src/frontends/LyXView.cpp

   1 /**
   2  * \file LyXView.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author John Levon
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "LyXView.h"
  15
  16 #include "Dialogs.h"
  17 #include "Toolbars.h"
  18 #include "Menubar.h"
  19 #include "WorkArea.h"
  20 #include "Gui.h"
  21
  22 #include "Buffer.h"
  23 #include "buffer_funcs.h"
  24 #include "BufferList.h"
  25 #include "BufferParams.h"
  26 #include "BufferView.h"
  27 #include "bufferview_funcs.h"
  28 #include "Cursor.h"
  29 #include "debug.h"
  30 #include "ErrorList.h"
  31 #include "FuncRequest.h"
  32 #include "gettext.h"
  33 #include "Intl.h"
  34 #include "callback.h"
  35 #include "LyX.h"
  36 #include "LyXFunc.h"
  37 #include "LyXRC.h"
  38 #include "Text.h"
  39 #include "MenuBackend.h"
  40 #include "Paragraph.h"
  41
  42 #include "controllers/ControlCommandBuffer.h"
  43
  44 #include "support/lstrings.h"
  45 #include "support/filetools.h" // OnlyFilename()
  46 #include "support/Timeout.h"
  47
  48 #include <boost/bind.hpp>
  49
  50
  51 #ifdef HAVE_SYS_TIME_H
  52 # include <sys/time.h>
  53 #endif
  54 #ifdef HAVE_UNISTD_H
  55 # include <unistd.h>
  56 #endif
  57
  58 using std::endl;
  59 using std::string;
  60
  61 namespace lyx {
  62
  63 using support::bformat;
  64 using support::FileName;
  65 using support::makeDisplayPath;
  66 using support::onlyFilename;
  67
  68 namespace frontend {
  69
  70 docstring current_layout;
  71
  72 LyXView::LyXView(int id)
  73         : toolbars_(new Toolbars(*this)),
  74           autosave_timeout_(new Timeout(5000)),
  75           dialogs_(new Dialogs(*this)),
  76           controlcommand_(new ControlCommandBuffer(*this)), id_(id)
  77 {
  78         // Start autosave timer
  79         if (lyxrc.autosave) {
  80                 autosave_timeout_->timeout.connect(boost::bind(&LyXView::autoSave, this));
  81                 autosave_timeout_->setTimeout(lyxrc.autosave * 1000);
  82                 autosave_timeout_->start();
  83         }
  84 }
  85
  86
  87 LyXView::~LyXView()
  88 {
  89         disconnectBuffer();
  90         disconnectBufferView();
  91 }
  92
  93
  94 Buffer * LyXView::buffer()
  95 {
  96         WorkArea * work_area = currentWorkArea();
  97         if (work_area)
  98                 return &work_area->bufferView().buffer();
  99         return 0;
 100 }
 101
 102
 103 Buffer const * LyXView::buffer() const
 104 {
 105         WorkArea const * work_area = currentWorkArea();
 106         if (work_area)
 107                 return &work_area->bufferView().buffer();
 108         return 0;
 109 }
 110
 111
 112 void LyXView::setBuffer(Buffer * newBuffer)
 113 {
 114         busy(true);
 115
 116         Buffer * oldBuffer = buffer();
 117         if (oldBuffer == newBuffer) {
 118                 busy(false);
 119                 return;
 120         }
 121
 122         WorkArea * wa = workArea(*newBuffer);
 123         if (wa == 0) {
 124                 updateLabels(*newBuffer->getMasterBuffer());
 125                 wa = addWorkArea(*newBuffer);
 126         } else
 127                 //Disconnect the old buffer...there's no new one.
