lyx_mirror/src/Text.cpp
Richard Heck 2e7d1199df Revert 23154.
Sorry, Andre, but this broke not only the modules stuff but the general handling of TextClasses. I'm not opposed to doing this sort of thing, but it's going to be a little more complicated. I'll do it when I get a bit of time, or I can explain what the issue is here if you want to do it.

I'll separately re-commit some of the cleanup here.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@23189 a592a061-630c-0410-9148-cb99ea01b6c8
2008-02-24 14:59:23 +00:00

1464 lines
41 KiB
C++

/**
* \file src/Text.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Asger Alstrup
* \author Lars Gullik Bjønnes
* \author Dov Feldstern
* \author Jean-Marc Lasgouttes
* \author John Levon
* \author André Pönitz
* \author Stefan Schimanski
* \author Dekel Tsur
* \author Jürgen Vigna
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "Text.h"
#include "Author.h"
#include "Buffer.h"
#include "buffer_funcs.h"
#include "BufferParams.h"
#include "BufferView.h"
#include "Changes.h"
#include "Cursor.h"
#include "ParIterator.h"
#include "CutAndPaste.h"
#include "DispatchResult.h"
#include "Encoding.h"
#include "ErrorList.h"
#include "FuncRequest.h"
#include "factory.h"
#include "FontIterator.h"
#include "Language.h"
#include "Length.h"
#include "Lexer.h"
#include "LyXRC.h"
#include "Paragraph.h"
#include "paragraph_funcs.h"
#include "ParagraphParameters.h"
#include "TextClass.h"
#include "TextMetrics.h"
#include "VSpace.h"
#include "WordLangTuple.h"
#include "insets/InsetText.h"
#include "insets/InsetBibitem.h"
#include "insets/InsetCaption.h"
#include "insets/InsetHFill.h"
#include "insets/InsetLine.h"
#include "insets/InsetNewline.h"
#include "insets/InsetNewpage.h"
#include "insets/InsetOptArg.h"
#include "insets/InsetSpace.h"
#include "insets/InsetSpecialChar.h"
#include "insets/InsetTabular.h"
#include "support/convert.h"
#include "support/debug.h"
#include "support/docstream.h"
#include "support/gettext.h"
#include "support/lstrings.h"
#include "support/textutils.h"
#include <boost/next_prior.hpp>
#include <sstream>
using namespace std;
using namespace lyx::support;
namespace lyx {
using cap::cutSelection;
using cap::pasteParagraphList;
namespace {
void readParToken(Buffer const & buf, Paragraph & par, Lexer & lex,
string const & token, Font & font, Change & change, ErrorList & errorList)
{
BufferParams const & bp = buf.params();
if (token[0] != '\\') {
docstring dstr = lex.getDocString();
par.appendString(dstr, font, change);
} else if (token == "\\begin_layout") {
lex.eatLine();
docstring layoutname = lex.getDocString();
font = Font(inherit_font, bp.language);
change = Change(Change::UNCHANGED);
TextClass const & tclass = bp.getTextClass();
if (layoutname.empty())
layoutname = tclass.defaultLayoutName();
if (par.forceEmptyLayout()) {
// in this case only the empty layout is allowed
layoutname = tclass.emptyLayoutName();
} else if (par.useEmptyLayout()) {
// in this case, default layout maps to empty layout
if (layoutname == tclass.defaultLayoutName())
layoutname = tclass.emptyLayoutName();
} else {
// otherwise, the empty layout maps to the default
if (layoutname == tclass.emptyLayoutName())
layoutname = tclass.defaultLayoutName();
}
bool hasLayout = tclass.hasLayout(layoutname);
if (!hasLayout) {
errorList.push_back(ErrorItem(_("Unknown layout"),
bformat(_("Layout '%1$s' does not exist in textclass '%2$s'\nTrying to use the default instead.\n"),
layoutname, from_utf8(tclass.name())), par.id(), 0, par.size()));
layoutname = par.useEmptyLayout() ?
tclass.emptyLayoutName() :
tclass.defaultLayoutName();
}
par.setLayout(bp.getTextClass()[layoutname]);
// Test whether the layout is obsolete.
