/// <summary>
/// Creates the content control for the cell.
/// </summary>
/// <remarks>
/// The control returned may be reused for other cells, so it is ideal to use MVVM data binding using
/// BindDataContext()
/// methods of your controls.
/// This should return the same control for each row, otherwise the incorrect control may be shown on certain cells.
/// </remarks>
/// <param name="args">Cell arguments.</param>
public override Control OnCreate(CellEventArgs args)
{
if (ItemBinding == null)
{
return(null);
}
var checkBox = new CheckBox();
checkBox.CheckedBinding.BindDataContext(ItemBinding);
var label = new Label {
Wrap = WrapMode.None, VerticalAlignment = VerticalAlignment.Center
};
label.MouseDoubleClick += (sender, e) => checkBox.Checked = !checkBox.Checked;
label.Bind(c => c.TextColor, args, a => a.CellTextColor);
label.TextBinding.BindDataContext(ItemBinding.Convert(r => Convert.ToString(r)));
return(new TableLayout
{
Spacing = new Size(5, 0),
Rows = { new TableRow(new TableCell(label, true), checkBox) }
});
}
/// <summary>
/// Creates the content control for the cell.
/// </summary>
/// <remarks>
/// The control returned may be reused for other cells, so it is ideal to use MVVM data binding using
/// BindDataContext()
/// methods of your controls.
/// This should return the same control for each row, otherwise the incorrect control may be shown on certain cells.
/// </remarks>
/// <param name="args">Cell arguments.</param>
public override Control OnCreate(CellEventArgs args)
{
if (ItemBinding == null)
{
return(null);
}
var picker = new ColorPicker();
picker.ValueBinding.BindDataContext(ItemBinding);
if (!ShowHex)
{
return(picker);
}
var mask = ShowAlpha ? "\\#>AAAAAAAA" : "\\#>AAAAAA";
Control value;
if (HexEditable)
{
var textBox = new MaskedTextBox
{
Provider = new FixedMaskedTextProvider(mask),
InsertMode = InsertKeyMode.Overwrite,
BackgroundColor = Colors.Transparent,
ShowBorder = false
};
textBox.TextChanging += (sender, e) =>
{
e.Cancel = !e.Text.ToCharArray().Select(r => r.ToString()).All("0123456789abcdefABCDEF".Contains);
};
var colorBinding = textBox.Bind(c => c.TextColor, args, a => a.CellTextColor);
textBox.TextBinding.BindDataContext(ItemBinding.Convert(v => v.ToHex(ShowAlpha), v =>
{
Color c;
Color.TryParse(v, out c);
return(c);
}));
textBox.GotFocus += (sender, e) =>
{
colorBinding.Mode = DualBindingMode.Manual;
textBox.BackgroundColor = SystemColors.ControlBackground;
textBox.TextColor = SystemColors.ControlText;
};
textBox.LostFocus += (sender, e) =>
{
textBox.BackgroundColor = Colors.Transparent;
colorBinding.Mode = DualBindingMode.TwoWay;
colorBinding.Update();
};
value = textBox;
}
else
{
var label = new Label();
label.Bind(c => c.TextColor, args, a => a.CellTextColor);
label.TextBinding.BindDataContext(ItemBinding.Convert(v => v.ToHex(ShowAlpha), v =>
{
Color c;
Color.TryParse(v, out c);
return(c);
}));
value = label;
}
return(new StackLayout
{
Orientation = Orientation.Horizontal,
VerticalContentAlignment = VerticalAlignment.Stretch,
Items = { new StackLayoutItem(value, expand: true), picker }
});
}
