// TODO: Implement Create Collection With No Value.
public override ICProp <CT, T> CreateWithNoValue <CT, T>(
PropNameType propertyName, object extraInfo = null,
PropStorageStrategyEnum storageStrategy = PropStorageStrategyEnum.Internal, bool typeIsSolid = true,
Func <CT, CT, bool> comparer = null)
{
throw new NotImplementedException("PropExtStoreFactory has not implemented the Create Collection Prop with No Value.");
}
//public virtual IProp CreateGenFromString(Type typeOfThisProperty,
// string value, bool useDefault,
// PropNameType propertyName, object extraInfo,
// PropStorageStrategyEnum storageStrategy, bool isTypeSolid, PropKindEnum propKind,
// Delegate comparer, bool useRefEquality = false, Type itemType = null)
//{
// MemConsumptionTracker mct = new MemConsumptionTracker(enabled: false);
// if (propKind == PropKindEnum.Prop)
// {
// CreateScalarProp propCreator = GetPropCreator(typeOfThisProperty);
// mct.MeasureAndReport("GetPropCreator", $"for {propertyName}");
// // TODO: This is where strings are parsed to create objects of type T.
// // TODO: This needs more work, to say the least.
// IProp prop = propCreator(this, haveValue: true, value: value, useDefault: useDefault, propertyName: propertyName,
// extraInfo: extraInfo, storageStrategy: storageStrategy, isTypeSolid: isTypeSolid,
// comparer: comparer, useRefEquality: useRefEquality, getDefaultValFunc: null);
// mct.MeasureAndReport("Ran propCreator to get IProp", $"for {propertyName}");
// return prop;
// }
// else if (propKind.IsCollection())
// {
// CreateCPropFromStringDelegate propCreator = GetCPropFromStringCreator(typeOfThisProperty, itemType);
// mct.MeasureAndReport("GetCPropFromStringCreator", $"for {propertyName}");
// IProp prop = propCreator(this, value: value, useDefault: useDefault, propertyName: propertyName,
// extraInfo: extraInfo, storageStrategy: storageStrategy, isTypeSolid: isTypeSolid,
// comparer: comparer, useRefEquality: useRefEquality);
// mct.MeasureAndReport("Ran GetCPropFromStringCreator to get IProp", $"for {propertyName}");
// return prop;
// }
// else
// {
// throw new InvalidOperationException($"PropKind = {propKind} is not recognized or is not supported.");
// }
//}
public virtual IProp CreateGenWithNoValue(Type typeOfThisProperty,
PropNameType propertyName, object extraInfo,
PropStorageStrategyEnum storageStrategy, bool isTypeSolid, PropKindEnum propKind,
Delegate comparer, bool useRefEquality = false, Type itemType = null)
{
MemConsumptionTracker mct = new MemConsumptionTracker(enabled: false);
if (propKind == PropKindEnum.Prop)
{
CreateScalarProp propCreator = GetPropCreator(typeOfThisProperty);
mct.MeasureAndReport("GetPropCreator", $"for {propertyName}");
IProp prop = propCreator(this, haveValue: false, value: null, useDefault: false, propertyName: propertyName,
extraInfo: extraInfo, storageStrategy: storageStrategy, isTypeSolid: isTypeSolid,
comparer: comparer, useRefEquality: useRefEquality, getDefaultValFunc: null);
mct.MeasureAndReport("Ran propCreator to get IProp", $"for {propertyName}");
return(prop);
}
else if (propKind.IsCollection())
{
CreateCPropWithNoValueDelegate propCreator = GetCPropWithNoValueCreator(typeOfThisProperty, itemType);
IProp prop = propCreator(this, propertyName: propertyName,
extraInfo: extraInfo, storageStrategy: storageStrategy, isTypeSolid: isTypeSolid,
comparer: comparer, useRefEquality: useRefEquality);
return(prop);
}
else
{
throw new InvalidOperationException($"PropKind = {propKind} is not recognized or is not supported.");
}
}
private bool UpdateTargetWithStartingValue(WeakRefKey <IPropBag> bindingTarget, PropNode sourcePropNode)
{
IProp typedProp = sourcePropNode.PropData_Internal.TypedProp;
PropStorageStrategyEnum ss = typedProp.PropTemplate.StorageStrategy;
switch (ss)
{
case PropStorageStrategyEnum.Internal:
{
T newValue = (T)typedProp.TypedValueAsObject;
bool result = UpdateTarget(bindingTarget, newValue);
return(result);
}
case PropStorageStrategyEnum.External:
goto case PropStorageStrategyEnum.Internal;
// This property has no backing store, there is no concept of a starting value.