LayoutPtr const & layout = par.layout();
if (!layout->obsoleted_by().empty())
par.setLayout(bp.getTextClass()[layout->obsoleted_by()]);
par.params().read(lex);
} else if (token == "\\end_layout") {
LYXERR0("Solitary \\end_layout in line " << lex.getLineNo() << "\n"
<< "Missing \\begin_layout ?");
} else if (token == "\\end_inset") {
LYXERR0("Solitary \\end_inset in line " << lex.getLineNo() << "\n"
<< "Missing \\begin_inset ?");
} else if (token == "\\begin_inset") {
Inset * inset = readInset(lex, buf);
if (inset)
par.insertInset(par.size(), inset, font, change);
else {
lex.eatLine();
docstring line = lex.getDocString();
errorList.push_back(ErrorItem(_("Unknown Inset"), line,
par.id(), 0, par.size()));
}
} else if (token == "\\family") {
lex.next();
setLyXFamily(lex.getString(), font.fontInfo());
} else if (token == "\\series") {
lex.next();
setLyXSeries(lex.getString(), font.fontInfo());
} else if (token == "\\shape") {
lex.next();
setLyXShape(lex.getString(), font.fontInfo());
} else if (token == "\\size") {
lex.next();
setLyXSize(lex.getString(), font.fontInfo());
} else if (token == "\\lang") {
lex.next();
string const tok = lex.getString();
Language const * lang = languages.getLanguage(tok);
if (lang) {
font.setLanguage(lang);
} else {
font.setLanguage(bp.language);
lex.printError("Unknown language `$$Token'");
}
} else if (token == "\\numeric") {
lex.next();
font.fontInfo().setNumber(font.setLyXMisc(lex.getString()));
} else if (token == "\\emph") {
lex.next();
font.fontInfo().setEmph(font.setLyXMisc(lex.getString()));
} else if (token == "\\bar") {
lex.next();
string const tok = lex.getString();
if (tok == "under")
font.fontInfo().setUnderbar(FONT_ON);
else if (tok == "no")
font.fontInfo().setUnderbar(FONT_OFF);
else if (tok == "default")
font.fontInfo().setUnderbar(FONT_INHERIT);
else
lex.printError("Unknown bar font flag "
"`$$Token'");
} else if (token == "\\noun") {
lex.next();
font.fontInfo().setNoun(font.setLyXMisc(lex.getString()));
} else if (token == "\\color") {
lex.next();
setLyXColor(lex.getString(), font.fontInfo());
} else if (token == "\\InsetSpace" || token == "\\SpecialChar") {
// Insets don't make sense in a free-spacing context! ---Kayvan
if (par.isFreeSpacing()) {
if (token == "\\InsetSpace")
par.appendChar(' ', font, change);
else if (lex.isOK()) {
lex.next();
string const next_token = lex.getString();
if (next_token == "\\-")
par.appendChar('-', font, change);
else {
lex.printError("Token `$$Token' "
"is in free space "
"paragraph layout!");
}
}
} else {
auto_ptr<Inset> inset;
if (token == "\\SpecialChar" )
inset.reset(new InsetSpecialChar);
else
inset.reset(new InsetSpace);
inset->read(buf, lex);
par.insertInset(par.size(), inset.release(),
font, change);
}
} else if (token == "\\backslash") {
par.appendChar('\\', font, change);
} else if (token == "\\linebreak") {
auto_ptr<Inset> inset(new InsetLinebreak);
inset->read(buf, lex);
par.insertInset(par.size(), inset.release(), font, change);
} else if (token == "\\newline") {
auto_ptr<Inset> inset(new InsetNewline);
inset->read(buf, lex);
par.insertInset(par.size(), inset.release(), font, change);
} else if (token == "\\LyXTable") {
auto_ptr<Inset> inset(new InsetTabular(buf));
inset->read(buf, lex);
par.insertInset(par.size(), inset.release(), font, change);
} else if (token == "\\hfill") {
par.insertInset(par.size(), new InsetHFill, font, change);
} else if (token == "\\lyxline") {
par.insertInset(par.size(), new InsetLine, font, change);
} else if (token == "\\newpage") {
par.insertInset(par.size(), new InsetNewpage, font, change);
} else if (token == "\\pagebreak") {
par.insertInset(par.size(), new InsetPagebreak, font, change);
} else if (token == "\\clearpage") {
par.insertInset(par.size(), new InsetClearPage, font, change);
} else if (token == "\\cleardoublepage") {
par.insertInset(par.size(), new InsetClearDoublePage, font, change);
} else if (token == "\\change_unchanged") {
change = Change(Change::UNCHANGED);
} else if (token == "\\change_inserted") {
lex.eatLine();
istringstream is(lex.getString());
unsigned int aid;
time_t ct;
is >> aid >> ct;
if (aid >= bp.author_map.size()) {
errorList.push_back(ErrorItem(_("Change tracking error"),
bformat(_("Unknown author index for insertion: %1$d\n"), aid),
par.id(), 0, par.size()));
change = Change(Change::UNCHANGED);
} else
change = Change(Change::INSERTED, bp.author_map[aid], ct);
} else if (token == "\\change_deleted") {
lex.eatLine();
istringstream is(lex.getString());
unsigned int aid;
time_t ct;
is >> aid >> ct;
if (aid >= bp.author_map.size()) {
errorList.push_back(ErrorItem(_("Change tracking error"),
bformat(_("Unknown author index for deletion: %1$d\n"), aid),
par.id(), 0, par.size()));
change = Change(Change::UNCHANGED);
} else
change = Change(Change::DELETED, bp.author_map[aid], ct);
} else {
lex.eatLine();
errorList.push_back(ErrorItem(_("Unknown token"),
bformat(_("Unknown token: %1$s %2$s\n"), from_utf8(token),
lex.getDocString()),
par.id(), 0, par.size()));
}
}
void readParagraph(Buffer const & buf, Paragraph & par, Lexer & lex,
ErrorList & errorList)
{
lex.nextToken();
string token = lex.getString();
Font font;
Change change(Change::UNCHANGED);
while (lex.isOK()) {
readParToken(buf, par, lex, token, font, change, errorList);
lex.nextToken();
token = lex.getString();
if (token.empty())
continue;
if (token == "\\end_layout") {
//Ok, paragraph finished
break;
}
LYXERR(Debug::PARSER, "Handling paragraph token: `" << token << '\'');
if (token == "\\begin_layout" || token == "\\end_document"
|| token == "\\end_inset" || token == "\\begin_deeper"
|| token == "\\end_deeper") {
lex.pushToken(token);
lyxerr << "Paragraph ended in line "
<< lex.getLineNo() << "\n"
<< "Missing \\end_layout.\n";
break;
}
}
// Final change goes to paragraph break:
par.setChange(par.size(), change);
// Initialize begin_of_body_ on load; redoParagraph maintains
par.setBeginOfBody();
}
} // namespace anon
bool Text::empty() const
{
return pars_.empty() || (pars_.size() == 1 && pars_[0].empty()
// FIXME: Should we consider the labeled type as empty too?
