public void ClearsFilterOnEachItem()
{
HierarchyTreeViewItemCollection collection;
HierarchyTreeViewItem item;
HierarchyTreeViewItem childA;
HierarchyTreeViewItem childB;
HierarchyTreeViewItem childC;
childA = Factory.CreateTreeViewItem(name: "A");
childB = Factory.CreateTreeViewItem(name: "B");
childC = Factory.CreateTreeViewItem(name: "C");
item = Factory.CreateTreeViewItem(name: "Root", children: new[] { childA, childB, childC });
collection = new HierarchyTreeViewItemCollection(new[] { item });
collection.Filter(new RegexTextFilter("B"));
Assert.Equal(new[] { item }, collection);
Assert.Equal(new[] { childB }, item.Children);
collection.ClearFilter();
Assert.Equal(new[] { item }, collection);
Assert.Equal(new[] { childA, childB, childC }, item.Children);
}
public HierarchyTreeViewItem(
IHierarchyNode node,
IEnumerable <HierarchyTreeViewItem> children
)
{
_node = node;
Children = new HierarchyTreeViewItemCollection(children);
_isChecked = false;
_isExpanded = true;
// Connect the children to this parent item.
foreach (var child in Children)
{
child.Parent = this;
}
// If there are children, then that collection could
// change as the items are filtered. We will need to
// update our checked state when that collection changes.
if (Children.Count > 0)
{
Children.CollectionChanged += (s, e) => UpdateCheckedStateFromChildren(true);
}
}
public void IncludesFilteredItems()
{
HierarchyTreeViewItemCollection collection;
HierarchyTreeViewItem root1;
HierarchyTreeViewItem root2;
HierarchyTreeViewItem child1;
HierarchyTreeViewItem child2;
HierarchyTreeViewItem grandchild1;
HierarchyTreeViewItem grandchild2;
grandchild1 = Factory.CreateTreeViewItem(name: "x");
grandchild2 = Factory.CreateTreeViewItem(name: "a");
child1 = Factory.CreateTreeViewItem(name: "x", children: new[] { grandchild1 });
child2 = Factory.CreateTreeViewItem(name: "x", children: new[] { grandchild2 });
root1 = Factory.CreateTreeViewItem(name: "x", children: new[] { child1 });
root2 = Factory.CreateTreeViewItem(name: "a", children: new[] { child2 });
collection = new HierarchyTreeViewItemCollection(new[] { root1, root2 });
collection.Filter(new RegexTextFilter("x"));
Assert.Equal(
new[] {
root1,
child1,
grandchild1,
root2,
child2,
grandchild2
},
collection.GetFullHierarchy()
);
}
public void ReturnsAllItemsAndAllDescendants()
{
HierarchyTreeViewItemCollection collection;
HierarchyTreeViewItem root1;
HierarchyTreeViewItem root2;
HierarchyTreeViewItem child1;
HierarchyTreeViewItem child2;
HierarchyTreeViewItem grandchild1;
HierarchyTreeViewItem grandchild2;
grandchild1 = Factory.CreateTreeViewItem();
grandchild2 = Factory.CreateTreeViewItem();
child1 = Factory.CreateTreeViewItem(children: new[] { grandchild1 });
child2 = Factory.CreateTreeViewItem(children: new[] { grandchild2 });
root1 = Factory.CreateTreeViewItem(children: new[] { child1 });
root2 = Factory.CreateTreeViewItem(children: new[] { child2 });
collection = new HierarchyTreeViewItemCollection(new[] { root1, root2 });
Assert.Equal(
new[] {
root1,
child1,
grandchild1,
root2,
child2,
grandchild2
},
collection.GetFullHierarchy()
);
}
public void ReturnsFalseWhenCollectionIsEmpty()
{
HierarchyTreeViewItemCollection collection;
collection = new HierarchyTreeViewItemCollection(Enumerable.Empty <HierarchyTreeViewItem>());
Assert.False(collection.CalculateCheckedState());
}
public async Task OnLoadedAsync()
{
IEnumerable <IHierarchyNode> hierarchy;
hierarchy = await _hierarchyFactory.Invoke();
Items = new HierarchyTreeViewItemCollection(hierarchy.Select(CreateItem));
LoadedVisibility = Visibility.Visible;
LoadingVisibility = Visibility.Collapsed;
}
public void ReturnsNullWhenAllItemsAreIndeterminate()
{
HierarchyTreeViewItemCollection collection;
collection = new HierarchyTreeViewItemCollection(new[] {
