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don't crash trying to dereference NULL m_selection (happens when showing a grid without any rows or columns)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15891 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2002-06-20 15:01:10 +00:00
parent bd9cd5343b
commit 3f3dc2efd0
1 changed files with 178 additions and 105 deletions
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283
src/generic/grid.cpp
View File

@@ -3604,7 +3604,8 @@ void wxGrid::Create()
// create the type registry // create the type registry
m_typeRegistry = new wxGridTypeRegistry; m_typeRegistry = new wxGridTypeRegistry;
m_selection = 0; m_selection = NULL;
// subwindow components that make up the wxGrid // subwindow components that make up the wxGrid
m_cornerLabelWin = new wxGridCornerLabelWindow( this, m_cornerLabelWin = new wxGridCornerLabelWindow( this,
-1, -1,
@@ -3670,9 +3671,9 @@ bool wxGrid::SetTable( wxGridTableBase *table, bool takeOwnership,
if ( m_created ) if ( m_created )
{ {
// RD: Actually, this should probably be allowed. I think it would be // RD: Actually, this should probably be allowed. I think it would be
// nice to be able to switch multiple Tables in and out of a single // nice to be able to switch multiple Tables in and out of a single
// View at runtime. Is there anything in the implmentation that would // View at runtime. Is there anything in the implementation that
// prevent this? // would prevent this?
// At least, you now have to cope with m_selection // At least, you now have to cope with m_selection
wxFAIL_MSG( wxT("wxGrid::CreateGrid or wxGrid::SetTable called more than once") ); wxFAIL_MSG( wxT("wxGrid::CreateGrid or wxGrid::SetTable called more than once") );
@@ -3977,7 +3978,9 @@ bool wxGrid::Redimension( wxGridTableMessage& msg )
// //
SetCurrentCell( 0, 0 ); SetCurrentCell( 0, 0 );
} }
m_selection->UpdateRows( pos, numRows );
if ( m_selection )
m_selection->UpdateRows( pos, numRows );
wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider(); wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider();
if (attrProvider) if (attrProvider)
attrProvider->UpdateAttrRows( pos, numRows ); attrProvider->UpdateAttrRows( pos, numRows );
@@ -4060,7 +4063,9 @@ bool wxGrid::Redimension( wxGridTableMessage& msg )
if ( m_currentCellCoords.GetRow() >= m_numRows ) if ( m_currentCellCoords.GetRow() >= m_numRows )
m_currentCellCoords.Set( 0, 0 ); m_currentCellCoords.Set( 0, 0 );
} }
m_selection->UpdateRows( pos, -((int)numRows) );
if ( m_selection )
m_selection->UpdateRows( pos, -((int)numRows) );
wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider(); wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider();
if (attrProvider) { if (attrProvider) {
attrProvider->UpdateAttrRows( pos, -((int)numRows) ); attrProvider->UpdateAttrRows( pos, -((int)numRows) );
@@ -4114,7 +4119,9 @@ bool wxGrid::Redimension( wxGridTableMessage& msg )
// //
SetCurrentCell( 0, 0 ); SetCurrentCell( 0, 0 );
} }
m_selection->UpdateCols( pos, numCols );
if ( m_selection )
m_selection->UpdateCols( pos, numCols );
wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider(); wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider();
if (attrProvider) if (attrProvider)
attrProvider->UpdateAttrCols( pos, numCols ); attrProvider->UpdateAttrCols( pos, numCols );
@@ -4196,7 +4203,9 @@ bool wxGrid::Redimension( wxGridTableMessage& msg )
if ( m_currentCellCoords.GetCol() >= m_numCols ) if ( m_currentCellCoords.GetCol() >= m_numCols )
m_currentCellCoords.Set( 0, 0 ); m_currentCellCoords.Set( 0, 0 );
} }
m_selection->UpdateCols( pos, -((int)numCols) );
if ( m_selection )
m_selection->UpdateCols( pos, -((int)numCols) );
wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider(); wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider();
if (attrProvider) { if (attrProvider) {
attrProvider->UpdateAttrCols( pos, -((int)numCols) ); attrProvider->UpdateAttrCols( pos, -((int)numCols) );
