         if (!lyxrc.cursor_follows_scrollbar)
 379                 return;
 380
 381         LyXText * vbt = bv_->text;
 382
 383         int const height = defaultRowHeight();
 384         int const first = static_cast<int>((bv_->text->top_y() + height));
 385         int const last = static_cast<int>((bv_->text->top_y() + workarea().workHeight() - height));
 386
 387         if (vbt->cursor.y() < first)
 388                 vbt->setCursorFromCoordinates(0, first);
 389         else if (vbt->cursor.y() > last)
 390                 vbt->setCursorFromCoordinates(0, last);
 391
 392         owner_->updateLayoutChoice();
 393 }
 394
 395
 396 void BufferView::Pimpl::scroll(int lines)
 397 {
 398         if (!buffer_) {
 399                 return;
 400         }
 401
 402         LyXText const * t = bv_->text;
 403         int const line_height = defaultRowHeight();
 404
 405         // The new absolute coordinate
 406         int new_top_y = t->top_y() + lines * line_height;
 407
 408         // Restrict to a valid value
 409         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 410         new_top_y = std::max(0, new_top_y);
 411
 412         scrollDocView(new_top_y);
 413
 414         // Update the scrollbar.
 415         workarea().setScrollbarParams(t->height, t->top_y(), defaultRowHeight());
 416 }
 417
 418
 419 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 420                                          key_modifier::state state)
 421 {
 422         bv_->owner()->getLyXFunc().processKeySym(key, state);
 423 }
 424
 425
 426 void BufferView::Pimpl::selectionRequested()
 427 {
 428         static string sel;
 429
 430         if (!available())
 431                 return;
 432
 433         LyXText * text = bv_->getLyXText();
 434
 435         if (text->selection.set() &&
 436                 (!bv_->text->xsel_cache.set() ||
 437                  text->selection.start != bv_->text->xsel_cache.start ||
 438                  text->selection.end != bv_->text->xsel_cache.end))
 439         {
 440                 bv_->text->xsel_cache = text->selection;
 441                 sel = text->selectionAsString(bv_->buffer(), false);
 442         } else if (!text->selection.set()) {
 443                 sel = string();
 444                 bv_->text->xsel_cache.set(false);
 445         }
 446         if (!sel.empty()) {
 447                 workarea().putClipboard(sel);
 448         }
 449 }
 450
 451
 452 void BufferView::Pimpl::selectionLost()
 453 {
 454         if (available()) {
 455                 hideCursor();
 456                 toggleSelection();
 457                 bv_->getLyXText()->clearSelection();
 458                 showCursor();
 459                 bv_->text->xsel_cache.set(false);
 460         }
 461 }
 462
 463
 464 void BufferView::Pimpl::workAreaResize()
 465 {
 466         static int work_area_width;
 467         static int work_area_height;
 468
 469         bool const widthChange = workarea().workWidth() != work_area_width;
 470         bool const heightChange = workarea().workHeight() != work_area_height;
 471
 472         // update from work area
 473         work_area_width = workarea().workWidth();
 474         work_area_height = workarea().workHeight();
 475
 476         if (buffer_ != 0) {
 477                 if (widthChange) {
 478                         // The visible LyXView need a resize
 479                         resizeCurrentBuffer();
 480
 481                         // Remove all texts from the textcache
 482                         // This is not _really_ what we want to do. What
 483                         // we really want to do is to delete in textcache
 484                         // that does not have a BufferView with matching
 485                         // width, but as long as we have only one BufferView
 486                         // deleting all gives the same result.
 487                         if (lyxerr.debugging())
 488                                 textcache.show(lyxerr, "Expose delete all");
 489                         textcache.clear();
 490                         // FIXME: this is already done in resizeCurrentBuffer() ??
 491                         buffer_->resizeInsets(bv_);
 492                 } else if (heightChange) {
 493                         // fitCursor() ensures we don't jump back
 494                         // to the start of the document on vertical
 495                         // resize
 496                         fitCursor();
 497                 }
 498         }
 499
 500         if (widthChange || heightChange) {
 501                 repaint();
 502         }
 503
 504         // always make sure that the scrollbar is sane.
