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Fix a few quirks and a crash introduced by a bad manual merge of local tree at revisi...
[lyx.git] / 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 #include "Dialogs.h"
16 #include "Timeout.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
47 #include <boost/bind.hpp>
48
49
50 namespace lyx {
51
52 #ifdef HAVE_SYS_TIME_H
53 # include <sys/time.h>
54 #endif
55 #ifdef HAVE_UNISTD_H
56 # include <unistd.h>
57 #endif
58
59 using frontend::WorkArea;
60
61 using support::bformat;
62 using support::FileName;
63 using support::makeDisplayPath;
64 using support::onlyFilename;
65
66 using std::endl;
67 using std::string;
68
69 using lyx::frontend::ControlCommandBuffer;
70
71 string current_layout;
72
73
74 LyXView::LyXView(int id)
75         : work_area_(0),
76           toolbars_(new Toolbars(*this)),
77           autosave_timeout_(new Timeout(5000)),
78           dialogs_(new Dialogs(*this)),
79           controlcommand_(new ControlCommandBuffer(*this)), id_(id)
80 {
81         // Start autosave timer
82         if (lyxrc.autosave) {
83                 autosave_timeout_->timeout.connect(boost::bind(&LyXView::autoSave, this));
84                 autosave_timeout_->setTimeout(lyxrc.autosave * 1000);
85                 autosave_timeout_->start();
86         }
87 }
88
89
90 LyXView::~LyXView()
91 {
92         disconnectBuffer();
93 }
94
95
96 // FIXME, there's only one WorkArea per LyXView possible for now.
97 void LyXView::setWorkArea(WorkArea * work_area)
98 {
99         BOOST_ASSERT(work_area);
100         work_area_ = work_area;
101         work_area_ids_.clear();
102         work_area_ids_.push_back(work_area_->id());
103 }
104
105
106 // FIXME, there's only one WorkArea per LyXView possible for now.
107 WorkArea const * LyXView::currentWorkArea() const
108 {
109         return work_area_;
110 }
111
112
113 // FIXME, there's only one WorkArea per LyXView possible for now.
114 WorkArea * LyXView::currentWorkArea()
115 {
116         return work_area_;
117 }
118
119
120 Buffer * LyXView::buffer() const
121 {
122         BOOST_ASSERT(work_area_);
123         return work_area_->bufferView().buffer();
124 }
125
126
127 void LyXView::setBuffer(Buffer * b, bool child_document)
128 {
129         busy(true);
130
131         BOOST_ASSERT(work_area_);
132         Buffer * oldBuffer = work_area_->bufferView().buffer();
133         // parentfilename will be used in case when we switch to a child
134         // document (hence when child_document is true)
135         string parentfilename;
136         if (oldBuffer) {
137                 parentfilename = oldBuffer->fileName();
138                 disconnectBuffer();
139         }
140
141         if (!b && theBufferList().empty())
142                 getDialogs().hideBufferDependent();
143
144         work_area_->bufferView().setBuffer(b);
145
146         //FIXME This would be a little simpler if setBuffer returned the buffer.
147         Buffer * newBuffer = work_area_->bufferView().buffer();
148         if (newBuffer) {
149                 if (child_document && newBuffer->getMasterBuffer() != oldBuffer) {
150                         // Set the parent name of the child document.
151                         // This makes insertion of citations and references in the child work,
152                         // when the target is in the parent or another child document.
153                         newBuffer->setParentName(parentfilename);
154                         // Update the labels and section numbering to the new master Buffer.
155                         updateLabels(*newBuffer->getMasterBuffer());
156                 }
157
158                 connectBuffer(*newBuffer);
159
160                 // Buffer-dependent dialogs should be updated or
161                 // hidden. This should go here because some dialogs (eg ToC)
162                 // require bv_->text.
163                 getDialogs().updateBufferDependent(true);
164         }
165
166         if (quitting)
167                 return;
168
169         updateMenubar();
170         updateToolbars();
171         updateLayoutChoice();
172         updateWindowTitle();
173         updateStatusBar();
174         updateTab();
175         busy(false);
176         work_area_->redraw();
177 }
178
179
180 bool LyXView::loadLyXFile(FileName const & filename, bool tolastfiles,
181                 bool child_document, bool auto_open)
182 {
183         busy(true);
184
185         BOOST_ASSERT(work_area_);
186         string parentfilename;
187         Buffer * oldBuffer = work_area_->bufferView().buffer();
188         if (oldBuffer)
189                 parentfilename = oldBuffer->fileName();
190
191         Buffer * newBuffer = checkAndLoadLyXFile(filename);
192
193         if (!newBuffer) {
194                 message(_("Document not loaded."));
195                 updateStatusBar();
196                 busy(false);
197                 work_area_->redraw();
198                 return false;
199         }
200
201         if (child_document && newBuffer != oldBuffer) {
202                 // Set the parent name of the child document.
203                 // This makes insertion of citations and references in the child work,
204                 // when the target is in the parent or another child document.
