private FeedColumnLayout FeedColumnLayoutFromCurrentSettings()
{
try
{
var layout = new FeedColumnLayout();
lock (Columns)
{
if (_sorter.SortColumnIndex >= 0 && _sorter.SortColumnIndex < Columns.Count)
{
layout.SortByColumn = Columns[_sorter.SortColumnIndex].Key;
layout.SortOrder = _sorter.SortOrder;
}
int[] colOrder = GetColumnOrderArray();
var aCols = new List <string>(Columns.Count);
var aColWidths = new List <int>(Columns.Count);
for (int i = 0; i < Columns.Count; i++)
{
aCols.Add(Columns[colOrder[i]].Key);
aColWidths.Add(Columns[colOrder[i]].Width);
}
layout.Columns = aCols;
layout.ColumnWidths = aColWidths;
}
return(layout);
}
catch
{
return(null);
}
}
private void RaiseFeedColumnLayoutModifiedEvent(FeedColumnLayout layout)
{
if (ListLayoutModified != null)
{
try
{
ListLayoutModified(this, new ListLayoutEventArgs(layout));
}
catch (Exception ex)
{
_log.Error("Event ListLayoutModified() failed", ex);
}
}
}
/// <summary>
/// Tests for relevant modifications related to the listview layout
/// and raise the ListLayoutModified event
/// </summary>
public void CheckForLayoutModifications()
{
FeedColumnLayout layout = _layout;
if (layout != null)
{
GuiInvoker.Invoke(this, delegate
{
FeedColumnLayout current = FeedColumnLayoutFromCurrentSettings();
if (!layout.Equals(current))
{
RaiseFeedColumnLayoutModifiedEvent(current);
}
});
}
}
private bool RaiseBeforeFeedColumnLayoutChangeEventCancel(FeedColumnLayout newLayout)
{
bool cancel = false;
if (BeforeListLayoutChange != null)
{
var e = new ListLayoutCancelEventArgs(newLayout, false);
try
{
BeforeListLayoutChange(this, e);
cancel = e.Cancel;
}
catch (Exception ex)
{
_log.Error("Event BeforeListLayoutChange() failed", ex);
}
}
return(cancel);
}
/// <summary>
/// Take over any layout modifications, so CheckForLayoutModifications() will
/// not raise the ListLayoutModified event
/// </summary>
public void ApplyLayoutModifications()
{
_layout = FeedColumnLayoutFromCurrentSettings();
}
public ListLayoutCancelEventArgs(FeedColumnLayout newLayout, bool cancel) : base(cancel)
{
this._layout = newLayout;
}
public ListLayoutEventArgs(FeedColumnLayout layout) : base()
{
this._layout = layout;
}