* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
- * \author Jürgen Vigna
+ * \author Alejandro Aguilar Sierra
+ * \author Alfredo Braunstein
+ * \author André Pönitz
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
-#include "buffer.h"
#include "BufferView.h"
+#include "buffer.h"
#include "cursor.h"
#include "debug.h"
+#include "dispatchresult.h"
+#include "encoding.h"
+#include "funcrequest.h"
#include "iterators.h"
+#include "language.h"
+#include "lfuns.h"
+#include "lyxfont.h"
+#include "lyxfunc.h" // only for setMessage()
+#include "lyxrc.h"
+#include "lyxrow.h"
#include "lyxtext.h"
#include "paragraph.h"
+#include "paragraph_funcs.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 "support/std_sstream.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;
+
+
+
+// our own cut buffer
+limited_stack<string> theCutBuffer;
+
+
+LCursor::LCursor(BufferView & bv)
+ : DocumentIterator(), bv_(&bv), anchor_(),
+ cached_y_(0), x_target_(-1), selection_(false), mark_(false)
+{}
+
+
+void LCursor::reset()
+{
+ clear();
+ push_back(CursorSlice());
+ anchor_.clear();
+ anchor_.push_back(CursorSlice());
+ cached_y_ = 0;
+ clearTargetX();
+ selection_ = false;
+ mark_ = false;
+}
+
+
+void LCursor::setCursor(DocumentIterator const & cur, bool sel)
+{
+ // this (intentionally) does not touch the anchor
+ DocumentIterator::operator=(cur);
+ selection() = sel;
+}
+
+
+DispatchResult LCursor::dispatch(FuncRequest const & cmd0)
+{
+ if (empty())
+ return DispatchResult();
+
+ //lyxerr << "\nLCursor::dispatch: cmd: " << cmd0 << endl << *this << endl;
+ FuncRequest cmd = cmd0;
+ nopop_ = false;
+ LCursor safe = *this;
+
+ for ( ; size(); pop()) {
+ lyxerr << "\nLCursor::dispatch: cmd: " << cmd0 << endl << *this << endl;
+ BOOST_ASSERT(pos() <= lastpos());
+ BOOST_ASSERT(idx() <= lastidx());
+ BOOST_ASSERT(par() <= lastpar());
+
+ // The common case is 'LFUN handled, need update', so make the
+ // LFUN handler's life easier by assuming this as default value.
+ // The handler can reset the update and val flags if necessary.
+ disp_.update(true);
+ disp_.dispatched(true);
+ inset().dispatch(*this, cmd);
+ if (disp_.dispatched())
+ break;
+ }
+ // it completely to get a 'bomb early' behaviour in case this
+ // object will be used again.
+ if (nopop_ || !disp_.dispatched())
+ operator=(safe);
+ return disp_;
+}
+
+
+bool LCursor::getStatus(FuncRequest const & cmd, FuncStatus & status)
+{
+ LCursor safe = *this;
+ for ( ; size(); pop()) {
+ //lyxerr << "\nLCursor::getStatus: cmd: " << cmd << endl << *this << endl;
+ BOOST_ASSERT(pos() <= lastpos());
+ BOOST_ASSERT(idx() <= lastidx());
+ BOOST_ASSERT(par() <= lastpar());
+
+ // The inset's getStatus() will return 'true' if it made
+ // a definitive decision on whether it want to handle the
+ // request or not. The result of this decision is put into
+ // the 'status' parameter.