Factory.CreateTreeViewItem(isChecked: null),
Factory.CreateTreeViewItem(isChecked: null),
Factory.CreateTreeViewItem(isChecked: null),
});
Assert.Null(collection.CalculateCheckedState());
}
public void ReturnsTrueWhenAllItemsAreChecked()
{
HierarchyTreeViewItemCollection collection;
collection = new HierarchyTreeViewItemCollection(new[] {
Factory.CreateTreeViewItem(isChecked: true),
Factory.CreateTreeViewItem(isChecked: true),
Factory.CreateTreeViewItem(isChecked: true),
});
Assert.True(collection.CalculateCheckedState());
}
public void ReturnsNullWhenSomeItemsAreChecked()
{
HierarchyTreeViewItemCollection collection;
collection = new HierarchyTreeViewItemCollection(new[] {
Factory.CreateTreeViewItem(isChecked: true),
Factory.CreateTreeViewItem(isChecked: false),
Factory.CreateTreeViewItem(isChecked: true),
});
Assert.Null(collection.CalculateCheckedState());
}
public void ReturnsFalseWhenNoItemsAreChecked()
{
HierarchyTreeViewItemCollection collection;
collection = new HierarchyTreeViewItemCollection(new[] {
Factory.CreateTreeViewItem(isChecked: false),
Factory.CreateTreeViewItem(isChecked: false),
Factory.CreateTreeViewItem(isChecked: false)
});
Assert.False(collection.CalculateCheckedState());
}
public void DoesNotRaiseCollectionChangedEventWhenCollectionIsEmpty()
{
HierarchyTreeViewItemCollection collection;
bool raised;
raised = false;
collection = new HierarchyTreeViewItemCollection(Enumerable.Empty <HierarchyTreeViewItem>());
collection.CollectionChanged += (s, e) => raised = true;
collection.Filter(new RegexTextFilter("foo"));
Assert.False(raised);
}
public void FiltersCollectionToOnlyContainItemsThatMatchFilterWhenItemshaveNoChildren()
{
HierarchyTreeViewItemCollection collection;
HierarchyTreeViewItem foo;
HierarchyTreeViewItem bar;
HierarchyTreeViewItem meep;
foo = Factory.CreateTreeViewItem(name: "foo");
bar = Factory.CreateTreeViewItem(name: "bar");
meep = Factory.CreateTreeViewItem(name: "meep");
collection = new HierarchyTreeViewItemCollection(new[] { foo, bar, meep });
collection.Filter(new RegexTextFilter("foo"));
Assert.Equal(new[] { foo }, collection);
}
public void FiltersCollectionToOnlyContainItemsThatMatchFilterOrHaveChildrenThatMatchFilter()
{
HierarchyTreeViewItemCollection collection;
HierarchyTreeViewItem foo;
HierarchyTreeViewItem bar;
HierarchyTreeViewItem meep;
foo = Factory.CreateTreeViewItem(name: "foo", children: new[] { Factory.CreateTreeViewItem(name: "x") });
bar = Factory.CreateTreeViewItem(name: "bar", children: new[] { Factory.CreateTreeViewItem(name: "y") });
meep = Factory.CreateTreeViewItem(name: "meep", children: new[] { Factory.CreateTreeViewItem(name: "fff") });
collection = new HierarchyTreeViewItemCollection(new[] { foo, bar, meep });
collection.Filter(new RegexTextFilter("f"));
Assert.Equal(new[] { foo, meep }, collection);
}
public void ReturnsCountOfFilteredItems()
{
HierarchyTreeViewItemCollection collection;
collection = new HierarchyTreeViewItemCollection(new[] {
Factory.CreateTreeViewItem(name: "foo"),
Factory.CreateTreeViewItem(name: "bar")
});
Assert.Equal(2, collection.Count);
collection.Filter(new RegexTextFilter("f"));
Assert.Single(collection);
collection.ClearFilter();
Assert.Equal(2, collection.Count);
}
public void RaisesCollectionChangedEventWhenCollectionIsNotEmpty()
{
HierarchyTreeViewItemCollection collection;
Assert.RaisedEvent <NotifyCollectionChangedEventArgs> e;
collection = new HierarchyTreeViewItemCollection(new[] {
Factory.CreateTreeViewItem(name: "foo"),
Factory.CreateTreeViewItem(name: "bar")
});
e = Assert.Raises <NotifyCollectionChangedEventArgs>(
(x) => collection.CollectionChanged += new NotifyCollectionChangedEventHandler(x),
(x) => collection.CollectionChanged -= new NotifyCollectionChangedEventHandler(x),