 505         updateScrollbar();
 506         owner_->updateLayoutChoice();
 507         return;
 508 }
 509
 510
 511 void BufferView::Pimpl::update()
 512 {
 513         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
 514                 screen().update(*bv_);
 515                 bv_->text->clearPaint();
 516         }
 517 }
 518
 519
 520 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 521 {
 522         if (!text->selection.set() && (f & SELECT)) {
 523                 text->selection.cursor = text->cursor;
 524         }
 525
 526         text->fullRebreak();
 527
 528         if (text->inset_owner) {
 529                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 530                 updateInset(text->inset_owner);
 531         } else {
 532                 update();
 533         }
 534 }
 535
 536
 537 void BufferView::Pimpl::update(BufferView::UpdateCodes f)
 538 {
 539         LyXText * text = bv_->text;
 540
 541         if (!text->selection.set() && (f & SELECT)) {
 542                 text->selection.cursor = text->cursor;
 543         }
 544
 545         text->fullRebreak();
 546
 547         if (text->inset_owner) {
 548                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 549                 updateInset(text->inset_owner);
 550         } else {
 551                 update();
 552         }
 553 }
 554
 555
 556 // Callback for cursor timer
 557 void BufferView::Pimpl::cursorToggle()
 558 {
 559         if (!buffer_) {
 560                 cursor_timeout.restart();
 561                 return;
 562         }
 563
 564         if (!bv_->theLockingInset()) {
 565                 screen().cursorToggle(bv_);
 566         } else {
 567                 bv_->theLockingInset()->toggleInsetCursor(bv_);
 568         }
 569
 570         cursor_timeout.restart();
 571 }
 572
 573
 574 bool BufferView::Pimpl::available() const
 575 {
 576         if (buffer_ && bv_->text)
 577                 return true;
 578         return false;
 579 }
 580
 581
 582 Change const BufferView::Pimpl::getCurrentChange()
 583 {
 584         if (!bv_->buffer()->params.tracking_changes)
 585                 return Change(Change::UNCHANGED);
 586
 587         LyXText * t(bv_->getLyXText());
 588
 589         if (!t->selection.set())
 590                 return Change(Change::UNCHANGED);
 591
 592         LyXCursor const & cur(t->selection.start);
 593         return cur.par()->lookupChangeFull(cur.pos());
 594 }
 595
 596
 597 void BufferView::Pimpl::beforeChange(LyXText * text)
 598 {
 599         toggleSelection();
 600         text->clearSelection();
 601 }
 602
 603
 604 void BufferView::Pimpl::savePosition(unsigned int i)
 605 {
 606         if (i >= saved_positions_num)
 607                 return;
 608         saved_positions[i] = Position(buffer_->fileName(),
 609                                       bv_->text->cursor.par()->id(),
 610                                       bv_->text->cursor.pos());
 611         if (i > 0) {
 612                 ostringstream str;
 613 #if USE_BOOST_FORMAT
 614                 str << boost::format(_("Saved bookmark %1$d")) % i;
 615 #else
 616                 str << _("Saved bookmark ") << i;
 617 #endif
 618                 owner_->message(STRCONV(str.str()));
 619         }
 620 }
 621
 622
 623 void BufferView::Pimpl::restorePosition(unsigned int i)
 624 {
 625         if (i >= saved_positions_num)
 626                 return;
 627
 628         string const fname = saved_positions[i].filename;
 629
 630         beforeChange(bv_->text);
