} // proc RefreshDefaultResourcesAsync
private async Task RefreshTemplatesAsync()
{
var priority = 1;
using (var xml = PpsXmlPosition.CreateLinePositionReader(await OpenXmlDocumentAsync("wpf/templates.xaml", true, true)))
{
if (xml == null)
{
return; // no templates found
}
// read root
await xml.ReadStartElementAsync(StuffUI.xnTemplates);
while (xml.NodeType != XmlNodeType.EndElement)
{
if (xml.NodeType == XmlNodeType.Element)
{
if (xml.IsName(StuffUI.xnResources))
{
if (!await xml.ReadAsync())
{
break; // fetch element
}
// check for a global resource dictionary, and update the main resources
await UpdateResourcesAsync(xml);
await xml.ReadEndElementAsync(); // resource
}
else if (xml.IsName(StuffUI.xnTemplate))
{
var key = xml.GetAttribute("key", String.Empty);
if (String.IsNullOrEmpty(key))
{
xml.Skip();
break;
}
var templateDefinition = templateDefinitions[key];
if (templateDefinition == null)
{
templateDefinition = new PpsDataTemplateDefinition(this, key);
templateDefinitions.AppendItem(templateDefinition);
}
priority = await templateDefinition.AppendTemplateAsync(xml, priority);
await xml.ReadEndElementAsync();
await xml.SkipAsync();
}
else
{
await xml.SkipAsync();
}
}
else
{
await xml.ReadAsync();
}
}
await xml.ReadEndElementAsync(); // templates
} // using xml
// remove unused templates
// todo:
} // proc RefreshTemplatesAsync
public DefaultDataTemplateSelector(PpsDataTemplateDefinition templateDefinition)
{
this.templateDefinition = templateDefinition ?? throw new ArgumentNullException(nameof(templateDefinition));
}