Prevent crash when m_defGridAttr is NULL

[wxWidgets.git] / src / generic / listctrl.cpp

diff --git a/src/generic/listctrl.cpp b/src/generic/listctrl.cpp
index d3725573758f3dab06210750b771ea59f876c848..9f32c43da4a62f9874dc4951df0b30b68383a783 100644 (file)
--- a/src/generic/listctrl.cpp
+++ b/src/generic/listctrl.cpp
@@ -502,6 +502,7 @@ private:
     wxString           *m_res;
     wxListMainWindow   *m_owner;
     wxString            m_startValue;
+    bool                m_finished;
 
 public:
     wxListTextCtrl() {}
@@ -2139,6 +2140,7 @@ wxListTextCtrl::wxListTextCtrl( wxWindow *parent,
     (*m_accept) = FALSE;
     (*m_res) = "";
     m_startValue = value;
+    m_finished = FALSE;
 }
 
 void wxListTextCtrl::OnChar( wxKeyEvent &event )
@@ -2151,9 +2153,12 @@ void wxListTextCtrl::OnChar( wxKeyEvent &event )
         if (!wxPendingDelete.Member(this))
             wxPendingDelete.Append(this);
 
-        if ((*m_accept) && ((*m_res) != m_startValue))
+        if ((*m_res) != m_startValue)
             m_owner->OnRenameAccept();
 
+        m_finished = TRUE;
+        m_owner->SetFocus(); // This doesn't work. TODO.
+
         return;
     }
     if (event.m_keyCode == WXK_ESCAPE)
@@ -2164,6 +2169,9 @@ void wxListTextCtrl::OnChar( wxKeyEvent &event )
         if (!wxPendingDelete.Member(this))
             wxPendingDelete.Append(this);
 
+        m_finished = TRUE;
+        m_owner->SetFocus(); // This doesn't work. TODO.
+
         return;
     }
 
@@ -2172,12 +2180,18 @@ void wxListTextCtrl::OnChar( wxKeyEvent &event )
 
 void wxListTextCtrl::OnKeyUp( wxKeyEvent &event )
 {
+    if (m_finished)
+    {
+        event.Skip();
+        return;
+    }
+
     // auto-grow the textctrl:
     wxSize parentSize = m_owner->GetSize();
     wxPoint myPos = GetPosition();
     wxSize mySize = GetSize();
     int sx, sy;
-    GetTextExtent(GetValue() + _T("MM"), &sx, &sy); // FIXME: MM??
+    GetTextExtent(GetValue() + _T("M"), &sx, &sy); // FIXME: MM??
     if (myPos.x + sx > parentSize.x)
         sx = parentSize.x - myPos.x;
     if (mySize.x > sx)
@@ -2187,12 +2201,21 @@ void wxListTextCtrl::OnKeyUp( wxKeyEvent &event )
     event.Skip();
 }
 
-void wxListTextCtrl::OnKillFocus( wxFocusEvent &WXUNUSED(event) )
+void wxListTextCtrl::OnKillFocus( wxFocusEvent &event )
 {
+    if (m_finished)
+    {
+        event.Skip();
+        return;
+    }
+
     if (!wxPendingDelete.Member(this))
         wxPendingDelete.Append(this);
 
-    if ((*m_accept) && ((*m_res) != m_startValue))
+    (*m_accept) = TRUE;
+    (*m_res) = GetValue();
+    
+    if ((*m_res) != m_startValue)
         m_owner->OnRenameAccept();
 }
 
@@ -3897,10 +3920,26 @@ void wxListMainWindow::RecalculatePositions(bool noRefresh)
     else
         iconSpacing = 0;
 
