public void RegisterViewer(IFileViewerService service)
{
if (service == null)
{
throw new ArgumentNullException(nameof(service));
}
if (service.SupportedFileTypes == null || service.SupportedFileTypes.Length == 0)
{
throw new ArgumentException("service", "one or more supported file types required");
}
foreach (var fileType in service.SupportedFileTypes)
{
var normalizedExtensionName = FileDocumentService.NormalizeExtensionName(fileType.ExtensionName);
this.LogInfo("registering FileViewerService '{0}' for file type '{1}'", service.Name, normalizedExtensionName);
IFileViewerService existedService;
if (_services.TryGetValue(normalizedExtensionName, out existedService))
{
this.LogWarning("a FileViewerService '{0}' of file type '{1}' is already existed, it will be replaced",
existedService.Name,
normalizedExtensionName);
}
_services[normalizedExtensionName] = service;
_fileTypes[normalizedExtensionName] = fileType;
}
}
public ImageSource GetIconSource(string extensionName)
{
extensionName = FileDocumentService.NormalizeExtensionName(extensionName);
FileTypeInfo fileTypeInfo;
if (_fileTypes.TryGetValue(extensionName, out fileTypeInfo))
{
return(fileTypeInfo.IconSource);
}
return(null);
}
public IFileViewerService GetFileViewerService(string extensionName)
{
extensionName = FileDocumentService.NormalizeExtensionName(extensionName);
IFileViewerService service;
if (_services.TryGetValue(extensionName, out service))
{
return(service);
}
this.LogWarning("no FileViewerService for extension name '{0}' found", extensionName);
return(null);
}
public bool HasFileViewerService(string extensionName)
{
return(_services.ContainsKey(FileDocumentService.NormalizeExtensionName(extensionName)));
}