 631
 632         if (fname != buffer_->fileName()) {
 633                 Buffer * b = bufferlist.exists(fname) ?
 634                         bufferlist.getBuffer(fname) :
 635                         bufferlist.loadLyXFile(fname); // don't ask, just load it
 636                 if (b != 0) buffer(b);
 637         }
 638
 639         Paragraph * par = buffer_->getParFromID(saved_positions[i].par_id);
 640         if (!par)
 641                 return;
 642
 643         bv_->text->setCursor(par,
 644                              min(par->size(), saved_positions[i].par_pos));
 645
 646         update(BufferView::SELECT);
 647         if (i > 0) {
 648                 ostringstream str;
 649 #if USE_BOOST_FORMAT
 650                 str << boost::format(_("Moved to bookmark %1$d")) % i;
 651 #else
 652                 str << _("Moved to bookmark ") << i;
 653 #endif
 654                 owner_->message(STRCONV(str.str()));
 655         }
 656 }
 657
 658
 659 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 660 {
 661         if (i >= saved_positions_num)
 662                 return false;
 663
 664         return !saved_positions[i].filename.empty();
 665 }
 666
 667
 668 void BufferView::Pimpl::switchKeyMap()
 669 {
 670         if (!lyxrc.rtl_support)
 671                 return;
 672
 673         LyXText * text = bv_->getLyXText();
 674         if (text->real_current_font.isRightToLeft()
 675             && !(bv_->theLockingInset()
 676                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 677         {
 678                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 679                         owner_->getIntl().KeyMapSec();
 680         } else {
 681                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 682                         owner_->getIntl().KeyMapPrim();
 683         }
 684 }
 685
 686
 687 void BufferView::Pimpl::insetUnlock()
 688 {
 689         if (bv_->theLockingInset()) {
 690                 bv_->theLockingInset()->insetUnlock(bv_);
 691                 bv_->theLockingInset(0);
 692                 finishUndo();
 693         }
 694 }
 695
 696
 697 void BufferView::Pimpl::showCursor()
 698 {
 699         if (bv_->theLockingInset())
 700                 bv_->theLockingInset()->showInsetCursor(bv_);
 701         else
 702                 screen().showCursor(bv_->text, bv_);
 703 }
 704
 705
 706 void BufferView::Pimpl::hideCursor()
 707 {
 708         if (!bv_->theLockingInset())
 709                 screen().hideCursor();
 710 }
 711
 712
 713 void BufferView::Pimpl::toggleSelection(bool b)
 714 {
 715         if (bv_->theLockingInset())
 716                 bv_->theLockingInset()->toggleSelection(bv_, b);
 717         screen().toggleSelection(bv_->text, bv_, b);
 718 }
 719
 720
 721 void BufferView::Pimpl::toggleToggle()
 722 {
 723         screen().toggleToggle(bv_->text, bv_);
 724 }
 725
 726
 727 void BufferView::Pimpl::center()
 728 {
 729         LyXText * t = bv_->text;
 730
 731         beforeChange(t);
 732         int const half_height = workarea().workHeight() / 2;
 733         int new_y = 0;
 734
 735         if (t->cursor.y() > half_height) {
 736                 new_y = t->cursor.y() - half_height;
 737         }
 738
 739         // FIXME: look at this comment again ...
 740
 741         // FIXME: can we do this w/o calling screen directly ?
 742         // This updates top_y() but means the fitCursor() call
 743         // from the update(FITCUR) doesn't realise that we might
 744         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 745         // the scrollbar to be updated as it should, so we have
 746         // to do it manually. Any operation that does a center()
 747         // and also might have moved top_y() must make sure to call
 748         // updateScrollbar() currently. Never mind that this is a
 749         // pretty obfuscated way of updating t->top_y()
 750         screen().draw(t, bv_, new_y);
 751
 752         update(BufferView::SELECT);
 753 }
 754
 755
 756 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 757 {
 758         workarea().putClipboard(stuff);
 759 }
 760
 761
 762 /*
 763  * Dispatch functions for actions which can be valid for BufferView->text
 764  * and/or InsetText->text!!!