@@ -4431,11 +4440,14 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
case WXGRID_CURSOR_SELECT_ROW: case WXGRID_CURSOR_SELECT_ROW:
if ( (row = YToRow( y )) >= 0 ) if ( (row = YToRow( y )) >= 0 )
{ {
m_selection->SelectRow( row, if ( m_selection )
event.ControlDown(), {
event.ShiftDown(), m_selection->SelectRow( row,
event.AltDown(), event.ControlDown(),
event.MetaDown() ); event.ShiftDown(),
event.AltDown(),
event.MetaDown() );
}
} }
// default label to suppress warnings about "enumeration value // default label to suppress warnings about "enumeration value
@@ -4480,21 +4492,29 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
{ {
if ( !event.ShiftDown() && !event.ControlDown() ) if ( !event.ShiftDown() && !event.ControlDown() )
ClearSelection(); ClearSelection();
if ( event.ShiftDown() ) else if ( m_selection )
m_selection->SelectBlock( m_currentCellCoords.GetRow(), {
0, if ( event.ShiftDown() )
row, {
GetNumberCols() - 1, m_selection->SelectBlock( m_currentCellCoords.GetRow(),
event.ControlDown(), 0,
event.ShiftDown(), row,
event.AltDown(), GetNumberCols() - 1,
event.MetaDown() ); event.ControlDown(),
else event.ShiftDown(),
m_selection->SelectRow( row, event.AltDown(),
event.ControlDown(), event.MetaDown() );
event.ShiftDown(), }
event.AltDown(), else
event.MetaDown() ); {
m_selection->SelectRow( row,
event.ControlDown(),
event.ShiftDown(),
event.AltDown(),
event.MetaDown() );
}
}
ChangeCursorMode(WXGRID_CURSOR_SELECT_ROW, m_rowLabelWin); ChangeCursorMode(WXGRID_CURSOR_SELECT_ROW, m_rowLabelWin);
} }
} }
@@ -4627,11 +4647,14 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
case WXGRID_CURSOR_SELECT_COL: case WXGRID_CURSOR_SELECT_COL:
if ( (col = XToCol( x )) >= 0 ) if ( (col = XToCol( x )) >= 0 )
{ {
m_selection->SelectCol( col, if ( m_selection )
event.ControlDown(), {
event.ShiftDown(), m_selection->SelectCol( col,
event.AltDown(), event.ControlDown(),
event.MetaDown() ); event.ShiftDown(),
event.AltDown(),
event.MetaDown() );
}
} }
// default label to suppress warnings about "enumeration value // default label to suppress warnings about "enumeration value
@@ -4676,20 +4699,28 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
{ {
if ( !event.ShiftDown() && !event.ControlDown() ) if ( !event.ShiftDown() && !event.ControlDown() )
ClearSelection(); ClearSelection();
if ( event.ShiftDown() ) if ( m_selection )
m_selection->SelectBlock( 0, {
m_currentCellCoords.GetCol(), if ( event.ShiftDown() )
GetNumberRows() - 1, col, {
event.ControlDown(), m_selection->SelectBlock( 0,
event.ShiftDown(), m_currentCellCoords.GetCol(),
event.AltDown(), GetNumberRows() - 1, col,
event.MetaDown() ); event.ControlDown(),
else event.ShiftDown(),
m_selection->SelectCol( col, event.AltDown(),
event.ControlDown(), event.MetaDown() );
event.ShiftDown(), }
event.AltDown(), else
event.MetaDown() ); {
m_selection->SelectCol( col,
event.ControlDown(),
event.ShiftDown(),
event.AltDown(),
event.MetaDown() );
}
}
ChangeCursorMode(WXGRID_CURSOR_SELECT_COL, m_colLabelWin); ChangeCursorMode(WXGRID_CURSOR_SELECT_COL, m_colLabelWin);
} }
} }
@@ -5021,14 +5052,17 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
ClearSelection(); ClearSelection();
if ( event.ShiftDown() ) if ( event.ShiftDown() )
{ {
m_selection->SelectBlock( m_currentCellCoords.GetRow(), if ( m_selection )
m_currentCellCoords.GetCol(), {
coords.GetRow(), m_selection->SelectBlock( m_currentCellCoords.GetRow(),
coords.GetCol(), m_currentCellCoords.GetCol(),
event.ControlDown(), coords.GetRow(),
event.ShiftDown(), coords.GetCol(),
event.AltDown(), event.ControlDown(),
event.MetaDown() ); event.ShiftDown(),
event.AltDown(),
event.MetaDown() );
}
} }
else if ( XToEdgeOfCol(x) < 0 && else if ( XToEdgeOfCol(x) < 0 &&
YToEdgeOfRow(y) < 0 ) YToEdgeOfRow(y) < 0 )
@@ -5058,12 +5092,15 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
{ {
if ( event.ControlDown() ) if ( event.ControlDown() )
