1 files changed, 46 insertions, 23 deletions

diff --git a/noncore/apps/opie-write/qrichtext.cpp b/noncore/apps/opie-write/qrichtext.cpp
index f040f1e..768da44 100644
--- a/noncore/apps/opie-write/qrichtext.cpp
+++ b/noncore/apps/opie-write/qrichtext.cpp
@@ -168,92 +168,101 @@ QTextDeleteCommand::QTextDeleteCommand( QTextDocument *d, int i, int idx, const
     }
 }
 
 QTextDeleteCommand::QTextDeleteCommand( QTextParagraph *p, int idx, const QMemArray<QTextStringChar> &str )
     : QTextCommand( 0 ), id( -1 ), index( idx ), parag( p ), text( str )
 {
     for ( int i = 0; i < (int)text.size(); ++i ) {
         if ( text[ i ].format() )
             text[ i ].format()->addRef();
     }
 }
 
 QTextDeleteCommand::~QTextDeleteCommand()
 {
     for ( int i = 0; i < (int)text.size(); ++i ) {
         if ( text[ i ].format() )
             text[ i ].format()->removeRef();
     }
     text.resize( 0 );
 }
 
 QTextCursor *QTextDeleteCommand::execute( QTextCursor *c )
 {
     QTextParagraph *s = doc ? doc->paragAt( id ) : parag;
-    if ( !s ) {
+    if ( !s && doc ) {
         owarn << "can't locate parag at " << id << ", last parag: " << doc->lastParagraph()->paragId() << "" << oendl; 
         return 0;
+    } else if ( !doc ) {
+        owarn << "No valid doc" << oendl;
+        return 0;
     }
 
     cursor.setParagraph( s );
     cursor.setIndex( index );
     int len = text.size();
     if ( c )
         *c = cursor;
     if ( doc ) {
         doc->setSelectionStart( QTextDocument::Temp, cursor );
         for ( int i = 0; i < len; ++i )
             cursor.gotoNextLetter();
         doc->setSelectionEnd( QTextDocument::Temp, cursor );
         doc->removeSelectedText( QTextDocument::Temp, &cursor );
         if ( c )
             *c = cursor;
     } else {
         s->remove( index, len );
     }
 
     return c;
 }
 
 QTextCursor *QTextDeleteCommand::unexecute( QTextCursor *c )
 {
     QTextParagraph *s = doc ? doc->paragAt( id ) : parag;
-    if ( !s ) {
+    if ( !s && doc ) {
         owarn << "can't locate parag at " << id << ", last parag: " << doc->lastParagraph()->paragId() << "" << oendl; 
         return 0;
+    } else if ( !doc ) {
+        owarn << "No valid doc" << oendl;
+        return 0;
     }
 
     cursor.setParagraph( s );
     cursor.setIndex( index );
     QString str = QTextString::toString( text );
     cursor.insert( str, TRUE, &text );
     cursor.setParagraph( s );
     cursor.setIndex( index );
     if ( c ) {
         c->setParagraph( s );
         c->setIndex( index );
         for ( int i = 0; i < (int)text.size(); ++i )
             c->gotoNextLetter();
+    } else {
+        owarn << "No valid cursor" << oendl;
+        return 0;
     }
 
     if ( !styleInformation.isEmpty() ) {
         QDataStream styleStream( styleInformation, IO_ReadOnly );
         int num;
         styleStream >> num;
         QTextParagraph *p = s;
         while ( num-- && p ) {
             p->readStyleInformation( styleStream );
             p = p->next();
         }
     }
     s = cursor.paragraph();
     while ( s ) {
         s->format();
         s->setChanged( TRUE );
         if ( s == c->paragraph() )
             break;
         s = s->next();
     }
 
     return &cursor;
 }
 
@@ -1371,66 +1380,77 @@ struct Q_EXPORT QTextDocumentTag {
         wsm = t.wsm;
         format = t.format;
         alignment = t.alignment;
         direction = t.direction;
         liststyle = t.liststyle;
     }
     QTextDocumentTag& operator=(const QTextDocumentTag& t) {
         name = t.name;
         style = t.style;
         anchorHref = t.anchorHref;
         wsm = t.wsm;
         format = t.format;
         alignment = t.alignment;
         direction = t.direction;
         liststyle = t.liststyle;
         return *this;
     }
 