+    // Note that we do not call GetClientSize() here but
+    // GetSize() and substract the border size for sunken
+    // borders manually. This is technically incorrect,
+    // but we need to know the client area's size WITHOUT
+    // scrollbars here. Since we don't know if there are
+    // any scrollbars, we use GetSize() instead. Another
+    // solution would be to call SetScrollbars() here to
+    // remove the scrollbars and call GetClientSize() then,
+    // but this might result in flicker and - worse - will
+    // reset the scrollbars to 0 which is not good at all
+    // if you resize a dialog/window, but don't want to
+    // reset the window scrolling. RR.
+    // Furthermore, we actually do NOT subtract the border
+    // width as 2 pixels is just the extra space which we
+    // need around the actual content in the window. Other-
+    // wise the text would e.g. touch the upper border. RR.
     int clientWidth,
         clientHeight;
-    GetClientSize( &clientWidth, &clientHeight );
-
+    GetSize( &clientWidth, &clientHeight );
+    
     if ( HasFlag(wxLC_REPORT) )
     {
         // all lines have the same height
@@ -3929,13 +3968,26 @@ void wxListMainWindow::RecalculatePositions(bool noRefresh)
         // fit into the window, we recalculate after subtracting an
         // approximated 15 pt for the horizontal scrollbar
 
-        clientHeight -= 4;  // sunken frame
-
         int entireWidth = 0;
 
         for (int tries = 0; tries < 2; tries++)
         {
-            entireWidth = 0;
+            // We start with 4 for the border around all items
+            entireWidth = 4;
+                
+            if (tries == 1)
+            {
+                // Now we have decided that the items do not fit into the
+                // client area. Unfortunately, wxWindows sometimes thinks
+                // that it does fit and therefore NO horizontal scrollbar
+                // is inserted. This looks ugly, so we fudge here and make
+                // the calculated width bigger than was actually has been
+                // calculated. This ensures that wxScrolledWindows puts
+                // a scrollbar at the bottom of its client area.
+                entireWidth += SCROLL_UNIT_X;
+            }
+            
+            // Start at 2,2 so the text does not touch the border
             int x = 2;
             int y = 2;
             int maxWidth = 0;
@@ -3948,7 +4000,7 @@ void wxListMainWindow::RecalculatePositions(bool noRefresh)
                 currentlyVisibleLines++;
                 wxListLineData *line = GetLine(i);
                 line->CalculateSize( &dc, iconSpacing );
-                line->SetPosition( x, y, clientWidth, iconSpacing );
+                line->SetPosition( x, y, clientWidth, iconSpacing );  // Why clientWidth? (FIXME)
 
                 wxSize sizeLine = GetLineSize(i);
 
@@ -3959,8 +4011,8 @@ void wxListMainWindow::RecalculatePositions(bool noRefresh)
                 if (currentlyVisibleLines > m_linesPerPage)
                     m_linesPerPage = currentlyVisibleLines;
 
-                // assume that the size of the next one is the same... (FIXME)
-                if ( y + sizeLine.y - 6 >= clientHeight )
+                // Assume that the size of the next one is the same... (FIXME)
+                if ( y + sizeLine.y >= clientHeight )
                 {
                     currentlyVisibleLines = 0;
                     y = 2;
@@ -3968,17 +4020,21 @@ void wxListMainWindow::RecalculatePositions(bool noRefresh)
                     entireWidth += maxWidth+6;
                     maxWidth = 0;
                 }
+                
+                // We have reached the last item.
                 if ( i == count - 1 )
                     entireWidth += maxWidth;
-                if ((tries == 0) && (entireWidth > clientWidth))
+                    
+                if ( (tries == 0) && (entireWidth+SCROLL_UNIT_X > clientWidth) )
                 {
-                    clientHeight -= 15; // scrollbar height
+                    clientHeight -= 15; // We guess the scrollbar height. (FIXME)
                     m_linesPerPage = 0;
                     currentlyVisibleLines = 0;
                     break;
                 }
+                
                 if ( i == count - 1 )
-                    tries = 1;  // everything fits, no second try required
+                    tries = 1;  // Everything fits, no second try required.
             }
         }