public void ItemsShouldHaveTheCorrectSelectionStateInTheCollection()
{
var target = new HierarchicalItemCollection<string>( CreateNodeHierarchy() );
target.SelectionMode = HierarchicalItemSelectionModes.All | HierarchicalItemSelectionModes.Synchronize;
// select all items
target[0].IsSelected = true;
Assert.Equal( true, target[0].IsSelected );
Assert.Equal( true, target[0][0].IsSelected );
Assert.Equal( true, target[0][1].IsSelected );
Assert.Equal( true, target[0][2].IsSelected );
Assert.Equal( 13, target.SelectedItems.Count );
// unselect a child item
target[0][0][0].IsSelected = false;
Assert.Equal( false, target[0][0][0].IsSelected );
Assert.Null( target[0][0].IsSelected );
Assert.Null( target[0].IsSelected );
Assert.Equal( 10, target.SelectedItems.Count );
// unselect all items
target[0].IsSelected = false;
Assert.Equal( false, target[0].IsSelected );
Assert.Equal( false, target[0][0].IsSelected );
Assert.Equal( false, target[0][1].IsSelected );
Assert.Equal( false, target[0][2].IsSelected );
Assert.Equal( 0, target.SelectedItems.Count );
}
public void CollectionShouldResembleTreeWhenRootNodeIsProvided()
{
var target = new HierarchicalItemCollection<string>( CreateNodeHierarchy() );
Assert.Equal( 1, target.Count );
Assert.Equal( false, target[0].IsSelected );
Assert.Equal( 3, target[0].Count );
}
public void CollectionShouldResembleFanWhenMultipleRootNodesAreProvided()
{
var target = new HierarchicalItemCollection<string>( CreateNodeHierarchy().ToList() );
Assert.Equal( 3, target[0].Count );
Assert.Equal( false, target[0].IsSelected );
Assert.Equal( false, target[1].IsSelected );
Assert.Equal( false, target[2].IsSelected );
}
public void OnlyLeafItemsShouldBeSelectedInCollection()
{
var target = new HierarchicalItemCollection<string>( CreateNodeHierarchy() );
target.SelectionMode = HierarchicalItemSelectionModes.Leaf | HierarchicalItemSelectionModes.Synchronize;
// select all items
target[0].IsSelected = true;
Assert.Equal( true, target[0].IsSelected );
Assert.Equal( true, target[0][0].IsSelected );
Assert.Equal( true, target[0][1].IsSelected );
Assert.Equal( true, target[0][2].IsSelected );
Assert.Equal( true, target[0][0][0].IsSelected );
Assert.Equal( true, target[0][0][1].IsSelected );
Assert.Equal( true, target[0][0][2].IsSelected );
Assert.Equal( 9, target.SelectedItems.Count );
// unselect a child item
target[0][0][0].IsSelected = false;
Assert.Equal( false, target[0][0][0].IsSelected );
Assert.Null( target[0][0].IsSelected );
Assert.Null( target[0].IsSelected );
Assert.Equal( 8, target.SelectedItems.Count );
// unselect all items
target[0].IsSelected = false;
Assert.Equal( false, target[0].IsSelected );
Assert.Equal( false, target[0][0].IsSelected );
Assert.Equal( false, target[0][1].IsSelected );
Assert.Equal( false, target[0][2].IsSelected );
Assert.Equal( false, target[0][0][0].IsSelected );
Assert.Equal( 0, target.SelectedItems.Count );
}
public void CollectionShouldBeInSyncWithSourceNodeCollection()
{
var source = CreateNodeHierarchy();
var newItem = new Node<string>( "Item 1.4" );
var target = new HierarchicalItemCollection<string>( source )
{
SelectionMode = HierarchicalItemSelectionModes.All | HierarchicalItemSelectionModes.Synchronize
};
// select all items
target[0].IsSelected = true;
Assert.Equal( 13, target.SelectedItems.Count );
// add new item (should cause parent update and unselection of items due to indeterminate state)
source[0].Add( newItem );
Assert.Equal( 11, target.SelectedItems.Count );
Assert.Equal( "Item 1.4", target[0][0][3].Value );
Assert.Null( target[0].IsSelected );
// select new item, which should make entire path selected
target[0][0][3].IsSelected = true;
Assert.Equal( 14, target.SelectedItems.Count );
Assert.Equal( true, target[0][0][3].IsSelected );
Assert.Equal( true, target[0].IsSelected );
// unselect item to revert state
target[0][0][3].IsSelected = false;
Assert.Equal( 11, target.SelectedItems.Count );
Assert.Null( target[0].IsSelected );
// remove a source item should cause the hierarchy to update
source[0].Remove( newItem );
Assert.Equal( 13, target.SelectedItems.Count );
Assert.Equal( true, target[0].IsSelected );
}