 #if defined(Q_FULL_TEMPLATE_INSTANTIATION)
     bool operator==( const QTextDocumentTag& ) const { return FALSE; }
 #endif
 };
 
 
-#define NEWPAR       do{ if ( !hasNewPar) { \
-                    if ( !textEditMode && curpar && curpar->length()>1 && curpar->at( curpar->length()-2)->c == QChar_linesep ) \
-                        curpar->remove( curpar->length()-2, 1 ); \
-                    curpar = createParagraph( this, curpar, curpar->next() ); styles.append( vec ); vec = 0;} \
-                    hasNewPar = TRUE; \
-                    curpar->rtext = TRUE;  \
-                    curpar->align = curtag.alignment; \
-                    curpar->lstyle = curtag.liststyle; \
-                    curpar->litem = ( curtag.style->displayMode() == QStyleSheetItem::DisplayListItem ); \
-                    curpar->str->setDirection( (QChar::Direction)curtag.direction ); \
-                    space = TRUE; \
-                    delete vec; vec = new QPtrVector<QStyleSheetItem>( (uint)tags.count() + 1); \
-                    int i = 0; \
-                    for ( QValueStack<QTextDocumentTag>::Iterator it = tags.begin(); it != tags.end(); ++it ) \
-                        vec->insert( i++, (*it).style ); \
-                    vec->insert( i, curtag.style ); \
-                    }while(FALSE)
-
+#define NEWPAR do { \
+                   if ( !hasNewPar) { \
+                       if ( !curpar ) { \
+                           owarn << "no current paragraph" << oendl; \
+                           return; \
+                       } \
+                       if ( !textEditMode && curpar && curpar->length()>1 && curpar->at( curpar->length()-2)->c == QChar_linesep ) \
+                           curpar->remove( curpar->length()-2, 1 ); \
+                       curpar = createParagraph( this, curpar, curpar->next() ); styles.append( vec ); \
+                       if ( !curpar ) { \
+                           owarn << "failed in creating a new paragraph" << oendl; \
+                           return; \
+                       } \
+                       vec = 0; \
+                   } \
+                   hasNewPar = TRUE; \
+                   curpar->rtext = TRUE;  \
+                   curpar->align = curtag.alignment; \
+                   curpar->lstyle = curtag.liststyle; \
+                   curpar->litem = ( curtag.style->displayMode() == QStyleSheetItem::DisplayListItem ); \
+                   curpar->str->setDirection( (QChar::Direction)curtag.direction ); \
+                   space = TRUE; \
+                   delete vec; \
+                   vec = new QPtrVector<QStyleSheetItem>( (uint)tags.count() + 1); \
+                   int i = 0; \
+                   for ( QValueStack<QTextDocumentTag>::Iterator it = tags.begin(); it != tags.end(); ++it ) \
+                       vec->insert( i++, (*it).style ); \
+                   vec->insert( i, curtag.style ); \
+               } while ( FALSE )
 
 void QTextDocument::setRichText( const QString &text, const QString &context )
 {
     if ( !context.isEmpty() )
         setContext( context );
     clear();
     fParag = lParag = createParagraph( this );
     oTextValid = TRUE;
     oText = text;
     setRichTextInternal( text );
     fParag->rtext = TRUE;
 }
 
 void QTextDocument::setRichTextInternal( const QString &text, QTextCursor* cursor )
 {
     QTextParagraph* curpar = lParag;
     int pos = 0;
     QValueStack<QTextDocumentTag> tags;
     QTextDocumentTag initag( "", sheet_->item(""), *formatCollection()->defaultFormat() );
     QTextDocumentTag curtag = initag;
     bool space = TRUE;
     bool canMergeLi = FALSE;
 
     bool textEditMode = FALSE;
@@ -1874,50 +1894,53 @@ void QTextDocument::setRichTextInternal( const QString &text, QTextCursor* curso
 
     if ( cursor ) {
          cursor->gotoPreviousLetter();
           cursor->remove();
      }
 
