/// <summary>Retrieves the <see cref="T:System.Windows.Data.BindingBase" /> object that is set on the specified property.</summary>
/// <param name="target">The object where <paramref name="dp" /> is.</param>
/// <param name="dp">The binding target property from which to retrieve the <see cref="T:System.Windows.Data.BindingBase" /> object.</param>
/// <returns>The <see cref="T:System.Windows.Data.BindingBase" /> object that is set on the given property or <see langword="null" /> if no binding object has been set.</returns>
/// <exception cref="T:System.ArgumentNullException">The <paramref name="target" /> and <paramref name="dp" /> parameters cannot be <see langword="null" />.</exception>
// Token: 0x06001A2B RID: 6699 RVA: 0x0007D0E0 File Offset: 0x0007B2E0
public static BindingBase GetBindingBase(DependencyObject target, DependencyProperty dp)
{
BindingExpressionBase bindingExpressionBase = BindingOperations.GetBindingExpressionBase(target, dp);
if (bindingExpressionBase == null)
{
return(null);
}
return(bindingExpressionBase.ParentBindingBase);
}
/// <summary>Returns the <see cref="T:System.Windows.Data.BindingExpression" /> object associated with the specified binding target property on the specified object.</summary>
/// <param name="target">The binding target object where <paramref name="dp" /> is.</param>
/// <param name="dp">The binding target property from which to retrieve the <see cref="T:System.Windows.Data.BindingExpression" /> object.</param>
/// <returns>The <see cref="T:System.Windows.Data.BindingExpression" /> object associated with the given property or <see langword="null" /> if none exists. If a <see cref="T:System.Windows.Data.PriorityBindingExpression" /> object is set on the property, the <see cref="P:System.Windows.Data.PriorityBindingExpression.ActiveBindingExpression" /> is returned.</returns>
/// <exception cref="T:System.ArgumentNullException">The <paramref name="target" /> and <paramref name="dp" /> parameters cannot be <see langword="null" />.</exception>
// Token: 0x06001A30 RID: 6704 RVA: 0x0007D164 File Offset: 0x0007B364
public static BindingExpression GetBindingExpression(DependencyObject target, DependencyProperty dp)
{
BindingExpressionBase bindingExpressionBase = BindingOperations.GetBindingExpressionBase(target, dp);
PriorityBindingExpression priorityBindingExpression = bindingExpressionBase as PriorityBindingExpression;
if (priorityBindingExpression != null)
{
bindingExpressionBase = priorityBindingExpression.ActiveBindingExpression;
}
return(bindingExpressionBase as BindingExpression);
}
/// <summary>Returns the <see cref="T:System.Windows.Data.PriorityBindingExpression" /> object associated with the specified binding target property on the specified object.</summary>
/// <param name="target">The binding target object where <paramref name="dp" /> is.</param>
/// <param name="dp">The binding target property from which to retrieve the <see cref="T:System.Windows.Data.PriorityBindingExpression" /> object.</param>
/// <returns>The <see cref="T:System.Windows.Data.PriorityBindingExpression" /> object associated with the given property or <see langword="null" /> if none exists.</returns>
/// <exception cref="T:System.ArgumentNullException">The <paramref name="target" /> and <paramref name="dp" /> parameters cannot be <see langword="null" />.</exception>
// Token: 0x06001A32 RID: 6706 RVA: 0x0007D19E File Offset: 0x0007B39E
public static PriorityBindingExpression GetPriorityBindingExpression(DependencyObject target, DependencyProperty dp)
{
return(BindingOperations.GetBindingExpressionBase(target, dp) as PriorityBindingExpression);
}
void EnsureView(object source, Type collectionViewType)
{
if (_isInitializing || _deferLevel > 0)
{
return;
}
DataSourceProvider dataProvider = source as DataSourceProvider;
// listen for DataChanged events from an DataSourceProvider
if (dataProvider != _dataProvider)
{
if (_dataProvider != null)
{
DataChangedEventManager.RemoveHandler(_dataProvider, OnDataChanged);
}
_dataProvider = dataProvider;
if (_dataProvider != null)
{
DataChangedEventManager.AddHandler(_dataProvider, OnDataChanged);
_dataProvider.InitialLoad();
}
}
// if the source is DataSourceProvider, use its Data instead
if (dataProvider != null)
{
source = dataProvider.Data;
}
// get the view
ICollectionView view = null;
if (source != null)
{
DataBindEngine engine = DataBindEngine.CurrentDataBindEngine;
ViewRecord viewRecord = engine.GetViewRecord(source, this, collectionViewType, true,
(object x) =>
{
BindingExpressionBase beb = BindingOperations.GetBindingExpressionBase(this, SourceProperty);
return((beb != null) ? beb.GetSourceItem(x) : null);
});
if (viewRecord != null)
{
view = viewRecord.View;
_isViewInitialized = viewRecord.IsInitialized;
// bring view up to date with the CollectionViewSource
if (_version != viewRecord.Version)
{
ApplyPropertiesToView(view);
viewRecord.Version = _version;
}
}
}
// update the View property
SetValue(ViewPropertyKey, view);
}
