* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
+ * \author Alejandro Aguilar Sierra
+ * \author Alfredo Braunstein
* \author André Pönitz
*
* Full author contact details are available in file CREDITS.
#include "funcrequest.h"
#include "iterators.h"
#include "lfuns.h"
+#include "lyxfunc.h" // only for setMessage()
+#include "lyxrc.h"
+#include "lyxrow.h"
#include "lyxtext.h"
#include "paragraph.h"
-#include "lyxrow.h"
#include "insets/updatableinset.h"
#include "insets/insettabular.h"
#include "insets/insettext.h"
+#include "mathed/math_data.h"
+#include "mathed/math_hullinset.h"
+#include "mathed/math_support.h"
+
+#include "support/limited_stack.h"
+#include "frontends/LyXView.h"
+
#include <boost/assert.hpp>
+using std::string;
using std::vector;
using std::endl;
+#ifndef CXX_GLOBAL_CSTD
+using std::isalpha;
+#endif
+using std::min;
+using std::swap;
-std::ostream & operator<<(std::ostream & os, CursorItem const & item)
-{
- os << " inset: " << item.inset_
- << " text: " << item.text()
-// << " par: " << item.par_
-// << " pos: " << item.pos_
- << " x: " << item.inset_->x()
- << " y: " << item.inset_->y()
-;
- return os;
-}
+// our own cut buffer
+limited_stack<string> theCutBuffer;
-LyXText * CursorItem::text() const
-{
- return inset_->getText(0);
-}
+
+LCursor::LCursor(BufferView & bv)
+ : cursor_(1), anchor_(1), bv_(&bv), current_(0),
+ cached_y_(0), x_target_(-1),
+ selection_(false), mark_(false)
+{}
-std::ostream & operator<<(std::ostream & os, LCursor const & cursor)
+void LCursor::reset()
{
- os << "\n";
- for (size_t i = 0, n = cursor.data_.size(); i != n; ++i)
- os << " " << cursor.data_[i] << "\n";
- return os;
+ cursor_.clear();
+ anchor_.clear();
+ cursor_.push_back(CursorSlice());
+ anchor_.push_back(CursorSlice());
+ current_ = 0;
+ cached_y_ = 0;
+ clearTargetX();
+ selection_ = false;
+ mark_ = false;
}
-LCursor::LCursor(BufferView * bv)
- : bv_(bv)
-{}
-
-
DispatchResult LCursor::dispatch(FuncRequest const & cmd0)
{
- lyxerr << "\nLCursor::dispatch: " << *this << endl;
+ //lyxerr << "\nLCursor::dispatch: cmd: " << cmd0 << endl << *this << endl;
FuncRequest cmd = cmd0;
-
- for (int i = data_.size() - 1; i >= 0; --i) {
- CursorItem const & citem = data_[i];
- lyxerr << "trying to dispatch to inset " << citem.inset_ << endl;
- DispatchResult res = citem.inset_->dispatch(cmd);
+ for (current_ = cursor_.size() - 1; current_ >= 1; --current_) {
+ lyxerr << "trying to dispatch to inset " << inset() << endl;
+ DispatchResult res = inset()->dispatch(*this, cmd);
if (res.dispatched()) {
- lyxerr << " successfully dispatched to inset " << citem.inset_ << endl;
+ lyxerr << " successfully dispatched to inset " << inset() << endl;
return DispatchResult(true, true);
}
- // remove one level of cursor
+ // "Mutate" the request for semi-handled requests that need
+ // additional handling in outer levels.
switch (res.val()) {
case FINISHED:
- pop(i);
- cmd = FuncRequest(bv_, LFUN_FINISHED_LEFT);
+ cmd = FuncRequest(LFUN_FINISHED_LEFT);
break;
case FINISHED_RIGHT:
- pop(i);
- cmd = FuncRequest(bv_, LFUN_FINISHED_RIGHT);
+ cmd = FuncRequest(LFUN_FINISHED_RIGHT);
break;
case FINISHED_UP:
- pop(i);
- cmd = FuncRequest(bv_, LFUN_FINISHED_UP);
+ cmd = FuncRequest(LFUN_FINISHED_UP);
break;
case FINISHED_DOWN:
- pop(i);
- cmd = FuncRequest(bv_, LFUN_FINISHED_DOWN);
+ cmd = FuncRequest(LFUN_FINISHED_DOWN);
break;
default:
- lyxerr << "not handled on level " << i << " val: " << res.val() << endl;
+ //lyxerr << "not handled on level " << current_
+ // << " val: " << res.val() << endl;
break;
}
}
- lyxerr << "trying to dispatch to main text " << bv_->text << endl;
- DispatchResult res = bv_->text->dispatch(cmd);
- lyxerr << " result: " << res.val() << endl;
-
- if (!res.dispatched()) {
- lyxerr << "trying to dispatch to bv " << bv_ << endl;
- bool sucess = bv_->dispatch(cmd);
- lyxerr << " result: " << sucess << endl;
- res.dispatched(sucess);
- }
-
+ BOOST_ASSERT(current_ == 0);
+ lyxerr << "trying to dispatch to main text " << bv_->text()
+ << " with cursor: " << *this << endl;
+ DispatchResult res = bv_->text()->dispatch(*this, cmd);
+ //lyxerr << " result: " << res.val() << endl;
return res;
}
-void LCursor::push(UpdatableInset * inset)
+void LCursor::push(InsetBase * inset)
{
lyxerr << "LCursor::push() inset: " << inset << endl;
- data_.push_back(CursorItem(inset));
+ cursor_.push_back(CursorSlice(inset));
+ anchor_.push_back(CursorSlice(inset));
+ ++current_;
updatePos();
}
void LCursor::pop(int depth)
{
- lyxerr << "LCursor::pop() to " << depth << endl;
- while (depth < data_.size()) {
- lyxerr << "LCursor::pop a level " << endl;
- data_.pop_back();
- }
+ while (int(cursor_.size()) > depth + 1)
+ pop();
+ lyxerr << "LCursor::pop() result: " << *this << endl;
}
void LCursor::pop()
{
- lyxerr << "LCursor::pop() " << endl;
- //BOOST_ASSERT(!data_.empty());
- if (data_.empty())