{ {
m_selection->ToggleCellSelection( coords.GetRow(), if ( m_selection )
coords.GetCol(), {
event.ControlDown(), m_selection->ToggleCellSelection( coords.GetRow(),
event.ShiftDown(), coords.GetCol(),
event.AltDown(), event.ControlDown(),
event.MetaDown() ); event.ShiftDown(),
event.AltDown(),
event.MetaDown() );
}
m_selectingTopLeft = wxGridNoCellCoords; m_selectingTopLeft = wxGridNoCellCoords;
m_selectingBottomRight = wxGridNoCellCoords; m_selectingBottomRight = wxGridNoCellCoords;
m_selectingKeyboard = coords; m_selectingKeyboard = coords;
@@ -5071,9 +5108,14 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
else else
{ {
SetCurrentCell( coords ); SetCurrentCell( coords );
if ( m_selection->GetSelectionMode() if ( m_selection )
!= wxGrid::wxGridSelectCells) {
HighlightBlock( coords, coords ); if ( m_selection->GetSelectionMode() !=
wxGrid::wxGridSelectCells )
{
HighlightBlock( coords, coords );
}
}
} }
m_waitForSlowClick = TRUE; m_waitForSlowClick = TRUE;
} }
@@ -5112,14 +5154,19 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
m_winCapture->ReleaseMouse(); m_winCapture->ReleaseMouse();
m_winCapture = NULL; m_winCapture = NULL;
} }
m_selection->SelectBlock( m_selectingTopLeft.GetRow(),
m_selectingTopLeft.GetCol(), if ( m_selection )
m_selectingBottomRight.GetRow(), {
m_selectingBottomRight.GetCol(), m_selection->SelectBlock( m_selectingTopLeft.GetRow(),
event.ControlDown(), m_selectingTopLeft.GetCol(),
event.ShiftDown(), m_selectingBottomRight.GetRow(),
event.AltDown(), m_selectingBottomRight.GetCol(),
event.MetaDown() ); event.ControlDown(),
event.ShiftDown(),
event.AltDown(),
event.MetaDown() );
}
m_selectingTopLeft = wxGridNoCellCoords; m_selectingTopLeft = wxGridNoCellCoords;
m_selectingBottomRight = wxGridNoCellCoords; m_selectingBottomRight = wxGridNoCellCoords;
} }
@@ -5775,12 +5822,15 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
case WXK_SPACE: case WXK_SPACE:
if ( event.ControlDown() ) if ( event.ControlDown() )
{ {
m_selection->ToggleCellSelection( m_currentCellCoords.GetRow(), if ( m_selection )
m_currentCellCoords.GetCol(), {
event.ControlDown(), m_selection->ToggleCellSelection( m_currentCellCoords.GetRow(),
event.ShiftDown(), m_currentCellCoords.GetCol(),
event.AltDown(), event.ControlDown(),
event.MetaDown() ); event.ShiftDown(),
event.AltDown(),
event.MetaDown() );
}
break; break;
} }
if ( !IsEditable() ) if ( !IsEditable() )
@@ -5844,14 +5894,20 @@ void wxGrid::OnKeyUp( wxKeyEvent& event )
{ {
if ( m_selectingTopLeft != wxGridNoCellCoords && if ( m_selectingTopLeft != wxGridNoCellCoords &&
m_selectingBottomRight != wxGridNoCellCoords ) m_selectingBottomRight != wxGridNoCellCoords )
m_selection->SelectBlock( m_selectingTopLeft.GetRow(), {
m_selectingTopLeft.GetCol(), if ( m_selection )
m_selectingBottomRight.GetRow(), {
m_selectingBottomRight.GetCol(), m_selection->SelectBlock( m_selectingTopLeft.GetRow(),
event.ControlDown(), m_selectingTopLeft.GetCol(),
TRUE, m_selectingBottomRight.GetRow(),
event.AltDown(), m_selectingBottomRight.GetCol(),
event.MetaDown() ); event.ControlDown(),
TRUE,
event.AltDown(),
event.MetaDown() );
}
}
m_selectingTopLeft = wxGridNoCellCoords; m_selectingTopLeft = wxGridNoCellCoords;
m_selectingBottomRight = wxGridNoCellCoords; m_selectingBottomRight = wxGridNoCellCoords;
m_selectingKeyboard = wxGridNoCellCoords; m_selectingKeyboard = wxGridNoCellCoords;
@@ -5913,16 +5969,20 @@ void wxGrid::HighlightBlock( int topRow, int leftCol, int bottomRow, int rightCo
int temp; int temp;
wxGridCellCoords updateTopLeft, updateBottomRight; wxGridCellCoords updateTopLeft, updateBottomRight;
if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectRows ) if ( m_selection )
{ {
leftCol = 0; if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectRows )
rightCol = GetNumberCols() - 1; {
} leftCol = 0;
else if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectColumns ) rightCol = GetNumberCols() - 1;
