private static void OnGroupingChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
ArtPanelList artPanelList = (ArtPanelList)sender;
artPanelList.Items.GroupDescriptions.Clear();
switch ((Grouping)e.NewValue)
{
case Grouping.Local:
//Group by whether the source is local or not
artPanelList.Items.GroupDescriptions.Add(new LocalGroupDescription());
break;
case Grouping.Source:
//Group by source name
artPanelList.Items.GroupDescriptions.Add(new System.Windows.Data.PropertyGroupDescription("SourceName"));
break;
case Grouping.SourceCategory:
artPanelList.Items.GroupDescriptions.Add(new System.Windows.Data.PropertyGroupDescription("SourceCategory"));
break;
case Grouping.Type:
artPanelList.Items.GroupDescriptions.Add(new System.Windows.Data.PropertyGroupDescription("CoverType"));
break;
case Grouping.Size:
artPanelList.Items.GroupDescriptions.Add(new SizeGroupDescription());
break;
case Grouping.InfoUri:
artPanelList.Items.GroupDescriptions.Add(new System.Windows.Data.PropertyGroupDescription("InfoUri"));
break;
}
}
private static object CoercePanelWidth(DependencyObject sender, object newValue)
{
if ((Keyboard.Modifiers & ModifierKeys.Shift) == ModifierKeys.Shift ||
Keyboard.GetKeyStates(Key.Left) == KeyStates.Down ||
Keyboard.GetKeyStates(Key.Up) == KeyStates.Down ||
Keyboard.GetKeyStates(Key.Right) == KeyStates.Down ||
Keyboard.GetKeyStates(Key.Down) == KeyStates.Down)
{
//Return the value unsnapped if Shift is held down (to mean unsnapped)
//or if any of the direction keys are pressed (which means this is being
//adjusted via the keyboard)
return(newValue);
}
ArtPanelList artPanelList = (ArtPanelList)sender;
if (artPanelList.PanelWidthSnapping > 0 && artPanelList.ItemsPresenter != null)
{
//Check if the panel width is close (within PanelWidthSnapping) to a neat arrangment
double value = (double)newValue;
double nearestArrangedPanelWidth = artPanelList.GetNearestArrangedPanelWidth(value);
if (Math.Abs(nearestArrangedPanelWidth - value) <= artPanelList.PanelWidthSnapping)
{
return(nearestArrangedPanelWidth);
}
}
//Return the value un-coerced
return(newValue);
}
private static void OnNoAutoReSortChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
if (false.Equals(e.NewValue) && !false.Equals(e.OldValue))
{
// When turned off, perform a full re-sort and re-filter.
ArtPanelList artPanelList = (ArtPanelList)sender;
// HACK: Reapply filter to force refresh (as calling Refresh won't actually refresh if it doesn't think one is needed!)
artPanelList.Items.Filter = artPanelList.Items.Filter;
}
}
private static void OnFilterPropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
ArtPanelList artPanelList = (ArtPanelList)sender;
if (artPanelList.DisableFilters || (!artPanelList.UseMaximumImageSize && !artPanelList.UseMinimumImageSize && (artPanelList.AllowedCoverTypes == AllowedCoverType.Any)))
{
artPanelList.Items.Filter = null; //No filtering required
}
else
{
artPanelList.Items.Filter = new Predicate <object>(artPanelList.FilterPredicate); //Apply the new filter
}
}
private static object CoerceThumbSize(DependencyObject sender, object value)
{
ArtPanelList artPanelList = (ArtPanelList)sender;
if (artPanelList.ItemsPresenter == null)
{
return(value);
}
//Restrict to be no larger than the smallest dimension of the list control
double maxSize = Math.Min(artPanelList.ItemsPresenter.ActualWidth, artPanelList.ActualHeight) - 10;
return((double)value < maxSize ? value : maxSize);
}
private static void OnSortDescriptionChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
ArtPanelList artPanelList = (ArtPanelList)sender;
artPanelList.Items.SortDescriptions.Clear();
SortDescription sortDescription = (SortDescription)e.NewValue;
if (!String.IsNullOrEmpty(sortDescription.PropertyName))
{
artPanelList.Items.SortDescriptions.Add(sortDescription);
//HACK: If sorting by ImageWidth, use ImageHeight as a secondary key.
if (sortDescription.PropertyName == "ImageWidth")
{
artPanelList.Items.SortDescriptions.Add(new SortDescription("ImageHeight", sortDescription.Direction));
}
}
}