205                 newBuffer->setParentName(parentfilename);
206                 message(bformat(_("Opening child document %1$s..."),
207                         makeDisplayPath(filename.absFilename())));
208         }
209
210         // Update the labels and section numbering.
211         updateLabels(*newBuffer->getMasterBuffer());
212
213         bool const parse_error = !newBuffer->errorList("Parse").empty();
214         if (parse_error || !auto_open) {
215                 setBuffer(newBuffer, child_document);
216                 showErrorList("Parse");
217         }
218
219         // scroll to the position when the file was last closed
220         if (!auto_open && lyxrc.use_lastfilepos) {
221                 pit_type pit;
222                 pos_type pos;
223                 boost::tie(pit, pos) = LyX::ref().session().lastFilePos().load(filename);
224                 // if successfully move to pit (returned par_id is not zero),
225                 // update metrics and reset font
226                 if (work_area_->bufferView().moveToPosition(pit, pos, 0, 0).get<1>()) {
227                         if (work_area_->bufferView().fitCursor())
228                                 work_area_->bufferView().updateMetrics(false);
229                         newBuffer->text().setCurrentFont(work_area_->bufferView().cursor());
230                         updateMenubar();
231                         updateToolbars();
232                         updateLayoutChoice();
233                         updateStatusBar();
234                         work_area_->redraw();
235                 }
236         }
237
238         if (tolastfiles)
239                 LyX::ref().session().lastFiles().add(filename);
240
241         busy(false);
242         return true;
243 }
244
245
246 void LyXView::connectBuffer(Buffer & buf)
247 {
248         if (errorsConnection_.connected())
249                 disconnectBuffer();
250
251         BOOST_ASSERT(work_area_);
252         bufferChangedConnection_ =
253                 buf.changed.connect(
254                         boost::bind(&WorkArea::redraw, work_area_));
255
256         bufferStructureChangedConnection_ =
257                 buf.getMasterBuffer()->structureChanged.connect(
258                         boost::bind(&LyXView::updateToc, this));
259
260         errorsConnection_ =
261                 buf.errors.connect(
262                         boost::bind(&LyXView::showErrorList, this, _1));
263
264         messageConnection_ =
265                 buf.message.connect(
266                         boost::bind(&LyXView::message, this, _1));
267
268         busyConnection_ =
269                 buf.busy.connect(
270                         boost::bind(&LyXView::busy, this, _1));
271
272         titleConnection_ =
273                 buf.updateTitles.connect(
274                         boost::bind(&LyXView::updateWindowTitle, this));
275
276         timerConnection_ =
277                 buf.resetAutosaveTimers.connect(
278                         boost::bind(&LyXView::resetAutosaveTimer, this));
279
280         readonlyConnection_ =
281                 buf.readonly.connect(
282                         boost::bind(&LyXView::showReadonly, this, _1));
283
284         closingConnection_ =
285                 buf.closing.connect(
286                         boost::bind(&LyXView::setBuffer, this, (Buffer *)0, false));
287 }
288
289
290 void LyXView::disconnectBuffer()
291 {
292         errorsConnection_.disconnect();
293         bufferChangedConnection_.disconnect();
294         bufferStructureChangedConnection_.disconnect();
295         messageConnection_.disconnect();
296         busyConnection_.disconnect();
297         titleConnection_.disconnect();
298         timerConnection_.disconnect();
299         readonlyConnection_.disconnect();
300         closingConnection_.disconnect();
301         layout_changed_connection_.disconnect();
302 }
303
304
305 void LyXView::connectBufferView(BufferView & bv)
306 {
307         show_dialog_connection_ = bv.showDialog.connect(
308                         boost::bind(&LyXView::showDialog, this, _1));
309         show_dialog_with_data_connection_ = bv.showDialogWithData.connect(
310                         boost::bind(&LyXView::showDialogWithData, this, _1, _2));
311         show_inset_dialog_connection_ = bv.showInsetDialog.connect(
312                         boost::bind(&LyXView::showInsetDialog, this, _1, _2, _3));
313         update_dialog_connection_ = bv.updateDialog.connect(
314                         boost::bind(&LyXView::updateDialog, this, _1, _2));
315         layout_changed_connection_ = bv.layoutChanged.connect(
316                         boost::bind(&Toolbars::setLayout, toolbars_.get(), _1));
317 }
318
319
320 void LyXView::disconnectBufferView()
321 {
322         show_dialog_connection_.disconnect();
323         show_dialog_with_data_connection_.disconnect();
324         show_inset_dialog_connection_.disconnect();
325         update_dialog_connection_.disconnect();
326 }
327
328
329 void LyXView::showErrorList(string const & error_type)
330 {
331         ErrorList & el = buffer()->errorList(error_type);
332         if (!el.empty()) {
333                 getDialogs().show("errorlist", error_type);