- lyxerr << "### TRYING TO POP FROM EMPTY CURSOR" << endl;
- else
- data_.pop_back();
+ BOOST_ASSERT(cursor_.size() >= 1);
+ cursor_.pop_back();
+ anchor_.pop_back();
+ current_ = cursor_.size() - 1;
+}
+
+
+void LCursor::pushLeft(InsetBase * p)
+{
+ BOOST_ASSERT(!cursor_.empty());
+ //lyxerr << "Entering inset " << t << " left" << endl;
+ push(p);
+ p->idxFirst(*this);
+}
+
+
+bool LCursor::popLeft()
+{
+ BOOST_ASSERT(!cursor_.empty());
+ //lyxerr << "Leaving inset to the left" << endl;
+ if (depth() <= 1) {
+ if (depth() == 1)
+ inset()->notifyCursorLeaves(idx());
+ return false;
+ }
+ inset()->notifyCursorLeaves(idx());
+ pop();
+ return true;
+}
+
+
+bool LCursor::popRight()
+{
+ BOOST_ASSERT(!cursor_.empty());
+ //lyxerr << "Leaving inset to the right" << endl;
+ if (depth() <= 1) {
+ if (depth() == 1)
+ inset()->notifyCursorLeaves(idx());
+ return false;
+ }
+ inset()->notifyCursorLeaves(idx());
+ pop();
+ posRight();
+ return true;
+}
+
+
+CursorSlice & LCursor::current()
+{
+ BOOST_ASSERT(!cursor_.empty());
+ //lyxerr << "accessing cursor slice " << current_
+ // << ": " << cursor_[current_] << endl;
+ return cursor_[current_];
+}
+
+
+CursorSlice const & LCursor::current() const
+{
+ //lyxerr << "accessing cursor slice " << current_
+ // << ": " << cursor_[current_] << endl;
+ return cursor_[current_];
}
-UpdatableInset * LCursor::innerInset() const
+int LCursor::currentMode()
{
- return data_.empty() ? 0 : data_.back().inset_;
+ BOOST_ASSERT(!cursor_.empty());
+ for (int i = cursor_.size() - 1; i >= 1; --i) {
+ int res = cursor_[i].inset()->currentMode();
+ if (res != MathInset::UNDECIDED_MODE)
+ return res;
+ }
+ return MathInset::TEXT_MODE;
}
LyXText * LCursor::innerText() const
{
- if (!data_.empty()) {
+ BOOST_ASSERT(!cursor_.empty());
+ //lyxerr << "LCursor::innerText() depth: " << cursor_.size() << endl;
+ if (cursor_.size() > 1) {
// go up until first non-0 text is hit
- // (innermost text is 0 e.g. for mathed and the outer tabular level)
- for (int i = data_.size() - 1; i >= 0; --i)
- if (data_[i].text())
- return data_[i].text();
+ // (innermost text is 0 in mathed)
+ for (int i = cursor_.size() - 1; i >= 1; --i)
+ if (cursor_[i].text())
+ return cursor_[i].text();
}
- return bv_->text;
+ return bv_->text();
}
-void LCursor::updatePos()
+CursorSlice const & LCursor::innerTextSlice() const
{
- if (!data_.empty())
- cached_y_ = bv_->top_y() + innerInset()->y();
+ BOOST_ASSERT(!cursor_.empty());
+ //lyxerr << "LCursor::innerTextSlice() depth: " << cursor_.size() << endl;
+ if (cursor_.size() > 1) {
+ // go up until first non-0 text is hit
+ // (innermost text is 0 in mathed)
+ for (int i = cursor_.size() - 1; i >= 1; --i)
+ if (cursor_[i].text())
+ return cursor_[i];
+ }
+ return cursor_[0];
}
-void LCursor::getDim(int & asc, int & desc) const
+void LCursor::updatePos()
{
- LyXText * txt = innerText();
+ BOOST_ASSERT(!cursor_.empty());
+ if (cursor_.size() > 1)
+ cached_y_ = bv_->top_y() + cursor_.back().inset()->yo();
+ //cached_y_ = cursor_.back().inset()->yo();
+}
- if (txt) {
- Row const & row = *txt->cursorRow();
- asc = row.baseline();
- desc = row.height() - asc;
- } else
- innerInset()->getCursorDim(asc, desc);
+
+void LCursor::getDim(int & asc, int & des) const
+{
+ BOOST_ASSERT(!cursor_.empty());
+ LyXText * text = innerText();
+#warning crashes with text-in-math
+ if (0 && text) {
+ RowList::iterator const rit = text->cursorRow();
+ if (rit != text->endRow()) {
+ asc = rit->baseline();
+ des = rit->height() - asc;
+ } else {
+ asc = 10;
+ des = 10;
+ }
+ } else {
+ asc = 10;
+ des = 10;
+ //innerInset()->getCursorDim(asc, des);
+ }
}
void LCursor::getPos(int & x, int & y) const
{
- if (data_.empty()) {
- x = bv_->text->cursor.x();
- y = bv_->text->cursor.y();
-// y -= bv_->top_y();
+ BOOST_ASSERT(!cursor_.empty());
+ x = 0;
+ y = 0;
+ if (cursor_.size() <= 1) {
+ x = bv_->text()->cursorX(cursor_.front());
+ y = bv_->text()->cursorY(cursor_.front());
} else {
- // Would be nice to clean this up to make some understandable sense...
- UpdatableInset * inset = innerInset();
- // Non-obvious. The reason we have to have these
- // extra checks is that the ->getCursor() calls rely
+ inset()->getCursorPos(cursor_.back(), x, y);
+ // getCursorPos gives _screen_ coordinates. We need to add
+ // top_y to get document coordinates. This is hidden in cached_y_.
+ //y += cached_y_ - inset()->yo();
+ // The rest is non-obvious. The reason we have to have these
+ // extra computation is that the getCursorPos() calls rely
// on the inset's own knowledge of its screen position.
- // If we scroll up or down in a big enough increment, the
+ // If we scroll up or down in a big enough increment,
// inset->draw() is not called: this doesn't update
- // inset.top_baseline, so getCursor() returns an old value.
+ // inset.yo_, so getCursor() returns an old value.
// Ugly as you like.