 765  */
 766
 767
 768 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 769 {
 770 #if 0
 771         LyXCursor cursor = bv_->getLyXText()->cursor;
 772         Buffer::inset_iterator it =
 773                 find_if(Buffer::inset_iterator(
 774                         cursor.par(), cursor.pos()),
 775                         buffer_->inset_iterator_end(),
 776                         lyx::compare_memfun(&Inset::lyxCode, code));
 777         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 778 #else
 779         // Ok, this is a little bit too brute force but it
 780         // should work for now. Better infrastructure is comming. (Lgb)
 781
 782         Buffer * b = bv_->buffer();
 783         LyXCursor cursor = bv_->getLyXText()->cursor;
 784
 785         Buffer::inset_iterator beg = b->inset_iterator_begin();
 786         Buffer::inset_iterator end = b->inset_iterator_end();
 787
 788         bool cursor_par_seen = false;
 789
 790         for (; beg != end; ++beg) {
 791                 if (beg.getPar() == cursor.par()) {
 792                         cursor_par_seen = true;
 793                 }
 794                 if (cursor_par_seen) {
 795                         if (beg.getPar() == cursor.par()
 796                             && beg.getPos() >= cursor.pos()) {
 797                                 break;
 798                         } else if (beg.getPar() != cursor.par()) {
 799                                 break;
 800                         }
 801                 }
 802
 803         }
 804         if (beg != end) {
 805                 // Now find the first inset that matches code.
 806                 for (; beg != end; ++beg) {
 807                         if (beg->lyxCode() == code) {
 808                                 return &(*beg);
 809                         }
 810                 }
 811         }
 812         return 0;
 813 #endif
 814 }
 815
 816
 817 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 818 {
 819         string filename = filen;
 820
 821         if (filename.empty()) {
 822                 // Launch a file browser
 823                 string initpath = lyxrc.document_path;
 824
 825                 if (available()) {
 826                         string const trypath = owner_->buffer()->filePath();
 827                         // If directory is writeable, use this as default.
 828                         if (IsDirWriteable(trypath))
 829                                 initpath = trypath;
 830                 }
 831
 832                 FileDialog fileDlg(_("Select LyX document to insert"),
 833                         LFUN_FILE_INSERT,
 834                         make_pair(string(_("Documents|#o#O")),
 835                                   string(lyxrc.document_path)),
 836                         make_pair(string(_("Examples|#E#e")),
 837                                   string(AddPath(system_lyxdir, "examples"))));
 838
 839                 FileDialog::Result result =
 840                         fileDlg.open(initpath,
 841                                        _("*.lyx| LyX Documents (*.lyx)"));
 842
 843                 if (result.first == FileDialog::Later)
 844                         return;
 845
 846                 filename = result.second;
 847
 848                 // check selected filename
 849                 if (filename.empty()) {
 850                         owner_->message(_("Canceled."));
 851                         return;
 852                 }
 853         }
 854
 855         // get absolute path of file and add ".lyx" to the filename if
 856         // necessary
 857         filename = FileSearch(string(), filename, "lyx");
 858
 859         string const disp_fn(MakeDisplayPath(filename));
 860
 861         ostringstream s1;
 862 #if USE_BOOST_FORMAT
 863         s1 << boost::format(_("Inserting document %1$s...")) % disp_fn;
 864 #else
 865         s1 << _("Inserting document ") << disp_fn << _("...");
 866 #endif
 867         owner_->message(STRCONV(s1.str()));
 868         bool const res = bv_->insertLyXFile(filename);
 869         if (res) {
 870                 ostringstream str;
 871 #if USE_BOOST_FORMAT
 872                 str << boost::format(_("Document %1$s inserted.")) % disp_fn;
 873 #else
 874                 str << _("Document ") << disp_fn << _(" inserted.");
 875 #endif
 876                 owner_->message(STRCONV(str.str()));
 877         } else {
 878                 ostringstream str;
 879 #if USE_BOOST_FORMAT
 880                 str << boost::format(_("Could not insert document %1$s")) % disp_fn;
 881 #else
 882                 str << _("Could not insert document ") << disp_fn;
 883 #endif
 884                 owner_->message(STRCONV(str.str()));
 885         }
 886 }
 887
 888
 889 void BufferView::Pimpl::trackChanges()
 890 {
 891         Buffer * buf(bv_->buffer());
 892         bool const tracking(buf->params.tracking_changes);
 893
 894         if (!tracking) {
 895                 ParIterator const end = buf->par_iterator_end();
