public static void ToXmlReturnsNewXElement()
{
var element = new XElement("Tjoho");
var fragment = SourceFragment.FromXml(element);
Assert.AreNotEqual(element, fragment.ToXml());
}
public static void ToXmlIsRoundtripInvariant()
{
var fragmentXml = Fragment.ToXml();
var trippedFragment = SourceFragment.FromXml(fragmentXml);
Assert.AreEqual(Fragment, trippedFragment);
}
public void Mutate(AbsoluteFilePath file, int iterations)
{
var element = SourceFragment.FromString(File.ReadAllText(file.NativePath)).ToXml();
for (int i = 0; i < iterations; i++)
{
Mutate(element);
}
File.WriteAllText(file.NativePath, SourceFragment.FromXml(element).ToString());
}
public Task <SourceFragment> Copy()
{
var fragment = SourceFragment.FromXml(Element);
string elementIndent;
if (Element.TryGetElementIndent(out elementIndent))
{
fragment = RemoveIndentFromDescendantNodes(fragment, elementIndent);
}
return(Task.FromResult(fragment));
}
async Task ExtractClassToFile(IElement element, string name, RelativeFilePath fileName)
{
var xml = (await element.Copy()).ToXml();
xml.SetAttributeValue(KeyToName("ux:Class"), name);
await _project.CreateDocument(fileName, SourceFragment.FromXml(xml));
// Don't replace original element before new class is loaded
await _project.Classes
.WherePerElement(x => x.UxClass().Is(name))
.Where(x => x.Any())
.FirstAsync()
.Timeout(TimeSpan.FromSeconds(2));
await element.Replace(_ => Task.FromResult(SourceFragment.FromString(string.Format("<{0} />", name))));
}
public static LiveDocument Open(
AbsoluteFilePath path,
IFileSystem fs,
IObservable <ILookup <ObjectIdentifier, ObjectIdentifier> > metadata,
BehaviorSubject <Dictionary <ObjectIdentifier, IElement> > idToElement,
IObserver <IBinaryMessage> mutations,
IScheduler scheduler)
{
IDocument <byte[]> fileOnDisk = new FileWatchingDocument(fs, path);
var parsingErrors = new BehaviorSubject <Optional <Exception> >(Optional.None());
var invalidated = new Subject <Unit>();
var root = new LiveElement(
file: path,
metadata: metadata,
isReadOnly: fileOnDisk.ErrorsDuringLoading.Or(parsingErrors)
.Select(e => e.HasValue)
.DistinctUntilChanged()
.Replay(1).RefCount(),
invalidated: invalidated,
mutations: mutations,
getElement: id =>
idToElement.Value.TryGetValue(id).Or(Element.Empty));
Optional <XElement> xElementForSaving = Optional.None <XElement>();
var allElements = root.Subtree().Replay(1);
var source = new ReplaySubject <SourceFragment>(1);
return(new LiveDocument
{
_garbage = Disposable.Combine(
// Save on internal changes
invalidated
.Select(_ =>
{
if (xElementForSaving.HasValue)
{
var sourceFragment = SourceFragment.FromXml(xElementForSaving.Value);
source.OnNext(sourceFragment);
return Optional.Some(sourceFragment);
}
return Optional.None();
})
.NotNone()
.Throttle(TimeSpan.FromSeconds(0.5), scheduler)
.Select(sourceFragment =>
Observable.FromAsync(async() =>
await fileOnDisk.Save(sourceFragment.ToBytes())))
.Concat()
.Subscribe(),
// Load on external changes
fileOnDisk.ExternalChanges
.ObserveOn(Application.MainThread)
.Subscribe(reload =>
{
var sourceFragment = SourceFragment.FromBytes(reload);
source.OnNext(sourceFragment);
try
{
var simulatorWasFaulted = parsingErrors.Value.HasValue;
var newDocument = sourceFragment.ToXml();
parsingErrors.OnNext(Optional.None());
xElementForSaving = Optional.None();
Console.WriteLine("Reloading " + path + " from disk...");
root.UpdateFrom(newDocument); // no known reasons to throw
xElementForSaving = Optional.Some(newDocument);
// hack to clear errors from the simulator,
// since UpdateFrom() doesn't know that the simulator
// have failed and will try to emit incremental updates
if (simulatorWasFaulted)
{
mutations.OnNext(new ReifyRequired());
}
}
catch (Exception e)
{
parsingErrors.OnNext(e);
// hack to get errors from the simulator
mutations.OnNext(new ReifyRequired());
}
}),
// Share subscription to Eleements
allElements.Connect(),
// Dispose fileOnDisk when disposed
fileOnDisk),
FilePath = Observable.Return(path),
Errors = fileOnDisk.Errors.Or(parsingErrors),
SimulatorIdPrefix = path.NativePath,
Source = source,
Root = root,
Elements = allElements,
_root = root,
_path = path,
_idToElement = idToElement,
});
}