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get rid of MSVC warning about possibly uninitialized variable in CalcAndSendEvent() and also make its code somewhat more structured

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@53797 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2008-05-27 23:21:29 +00:00
parent 575cabba69
commit 7ead384579
1 changed files with 65 additions and 61 deletions
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126
src/common/lboxcmn.cpp
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@@ -103,91 +103,95 @@ static void LBSendEvent( wxCommandEvent &event, wxListBoxBase *listbox, int item
void wxListBoxBase::CalcAndSendEvent()
{
wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, GetId() );
wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, GetId());
event.SetEventObject( this );
wxArrayInt selections;
GetSelections( selections );
if ((selections.GetCount() == 0) && (m_oldSelections.GetCount() == 0))
GetSelections(selections);
if ( selections.empty() && m_oldSelections.empty() )
{
// nothing changed, just leave
return;
}
const size_t countSel = selections.size(),
countSelOld = m_oldSelections.size();
if ( countSel == countSelOld )
{
bool changed = false;
for ( size_t idx = 0; idx < countSel; idx++ )
{
// nothing changed, just leave
return;
}
if (selections.GetCount() == m_oldSelections.GetCount())
{
bool changed = false;
size_t idx;
for (idx = 0; idx < selections.GetCount(); idx++)
if (selections[idx] != m_oldSelections[idx])
{
if (selections[idx] != m_oldSelections[idx])
{
changed = true;
break;
}
changed = true;
break;
}
// nothing changed, just leave
if (!changed)
return;
}
if (selections.GetCount() == 0)
{
// indicate that this is a deselection
event.SetExtraLong( 0 );
int item = m_oldSelections[0];
m_oldSelections = selections;
LBSendEvent( event, this, item );
return;
}
int item;
// nothing changed, just leave
if ( !changed )
return;
}
int item = wxNOT_FOUND;
if ( selections.empty() )
{
// indicate that this is a deselection
event.SetExtraLong(0);
item = m_oldSelections[0];
}
else // we [still] have some selections
{
// Now test if any new item is selected
bool any_new_selected = false;
size_t idx;
for (idx = 0; idx < selections.GetCount(); idx++)
for ( size_t idx = 0; idx < countSel; idx++ )
{
item = selections[idx];
if (m_oldSelections.Index(item) == wxNOT_FOUND)
if ( m_oldSelections.Index(item) == wxNOT_FOUND )
{
any_new_selected = true;
break;
}
}
if (any_new_selected)
if ( any_new_selected )
{
// indicate that this is a selection
event.SetExtraLong( 1 );
m_oldSelections = selections;
LBSendEvent( event, this, item );
return;
event.SetExtraLong(1);
}
// Now test if any new item is deselected
bool any_new_deselected = false;
for (idx = 0; idx < m_oldSelections.GetCount(); idx++)
else // no new items selected
{
item = m_oldSelections[idx];
if (selections.Index(item) == wxNOT_FOUND)
// Now test if any new item is deselected
bool any_new_deselected = false;
for ( size_t idx = 0; idx < countSelOld; idx++ )
{
any_new_deselected = true;
break;
item = m_oldSelections[idx];
if ( selections.Index(item) == wxNOT_FOUND )
{
any_new_deselected = true;
break;
}
}
if ( any_new_deselected )
{
// indicate that this is a selection
event.SetExtraLong(0);
}
else
{
item = wxNOT_FOUND; // this should be impossible
}
}
if (any_new_deselected)
{
// indicate that this is a selection
event.SetExtraLong( 0 );
m_oldSelections = selections;
LBSendEvent( event, this, item );
return;
}
wxLogError( wxT("Wrong wxListBox selection") );
}
wxASSERT_MSG( item != wxNOT_FOUND,
"Logic error in wxListBox selection event generation code" );
m_oldSelections = selections;
LBSendEvent(event, this, item);
}
// ----------------------------------------------------------------------------