// If a DataGridCollectionViewBase is used, get the ItemProperties it defines to be able to retreive DataGridForeignKeyDescription for each of them
// to get the auto-detected ForeignKey ItemsSource (if any).
// If a DataGridCollectionViewBase is not used, the ItemsSource must be manually specified on each Column in order to correctly display/edit the Data
internal static void UpdateColumnsForeignKeyConfigurationsFromDataGridCollectionView(Dictionary <string, ColumnBase> columns, DataGridItemPropertyCollection itemProperties,
bool autoCreateForeignKeyConfigurations)
{
if (itemProperties == null)
{
return;
}
foreach (DataGridItemPropertyBase itemProperty in itemProperties)
{
DataGridForeignKeyDescription description = itemProperty.ForeignKeyDescription;
if (description == null)
{
continue;
}
ColumnBase column;
columns.TryGetValue(itemProperty.Name, out column);
ForeignKeyConfiguration.SynchronizeForeignKeyConfigurationFromForeignKeyDescription(column as Column, description, autoCreateForeignKeyConfigurations);
}
}
private void SetForeignKeyConfiguration(ForeignKeyConfiguration value)
{
this.SetValue(CellEditorContext.ForeignKeyConfigurationPropertyKey, value);
}
internal CellEditorContext(ColumnBase parentColumn, ForeignKeyConfiguration configuration)
{
this.SetParentColumn(parentColumn);
this.SetForeignKeyConfiguration(configuration);
}
private void RefreshDefaultScrollTipContentTemplate()
{
DataGridContext itemContext = DataGridControl.GetDataGridContext(this);
if (itemContext == null)
{
return;
}
DataGridControl parentGridControl = itemContext.DataGridControl;
if ((parentGridControl == null) || (parentGridControl.ScrollViewer == null))
{
return;
}
ColumnCollection columnCollection = itemContext.Columns;
if (columnCollection == null)
{
return;
}
Column mainColumn = columnCollection.MainColumn as Column;
if (mainColumn == null)
{
return;
}
Nequeo.Wpf.DataGrid.Views.UIViewBase uiViewBase = parentGridControl.GetView() as Nequeo.Wpf.DataGrid.Views.UIViewBase;
if (uiViewBase == null)
{
return;
}
// The ScrollTip.ContentTemplate will now be set. This is to avoid
// a null ContentTemplate when the ColumnsCollection update its
// MainColumn after the template is applied
this.ScrollTipContentTemplateNeedsRefresh = false;
ForeignKeyConfiguration configuration = mainColumn.ForeignKeyConfiguration;
// Do not create default template only when none was created before and a template already exists
if ((!this.UsingDefaultScrollTipContentTemplate) && (uiViewBase.ScrollTipContentTemplate != null))
{
if (configuration != null)
{
this.ContentTemplate = configuration.DefaultScrollTipContentTemplate;
}
else
{
// Clear the value in case we previously affected it
this.ClearValue(ScrollTip.ContentTemplateProperty);
// Set the default Binding values
this.SetBinding(ScrollTip.ContentTemplateProperty, this.DefaultScrollTipContentTemplateBinding);
this.SetBinding(ScrollTip.ContentTemplateSelectorProperty, this.DefaultScrollTipContentTemplateSelectorBinding);
}
}
else
{
// A default ContentTemplate template is created using MainColumn as displayed data
this.UsingDefaultScrollTipContentTemplate = true;
// If a configuration was found, the default ContentTemplate will
// be used to convert Content to Foreign value and
// it will use the ScrollTipContentTemplate defined on UIViewBase
// if any
if (configuration == null)
{
// Disable warning for DisplayMemberBinding when internaly used
#pragma warning disable 618
BindingBase displayMemberBinding = mainColumn.DisplayMemberBinding;
#pragma warning restore 618
FrameworkElementFactory contentPresenter = new FrameworkElementFactory(typeof(ContentPresenter));
contentPresenter.SetValue(ContentPresenter.NameProperty, "defaultScrollTipDataTemplateContentPresenter");
contentPresenter.SetBinding(ContentPresenter.ContentProperty, displayMemberBinding);
contentPresenter.SetBinding(ContentPresenter.ContentTemplateProperty, this.DefaultCellContentTemplateBinding);
contentPresenter.SetBinding(ContentPresenter.ContentTemplateSelectorProperty, this.DefaultCellContentTemplateSelectorBinding);
DataTemplate template = new DataTemplate();
template.VisualTree = contentPresenter;
template.Seal();
this.ContentTemplate = template;
}
else
{
this.SetBinding(ContentPresenter.ContentTemplateProperty, this.DefaultCellContentTemplateBinding);
this.SetBinding(ContentPresenter.ContentTemplateSelectorProperty, this.DefaultCellContentTemplateSelectorBinding);
this.ContentTemplate = configuration.DefaultScrollTipContentTemplate;
}
}
}
public override object GetValueFromKey(object key, ForeignKeyConfiguration configuration)
{
// When the Key changes, try to find the data row that has the new key.
// If it is not found, return null.
DataView dataView = configuration.ItemsSource as DataView;
if (dataView == null)
{
DataTable dataTable = configuration.ItemsSource as DataTable;
if (dataTable != null)
{
dataView = dataTable.DefaultView;
}
}
if (dataView == null)
{
return(key);
}
string valuePath = configuration.ValuePath;
if (string.IsNullOrEmpty(valuePath))
{
return(key);
}
dataView.Sort = valuePath;
DataRowView dataRow;
int index = -1;
if ((key != null) && (!object.Equals(string.Empty, key)))
{
try
{
index = dataView.Find(key);
}
catch (Exception)
{
}
}
if (index == -1)
{
dataRow = null;
}
else
{
dataRow = dataView[index];
}
object value = dataRow;
// Use the DisplayMemberPath if defined
if (dataRow != null)
{
if (!string.IsNullOrEmpty(configuration.DisplayMemberPath))
{
value = dataRow[configuration.DisplayMemberPath];
}
}
return(value);
}
public static void RemoveListener(ForeignKeyConfiguration source, IWeakEventListener listener)
{
CurrentManager.ProtectedRemoveListener(source, listener);
}
public virtual object GetKeyFromValue(object value, ForeignKeyConfiguration configuration)
{
return(value);
}
public virtual object GetValueFromKey(object key, ForeignKeyConfiguration configuration)
{
return(key);
}