// Handle supported edits to the data source (inserts and deletes).
public override void CommitEditingStyle(UITableView tableView, UITableViewCellEditingStyle editingStyle, NSIndexPath indexPath)
{
// Respond to the user's edit request: Insert a new statistic definition, or delete an existing one.
if (editingStyle == UITableViewCellEditingStyle.Insert)
{
// Create an overlay UI that lets the user choose a field and statistic type to add.
_chooseStatOverlay = new ChooseStatisticOverlay(_statPicker);
// Handle the OnStatisticDefined event to get the info entered by the user.
_chooseStatOverlay.OnStatisticDefined += (s, statDef) =>
{
// Verify the selected statistic doesn't exist in the collection (check for an alias with the same value).
StatisticDefinition existingItem = _statisticDefinitions.Find(itm => itm.OutputAlias == statDef.OutputAlias);
if (existingItem != null)
{
return;
}
// Make updates to the table (add the chosen statistic).
tableView.BeginUpdates();
// Insert a new row at the top of table display.
tableView.InsertRows(new[] { NSIndexPath.FromRowSection(0, 0) }, UITableViewRowAnimation.Fade);
// Insert the chosen statistic in the underlying collection.
_statisticDefinitions.Insert(0, statDef);
// Apply table edits.
tableView.EndUpdates();
};
// Handle when the user chooses to close the dialog.
_chooseStatOverlay.OnCanceled += (s, e) =>
{
// Remove the item input UI.
_chooseStatOverlay.Hide();
_chooseStatOverlay = null;
};
// Add the picker UI view (will display semi-transparent over the table view).
tableView.AddSubview(_chooseStatOverlay);
_chooseStatOverlay.TranslatesAutoresizingMaskIntoConstraints = false;
_chooseStatOverlay.LeadingAnchor.ConstraintEqualTo(tableView.SafeAreaLayoutGuide.LeadingAnchor).Active =
true;
_chooseStatOverlay.TrailingAnchor.ConstraintEqualTo(tableView.SafeAreaLayoutGuide.TrailingAnchor)
.Active = true;
_chooseStatOverlay.BottomAnchor.ConstraintEqualTo(tableView.SafeAreaLayoutGuide.BottomAnchor).Active = true;
}
else if (editingStyle == UITableViewCellEditingStyle.Delete)
{
// Remove the selected row from the table and the underlying collection of statistic definitions.
_statisticDefinitions.RemoveAt(indexPath.Row);
tableView.DeleteRows(new[] { indexPath }, UITableViewRowAnimation.Fade);
}
}
// Handle supported edits to the data source (inserts and deletes)
public override void CommitEditingStyle(UITableView tableView, UITableViewCellEditingStyle editingStyle, NSIndexPath indexPath)
{
// Respond to the user's edit request: Insert a new statistic definition, or delete an existing one
if (editingStyle == UITableViewCellEditingStyle.Insert)
{
// Get the bounds of the table
CGRect ovBounds = tableView.Bounds;
ovBounds.Height = ovBounds.Height + 60;
// Create an overlay UI that lets the user choose a field and statistic type to add
_chooseStatOverlay = new ChooseStatisticOverlay(ovBounds, 0.70f, UIColor.White, _statPicker);
// Handle the OnStatisticDefined event to get the info entered by the user
_chooseStatOverlay.OnStatisticDefined += (s, statDef) =>
{
// Verify the selected statistic doesn't exist in the collection (check for an alias with the same value)
StatisticDefinition existingItem = _statisticDefinitions.Find(itm => itm.OutputAlias == statDef.OutputAlias);
if (existingItem != null)
{
return;
}
// Make updates to the table (add the chosen statistic)
tableView.BeginUpdates();
// Insert a new row at the top of table display
tableView.InsertRows(new[] { NSIndexPath.FromRowSection(0, 0) }, UITableViewRowAnimation.Fade);
// Insert the chosen statistic in the underlying collection
_statisticDefinitions.Insert(0, statDef);
// Apply table edits
tableView.EndUpdates();
};
// Handle when the user chooses to close the dialog
_chooseStatOverlay.OnCanceled += (s, e) =>
{
// Remove the item input UI
_chooseStatOverlay.Hide();
_chooseStatOverlay = null;
};
// Add the picker UI view (will display semi-transparent over the table view)
tableView.Add(_chooseStatOverlay);
}
else if (editingStyle == UITableViewCellEditingStyle.Delete)
{
// Remove the selected row from the table and the underlying collection of statistic definitions
_statisticDefinitions.RemoveAt(indexPath.Row);
tableView.DeleteRows(new[] { indexPath }, UITableViewRowAnimation.Fade);
}
}