private void SuggestionsList_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
ListView listview = (ListView)sender;
_viewModel.Results.SelectedItem = (ResultViewModel)listview.SelectedItem;
if (e.AddedItems.Count > 0 && e.AddedItems[0] != null)
{
try
{
listview.ScrollIntoView(e.AddedItems[0]);
}
catch (ArgumentOutOfRangeException ex)
{
// Due to virtualization being enabled for the listview, the layout system updates elements in a deferred manner using an algorithm that balances performance and concurrency.
// Hence, there can be a situation where the element index that we want to scroll into view is out of range for it's parent control.
// To mitigate this we use the UpdateLayout function, which forces layout update to ensure that the parent element contains the latest properties.
// However, it has a performance impact and is therefore not called each time.
Log.Exception("MainWindow", "The parent element layout is not updated yet", ex, "SuggestionsList_SelectionChanged");
listview.UpdateLayout();
listview.ScrollIntoView(e.AddedItems[0]);
}
}
// To populate the AutoCompleteTextBox as soon as the selection is changed or set.
// Setting it here instead of when the text is changed as there is a delay in executing the query and populating the result
if (_viewModel.Results != null)
{
SearchBox.AutoCompleteTextBlock.Text = MainViewModel.GetAutoCompleteText(
_viewModel.Results.SelectedIndex,
_viewModel.Results.SelectedItem?.SearchBoxDisplayText(),
_viewModel.QueryText);
}
}
private void GetAppFromDirectory(string path, List <Program> list)
{
try
{
foreach (string file in Directory.GetFiles(path))
{
if (UserSettingStorage.Instance.ProgramSuffixes.Split(';').Any(o => file.EndsWith("." + o)))
{
Program p = CreateEntry(file);
list.Add(p);
}
}
foreach (var subDirectory in Directory.GetDirectories(path))
{
GetAppFromDirectory(subDirectory, list);
}
}
catch (UnauthorizedAccessException e)
{
Log.Warn(string.Format("Can't access to directory {0}", path));
}
catch (DirectoryNotFoundException e)
{
Log.Warn(string.Format("Directory {0} doesn't exist", path));
}
catch (PathTooLongException e)
{
Log.Warn(string.Format("File path too long: {0}", e.Message));
}
}
private void GetAppFromDirectory(string path, List <Program> list, int depth)
{
if (maxDepth != -1 && depth > maxDepth)
{
return;
}
try
{
foreach (string file in Directory.GetFiles(path))
{
if (ProgramStorage.Instance.ProgramSuffixes.Split(';').Any(o => file.EndsWith("." + o)) ||
suffixes.Split(';').Any(o => file.EndsWith("." + o)))
{
Program p = CreateEntry(file);
list.Add(p);
}
}
foreach (var subDirectory in Directory.GetDirectories(path))
{
GetAppFromDirectory(subDirectory, list, depth + 1);
}
}
catch (Exception e)
{
Log.Warn(string.Format("GetAppFromDirectory failed: {0} - {1}", path, e.Message));
}
}
