public IViewContent CreateContentForFile(OpenedFile file)
{
var codons = SD.DisplayBindingService.GetCodonsPerFileName(file.FileName);
DisplayBindingDescriptor bestMatch = null;
double max = double.NegativeInfinity;
const int BUFFER_LENGTH = 4 * 1024;
using (var stream = file.OpenRead()) {
string mime = "text/plain";
if (stream.Length > 0)
{
stream.Position = 0;
mime = MimeTypeDetection.FindMimeType(new BinaryReader(stream).ReadBytes(BUFFER_LENGTH));
}
foreach (var codon in codons)
{
stream.Position = 0;
double value = codon.Binding.AutoDetectFileContent(file.FileName, stream, mime);
if (value > max)
{
max = value;
bestMatch = codon;
}
}
}
if (bestMatch == null)
{
throw new InvalidOperationException();
}
return(bestMatch.Binding.CreateContentForFile(file));
}
DisplayBindingDescriptor AddExternalProcessDisplayBindingInternal(ExternalProcessDisplayBinding binding)
{
externalProcessDisplayBindings.Add(binding);
DisplayBindingDescriptor descriptor = new DisplayBindingDescriptor(binding) {
Id = binding.Id,
Title = binding.Title
};
bindings.Add(descriptor);
return descriptor;
}
static bool IsPrimaryBindingValidForFileName(DisplayBindingDescriptor binding, FileName filename)
{
if (!binding.IsSecondary && binding.CanOpenFile(filename))
{
if (binding.Binding != null && binding.Binding.CanCreateContentForFile(filename))
{
return(true);
}
}
return(false);
}
DisplayBindingDescriptor AddExternalProcessDisplayBindingInternal(ExternalProcessDisplayBinding binding)
{
externalProcessDisplayBindings.Add(binding);
DisplayBindingDescriptor descriptor = new DisplayBindingDescriptor(binding)
{
Id = binding.Id,
Title = binding.Title
};
bindings.Add(descriptor);
return(descriptor);
}
public DisplayBindingDescriptor AddExternalProcessDisplayBinding(ExternalProcessDisplayBinding binding)
{
SD.MainThread.VerifyAccess();
if (binding == null)
{
throw new ArgumentNullException("binding");
}
DisplayBindingDescriptor descriptor = AddExternalProcessDisplayBindingInternal(binding);
SaveExternalProcessDisplayBindings();
return(descriptor);
}
/// <summary>
/// Gets the primary display binding for the specified file name.
/// </summary>
public IDisplayBinding GetBindingPerFileName(FileName filename)
{
SD.MainThread.VerifyAccess();
if (FileUtility.IsUrl(filename))
{
// The normal display binding dispatching code can't handle URLs (e.g. because it uses Path.GetExtension),
// so we'll directly return the browser display binding.
return(GetBindingForUrl(filename));
}
DisplayBindingDescriptor codon = GetDefaultCodonPerFileName(filename);
return(codon == null ? null : codon.Binding);
}
void ProgramListBoxSelectedIndexChanged(object sender, EventArgs e)
{
DisplayBindingDescriptor binding = SelectedBinding;
if (binding != null)
{
okButton.Enabled = true;
setAsDefaultButton.Enabled = true;
removeButton.Enabled = binding.GetLoadedBinding() is ExternalProcessDisplayBinding;
}
else
{
okButton.Enabled = false;
setAsDefaultButton.Enabled = false;
removeButton.Enabled = false;
}
}
public void SetDefaultCodon(string extension, DisplayBindingDescriptor bindingDescriptor)
{
SD.MainThread.VerifyAccess();
if (bindingDescriptor == null)
{
throw new ArgumentNullException("bindingDescriptor");
}
if (extension == null)
{
throw new ArgumentNullException("extension");
}
if (!extension.StartsWith(".", StringComparison.Ordinal))
{
throw new ArgumentException("extension must start with '.'");
}
displayBindingServiceProperties.Set("Default" + extension.ToLowerInvariant(), bindingDescriptor.Id);
}
/// <summary>
/// Gets the default primary display binding for the specified file name.
/// </summary>
public DisplayBindingDescriptor GetDefaultCodonPerFileName(FileName filename)
{
SD.MainThread.VerifyAccess();
if (filename == null)
{
return(null);
}
string defaultCommandID = displayBindingServiceProperties.Get("Default" + Path.GetExtension(filename).ToLowerInvariant(), string.Empty);
if (!string.IsNullOrEmpty(defaultCommandID))
{
foreach (DisplayBindingDescriptor binding in bindings)
{
if (binding.Id == defaultCommandID)
{
if (IsPrimaryBindingValidForFileName(binding, filename))
{
return(binding);
}
}
}
}
DisplayBindingDescriptor autoDetectDescriptor = null;
foreach (DisplayBindingDescriptor binding in bindings)
{
if (IsPrimaryBindingValidForFileName(binding, filename))
{
if (binding.Binding.IsPreferredBindingForFile(filename))
{
return(binding);
}
if (binding.Binding is AutoDetectDisplayBinding)
{
autoDetectDescriptor = binding;
}
}
}
return(autoDetectDescriptor);
}
public ListEntry(DisplayBindingDescriptor desc, bool isDefault)
{
this.desc = desc;
this.IsDefault = isDefault;
}
static bool IsPrimaryBindingValidForFileName(DisplayBindingDescriptor binding, FileName filename)
{
if (!binding.IsSecondary && binding.CanOpenFile(filename)) {
if (binding.Binding != null && binding.Binding.CanCreateContentForFile(filename)) {
return true;
}
}
return false;
}
public void SetDefaultCodon(string extension, DisplayBindingDescriptor bindingDescriptor)
{
SD.MainThread.VerifyAccess();
if (bindingDescriptor == null)
throw new ArgumentNullException("bindingDescriptor");
if (extension == null)
throw new ArgumentNullException("extension");
if (!extension.StartsWith(".", StringComparison.Ordinal))
throw new ArgumentException("extension must start with '.'");
displayBindingServiceProperties.Set("Default" + extension.ToLowerInvariant(), bindingDescriptor.Id);
}
public ListEntry(DisplayBindingDescriptor desc, bool isDefault)
{
this.desc = desc;
this.IsDefault = isDefault;
}
