public void AddValidation(AutoFormsValidationAttribute validation, View control, string title)
{
if (string.IsNullOrWhiteSpace(title))
{
title = "Item";
}
title = ControlBase.GetLocalizedString(title);
var label = new Label
{
IsVisible = false,
IsEnabled = false,
TextColor = _clrValidationText,
Margin = new Thickness(3, 0, 0, 3)
};
switch (validation)
{
case AutoFormsMaxLengthAttribute max when validation.Type == AutoFormsValidationAttribute.ValidationType.MaxLength:
label.Text = string.Format(ControlBase.GetLocalizedString(AutoFormsConstants.ValidationMaxLength), title, max.Length);
MonitorEntryControl(true, validation, control, label);
break;
case AutoFormsMinLengthAttribute min when validation.Type == AutoFormsValidationAttribute.ValidationType.MinLength:
label.Text = string.Format(ControlBase.GetLocalizedString(AutoFormsConstants.ValidationMinLength), title, min.Length);
break;
case AutoFormsValidationAttribute _ when validation.Type == AutoFormsValidationAttribute.ValidationType.Numeric:
label.Text = string.Format(ControlBase.GetLocalizedString(AutoFormsConstants.ValidationNumeric), title);
break;
case AutoFormsValidationAttribute _ when validation.Type == AutoFormsValidationAttribute.ValidationType.Email:
label.Text = string.Format(ControlBase.GetLocalizedString(AutoFormsConstants.ValidationEmail), title);
MonitorEntryControl(false, validation, control, label);
break;
case AutoFormsValidationAttribute _ when validation.Type == AutoFormsValidationAttribute.ValidationType.Required:
label.Text = string.Format(ControlBase.GetLocalizedString(AutoFormsConstants.ValidationRequired), title);
MonitorEntryControl(false, validation, control, label);
break;
default:
label = null;
break;
}
if (label == null)
{
return;
}
_stack.Children.Add(label);
_validations.Add(new Validation(validation, control, label));
}
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 = ControlBase.GetLocalizedString(attribute.Placeholder),
HeightRequest = attribute.HeightRequest,
};
iv.SetBinding(Editor.TextProperty, new Binding(property.Name, BindingMode.TwoWay));
}
else
{
iv = new Entry
{
Style = style,
Placeholder = ControlBase.GetLocalizedString(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 Button
{
Style = style,
Text = ControlBase.GetLocalizedString(btnAttrib?.Text),
HorizontalOptions = LayoutOptions.CenterAndExpand,
VerticalOptions = LayoutOptions.CenterAndExpand,
};
v.SetBinding(Button.CommandParameterProperty, new Binding("."));
v.SetBinding(Button.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 = "Please Select", Value = -1
});
int index = 0;
foreach (var d in dict)
{
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.Center,
HorizontalOptions = LayoutOptions.Fill,
HorizontalTextAlignment = attribute.HorizontalItemAlignment,
LineBreakMode = LineBreakMode.TailTruncation,
MaxLines = 1,
};
v.SetBinding(Label.TextProperty, new Binding(property.Name, converter: new DisplayConverter()));
break;
}
return(v);
}