- //inset->getCursorPos(bv_, x, y);
- //y = inset->insetInInsetY() + bv_->text->cursor.y();
- inset->getCursorPos(x, y);
- x += inset->x();
- y += cached_y_;
}
+ //lyxerr << "#### LCursor::getPos: " << *this
+ // << " x: " << x << " y: " << y << endl;
+}
+
+
+void LCursor::paste(string const & data)
+{
+ dispatch(FuncRequest(LFUN_PASTE, data));
}
-UpdatableInset * LCursor::innerInsetOfType(int code) const
+InsetBase * LCursor::innerInsetOfType(int code) const
{
- for (int i = data_.size() - 1; i >= 0; --i)
- if (data_[i].inset_->lyxCode() == code)
- return data_[i].inset_;
+ for (int i = cursor_.size() - 1; i >= 1; --i)
+ if (cursor_[i].inset_->lyxCode() == code)
+ return cursor_[i].inset_;
return 0;
}
InsetTabular * LCursor::innerInsetTabular() const
{
- return static_cast<InsetTabular *>
- (innerInsetOfType(InsetOld::TABULAR_CODE));
+ return static_cast<InsetTabular *>(innerInsetOfType(InsetBase::TABULAR_CODE));
+}
+
+
+void LCursor::resetAnchor()
+{
+ anchor_ = cursor_;
+}
+
+
+BufferView & LCursor::bv() const
+{
+ return *bv_;
+}
+
+
+MathAtom const & LCursor::prevAtom() const
+{
+ BOOST_ASSERT(pos() > 0);
+ return cell()[pos() - 1];
+}
+
+
+MathAtom & LCursor::prevAtom()
+{
+ BOOST_ASSERT(pos() > 0);
+ return cell()[pos() - 1];
+}
+
+
+MathAtom const & LCursor::nextAtom() const
+{
+ BOOST_ASSERT(pos() < lastpos());
+ return cell()[pos()];
+}
+
+
+MathAtom & LCursor::nextAtom()
+{
+ BOOST_ASSERT(pos() < lastpos());
+ return cell()[pos()];
+}
+
+
+bool LCursor::posLeft()
+{
+ if (pos() == 0)
+ return false;
+ --pos();
+ return true;
+}
+
+
+bool LCursor::posRight()
+{
+ if (pos() == lastpos())
+ return false;
+ ++pos();
+ return true;
+}
+
+
+CursorSlice & LCursor::anchor()
+{
+ return anchor_.back();
+}
+
+
+CursorSlice const & LCursor::anchor() const
+{
+ return anchor_.back();
+}
+
+
+CursorSlice const & LCursor::selBegin() const
+{
+ if (!selection())
+ return cursor_.back();
+ // can't use std::min as this creates a new object
+ return anchor() < cursor_.back() ? anchor() : cursor_.back();
+}
+
+
+CursorSlice & LCursor::selBegin()
+{
+ if (!selection())
+ return cursor_.back();
+ return anchor() < cursor_.back() ? anchor() : cursor_.back();
+}
+
+
+CursorSlice const & LCursor::selEnd() const
+{
+ if (!selection())
+ return cursor_.back();
+ return anchor() > cursor_.back() ? anchor() : cursor_.back();
+}
+
+
+CursorSlice & LCursor::selEnd()
+{
+ if (selection())
+ return cursor_.back();
+ return anchor() > cursor_.back() ? anchor() : cursor_.back();
+}
+
+
+void LCursor::setSelection()
+{
+ selection() = true;
+ // a selection with no contents is not a selection
+ if (par() == anchor().par() && pos() == anchor().pos())
+ selection() = false;
+}
+
+
+void LCursor::setSelection(CursorBase const & where, size_t n)
+{
+ selection() = true;
+ cursor_ = where;
+ anchor_ = where;
+ pos() += n;
+}
+
+
+void LCursor::clearSelection()
+{
+ selection() = false;
+ mark() = false;
+ resetAnchor();
+ bv().unsetXSel();
+}
+
+
+int & LCursor::x_target()
+{
+ return x_target_;
+}
+
+
+int LCursor::x_target() const
+{
+ return x_target_;
+}
+
+
+void LCursor::clearTargetX()
+{
+ x_target_ = -1;
+}
+
+
+LyXText * LCursor::text() const
+{
+ return current_ ? current().text() : bv_->text();
+}
+
+
+Paragraph & LCursor::paragraph()
+{
+ BOOST_ASSERT(!inMathed());
+ return current_ ? current().paragraph() : *bv_->text()->getPar(par());
+}
+
+
+Paragraph const & LCursor::paragraph() const
+{
+ BOOST_ASSERT(!inMathed());
+ return current_ ? current().paragraph() : *bv_->text()->getPar(par());
+}
+
+
+LCursor::par_type LCursor::lastpar() const
+{
+ return inMathed() ? 0 : text()->paragraphs().size() - 1;
+}
+
+
+LCursor::pos_type LCursor::lastpos() const
+{
+ InsetBase * inset = current().inset();
+ return inset && inset->asMathInset() ? cell().size() : paragraph().size();
+}
+
+
+LCursor::row_type LCursor::crow() const
+{
+ return paragraph().row(pos());
+}
+
+
+LCursor::row_type LCursor::lastcrow() const
+{
+ return paragraph().rows.size();
+}
+
+
+size_t LCursor::nargs() const
+{
+ // assume 1x1 grid for 'plain text'
+ return current_ ? current().nargs() : 1;
+}
+
+
+size_t LCursor::ncols() const
+{
+ // assume 1x1 grid for 'plain text'
+ return current_ ? current().ncols() : 1;
+}
+
+
+size_t LCursor::nrows() const
+{
+ // assume 1x1 grid for 'plain text'
+ return current_ ? current().nrows() : 1;
+}
+
+
+LCursor::row_type LCursor::row() const
+{
+ BOOST_ASSERT(current_ > 0);
+ return current().row();
+}
+
+
+LCursor::col_type LCursor::col() const
+{
+ BOOST_ASSERT(current_ > 0);
+ return current().col();
+}
+
+
+MathArray const & LCursor::cell() const
+{
+ BOOST_ASSERT(current_ > 0);
+ return current().cell();
+}
+
+
+MathArray & LCursor::cell()
+{
+ BOOST_ASSERT(current_ > 0);
+ return current().cell();
