InlineTableViewSource

InlineTableViewSource

/*
Snippet Name: InlineTableViewSource
Platform: iOS
Function: A subclass of UITableViewSource that allows you to define UITableViewDataSource and UITableViewDelegate methods inline, rather than subclassing. Lets you take advantage of closures and use tableviews where you can't create subclasses, like in Xamarin Sketches (compile and reference).

Funcs/Actions are prefixed with "_", feel free to alter if this disagrees with your styling guidelines. 

Usage: 

var cellId = new NSString("cell");
var tableView = new UITableView(View.Frame, UITableViewStyle.Grouped) {
	Source = new InlineTableViewSource {
			_NumberOfSections = (tv) => 2,
			_RowsInSection = (tv, section) => 5,
			_TitleForHeader = (tv, section) => String.Format("Section {0}", section),
			_GetCell = (tv, indexPath) => {
				var cell = tv.DequeueReusableCell(cellId) ?? new UITableViewCell(UITableViewCellStyle.Default, cellId);
				cell.TextLabel.Text = "hi"; 
				return cell;
		}
	}
};


Snippet:
*/

public class InlineTableViewSource : UITableViewSource
{
	public Action<UITableView, NSIndexPath> _AccessoryButtonTapped { get; set; }
	public Func<UITableView, NSIndexPath, UITableViewCellAccessory> _AccessoryForRow { get; set; }

	public Func<UITableView, NSIndexPath, Boolean> _CanEditRow { get; set; }
	public Func<UITableView, NSIndexPath, Boolean> _CanMoveRow { get; set; }

	public Func<UITableView, NSIndexPath, UITableViewCellEditingStyle> _EditingStyleForRow { get; set; }
	public Action<UITableView, UITableViewCellEditingStyle, NSIndexPath> _CommitEditingStyle { get; set; }
	public Action<UITableView, NSIndexPath> _DidEndEditing { get; set; }


	public Func<UITableView, nint> _NumberOfSections { get; set; }
	public Func<UITableView, nint, nint> _RowsInSection { get; set; }
	public Func<UITableView, NSIndexPath, UITableViewCell> _GetCell { get; set; }

	public Func<UITableView, NSIndexPath, nfloat> _GetHeightForRow { get; set; }
	public Func<UITableView, NSIndexPath, nint> _IndentationLevel { get; set; }

	public Func<UITableView, NSIndexPath, NSIndexPath> _WillSelectRow { get; set; }
	public Action<UITableView, NSIndexPath> _RowDeselected { get; set; }
	public Action<UITableView, NSIndexPath> _RowSelected { get; set; }


	public Func<UITableView, NSIndexPath, Boolean> _ShouldHighlightRow { get; set; }
	public Func<UITableView, NSIndexPath, Boolean> _ShouldIndentWhileEditing { get; set; }

	public Func<UITableView, NSIndexPath, String> _TitleForDeleteConfirmation { get; set; }
	public Func<UITableView, nint, String> _TitleForFooter { get; set; }
	public Func<UITableView, nint, String> _TitleForHeader { get; set; }


	public override void AccessoryButtonTapped(UITableView tableView, NSIndexPath indexPath)
	{
		if (_AccessoryButtonTapped != null)
			_AccessoryButtonTapped(tableView, indexPath);
	}

	public override UITableViewCellAccessory AccessoryForRow(UITableView tableView, NSIndexPath indexPath)
	{
		if (_AccessoryForRow != null)
			return _AccessoryForRow(tableView, indexPath);
		else
			return UITableViewCellAccessory.None;
	}

	public override Boolean CanEditRow(UITableView tableView, NSIndexPath indexPath)
	{
		if (_CanEditRow != null)
			return _CanEditRow(tableView, indexPath);
		else
			return false;
	}

	public override Boolean CanMoveRow(UITableView tableView, NSIndexPath indexPath)
	{
		if (_CanMoveRow != null)
			return _CanMoveRow(tableView, indexPath);
		else
			return false;
	}

	public override void CommitEditingStyle(UITableView tableView, UITableViewCellEditingStyle editingStyle, NSIndexPath indexPath)
	{
		if (_CommitEditingStyle != null)
			_CommitEditingStyle(tableView, editingStyle, indexPath);
	}

	public override void DidEndEditing(UITableView tableView, NSIndexPath indexPath)
	{
		if (_DidEndEditing != null)
			_DidEndEditing(tableView, indexPath);
	}

	public override UITableViewCellEditingStyle EditingStyleForRow(UITableView tableView, NSIndexPath indexPath)
	{
		if (_EditingStyleForRow != null)
			return _EditingStyleForRow(tableView, indexPath);
		else
			return UITableViewCellEditingStyle.None;
	}

	public override UITableViewCell GetCell(UITableView tableView, NSIndexPath indexPath)
	{
		if (_GetCell != null)
			return _GetCell(tableView, indexPath);
		else
			throw new NotImplementedException("GetCell");
	}
			
	public override nfloat GetHeightForRow(UITableView tableView, NSIndexPath indexPath)
	{
		if (_GetHeightForRow != null)
			return _GetHeightForRow(tableView, indexPath);
		else
			return 44f;
	}
			
	public override nint IndentationLevel(UITableView tableView, NSIndexPath indexPath)
	{
		if (_IndentationLevel != null)
			return _IndentationLevel(tableView, indexPath);
		else
			return 0; 
	}
			
	public override nint NumberOfSections(UITableView tableView)
	{
		if (_NumberOfSections != null)
			return _NumberOfSections(tableView);
		else
			return 1;
	}

	public override void RowDeselected(UITableView tableView, NSIndexPath indexPath)
	{
		if (_RowDeselected != null)
			_RowDeselected(tableView, indexPath); 
	}
			
	public override void RowSelected(UITableView tableView, NSIndexPath indexPath)
	{
		if (_RowSelected != null)
			_RowSelected(tableView, indexPath);
	}

	public override nint RowsInSection(UITableView tableview, nint section)
	{
		if (_RowsInSection != null)
			return _RowsInSection(tableview, section);
		else
			throw new NotImplementedException("RowsInSection");
	}

	public override Boolean ShouldHighlightRow(UITableView tableView, NSIndexPath rowIndexPath)
	{
		if (_ShouldHighlightRow != null)
			return _ShouldHighlightRow(tableView, rowIndexPath);
		else
			return true;
	}

	public override Boolean ShouldIndentWhileEditing(UITableView tableView, NSIndexPath indexPath)
	{
		if (_ShouldIndentWhileEditing != null)
			return _ShouldIndentWhileEditing(tableView, indexPath);
		else
			return true;
	}

	public override String TitleForDeleteConfirmation(UITableView tableView, NSIndexPath indexPath)
	{
		if (_TitleForDeleteConfirmation != null)
			return _TitleForDeleteConfirmation(tableView, indexPath);
		else
			return "Delete";
	}

	public override String TitleForFooter(UITableView tableView, nint section)
	{
		if (_TitleForFooter != null)
			return _TitleForFooter(tableView, section);
		else
			return null;
	}

	public override String TitleForHeader(UITableView tableView, nint section)
	{
		if (_TitleForHeader != null)
			return _TitleForHeader(tableView, section);
		else
			return null;
	}

	public override NSIndexPath WillSelectRow(UITableView tableView, NSIndexPath indexPath)
	{
		if (_WillSelectRow != null)
			return _WillSelectRow(tableView, indexPath);
		else
			return indexPath;
	}
}