&& pars_[0].layout()->labeltype == LABEL_NO_LABEL);
}
double Text::spacing(Buffer const & buffer, Paragraph const & par) const
{
if (par.params().spacing().isDefault())
return buffer.params().spacing().getValue();
return par.params().spacing().getValue();
}
void Text::breakParagraph(Cursor & cur, bool inverse_logic)
{
BOOST_ASSERT(this == cur.text());
Paragraph & cpar = cur.paragraph();
pit_type cpit = cur.pit();
TextClass const & tclass = cur.buffer().params().getTextClass();
LayoutPtr const & layout = cpar.layout();
// this is only allowed, if the current paragraph is not empty
// or caption and if it has not the keepempty flag active
if (cur.lastpos() == 0 && !cpar.allowEmpty() &&
layout->labeltype != LABEL_SENSITIVE)
return;
// a layout change may affect also the following paragraph
recUndo(cur, cur.pit(), undoSpan(cur.pit()) - 1);
// Always break behind a space
// It is better to erase the space (Dekel)
if (cur.pos() != cur.lastpos() && cpar.isLineSeparator(cur.pos()))
cpar.eraseChar(cur.pos(), cur.buffer().params().trackChanges);
// What should the layout for the new paragraph be?
bool keep_layout = inverse_logic ?
!layout->isEnvironment()
: layout->isEnvironment();
// We need to remember this before we break the paragraph, because
// that invalidates the layout variable
bool sensitive = layout->labeltype == LABEL_SENSITIVE;
// we need to set this before we insert the paragraph.
bool const isempty = cpar.allowEmpty() && cpar.empty();
lyx::breakParagraph(cur.buffer().params(), paragraphs(), cpit,
cur.pos(), keep_layout);
// After this, neither paragraph contains any rows!
cpit = cur.pit();
pit_type next_par = cpit + 1;
// well this is the caption hack since one caption is really enough
if (sensitive) {
if (cur.pos() == 0)
// set to standard-layout
//FIXME Check if this should be emptyLayout() in some cases
pars_[cpit].applyLayout(tclass.defaultLayout());
else
// set to standard-layout
//FIXME Check if this should be emptyLayout() in some cases
pars_[next_par].applyLayout(tclass.defaultLayout());
}
while (!pars_[next_par].empty() && pars_[next_par].isNewline(0)) {
if (!pars_[next_par].eraseChar(0, cur.buffer().params().trackChanges))
break; // the character couldn't be deleted physically due to change tracking
}
updateLabels(cur.buffer());
// A singlePar update is not enough in this case.
cur.updateFlags(Update::Force);
// This check is necessary. Otherwise the new empty paragraph will
// be deleted automatically. And it is more friendly for the user!
if (cur.pos() != 0 || isempty)
setCursor(cur, cur.pit() + 1, 0);
else
setCursor(cur, cur.pit(), 0);
}
// insert a character, moves all the following breaks in the
// same Paragraph one to the right and make a rebreak
void Text::insertChar(Cursor & cur, char_type c)
{
BOOST_ASSERT(this == cur.text());
cur.recordUndo(INSERT_UNDO);
TextMetrics const & tm = cur.bv().textMetrics(this);
Buffer const & buffer = cur.buffer();
Paragraph & par = cur.paragraph();
// try to remove this
pit_type const pit = cur.pit();
bool const freeSpacing = par.layout()->free_spacing ||
par.isFreeSpacing();
if (lyxrc.auto_number) {
static docstring const number_operators = from_ascii("+-/*");
static docstring const number_unary_operators = from_ascii("+-");
static docstring const number_seperators = from_ascii(".,:");
if (cur.current_font.fontInfo().number() == FONT_ON) {
if (!isDigit(c) && !contains(number_operators, c) &&
!(contains(number_seperators, c) &&
cur.pos() != 0 &&
cur.pos() != cur.lastpos() &&
tm.getDisplayFont(pit, cur.pos()).fontInfo().number() == FONT_ON &&
tm.getDisplayFont(pit, cur.pos() - 1).fontInfo().number() == FONT_ON)
)
number(cur); // Set current_font.number to OFF
} else if (isDigit(c) &&
cur.real_current_font.isVisibleRightToLeft()) {
number(cur); // Set current_font.number to ON
if (cur.pos() != 0) {
char_type const c = par.getChar(cur.pos() - 1);
if (contains(number_unary_operators, c) &&
(cur.pos() == 1
|| par.isSeparator(cur.pos() - 2)
|| par.isNewline(cur.pos() - 2))
) {
setCharFont(buffer, pit, cur.pos() - 1, cur.current_font,
tm.font_);
} else if (contains(number_seperators, c)
&& cur.pos() >= 2
&& tm.getDisplayFont(pit, cur.pos() - 2).fontInfo().number() == FONT_ON) {
setCharFont(buffer, pit, cur.pos() - 1, cur.current_font,
tm.font_);
}
}
}
}
// In Bidi text, we want spaces to be treated in a special way: spaces
// which are between words in different languages should get the
// paragraph's language; otherwise, spaces should keep the language
// they were originally typed in. This is only in effect while typing;
// after the text is already typed in, the user can always go back and
// explicitly set the language of a space as desired. But 99.9% of the
// time, what we're doing here is what the user actually meant.
