/// <summary>
/// Called when [data template selector changed].
/// </summary>
/// <param name="oldValue">The old value.</param>
/// <param name="newValue">The new value.</param>
/// <exception cref="System.ArgumentException">Cannot set both ItemTemplate and ItemTemplateSelector;ItemTemplateSelector</exception>
protected virtual void OnDataTemplateSelectorChanged(DataTemplateSelector oldValue, DataTemplateSelector newValue)
{
// check to see we don't have an ItemTemplate set
if (ItemTemplate != null && newValue != null)
{
throw new ArgumentException("Cannot set both ItemTemplate and ItemTemplateSelector", "ItemTemplateSelector");
}
currentItemSelector = newValue;
}
/// <summary>
/// Called when [data template selector changed].
/// </summary>
/// <param name="oldValue">The old value.</param>
/// <param name="newValue">The new value.</param>
protected virtual void OnDataTemplateSelectorChanged(DataTemplateSelector oldValue, DataTemplateSelector newValue)
{
// Cache locally
currentItemSelector = newValue;
if (this.contentView != null)//may be constructing
{
this.contentView.ItemTemplateSelector = currentItemSelector;
}
}
/// <summary>
/// Views for.
/// </summary>
/// <param name="This">The this.</param>
/// <param name="item">The item.</param>
/// <param name="selector">The selector.</param>
/// <returns>View.</returns>
/// <exception cref="System.InvalidOperationException">DataTemplate must be a View</exception>
public static View ViewFor(this BindableObject This, object item, DataTemplateSelector selector)
{
if (selector != null)
{
var template = selector.SelectTemplate(item, This);
if (template != null)
{
var templateInstance = template.CreateContent();
// see if it's a view or a cell
var templateView = templateInstance as View;
if (templateView == null)
{
throw new InvalidOperationException("DataTemplate must be a View");
}
return(templateView);
}
}
return(null);
}
private static void OnDataTemplateSelectorChanged(BindableObject bindable, DataTemplateSelector oldvalue, DataTemplateSelector newvalue)
{
((RepeaterView <T>)bindable).OnDataTemplateSelectorChanged(oldvalue, newvalue);
}
/// <summary>
/// Called when [data template selector changed].
/// </summary>
/// <param name="oldValue">The old value.</param>
/// <param name="newValue">The new value.</param>
protected virtual void OnDataTemplateSelectorChanged(DataTemplateSelector oldValue, DataTemplateSelector newValue)
{
// cache value locally
currentItemSelector = newValue;
}
/// <summary>
/// Called when [data template selector changed].
/// </summary>
/// <param name="bindable">The bindable.</param>
/// <param name="oldvalue">The oldvalue.</param>
/// <param name="newvalue">The newvalue.</param>
private static void OnDataTemplateSelectorChanged(BindableObject bindable, DataTemplateSelector oldvalue, DataTemplateSelector newvalue)
{
((ExtendedListView)bindable).OnDataTemplateSelectorChanged(oldvalue, newvalue);
}
