/***************************************************************************/
/// <summary>
/// This can't be called until Window.OnContentRendered() is called,
/// otherwise the adorner layer for the header items won't exist.
/// "Although the logical tree can be traversed within the Window's constructor,
/// the visual tree is empty until the Window undergoes layout at least once."
/// </summary>
public void SortOnce()
{
Items.SortDescriptions.Clear();
/// Clear all adorners.
foreach (KeyValuePair <string, SortDirectionAdorner> ThisPair in m_LastHeaderAdornerDictionary)
{
TaggedGridViewColumn ThisColumn = m_ColumnDictionary[ThisPair.Key];
GridViewColumnHeader ThisHeader = (ThisColumn.Header as GridViewColumnHeader);
AdornerLayer ThisLayer = AdornerLayer.GetAdornerLayer(ThisHeader);
if (ThisLayer != null)
{
ThisLayer.Remove(ThisPair.Value);
}
}
m_LastHeaderAdornerDictionary.Clear();
/// Add new adorners.
foreach (ColumnLayout.SortDesc ThisDesc in m_SavedLayout.m_aColumnSortOrderList)
{
TaggedGridViewColumn ThisColumn = m_ColumnDictionary[ThisDesc.m_strTag];
GridViewColumnHeader ThisHeader = (ThisColumn.Header as GridViewColumnHeader);
SortDirectionAdorner NewAdorner = new SortDirectionAdorner(ThisHeader, Items.SortDescriptions.Count, ThisDesc.m_bSortAscending);
AdornerLayer ThisLayer = AdornerLayer.GetAdornerLayer(ThisHeader);
if (ThisLayer != null)
{
ThisLayer.Add(NewAdorner);
}
m_LastHeaderAdornerDictionary.Add(ThisColumn.Tag, NewAdorner);
string strSortProperty = (ThisColumn.DisplayMemberBinding as Binding).Path.Path;
Items.SortDescriptions.Add(new SortDescription(strSortProperty, ThisDesc.m_bSortAscending ? ListSortDirection.Ascending : ListSortDirection.Descending));
}
return;
}
/***************************************************************************/
protected void OnHeaderClick(object sender, RoutedEventArgs e)
{
GridViewColumnHeader ThisHeader = (sender as GridViewColumnHeader);
TaggedGridViewColumn ThisColumn = (ThisHeader.Column as TaggedGridViewColumn);
/// Simply invert the toggle if it is the same column as the main.
if (ThisColumn.Tag == m_SavedLayout.m_aColumnSortOrderList[0].m_strTag)
{
m_SavedLayout.m_aColumnSortOrderList[0].m_bSortAscending = !m_SavedLayout.m_aColumnSortOrderList[0].m_bSortAscending;
}
/// Otherwise copy it and overwrite everything.
else
{
bool bSortAscending = m_SavedLayout.m_aColumnSortOrderList[0].m_bSortAscending;
m_SavedLayout.m_aColumnSortOrderList.Clear();
m_SavedLayout.m_aColumnSortOrderList.Add(new ColumnLayout.SortDesc(ThisColumn.Tag, bSortAscending));
}
SortOnce();
return;
}
/***************************************************************************/
public void SaveLayout()
{
if (m_SavedLayout == null)
{
throw new Exception("A layout object must be linked to this PersistentDetailedListView.");
}
m_SavedLayout.m_astrColumnDisplayOrderList.Clear();
//m_ColumnDescDictionary.Clear();
for (int iIndex = 0; iIndex < m_wndGridView.Columns.Count; iIndex++)
{
TaggedGridViewColumn ThisColumn = (m_wndGridView.Columns[iIndex] as TaggedGridViewColumn);
m_SavedLayout.m_astrColumnDisplayOrderList.Add(ThisColumn.Tag);
/// Save the details without erasing the dictionary (all of it will be saved to disk somehow).
ColumnLayout.ColumnDesc ThisDesc = null;
if (m_SavedLayout.m_ColumnDescDictionary.TryGetValue(ThisColumn.Tag, out ThisDesc))
{
ThisDesc.m_fWidth = ThisColumn.Width;
}
}
return;
}