case PropStorageStrategyEnum.Virtual:
return(false);
default:
throw new InvalidOperationException($"{ss} is not a recognized or supported Prop Storage Strategy when used as a source for a local binding.");
}
}
//Lazy<IValueConverter> _defaultConverter;
//public virtual Lazy<IValueConverter> DefaultConverter
//{
// get
// {
// if(_defaultConverter == null)
// {
// return new Lazy<IValueConverter>(() => new PropValueConverter());
// }
// return _defaultConverter;
// }
// set
// {
// _defaultConverter = value;
// }
//}
//Func<BindingTarget, MyBindingInfo, Type, string, object> _defConvParamBuilder;
//public virtual Func<BindingTarget, MyBindingInfo, Type, string, object> DefaultConverterParameterBuilder
//{
// get
// {
// if (_defConvParamBuilder == null)
// {
// return OurDefaultConverterParameterBuilder;
// }
// return _defConvParamBuilder;
// }
// set
// {
// _defConvParamBuilder = value;
// }
//}
#endregion
#region Constructor
internal LocalBinder(PSAccessServiceInterface propStoreAccessService, LocalBindingInfo bindingInfo, IReceivePropStoreNodeUpdates storeNodeUpdateReceiver)
{
_propStoreAccessService_wr = new WeakReference <PSAccessServiceInterface>(propStoreAccessService);
_bindingInfo = bindingInfo;
_storeNodeUpdateReceiver = storeNodeUpdateReceiver;
_bindingTarget = new SimpleExKey();
// Get the PropStore Node for the IPropBag object hosting the property that is the target of the binding.
// TODO: Instead of doing this now, create a property that allows us to access upon first access.
_ourNode = GetPropBagNode(propStoreAccessService);
_targetObject = null;
_propertyName = null;
_targetHasStore = PropStorageStrategyEnum.Virtual;
_pathElements = GetPathElements(_bindingInfo, out _isPathAbsolute, out _firstNamedStepIndex);
if (_isPathAbsolute)
{
_rootListener = CreateAndListen(_ourNode, "root", SourceKindEnum.AbsRoot);
}
else
{
_rootListener = null;
}
_pathListeners = new OSCollection <T>();
_isComplete = StartBinding(_targetObject, _pathElements, _pathListeners, _isPathAbsolute);
}
// Complete
public PropItemModel
(
Type type,
string name,
PropStorageStrategyEnum storageStrategy,
bool typeIsSolid,
PropKindEnum propKind,
ITypeInfoField propTypeInfoField,
IPropInitialValueField initialValueField,
object extraInfo,
IPropComparerField comparer,
Type itemType,
IPropBinderField binderField,
IMapperRequest mapperRequest,
PropCreatorType propCreator
)
{
PropertyType = type;
PropertyName = name;
ExtraInfo = extraInfo;
StorageStrategy = storageStrategy;
TypeIsSolid = typeIsSolid;
PropKind = propKind;
PropTypeInfoField = _propTypeInfoField;
InitialValueField = initialValueField;
ComparerField = comparer;
_itemType = itemType;
_propBinderField = binderField;
_mapperRequest = mapperRequest;
_propCreator = propCreator;
InitialValueCooked = null;
}
// With No Value
private static ICProp <CT, T> CreateCPropWithNoValue <CT, T>(IPropFactory propFactory,
bool useDefault,
PropNameType propertyName, object extraInfo,
PropStorageStrategyEnum storageStrategy, bool isTypeSolid,
Delegate comparer, bool useRefEquality = true) where CT : class, IReadOnlyList <T>, IList <T>, IEnumerable <T>, IList, IEnumerable, INotifyCollectionChanged, INotifyPropertyChanged
{
return(propFactory.CreateWithNoValue <CT, T>(propertyName, extraInfo, storageStrategy, isTypeSolid,
GetComparerForCollections <CT>(comparer, propFactory, useRefEquality)));
}
// TODO: Implement Create Collection With Initial Value.
