//public PropertyStep(
// Func<TDescriptor, IVMPropertyDescriptor> propertySelector,
// Type propertyHint
//) {
// Check.NotNull(propertySelector, nameof(propertySelector));
// _propertySelector = propertySelector;
// _propertyNameHint = String.Format("IVMPropertyDescriptor<{0}>", TypeService.GetFriendlyName(propertyHint));
//}
public override PathMatch Matches(PathDefinitionIterator definitionSteps, PathIterator step)
{
if (!step.HasStep || step.IsCollection || step.IsProperty)
{
return(PathMatch.Fail());
}
PathIterator parentStep = step;
step.MoveNext();
if (!step.HasStep)
{
return(PathMatch.Fail());
}
bool currentStepMatches = Matches(parentStep.ViewModel, step);
if (currentStepMatches)
{
PathMatch result = PathMatch.Succeed(length: 1);
PathMatch nextResult = definitionSteps.MatchesNext(step);
return(PathMatch.Combine(result, nextResult));
}
else
{
return(PathMatch.Fail());
}
}
public override PathMatch Matches(PathDefinitionIterator definitionSteps, PathIterator step)
{
if (!step.HasStep || step.IsCollection || step.IsProperty)
{
return(PathMatch.Fail());
}
int pathLength = 0;
PathIterator parentStep = step;
step.MoveNext();
pathLength++;
bool currentStepMatches = Matches(parentStep.ViewModel, step);
if (currentStepMatches)
{
while (step.HasStep)
{
step.MoveNext();
pathLength++;
}
return(PathMatch.Succeed(length: pathLength));
}
else
{
return(PathMatch.Fail());
}
}
public override PathMatch Matches(PathDefinitionIterator definitionSteps, PathIterator step)
{
if (!step.HasStep || !step.IsCollection)
{
return(PathMatch.Fail());
}
IVMCollection parentCollection = step.Collection;
step.MoveNext();
if (!step.HasStep || !step.IsProperty)
{
return(PathMatch.Fail());
}
if (!(parentCollection.GetItemDescriptor() is TDescriptor))
{
return(PathMatch.Fail());
}
var itemDescriptor = parentCollection.GetItemDescriptor();
var expectedProperty = _propertySelector.GetProperty(itemDescriptor);
if (expectedProperty == step.Property)
{
PathMatch result = PathMatch.Succeed(length: 1);
PathMatch nextResult = definitionSteps.MatchesNext(step);
return(PathMatch.Combine(result, nextResult));
}
return(PathMatch.Fail());
}
public override IViewModel[] GetDescendants(
PathDefinitionIterator definitionSteps,
IViewModel rootVM,
bool onlyLoaded
)
{
throw new NotSupportedException();
}
public override IViewModel[] GetDescendants(
PathDefinitionIterator definitionSteps,
IViewModel rootVM,
bool onlyLoaded
)
{
return(new IViewModel[] { rootVM });
}
public override PathMatch Matches(PathDefinitionIterator definitionSteps, PathIterator step)
{
foreach (var orStep in _steps)
{
var match = orStep.Matches(definitionSteps, step);
if (match.Success)
{
return(match);
}
}
return(PathMatch.Fail());
}
public override PathMatch Matches(PathDefinitionIterator definitionSteps, PathIterator step)
{
var match = _innerStep.Matches(definitionSteps, step);
if (match.Success)
{
return(match);
}
else
{
return(definitionSteps.MatchesNext(step));
}
}
public override PathMatch Matches(PathDefinitionIterator definitionSteps, PathIterator step)
{
int matchedSteps = 0;
if (step.HasStep)
{
step.MoveNext();
matchedSteps++;
}
return(step.HasStep ?
PathMatch.Fail() :
PathMatch.Succeed(length: matchedSteps));
}
public override PathMatch Matches(PathDefinitionIterator definitionSteps, PathIterator step)
{
if (!step.HasStep || !step.IsViewModel)
{
return(PathMatch.Fail());
}
IViewModel parentViewModel = step.ViewModel;
step.MoveNext();
if (!step.HasStep || !step.IsCollection)
{
return(PathMatch.Fail());
}
if (!(parentViewModel.Descriptor is TDescriptor))
{
return(PathMatch.Fail());
}
var descriptor = (TDescriptor)parentViewModel.Descriptor;
var collectionProperty = (IVMPropertyDescriptor)_propertySelector.GetProperty(descriptor); // HACK ATTACK
if (!parentViewModel.Kernel.IsLoaded(collectionProperty))
{
return(PathMatch.Fail());
}
var expectedCollection = parentViewModel.Kernel.GetValue(collectionProperty);
if (step.Collection == expectedCollection)
{
PathMatch result = PathMatch.Succeed(length: 1);
PathMatch nextResult = definitionSteps.MatchesNext(step);
return(PathMatch.Combine(result, nextResult));
}
else
{
return(PathMatch.Fail());
}
}
public override IViewModel[] GetDescendants(
PathDefinitionIterator definitionSteps,
IViewModel rootVM,
bool onlyLoaded
)
{
var property = _propertySelector.GetProperty(rootVM.Descriptor);
if (onlyLoaded && !rootVM.Kernel.IsLoaded(property))
{
return(new IViewModel[0]);
}
var instance = rootVM.Kernel.GetValue(property);
if (PropertyTypeHelper.IsViewModelCollection(property.PropertyType))
{
if (instance == null)
{
return(new IViewModel[0]);
}
var collection = (IVMCollection)instance;
return(((IVMCollection)instance)
.Cast <IViewModel>()
.SelectMany(x => definitionSteps.GetDescendantNext(x, onlyLoaded))
.ToArray());
}
else if (PropertyTypeHelper.IsViewModel(property.PropertyType))
{
if (instance == null)
{
return(new IViewModel[0]);
}
return(definitionSteps.GetDescendantNext((IViewModel)instance, onlyLoaded));
}
throw new NotSupportedException(ExceptionTexts.GetDescaedantsWrongPropertyStepType);
}
public IViewModel[] GetLoadedDescendants(IViewModel rootVM)
{
var it = new PathDefinitionIterator(_steps);
return(it.GetDescendantNext(rootVM, onlyLoaded: true));
}
public PathMatch Matches(Path path)
{
var it = new PathDefinitionIterator(_steps);
return(it.MatchesNext(path.GetIterator()));
}
public abstract IViewModel[] GetDescendants(PathDefinitionIterator definitionSteps, IViewModel rootVM, bool onlyLoaded);
public abstract PathMatch Matches(PathDefinitionIterator definitionSteps, PathIterator step);
