void AddCollectionBinding(CollectionPresenter collectionPresenter, string sourcePropName)
{
OneWayCollectionValueBindingWithPath<Person, IPresentationTreeNode, IEnumerable<Person>, ObservableCollection<IPresentationTreeNode>> collectionFieldBinding =
new OneWayCollectionValueBindingWithPath<Person, IPresentationTreeNode, IEnumerable<Person>, ObservableCollection<IPresentationTreeNode>>();
collectionFieldBinding.SourceObj = TheClass;
collectionFieldBinding.SourcePathLinks = new List<BindingPathLink<object>>
{
new BindingPathLink<object>(sourcePropName)
};
collectionFieldBinding.TargetObj = collectionPresenter;
collectionFieldBinding.TargetPathLinks = new List<BindingPathLink<object>>
{
new BindingPathLink<object>("ObservableChildren")
};
collectionFieldBinding.SourceToTargetDelegate = GetPersonMap;
collectionFieldBinding.Bind();
TheBindingsAProp.SetProperty(collectionPresenter, collectionFieldBinding);
}
static void Main(string[] args)
{
#region pure collection binding
//ObservableCollection<int> sourceCollection =
// new ObservableCollection<int> { 1, 2, 3 };
//ObservableCollection<string> targetCollection =
// new ObservableCollection<string>();
//TwoWayCollectionBinding<int, string> twoWayBinding = new TwoWayCollectionBinding<int, string>
//{
// SourceCollection = sourceCollection,
// TargetCollection = targetCollection,
// SourceToTargetDelegate = (i) => i.ToString(),
// TargetToSourceDelegate = (str) => Int32.Parse(str)
//};
//twoWayBinding.Bind();
//Console.WriteLine("\nOriginal source collection");
//sourceCollection.ForEach((i) => Console.WriteLine(i)); // print the source collection
//Console.WriteLine("\nOriginal target collection");
//targetCollection.ForEach((i) => Console.WriteLine(i)); // print the source collection
//Console.WriteLine("\nAfter removing element at index 1 from source");
//sourceCollection.RemoveAt(1); // remove element at index 1 from source collection
//targetCollection.ForEach((str) => Console.WriteLine(str)); // print target collection
//Console.WriteLine("\nAfter adding 4 to target");
//targetCollection.Add("4"); // append string "4" to the end of the target collection
//sourceCollection.ForEach((i) => Console.WriteLine(i)); // print the source collection
//Console.WriteLine("\nAfter inserting 0 to target");
//targetCollection.Insert(0, "0"); // insert string "0" at index 0 for the target collection
//sourceCollection.ForEach((i) => Console.WriteLine(i)); // print the source collection
//Console.WriteLine("\nAfter inserting 2 at index 2 to source");
//sourceCollection.Insert(2, 2); // insert number 2 at index 2 for the source collection
//targetCollection.ForEach((str) => Console.WriteLine(str)); // print the target collection
#endregion pure collection binding
#region collection value binding
//Console.WriteLine("\nValue collection bindings");
//TestData<int> source = new TestData<int>();
//TestData<string> target = new TestData<string>();
//OneWayCollectionValueBindingWithPath
//<
// int,
// string,
// ObservableCollection<int>,
// ObservableCollection<string>
//>
//theBinding = new OneWayCollectionValueBindingWithPath
// <
// int,
// string,
// ObservableCollection<int>,
// ObservableCollection<string>
// >
// {
// IsOneWayCollectionBinding = false,
// CreationType = typeof(ObservableCollection<string>),
// SourceObj = source,
// TargetObj = target,
// SourceToTargetDelegate = (i) => i.ToString(),
// TargetToSourceDelegate = (str) => Int32.Parse(str)
// };
//List<BindingPathLink<object>> sourcePathLinks = new List<BindingPathLink<object>>();
//sourcePathLinks.Add(new BindingPathLink<object>("TheCollection"));
//theBinding.SourcePathLinks = sourcePathLinks;
//List<BindingPathLink<object>> targetPathLinks = new List<BindingPathLink<object>>();
//targetPathLinks.Add(new BindingPathLink<object>("TheCollection"));
//theBinding.TargetPathLinks = targetPathLinks;
//theBinding.Bind();
//source.TheCollection = new ObservableCollection<int>(new int[] { 1, 2, 3 });
//target.TheCollection.ForEach((str) => Console.WriteLine(str)); // print the target collection
//source.TheCollection.RemoveAt(1);
//Console.WriteLine();
//target.TheCollection.ForEach((str) => Console.WriteLine(str)); // print the target collection
//target.TheCollection.Add("4");
//Console.WriteLine();
//source.TheCollection.ForEach((str) => Console.WriteLine(str)); // print the source collection
#endregion collection value binding
#region value binding type testing
//TestData<Person> sourcePeople = new TestData<Person>();
//TestData<Person> targetPeople = new TestData<Person>();
//OneWayCollectionValueBindingWithPath peopleBinding = new OneWayCollectionValueBindingWithPath
//{
// SourceObj = sourcePeople,
// TargetObj = targetPeople,
// IsOneWayCollectionBinding = false,
// CreationType = typeof(ObservableCollection<Person>)
//};
//List<BindingPathLink<object>> peopleSourcePathLinks = new List<BindingPathLink<object>>();