() => collection.Filter(new RegexTextFilter("foo"))
);
Assert.Equal(NotifyCollectionChangedAction.Reset, e.Arguments.Action);
}
public void DoesNotIncludeFilteredItems()
{
HierarchyTreeViewItemCollection collection;
HierarchyTreeViewItem root1;
HierarchyTreeViewItem root2;
HierarchyTreeViewItem root3;
root1 = Factory.CreateTreeViewItem(name: "x");
root2 = Factory.CreateTreeViewItem(name: "a");
root3 = Factory.CreateTreeViewItem(name: "x");
collection = new HierarchyTreeViewItemCollection(new[] { root1, root2, root3 });
collection.Filter(new RegexTextFilter("x"));
Assert.Equal(
new[] { root1, root3 },
collection
);
}
public void UsesOriginalItemsWhenFilteringIfCollectionHasAlreadyBeenFiltered()
{
HierarchyTreeViewItemCollection collection;
HierarchyTreeViewItem foo;
HierarchyTreeViewItem bar;
HierarchyTreeViewItem meep;
foo = Factory.CreateTreeViewItem(name: "foo");
bar = Factory.CreateTreeViewItem(name: "bar");
meep = Factory.CreateTreeViewItem(name: "meep");
collection = new HierarchyTreeViewItemCollection(new[] { foo, bar, meep });
collection.Filter(new RegexTextFilter("foo"));
Assert.Equal(new[] { foo }, collection);
collection.Filter(new RegexTextFilter("bar"));
Assert.Equal(new[] { bar }, collection);
}
public void RestoresOriginalItems()
{
HierarchyTreeViewItemCollection collection;
HierarchyTreeViewItem foo;
HierarchyTreeViewItem bar;
HierarchyTreeViewItem meep;
foo = Factory.CreateTreeViewItem(name: "foo");
bar = Factory.CreateTreeViewItem(name: "bar");
meep = Factory.CreateTreeViewItem(name: "meep");
collection = new HierarchyTreeViewItemCollection(new[] { foo, bar, meep });
collection.Filter(new RegexTextFilter("foo"));
Assert.Equal(new[] { foo }, collection);
collection.ClearFilter();
Assert.Equal(new[] { foo, bar, meep }, collection);
}
public FilterDialogViewModel(
Func <Task <IEnumerable <IHierarchyNode> > > hierarchyFactory,
Func <TimeSpan, IDebouncer> debouncerFactory,
TextFilterFactory textFilterFactory,
JoinableTaskFactory joinableTaskFactory
)
{
if (debouncerFactory is null)
{
throw new ArgumentNullException(nameof(debouncerFactory));
}
_hierarchyFactory = hierarchyFactory ?? throw new ArgumentNullException(nameof(hierarchyFactory));
_textFilterFactory = textFilterFactory ?? throw new ArgumentNullException(nameof(textFilterFactory));
_items = new HierarchyTreeViewItemCollection(Enumerable.Empty <HierarchyTreeViewItem>());
_searchText = "";
_loadingVisibility = Visibility.Visible;
_loadedVisibility = Visibility.Collapsed;
FocusSearchBoxSource = new FocusSource();
ToggleLoadProjectDependenciesCommand = new DelegateCommand(
(_) => LoadProjectDependencies = !LoadProjectDependencies,
CanAlwaysExecute,
joinableTaskFactory
);
CollapseAllCommand = new DelegateCommand <HierarchyTreeViewItem>(
CollapseAll,
CanAlwaysExecute,
joinableTaskFactory
);
ExpandAllCommand = new DelegateCommand <HierarchyTreeViewItem>(
ExpandAll,
CanAlwaysExecute,
joinableTaskFactory
);
CheckAllCommand = new DelegateCommand(
(_) => SetAllChecked(true),
CanAlwaysExecute,
joinableTaskFactory
);
UncheckAllCommand = new DelegateCommand(
(_) => SetAllChecked(false),
CanAlwaysExecute,
joinableTaskFactory
);
ToggleRegularExpressionModeCommand = new DelegateCommand(
(_) => UseRegularExpressions = !UseRegularExpressions,
CanAlwaysExecute,
joinableTaskFactory
);
FocusSearchBoxCommand = new DelegateCommand(
(_) => FocusSearchBoxSource.RequestFocus(),
CanAlwaysExecute,
joinableTaskFactory
);
AcceptCommand = new DelegateCommand(
(_) => AcceptSelection(),
CanAlwaysExecute,
joinableTaskFactory
);
// Use a `DispatcherTimer` constructor without a callback
// so that the timer doesn't start immediately. We only
// want to start the timer when the search text changes.
_debouncer = debouncerFactory.Invoke(TimeSpan.FromMilliseconds(500));
_debouncer.Stable += OnSearchStable;
}