+}
+
+
+void LCursor::info(std::ostream & os)
+{
+ for (int i = 1, n = depth(); i < n; ++i) {
+ cursor_[i].inset()->infoize(os);
+ os << " ";
+ }
+ if (pos() != 0)
+ prevInset()->infoize2(os);
+ // overwite old message
+ os << " ";
+}
+
+
+namespace {
+
+void region(CursorSlice const & i1, CursorSlice const & i2,
+ LCursor::row_type & r1, LCursor::row_type & r2,
+ LCursor::col_type & c1, LCursor::col_type & c2)
+{
+ InsetBase * p = i1.inset();
+ c1 = p->col(i1.idx_);
+ c2 = p->col(i2.idx_);
+ if (c1 > c2)
+ swap(c1, c2);
+ r1 = p->row(i1.idx_);
+ r2 = p->row(i2.idx_);
+ if (r1 > r2)
+ swap(r1, r2);
+}
+
+}
+
+
+string LCursor::grabSelection()
+{
+ if (!selection())
+ return string();
+
+ CursorSlice i1 = selBegin();
+ CursorSlice i2 = selEnd();
+
+ if (i1.idx_ == i2.idx_) {
+ if (i1.inset()->asMathInset()) {
+ MathArray::const_iterator it = i1.cell().begin();
+ return asString(MathArray(it + i1.pos_, it + i2.pos_));
+ } else {
+ return "unknown selection 1";
+ }
+ }
+
+ row_type r1, r2;
+ col_type c1, c2;
+ region(i1, i2, r1, r2, c1, c2);
+
+ string data;
+ if (i1.inset()->asMathInset()) {
+ for (row_type row = r1; row <= r2; ++row) {
+ if (row > r1)
+ data += "\\\\";
+ for (col_type col = c1; col <= c2; ++col) {
+ if (col > c1)
+ data += '&';
+ data += asString(i1.asMathInset()->cell(i1.asMathInset()->index(row, col)));
+ }
+ }
+ } else {
+ data = "unknown selection 2";
+ }
+ return data;
+}
+
+
+void LCursor::eraseSelection()
+{
+ CursorSlice i1 = selBegin();
+ CursorSlice i2 = selEnd();
+#warning FIXME
+ if (i1.inset()->asMathInset()) {
+ if (i1.idx_ == i2.idx_) {
+ i1.cell().erase(i1.pos_, i2.pos_);
+ } else {
+ MathInset * p = i1.asMathInset();
+ row_type r1, r2;
+ col_type c1, c2;
+ region(i1, i2, r1, r2, c1, c2);
+ for (row_type row = r1; row <= r2; ++row)
+ for (col_type col = c1; col <= c2; ++col)
+ p->cell(p->index(row, col)).clear();
+ }
+ current() = i1;
+ } else {
+ lyxerr << "can't erase this selection 1" << endl;
+ }
+}
+
+
+string LCursor::grabAndEraseSelection()
+{
+ if (!selection())
+ return string();
+ string res = grabSelection();
+ eraseSelection();
+ selection() = false;
+ return res;
+}
+
+
+void LCursor::selClear()
+{
+ resetAnchor();
+ clearSelection();
+}
+
+
+void LCursor::selCopy()
+{
+ if (selection()) {
+ theCutBuffer.push(grabSelection());
+ selection() = false;
+ } else {
+ //theCutBuffer.erase();
+ }
+}
+
+
+void LCursor::selCut()
+{
+ theCutBuffer.push(grabAndEraseSelection());
+}
+
+
+void LCursor::selDel()
+{
+ if (selection()) {
+ eraseSelection();
+ selection() = false;
+ }
+}
+
+
+void LCursor::selPaste(size_t n)
+{
+ selClearOrDel();
+ if (n < theCutBuffer.size())
+ paste(theCutBuffer[n]);
+ //grabSelection();
+ selection() = false;
+}
+
+
+void LCursor::selHandle(bool sel)
+{
+ if (sel == selection())
+ return;
+ resetAnchor();
+ selection() = sel;
+}
+
+
+void LCursor::selStart()
+{
+ resetAnchor();
+ selection() = true;
+}
+
+
+void LCursor::selClearOrDel()
+{
+ if (lyxrc.auto_region_delete)
+ selDel();
+ else
+ selection() = false;
+}
+
+
+std::ostream & operator<<(std::ostream & os, LCursor const & cur)
+{
+ os << "\n";
+ for (size_t i = 0, n = cur.cursor_.size(); i != n; ++i)
+ os << " (" << cur.cursor_[i] << " | " << cur.anchor_[i] << "\n";
+ return os << "current: " << cur.current_ << endl;
+}
+
+
+
+
+//
+// CursorBase
+//
+
+
+void increment(CursorBase & it)
+{
+ CursorSlice & top = it.back();
+ MathArray & ar = top.asMathInset()->cell(top.idx_);
+
+ // move into the current inset if possible
+ // it is impossible for pos() == size()!
+ MathInset * n = 0;
+ if (top.pos() != top.lastpos())
+ n = (ar.begin() + top.pos_)->nucleus();
+ if (n && n->isActive()) {
+ it.push_back(CursorSlice(n));
+ return;
+ }
+
+ // otherwise move on one cell back if possible
+ if (top.pos() < top.lastpos()) {
+ // pos() == lastpos() is valid!
+ ++top.pos_;
+ return;
+ }
+
+ // otherwise try to move on one cell if possible
+ while (top.idx() < top.lastidx()) {
+ ++top.idx_;
+ if (top.asMathInset()->validCell(top.idx_)) {
+ top.pos_ = 0;
+ return;
+ }
+ }
+
+ // otherwise leave array, move on one back
+ // this might yield pos() == size(), but that's a ok.
+ it.pop_back();
+ // it certainly invalidates top
+ ++it.back().pos_;
+}
+
+
+CursorBase ibegin(InsetBase * p)
+{
+ CursorBase it;
+ it.push_back(CursorSlice(p));
+ return it;
+}
+
+
+CursorBase iend(InsetBase * p)
+{
+ CursorBase it;
+ it.push_back(CursorSlice(p));
+ CursorSlice & cur = it.back();
+ cur.idx() = cur.lastidx();
+ cur.pos() = cur.lastpos();
+ return it;
+}
+
+
+
+
+///////////////////////////////////////////////////////////////////
+//
+// The part below is the non-integrated rest of the original math
+// cursor. This should be either generalized for texted or moved
+// back to the math insets.