//
// The following cases are the ones in which the language of the space
// should be changed to match that of the containing paragraph. In the
// depictions, lowercase is LTR, uppercase is RTL, underscore (_)
// represents a space, pipe (|) represents the cursor position (so the
// character before it is the one just typed in). The different cases
// are depicted logically (not visually), from left to right:
//
// 1. A_a|
// 2. a_A|
//
// Theoretically, there are other situations that we should, perhaps, deal
// with (e.g.: a|_A, A|_a). In practice, though, there really isn't any
// point (to understand why, just try to create this situation...).
if ((cur.pos() >= 2) && (par.isLineSeparator(cur.pos() - 1))) {
// get font in front and behind the space in question. But do NOT
// use getFont(cur.pos()) because the character c is not inserted yet
Font const pre_space_font = tm.getDisplayFont(cur.pit(), cur.pos() - 2);
Font const & post_space_font = cur.real_current_font;
bool pre_space_rtl = pre_space_font.isVisibleRightToLeft();
bool post_space_rtl = post_space_font.isVisibleRightToLeft();
if (pre_space_rtl != post_space_rtl) {
// Set the space's language to match the language of the
// adjacent character whose direction is the paragraph's
// direction; don't touch other properties of the font
Language const * lang =
(pre_space_rtl == par.isRTL(buffer.params())) ?
pre_space_font.language() : post_space_font.language();
Font space_font = tm.getDisplayFont(cur.pit(), cur.pos() - 1);
space_font.setLanguage(lang);
par.setFont(cur.pos() - 1, space_font);
}
}
// Next check, if there will be two blanks together or a blank at
// the beginning of a paragraph.
// I decided to handle blanks like normal characters, the main
// difference are the special checks when calculating the row.fill
// (blank does not count at the end of a row) and the check here
// When the free-spacing option is set for the current layout,
// disable the double-space checking
if (!freeSpacing && isLineSeparatorChar(c)) {
if (cur.pos() == 0) {
static bool sent_space_message = false;
if (!sent_space_message) {
cur.message(_("You cannot insert a space at the "
"beginning of a paragraph. Please read the Tutorial."));
sent_space_message = true;
}
return;
}
BOOST_ASSERT(cur.pos() > 0);
if ((par.isLineSeparator(cur.pos() - 1) || par.isNewline(cur.pos() - 1))
&& !par.isDeleted(cur.pos() - 1)) {
static bool sent_space_message = false;
if (!sent_space_message) {
cur.message(_("You cannot type two spaces this way. "
"Please read the Tutorial."));
sent_space_message = true;
}
return;
}
}
par.insertChar(cur.pos(), c, cur.current_font, cur.buffer().params().trackChanges);
cur.checkBufferStructure();
// cur.updateFlags(Update::Force);
setCursor(cur.top(), cur.pit(), cur.pos() + 1);
charInserted(cur);
}
void Text::charInserted(Cursor & cur)
{
Paragraph & par = cur.paragraph();
// Here we call finishUndo for every 20 characters inserted.
// This is from my experience how emacs does it. (Lgb)
static unsigned int counter;
if (counter < 20) {
++counter;
} else {
cur.finishUndo();
counter = 0;
}
// register word if a non-letter was entered
if (cur.pos() > 1
&& par.isLetter(cur.pos() - 2)
&& !par.isLetter(cur.pos() - 1)) {
// get the word in front of cursor
BOOST_ASSERT(this == cur.text());
CursorSlice focus = cur.top();
focus.backwardPos();
CursorSlice from = focus;
CursorSlice to = focus;
getWord(from, to, PREVIOUS_WORD);
if (focus == from || to == from)
return;
docstring word
= par.asString(cur.buffer(), from.pos(), to.pos(), false);
// register words longer than 5 characters
if (word.length() > 5)
cur.buffer().registerWord(word);
}
}
// the cursor set functions have a special mechanism. When they
// realize, that you left an empty paragraph, they will delete it.
bool Text::cursorForwardOneWord(Cursor & cur)
{
BOOST_ASSERT(this == cur.text());
Cursor old = cur;
if (old.pos() == old.lastpos() && old.pit() != old.lastpit()) {
++old.pit();
old.pos() = 0;
} else {
// Advance through word.
while (old.pos() != old.lastpos() && old.paragraph().isLetter(old.pos()))
++old.pos();
// Skip through trailing nonword stuff.
while (old.pos() != old.lastpos() && !old.paragraph().isLetter(old.pos()))
++old.pos();
}
return setCursor(cur, old.pit(), old.pos());
}
bool Text::cursorBackwardOneWord(Cursor & cur)
{
BOOST_ASSERT(this == cur.text());
Cursor old = cur;
if (old.pos() == 0 && old.pit() != 0) {
--old.pit();
old.pos() = old.lastpos();
} else {
// Skip through initial nonword stuff.
while (old.pos() != 0 && !old.paragraph().isLetter(old.pos() - 1))
--old.pos();
// Advance through word.