+ if (inset().getStatus(*this, cmd, status))
+ break;
+ }
+ operator=(safe);
+ return true;
+}
+
+
+BufferView & LCursor::bv() const
+{
+ return *bv_;
+}
+
+
+void LCursor::pop()
+{
+ BOOST_ASSERT(size() >= 1);
+ pop_back();
+ anchor_.pop_back();
+}
+
+
+void LCursor::push(InsetBase & p)
+{
+ push_back(CursorSlice(p));
+}
+
+
+void LCursor::pushLeft(InsetBase & p)
+{
+ BOOST_ASSERT(!empty());
+ //lyxerr << "Entering inset " << t << " left" << endl;
+ push(p);
+ p.idxFirst(*this);
+}
+
+
+bool LCursor::popLeft()
+{
+ BOOST_ASSERT(!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(!empty());
+ //lyxerr << "Leaving inset to the right" << endl;
+ if (depth() <= 1) {
+ if (depth() == 1)
+ inset().notifyCursorLeaves(idx());
+ return false;
+ }
+ inset().notifyCursorLeaves(idx());
+ pop();
+ ++pos();
+ return true;
+}
+
+
+int LCursor::currentMode()
+{
+ BOOST_ASSERT(!empty());
+ for (int i = size() - 1; i >= 1; --i) {
+ int res = operator[](i).inset().currentMode();
+ if (res != MathInset::UNDECIDED_MODE)
+ return res;
+ }
+ return MathInset::TEXT_MODE;
+}
+
+
+void LCursor::updatePos()
+{
+ BOOST_ASSERT(!empty());
+ if (size() > 1)
+ cached_y_ = bv().top_y() + back().inset().yo();
+ //cached_y_ = back().inset().yo();
+}
+
+
+void LCursor::getDim(int & asc, int & des) const
+{
+ if (inMathed()) {
+ BOOST_ASSERT(inset().asMathInset());
+ //inset().asMathInset()->getCursorDim(asc, des);
+ asc = 10;
+ des = 10;
+ } else if (inTexted()) {
+ Row const & row = textRow();
+ asc = row.baseline();
+ des = row.height() - asc;
+ } else {
+ lyxerr << "should this happen?" << endl;
+ asc = 10;
+ des = 10;
+ }
+}
+
+
+void LCursor::getPos(int & x, int & y) const
+{
+ x = 0;
+ y = 0;
+ if (!empty())
+ inset().getCursorPos(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,
+ // inset->draw() is not called: this doesn't update
+ // inset.yo_, so getCursor() returns an old value.
+ // Ugly as you like.
+}
+
+
+void LCursor::paste(string const & data)
+{
+ dispatch(FuncRequest(LFUN_PASTE, data));
+}
+
+
+void LCursor::resetAnchor()
+{
+ anchor_ = *this;
+}
+
+
+
+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 back();
+ return anchor() < back() ? anchor() : back();
+}
+
+
+CursorSlice & LCursor::selBegin()
+{
+ if (!selection())
+ return back();
+ // can't use std::min as this returns a const ref
+ return anchor() < back() ? anchor() : back();
+}
+
+
+CursorSlice const & LCursor::selEnd() const
+{
+ if (!selection())
+ return back();
+ return anchor() > back() ? anchor() : back();
+}
+
+
+CursorSlice & LCursor::selEnd()
+{
+ if (!selection())
+ return back();
+ // can't use std::min as this returns a const ref
+ return anchor() > back() ? anchor() : back();
+}
-dispatch_result Cursor::dispatch(FuncRequest const &)
+void LCursor::setSelection()
{
- for (int i = data_.size() - 1; i >= 0; --i) {
- lyxerr << "trying to dispatch to " << data_[i].text_ << std::endl;
+ selection() = true;
+ // a selection with no contents is not a selection
+ if (par() == anchor().par() && pos() == anchor().pos())
+ selection() = false;
+}
+
+
+void LCursor::setSelection(DocumentIterator const & where, size_t n)
+{
+ selection() = true;
+ setCursor(where, false);
+ 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;
+}
+
+
+
+void LCursor::info(std::ostream & os) const
+{
+ for (int i = 1, n = depth(); i < n; ++i) {
+ operator[](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()
+{
+ //lyxerr << "LCursor::eraseSelection" << endl;
+ CursorSlice const & i1 = selBegin();
+ CursorSlice const & 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();
+ }
+ back() = i1;
+ } else {
+ lyxerr << "can't erase this selection 1" << endl;
+ }
+ //lyxerr << "LCursor::eraseSelection end" << 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();
}
- return UNDISPATCHED;
}