public override ICProp <CT, T> Create <CT, T>(
CT initialValue,
PropNameType propertyName,
object extraInfo,
PropStorageStrategyEnum storageStrategy,
bool typeIsSolid,
Func <CT, CT, bool> comparer)
{
throw new NotImplementedException("PropExtStoreFactory has not implemented the Create Collection Prop with Initial Value.");
}
public abstract IProp <T> CreateWithNoValue <T>
(
PropNameType propertyName,
object extraInfo,
PropStorageStrategyEnum storageStrategy,
bool typeIsSolid,
Func <T, T, bool> comparer,
bool comparerIsRefEquality,
Func <string, T> getDefaultValFunc
);
// From Object
private static ICProp <CT, T> CreateCPropFromObject <CT, T>(IPropFactory propFactory,
object value,
string propertyName, object extraInfo,
PropStorageStrategyEnum storageStrategy, bool isTypeSolid,
Delegate comparer, bool useRefEquality = false) where CT : class, IReadOnlyList <T>, IList <T>, IEnumerable <T>, IList, IEnumerable, INotifyCollectionChanged, INotifyPropertyChanged
{
CT initialValue = propFactory.GetValueFromObject <CT>(value);
return(propFactory.Create <CT, T>(initialValue, propertyName, extraInfo, storageStrategy, isTypeSolid,
GetComparerForCollections <CT>(comparer, propFactory, useRefEquality)));
}
//public override ClrMappedDSP<TDestination> CreateMappedDS<TSource, TDestination>(uint propId, PropKindEnum propKind, IDoCRUD<TSource> dal, IPropStoreAccessService<uint, string> storeAccesor, IPropBagMapper<TSource, TDestination> mapper)
//{
// throw new NotImplementedException();
//}
#endregion
#region Scalar Prop Creation
public override IProp <T> Create <T>(
T initialValue,
PropNameType propertyName,
object extraInfo,
PropStorageStrategyEnum storageStrategy,
bool typeIsSolid,
Func <T, T, bool> comparer,
bool comparerIsRefEquality,
Func <string, T> getDefaultValFunc)
{
throw new InvalidOperationException("External Store Factory doesn't know how to create properties with initial values.");
}
public XMLPropItemModel(string type, string name,
string extraInfo = null, PropStorageStrategyEnum storageStrategy = PropStorageStrategyEnum.Internal,
bool typeIsSolid = true,
PropDoWhenChanged doWhenChanged = null, PropComparerField comparer = null)
{
Type = type;
Name = name;
ExtraInfo = extraInfo;
StorageStrategy = storageStrategy;
TypeIsSolid = typeIsSolid;
ComparerField = comparer;
DoWhenChangedField = doWhenChanged;
}
protected virtual IPropTemplate <T> GetPropTemplate <T>
(
PropKindEnum propKindEnum,
PropStorageStrategyEnum storageStrategy,
Func <T, T, bool> comparer,
bool comparerIsRefEquality,
Func <string, T> getDefaultVal
)
{
// Supply a comparer, if one was not supplied by the caller.
bool comparerIsDefault;
if (comparer == null)
{
comparer = EqualityComparer <T> .Default.Equals;
comparerIsDefault = true;
}
else
{
comparerIsDefault = false;
}
bool defaultValFuncIsDefault;
// Use the Get Default Value function supplied or provided by this Prop Factory.
