public string GetDisplayTextFromGroup(object cell)
{
int groupIndex = TemplatedItems.GetGlobalIndexOfGroup(cell);
if (groupIndex == -1)
{
return(cell.ToString());
}
var group = TemplatedItems.GetGroup(groupIndex);
string displayBinding = null;
if (GroupDisplayBinding != null)
{
displayBinding = group.Name;
}
if (GroupShortNameBinding != null)
{
displayBinding = group.ShortName;
}
// TODO: what if they set both? should it default to the ShortName, like it will here?
// ShortNames binding did not appear to be functional before.
return(displayBinding);
}
public void NotifyRowTapped(int groupIndex, int inGroupIndex, Cell cell = null)
{
var group = TemplatedItems.GetGroup(groupIndex);
bool changed = _previousGroupSelected != groupIndex || _previousRowSelected != inGroupIndex;
_previousRowSelected = inGroupIndex;
_previousGroupSelected = groupIndex;
// A11y: Keyboards and screen readers can deselect items, allowing -1 to be possible
if (cell == null && inGroupIndex != -1)
{
cell = group[inGroupIndex];
}
// Set SelectedItem before any events so we don't override any changes they may have made.
if (SelectionMode != ListViewSelectionMode.None)
{
SetValueCore(SelectedItemProperty, cell?.BindingContext, SetValueFlags.ClearOneWayBindings | SetValueFlags.ClearDynamicResource | (changed ? SetValueFlags.RaiseOnEqual : 0));
}
cell?.OnTapped();
ItemTapped?.Invoke(this, new ItemTappedEventArgs(ItemsSource.Cast <object>().ElementAt(groupIndex), cell?.BindingContext));
}
internal void NotifyRowTapped(int groupIndex, int inGroupIndex, Cell cell = null)
{
var group = TemplatedItems.GetGroup(groupIndex);
bool changed = _previousGroupSelected != groupIndex || _previousRowSelected != inGroupIndex;
_previousRowSelected = inGroupIndex;
_previousGroupSelected = groupIndex;
if (cell == null)
{
cell = group[inGroupIndex];
}
// Set SelectedItem before any events so we don't override any changes they may have made.
SetValueCore(SelectedItemProperty, cell.BindingContext, SetValueFlags.ClearOneWayBindings | SetValueFlags.ClearDynamicResource | (changed ? SetValueFlags.RaiseOnEqual : 0));
cell.OnTapped();
ItemTapped?.Invoke(this, new ItemTappedEventArgs(ItemsSource.Cast <object>().ElementAt(groupIndex), cell.BindingContext));
}
public void NotifyRowTapped(int groupIndex, int inGroupIndex, Cell cell, bool isContextMenuRequested)
{
var group = TemplatedItems.GetGroup(groupIndex);
bool changed = _previousGroupSelected != groupIndex || _previousRowSelected != inGroupIndex;
_previousRowSelected = inGroupIndex;
_previousGroupSelected = groupIndex;
// A11y: Keyboards and screen readers can deselect items, allowing -1 to be possible
if (cell == null && inGroupIndex >= 0 && group.Count > inGroupIndex)
{
cell = group[inGroupIndex];
}
// Set SelectedItem before any events so we don't override any changes they may have made.
if (SelectionMode != ListViewSelectionMode.None)
{
SetValueCore(SelectedItemProperty, cell?.BindingContext, SetValueFlags.ClearOneWayBindings | SetValueFlags.ClearDynamicResource | (changed ? SetValueFlags.RaiseOnEqual : 0));
}
if (isContextMenuRequested || cell == null)
{
return;
}
cell.OnTapped();
var itemSource = ItemsSource?.Cast <object>().ToList();
object tappedGroup = null;
if (itemSource?.Count > groupIndex)
{
tappedGroup = itemSource.ElementAt(groupIndex);
}
ItemTapped?.Invoke(this,
new ItemTappedEventArgs(tappedGroup, cell.BindingContext,
TemplatedItems.GetGlobalIndexOfItem(cell?.BindingContext)));
}
