/// <summary>
/// Returns contents of specified part.
/// </summary>
/// <param name="cell">Multiline cell.</param>
/// <param name="part">Part.</param>
/// <returns>Eves object in specified part.</returns>
protected override EvasObject OnGetContent(Cell cell, string part)
{
MultilineCell multilineCell = (MultilineCell)cell;
if (part == _iconPart && multilineCell.Icon != null)
{
var image = new NImage(Forms.NativeParent);
SetUpImage(multilineCell, image);
return(image);
}
else if (part == _endPart && multilineCell.IsCheckVisible)
{
var check = new Check(Forms.NativeParent);
check.SetAlignment(-1, -1);
check.SetWeight(1, 1);
check.IsChecked = multilineCell.IsChecked;
//It is a temporary way to prevent that the check of the Cell gets focus until the UX about views in the Cell for TV is defined.
if (Device.Idiom == TargetIdiom.TV)
{
check.AllowFocus(false);
}
return(check);
}
return(null);
}
/// <summary>
/// Handles cell's properties change.
/// Updates view properties.
/// </summary>
/// <param name="cell">Actual multiline cell.</param>
/// <param name="property">Property name.</param>
/// <param name="realizedView">Set of corresponding properties names and Evas Objects.</param>
/// <returns>False if property has been changed. True otherwise.</returns>
protected override bool OnCellPropertyChanged(Cell cell, string property, Dictionary <string, EvasObject> realizedView)
{
MultilineCell multilineCell = (MultilineCell)cell;
if (property == MultilineCell.IconProperty.PropertyName)
{
if (!realizedView.ContainsKey(_iconPart) || multilineCell.Icon == null)
{
return(true);
}
var image = realizedView[_iconPart] as NImage;
SetUpImage(multilineCell, image);
return(false);
}
else if (property == MultilineCell.IsCheckedProperty.PropertyName && realizedView.ContainsKey(_endPart))
{
var check = realizedView[_endPart] as Check;
check.IsChecked = multilineCell.IsChecked;
return(false);
}
else if (property == MultilineCell.IsCheckVisibleProperty.PropertyName ||
property == MultilineCell.TextProperty.PropertyName ||
property == MultilineCell.MultilineProperty.PropertyName)
{
return(true);
}
return(base.OnCellPropertyChanged(cell, property, realizedView));
}
/// <summary>
/// Returns EvasObject which constitutes the cell
/// </summary>
/// <param name="cell">Cell</param>
/// <param name="part">Cell's style name</param>
/// <returns>EvasObject</returns>
protected override EvasObject OnGetContent(Cell cell, string part)
{
MultilineCell multilineCell = (MultilineCell)cell;
if (part == _iconPart && multilineCell.Icon != null)
{
var image = new NImage(Forms.Context.MainWindow);
SetUpImage(multilineCell, image);
return(image);
}
else if (part == _endPart && multilineCell.IsCheckVisible)
{
var check = new Check(Forms.Context.MainWindow)
{
Style = "toggle"
};
check.SetAlignment(-1, -1);
check.SetWeight(1, 1);
check.IsChecked = multilineCell.IsChecked;
check.StateChanged += (sender, e) =>
{
multilineCell.IsChecked = e.NewState;
};
return(check);
}
return(null);
}
/// <summary>
/// Loads image.
/// Sets images dimensions.
/// </summary>
/// <param name="cell">Multiline cell element.</param>
/// <param name="image">Image element.</param>
void SetUpImage(MultilineCell cell, NImage image)
{
if (cell.IconHeight > 0 && cell.IconWidth > 0)
{
image.MinimumWidth = cell.IconWidth;
image.MinimumHeight = cell.IconHeight;
}
else
{
image.LoadingCompleted += (sender, e) =>
{
image.MinimumWidth = image.ObjectSize.Width;
image.MinimumHeight = image.ObjectSize.Height;
};
}
image.LoadFromImageSourceAsync(cell.Icon);
}
/// <summary>
/// Returns new span component.
/// </summary>
/// <param name="cell">Cell element.</param>
/// <param name="part">Source element.</param>
/// <returns>Span component.</returns>
protected override Span OnGetText(Cell cell, string part)
{
MultilineCell multilineCell = (MultilineCell)cell;
if (part == "elm.text")
{
return(new Span()
{
Text = multilineCell.Text,
FontSize = -1
});
}
else if (part == "elm.text.multiline")
{
return(new Span()
{
Text = multilineCell.Multiline,
FontSize = -1
});
}
return(null);
}