while (old.pos() != 0 && old.paragraph().isLetter(old.pos() - 1))
--old.pos();
}
return setCursor(cur, old.pit(), old.pos());
}
void Text::selectWord(Cursor & cur, word_location loc)
{
BOOST_ASSERT(this == cur.text());
CursorSlice from = cur.top();
CursorSlice to = cur.top();
getWord(from, to, loc);
if (cur.top() != from)
setCursor(cur, from.pit(), from.pos());
if (to == from)
return;
cur.resetAnchor();
setCursor(cur, to.pit(), to.pos());
cur.setSelection();
}
// Select the word currently under the cursor when no
// selection is currently set
bool Text::selectWordWhenUnderCursor(Cursor & cur, word_location loc)
{
BOOST_ASSERT(this == cur.text());
if (cur.selection())
return false;
selectWord(cur, loc);
return cur.selection();
}
void Text::acceptOrRejectChanges(Cursor & cur, ChangeOp op)
{
BOOST_ASSERT(this == cur.text());
if (!cur.selection())
return;
cur.recordUndoSelection();
pit_type begPit = cur.selectionBegin().pit();
pit_type endPit = cur.selectionEnd().pit();
pos_type begPos = cur.selectionBegin().pos();
pos_type endPos = cur.selectionEnd().pos();
// keep selection info, because endPos becomes invalid after the first loop
bool endsBeforeEndOfPar = (endPos < pars_[endPit].size());
// first, accept/reject changes within each individual paragraph (do not consider end-of-par)
for (pit_type pit = begPit; pit <= endPit; ++pit) {
pos_type parSize = pars_[pit].size();
// ignore empty paragraphs; otherwise, an assertion will fail for
// acceptChanges(bparams, 0, 0) or rejectChanges(bparams, 0, 0)
if (parSize == 0)
continue;
// do not consider first paragraph if the cursor starts at pos size()
if (pit == begPit && begPos == parSize)
continue;
// do not consider last paragraph if the cursor ends at pos 0
if (pit == endPit && endPos == 0)
break; // last iteration anyway
pos_type left = (pit == begPit ? begPos : 0);
pos_type right = (pit == endPit ? endPos : parSize);
if (op == ACCEPT) {
pars_[pit].acceptChanges(cur.buffer().params(), left, right);
} else {
pars_[pit].rejectChanges(cur.buffer().params(), left, right);
}
}
// next, accept/reject imaginary end-of-par characters
for (pit_type pit = begPit; pit <= endPit; ++pit) {
pos_type pos = pars_[pit].size();
// skip if the selection ends before the end-of-par
if (pit == endPit && endsBeforeEndOfPar)
break; // last iteration anyway
// skip if this is not the last paragraph of the document
// note: the user should be able to accept/reject the par break of the last par!
if (pit == endPit && pit + 1 != int(pars_.size()))
break; // last iteration anway
if (op == ACCEPT) {
if (pars_[pit].isInserted(pos)) {
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else if (pars_[pit].isDeleted(pos)) {
if (pit + 1 == int(pars_.size())) {
// we cannot remove a par break at the end of the last paragraph;
// instead, we mark it unchanged
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else {
mergeParagraph(cur.buffer().params(), pars_, pit);
--endPit;
--pit;
}
}
} else {
if (pars_[pit].isDeleted(pos)) {
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else if (pars_[pit].isInserted(pos)) {
if (pit + 1 == int(pars_.size())) {
// we mark the par break at the end of the last paragraph unchanged
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else {
mergeParagraph(cur.buffer().params(), pars_, pit);
--endPit;
--pit;
}
}
}
}
// finally, invoke the DEPM
deleteEmptyParagraphMechanism(begPit, endPit, cur.buffer().params().trackChanges);
//
cur.finishUndo();
cur.clearSelection();
setCursorIntern(cur, begPit, begPos);
cur.updateFlags(Update::Force);
updateLabels(cur.buffer());
}
void Text::acceptChanges(BufferParams const & bparams)
{
lyx::acceptChanges(pars_, bparams);
deleteEmptyParagraphMechanism(0, pars_.size() - 1, bparams.trackChanges);
}
void Text::rejectChanges(BufferParams const & bparams)
{
pit_type pars_size = static_cast<pit_type>(pars_.size());
// first, reject changes within each individual paragraph
// (do not consider end-of-par)
for (pit_type pit = 0; pit < pars_size; ++pit) {
if (!pars_[pit].empty()) // prevent assertion failure
pars_[pit].rejectChanges(bparams, 0, pars_[pit].size());
}
// next, reject imaginary end-of-par characters
for (pit_type pit = 0; pit < pars_size; ++pit) {
pos_type pos = pars_[pit].size();
if (pars_[pit].isDeleted(pos)) {
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else if (pars_[pit].isInserted(pos)) {
if (pit == pars_size - 1) {
// we mark the par break at the end of the last
// paragraph unchanged
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else {
mergeParagraph(bparams, pars_, pit);
--pit;
--pars_size;
}
}
}
// finally, invoke the DEPM
deleteEmptyParagraphMechanism(0, pars_size - 1, bparams.trackChanges);
}
void Text::deleteWordForward(Cursor & cur)
{
BOOST_ASSERT(this == cur.text());
if (cur.lastpos() == 0)
cursorForward(cur);
else {
cur.resetAnchor();
cur.selection() = true;
cursorForwardOneWord(cur);
cur.setSelection();
cutSelection(cur, true, false);
cur.checkBufferStructure();
}
}
void Text::deleteWordBackward(Cursor & cur)
{
BOOST_ASSERT(this == cur.text());
if (cur.lastpos() == 0)
cursorBackward(cur);
else {
cur.resetAnchor();
cur.selection() = true;
cursorBackwardOneWord(cur);
cur.setSelection();
cutSelection(cur, true, false);
cur.checkBufferStructure();
}
}
// Kill to end of line.