+//
+///////////////////////////////////////////////////////////////////
+
+#include "mathed/math_braceinset.h"
+#include "mathed/math_charinset.h"
+#include "mathed/math_commentinset.h"
+#include "mathed/math_factory.h"
+#include "mathed/math_gridinset.h"
+#include "mathed/math_macroarg.h"
+#include "mathed/math_macrotemplate.h"
+#include "mathed/math_mathmlstream.h"
+#include "mathed/math_scriptinset.h"
+#include "mathed/math_spaceinset.h"
+#include "mathed/math_support.h"
+#include "mathed/math_unknowninset.h"
+
+//#define FILEDEBUG 1
+
+
+bool LCursor::isInside(InsetBase const * p)
+{
+ for (unsigned i = 0; i < depth(); ++i)
+ if (cursor_[i].inset() == p)
+ return true;
+ return false;
+}
+
+
+bool LCursor::openable(MathAtom const & t)
+{
+ if (!t->isActive())
+ return false;
+
+ if (t->lock())
+ return false;
+
+ if (!selection())
+ return true;
+
+ // we can't move into anything new during selection
+ if (depth() == anchor_.size())
+ return false;
+ if (t.nucleus() != anchor_[depth()].inset())
+ return false;
+
+ return true;
+}
+
+
+bool LCursor::inNucleus()
+{
+ return inset()->asMathInset()->asScriptInset() && idx() == 2;
+}
+
+
+bool LCursor::left()
+{
+ autocorrect() = false;
+ clearTargetX();
+ if (inMacroMode()) {
+ macroModeClose();
+ return true;
+ }
+
+ if (pos() != 0 && openable(prevAtom())) {
+ posLeft();
+ push(nextAtom().nucleus());
+ inset()->idxLast(*this);
+ return true;
+ }
+
+ return posLeft() || idxLeft() || popLeft() || selection();
+}
+
+
+bool LCursor::right()
+{
+ autocorrect() = false;
+ clearTargetX();
+ if (inMacroMode()) {
+ macroModeClose();
+ return true;
+ }
+
+ if (pos() != lastpos() && openable(nextAtom())) {
+ pushLeft(nextAtom().nucleus());
+ inset()->idxFirst(*this);
+ return true;
+ }
+
+ return posRight() || idxRight() || popRight() || selection();
+}
+
+
+bool positionable(CursorBase const & cursor, CursorBase const & anchor)
+{
+ // avoid deeper nested insets when selecting
+ if (cursor.size() > anchor.size())
+ return false;
+
+ // anchor might be deeper, should have same path then
+ for (size_t i = 0; i < cursor.size(); ++i)
+ if (cursor[i].inset() != anchor[i].inset())
+ return false;
+
+ // position should be ok.
+ return true;
+}
+
+
+void LCursor::setScreenPos(int x, int y)
+{
+ bool res = bruteFind(x, y, formula()->xlow(), formula()->xhigh(),
+ formula()->ylow(), formula()->yhigh());
+ if (!res) {
+ // this can happen on creation of "math-display"
+ idx() = 0;
+ pos() = 0;
+ }
+ clearTargetX();
+}
+
+
+
+bool LCursor::home()
+{
+ autocorrect() = false;
+ macroModeClose();
+ if (!inset()->idxHome(*this))
+ return popLeft();
+ clearTargetX();
+ return true;
+}
+
+
+bool LCursor::end()
+{
+ autocorrect() = false;
+ macroModeClose();
+ if (!inset()->idxEnd(*this))
+ return popRight();
+ clearTargetX();
+ return true;
+}
+
+
+void LCursor::plainErase()
+{
+ cell().erase(pos());
+}
+
+
+void LCursor::markInsert()
+{
+ cell().insert(pos(), MathAtom(new MathCharInset(0)));
+}
+
+
+void LCursor::markErase()
+{
+ cell().erase(pos());
+}
+
+
+void LCursor::plainInsert(MathAtom const & t)
+{
+ cell().insert(pos(), t);
+ ++pos();
+}
+
+
+void LCursor::insert2(string const & str)
+{
+ MathArray ar;
+ asArray(str, ar);
+ insert(ar);
+}
+
+
+void LCursor::insert(string const & str)
+{
+ lyxerr << "inserting '" << str << "'" << endl;
+ selClearOrDel();
+ for (string::const_iterator it = str.begin(); it != str.end(); ++it)
+ plainInsert(MathAtom(new MathCharInset(*it)));
+}
+
+
+void LCursor::insert(char c)
+{
+ lyxerr << "inserting '" << c << "'" << endl;
+ selClearOrDel();
+ plainInsert(MathAtom(new MathCharInset(c)));
+}
+
+
+void LCursor::insert(MathAtom const & t)
+{
+ macroModeClose();
+ selClearOrDel();
+ plainInsert(t);
+}
+
+
+void LCursor::niceInsert(string const & t)
+{
+ lyxerr << "*** LCursor::niceInsert 1: " << t << endl;
+ MathArray ar;
+ asArray(t, ar);
+ if (ar.size() == 1)
+ niceInsert(ar[0]);
+ else
+ insert(ar);
+}
+
+
+void LCursor::niceInsert(MathAtom const & t)
+{
+ lyxerr << "*** LCursor::niceInsert 2: " << t << endl;
+ macroModeClose();
+ string safe = grabAndEraseSelection();
+ plainInsert(t);
+ // enter the new inset and move the contents of the selection if possible
+ if (t->isActive()) {
+ posLeft();
+ pushLeft(nextAtom().nucleus());
+ paste(safe);
+ }
+ lyxerr << "*** LCursor::niceInsert 3: " << t << endl;
+}
+
+
+void LCursor::insert(MathArray const & ar)
+{
+ macroModeClose();
+ if (selection())
+ eraseSelection();
+ cell().insert(pos(), ar);
+ pos() += ar.size();
+}
+
+
+bool LCursor::backspace()
+{
+ autocorrect() = false;
+
+ if (selection()) {
+ selDel();
+ return true;
+ }
+
+ if (pos() == 0) {
+ if (inset()->nargs() == 1 && depth() == 1 && lastpos() == 0)
+ return false;
+ pullArg();
+ return true;
+ }
+
+ if (inMacroMode()) {
+ MathUnknownInset * p = activeMacro();
+ if (p->name().size() > 1) {
+ p->setName(p->name().substr(0, p->name().size() - 1));