 896                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it) {
 897                         (*it)->trackChanges();
 898                 }
 899                 buf->params.tracking_changes = true;
 900
 901                 // we cannot allow undos beyond the freeze point
 902                 buf->undostack.clear();
 903         } else {
 904                 update(BufferView::SELECT);
 905                 bv_->text->setCursor(&(*buf->paragraphs.begin()), 0);
 906 #warning changes FIXME
 907                 //moveCursorUpdate(false);
 908
 909                 bool found = lyxfind::findNextChange(bv_);
 910                 if (found) {
 911                         owner_->getDialogs().show("changes");
 912                         return;
 913                 }
 914
 915                 ParIterator const end = buf->par_iterator_end();
 916                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it) {
 917                         (*it)->untrackChanges();
 918                 }
 919                 buf->params.tracking_changes = false;
 920         }
 921
 922         buf->redostack.clear();
 923 }
 924
 925
 926 // Doesn't go through lyxfunc, so we need to update the
 927 // layout choice etc. ourselves
 928 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev_in)
 929 {
 930         // e.g. Qt mouse press when no buffer
 931         if (!available())
 932                 return false;
 933
 934         bool const res = dispatch(ev_in);
 935
 936         bv_->owner()->updateLayoutChoice();
 937         bv_->fitCursor();
 938
 939         return res;
 940 }
 941
 942
 943 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
 944 {
 945         // Make sure that the cached BufferView is correct.
 946         FuncRequest ev = ev_in;
 947         ev.setView(bv_);
 948
 949         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 950                 << " action[" << ev.action << ']'
 951                 << " arg[" << ev.argument << ']'
 952                 << " x[" << ev.x << ']'
 953                 << " y[" << ev.y << ']'
 954                 << " button[" << ev.button() << ']'
 955                 << endl;
 956
 957         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
 958
 959         switch (ev.action) {
 960
 961         case LFUN_SCROLL_INSET:
 962                 // this is not handled here as this function is only active
 963                 // if we have a locking_inset and that one is (or contains)
 964                 // a tabular-inset
 965                 break;
 966
 967         case LFUN_LAYOUT_COPY:
 968                 bv_->copyEnvironment();
 969                 break;
 970
 971         case LFUN_LAYOUT_PASTE:
 972                 bv_->pasteEnvironment();
 973                 switchKeyMap();
 974                 break;
 975
 976         case LFUN_FILE_INSERT:
 977                 MenuInsertLyXFile(ev.argument);
 978                 break;
 979
 980         case LFUN_FILE_INSERT_ASCII_PARA:
 981                 InsertAsciiFile(bv_, ev.argument, true);
 982                 break;
 983
 984         case LFUN_FILE_INSERT_ASCII:
 985                 InsertAsciiFile(bv_, ev.argument, false);
 986                 break;
 987
 988         case LFUN_LANGUAGE:
 989                 lang(bv_, ev.argument);
 990                 switchKeyMap();
 991                 owner_->view_state_changed();
 992                 break;
 993
 994         case LFUN_EMPH:
 995                 emph(bv_);
 996                 owner_->view_state_changed();
 997                 break;
 998
 999         case LFUN_BOLD:
1000                 bold(bv_);
1001                 owner_->view_state_changed();
1002                 break;
1003
1004         case LFUN_NOUN:
1005                 noun(bv_);
1006                 owner_->view_state_changed();
1007                 break;
1008
1009         case LFUN_CODE:
1010                 code(bv_);
1011                 owner_->view_state_changed();
1012                 break;
1013
1014         case LFUN_SANS:
1015                 sans(bv_);
1016                 owner_->view_state_changed();
1017                 break;
1018
1019         case LFUN_ROMAN:
1020                 roman(bv_);
1021                 owner_->view_state_changed();
1022                 break;
1023
1024         case LFUN_DEFAULT:
1025                 styleReset(bv_);
1026                 owner_->view_state_changed();
1027                 break;
1028
1029         case LFUN_UNDERLINE:
1030                 underline(bv_);
1031                 owner_->view_state_changed();
1032                 break;
1033
1034         case LFUN_FONT_SIZE:
1035                 fontSize(bv_, ev.argument);
1036                 owner_->view_state_changed();
1037                 break;
1038
1039         case LFUN_FONT_STATE:
1040                 owner_->getLyXFunc().setMessage(currentState(bv_));
1041                 break;
1042
1043         case LFUN_INSERT_LABEL: {
1044                 // Try and generate a valid label
1045                 string const contents = ev.argument.empty() ?