if (getDefaultVal == null)
{
getDefaultVal = ValueConverter.GetDefaultValue <T>;
defaultValFuncIsDefault = true;
}
else
{
defaultValFuncIsDefault = false;
}
IPropTemplate <T> propTemplateTyped = new PropTemplateTyped <T>
(
propKindEnum,
storageStrategy,
this.GetType(),
comparerIsDefault,
comparerIsRefEquality,
comparer,
getDefaultVal,
defaultValFuncIsDefault
);
IPropTemplate <T> existingEntry = (IPropTemplate <T>)DelegateCacheProvider.PropTemplateCache.GetOrAdd(propTemplateTyped);
return(existingEntry);
}
public override IProp <T> CreateWithNoValue <T>
(
PropNameType propertyName,
object extraInfo,
PropStorageStrategyEnum storageStrategy,
bool typeIsSolid,
Func <T, T, bool> comparer,
bool comparerIsRefEquality,
Func <string, T> getDefaultValFunc
)
{
IPropTemplate <T> propTemplate = GetPropTemplate <T>(PropKindEnum.Prop, storageStrategy, comparer, comparerIsRefEquality, getDefaultValFunc);
IProp <T> prop;
switch (storageStrategy)
{
case PropStorageStrategyEnum.Internal:
{
// Regular Prop with Internal Storage -- Just don't have a value as yet.
prop = new Prop <T>(propertyName, typeIsSolid, propTemplate);
break;
}
case PropStorageStrategyEnum.External:
{
// Create a Prop that uses an external storage source.
prop = new PropExternStore <T>(propertyName, extraInfo, typeIsSolid, propTemplate);
break;
}
case PropStorageStrategyEnum.Virtual:
{
// This is a Prop that supplies a Virtual (aka Caclulated) value from an internal source or from LocalBindings
// This implementation simply creates a Property that will always have the default value for type T.
prop = new PropNoStore <T>(propertyName, typeIsSolid, propTemplate);
break;
}
default:
{
throw new InvalidOperationException($"{storageStrategy} is not supported or is not recognized.");
}
}
return(prop);
}
public override ICProp <CT, T> CreateWithNoValue <CT, T>
(
PropNameType propertyName,
object extraInfo,
PropStorageStrategyEnum storageStrategy,
bool typeIsSolid,
Func <CT, CT, bool> comparer
)
{
// TODO: Get a real value for comparerIsReqEquality
bool comparerIsRefEquality = false;
IPropTemplate <CT> propTemplate = GetPropTemplate <CT>(PropKindEnum.ObservableCollection, storageStrategy, comparer, comparerIsRefEquality, getDefaultVal: null);
ICProp <CT, T> prop = new CProp <CT, T>(propertyName, typeIsSolid, propTemplate);
return(prop);
}
public PropTemplateTyped(PropKindEnum propKind, PropStorageStrategyEnum storageStrategy,
Type propFactoryType, bool comparerIsDefault, bool comparerIsRefEquality,
Func <T, T, bool> comparer, Func <string, T> defaultValFunc, bool defaultValFuncIsDefault)
{
PropKind = propKind;
Type = typeof(T);
StorageStrategy = storageStrategy;
Attributes = new Attribute[] { };
ComparerIsDefault = comparerIsDefault;
ComparerIsRefEquality = comparerIsRefEquality;
Comparer = comparer;
GetDefaultVal = defaultValFunc;
PropFactoryType = propFactoryType;
_hashCode = ComputetHashCode();
}
public PropDefRaw(PropCreateMethodEnum ct,
PropStorageStrategyEnum storageStrategy, bool typeIsSolid,
bool useRefEquality,
string type, string name, string doWhenChanged, bool doAfterNotify, string comparer,
string extraInfo, string initialValue = null)
{
CreateType = ct;
StorageStrategy = storageStrategy;
TypeIsSolid = typeIsSolid;
UseRefEquality = useRefEquality;
PropType = type;
PropName = name;
DoWhenChanged = DoWhenChanged;
DoAfterNotify = doAfterNotify;
Comparer = comparer;
ExtraInfo = extraInfo;
InitialValue = initialValue;
}
//// CollectionViewSource
//private static IProp CreateCVSProp(IPropFactory propFactory, PropNameType propertyName, IProvideAView viewProvider, IPropTemplate propTemplate)
//{
// return propFactory.CreateCVSProp(propertyName, viewProvider, propTemplate);
//}
//// CollectionView
//private static IProp CreateCVProp(IPropFactory propFactory, PropNameType propertyName, IProvideAView viewProvider, IPropTemplate propTemplate)
//{
// return propFactory.CreateCVProp(propertyName, viewProvider, propTemplate);
//}
#endregion
#region DataSource creators
//// TODO: replace IPropBagMapperGen with a IMapperRequest.