+ return true;
+ }
+ }
+
+ if (pos() != 0 && prevAtom()->nargs() > 0) {
+ // let's require two backspaces for 'big stuff' and
+ // highlight on the first
+ selection() = true;
+ left();
+ } else {
+ --pos();
+ plainErase();
+ }
+ return true;
+}
+
+
+bool LCursor::erase()
+{
+ autocorrect() = false;
+ if (inMacroMode())
+ return true;
+
+ if (selection()) {
+ selDel();
+ return true;
+ }
+
+ // delete empty cells if possible
+ if (pos() == lastpos() && inset()->idxDelete(idx()))
+ return true;
+
+ // special behaviour when in last position of cell
+ if (pos() == lastpos()) {
+ bool one_cell = inset()->nargs() == 1;
+ if (one_cell && depth() == 1 && lastpos() == 0)
+ return false;
+ // remove markup
+ if (one_cell)
+ pullArg();
+ else
+ inset()->idxGlue(idx());
+ return true;
+ }
+
+ if (pos() != lastpos() && inset()->nargs() > 0) {
+ selection() = true;
+ right();
+ } else {
+ plainErase();
+ }
+
+ return true;
+}
+
+
+bool LCursor::up()
+{
+ macroModeClose();
+ CursorBase save = cursor_;
+ if (goUpDown(true))
+ return true;
+ cursor_ = save;
+ autocorrect() = false;
+ return selection();
+}
+
+
+bool LCursor::down()
+{
+ macroModeClose();
+ CursorBase save = cursor_;
+ if (goUpDown(false))
+ return true;
+ cursor_ = save;
+ autocorrect() = false;
+ return selection();
+}
+
+
+void LCursor::macroModeClose()
+{
+ if (!inMacroMode())
+ return;
+ MathUnknownInset * p = activeMacro();
+ p->finalize();
+ string s = p->name();
+ --pos();
+ cell().erase(pos());
+
+ // do nothing if the macro name is empty
+ if (s == "\\")
+ return;
+
+ string const name = s.substr(1);
+
+ // prevent entering of recursive macros
+ if (formula()->lyxCode() == InsetOld::MATHMACRO_CODE
+ && formula()->getInsetName() == name)
+ lyxerr << "can't enter recursive macro" << endl;
+
+ niceInsert(createMathInset(name));
+}
+
+
+string LCursor::macroName()
+{
+ return inMacroMode() ? activeMacro()->name() : string();
+}
+
+
+void LCursor::handleNest(MathAtom const & a, int c)
+{
+ MathAtom t = a;
+ asArray(grabAndEraseSelection(), t.nucleus()->cell(c));
+ insert(t);
+ posLeft();
+ pushLeft(t.nucleus());
+}
+
+
+int LCursor::targetX() const
+{
+ if (x_target() != -1)
+ return x_target();
+ int x = 0;
+ int y = 0;
+ getPos(x, y);
+ return x;
+}
+
+
+MathHullInset * LCursor::formula() const
+{
+ for (int i = cursor_.size() - 1; i >= 1; --i)
+ if (cursor_[i].inset()->lyxCode() == InsetBase::MATH_CODE)
+ return static_cast<MathHullInset *>(cursor_[i].inset());
+ return 0;
+}
+
+
+void LCursor::adjust(pos_type from, int diff)
+{
+ if (pos() > from)
+ pos() += diff;
+ if (anchor().pos_ > from)
+ anchor().pos_ += diff;
+ // just to be on the safe side
+ // theoretically unecessary
+ normalize();
+}
+
+
+bool LCursor::inMacroMode() const
+{
+ if (!pos() != 0)
+ return false;
+ MathUnknownInset const * p = prevAtom()->asUnknownInset();
+ return p && !p->final();
+}
+
+
+MathUnknownInset * LCursor::activeMacro()
+{
+ return inMacroMode() ? prevAtom().nucleus()->asUnknownInset() : 0;
+}
+
+
+bool LCursor::inMacroArgMode() const
+{
+ return pos() > 0 && prevAtom()->getChar() == '#';
+}
+
+
+MathGridInset * LCursor::enclosingGrid(idx_type & idx) const
+{
+ for (MathInset::difference_type i = depth() - 1; i >= 0; --i) {
+ MathInset * m = cursor_[i].inset()->asMathInset();
+ if (!m)
+ return 0;
+ MathGridInset * p = m->asGridInset();
+ if (p) {
+ idx = cursor_[i].idx_;
+ return p;
+ }
+ }
+ return 0;
+}
+
+
+void LCursor::pullArg()
+{
+#warning look here
+#if 0
+ MathArray ar = cell();
+ if (popLeft()) {
+ plainErase();
+ cell().insert(pos(), ar);
+ resetAnchor();
+ } else {
+ formula()->mutateToText();
+ }
+#endif
+}
+
+
+void LCursor::touch()
+{
+#warning look here
+#if 0
+ CursorBase::const_iterator it = cursor_.begin();
+ CursorBase::const_iterator et = cursor_.end();
+ for ( ; it != et; ++it)
+ it->cell().touch();
+#endif
+}
+
+
+void LCursor::normalize()
+{
+ if (idx() >= nargs()) {
+ lyxerr << "this should not really happen - 1: "
+ << idx() << ' ' << nargs()
+ << " in: " << inset() << endl;
+ }
+ idx() = min(idx(), lastidx());
+
+ if (pos() > lastpos()) {
+ lyxerr << "this should not really happen - 2: "
+ << pos() << ' ' << lastpos() << " in idx: " << idx()
+ << " in atom: '";
+ WriteStream wi(lyxerr, false, true);
+ inset()->asMathInset()->write(wi);
+ lyxerr << endl;
+ }
+ pos() = min(pos(), lastpos());
+}
+
+
+char LCursor::valign()
+{
+ idx_type idx;
+ MathGridInset * p = enclosingGrid(idx);
+ return p ? p->valign() : '\0';
+}
+
+
+char LCursor::halign()
+{
+ idx_type idx;
+ MathGridInset * p = enclosingGrid(idx);
+ return p ? p->halign(idx % p->ncols()) : '\0';
+}
+
+
+bool LCursor::goUpDown(bool up)
+{
+ // Be warned: The 'logic' implemented in this function is highly fragile.
+ // A distance of one pixel or a '<' vs '<=' _really_ matters.
+ // So fiddle around with it only if you know what you are doing!