1046                         getPossibleLabel(*bv_) : ev.argument;
1047                 InsetCommandParams icp("label", contents);
1048                 string data = InsetCommandMailer::params2string("label", icp);
1049                 owner_->getDialogs().show("label", data, 0);
1050         }
1051         break;
1052
1053         case LFUN_BOOKMARK_SAVE:
1054                 savePosition(strToUnsignedInt(ev.argument));
1055                 break;
1056
1057         case LFUN_BOOKMARK_GOTO:
1058                 restorePosition(strToUnsignedInt(ev.argument));
1059                 break;
1060
1061         case LFUN_REF_GOTO: {
1062                 string label = ev.argument;
1063                 if (label.empty()) {
1064                         InsetRef * inset =
1065                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1066                         if (inset) {
1067                                 label = inset->getContents();
1068                                 savePosition(0);
1069                         }
1070                 }
1071
1072                 if (!label.empty())
1073                         bv_->gotoLabel(label);
1074         }
1075         break;
1076
1077         // --- accented characters ---------------------------
1078
1079         case LFUN_UMLAUT:
1080         case LFUN_CIRCUMFLEX:
1081         case LFUN_GRAVE:
1082         case LFUN_ACUTE:
1083         case LFUN_TILDE:
1084         case LFUN_CEDILLA:
1085         case LFUN_MACRON:
1086         case LFUN_DOT:
1087         case LFUN_UNDERDOT:
1088         case LFUN_UNDERBAR:
1089         case LFUN_CARON:
1090         case LFUN_SPECIAL_CARON:
1091         case LFUN_BREVE:
1092         case LFUN_TIE:
1093         case LFUN_HUNG_UMLAUT:
1094         case LFUN_CIRCLE:
1095         case LFUN_OGONEK:
1096                 if (ev.argument.empty()) {
1097                         // As always...
1098                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1099                 } else {
1100                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1101                         owner_->getIntl().getTransManager()
1102                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1103                         update(bv_->getLyXText(), BufferView::SELECT);
1104                 }
1105                 break;
1106
1107         case LFUN_MATH_MACRO:
1108         case LFUN_MATH_DELIM:
1109         case LFUN_INSERT_MATRIX:
1110         case LFUN_INSERT_MATH:
1111         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1112         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1113         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1114                 mathDispatch(ev);
1115                 break;
1116
1117         case LFUN_INSET_APPLY: {
1118                 string const name = ev.getArg(0);
1119
1120                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1121                 if (inset) {
1122                         // This works both for 'original' and 'mathed' insets.
1123                         // Note that the localDispatch performs updateInset
1124                         // also.
