/// <summary>
/// Gets the <see cref="System.Windows.Data.CollectionViewSource"/>.
/// </summary>
/// <param name="source">the Source</param>
public static CollectionViewSource GetCollectionViewSource(object source)
{
if (!FrameworkDispatcherUtility.HasCurrentWindowsApplication())
{
return(null);
}
var viewSource = new CollectionViewSource();
SetSource(viewSource, source);
viewSource.CheckViewSource();
return(viewSource);
}
/// <summary>
/// Applies a sort with the specified descriptions.
/// </summary>
/// <param name="viewSource">the <see cref="System.Windows.Data.CollectionViewSource"/></param>
/// <param name="descriptions">the sort descriptions</param>
public static void ApplySort(CollectionViewSource viewSource, IEnumerable <SortDescription> descriptions)
{
if (!FrameworkDispatcherUtility.HasCurrentWindowsApplication())
{
return;
}
viewSource.CheckViewSource();
if (viewSource.SortDescriptions.Any())
{
viewSource.SortDescriptions.Clear();
}
descriptions.ForEachInEnumerable(i => viewSource.SortDescriptions.Add(i));
}
/// <summary>
/// Gets the specified Collection View and applies the specified Source
/// when <see cref="System.Windows.Data.CollectionViewSource.Source"/> is <c>null</c>
/// or when <c>reapplySource</c> is <c>true</c>.
/// </summary>
/// <param name="viewSource">the <see cref="System.Windows.Data.CollectionViewSource"/></param>
/// <param name="source">the Source</param>
/// <remarks>
/// Because <see cref="System.Windows.Data.CollectionViewSource"/> has thread affinity
/// this extension method will “new up” an instance of <see cref="System.Windows.Data.CollectionViewSource"/>
/// when <c>viewSource</c> is null. This attempts to ensure that the View Source is generated
/// on the ‘getting’ thread (usually the UI thread).
/// </remarks>
public static ICollectionView GetView(CollectionViewSource viewSource, object source)
{
if (!FrameworkDispatcherUtility.HasCurrentWindowsApplication())
{
return(null);
}
if (viewSource == null)
{
viewSource = new CollectionViewSource();
}
SetSource(viewSource, source);
return(viewSource.View);
}
/// <summary>
/// Sets the <see cref="System.Windows.Data.CollectionViewSource.Source"/>
/// </summary>
/// <param name="viewSource">the <see cref="System.Windows.Data.CollectionViewSource"/></param>
/// <param name="source">the Source</param>
/// <remarks>
/// Memory leaks and/or orphaned objects can result from setting the Source more than once.
/// </remarks>
public static void SetSource(CollectionViewSource viewSource, object source)
{
if (!FrameworkDispatcherUtility.HasCurrentWindowsApplication())
{
return;
}
if (viewSource == null)
{
throw new NullReferenceException("The expected Collection View Source is not here.");
}
if ((viewSource.Source == null) && (source != null))
{
viewSource.Source = source;
}
}
/// <summary>
/// Applies the groupings.
/// </summary>
/// <param name="viewSource">The view source.</param>
/// <param name="groupings">The groupings.</param>
public static void ApplyGroupings(CollectionViewSource viewSource, IEnumerable <GroupDescription> groupings)
{
if (!FrameworkDispatcherUtility.HasCurrentWindowsApplication())
{
return;
}
viewSource.CheckViewSource();
using (viewSource.DeferRefresh())
{
if (viewSource.GroupDescriptions.Any())
{
viewSource.GroupDescriptions.Clear();
}
groupings.ForEachInEnumerable(i => viewSource.GroupDescriptions.Add(i));
}
}
/// <summary>
/// Gets the specified Collection View Source
/// from the specified set with the specified key.
/// </summary>
/// <param name="viewSourceSet">the set of view sources</param>
/// <param name="key">the set key</param>
public static CollectionViewSource GetCollectionViewSource(this Dictionary <string, CollectionViewSource> viewSourceSet, string key)
{
if (!FrameworkDispatcherUtility.HasCurrentWindowsApplication())
{
return(null);
}
if (viewSourceSet == null)
{
throw new NullReferenceException("The expected Collection View Source set is not here");
}
if (!viewSourceSet.ContainsKey(key))
{
throw new NullReferenceException("The expected Collection View Source set key is not here.");
}
var viewSource = viewSourceSet[key];
return(viewSource);
}
/// <summary>
/// Verifies that the Collection View Source is initialized.
/// </summary>
/// <param name="viewSource">the <see cref="System.Windows.Data.CollectionViewSource"/></param>
public static void CheckViewSource(this CollectionViewSource viewSource)
{
if (!FrameworkDispatcherUtility.HasCurrentWindowsApplication())
{
return;
}
if (viewSource == null)
{
throw new NullReferenceException("The expected Collection View Source is not here.");
}
if (!FrameworkDispatcherUtility.IsCallingFromDispatcherThread())
{
throw new ApplicationException("The Collection View Source is not being called from the Dispatcher thread.");
}
if (viewSource.Source == null)
{
throw new NullReferenceException("The expected Collection View Source data is not here.");
}
}
/// <summary>
/// Hides the <see cref="Window"/> on closing.
/// </summary>
/// <param name="window">The window.</param>
/// <param name="args">The <see cref="CancelEventArgs"/> instance containing the event data.</param>
public static void HideWindowOnClosing(this Window window, CancelEventArgs args)
{
if (!FrameworkDispatcherUtility.HasCurrentWindowsApplication())
{
return;
}
if (window == null)
{
return;
}
if (args == null)
{
return;
}
args.Cancel = true;
Application.Current.Dispatcher.BeginInvoke(DispatcherPriority.Background,
(DispatcherOperationCallback)(i =>
{
window.Hide();
return(null);
}), null);
}