+ int xo = 0;
+ int yo = 0;
+ getPos(xo, yo);
+
+ // check if we had something else in mind, if not, this is the future goal
+ if (x_target() == -1)
+ x_target() = xo;
+ else
+ xo = x_target();
+
+ // try neigbouring script insets
+ if (!selection()) {
+ // try left
+ if (pos() != 0) {
+ MathScriptInset const * p = prevAtom()->asScriptInset();
+ if (p && p->has(up)) {
+ --pos();
+ push(inset());
+ idx() = up; // the superscript has index 1
+ pos() = lastpos();
+ //lyxerr << "updown: handled by scriptinset to the left" << endl;
+ return true;
+ }
+ }
+
+ // try right
+ if (pos() != lastpos()) {
+ MathScriptInset const * p = nextAtom()->asScriptInset();
+ if (p && p->has(up)) {
+ push(inset());
+ idx() = up;
+ pos() = 0;
+ //lyxerr << "updown: handled by scriptinset to the right" << endl;
+ return true;
+ }
+ }
+ }
+
+ // try current cell for e.g. text insets
+ if (inset()->idxUpDown2(*this, up))
+ return true;
+
+ //xarray().boundingBox(xlow, xhigh, ylow, yhigh);
+ //if (up)
+ // yhigh = yo - 4;
+ //else
+ // ylow = yo + 4;
+ //if (bruteFind(xo, yo, xlow, xhigh, ylow, yhigh)) {
+ // lyxerr << "updown: handled by brute find in the same cell" << endl;
+ // return true;
+ //}
+
+ // try to find an inset that knows better then we
+ while (1) {
+ //lyxerr << "updown: We are in " << inset() << " idx: " << idx() << endl;
+ // ask inset first
+ if (inset()->idxUpDown(*this, up)) {
+ // try to find best position within this inset
+ if (!selection())
+ bruteFind2(xo, yo);
+ return true;
+ }
+
+ // no such inset found, just take something "above"
+ //lyxerr << "updown: handled by strange case" << endl;
+ if (!popLeft()) {
+ return
+ bruteFind(xo, yo,
+ formula()->xlow(),
+ formula()->xhigh(),
+ up ? formula()->ylow() : yo + 4,
+ up ? yo - 4 : formula()->yhigh()
+ );
+ }
+
+ // any improvement so far?
+ int xnew, ynew;
+ getPos(xnew, ynew);
+ if (up ? ynew < yo : ynew > yo)
+ return true;
+ }
+}
+
+
+bool LCursor::bruteFind(int x, int y, int xlow, int xhigh, int ylow, int yhigh)
+{
+ CursorBase best_cursor;
+ double best_dist = 1e10;
+
+ CursorBase it = ibegin(formula());
+ CursorBase et = iend(formula());
+ while (1) {
+ // avoid invalid nesting when selecting
+ if (!selection() || positionable(it, anchor_)) {
+ int xo, yo;
+ CursorSlice & cur = it.back();
+ cur.inset()->getCursorPos(cur, xo, yo);
+ if (xlow <= xo && xo <= xhigh && ylow <= yo && yo <= yhigh) {
+ double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
+ //lyxerr << "x: " << x << " y: " << y << " d: " << endl;
+ // '<=' in order to take the last possible position
+ // this is important for clicking behind \sum in e.g. '\sum_i a'
+ if (d <= best_dist) {
+ best_dist = d;
+ best_cursor = it;
+ }
+ }
+ }
+
+ if (it == et)
+ break;
+ increment(it);
+ }
+
+ if (best_dist < 1e10)
+ cursor_ = best_cursor;
+ return best_dist < 1e10;
+}
+
+
+void LCursor::bruteFind2(int x, int y)
+{
+ double best_dist = 1e10;
+
+ CursorBase it = cursor_;
+ it.back().pos(0);
+ CursorBase et = cursor_;
+ int n = et.back().asMathInset()->cell(et.back().idx_).size();
+ et.back().pos(n);
+ for (int i = 0; ; ++i) {
+ int xo, yo;
+ CursorSlice & cur = it.back();
+ cur.inset()->getCursorPos(cur, xo, yo);
+ double d = (x - xo) * (x - xo) + (y - yo) * (y - yo);
+ // '<=' in order to take the last possible position
+ // this is important for clicking behind \sum in e.g. '\sum_i a'
+ lyxerr << "i: " << i << " d: " << d << " best: " << best_dist << endl;
+ if (d <= best_dist) {
+ best_dist = d;
+ cursor_ = it;
+ }
+ if (it == et)
+ break;
+ increment(it);
+ }
+}
+
+
+bool LCursor::idxLineLast()
+{
+ idx() -= idx() % ncols();
+ idx() += ncols() - 1;
+ pos() = lastpos();
+ return true;
+}
+
+
+bool LCursor::idxLeft()
+{
+ return inset()->idxLeft(*this);
+}
+
+
+bool LCursor::idxRight()
+{
+ return inset()->idxRight(*this);
+}
+
+
+bool LCursor::script(bool up)
+{
+ // Hack to get \\^ and \\_ working
+ lyxerr << "handling script: up: " << up << endl;
+ if (inMacroMode() && macroName() == "\\") {
+ if (up)
+ niceInsert(createMathInset("mathcircumflex"));
+ else
+ interpret('_');
+ return true;
+ }
+
+ macroModeClose();
+ string safe = grabAndEraseSelection();
+ if (inNucleus()) {
+ // we are in a nucleus of a script inset, move to _our_ script
+ inset()->asMathInset()->asScriptInset()->ensure(up);
+ idx() = up;
+ pos() = 0;
+ } else if (pos() != 0 && prevAtom()->asScriptInset()) {
+ --pos();
+ nextAtom().nucleus()->asScriptInset()->ensure(up);
+ push(nextInset());
+ idx() = up;
+ pos() = lastpos();
+ } else if (pos() != 0) {
+ --pos();
+ cell()[pos()] = MathAtom(new MathScriptInset(nextAtom(), up));
+ push(nextInset());
+ idx() = up;
+ pos() = 0;
+ } else {
+ plainInsert(MathAtom(new MathScriptInset(up)));
+ --pos();
+ nextAtom().nucleus()->asScriptInset()->ensure(up);
+ push(nextInset());
+ idx() = up;
+ pos() = 0;
+ }
+ paste(safe);
+ return true;
+}
+
+
+bool LCursor::interpret(char c)
+{
+ //lyxerr << "interpret 2: '" << c << "'" << endl;
+ clearTargetX();
+ if (inMacroArgMode()) {
+ posLeft();
+ plainErase();
+#warning FIXME
+#if 0
+ int n = c - '0';
+ MathMacroTemplate const * p = formula()->asMacroTemplate();
+ if (p && 1 <= n && n <= p->numargs())
+ insert(MathAtom(new MathMacroArgument(c - '0')));
+ else {
+ insert(createMathInset("#"));
+ interpret(c); // try again
+ }
+#endif
+ return true;
+ }
+
+ // handle macroMode
+ if (inMacroMode()) {
+ string name = macroName();
+ //lyxerr << "interpret name: '" << name << "'" << endl;
+
+ if (isalpha(c)) {
+ activeMacro()->setName(activeMacro()->name() + c);
+ return true;
+ }
+
+ // handle 'special char' macros
+ if (name == "\\") {
+ // remove the '\\'
+ backspace();
+ if (c == '\\') {
+ if (currentMode() == MathInset::TEXT_MODE)
+ niceInsert(createMathInset("textbackslash"));
+ else
+ niceInsert(createMathInset("backslash"));
+ } else if (c == '{') {
+ niceInsert(MathAtom(new MathBraceInset));
+ } else {
+ niceInsert(createMathInset(string(1, c)));
+ }
+ return true;
+ }
+
+ // leave macro mode and try again if necessary
+ macroModeClose();
+ if (c == '{')
+ niceInsert(MathAtom(new MathBraceInset));
+ else if (c != ' ')
+ interpret(c);
+ return true;
+ }
+
+ // This is annoying as one has to press <space> far too often.