//// So that the Mapper gets created only if it's needed.
//private static IProvideADataSourceProvider CreateMappedDSPProvider<TSource, TDestination>
// (
// IPropFactory propFactory,
// PropIdType propId,
// PropKindEnum propKind,
// object genDal, // presumably, the value of the propItem.
// PSAccessServiceInterface propStoreAccessService,
// IPropBagMapperGen genMapper //, out CrudWithMapping<TSource, TDestination> mappedDs
// ) where TSource : class where TDestination : INotifyItemEndEdit
//{
// // Cast the genDal object back to it's original type.
// IDoCRUD<TSource> dal = (IDoCRUD<TSource>)genDal;
// // Cast the genMapper to it's typed-counterpart (All genMappers also implement IPropBagMapper<TS, TD>
// IPropBagMapper<TSource, TDestination> mapper = (IPropBagMapper<TSource, TDestination>)genMapper;
// // Now that we have performed the type casts, we can call the propFactory using "compile-time" type parameters.
// ClrMappedDSP<TDestination> mappedDSP = propFactory.CreateMappedDS<TSource, TDestination>(propId, propKind, dal, propStoreAccessService, mapper);
// //IProvideADataSourceProvider result = mappedDSP;
// return mappedDSP; // result;
//}
//private static ClrMappedDSP<TDestination> CreateMappedDS_Typed<TSource, TDestination>
// (
// IPropFactory propFactory,
// PropIdType propId,
// PropKindEnum propKind,
// IDoCRUD<TSource> dal,
// PSAccessServiceInterface propStoreAccessService,
// IPropBagMapper<TSource, TDestination> mapper //, out CrudWithMapping<TSource, TDestination> mappedDs
// ) where TSource : class where TDestination : INotifyItemEndEdit
//{
// ClrMappedDSP<TDestination> result = propFactory.CreateMappedDS<TSource, TDestination>(propId, propKind, dal, propStoreAccessService, mapper);
// //mappedDs = null;
// return result;
//}
#endregion
#region Scalar Prop Creation
// From Object
private static IProp <T> CreateProp <T>
(
IPropFactory propFactory,
bool haveValue,
object value,
bool useDefault,
PropNameType propertyName,
object extraInfo,
PropStorageStrategyEnum storageStrategy,
bool isTypeSolid,
Delegate comparer,
bool useRefEquality,
Delegate getDefaultValFunc
)
{
Func <T, T, bool> comparerToUse = GetComparerForProps <T>(comparer, propFactory, useRefEquality);
// If the caller did not provide a function used to get the default value, use the default-value-getter provided by the factory.
Func <string, T> getDefaultValFuncToUse = (Func <string, T>)getDefaultValFunc ?? propFactory.ValueConverter.GetDefaultValue <T>;
if (haveValue || useDefault)
{
T initialValue;
if (useDefault)
{
initialValue = getDefaultValFuncToUse(propertyName);
}
else
{
// TODO: the caller must provide this function the prop factory is not responsible for this.