void Text::changeCase(Cursor & cur, TextCase action)
{
BOOST_ASSERT(this == cur.text());
CursorSlice from;
CursorSlice to;
bool gotsel = false;
if (cur.selection()) {
from = cur.selBegin();
to = cur.selEnd();
gotsel = true;
} else {
from = cur.top();
getWord(from, to, PARTIAL_WORD);
cursorForwardOneWord(cur);
}
cur.recordUndoSelection();
pit_type begPit = from.pit();
pit_type endPit = to.pit();
pos_type begPos = from.pos();
pos_type endPos = to.pos();
pos_type right = 0; // needed after the for loop
for (pit_type pit = begPit; pit <= endPit; ++pit) {
Paragraph & par = pars_[pit];
pos_type const pos = (pit == begPit ? begPos : 0);
right = (pit == endPit ? endPos : par.size());
par.changeCase(cur.buffer().params(), pos, right, action);
}
// the selection may have changed due to logically-only deleted chars
if (gotsel) {
setCursor(cur, begPit, begPos);
cur.resetAnchor();
setCursor(cur, endPit, right);
cur.setSelection();
} else
setCursor(cur, endPit, right);
cur.checkBufferStructure();
}
bool Text::handleBibitems(Cursor & cur)
{
if (cur.paragraph().layout()->labeltype != LABEL_BIBLIO)
return false;
if (cur.pos() != 0)
return false;
BufferParams const & bufparams = cur.buffer().params();
Paragraph const & par = cur.paragraph();
Cursor prevcur = cur;
if (cur.pit() > 0) {
--prevcur.pit();
prevcur.pos() = prevcur.lastpos();
}
Paragraph const & prevpar = prevcur.paragraph();
// if a bibitem is deleted, merge with previous paragraph
// if this is a bibliography item as well
if (cur.pit() > 0 && par.layout() == prevpar.layout()) {
cur.recordUndo(ATOMIC_UNDO, prevcur.pit());
mergeParagraph(bufparams, cur.text()->paragraphs(),
prevcur.pit());
updateLabels(cur.buffer());
setCursorIntern(cur, prevcur.pit(), prevcur.pos());
cur.updateFlags(Update::Force);
return true;
}
// otherwise reset to default
if (par.useEmptyLayout())
cur.paragraph().setLayout(bufparams.getTextClass().emptyLayout());
else
cur.paragraph().setLayout(bufparams.getTextClass().defaultLayout());
return true;
}
bool Text::erase(Cursor & cur)
{
BOOST_ASSERT(this == cur.text());
bool needsUpdate = false;
Paragraph & par = cur.paragraph();
if (cur.pos() != cur.lastpos()) {
// this is the code for a normal delete, not pasting
// any paragraphs
cur.recordUndo(DELETE_UNDO);
bool const was_inset = cur.paragraph().isInset(cur.pos());
if(!par.eraseChar(cur.pos(), cur.buffer().params().trackChanges))
// the character has been logically deleted only => skip it
cur.top().forwardPos();
if (was_inset)
updateLabels(cur.buffer());
else
cur.checkBufferStructure();
needsUpdate = true;
} else {
if (cur.pit() == cur.lastpit())
return dissolveInset(cur);
if (!par.isMergedOnEndOfParDeletion(cur.buffer().params().trackChanges)) {
par.setChange(cur.pos(), Change(Change::DELETED));
cur.forwardPos();
needsUpdate = true;
} else {
setCursorIntern(cur, cur.pit() + 1, 0);
needsUpdate = backspacePos0(cur);
}
}
needsUpdate |= handleBibitems(cur);
if (needsUpdate) {
// Make sure the cursor is correct. Is this really needed?
// No, not really... at least not here!
cur.text()->setCursor(cur.top(), cur.pit(), cur.pos());
cur.checkBufferStructure();
}
return needsUpdate;
}
bool Text::backspacePos0(Cursor & cur)
{
BOOST_ASSERT(this == cur.text());
if (cur.pit() == 0)
return false;
bool needsUpdate = false;
BufferParams const & bufparams = cur.buffer().params();
TextClass const & tclass = bufparams.getTextClass();
ParagraphList & plist = cur.text()->paragraphs();
Paragraph const & par = cur.paragraph();
Cursor prevcur = cur;
--prevcur.pit();
prevcur.pos() = prevcur.lastpos();
Paragraph const & prevpar = prevcur.paragraph();
// is it an empty paragraph?
if (cur.lastpos() == 0
|| (cur.lastpos() == 1 && par.isSeparator(0))) {
cur.recordUndo(ATOMIC_UNDO, prevcur.pit(), cur.pit());
plist.erase(boost::next(plist.begin(), cur.pit()));
needsUpdate = true;
}
// is previous par empty?
else if (prevcur.lastpos() == 0
|| (prevcur.lastpos() == 1 && prevpar.isSeparator(0))) {
cur.recordUndo(ATOMIC_UNDO, prevcur.pit(), cur.pit());
plist.erase(boost::next(plist.begin(), prevcur.pit()));
needsUpdate = true;
}
// Pasting is not allowed, if the paragraphs have different
// layouts. I think it is a real bug of all other
// word processors to allow it. It confuses the user.
// Correction: Pasting is always allowed with standard-layout
// or the empty layout.
else if (par.layout() == prevpar.layout()
|| par.layout() == tclass.defaultLayout()
|| par.layout() == tclass.emptyLayout()) {
cur.recordUndo(ATOMIC_UNDO, prevcur.pit());
mergeParagraph(bufparams, plist, prevcur.pit());
needsUpdate = true;
}
if (needsUpdate) {
updateLabels(cur.buffer());
setCursorIntern(cur, prevcur.pit(), prevcur.pos());
}
return needsUpdate;
}
bool Text::backspace(Cursor & cur)
{
BOOST_ASSERT(this == cur.text());
bool needsUpdate = false;
if (cur.pos() == 0) {
if (cur.pit() == 0)
return dissolveInset(cur);
Paragraph & prev_par = pars_[cur.pit() - 1];
if (!prev_par.isMergedOnEndOfParDeletion(cur.buffer().params().trackChanges)) {
prev_par.setChange(prev_par.size(), Change(Change::DELETED));
setCursorIntern(cur, cur.pit() - 1, prev_par.size());
return true;
}
// The cursor is at the beginning of a paragraph, so
// the backspace will collapse two paragraphs into one.
needsUpdate = backspacePos0(cur);
} else {
// this is the code for a normal backspace, not pasting
// any paragraphs
cur.recordUndo(DELETE_UNDO);
// We used to do cursorBackwardIntern() here, but it is
// not a good idea since it triggers the auto-delete
// mechanism. So we do a cursorBackwardIntern()-lite,
// without the dreaded mechanism. (JMarc)
setCursorIntern(cur, cur.pit(), cur.pos() - 1,
false, cur.boundary());
bool const was_inset = cur.paragraph().isInset(cur.pos());
cur.paragraph().eraseChar(cur.pos(), cur.buffer().params().trackChanges);
if (was_inset)
updateLabels(cur.buffer());
else
cur.checkBufferStructure();
}
if (cur.pos() == cur.lastpos())
cur.setCurrentFont();
needsUpdate |= handleBibitems(cur);
// A singlePar update is not enough in this case.
