protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (nativeControl == null || Element == null)
{
return;
}
switch (e.PropertyName)
{
case "Renderer":
Element?.SendValueChanged();
break;
case "SelectedSegment":
if (Element.SelectedSegment == -1)
{
// find checked segment and unselect it
var segment = (Windows.UI.Xaml.Controls.RadioButton)nativeControl.SegmentedControlGrid.Children
.Where(x =>
{
var btn = (Windows.UI.Xaml.Controls.RadioButton)x;
return(btn.IsChecked == true);
})
.FirstOrDefault();
segment.IsChecked = false;
return;
}
if (nativeControl.SegmentedControlGrid.Children
.Where(x =>
{
var btn = (Windows.UI.Xaml.Controls.RadioButton)x;
int.TryParse(btn.Tag.ToString(), out var i);
return(i == Element.SelectedSegment);
})
.FirstOrDefault() is Windows.UI.Xaml.Controls.RadioButton checkedButton)
{
checkedButton.IsChecked = true;
}
Element?.SendValueChanged();
break;
case "TintColor":
foreach (var segment in nativeControl.SegmentedControlGrid.Children)
{
((SegmentRadioButton)segment).TintColor = (SolidColorBrush)_colorConverter.Convert(Element.TintColor, null, null, "");
}
break;
case "DisabledColor":
foreach (var segment in nativeControl.SegmentedControlGrid.Children)
{
((SegmentRadioButton)segment).DisabledColor = (SolidColorBrush)_colorConverter.Convert(Element.DisabledColor, null, null, "");
}
break;
case "Height":
// Hack to fix IsEnabled at First Launch
foreach (var uiElement in nativeControl.SegmentedControlGrid.Children)
{
var segment = (SegmentRadioButton)uiElement;
SegmentRadioButton.Refresh(segment);
}
nativeControl.SegmentedControlGrid.BorderBrush = Element.IsEnabled ? (SolidColorBrush)_colorConverter.Convert(Element.TintColor, null, null, "") : (SolidColorBrush)_colorConverter.Convert(Element.DisabledColor, null, null, "");
break;
case "IsEnabled":
foreach (var uiElement in nativeControl.SegmentedControlGrid.Children)
{
var segment = (SegmentRadioButton)uiElement;
segment.IsEnabled = Element.IsEnabled;
}
nativeControl.SegmentedControlGrid.BorderBrush = Element.IsEnabled ? (SolidColorBrush)_colorConverter.Convert(Element.TintColor, null, null, "") : (SolidColorBrush)_colorConverter.Convert(Element.DisabledColor, null, null, "");
break;
case "SelectedTextColor":
SetSelectedTextColor();
break;
}
}
protected override void OnElementChanged(ElementChangedEventArgs <Abstractions.SegmentedControl> e)
{
base.OnElementChanged(e);
if (Control == null)
{
nativeControl = new SegmentedUserControl();
var radioButtonGroupName = Guid.NewGuid().ToString();
var grid = nativeControl.SegmentedControlGrid;
grid.BorderBrush = (SolidColorBrush)_colorConverter.Convert(Element.TintColor, null, null, "");
grid.ColumnDefinitions.Clear();
grid.Children.Clear();
for (var i = 0; i < Element.Children.Count; i++)
{
var segmentButton = new SegmentRadioButton
{
GroupName = radioButtonGroupName,
Style = (Windows.UI.Xaml.Style)nativeControl.Resources["SegmentedRadioButtonStyle"],
Content = Element.Children[i].Text,
Tag = i,
HorizontalAlignment = HorizontalAlignment.Stretch,
VerticalAlignment = VerticalAlignment.Stretch,
BorderBrush = (SolidColorBrush)_colorConverter.Convert(Element.TintColor, null, null, ""),
SelectedTextColor = (SolidColorBrush)_colorConverter.Convert(Element.SelectedTextColor, null, null, ""),
TintColor = (SolidColorBrush)_colorConverter.Convert(Element.TintColor, null, null, ""),
DisabledColor = (SolidColorBrush)_colorConverter.Convert(Element.DisabledColor, null, null, ""),
BorderThickness = i > 0 ? new Windows.UI.Xaml.Thickness(1, 0, 0, 0) : new Windows.UI.Xaml.Thickness(0, 0, 0, 0),
IsEnabled = Element.IsEnabled
};
segmentButton.Checked += SegmentRadioButtonOnChecked;
if (i == Element.SelectedSegment)
{
segmentButton.IsChecked = true;
}
grid.ColumnDefinitions.Add(new Windows.UI.Xaml.Controls.ColumnDefinition
{
Width = new Windows.UI.Xaml.GridLength(1, Windows.UI.Xaml.GridUnitType.Star),
});
grid.Children.Add(segmentButton);
Windows.UI.Xaml.Controls.Grid.SetColumn(segmentButton, i);
}
SetNativeControl(nativeControl);
}
if (e.OldElement != null)
{
DisposeEventHandlers();
}
if (e.NewElement != null)
{
}
}
