[patch] enlarge global cursor

[Andre Poenitz]

This makes room for another cursor slice at the bottom of the global
cursor which will contain the main LyXText's cursor in the end.

Andre'

-- 
Those who desire to give up Freedom in order to gain Security, will not have,
nor do they deserve, either one.     (T. Jefferson or B. Franklin or both...)

Index: cursor.C
===================================================================
RCS file: /usr/local/lyx/cvsroot/lyx-devel/src/cursor.C,v
retrieving revision 1.30
diff -u -p -r1.30 cursor.C
--- cursor.C    8 Jan 2004 18:30:11 -0000       1.30
+++ cursor.C    13 Jan 2004 11:05:19 -0000
@@ -42,7 +42,7 @@ std::ostream & operator<<(std::ostream &
 
 
 LCursor::LCursor(BufferView * bv)
-       : bv_(bv)
+       : data_(1), bv_(bv)
 {}
 
 
@@ -51,7 +51,7 @@ DispatchResult LCursor::dispatch(FuncReq
        lyxerr << "\nLCursor::dispatch: " << *this << endl;
        FuncRequest cmd = cmd0;
 
-       for (int i = data_.size() - 1; i >= 0; --i) {
+       for (int i = data_.size() - 1; i >= 1; --i) {
                CursorSlice const & citem = data_[i];
                lyxerr << "trying to dispatch to inset " << citem.inset_ << endl;
                DispatchResult res = citem.inset_->dispatch(cmd);
@@ -119,7 +119,7 @@ void LCursor::pop()
 {
        lyxerr << "LCursor::pop() " << endl;
        //BOOST_ASSERT(!data_.empty());
-       if (data_.empty())
+       if (data_.size() <= 1)
                lyxerr << "### TRYING TO POP FROM EMPTY CURSOR" << endl;
        else
                data_.pop_back();
@@ -128,16 +128,16 @@ void LCursor::pop()
 
 UpdatableInset * LCursor::innerInset() const
 {
-       return data_.empty() ? 0 : data_.back().asUpdatableInset();
+       return data_.size() <= 1 ? 0 : data_.back().asUpdatableInset();
 }
 
 
 LyXText * LCursor::innerText() const
 {
-       if (!data_.empty()) {
+       if (data_.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)
+               for (int i = data_.size() - 1; i >= 1; --i)
                        if (data_[i].text())
                                return data_[i].text();
        }
@@ -147,7 +147,7 @@ LyXText * LCursor::innerText() const
 
 void LCursor::updatePos()
 {
-       if (!data_.empty())
+       if (data_.size() > 1)
                cached_y_ = bv_->top_y() + innerInset()->y();
 }
 
@@ -167,7 +167,7 @@ void LCursor::getDim(int & asc, int & de
 
 void LCursor::getPos(int & x, int & y) const
 {
-       if (data_.empty()) {
+       if (data_.size() <= 1) {
                x = bv_->text()->cursorX();
                y = bv_->text()->cursorY();
 //             y -= bv_->top_y();
@@ -190,7 +190,7 @@ void LCursor::getPos(int & x, int & y) c
 
 UpdatableInset * LCursor::innerInsetOfType(int code) const
 {
-       for (int i = data_.size() - 1; i >= 0; --i)
+       for (int i = data_.size() - 1; i >= 1; --i)
                if (data_[i].asUpdatableInset()->lyxCode() == code)
                        return data_[i].asUpdatableInset();
        return 0;
@@ -206,22 +206,13 @@ InsetTabular * LCursor::innerInsetTabula
 
 void LCursor::cell(int idx)
 {
-#if 0
        BOOST_ASSERT(!data_.empty());
        data_.back().idx_ = idx;
-#else
-       if (!data_.empty())
-               data_.back().idx_ = idx;
-#endif
 }
 
 
 int LCursor::cell() const
 {
-#if 0
        BOOST_ASSERT(!data_.empty());
        return data_.back().idx_;
-#else
-       return data_.empty() ? 0 : data_.back().idx_;
-#endif
 }