protected override View CreateControl(string bindingName, Type fieldType)
{
if (fieldType != typeof(bool) && fieldType != typeof(bool?))
{
Debug.WriteLine($"field:{bindingName} error. Wrong type {fieldType.ToString()} should be bool");
return(null);
}
_checkbox = new Checkbox
{
};
_checkbox.SetBinding(Checkbox.CheckedProperty, new Binding(bindingName, BindingMode.TwoWay, new NullableConverter(), fieldType));
return(_checkbox);
}
View CreateControlView(
PropertyInfo property,
AutoFormsListItemAttribute attribute,
ControlList listControl)
{
Style style = null;
if (string.IsNullOrEmpty(attribute.ItemStyle) == false &&
Application.Current.Resources.TryGetValue(attribute.ItemStyle, out object obj))
{
style = (Style)obj;
}
View v = null;
switch (attribute.Type)
{
case AutoFormsType.DateTime:
v = new DatePicker
{
Style = style
};
v.SetBinding(DatePicker.DateProperty, new Binding(property.Name, BindingMode.TwoWay, new DateTimeConverter(), property.PropertyType));
break;
case AutoFormsType.Entry:
var maxLength = property.GetAttribute <AutoFormsMaxLengthAttribute>()?.Length ?? 0;
InputView iv;
if (attribute.HeightRequest > 0)
{
iv = new Editor
{
Style = style,
Placeholder = attribute.Placeholder,
HeightRequest = attribute.HeightRequest,
};
iv.SetBinding(Editor.TextProperty, new Binding(property.Name, BindingMode.TwoWay));
}
else
{
iv = new Entry
{
Style = style,
Placeholder = attribute.Placeholder,
};
iv.SetBinding(Entry.TextProperty, new Binding(property.Name, BindingMode.TwoWay));
}
if (maxLength > 0)
{
iv.MaxLength = maxLength;
}
v = iv;
break;
case AutoFormsType.Checkbox:
v = new Checkbox
{
HorizontalOptions = LayoutOptions.Center,
};
v.SetBinding(Checkbox.CheckedProperty, new Binding(property.Name, BindingMode.TwoWay));
break;
case AutoFormsType.Button:
var btnAttrib = property.GetAttribute <AutoFormsButtonAttribute>();
if (btnAttrib != null &&
string.IsNullOrEmpty(btnAttrib.ButtonStyle) == false &&
Application.Current.Resources.TryGetValue(btnAttrib.ButtonStyle, out object btnObj))
{
style = (Style)btnObj;
}
v = new ImageButton
{
Style = style,
Text = btnAttrib?.Text,
HorizontalOptions = LayoutOptions.CenterAndExpand,
VerticalOptions = LayoutOptions.CenterAndExpand,
};
v.SetBinding(ImageButton.CommandParameterProperty, new Binding("."));
v.SetBinding(ImageButton.CommandProperty, new Binding(property.Name));
break;
case AutoFormsType.Combo:
v = new Picker();
var propertyType = property.PropertyType;
var t = Nullable.GetUnderlyingType(propertyType);
if (t != null && t.IsEnum)
{
propertyType = t;
var dict = EnumHelper.ToDictionary(propertyType);
var items = new List <ControlCombo.EnumItem>();
items.Add(new ControlCombo.EnumItem {
Title = "--", Value = -1
});
int index = 0;
foreach (var d in dict)
{
if (d.Value != "Unspecified" && d.Key != -1)
{
items.Add(new ControlCombo.EnumItem {
Title = d.Value, Value = index++
});
}
}
var picker = v as Picker;
picker.ItemsSource = items;
picker.SetBinding(
Picker.SelectedIndexProperty,
new Binding(property.Name, BindingMode.TwoWay, new ControlCombo.EnumItemConverter(), propertyType));
}
else if (property.PropertyType.IsEnum)
{
var picker = v as Picker;
var dict = EnumHelper.ToDictionary(property.PropertyType);
picker.ItemsSource = dict.Values.ToList();
picker.SetBinding(
Picker.SelectedIndexProperty,
new Binding(property.Name, BindingMode.TwoWay, new EnumConverter(), property.PropertyType));
}
break;
default:
style = style ?? listControl?.LabelStyle ?? null;
v = new Label
{
Style = style,
VerticalOptions = LayoutOptions.CenterAndExpand,
VerticalTextAlignment = TextAlignment.Start,
HorizontalOptions = LayoutOptions.StartAndExpand,
HorizontalTextAlignment = attribute.HorizontalItemAlignment,
LineBreakMode = LineBreakMode.TailTruncation,
MaxLines = 1,
};
v.SetBinding(Label.TextProperty, new Binding(property.Name, converter: new DisplayConverter()));
break;
}
return(v);
}