1125                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1126                         inset->localDispatch(fr);
1127                 } else {
1128                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1129                         dispatch(fr);
1130                 }
1131         }
1132         break;
1133
1134         case LFUN_INSET_INSERT: {
1135                 Inset * inset = createInset(ev);
1136                 if (inset && insertInset(inset)) {
1137                         updateInset(inset);
1138
1139                         string const name = ev.getArg(0);
1140                         if (name == "bibitem") {
1141                                 // We need to do a redraw because the maximum
1142                                 // InsetBibitem width could have changed
1143 #warning please check you mean repaint() not update(),
1144 #warning and whether the repaint() is needed at all
1145                                 bv_->repaint();
1146                                 bv_->fitCursor();
1147                         }
1148                 } else {
1149                         delete inset;
1150                 }
1151         }
1152         break;
1153
1154         case LFUN_FLOAT_LIST:
1155                 if (tclass.floats().typeExist(ev.argument)) {
1156                         Inset * inset = new InsetFloatList(ev.argument);
1157                         if (!insertInset(inset, tclass.defaultLayoutName()))
1158                                 delete inset;
1159                 } else {
1160                         lyxerr << "Non-existent float type: "
1161                                << ev.argument << endl;
1162                 }
1163                 break;
1164
1165         case LFUN_LAYOUT_PARAGRAPH: {
1166                 Paragraph const * par = bv_->getLyXText()->cursor.par();
1167                 if (!par)
1168                         break;
1169
1170                 string data;
1171                 params2string(*par, data);
1172
1173                 data = "show\n" + data;
1174                 bv_->owner()->getDialogs().show("paragraph", data);
1175                 break;
1176         }
1177
1178         case LFUN_PARAGRAPH_UPDATE: {
1179                 Paragraph const * par = bv_->getLyXText()->cursor.par();
1180                 if (!par)
1181                         break;
1182
1183                 string data;
1184                 params2string(*par, data);
1185
1186                 // Will the paragraph accept changes from the dialog?
1187                 Inset * const inset = par->inInset();
1188                 bool const accept =
1189                         !(inset && inset->forceDefaultParagraphs(inset));
1190
1191                 data = "update " + tostr(accept) + '\n' + data;
1192                 bv_->owner()->getDialogs().update("paragraph", data);
1193                 break;
1194         }
1195
1196         case LFUN_PARAGRAPH_APPLY:
1197                 setParagraphParams(*bv_, ev.argument);
1198                 break;
1199
1200         case LFUN_THESAURUS_ENTRY:
1201         {
1202                 string arg = ev.argument;
1203
1204                 if (arg.empty()) {
1205                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1206                                                                    false);
1207
1208                         // FIXME
1209                         if (arg.size() > 100 || arg.empty()) {
1210                                 // Get word or selection
1211                                 bv_->getLyXText()->selectWordWhenUnderCursor(LyXText::WHOLE_WORD);
1212                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1213                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1214                         }
1215                 }
1216
1217                 bv_->owner()->getDialogs().show("thesaurus", arg);
1218         }
1219                 break;
1220
1221         case LFUN_TRACK_CHANGES:
1222                 trackChanges();
1223                 break;
1224
1225         case LFUN_MERGE_CHANGES:
1226                 owner_->getDialogs().show("changes");
1227                 break;
1228
1229         case LFUN_ACCEPT_ALL_CHANGES: {
1230                 update(BufferView::SELECT);
1231                 bv_->text->setCursor(&(*bv_->buffer()->paragraphs.begin()), 0);
1232 #warning FIXME changes
1233                 //moveCursorUpdate(false);
1234
1235                 while (lyxfind::findNextChange(bv_)) {
1236                         bv_->getLyXText()->acceptChange();
1237                 }
1238                 update(BufferView::SELECT);
1239                 break;
1240         }
1241
1242         case LFUN_REJECT_ALL_CHANGES: {
1243                 update(BufferView::SELECT);
1244                 bv_->text->setCursor(&(*bv_->buffer()->paragraphs.begin()), 0);
1245 #warning FIXME changes
1246                 //moveCursorUpdate(false);
1247
1248                 while (lyxfind::findNextChange(bv_)) {
1249                         bv_->getLyXText()->rejectChange();
1250                 }
1251                 update(BufferView::SELECT);
1252                 break;
1253         }
1254
1255         case LFUN_ACCEPT_CHANGE: {
1256                 bv_->getLyXText()->acceptChange();
1257                 update(BufferView::SELECT);
1258                 break;
1259         }
1260
1261         case LFUN_REJECT_CHANGE: {
1262                 bv_->getLyXText()->rejectChange();
1263                 update(BufferView::SELECT);
1264                 break;
1265         }
1266
1267         case LFUN_UNKNOWN_ACTION:
1268                 ev.errorMessage(N_("Unknown function!"));
1269                 break;
1270
1271         default:
1272                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1273         } // end of switch
1274
1275         return true;
1276 }
1277
1278
1279 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1280 {
1281         // if we are in a locking inset we should try to insert the
1282         // inset there otherwise this is a illegal function now
1283         if (bv_->theLockingInset()) {
1284                 if (bv_->theLockingInset()->insetAllowed(inset))
1285                         return bv_->theLockingInset()->insertInset(bv_, inset);
1286                 return false;
1287         }
1288
1289         // not quite sure if we want this...
