/// <summary>
/// This method will listen to the CurrentChanged event and will commit any add or edit
/// operations taking place in the PagedCollectionView.
/// </summary>
/// <param name="sender">PagedCollectionView firing the event</param>
/// <param name="e">CurrentChanged event args</param>
private void CommitAddOrEditOperation(object sender, EventArgs e)
{
PagedCollectionView pcv = sender as PagedCollectionView;
if (pcv != null)
{
if (pcv.IsAddingNew)
{
pcv.CommitNew();
}
else if (pcv.IsEditingItem)
{
pcv.CommitEdit();
}
}
}
public void OnCollectionChangedTest()
{
List <EditableTestClass> efbList = new List <EditableTestClass>();
ObservableCollection <TestClass> fbCollection = new ObservableCollection <TestClass>();
PagedCollectionView pcv1 = new PagedCollectionView(efbList);
PagedCollectionView pcv2 = new PagedCollectionView(fbCollection);
pcv1.CollectionChanged += new NotifyCollectionChangedEventHandler(this.PagedCollectionViewCollectionChanged);
pcv2.CollectionChanged += new NotifyCollectionChangedEventHandler(this.PagedCollectionViewCollectionChanged);
this._expectedAction = NotifyCollectionChangedAction.Reset;
this.AssertExpectedEvent(delegate { pcv1.Refresh(); });
this._expectedAction = NotifyCollectionChangedAction.Reset;
this.AssertExpectedEvent(delegate { fbCollection.Clear(); });
this._expectedAction = NotifyCollectionChangedAction.Add;
this.AssertExpectedEvent(delegate { fbCollection.Add(new TestClass()); });
EditableTestClass efb;
this._expectedAction = NotifyCollectionChangedAction.Add;
this.AssertExpectedEvent(delegate { efb = pcv1.AddNew() as EditableTestClass; });
pcv1.CommitNew();
// Add, then Cancel to fire a Remove
this._expectedAction = NotifyCollectionChangedAction.Add;
this.AssertExpectedEvent(delegate { pcv1.AddNew(); });
this._expectedAction = NotifyCollectionChangedAction.Remove;
this.AssertExpectedEvent(delegate { pcv1.CancelNew(); });
// Set PageSize to 1 to Reset
this._expectedAction = NotifyCollectionChangedAction.Reset;
this.AssertExpectedEvent(delegate { pcv1.PageSize = 1; });
// Remove an Item
this._expectedAction = NotifyCollectionChangedAction.Remove;
this.AssertExpectedEvent(delegate { pcv1.RemoveAt(0); });
pcv2.CollectionChanged -= new NotifyCollectionChangedEventHandler(this.PagedCollectionViewCollectionChanged);
pcv1.CollectionChanged -= new NotifyCollectionChangedEventHandler(this.PagedCollectionViewCollectionChanged);
}
public void GroupingInListBoxTest()
{
ObservableCollection <TestClass> collection = new ObservableCollection <TestClass>()
{
new TestClass {
IntProperty = 1, StringProperty = "A"
},
new TestClass {
IntProperty = 2, StringProperty = "B"
},
new TestClass {
IntProperty = 3, StringProperty = "A"
},
new TestClass {
IntProperty = 4, StringProperty = "B"
}
};
PagedCollectionView cv = new PagedCollectionView(collection);
ListBox lb = new ListBox();
lb.ItemsSource = cv;
this.CreateAsyncTask(
lb,
delegate
{
Assert.AreEqual(4, lb.Items.Count);
cv.GroupDescriptions.Add(new PropertyGroupDescription("StringProperty"));
Assert.AreEqual(4, lb.Items.Count);
Assert.AreEqual("A", (lb.Items[0] as TestClass).StringProperty);
Assert.AreEqual("A", (lb.Items[1] as TestClass).StringProperty);