-void buildCursor(Cursor & cursor, BufferView & bv)
+void LCursor::selCut()
+{
+ theCutBuffer.push(grabAndEraseSelection());
+}
+
+
+void LCursor::selDel()
{
- UpdatableInset * inset = bv.theLockingInset();
- lyxerr << "\nbuildCursor: " << inset << std::endl;
- if (!inset)
+ //lyxerr << "LCursor::selDel" << endl;
+ 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)
+{
+ //lyxerr << "LCursor::selHandle" << endl;
+ if (sel == selection())
return;
-
- inset = inset->getLockingInset();
-
- bool ok = false;
- ParIterator pit = bv.buffer()->par_iterator_begin();
- ParIterator end = bv.buffer()->par_iterator_end();
- for ( ; pit != end && !ok; ++pit) {
- InsetList::iterator it = pit->insetlist.begin();
- InsetList::iterator iend = pit->insetlist.end();
- for ( ; it != iend && !ok; ++it)
- if (it->inset == inset || it->inset == inset->owner())
- ok = true;
- }
-
- if (!ok) {
- lyxerr << " tli not found! inset: " << inset << std::endl;
+ resetAnchor();
+ selection() = sel;
+}
+
+
+void LCursor::selClearOrDel()
+{
+ //lyxerr << "LCursor::selClearOrDel" << endl;
+ if (lyxrc.auto_region_delete)
+ selDel();
+ else
+ selection() = false;
+}
+
+
+std::ostream & operator<<(std::ostream & os, LCursor const & cur)
+{
+ for (size_t i = 0, n = cur.size(); i != n; ++i)
+ os << " " << cur.operator[](i) << " | " << cur.anchor_[i] << "\n";
+ os << " selection: " << cur.selection_ << endl;
+ return os;
+}
+
+
+
+
+///////////////////////////////////////////////////////////////////
+//
+// The part below is the non-integrated rest of the original math
+// cursor. This should be either generalized for texted or moved
+// back to mathed (in most cases to MathNestInset).
+//
+///////////////////////////////////////////////////////////////////
+
+#include "mathed/math_charinset.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_support.h"
+#include "mathed/math_unknowninset.h"
+
+//#define FILEDEBUG 1
+
+
+bool LCursor::isInside(InsetBase const * p)
+{
+ for (unsigned i = 0; i < depth(); ++i)
+ if (&operator[](i).inset() == p)
+ return true;
+ return false;
+}
+
+
+bool LCursor::openable(MathAtom const & t) const
+{
+ 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 (!ptr_cmp(t.nucleus(), &anchor_[depth()].inset()))
+ return false;
+
+ return true;
+}
+
+
+bool positionable(DocumentIterator const & cursor,
+ DocumentIterator 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();
+}
+
+
+
+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::insert(string const & str)
+{
+ lyxerr << "LCursor::insert str '" << str << "'" << endl;
+ for (string::const_iterator it = str.begin(); it != str.end(); ++it)
+ insert(*it);
+}
+
+
+void LCursor::insert(char c)
+{
+ //lyxerr << "LCursor::insert char '" << c << "'" << endl;
+ BOOST_ASSERT(!empty());
+ if (inMathed()) {
+ selClearOrDel();
+ plainInsert(MathAtom(new MathCharInset(c)));
+ } else {
+ text()->insertChar(*this, c);
+ }
+}
+
+
+void LCursor::insert(MathAtom const & t)
+{
+ //lyxerr << "LCursor::insert MathAtom: " << endl;
+ macroModeClose();
+ selClearOrDel();
+ plainInsert(t);
+}
+
+
+void LCursor::insert(InsetBase * inset)
+{
+ if (inMathed())
+ insert(MathAtom(inset));
+ else
+ text()->insertInset(*this, inset);
+}
+
+
+void LCursor::niceInsert(string const & t)
+{
+ MathArray ar;
+ asArray(t, ar);
+ if (ar.size() == 1)
+ niceInsert(ar[0]);
+ else
+ insert(ar);
+}
+
+
+void LCursor::niceInsert(MathAtom const & t)
+{
+ macroModeClose();
+ string safe = grabAndEraseSelection();
+ plainInsert(t);
+ // enter the new inset and move the contents of the selection if possible
+ if (t->isActive()) {
+ posLeft();
+ // be careful here: don't use 'pushLeft(t)' as this we need to
+ // push the clone, not the original
+ pushLeft(*nextInset());
+ paste(safe);
+ }
+}
+
+
+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;
+ --pos();