{ }
topRow = 0; else if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectColumns )
bottomRow = GetNumberRows() - 1; {
topRow = 0;
bottomRow = GetNumberRows() - 1;
}
} }
if ( topRow > bottomRow ) if ( topRow > bottomRow )
{ {
temp = topRow; temp = topRow;
@@ -8761,7 +8821,8 @@ void wxGrid::SelectRow( int row, bool addToSelected )
if ( IsSelection() && !addToSelected ) if ( IsSelection() && !addToSelected )
ClearSelection(); ClearSelection();
m_selection->SelectRow( row, FALSE, addToSelected ); if ( m_selection )
m_selection->SelectRow( row, FALSE, addToSelected );
} }
@@ -8770,7 +8831,8 @@ void wxGrid::SelectCol( int col, bool addToSelected )
if ( IsSelection() && !addToSelected ) if ( IsSelection() && !addToSelected )
ClearSelection(); ClearSelection();
m_selection->SelectCol( col, FALSE, addToSelected ); if ( m_selection )
m_selection->SelectCol( col, FALSE, addToSelected );
} }
@@ -8780,15 +8842,19 @@ void wxGrid::SelectBlock( int topRow, int leftCol, int bottomRow, int rightCol,
if ( IsSelection() && !addToSelected ) if ( IsSelection() && !addToSelected )
ClearSelection(); ClearSelection();
m_selection->SelectBlock( topRow, leftCol, bottomRow, rightCol, if ( m_selection )
FALSE, addToSelected ); m_selection->SelectBlock( topRow, leftCol, bottomRow, rightCol,
FALSE, addToSelected );
} }
void wxGrid::SelectAll() void wxGrid::SelectAll()
{ {
if ( m_numRows > 0 && m_numCols > 0 ) if ( m_numRows > 0 && m_numCols > 0 )
m_selection->SelectBlock( 0, 0, m_numRows-1, m_numCols-1 ); {
if ( m_selection )
m_selection->SelectBlock( 0, 0, m_numRows-1, m_numCols-1 );
}
} }
// //
@@ -8797,6 +8863,9 @@ void wxGrid::SelectAll()
void wxGrid::DeselectRow( int row ) void wxGrid::DeselectRow( int row )
{ {
if ( !m_selection )
return;
if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectRows ) if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectRows )
{ {
if ( m_selection->IsInSelection(row, 0 ) ) if ( m_selection->IsInSelection(row, 0 ) )
@@ -8815,6 +8884,9 @@ void wxGrid::DeselectRow( int row )
void wxGrid::DeselectCol( int col ) void wxGrid::DeselectCol( int col )
{ {
if ( !m_selection )
return;
if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectColumns ) if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectColumns )
{ {
if ( m_selection->IsInSelection(0, col ) ) if ( m_selection->IsInSelection(0, col ) )
@@ -8833,31 +8905,32 @@ void wxGrid::DeselectCol( int col )
void wxGrid::DeselectCell( int row, int col ) void wxGrid::DeselectCell( int row, int col )
{ {
if ( m_selection->IsInSelection(row, col) ) if ( m_selection && m_selection->IsInSelection(row, col) )
m_selection->ToggleCellSelection(row, col); m_selection->ToggleCellSelection(row, col);
} }
bool wxGrid::IsSelection() bool wxGrid::IsSelection()
{ {
return ( m_selection->IsSelection() || return ( m_selection && (m_selection->IsSelection() ||
( m_selectingTopLeft != wxGridNoCellCoords && ( m_selectingTopLeft != wxGridNoCellCoords &&
m_selectingBottomRight != wxGridNoCellCoords ) ); m_selectingBottomRight != wxGridNoCellCoords) ) );
} }
bool wxGrid::IsInSelection( int row, int col ) bool wxGrid::IsInSelection( int row, int col )
{ {
return ( m_selection->IsInSelection( row, col ) || return ( m_selection && (m_selection->IsInSelection( row, col ) ||
( row >= m_selectingTopLeft.GetRow() && ( row >= m_selectingTopLeft.GetRow() &&
col >= m_selectingTopLeft.GetCol() && col >= m_selectingTopLeft.GetCol() &&
row <= m_selectingBottomRight.GetRow() && row <= m_selectingBottomRight.GetRow() &&
col <= m_selectingBottomRight.GetCol() ) ); col <= m_selectingBottomRight.GetCol() )) );
} }
void wxGrid::ClearSelection() void wxGrid::ClearSelection()
{ {
m_selectingTopLeft = wxGridNoCellCoords; m_selectingTopLeft = wxGridNoCellCoords;
m_selectingBottomRight = wxGridNoCellCoords; m_selectingBottomRight = wxGridNoCellCoords;
m_selection->ClearSelection(); if ( m_selection )
m_selection->ClearSelection();
} }