// The InitialValueField from the PropModel has a Func<object> property that the caller can use.
initialValue = propFactory.GetValueFromObject <T>(value);
}
return(propFactory.Create(initialValue, propertyName, extraInfo, storageStrategy, isTypeSolid,
comparerToUse, useRefEquality, getDefaultValFuncToUse));
}
else
{
return(propFactory.CreateWithNoValue <T>(propertyName, extraInfo, storageStrategy, isTypeSolid,
comparerToUse, useRefEquality, getDefaultValFuncToUse));
}
}
// Type, Name, StorageStrategy, Kinde and Initial Value -- With ItemType
public PropItemModel(Type type, string name, PropStorageStrategyEnum storageStrategy,
PropKindEnum propKind, IPropInitialValueField initialValueField, Type itemType)
: this
(
type : type,
name : name,
storageStrategy : storageStrategy,
typeIsSolid : true,
propKind : propKind,
propTypeInfoField : null,
initialValueField : initialValueField,
extraInfo : null,
comparer : null,
itemType : itemType,
binderField : null,
mapperRequest : null,
propCreator : null
)
{
}
public override IProp <T> Create <T>
(
T initialValue,
PropNameType propertyName,
object extraInfo,
PropStorageStrategyEnum storageStrategy,
bool typeIsSolid,
Func <T, T, bool> comparer,
bool comparerIsRefEquality,
Func <string, T> getDefaultValFunc
)
{
IPropTemplate <T> propTemplate = GetPropTemplate <T>(PropKindEnum.Prop, storageStrategy, comparer, comparerIsRefEquality, getDefaultValFunc);
propTemplate.PropCreator = CookedScalarPropCreator <T>;
IProp <T> prop = new Prop <T>(propertyName, initialValue, typeIsSolid, propTemplate);
return(prop);
}
//Lazy<IValueConverter> _defaultConverter;
//public virtual Lazy<IValueConverter> DefaultConverter
//{
// get
// {
// if(_defaultConverter == null)
// {
// return new Lazy<IValueConverter>(() => new PropValueConverter());
// }
// return _defaultConverter;
// }
// set
// {
// _defaultConverter = value;
// }
//}
//Func<BindingTarget, MyBindingInfo, Type, string, object> _defConvParamBuilder;
//public virtual Func<BindingTarget, MyBindingInfo, Type, string, object> DefaultConverterParameterBuilder
//{
// get
// {
// if (_defConvParamBuilder == null)
// {
// return OurDefaultConverterParameterBuilder;
// }
// return _defConvParamBuilder;
// }
// set
// {
// _defConvParamBuilder = value;
// }
//}
#endregion
#region Constructor
public LocalBinder(PSAccessServiceInterface propStoreAccessService, ExKeyT bindingTarget, LocalBindingInfo bindingInfo)
{
_bindingTarget = bindingTarget;
_bindingInfo = bindingInfo;
// Get the PropStore Node for the IPropBag object hosting the property that is the target of the binding.
BagNode ourNode = GetPropBagNode(propStoreAccessService);
// Get a weak reference to the PropBag hosting the target property.
_targetObject = ourNode.PropBagProxy;
// Get the name of the target property from the PropId given to us.
if (_targetObject.TryGetTarget(out IPropBag propBag))
{
PropIdType propId = _bindingTarget.Level2Key;
_propertyName = GetPropertyName(propStoreAccessService, propBag, propId, out PropStorageStrategyEnum storageStrategy);
if (storageStrategy == PropStorageStrategyEnum.External)
{
throw new InvalidOperationException($"{storageStrategy} is not a supported Prop Storage Strategy when used as a target of a local binding.");
}
// We will update the target property depending on how that PropItem stores its value.
_targetStorageStrategy = storageStrategy;
// Create a instance of our nested, internal class that reponds to Updates to the property store Nodes.
IReceivePropStoreNodeUpdates_PropNode <T> propStoreNodeUpdateReceiver = new PropStoreNodeUpdateReceiver(this);
// Create a new watcher, the bindingInfo specifies the PropItem for which to listen to changes,
// the propStoreNodeUpdateReceiver will be notfied when changes occur.
_localWatcher = new LocalWatcher <T>(propStoreAccessService, bindingInfo, propStoreNodeUpdateReceiver);
}
else
{
// TODO: consider creating a TryCreateLocalBinding to avoid this situation.
