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optimise startup of wxDataViewIndexListModel

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@49970 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2007-11-15 15:03:48 +00:00
parent 5ef723747c
commit 517166e678
2 changed files with 30 additions and 1 deletions
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3
include/wx/dataview.h
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@@ -255,7 +255,7 @@ public:
virtual int Compare( const wxDataViewItem &item1, const wxDataViewItem &item2,
unsigned int column, bool ascending );
virtual bool HasDefaultCompare() const { return true; }
virtual bool HasDefaultCompare() const;
// implement base methods
@@ -271,6 +271,7 @@ public:
private:
wxDataViewItemArray m_hash;
unsigned int m_lastIndex;
bool m_ordered;
};

28
src/common/datavcmn.cpp
View File

@@ -299,6 +299,8 @@ int wxDataViewModel::Compare( const wxDataViewItem &item1, const wxDataViewItem
wxDataViewIndexListModel::wxDataViewIndexListModel( unsigned int initial_size )
{
m_ordered = true;
// build initial index
unsigned int i;
for (i = 1; i < initial_size+1; i++)
@@ -316,6 +318,8 @@ void wxDataViewIndexListModel::RowPrepended()
m_hash.Insert( (void*) id, 0 );
wxDataViewItem item( (void*) id );
ItemAdded( wxDataViewItem(0), item );
m_ordered = false;
}
void wxDataViewIndexListModel::RowInserted( unsigned int before )
@@ -324,6 +328,8 @@ void wxDataViewIndexListModel::RowInserted( unsigned int before )
m_hash.Insert( (void*) id, before );
wxDataViewItem item( (void*) id );
ItemAdded( wxDataViewItem(0), item );
m_ordered = false;
}
void wxDataViewIndexListModel::RowAppended()
@@ -353,6 +359,12 @@ void wxDataViewIndexListModel::RowValueChanged( unsigned int row, unsigned int c
unsigned int wxDataViewIndexListModel::GetRow( const wxDataViewItem &item ) const
{
if (m_ordered)
{
unsigned int pos = (unsigned int) item.GetID();
return pos-1;
}
// assert for not found
return (unsigned int) m_hash.Index( item.GetID() );
}
@@ -363,11 +375,27 @@ wxDataViewItem wxDataViewIndexListModel::GetItem( unsigned int row ) const
return wxDataViewItem( m_hash[row] );
}
bool wxDataViewIndexListModel::HasDefaultCompare() const
{
return !m_ordered;
}
int wxDataViewIndexListModel::Compare(const wxDataViewItem& item1,
const wxDataViewItem& item2,
unsigned int WXUNUSED(column),
bool ascending)
{
if (m_ordered)
{
unsigned int pos1 = (unsigned int) item1.GetID();
unsigned int pos2 = (unsigned int) item2.GetID();
if (ascending)
return pos1 - pos2;
else
return pos2 - pos1;
}
if (ascending)
return GetRow(item1) - GetRow(item2);