334         }
335 }
336
337
338 void LyXView::showDialog(string const & name)
339 {
340         getDialogs().show(name);
341 }
342
343
344 void LyXView::showDialogWithData(string const & name, string const & data)
345 {
346         getDialogs().show(name, data);
347 }
348
349
350 void LyXView::showInsetDialog(string const & name, string const & data,
351                 Inset * inset)
352 {
353         getDialogs().show(name, data, inset);
354 }
355
356
357 void LyXView::updateDialog(string const & name, string const & data)
358 {
359         if (getDialogs().visible(name))
360                 getDialogs().update(name, data);
361 }
362
363
364 void LyXView::showReadonly(bool)
365 {
366         updateWindowTitle();
367         getDialogs().updateBufferDependent(false);
368 }
369
370
371 BufferView * LyXView::view() const
372 {
373         BOOST_ASSERT(work_area_);
374         return &work_area_->bufferView();
375 }
376
377
378 void LyXView::updateToc()
379 {
380         updateDialog("toc", "");
381 }
382
383
384 void LyXView::updateToolbars()
385 {
386         BOOST_ASSERT(work_area_);
387         bool const math =
388                 work_area_->bufferView().cursor().inMathed();
389         bool const table =
390                 lyx::getStatus(FuncRequest(LFUN_LAYOUT_TABULAR)).enabled();
391         bool const review =
392                 lyx::getStatus(FuncRequest(LFUN_CHANGES_TRACK)).enabled() &&
393                 lyx::getStatus(FuncRequest(LFUN_CHANGES_TRACK)).onoff(true);
394
395         toolbars_->update(math, table, review);
396         // update redaonly status of open dialogs. This could also be in
397         // updateMenubar(), but since updateToolbars() and updateMenubar()
398         // are always called together it is only here.
399         getDialogs().checkStatus();
400 }
401
402
403 ToolbarInfo::Flags LyXView::getToolbarState(string const & name)
404 {
405         return toolbars_->getToolbarState(name);
406 }
407
408
409 void LyXView::toggleToolbarState(string const & name, bool allowauto)
410 {
411         // it is possible to get current toolbar status like this,...
412         // but I decide to obey the order of ToolbarBackend::flags
413         // and disregard real toolbar status.
414         // toolbars_->saveToolbarInfo();
415         //
416         // toggle state on/off/auto
417         toolbars_->toggleToolbarState(name, allowauto);
418         // update toolbar
419         updateToolbars();
420 }
421
422
423 void LyXView::updateMenubar()
424 {
425         menubar_->update();
426 }
427
428
429 void LyXView::autoSave()
430 {
431         LYXERR(Debug::INFO) << "Running autoSave()" << endl;
432
433         if (view()->buffer())
434                 lyx::autoSave(view());
435 }
436
437
438 void LyXView::resetAutosaveTimer()
439 {
440         if (lyxrc.autosave)
441                 autosave_timeout_->restart();
442 }
443
444
445 void LyXView::updateLayoutChoice()
446 {
447         // Don't show any layouts without a buffer
448         if (!view()->buffer()) {
449                 toolbars_->clearLayoutList();
450                 return;
451         }
452
453         // Update the layout display
454         if (toolbars_->updateLayoutList(buffer()->params().textclass)) {
455                 current_layout = buffer()->params().getTextClass().defaultLayoutName();
456         }
457
458         BOOST_ASSERT(work_area_);
459         string const & layout = work_area_->bufferView().cursor().
460                 innerParagraph().layout()->name();
461
462         if (layout != current_layout) {
463                 toolbars_->setLayout(layout);
464                 current_layout = layout;
465         }
466 }
467
468
469 void LyXView::updateWindowTitle()
470 {
471         docstring maximize_title = lyx::from_ascii("LyX");
472         docstring minimize_title = lyx::from_ascii("LyX");
473
474         if (view()->buffer()) {
475                 string const cur_title = buffer()->fileName();
476                 if (!cur_title.empty()) {
477                         maximize_title += ": " + makeDisplayPath(cur_title, 30);
478                         minimize_title = lyx::from_utf8(onlyFilename(cur_title));
479                         if (!buffer()->isClean()) {
480                                 maximize_title += _(" (changed)");
481                                 minimize_title += lyx::char_type('*');
482                         }
483                         if (buffer()->isReadonly())
484                                 maximize_title += _(" (read only)");
485                 }
486         }
487
488         setWindowTitle(maximize_title, minimize_title);
489         updateTab();
490 }
491
492
493 void LyXView::dispatch(FuncRequest const & cmd)
494 {
495         theLyXFunc().setLyXView(this);
496         lyx::dispatch(cmd);
497 }
498
499
500 Buffer const * const LyXView::updateInset(Inset const * inset) const
501 {
502         Buffer const * buffer_ptr = 0;
503         if (inset) {
504                 BOOST_ASSERT(work_area_);
505                 work_area_->scheduleRedraw();
506
507                 buffer_ptr = work_area_->bufferView().buffer();
508         }
509         return buffer_ptr;
510 }
511
512
513 } // namespace lyx