1290         setCursorParUndo(bv_);
1291         freezeUndo();
1292
1293         beforeChange(bv_->text);
1294         if (!lout.empty()) {
1295                 update(BufferView::SELECT);
1296                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1297                 update(BufferView::SELECT);
1298
1299                 if (!bv_->text->cursor.par()->empty()) {
1300                         bv_->text->cursorLeft(bv_);
1301
1302                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1303                         update(BufferView::SELECT);
1304                 }
1305
1306                 string lres = lout;
1307                 LyXTextClass const & tclass =
1308                         buffer_->params.getLyXTextClass();
1309                 bool hasLayout = tclass.hasLayout(lres);
1310                 string lay = tclass.defaultLayoutName();
1311
1312                 if (hasLayout != false) {
1313                         // layout found
1314                         lay = lres;
1315                 } else {
1316                         // layout not fount using default
1317                         lay = tclass.defaultLayoutName();
1318                 }
1319
1320                 bv_->text->setLayout(lay);
1321
1322                 bv_->text->setParagraph(0, 0,
1323                                    0, 0,
1324                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1325                                    Spacing(),
1326                                    LYX_ALIGN_LAYOUT,
1327                                    string(),
1328                                    0);
1329                 update(BufferView::SELECT);
1330         }
1331
1332         bv_->text->insertInset(inset);
1333         update(BufferView::SELECT);
1334
1335         unFreezeUndo();
1336         return true;
1337 }
1338
1339
1340 void BufferView::Pimpl::updateInset(Inset * inset)
1341 {
1342         if (!inset || !available())
1343                 return;
1344
1345         // first check for locking insets
1346         if (bv_->theLockingInset()) {
1347                 if (bv_->theLockingInset() == inset) {
1348                         if (bv_->text->updateInset(inset)) {
1349                                 update();
1350                                 updateScrollbar();
1351                                 return;
1352                         }
1353                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1354                         if (bv_->text->updateInset(bv_->theLockingInset())) {
1355                                 update();
1356                                 updateScrollbar();
1357                                 return;
1358                         }
1359                 }
1360         }
1361
1362         // then check if the inset is a top_level inset (has no owner)
1363         // if yes do the update as always otherwise we have to update the
1364         // toplevel inset where this inset is inside
1365         Inset * tl_inset = inset;
1366         while (tl_inset->owner())
1367                 tl_inset = tl_inset->owner();
1368         hideCursor();
1369         if (tl_inset == inset) {
1370                 update(BufferView::UPDATE);
1371                 if (bv_->text->updateInset(inset)) {
1372                         update(BufferView::SELECT);
1373                         return;
1374                 }
1375         } else if (static_cast<UpdatableInset *>(tl_inset)
1376                            ->updateInsetInInset(bv_, inset))
1377         {
1378                 if (bv_->text->updateInset(tl_inset)) {
1379                         update();
1380                         updateScrollbar();
1381                 }
1382         }
1383 }