 128                 disconnectBuffer();
 129         connectBuffer(*newBuffer);
 130         connectBufferView(wa->bufferView());
 131         setCurrentWorkArea(wa);
 132
 133         busy(false);
 134 }
 135
 136
 137 Buffer * LyXView::loadLyXFile(FileName const & filename, bool tolastfiles)
 138 {
 139         busy(true);
 140
 141         Buffer * newBuffer = checkAndLoadLyXFile(filename);
 142
 143         if (!newBuffer) {
 144                 message(_("Document not loaded."));
 145                 updateStatusBar();
 146                 busy(false);
 147                 return 0;
 148         }
 149
 150         WorkArea * wa = addWorkArea(*newBuffer);
 151
 152         // scroll to the position when the file was last closed
 153         if (lyxrc.use_lastfilepos) {
 154                 pit_type pit;
 155                 pos_type pos;
 156                 boost::tie(pit, pos) = LyX::ref().session().lastFilePos().load(filename);
 157                 // if successfully move to pit (returned par_id is not zero),
 158                 // update metrics and reset font
 159                 BufferView & bv = wa->bufferView();
 160                 if (bv.moveToPosition(pit, pos, 0, 0).get<1>()) {
 161                         if (bv.fitCursor())
 162                                 bv.updateMetrics(false);
 163                         newBuffer->text().setCurrentFont(bv.cursor());
 164                 }
 165         }
 166
 167         wa->redraw();
 168
 169         busy(false);
 170         return newBuffer;
 171 }
 172
 173
 174 void LyXView::connectBuffer(Buffer & buf)
 175 {
 176         if (errorsConnection_.connected())
 177                 disconnectBuffer();
 178
 179         bufferStructureChangedConnection_ =
 180                 buf.getMasterBuffer()->structureChanged.connect(
 181                         boost::bind(&LyXView::updateToc, this));
 182
 183         errorsConnection_ =
 184                 buf.errors.connect(
 185                         boost::bind(&LyXView::showErrorList, this, _1));
 186
 187         messageConnection_ =
 188                 buf.message.connect(
 189                         boost::bind(&LyXView::message, this, _1));
 190
 191         busyConnection_ =
 192                 buf.busy.connect(
 193                         boost::bind(&LyXView::busy, this, _1));
 194
 195         titleConnection_ =
 196                 buf.updateTitles.connect(
 197                         boost::bind(&LyXView::updateWindowTitle, this));
 198
 199         timerConnection_ =
 200                 buf.resetAutosaveTimers.connect(
 201                         boost::bind(&LyXView::resetAutosaveTimer, this));
 202
 203         readonlyConnection_ =
 204                 buf.readonly.connect(
 205                         boost::bind(&LyXView::showReadonly, this, _1));
 206 }
 207
 208
 209 void LyXView::disconnectBuffer()
 210 {
 211         errorsConnection_.disconnect();
 212         bufferStructureChangedConnection_.disconnect();
 213         messageConnection_.disconnect();
 214         busyConnection_.disconnect();
 215         titleConnection_.disconnect();
 216         timerConnection_.disconnect();
 217         readonlyConnection_.disconnect();
 218         layout_changed_connection_.disconnect();
 219 }
 220
 221
 222 void LyXView::connectBufferView(BufferView & bv)
 223 {
 224         message_connection_ = bv.message.connect(
 225                         boost::bind(&LyXView::message, this, _1));
 226         show_dialog_connection_ = bv.showDialog.connect(
 227                         boost::bind(&LyXView::showDialog, this, _1));
 228         show_dialog_with_data_connection_ = bv.showDialogWithData.connect(
 229                         boost::bind(&LyXView::showDialogWithData, this, _1, _2));
 230         show_inset_dialog_connection_ = bv.showInsetDialog.connect(
 231                         boost::bind(&LyXView::showInsetDialog, this, _1, _2, _3));
 232         update_dialog_connection_ = bv.updateDialog.connect(
 233                         boost::bind(&LyXView::updateDialog, this, _1, _2));
 234         layout_changed_connection_ = bv.layoutChanged.connect(
 235                         boost::bind(&Toolbars::setLayout, toolbars_.get(), _1));
 236 }
 237
 238
 239 void LyXView::disconnectBufferView()
 240 {
 241         message_connection_.disconnect();
 242         show_dialog_connection_.disconnect();
 243         show_dialog_with_data_connection_.disconnect();
 244         show_inset_dialog_connection_.disconnect();
 245         update_dialog_connection_.disconnect();
 246 }
 247
 248
 249 void LyXView::showErrorList(string const & error_type)
 250 {
 251         ErrorList & el = buffer()->errorList(error_type);
 252         if (!el.empty()) {
 253                 getDialogs().show("errorlist", error_type);
 254         }
 255 }
 256
 257
 258 void LyXView::showDialog(string const & name)
 259 {
 260         getDialogs().show(name);
 261 }
 262
 263
 264 void LyXView::showDialogWithData(string const & name, string const & data)
 265 {
 266         getDialogs().show(name, data);
 267 }
 268
 269
 270 void LyXView::showInsetDialog(string const & name, string const & data,
 271                 Inset * inset)
 272 {
 273         getDialogs().show(name, data, inset);
 274 }
 275
 276
 277 void LyXView::updateDialog(string const & name, string const & data)
 278 {
 279         if (getDialogs().visible(name))
 280                 getDialogs().update(name, data);
 281 }
 282
 283
 284 void LyXView::showReadonly(bool)
 285 {
 286         updateWindowTitle();
 287         getDialogs().updateBufferDependent(false);
 288 }
 289
 290
 291 BufferView * LyXView::view()
 292 {
 293         WorkArea * wa = currentWorkArea();
 294         return wa? &wa->bufferView() : 0;
 295 }
 296
 297
 298 void LyXView::updateToc()
 299 {
 300         updateDialog("toc", "");
 301 }
 302
 303
 304 void LyXView::updateToolbars()
 305 {
 306         WorkArea * wa = currentWorkArea();
 307         if (wa) {
 308                 bool const math =
 309                         wa->bufferView().cursor().inMathed();
 310                 bool const table =
 311                         lyx::getStatus(FuncRequest(LFUN_LAYOUT_TABULAR)).enabled();
 312                 bool const review =
 313                         lyx::getStatus(FuncRequest(LFUN_CHANGES_TRACK)).enabled() &&
 314                         lyx::getStatus(FuncRequest(LFUN_CHANGES_TRACK)).onoff(true);
 315
 316                 toolbars_->update(math, table, review);
 317         } else
 318                 toolbars_->update(false, false, false);
 319
 320         // update redaonly status of open dialogs. This could also be in
 321         // updateMenubar(), but since updateToolbars() and updateMenubar()
 322         // are always called together it is only here.