Assert.AreEqual("B", (lb.Items[2] as TestClass).StringProperty);
Assert.AreEqual("B", (lb.Items[3] as TestClass).StringProperty);
cv.PageSize = 3;
cv.MoveToPage(1);
Assert.AreEqual(1, lb.Items.Count);
Assert.AreEqual("B", (lb.Items[0] as TestClass).StringProperty);
TestClass newItem = cv.AddNew() as TestClass;
newItem.StringProperty = "A";
newItem.IntProperty = 5;
// ---------------------
// |Page | 0 | 1 | 2 |
// ---------------------
// | 0 | A | A | B |
// | 1 | B |-A- | | <---- Current Page
Assert.AreEqual("B", (lb.Items[0] as TestClass).StringProperty);
Assert.AreEqual("A", (lb.Items[1] as TestClass).StringProperty);
cv.CommitNew();
// ---------------------
// |Page | 0 | 1 | 2 |
// ---------------------
// | 0 | A | A |-A- |
// | 1 | B | B | | <---- Current Page
Assert.AreEqual("B", (lb.Items[0] as TestClass).StringProperty);
Assert.AreEqual("B", (lb.Items[1] as TestClass).StringProperty);
cv.MoveToFirstPage();
Assert.AreEqual("A", (lb.Items[0] as TestClass).StringProperty);
Assert.AreEqual("A", (lb.Items[1] as TestClass).StringProperty);
Assert.AreEqual("A", (lb.Items[2] as TestClass).StringProperty);
});
EnqueueTestComplete();
}
public void AddRemoveEventsWithListBoxTest()
{
ObservableCollection <TestClass> collection = new ObservableCollection <TestClass>()
{
new TestClass {
IntProperty = 1, StringProperty = "A"
},
new TestClass {
IntProperty = 1, StringProperty = "C"
},
new TestClass {
IntProperty = 2, StringProperty = "D"
}
};
PagedCollectionView cv = new PagedCollectionView(collection);
ListBox lb = new ListBox();
lb.ItemsSource = cv;
this.CreateAsyncTask(
lb,
delegate
{
Assert.AreEqual(3, lb.Items.Count);
cv.AddNew();
cv.CommitNew();
Assert.AreEqual(4, lb.Items.Count);
cv.RemoveAt(3);
Assert.AreEqual(3, lb.Items.Count);
cv.SortDescriptions.Add(new System.ComponentModel.SortDescription("StringProperty", System.ComponentModel.ListSortDirection.Ascending));
TestClass newItem1 = new TestClass()
{
StringProperty = "B", IntProperty = 2
};
collection.Add(newItem1);
// Should have inserted into due to sorting
// {A, [B], C, D}
Assert.AreEqual(1, cv.IndexOf(newItem1));
Assert.AreEqual(1, lb.Items.IndexOf(newItem1));
cv.GroupDescriptions.Add(new PropertyGroupDescription("IntProperty"));
// Should now be grouped as
// {1A, 1C}
// {2B, 2D}
Assert.AreEqual(2, lb.Items.IndexOf(newItem1));
TestClass newItem2 = new TestClass()
{
StringProperty = "E", IntProperty = 1
};
collection.Add(newItem2);
// Should have inserted into due here to sorting/grouping
// {1A, 1C, [1E]}
// {2B, 2D}
Assert.AreEqual(2, cv.IndexOf(newItem2));
Assert.AreEqual(2, lb.Items.IndexOf(newItem2));
// Testing that with sorting/grouping, item is removed from the correct index
cv.RemoveAt(1);
Assert.AreEqual(newItem2, lb.Items[1]);
// Test 'Replace' operation.
TestClass newItem3 = new TestClass()
{
StringProperty = "F", IntProperty = 2
};
TestClass replacedItem = collection[0];
collection[0] = newItem3;
// This operation should have deleted old and added new
// {[-deleted-], 1E}
// {2B, 2D, [2F]}
Assert.AreEqual(-1, lb.Items.IndexOf(replacedItem));
Assert.AreEqual(3, lb.Items.IndexOf(newItem3));
});
EnqueueTestComplete();
}