public static void SetSource(DependencyObject obj, FocusSource value)
{
if (obj is null)
{
throw new ArgumentNullException(nameof(obj));
}
obj.SetValue(SourceProperty, value);
}
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;
}
