public ITextStructureNavigator CreateTextStructureNavigator(ITextBuffer textBuffer, IContentType contentType)
{
if (textBuffer is null)
{
throw new ArgumentNullException(nameof(textBuffer));
}
if (contentType is null)
{
throw new ArgumentNullException(nameof(contentType));
}
if (providerSelector is null)
{
providerSelector = new ProviderSelector <ITextStructureNavigatorProvider, IContentTypeMetadata>(contentTypeRegistryService, textStructureNavigatorProviders);
}
foreach (var p in providerSelector.GetProviders(contentType))
{
var nav = p.Value.CreateTextStructureNavigator(textBuffer);
if (nav is not null)
{
return(nav);
}
}
Debug.Fail($"Couldn't find a {nameof(ITextStructureNavigatorProvider)}");
return(new TextStructureNavigator(textBuffer, contentTypeRegistryService.UnknownContentType));
}
public ITextParagraphPropertiesFactoryService Select(IContentType contentType)
{
if (providerSelector == null)
{
providerSelector = new ProviderSelector <ITextParagraphPropertiesFactoryService, IContentTypeMetadata>(contentTypeRegistryService, textParagraphPropertiesFactoryServices);
}
return(providerSelector.GetProviders(contentType).FirstOrDefault()?.Value);
}
ITextViewModel CreateTextViewModel(ITextDataModel dataModel, ITextViewRoleSet roles)
{
if (providerSelector is null)
{
providerSelector = new ProviderSelector <ITextViewModelProvider, IContentTypeAndTextViewRoleMetadata>(contentTypeRegistryService, textViewModelProviders);
}
var contentType = dataModel.ContentType;
foreach (var p in providerSelector.GetProviders(contentType))
{
var model = p.Value.CreateTextViewModel(dataModel, roles);
if (!(model is null))
{
return(model);
}
}
return(new TextViewModel(dataModel));
}