/// <summary>
/// Find a data template that matches a piece of data.
/// </summary>
/// <param name="control">The control searching for the data template.</param>
/// <param name="data">The data.</param>
/// <returns>The data template or null if no matching data template was found.</returns>
public static IDataTemplate FindDataTemplate(this IControl control, object data)
{
foreach (var i in control.GetSelfAndLogicalAncestors().OfType <IControl>())
{
foreach (IDataTemplate dt in i.DataTemplates)
{
if (dt.Match(data))
{
return(dt);
}
}
}
IGlobalDataTemplates global = PerspexLocator.Current.GetService <IGlobalDataTemplates>();
if (global != null)
{
foreach (IDataTemplate dt in global.DataTemplates)
{
if (dt.Match(data))
{
return(dt);
}
}
}
return(null);
}
public static DataTemplate FindDataTemplate(this Control control, object data)
{
// TODO: This needs to traverse the logical tree, not the visual.
foreach (var i in control.GetSelfAndVisualAncestors().OfType <Control>())
{
foreach (DataTemplate dt in i.DataTemplates.Reverse())
{
if (dt.Match(data))
{
return(dt);
}
}
}
IGlobalDataTemplates global = Locator.Current.GetService <IGlobalDataTemplates>();
if (global != null)
{
foreach (DataTemplate dt in global.DataTemplates.Reverse())
{
if (dt.Match(data))
{
return(dt);
}
}
}
return(null);
}
public static IDataTemplate?FindDataTemplate(
this IControl control,
object data,
IDataTemplate?primary = null)
{
if (primary?.Match(data) == true)
{
return(primary);
}
var currentTemplateHost = control as ILogical;
while (currentTemplateHost != null)
{
if (currentTemplateHost is IDataTemplateHost hostCandidate && hostCandidate.IsDataTemplatesInitialized)
{
foreach (IDataTemplate dt in hostCandidate.DataTemplates)
{
if (dt.Match(data))
{
return(dt);
}
}
}
currentTemplateHost = currentTemplateHost.LogicalParent;
}
IGlobalDataTemplates global = AvaloniaLocator.Current.GetService <IGlobalDataTemplates>();
if (global != null && global.IsDataTemplatesInitialized)
{
foreach (IDataTemplate dt in global.DataTemplates)
{
if (dt.Match(data))
{
return(dt);
}
}
}
return(null);
}
/// <summary>
/// Find a data template that matches a piece of data.
/// </summary>
/// <param name="control">The control searching for the data template.</param>
/// <param name="data">The data.</param>
/// <param name="primary">
/// An optional primary template that can will be tried before the DataTemplates in the
/// tree are searched.
/// </param>
/// <returns>The data template or null if no matching data template was found.</returns>
public static IDataTemplate FindDataTemplate(
this IControl control,
object data,
IDataTemplate primary = null)
{
if (primary?.Match(data) == true)
{
return(primary);
}
foreach (var i in control.GetSelfAndLogicalAncestors().OfType <IDataTemplateHost>())
{
if (i.IsDataTemplatesInitialized)
{
foreach (IDataTemplate dt in i.DataTemplates)
{
if (dt.Match(data))
{
return(dt);
}
}
}
}
IGlobalDataTemplates global = AvaloniaLocator.Current.GetService <IGlobalDataTemplates>();
if (global != null)
{
if (global.IsDataTemplatesInitialized)
{
foreach (IDataTemplate dt in global.DataTemplates)
{
if (dt.Match(data))
{
return(dt);
}
}
}
}
return(null);
}