+ } 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;
+ ++pos();
+ } else {
+ plainErase();
+ }
+
+ return true;
+}
+
+
+bool LCursor::up()
+{
+ macroModeClose();
+ DocumentIterator save = *this;
+ if (goUpDown(true))
+ return true;
+ setCursor(save, false);
+ autocorrect() = false;
+ return selection();
+}
+
+
+bool LCursor::down()
+{
+ macroModeClose();
+ DocumentIterator save = *this;
+ if (goUpDown(false))
+ return true;
+ setCursor(save, false);
+ 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
+ InsetBase const * macro = innerInsetOfType(InsetBase::MATHMACRO_CODE);
+ if (macro && macro->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)
+{
+ //lyxerr << "LCursor::handleNest: " << c << endl;
+ MathAtom t = a;
+ asArray(grabAndEraseSelection(), t.nucleus()->cell(c));
+ insert(t);
+ posLeft();
+ pushLeft(*nextInset());
+}
+
+
+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 = size() - 1; i >= 1; --i) {
+ MathInset * inset = operator[](i).inset().asMathInset();
+ if (inset && inset->asHullInset())
+ return static_cast<MathHullInset *>(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 = operator[](i).inset().asMathInset();
+ if (!m)
+ return 0;
+ MathGridInset * p = m->asGridInset();
+ if (p) {
+ idx = operator[](i).idx_;
+ return p;
+ }
+ }
+ return 0;
+}
- vector<ParagraphList::iterator> pits;
- vector<ParagraphList const *> plists;
- vector<LyXText *> texts;
-/*
- pit.getPits(pits, plists, texts);
-
- cursor.data_.resize(pits.size());
- for (size_t i = 0, n = pits.size(); i != n; ++i) {
- cursor.data_[i].text_ = texts[i];
- cursor.data_[i].pit_ = pits[i];
- //cursor.data_[i].pos_ = texts[i]->cursor.pos();
- cursor.data_[i].pos_ = 0;
- lyxerr << " text: " << cursor.data_[i].text_
- << " pit: " << cursor.data_[i].pit_->id()
- << " pos: " << cursor.data_[i].pos_
- << std::endl;
- }
-*/
+
+void LCursor::pullArg()
+{
+#warning Look here
+ MathArray ar = cell();
+ if (popLeft() && inMathed()) {
+ plainErase();
+ cell().insert(pos(), ar);
+ resetAnchor();
+ } else {
+ //formula()->mutateToText();
+ }
+}
+
+
+void LCursor::touch()
+{
+#warning look here
+#if 0
+ DocumentIterator::const_iterator it = begin();
+ DocumentIterator::const_iterator et = 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 think 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)
+{
+ DocumentIterator best_cursor;
+ double best_dist = 1e10;
+
+ DocumentIterator it = insetBegin(bv().buffer()->inset());
+ DocumentIterator et = insetEnd();
+ 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;
+ it.forwardPos();
+ }
+
+ if (best_dist < 1e10)
+ setCursor(best_cursor, false);
+ return best_dist < 1e10;
+}
+
+
+void LCursor::bruteFind2(int x, int y)
+{
+ double best_dist = 1e10;
+
+ DocumentIterator it = *this;
+ it.back().pos() = 0;
+ DocumentIterator et = *this;
+ et.back().pos() = et.back().asMathInset()->cell(et.back().idx_).size();
+ 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;
+ setCursor(it, false);
+ }
+ if (it == et)
+ break;
+ it.forwardPos();
+ }
+}
+
+
+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_[size() - 1];
+#if 0
+ if (depth() < anchor_.size() && !(normal < xx())) {
+ // anchor is behind cursor -> move anchor behind the inset
+ ++normal.pos_;
+ }
+#endif
+ return normal;
+}
+
+
+void LCursor::handleFont(string const & font)
+{
+ lyxerr << "LCursor::handleFont: " << font << endl;
+ 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::message(string const & msg) const
+{
+ bv().owner()->getLyXFunc().setMessage(msg);
+}
+
+
+void LCursor::errorMessage(string const & msg) const
+{
+ bv().owner()->getLyXFunc().setErrorMessage(msg);
+}
+
+
+string LCursor::selectionAsString(bool label) const
+{
+ if (!selection())
+ return string();
+
+ if (inTexted()) {
+ Buffer const & buffer = *bv().buffer();
+
+ // should be const ...
