]> git.lyx.org Git - lyx.git/blobdiff - src/BufferView2.C
Michael's latest batch of new gnome files.
[lyx.git] / src / BufferView2.C
index 0eb2b4611c5383658a03560990f4ed5e7af8a4cc..ad4d36297c9b9d22efcd04972b1a2a0f9ddec25a 100644 (file)
@@ -34,9 +34,9 @@
 #include "support/filetools.h"
 #include "support/lyxfunctional.h" //equal_1st_in_pair
 #include "support/types.h"
+#include "support/lyxalgo.h" // lyx_count
 
 #include <fstream>
-#include <algorithm>
 
 extern BufferList bufferlist;
 
@@ -47,7 +47,6 @@ using std::endl;
 using std::ifstream;
 using std::vector;
 using std::find;
-using std::count;
 using std::count_if;
 
 
@@ -108,20 +107,84 @@ bool BufferView::insertLyXFile(string const & filen)
 
 bool BufferView::removeAutoInsets()
 {
-       LyXCursor tmpcursor = text->cursor;
-       Paragraph * cur_par = tmpcursor.par();
-       pos_type cur_pos = tmpcursor.pos();
-       
+       Paragraph * cur_par = text->cursor.par();
+       Paragraph * cur_par_prev = cur_par ? cur_par->previous() : 0;
+       Paragraph * cur_par_next = cur_par ? cur_par->next() : 0;
+       pos_type cur_pos = text->cursor.pos();
+
        bool found = false;
 
+       // Trap the deletion of the paragraph the cursor is in.
+       // Iterate until we find a paragraph that won't be immediately deleted.
+       // In reality this should mean we only execute the body of the while
+       // loop once at most.  However for safety we iterate rather than just
+       // make this an if() conditional.
+       while ((cur_par_prev || cur_par_next)
+              && text->setCursor(this,
+                                 cur_par_prev ? cur_par_prev : cur_par_next,
+                                 0)) {
+               // We just removed cur_par so have to fix the "cursor"
+               if (cur_par_prev) {
+                       // '.' = cur_par
+                       //  a -> a.
+                       // .
+                       cur_par = cur_par_prev;
+                       cur_pos = cur_par->size();
+               } else {
+                       // .  -> .a
+                       //  a
+                       cur_par = cur_par_next;
+                       cur_pos = 0;
+               }
+               cur_par_prev = cur_par->previous();
+               cur_par_next = cur_par->next();
+       }
+
        ParIterator it = buffer()->par_iterator_begin();
        ParIterator end = buffer()->par_iterator_end();
        for (; it != end; ++it) {
                Paragraph * par = *it;
+               Paragraph * par_prev = par ? par->previous() : 0;
                bool removed = false;
 
-               text->setCursor(this, par, 0);
-               
+               if (text->setCursor(this, par, 0)
+                   && cur_par == par_prev) {
+                       // The previous setCursor line was deleted and that
+                       // was the cur_par line.  This can only happen if an
+                       // error box was the sole item on cur_par.
+                       // It is possible for cur_par_prev to be stray if
+                       // the line it pointed to only had a error box on it
+                       // so we have to set it to a known correct value.
+                       // This is often the same value it already had.
+                       cur_par_prev = par->previous();
+                       if (cur_par_prev) {
+                               // '|' = par, '.' = cur_par, 'E' = error box
+                               // First step below may occur before while{}
+                               //  a    |a      a     a     a.
+                               //  E -> .E -> |.E -> .  -> |b
+                               // .      b      b    |b
+                               //  b
+                               cur_par = cur_par_prev;
+                               cur_pos = cur_par_prev->size();
+                               cur_par_prev = cur_par->previous();
+                               // cur_par_next remains the same 
+                       } else if (cur_par_next) {
+                               // First step below may occur before while{}
+                               // .
+                               //  E -> |.E -> |.  -> . -> .|a
+                               //  a      a      a    |a
+                               cur_par = cur_par_next;
+                               cur_pos = 0;
+                               // cur_par_prev remains unset
+                               cur_par_next = cur_par->next();
+                       } else {
+                               // I can't find a way to trigger this
+                               // so it should be unreachable code
+                               // unless the buffer is corrupted.
+                               lyxerr << "BufferView::removeAutoInsets() is bad\n";
+                       }
+               }
+
                Paragraph::inset_iterator pit = par->inset_iterator_begin();
                Paragraph::inset_iterator pend = par->inset_iterator_end();
                while (pit != pend) {
@@ -144,6 +207,20 @@ bool BufferView::removeAutoInsets()
                }
        }
 
+       // It is possible that the last line is empty if it was cur_par and/or
+       // only had an error inset on it.
+       if (text->setCursor(this, text->ownerParagraph(), 0)
+           && 0 == cur_par_next) {
+               cur_par = cur_par_prev;
+               cur_pos = cur_par->size();
+       } else if (cur_pos > cur_par->size()) {
+               // Some C-Enter lines were removed by the setCursor call which
+               // then invalidated cur_pos. It could still be "wrong" because
+               // the cursor may appear to have jumped but since we collapsed
+               // some C-Enter lines this should be a reasonable compromise.
+               cur_pos = cur_par->size();
+       }
+
        text->setCursorIntern(this, cur_par, cur_pos);
 
        return found;
@@ -174,7 +251,7 @@ void BufferView::insertErrors(TeXErrors & terr)
                Paragraph * texrowpar = 0;
 
                if (tmpid == -1) {
-                       texrowpar = text->firstParagraph();
+                       texrowpar = text->ownerParagraph();
                        tmppos = 0;
                } else {
                        texrowpar = buffer()->getParFromID(tmpid);
@@ -203,7 +280,7 @@ void BufferView::setCursorFromRow(int row)
        Paragraph * texrowpar;
 
        if (tmpid == -1) {
-               texrowpar = text->firstParagraph();
+               texrowpar = text->ownerParagraph();
                tmppos = 0;
        } else {
                texrowpar = buffer()->getParFromID(tmpid);
@@ -590,10 +667,8 @@ bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 {
        // Check if the label 'from' appears more than once
        vector<string> labels = buffer()->getLabelList();
-       // count is broken on some systems, so use the HP version
-       int res;
-       count(labels.begin(), labels.end(), from, res);
-       if (res > 1)
+
+       if (lyx::count(labels.begin(), labels.end(), from) > 1)
                return false;
 
        return ChangeInsets(Inset::REF_CODE, from, to);