// cur.updateFlags(Update::Force);
setCursor(cur.top(), cur.pit(), cur.pos());
return needsUpdate;
}
bool Text::dissolveInset(Cursor & cur) {
BOOST_ASSERT(this == cur.text());
if (isMainText(cur.bv().buffer()) || cur.inset().nargs() != 1)
return false;
cur.recordUndoInset();
cur.mark() = false;
cur.selHandle(false);
// save position
pos_type spos = cur.pos();
pit_type spit = cur.pit();
ParagraphList plist;
if (cur.lastpit() != 0 || cur.lastpos() != 0)
plist = paragraphs();
cur.popBackward();
// store cursor offset
if (spit == 0)
spos += cur.pos();
spit += cur.pit();
Buffer & b = cur.buffer();
cur.paragraph().eraseChar(cur.pos(), b.params().trackChanges);
if (!plist.empty()) {
// ERT paragraphs have the Language latex_language.
// This is invalid outside of ERT, so we need to
// change it to the buffer language.
ParagraphList::iterator it = plist.begin();
ParagraphList::iterator it_end = plist.end();
for (; it != it_end; it++)
it->changeLanguage(b.params(), latex_language, b.language());
pasteParagraphList(cur, plist, b.params().getTextClassPtr(),
b.errorList("Paste"));
// restore position
cur.pit() = min(cur.lastpit(), spit);
cur.pos() = min(cur.lastpos(), spos);
}
cur.clearSelection();
cur.resetAnchor();
return true;
}
void Text::getWord(CursorSlice & from, CursorSlice & to,
word_location const loc)
{
Paragraph const & from_par = pars_[from.pit()];
switch (loc) {
case WHOLE_WORD_STRICT:
if (from.pos() == 0 || from.pos() == from_par.size()
|| !from_par.isLetter(from.pos())
|| !from_par.isLetter(from.pos() - 1)) {
to = from;
return;
}
// no break here, we go to the next
case WHOLE_WORD:
// If we are already at the beginning of a word, do nothing
if (!from.pos() || !from_par.isLetter(from.pos() - 1))
break;
// no break here, we go to the next
case PREVIOUS_WORD:
// always move the cursor to the beginning of previous word
while (from.pos() && from_par.isLetter(from.pos() - 1))
--from.pos();
break;
case NEXT_WORD:
LYXERR0("Text::getWord: NEXT_WORD not implemented yet");
break;
case PARTIAL_WORD:
// no need to move the 'from' cursor
break;
}
to = from;
Paragraph & to_par = pars_[to.pit()];
while (to.pos() < to_par.size() && to_par.isLetter(to.pos()))
++to.pos();
}
void Text::write(Buffer const & buf, ostream & os) const
{
ParagraphList::const_iterator pit = paragraphs().begin();
ParagraphList::const_iterator end = paragraphs().end();
depth_type dth = 0;
for (; pit != end; ++pit)
pit->write(buf, os, buf.params(), dth);
// Close begin_deeper
for(; dth > 0; --dth)
os << "\n\\end_deeper";
}
bool Text::read(Buffer const & buf, Lexer & lex,
ErrorList & errorList, InsetText * insetPtr)
{
depth_type depth = 0;
while (lex.isOK()) {
lex.nextToken();
string const token = lex.getString();
if (token.empty())
continue;
if (token == "\\end_inset")
break;
if (token == "\\end_body")
continue;
if (token == "\\begin_body")
continue;
if (token == "\\end_document")
return false;
if (token == "\\begin_layout") {
lex.pushToken(token);
Paragraph par;
par.params().depth(depth);
par.setFont(0, Font(inherit_font, buf.params().language));
par.setInsetOwner(insetPtr);
pars_.push_back(par);
// FIXME: goddamn InsetTabular makes us pass a Buffer
// not BufferParams
lyx::readParagraph(buf, pars_.back(), lex, errorList);
} else if (token == "\\begin_deeper") {
++depth;
} else if (token == "\\end_deeper") {
if (!depth)
lex.printError("\\end_deeper: " "depth is already null");
else
--depth;
} else {
LYXERR0("Handling unknown body token: `" << token << '\'');
}
}
return true;
}
// Returns the current font and depth as a message.
docstring Text::currentState(Cursor & cur)
{
BOOST_ASSERT(this == cur.text());
Buffer & buf = cur.buffer();
Paragraph const & par = cur.paragraph();
odocstringstream os;
if (buf.params().trackChanges)
os << _("[Change Tracking] ");
Change change = par.lookupChange(cur.pos());
if (change.type != Change::UNCHANGED) {
Author const & a = buf.params().authors().get(change.author);
os << _("Change: ") << a.name();
if (!a.email().empty())
os << " (" << a.email() << ")";
// FIXME ctime is english, we should translate that
os << _(" at ") << ctime(&change.changetime);
os << " : ";
}
// I think we should only show changes from the default
// font. (Asger)
// No, from the document font (MV)
Font font = cur.real_current_font;
font.fontInfo().reduce(buf.params().getFont().fontInfo());
os << bformat(_("Font: %1$s"), font.stateText(&buf.params()));
// The paragraph depth
int depth = cur.paragraph().getDepth();
if (depth > 0)
os << bformat(_(", Depth: %1$d"), depth);
// The paragraph spacing, but only if different from
// buffer spacing.
