/// <summary>
/// Initializes a new instance of <see cref="InnerListColumn"/> class with the specified data description and visibility.
/// </summary>
/// <param name="dataDescription">The description of the data this column is bound to.</param>
/// <param name="isVisible">Whether the column is initially visible.</param>
/// <param name="createDefaultBinding">Whether the column should create a default binding using the specified data's property.</param>
public InnerListColumn(UIPropertyGroupDescription dataDescription, bool isVisible, bool createDefaultBinding)
{
if (dataDescription == null)
{
throw new ArgumentNullException("dataDescription");
}
GridViewColumnHeader header = new GridViewColumnHeader();
header.Content = dataDescription.DisplayContent;
header.DataContext = this;
Binding automationNameBinding = new Binding("DataDescription.DisplayName");
automationNameBinding.Source = this;
header.SetBinding(AutomationProperties.NameProperty, automationNameBinding);
this.Visible = isVisible;
this.Header = header;
this.DataDescription = dataDescription;
if (createDefaultBinding)
{
var defaultBinding = new Binding(GraphicalHostReflectionWrapper.EscapeBinding(dataDescription.PropertyName));
defaultBinding.StringFormat = GetDefaultStringFormat(dataDescription.DataType);
defaultBinding.ConverterCulture = CultureInfo.CurrentCulture;
this.DisplayMemberBinding = defaultBinding;
}
}
/// <summary>
/// Called when the ItemsSource changes to auto populate the GridView columns
/// with reflection information on the first element of the ItemsSource.
/// </summary>
/// <param name="newValue">
/// The new ItemsSource.
/// This is used just to fetch .the first collection element.
/// </param>
internal void PopulateColumns(System.Collections.IEnumerable newValue)
{
if (newValue == null)
{
return; // No elements, so we can't populate
}
IEnumerator newValueEnumerator = newValue.GetEnumerator();
if (!newValueEnumerator.MoveNext())
{
return; // No first element, so we can't populate
}
object first = newValueEnumerator.Current;
if (first == null)
{
return;
}
Debug.Assert(this.AvailableColumns.Count == 0, "AvailabeColumns should be empty at this point");
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(first);
foreach (PropertyDescriptor property in properties)
{
UIPropertyGroupDescription dataDescription = new UIPropertyGroupDescription(property.Name, property.Name, property.PropertyType);
InnerListColumn column = new InnerListColumn(dataDescription);
this.AvailableColumns.Add(column);
}
}
/// <summary>
/// Initializes a new instance of <see cref="InnerListColumn"/> class with the specified data description and visibility, and creates a simple binding to its property.
/// </summary>
/// <param name="dataDescription">The property description for this column's data.</param>
/// <param name="isVisible">Whether the column is initially visible.</param>
public InnerListColumn(UIPropertyGroupDescription dataDescription, bool isVisible)
: this(dataDescription, isVisible, true)
{
// This constructor just calls another constructor to create a column with a simple binding.
}
/// <summary>
/// Initializes a new instance of <see cref="InnerListColumn"/> class with the specified data description, and creates a simple binding to its property.
/// The column will be initially visible by default.
/// </summary>
/// <param name="dataDescription">The property description for this column's data.</param>
public InnerListColumn(UIPropertyGroupDescription dataDescription)
: this(dataDescription, true, true)
{
// This constructor just calls another constructor to create a visible column with a simple binding.
}