 323         getDialogs().checkStatus();
 324 }
 325
 326
 327 ToolbarInfo * LyXView::getToolbarInfo(string const & name)
 328 {
 329         return toolbars_->getToolbarInfo(name);
 330 }
 331
 332
 333 void LyXView::toggleToolbarState(string const & name, bool allowauto)
 334 {
 335         // it is possible to get current toolbar status like this,...
 336         // but I decide to obey the order of ToolbarBackend::flags
 337         // and disregard real toolbar status.
 338         // toolbars_->saveToolbarInfo();
 339         //
 340         // toggle state on/off/auto
 341         toolbars_->toggleToolbarState(name, allowauto);
 342         // update toolbar
 343         updateToolbars();
 344 }
 345
 346
 347 void LyXView::updateMenubar()
 348 {
 349         menubar_->update();
 350 }
 351
 352
 353 void LyXView::autoSave()
 354 {
 355         LYXERR(Debug::INFO) << "Running autoSave()" << endl;
 356
 357         if (buffer())
 358                 lyx::autoSave(view());
 359 }
 360
 361
 362 void LyXView::resetAutosaveTimer()
 363 {
 364         if (lyxrc.autosave)
 365                 autosave_timeout_->restart();
 366 }
 367
 368
 369 void LyXView::updateLayoutChoice()
 370 {
 371         // Don't show any layouts without a buffer
 372         if (!buffer()) {
 373                 toolbars_->clearLayoutList();
 374                 return;
 375         }
 376
 377         // Update the layout display
 378         if (toolbars_->updateLayoutList(buffer()->params().textclass)) {
 379                 current_layout = buffer()->params().getTextClass().defaultLayoutName();
 380         }
 381
 382         docstring const & layout = currentWorkArea()->bufferView().cursor().
 383                 innerParagraph().layout()->name();
 384
 385         if (layout != current_layout) {
 386                 toolbars_->setLayout(layout);
 387                 current_layout = layout;
 388         }
 389 }
 390
 391
 392 void LyXView::updateWindowTitle()
 393 {
 394         docstring maximize_title = lyx::from_ascii("LyX");
 395         docstring minimize_title = lyx::from_ascii("LyX");
 396
 397         Buffer * buf = buffer();
 398         if (buf) {
 399                 string const cur_title = buf->fileName();
 400                 if (!cur_title.empty()) {
 401                         maximize_title += ": " + makeDisplayPath(cur_title, 30);
 402                         minimize_title = lyx::from_utf8(onlyFilename(cur_title));
 403                         if (!buf->isClean()) {
 404                                 maximize_title += _(" (changed)");
 405                                 minimize_title += lyx::char_type('*');
 406                         }
 407                         if (buf->isReadonly())
 408                                 maximize_title += _(" (read only)");
 409                 }
 410         }
 411
 412         setWindowTitle(maximize_title, minimize_title);
 413 }
 414
 415
 416 void LyXView::dispatch(FuncRequest const & cmd)
 417 {
 418         string const argument = to_utf8(cmd.argument());
 419         switch(cmd.action) {
 420                 case LFUN_BUFFER_SWITCH:
 421                         setBuffer(theBufferList().getBuffer(to_utf8(cmd.argument())));
 422                         break;
 423                 default:
 424                         theLyXFunc().setLyXView(this);
 425                         lyx::dispatch(cmd);
 426         }
 427 }
 428
 429
 430 Buffer const * const LyXView::updateInset(Inset const * inset)
 431 {
 432         WorkArea * work_area = currentWorkArea();
 433         if (!work_area)
 434                 return 0;
 435
 436         if (inset) {
 437                 BOOST_ASSERT(work_area);
 438                 work_area->scheduleRedraw();
 439         }
 440         return &work_area->bufferView().buffer();
 441 }
 442
 443 } // namespace frontend
 444 } // namespace lyx