protected override FrameworkElement CreateEditingElement()
{
this._cb = new ComboBox();
this._cb.Name = this.Meta.Name;
this._cb.SelectedValuePath = "EnumValue";
this._cb.DisplayMemberPath = "TranslatedLabel";
this.ResetBinding(this._cb);
//cb.Items.Clear();
var propertyType = this.Meta.PropertyMeta.Runtime.PropertyType;
foreach (var item in EnumViewModel.GetByEnumType(propertyType))
{
this._cb.Items.Add(item);
}
if (TypeHelper.IsNullable(propertyType))
{
//这种组合下，不能随意录入值、可以选择文本、按上下键选择项。缺点是不能通过输入搜索项。
this._cb.IsEditable = true;
this._cb.IsReadOnly = true;
this._cb.PreviewKeyDown += On_cb_PreviewKeyDown;
}
this.AddReadOnlyComponent(this._cb, ComboBox.IsEnabledProperty, false);
this.SetAutomationElement(this._cb);
this._cb.SelectionChanged += On_cb_SelectionChanged;
this._cb.DropDownOpened += On_cb_DropDownOpened;
this._cb.DataContextChanged += On_cb_DataContextChanged;
return(this._cb);
}
public EnumBoxConfig(Type enumType)
{
this.queryMode = "local";
this.displayField = "text";
this.valueField = "text";
var models = EnumViewModel.GetByEnumType(enumType);
this.store = new ArrayStoreConfig
{
fields = new string[] { "text", "value" },
data = models.Select(vm => new EnumModel
{
text = vm.Label,
value = (int)(object)vm.EnumValue
}).ToArray()
};
}