System.Diagnostics.Debug.WriteLine("The target was found to have been Garbage Collected when creating a Local Binding.");
}
}
public override IProp <T> CreateWithNoValue <T>
(
PropNameType propertyName,
object extraInfo,
PropStorageStrategyEnum storageStrategy,
bool typeIsSolid,
Func <T, T, bool> comparer,
bool comparerIsRefEquality,
Func <string, T> getDefaultValFunc
)
{
IPropTemplate <T> propTemplate = GetPropTemplate <T>(PropKindEnum.Prop, storageStrategy, comparer, comparerIsRefEquality, getDefaultValFunc);
if (storageStrategy == PropStorageStrategyEnum.Internal)
{
propTemplate.PropCreator = CookedScalarPropCreatorNoVal <T>;
}
else
{
propTemplate.PropCreator = CookedScalarPropCreatorNoStore <T>;
}
if (storageStrategy == PropStorageStrategyEnum.Internal)
{
// Regular Prop with Internal Storage -- Just don't have a value as yet.
IProp <T> prop = new Prop <T>(propertyName, typeIsSolid, propTemplate);
return(prop);
}
else
{
// Prop With External Store, or this is a Prop that supplies a Virtual (aka Caclulated) value from an internal source or from LocalBindings
// This implementation simply creates a Property that will always have the default value for type T.
IProp <T> prop = new PropNoStore <T>(propertyName, typeIsSolid, propTemplate);
return(prop);
}
}
public LocalBinder(PSAccessServiceInterface propStoreAccessService, ExKeyT ownerPropId, LocalBindingInfo bindingInfo)
{
_propStoreAccessService_wr = new WeakReference <PSAccessServiceInterface>(propStoreAccessService);
_bindingTarget = ownerPropId;
_bindingInfo = bindingInfo;
_storeNodeUpdateReceiver = null;
// Get the PropStore Node for the IPropBag object hosting the property that is the target of the binding.
_ourNode = GetPropBagNode(propStoreAccessService);
PropIdType propId = _bindingTarget.Level2Key;
_targetObject = _ourNode.PropBagProxy;
if (_targetObject.TryGetTarget(out IPropBagInternal propBag))
{
_propertyName = GetPropertyName(propStoreAccessService, propBag, propId, out PropStorageStrategyEnum storageStrategy);
_targetHasStore = storageStrategy;
}
_pathElements = GetPathElements(_bindingInfo, out _isPathAbsolute, out _firstNamedStepIndex);
if (_isPathAbsolute)
{
_rootListener = CreateAndListen(_ourNode, "root", SourceKindEnum.AbsRoot);
}
else
{
_rootListener = null;
}
_pathListeners = new OSCollection <T>();
_isComplete = StartBinding(_targetObject, _pathElements, _pathListeners, _isPathAbsolute);
}
private IPropItemModel ProcessProp(IPropTemplateItem pi, DoWhenChangedHelper doWhenChangedHelper)
{
PropStorageStrategyEnum storageStrategy = pi.StorageStrategy;
bool typeIsSolid = pi.TypeIsSolid;
string extraInfo = pi.ExtraInfo;
IPropItemModel rpi = new PropItemModel
(
type: pi.PropertyType,
name: pi.PropertyName,
storageStrategy: storageStrategy,
typeIsSolid: typeIsSolid,
propKind: pi.PropKind,
propTypeInfoField: null,
initialValueField: null,
extraInfo: extraInfo,
comparer: null,
itemType: null,
binderField: null,
mapperRequest: null,
propCreator: null
);
bool isCProp = pi.PropKind.IsCollection();
bool foundTypeInfoField = false;
ItemCollection items = ((PropItem)pi).Items;
foreach (Control uc in items)
{
// ToDo: Find and process this field first, and then enter the enclosing foreach loop.
// because one day, some of the other processing may depend on the PropertyType.
