public static BaseValueViewModel Create <TObject, TRole>(IViewModelFactory mdlFactory, IZetboxContext ctx, IFrozenContext frozenCtx, ViewModel parent, string label, IDataObject obj, Expression <Func <TObject, PartyRole> > property)
where TRole : class, PartyRole
where TObject : class, IDataObject
{
var me = (MemberExpression)property.Body;
var propInfo = (PropertyInfo)me.Member;
var initialPartyRole = (PartyRole)propInfo.GetValue(obj, null);
var mdl = new ObjectReferenceValueModel(label, "", false, false, (ObjectClass)NamedObjects.Base.Classes.Zetbox.Basic.Parties.Party.Find(frozenCtx));
mdl.Value = initialPartyRole != null ? initialPartyRole.Party : null;
mdl.PropertyChanged += (s, e) =>
{
if (e.PropertyName == "Value")
{
if (mdl.Value != null)
{
var party = (Party)mdl.Value;
var partyRole = party.PartyRole.OfType <TRole>().SingleOrDefault();
if (partyRole == null)
{
partyRole = ctx.Create <TRole>();
partyRole.Party = party;
}
propInfo.SetValue(obj, partyRole, null);
}
else
{
propInfo.SetValue(obj, null, null);
}
}
};
return(mdlFactory.CreateViewModel <ObjectReferenceViewModel.Factory>().Invoke(ctx, parent, mdl));
}
public MergeObjectsTaskViewModel(IViewModelDependencies appCtx, IZetboxContext dataCtx, ViewModel parent, IDataObject target, IDataObject source)
: base(appCtx, dataCtx, parent)
{
if (target == null && source == null) throw new ArgumentException("Either source or target must not be null");
ObjectClass = (source ?? target).GetObjectClass(FrozenContext);
_targetMdl = new ObjectReferenceValueModel(MergeObjectsTaskViewModelResources.Target, MergeObjectsTaskViewModelResources.Target_Tooltip, false, false, ObjectClass);
_targetMdl.Value = target;
_targetMdl.PropertyChanged += _mdl_PropertyChanged;
_sourceMdl = new ObjectReferenceValueModel(MergeObjectsTaskViewModelResources.Source, MergeObjectsTaskViewModelResources.Source_Tooltip, false, false, ObjectClass);
_sourceMdl.Value = source;
var ws = GetWorkspace() as IContextViewModel;
if(ws == null)
{
throw new InvalidOperationException("A MergeObjectsTaskViewModel must be bound to a IContextViewModel workspace");
}
ws.Saving += OnSaving;
ws.Saved += OnSaved;
}
public static DialogCreator AddObjectReference(this DialogCreator c, object key, string label, Zetbox.App.Base.ObjectClass cls, IDataObject value = null, bool allowNullInput = false, bool isReadOnly = false, ControlKind requestedKind = null, ViewModelDescriptor vmdesc = null, string description = null, string helpText = null)
{
if (c == null) throw new ArgumentNullException("c");
if (key == null) throw new ArgumentNullException("key");
var mdl = new ObjectReferenceValueModel(label, description, allowNullInput, isReadOnly, cls);
mdl.Value = value;
mdl.HelpText = helpText;
BaseValueViewModel vmdl;
if (vmdesc != null)
vmdl = c.ViewModelFactory.CreateViewModel<ObjectReferenceViewModel.Factory>(vmdesc).Invoke(c.DataContext, null, mdl);
else
vmdl = c.ViewModelFactory.CreateViewModel<ObjectReferenceViewModel.Factory>().Invoke(c.DataContext, null, mdl);
if (requestedKind != null)
vmdl.RequestedKind = requestedKind;
c.Add(key, vmdl);
return c;
}