//peopleSourcePathLinks.Add(new BindingPathLink<object>("TheCollection"));
//peopleBinding.SourcePathLinks = peopleSourcePathLinks;
//List<BindingPathLink<object>> peopleTargetPathLinks = new List<BindingPathLink<object>>();
//peopleTargetPathLinks.Add(new BindingPathLink<object>("TheCollection"));
//peopleBinding.TargetPathLinks = peopleTargetPathLinks;
//peopleBinding.Bind();
//UniversityClass universityClass = new UniversityClass();
//sourcePeople.TheCollection = universityClass.People;
#endregion value binding type testing
#region Map Collection Tests
UniversityClass theUniversityClass = new UniversityClass();
DHierarchyItemsControl dHierarchyItemsControl = new DHierarchyItemsControl();
OneWayCollectionValueBindingWithPath itemsSourceBinding = new OneWayCollectionValueBindingWithPath
{
SourceObj = dHierarchyItemsControl,
TargetObj = dHierarchyItemsControl,
IsOneWayCollectionBinding = true
};
List<BindingPathLink<object>> dataContextSourcePathLinks = new List<BindingPathLink<object>>();
dataContextSourcePathLinks.Add(new BindingPathLink<object>("DataContext"));
dataContextSourcePathLinks.Add(new BindingPathLink<object>("People"));
itemsSourceBinding.SourcePathLinks = dataContextSourcePathLinks;
List<BindingPathLink<object>> itemsSourceTargetPathLinks = new List<BindingPathLink<object>>();
itemsSourceTargetPathLinks.Add(new BindingPathLink<object>("ItemsSource"));
itemsSourceBinding.TargetPathLinks = itemsSourceTargetPathLinks;
itemsSourceBinding.Bind();
dHierarchyItemsControl.DataContext = theUniversityClass;
#endregion Map Collection Tests
int i = 0;
}
static void Main()
{
// source object
Organization myOrg = new Organization { OrgName = "TheOrganization" };
// target object
OrgPrintModel orgPrintModel = new OrgPrintModel();
// create the collection binding with path
OneWayCollectionValueBindingWithPath peopleBinding = new OneWayCollectionValueBindingWithPath
{
// set the source object
SourceObj = myOrg,
// define the path to the source property
// with respect to the source object
SourcePathLinks = new BindingPathLink<object>[]
{
new BindingPathLink<object>("People")
},
// set the target object
TargetObj = orgPrintModel,
// define the path to the target property
// with respect to the target object
TargetPathLinks = new BindingPathLink<object>[]
{
new BindingPathLink<object>("ItemsToPrint")
},
// creates the target collection
TheSourceToTargetValueConverterDelegate = (sourceCollection) => { return new List<PrintItem>(); },
// converts source collection item to target collection item
SourceToTargetItemDelegate = (sourceItem) =>
{
OrgPerson orgPerson = (OrgPerson)sourceItem;
return new PrintItem
{
StringToPrint = orgPerson.Name + " " + orgPerson.ThePosition.ToString()
};
}
};
// do the binding
peopleBinding.Bind();
// check that the there are no items in the
// output collection before the source collection
// is set and populated
orgPrintModel.Print("Before the people collection is populated:");
// create the input collection
myOrg.People = new ObservableCollection<OrgPerson>();
// populate the source collection with two positions
myOrg.People.Add(new OrgPerson("Tom", Position.CEO));
myOrg.People.Add(new OrgPerson("John", Position.Manager));
// verify that the binding target collection was
// modified accordingly
orgPrintModel.Print("Make sure the binding makes the target collection to be in synch with the source collection:");
// add another person to the source collection
myOrg.People.Add(new OrgPerson("Nick", Position.Developer));
// verify that the new item 'Nick' was added to target collection
orgPrintModel.Print("After adding 'Nick Developer' item to the source collection, make sure it also appears in the target collection:");
// remove Tom/CEO item from the source collection and make sure that
// the target collection is updated correspondingly
OrgPerson ceo = myOrg.People.Where((person) => person.ThePosition == Position.CEO).FirstOrDefault();
myOrg.People.Remove(ceo);
orgPrintModel.Print("After removing the CEO item from the source collection make sure it also disappeared from the target collection:");
// null the whose source collection and make sure that
// the target collection is also null or empty
myOrg.People = null;
orgPrintModel.Print("After source collection is null, target collection should be null or empty:");
// check that when you replace myOrg.People source collection
// with a new (already populated) collection,
// the target collection will contain the corresponding items.
ObservableCollection<OrgPerson> newPeopleCollection = new ObservableCollection<OrgPerson>();
newPeopleCollection.Add(new OrgPerson("Tom", Position.CEO));
newPeopleCollection.Add(new OrgPerson("John", Position.Manager));
myOrg.People = newPeopleCollection;
orgPrintModel.Print("After source collection is reset, target collection should also be reset:");
}