+ ParagraphList::iterator startpit = text()->getPar(selBegin());
+ ParagraphList::iterator endpit = text()->getPar(selEnd());
+ size_t const startpos = selBegin().pos();
+ size_t const endpos = selEnd().pos();
+
+ if (startpit == endpit)
+ return startpit->asString(buffer, startpos, endpos, label);
+
+ // First paragraph in selection
+ string result =
+ startpit->asString(buffer, startpos, startpit->size(), label) + "\n\n";
+
+ // The paragraphs in between (if any)
+ ParagraphList::iterator pit = startpit;
+ for (++pit; pit != endpit; ++pit)
+ result += pit->asString(buffer, 0, pit->size(), label) + "\n\n";
+
+ // Last paragraph in selection
+ result += endpit->asString(buffer, 0, endpos, label);
+
+ return result;
+ }
+
+#warning and mathed?
+ return string();
+}
+
+
+string LCursor::currentState()
+{
+ if (inMathed()) {
+ std::ostringstream os;
+ info(os);
+ return os.str();
+ }
+
+ if (inTexted())
+ return text()->currentState(*this);
+
+ return string();
+}
+
+
+// only used by the spellchecker
+void LCursor::replaceWord(string const & replacestring)
+{
+ LyXText * t = text();
+ BOOST_ASSERT(t);
+
+ t->replaceSelectionWithString(*this, replacestring);
+ t->setSelectionRange(*this, replacestring.length());
+
+ // Go back so that replacement string is also spellchecked
+ for (string::size_type i = 0; i < replacestring.length() + 1; ++i)
+ t->cursorLeft(*this);
+}
+
+
+void LCursor::update()
+{
+ bv().update();
+}
+
+
+string LCursor::getPossibleLabel()
+{
+ return inMathed() ? "eq:" : text()->getPossibleLabel(*this);
+}
+
+
+Encoding const * LCursor::getEncoding() const
+{
+ if (empty())
+ return 0;
+ if (!bv().buffer())
+ return 0;
+ int s = 0;
+ // go up until first non-0 text is hit
+ // (innermost text is 0 in mathed)
+ for (s = size() - 1; s >= 0; --s)
+ if (operator[](s).text())
+ break;
+ CursorSlice const & sl = operator[](s);
+ LyXText & text = *sl.text();
+ ParagraphList::iterator pit = text.getPar(sl.par());
+ LyXFont font = pit->getFont(
+ bv().buffer()->params(), sl.pos(), outerFont(pit, text.paragraphs()));
+ return font.language()->encoding();
+}
+
+
+void LCursor::undispatched()
+{
+ disp_.dispatched(false);
+}
+
+
+void LCursor::noUpdate()
+{
+ disp_.update(false);
}
projects / lyx.git / blobdiff