+ // Disable it.
+
+ if (0) {
+ // leave autocorrect mode if necessary
+ if (autocorrect() && c == ' ') {
+ autocorrect() = false;
+ return true;
+ }
+ }
+
+ // just clear selection on pressing the space bar
+ if (selection() && c == ' ') {
+ selection() = false;
+ return true;
+ }
+
+ selClearOrDel();
+
+ if (c == '\\') {
+ //lyxerr << "starting with macro" << endl;
+ insert(MathAtom(new MathUnknownInset("\\", false)));
+ return true;
+ }
+
+ if (c == '\n') {
+ if (currentMode() == MathInset::TEXT_MODE)
+ insert(c);
+ return true;
+ }
+
+ if (c == ' ') {
+ if (currentMode() == MathInset::TEXT_MODE) {
+ // insert spaces in text mode,
+ // but suppress direct insertion of two spaces in a row
+ // the still allows typing '<space>a<space>' and deleting the 'a', but
+ // it is better than nothing...
+ if (!pos() != 0 || prevAtom()->getChar() != ' ')
+ insert(c);
+ return true;
+ }
+ if (pos() != 0 && prevAtom()->asSpaceInset()) {
+ prevAtom().nucleus()->asSpaceInset()->incSpace();
+ return true;
+ }
+ if (popRight())
+ return true;
+ // if are at the very end, leave the formula
+ return pos() != lastpos();
+ }
+
+ if (c == '_') {
+ script(false);
+ return true;
+ }
+
+ if (c == '^') {
+ script(true);
+ return true;
+ }
+
+ if (c == '{' || c == '}' || c == '#' || c == '&' || c == '$') {
+ niceInsert(createMathInset(string(1, c)));
+ return true;
+ }
+
+ if (c == '%') {
+ niceInsert(MathAtom(new MathCommentInset));
+ return true;
+ }
+
+ // try auto-correction
+ //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
+ // return true;
+
+ // no special circumstances, so insert the character without any fuss
+ insert(c);
+ autocorrect() = true;
+ return true;
+}
+
+
+void LCursor::lockToggle()
+{
+ if (pos() != lastpos()) {
+ // toggle previous inset ...
+ nextAtom().nucleus()->lock(!nextAtom()->lock());
+ } else if (popLeft() && pos() != lastpos()) {
+ // ... or enclosing inset if we are in the last inset position
+ nextAtom().nucleus()->lock(!nextAtom()->lock());
+ posRight();
+ }
+}
+
+
+CursorSlice LCursor::normalAnchor()
+{
+ if (anchor_.size() < depth()) {
+ resetAnchor();
+ lyxerr << "unusual Anchor size" << endl;
+ }
+ //lyx::BOOST_ASSERT(Anchor_.size() >= cursor.depth());
+ // use Anchor on the same level as Cursor
+ CursorSlice normal = anchor_[current_];
+#if 0
+ if (depth() < anchor_.size() && !(normal < xx())) {
+ // anchor is behind cursor -> move anchor behind the inset
+ ++normal.pos_;
+ }
+#endif
+ return normal;
+}
+
+
+/*
+DispatchResult dispatch(LCursor & cur, FuncRequest const & cmd)
+{
+ // mouse clicks are somewhat special
+ // check
+ switch (cmd.action) {
+ case LFUN_MOUSE_PRESS:
+ case LFUN_MOUSE_MOTION:
+ case LFUN_MOUSE_RELEASE:
+ case LFUN_MOUSE_DOUBLE: {
+ CursorSlice & pos = cursor_.back();
+ int x = 0;
+ int y = 0;
+ getPos(x, y);
+ if (x < cmd.x && pos() != 0) {
+ DispatchResult const res = prevAtom().nucleus()->dispatch(cmd);
+ if (res.dispatched())
+ return res;
+ }
+ if (x > cmd.x && pos() != lastpos()) {
+ DispatchResult const res = inset()->dispatch(cmd);
+ if (res.dispatched())
+ return res;
+ }
+ }
+ default:
+ break;
+ }
+}
+*/
+
+
+void LCursor::handleFont(string const & font)
+{
+ string safe;
+ if (selection()) {
+ macroModeClose();
+ safe = grabAndEraseSelection();
+ }
+
+ if (lastpos() != 0) {
+ // something left in the cell
+ if (pos() == 0) {
+ // cursor in first position
+ popLeft();
+ } else if (pos() == lastpos()) {
+ // cursor in last position
+ popRight();
+ } else {
+ // cursor in between. split cell
+ MathArray::iterator bt = cell().begin();
+ MathAtom at = createMathInset(font);
+ at.nucleus()->cell(0) = MathArray(bt, bt + pos());
+ cell().erase(bt, bt + pos());
+ popLeft();
+ plainInsert(at);
+ }
+ } else {
+ // nothing left in the cell
+ pullArg();
+ plainErase();
+ }
+ insert(safe);
+}
+
+
+void LCursor::releaseMathCursor()
+{
+ if (inMathed())
+ formula()->insetUnlock(bv());
+}
+
+
+bool LCursor::inMathed() const
+{
+ return formula();
+}
+
+
+InsetBase * LCursor::nextInset()
+{
+ if (pos() == lastpos())
+ return 0;
+ if (inMathed())
+ return nextAtom().nucleus();
+ Paragraph & par = paragraph();
+ return par.isInset(pos()) ? par.getInset(pos()) : 0;
+}
+
+
+InsetBase * LCursor::prevInset()
+{
+ if (pos() == 0)
+ return 0;
+ if (inMathed())
+ return prevAtom().nucleus();
+ Paragraph & par = paragraph();
+ return par.isInset(pos() - 1) ? par.getInset(pos() - 1) : 0;
+}
+
+
+void LCursor::message(string const & msg) const
+{
+ bv().owner()->getLyXFunc().setMessage(msg);
+}
+
+
+void LCursor::errorMessage(string const & msg) const
+{
+ bv().owner()->getLyXFunc().setErrorMessage(msg);
}
projects / lyx.git / blobdiff