private View getStartView(RecyclerView.LayoutManager layoutManager, OrientationHelper helper)
{
var linearLayoutManager = (LinearLayoutManager)layoutManager;
var firstChildIndex = linearLayoutManager.FindFirstVisibleItemPosition();
if (firstChildIndex == RecyclerView.NoPosition)
{
return(null);
}
subject.OnNext(linearLayoutManager.FindFirstCompletelyVisibleItemPosition() + 1);
var lastItemIndex = linearLayoutManager.ItemCount - 1;
var isLastItem = linearLayoutManager.FindLastCompletelyVisibleItemPosition() == lastItemIndex;
if (isLastItem)
{
return(null);
}
var firstView = layoutManager.FindViewByPosition(firstChildIndex);
var decoratedEnd = helper.GetDecoratedEnd(firstView);
var threshold = helper.GetDecoratedMeasurement(firstView) / 2;
if (decoratedEnd >= threshold && decoratedEnd > 0)
{
return(firstView);
}
return(layoutManager.FindViewByPosition(firstChildIndex + 1));
}
private View GetStartView(
RecyclerView.LayoutManager layoutManager,
OrientationHelper helper,
out int viewPosition)
{
viewPosition = -1;
if (!(layoutManager is LinearLayoutManager manager))
{
return(base.FindSnapView(layoutManager));
}
int firstChild = manager.FindFirstVisibleItemPosition();
bool isLastItem = manager.FindLastCompletelyVisibleItemPosition() == layoutManager.ItemCount - 1;
if (isLastItem)
{
if (WeakNativeView.TryGetTarget(out var target))
{
target.CurrentSnapIndex = layoutManager.ItemCount - 1;
// System.Diagnostics.Debug.WriteLine($">>>>>> CurrentSnapIndex: {target.CurrentSnapIndex}");
}
return(null);
}
if (firstChild == RecyclerView.NoPosition)
{
return(null);
}
View child = layoutManager.FindViewByPosition(firstChild);
if (helper.GetDecoratedEnd(child) >= helper.GetDecoratedMeasurement(child) / 2 &&
helper.GetDecoratedEnd(child) > 0)
{
viewPosition = firstChild;
return(child);
}
viewPosition = firstChild + 1;
return(layoutManager.FindViewByPosition(firstChild + 1));
}
void OnItemSelected(int position)
{
var CardViewModel = ViewModel.GetCardViewModel(position);
var intent = CardDetailActivity.CreateIntent(this, CardViewModel.Card);
var selectedItemViewHolder = layoutManager.FindViewByPosition(position);
var sharedView = selectedItemViewHolder.FindViewById(Resource.Id.CardImageView);
var transitionName = GetString(Resource.String.cardimage);
var transitionActivityOptions = ActivityOptions.MakeSceneTransitionAnimation(this, sharedView, transitionName);
StartActivity(intent, transitionActivityOptions.ToBundle());
}
private View GetStartView(
RecyclerView.LayoutManager layoutManager,
OrientationHelper helper,
out int viewPosition)
{
viewPosition = -1;
if (!(layoutManager is LinearLayoutManager manager))
{
return(base.FindSnapView(layoutManager));
}
int firstChild = manager.FindFirstVisibleItemPosition();
bool isLastItem = manager.FindLastCompletelyVisibleItemPosition() == layoutManager.ItemCount - 1;
if (firstChild == RecyclerView.NoPosition || isLastItem)
{
return(null);
}
View child = layoutManager.FindViewByPosition(firstChild);
if (helper.GetDecoratedEnd(child) >= helper.GetDecoratedMeasurement(child) / 2 &&
helper.GetDecoratedEnd(child) > 0)
{
viewPosition = firstChild;
return(child);
}
if (manager.FindLastCompletelyVisibleItemPosition() == layoutManager.ItemCount - 1)
{
return(null);
}
viewPosition = firstChild + 1;
return(layoutManager.FindViewByPosition(firstChild + 1));
}
public void OnItemLongClick(int position)
{
if (position == 0 && workingPath.Length != 1)
{
return;
}
var item = items[workingPath.Length == 1 ? position : (position - 1)];
var view = layoutManager.FindViewByPosition(position);
var popup = new PopupMenu(Context, view);
popup.MenuInflater.Inflate(Resource.Menu.file_actions, popup.Menu);
if (item.IsDirectory)