// Type Info Field
if (uc is DRM.PropBagControlsWPF.TypeInfoField tif)
{
foundTypeInfoField = true;
Type propertyType = GetTypeFromInfoField(tif, pi.PropKind, pi.PropertyType, out Type itemType);
if (isCProp)
{
rpi.CollectionType = propertyType;
rpi.ItemType = itemType;
}
else
{
rpi.PropertyType = propertyType;
rpi.ItemType = null;
}
}
// Initial Value Field
else if (uc is InitialValueField ivf)
{
IPropInitialValueField rivf;
// TODO: Add error handling here.
if (ivf.PropBagFullClassName != null)
{
rivf = PropInitialValueField.FromPropBagFCN(ivf.PropBagFullClassName);
}
else if (ivf.CreateNew)
{
rivf = PropInitialValueField.UseCreateNew;
}
else
{
rivf = new PropInitialValueField(ivf.InitialValue, ivf.SetToDefault, ivf.SetToUndefined,
ivf.SetToNull, ivf.SetToEmptyString);
}
rpi.InitialValueField = rivf;
}
// Do When Changed Field
else if (uc is DRM.PropBagControlsWPF.PropDoWhenChangedField dwc)
{
MethodInfo mi = doWhenChangedHelper.GetMethodAndSubKind(dwc, rpi.PropertyType, rpi.PropertyName, out SubscriptionKind subscriptionKind);
SubscriptionPriorityGroup priorityGroup = dwc?.DoAfterNotify ?? false ? SubscriptionPriorityGroup.Last : SubscriptionPriorityGroup.Standard;
IPropDoWhenChangedField rdwc = new DRM.PropBag.PropDoWhenChangedField
(
target: null, method: mi,
subscriptionKind: subscriptionKind, priorityGroup: priorityGroup,
methodIsLocal: true, declaringType: null,
fullClassName: null, instanceKey: null
);
rpi.DoWhenChangedField = rdwc;
}
// Comparer Field
else if (uc is DRM.PropBagControlsWPF.PropComparerField pcf)
{
IPropComparerField rpcf = new PropBag.PropComparerField(pcf.ComparerFunc.Comparer, pcf.UseRefEquality);
rpi.ComparerField = rpcf;
}
// Local Binder Field
else if (uc is DRM.PropBagControlsWPF.PropBinderField binderField)
{
IPropBinderField rBinderField = new PropBag.PropBinderField(binderField.Path);
rpi.BinderField = rBinderField;
rpi.MapperRequestResourceKey = binderField.MapperRequestResourceKey;
}
}
if (!foundTypeInfoField)
{
if (isCProp)
{
Type propertyType = GetTypeFromInfoField(null, pi.PropKind, pi.PropertyType, out Type itemType);
rpi.CollectionType = propertyType;
rpi.ItemType = itemType;
}
else if (pi.PropKind == PropKindEnum.CollectionView)
{
rpi.PropertyType = typeof(ListCollectionView);
rpi.CollectionType = rpi.PropertyType;
rpi.ItemType = pi.PropertyType;
}
else
{
// TODO: Check other PropKinds.
// Do Nothing.
}
}
return(rpi);
}
// TODO: should be able to have IPropStoreAccessServiceInternal provide all of this with a single call.
private PropNameType GetPropertyName(PSAccessServiceInterface propStoreAccessService, IPropBag propBag, PropIdType propId, out PropStorageStrategyEnum storageStrategy)
{
PropNameType result;
if (propStoreAccessService.TryGetPropName(propId, out PropNameType propertyName))
{
result = propertyName;
}
else
{
throw new InvalidOperationException("Cannot retrieve the Target's property name from the TargetPropId.");
}
if (propStoreAccessService.TryGetValue(propBag, propId, out IPropData genProp))
{
storageStrategy = genProp.TypedProp.PropTemplate.StorageStrategy;
}
else
{
throw new InvalidOperationException("Cannot retrieve the Target's property name from the TargetPropId.");
}
return(result);
}
public abstract ICProp <CT, T> Create <CT, T>(
CT initialValue,
PropNameType propertyName, object extraInfo = null,
PropStorageStrategyEnum storageStrategy = PropStorageStrategyEnum.Internal, bool typeIsSolid = true,
Func <CT, CT, bool> comparer = null) where CT : class, IReadOnlyList <T>, IList <T>, IEnumerable <T>, IList, IEnumerable, INotifyCollectionChanged, INotifyPropertyChanged;