Spacing const & spacing = par.params().spacing();
if (!spacing.isDefault()) {
os << _(", Spacing: ");
switch (spacing.getSpace()) {
case Spacing::Single:
os << _("Single");
break;
case Spacing::Onehalf:
os << _("OneHalf");
break;
case Spacing::Double:
os << _("Double");
break;
case Spacing::Other:
os << _("Other (") << from_ascii(spacing.getValueAsString()) << ')';
break;
case Spacing::Default:
// should never happen, do nothing
break;
}
}
#ifdef DEVEL_VERSION
os << _(", Inset: ") << &cur.inset();
os << _(", Paragraph: ") << cur.pit();
os << _(", Id: ") << par.id();
os << _(", Position: ") << cur.pos();
// FIXME: Why is the check for par.size() needed?
// We are called with cur.pos() == par.size() quite often.
if (!par.empty() && cur.pos() < par.size()) {
// Force output of code point, not character
size_t const c = par.getChar(cur.pos());
os << _(", Char: 0x") << hex << c;
}
os << _(", Boundary: ") << cur.boundary();
// Row & row = cur.textRow();
// os << bformat(_(", Row b:%1$d e:%2$d"), row.pos(), row.endpos());
#endif
return os.str();
}
docstring Text::getPossibleLabel(Cursor & cur) const
{
pit_type pit = cur.pit();
LayoutPtr layout = pars_[pit].layout();
docstring text;
docstring par_text = pars_[pit].asString(cur.buffer(), false);
string piece;
// the return string of math matrices might contain linebreaks
par_text = subst(par_text, '\n', '-');
for (int i = 0; i < lyxrc.label_init_length; ++i) {
if (par_text.empty())
break;
docstring head;
par_text = split(par_text, head, ' ');
// Is it legal to use spaces in labels ?
if (i > 0)
text += '-';
text += head;
}
// No need for a prefix if the user said so.
if (lyxrc.label_init_length <= 0)
return text;
// Will contain the label type.
docstring name;
// For section, subsection, etc...
if (layout->latextype == LATEX_PARAGRAPH && pit != 0) {
LayoutPtr const & layout2 = pars_[pit - 1].layout();
if (layout2->latextype != LATEX_PARAGRAPH) {
--pit;
layout = layout2;
}
}
if (layout->latextype != LATEX_PARAGRAPH)
name = from_ascii(layout->latexname());
// for captions, we just take the caption type
Inset * caption_inset = cur.innerInsetOfType(CAPTION_CODE);
if (caption_inset)
name = from_ascii(static_cast<InsetCaption *>(caption_inset)->type());
// If none of the above worked, we'll see if we're inside various
// types of insets and take our abbreviation from them.
if (name.empty()) {
InsetCode const codes[] = {
FLOAT_CODE,
WRAP_CODE,
FOOT_CODE
};
for (unsigned int i = 0; i < (sizeof codes / sizeof codes[0]); ++i) {
Inset * float_inset = cur.innerInsetOfType(codes[i]);
if (float_inset) {
name = float_inset->name();
break;
}
}
}
// Create a correct prefix for prettyref
if (name == "theorem")
name = from_ascii("thm");
else if (name == "Foot")
name = from_ascii("fn");
else if (name == "listing")
name = from_ascii("lst");
if (!name.empty())
text = name.substr(0, 3) + ':' + text;
return text;
}
void Text::charsTranspose(Cursor & cur)
{
BOOST_ASSERT(this == cur.text());
pos_type pos = cur.pos();
// If cursor is at beginning or end of paragraph, do nothing.
if (pos == cur.lastpos() || pos == 0)
return;
Paragraph & par = cur.paragraph();
// Get the positions of the characters to be transposed.
pos_type pos1 = pos - 1;
pos_type pos2 = pos;
// In change tracking mode, ignore deleted characters.
while (pos2 < cur.lastpos() && par.isDeleted(pos2))
++pos2;
if (pos2 == cur.lastpos())
return;
while (pos1 >= 0 && par.isDeleted(pos1))
--pos1;
if (pos1 < 0)
return;
// Don't do anything if one of the "characters" is not regular text.
if (par.isInset(pos1) || par.isInset(pos2))
return;
// Store the characters to be transposed (including font information).
char_type char1 = par.getChar(pos1);
Font const font1 =
par.getFontSettings(cur.buffer().params(), pos1);
char_type char2 = par.getChar(pos2);
Font const font2 =
par.getFontSettings(cur.buffer().params(), pos2);
// And finally, we are ready to perform the transposition.
// Track the changes if Change Tracking is enabled.
bool const trackChanges = cur.buffer().params().trackChanges;
cur.recordUndo();
par.eraseChar(pos2, trackChanges);
par.eraseChar(pos1, trackChanges);
par.insertChar(pos1, char2, font2, trackChanges);
par.insertChar(pos2, char1, font1, trackChanges);
cur.checkBufferStructure();
// After the transposition, move cursor to after the transposition.
setCursor(cur, cur.pit(), pos2);
cur.forwardPos();
}
DocIterator Text::macrocontextPosition() const
{
return macrocontext_position_;
}
void Text::setMacrocontextPosition(DocIterator const & pos)
{
macrocontext_position_ = pos;
}
} // namespace lyx