 }
 
 void QTextDocument::setRichTextMarginsInternal( QPtrList< QPtrVector<QStyleSheetItem> >& styles, QTextParagraph* stylesPar )
 {
     // margin and line spacing calculation
     QPtrVector<QStyleSheetItem>* prevStyle = 0;
     QPtrVector<QStyleSheetItem>* curStyle = styles.first();
     QPtrVector<QStyleSheetItem>* nextStyle = styles.next();
     while ( stylesPar ) {
         if ( !curStyle ) {
             stylesPar = stylesPar->next();
             prevStyle = curStyle;
             curStyle = nextStyle;
             nextStyle = styles.next();
             continue;
         }
 
         int i, mar;
-        QStyleSheetItem* mainStyle = curStyle->size() ? (*curStyle)[curStyle->size()-1] : 0;
-        if ( mainStyle && mainStyle->displayMode() == QStyleSheetItem::DisplayListItem )
+        QStyleSheetItem* mainStyle = (*curStyle)[curStyle->size()-1];
+        if ( !mainStyle )
+            return;
+
+        if ( mainStyle->displayMode() == QStyleSheetItem::DisplayListItem )
             stylesPar->setListItem( TRUE );
         int numLists = 0;
         for ( i = 0; i < (int)curStyle->size(); ++i ) {
             if ( (*curStyle)[ i ]->displayMode() == QStyleSheetItem::DisplayBlock
                  && int((*curStyle)[ i ]->listStyle()) != QStyleSheetItem::Undefined )
                 numLists++;
         }
         stylesPar->ldepth = numLists;
         if ( stylesPar->next() && nextStyle ) {
             // also set the depth of the next paragraph, required for the margin calculation
             numLists = 0;
             for ( i = 0; i < (int)nextStyle->size(); ++i ) {
                 if ( (*nextStyle)[ i ]->displayMode() == QStyleSheetItem::DisplayBlock
                      && int((*nextStyle)[ i ]->listStyle()) != QStyleSheetItem::Undefined )
                     numLists++;
             }
             stylesPar->next()->ldepth = numLists;
         }
 
         // do the top margin
         QStyleSheetItem* item = mainStyle;
         int m;
         if (stylesPar->utm > 0 ) {
             m = stylesPar->utm-1;
@@ -5320,49 +5343,49 @@ int QTextFormatterBreakWords::format( QTextDocument *doc, QTextParagraph *parag,
     if ( start == 0 )
         c = &parag->string()->at( 0 );
 
     int i = start;
     QTextLineStart *lineStart = new QTextLineStart( y, y, 0 );
     insertLineStart( parag, 0, lineStart );
     int lastBreak = -1;
     int tmpBaseLine = 0, tmph = 0;
     bool lastWasNonInlineCustom = FALSE;
 
     int align = parag->alignment();
     if ( align == Qt3::AlignAuto && doc && doc->alignment() != Qt3::AlignAuto )
         align = doc->alignment();
 
     align &= Qt3::AlignHorizontal_Mask;
 
     QPainter *painter = QTextFormat::painter();
     int col = 0;
     int ww = 0;
     QChar lastChr;
     for ( ; i < len; ++i, ++col ) {
         if ( c )
             lastChr = c->c;
         // ### next line should not be needed
-        if ( painter )
+        if ( c && painter )
             c->format()->setPainter( painter );
         c = &string->at( i );
         c->rightToLeft = FALSE;
         if ( i > 0 && (x > curLeft || ww == 0) || lastWasNonInlineCustom ) {
             c->lineStart = 0;
         } else {
             c->lineStart = 1;
             firstChar = c;
         }
 
         if ( c->isCustom() && c->customItem()->placement() != QTextCustomItem::PlaceInline )
             lastWasNonInlineCustom = TRUE;
         else
             lastWasNonInlineCustom = FALSE;
 
         if ( c->c.unicode() >= 32 || c->isCustom() ) {
             ww = string->width( i );
         } else if ( c->c == '\t' ) {
             int nx = parag->nextTab( i, x - left ) + left;
             if ( nx < x )
                 ww = w - x;
             else
                 ww = nx - x;
         } else {