{
popup.Menu.FindItem(Resource.Id.action_download).SetVisible(false);
}
if (item.IsReadOnly)
{
popup.Menu.FindItem(Resource.Id.action_rename).SetVisible(false);
popup.Menu.FindItem(Resource.Id.action_move).SetVisible(false);
popup.Menu.FindItem(Resource.Id.action_delete).SetVisible(false);
}
if (item.Attributes.HasFlag(FileAttributes.Device))
{
popup.Menu.FindItem(Resource.Id.action_rename).SetVisible(false);
popup.Menu.FindItem(Resource.Id.action_move).SetVisible(false);
}
popup.MenuItemClick += (o, e) => {
switch (e.Item.ItemId)
{
case Resource.Id.action_download:
{
opSource = item;
this.StartActivityForResult(typeof(ChooseFolderActivity), CallbackDownload);
return;
}
case Resource.Id.action_move:
{
opSource = item;
var intent = new Intent(Context, typeof(ChooseDestinationActivity));
var deviceRoot = workingPath.Substring(1);
var nextSeparator = deviceRoot.IndexOf(Path.AltDirectorySeparatorChar);
if (nextSeparator == -1)
{
deviceRoot = "/" + deviceRoot;
}
else
{
deviceRoot = "/" + deviceRoot.Substring(0, nextSeparator);
}
intent.PutExtra(ChooseDestinationActivity.ExtraRootPath, deviceRoot);
StartActivityForResult(intent, CallbackMove);
return;
}
case Resource.Id.action_rename:
{
Activity.ShowEditorAlert(GetString(Resource.String.new_file_name), item.Name, item.Name, GetString(Resource.String.action_save), text => {
if (string.IsNullOrWhiteSpace(text))
{
Activity.ShowAlert(GetString(Resource.String.bad_file_name), null);
return;
}
if (text == item.Name)
{
return;
}
#pragma warning disable 0618
var progress = new Android.App.ProgressDialog(Context);
progress.SetCancelable(false);
progress.SetMessage(GetString(Resource.String.renaming));
progress.Show();
#pragma warning restore 0618
Task.Run(async() => {
try
{
var path = Path.Combine(workingPath, item.Name);
await fileSystem.RenameAsync(path, text).ConfigureAwait(false);
Activity.RunOnUiThread(() => {
progress.Dismiss();
RefreshDirectory(this, EventArgs.Empty);
});
}
catch (HttpRequestException exception)
{
Activity.RunOnUiThread(() => {
progress.Dismiss();
Activity.ShowAlert(GetString(Resource.String.error_remote), exception.Message);
});
}
catch (Exception exception)
{
Activity.RunOnUiThread(() => {
progress.Dismiss();
Activity.ShowAlert(GetString(Resource.String.error_rename_file), exception.GetType().Name);
});
}
});
}, GetString(Resource.String.action_cancel), null);
return;
}
case Resource.Id.action_delete:
{
Activity.ShowAlert(GetString(Resource.String.delete_permanently),
GetString(Resource.String.delete_all_contents, item.Name),
GetString(Resource.String.action_cancel), null, GetString(Resource.String.action_delete), () => {
#pragma warning disable 0618
var progress = new Android.App.ProgressDialog(Context);
progress.SetCancelable(false);
progress.SetMessage(GetString(Resource.String.deleting));
progress.Show();
#pragma warning restore 0618
Task.Run(async() => {
try
{
var path = Path.Combine(workingPath, item.Name);
if (item.IsDirectory)
{
path += Path.AltDirectorySeparatorChar;
}
await fileSystem.DeleteAsync(path).ConfigureAwait(false);
Activity.RunOnUiThread(() => {
progress.Dismiss();
RefreshDirectory(this, EventArgs.Empty);
});
}
catch (HttpRequestException exception)
{
Activity.RunOnUiThread(() => {
progress.Dismiss();
Activity.ShowAlert(GetString(Resource.String.error_remote), exception.Message);
});
}
catch (Exception exception)
{
Activity.RunOnUiThread(() => {
progress.Dismiss();
Activity.ShowAlert(GetString(Resource.String.error_delete_file), exception.GetType().Name);
});
}
});
});
return;
}
}
};
if (popup.Menu.Size() != 0)
{
var helper = new MenuPopupHelper(Context, (MenuBuilder)popup.Menu, view);
helper.SetForceShowIcon(true);
helper.Show();
}
}