protected override bool UpdateControl(bool setup, ControlType?controlType, View control, IReflectionProperties controlProps, LitUiAttribute attr, PropertyInfo propInfo, object data, IReflectionProperties <LitUiAttribute> dataProps)
{
switch (controlType)
{
case ControlType.None:
return(false);
case ControlType.Label:
{
if (control is Label label)
{
if (setup)
{
SetupLabel(label, controlProps, attr, propInfo);
}
return(UpdateLabel(label, controlProps, attr, propInfo, data, dataProps));
}
return(false);
}
case ControlType.Button:
{
if (control is Button button)
{
if (setup)
{
SetupButton(button, controlProps, attr, propInfo, data, dataProps);
}
return(UpdateButton(button, controlProps, data, dataProps));
}
return(false);
}
case ControlType.Container:
{
if (control is Layout <View> container)
{
if (setup)
{
SetupContainer(container, controlProps, attr, propInfo, data, dataProps);
}
return(UpdateContainer(container, controlProps, data, dataProps));
}
return(false);
}
default:
return(false);
}
}
/// <summary>
/// Common setup for a control.
/// </summary>
private static void SetupCommon(View control, IReflectionProperties controlProps, LitUiAttribute attr, PropertyInfo propInfo)
{
if (attr != null)
{
}
}
/// <summary>
/// Setup a container control.
/// </summary>
private static void SetupContainer(Layout <View> control, IReflectionProperties controlProps, LitUiAttribute attr, PropertyInfo containerPropInfo,
object data, IReflectionProperties <LitUiAttribute> dataProps)
{
SetupCommon(control, controlProps, attr, containerPropInfo);
if (dataProps != null)
{
for (var step = 1; step <= 2; step++)
{
foreach (var pair in dataProps)
{
var reflectionProperty = pair.Value;
var propInfo = reflectionProperty.PropertyInfo;
var propAttr = reflectionProperty.Attribute;
switch (step)
{
case 1:
{
if (propAttr.HasGridSpecification && control is Grid grid)
{
var maxCol = propAttr.Col + (propAttr.ColSpan > 0 ? propAttr.ColSpan - 1 : 0);
while (grid.ColumnDefinitions.Count <= maxCol)
{
grid.ColumnDefinitions.Add(new ColumnDefinition());
}
var maxRow = propAttr.Row + (propAttr.RowSpan > 0 ? propAttr.RowSpan - 1 : 0);
while (grid.RowDefinitions.Count <= maxRow)
{
grid.RowDefinitions.Add(new RowDefinition());
}
}
}
break;
case 2:
{
var propValue = propInfo.GetValue(data, null);
var isVisualProperty = TypeHelper.IsSubclassOf(propInfo.PropertyType, typeof(VisualProperty <>));
if (isVisualProperty)
{
if (propValue == null)
{
propValue = Activator.CreateInstance(propInfo.PropertyType);
propInfo.SetValue(data, propValue, null);
}
}
var visualProp = isVisualProperty ? propValue as VisualProperty : null;
var childData = isVisualProperty ? visualProp.GetData() : propAttr.OwnDataContext ? propValue : data;
var child = CreateControl(control, propAttr, propInfo, childData);
if (isVisualProperty)
{
visualProp.Bind(child);
visualProp.PropertyChanged += delegate(object sender, PropertyChangedEventArgs e)
{
UpdateControl(sender as View, propAttr, propInfo, visualProp.GetData(), false);
};
}
}
break;
}
}
}
}
}
/// <summary>
/// Setup a Button control.
/// </summary>
private static void SetupButton(Button control, IReflectionProperties controlProps, LitUiAttribute attr, PropertyInfo propInfo,
object data, IReflectionProperties <LitUiAttribute> dataProps)
{
SetupCommon(control, controlProps, attr, propInfo);
if (attr != null)
{
var text = attr.Text ?? attr.GetAutoCommandParameter(propInfo);
UpdatePropertyValue(control, controlProps, nameof(control.Text), text, true);
UpdatePropertyValue(control, controlProps, nameof(control.HorizontalOptions), GetHorizontalOptions(attr.LayoutMode, attr.ContentLayout), true);
UpdatePropertyValue(control, controlProps, nameof(control.VerticalOptions), GetVerticalOptions(attr.LayoutMode, attr.ContentLayout), true);
control.Clicked += delegate(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(attr.OnClickCommand))
{
if (dataProps.ContainsKey(attr.OnClickCommand))
{
var cmdPropInfo = dataProps[attr.OnClickCommand].PropertyInfo;
var parameter = attr.CommandParameter ?? attr.GetAutoCommandParameter(propInfo);
var ev = new ControlEvent
{
Sender = sender,
CommandName = attr.OnClickCommand,
CommandParameter = parameter,
Property = dataProps[propInfo.Name]
};
cmdPropInfo.SetValue(data, ev, null);
}
}
};
}
}
/// <summary>
/// Update a Label control.
/// </summary>
private static bool UpdateLabel(Label control, IReflectionProperties controlProps, LitUiAttribute attr, PropertyInfo propInfo,
object data, IReflectionProperties <LitUiAttribute> dataProps)
{
var changed = false;
if (attr != null)
{
switch (attr.Property)
{
case TargetProperty.None:
break;
case TargetProperty.Text:
UpdatePropertyValue(control, controlProps, nameof(control.Text), data, true);
break;
}
}
if (dataProps != null)
{
foreach (var p in dataProps)
{
if (p.Value.Attribute.CtrlType != ControlType.None)
{
switch (p.Value.Attribute.Property)
{
}
}
}
}
return(changed);
}
/// <summary>
/// Setup a Label control.
/// </summary>
private static void SetupLabel(Label control, IReflectionProperties controlProps, LitUiAttribute attr, PropertyInfo propInfo)
{
SetupCommon(control, controlProps, attr, propInfo);
if (attr != null)
{
UpdatePropertyValue(control, controlProps, nameof(control.Text), attr.Text, true);
UpdatePropertyValue(control, controlProps, nameof(control.HorizontalOptions), GetHorizontalOptions(attr.LayoutMode, attr.ContentLayout), true);
UpdatePropertyValue(control, controlProps, nameof(control.VerticalOptions), GetVerticalOptions(attr.LayoutMode, attr.ContentLayout), true);
}
}
