public SingleSelectionDescriptorBuilderBase(
IVMDescriptor itemDescriptor,
Func <TSourceObject, TItemSource, bool> isActiveFilter
)
{
WithProperties((d, b) => {
var v = b.GetPropertyBuilder();
d.SelectedItem = v.VM.DelegatesTo(
(vm) => vm.GetSelectedItem(),
(vm, val) => vm.SetSelectedItem(val)
);
d.AllItems = v
.Collection
.PopulatedWith(vm => {
IEnumerable <TItemSource> selectableItems = SelectionHelpers
.GetSelectableSourceItems <TSourceObject, TItemSource>(vm);
return(selectableItems.Select(x => vm.GetItemVM(x)));
})
.With(itemDescriptor);
});
WithViewModelBehaviors(b => {
b.OverrideUpdateFromSourceProperties(
x => x.AllSourceItems,
x => x.SelectedSourceItem,
x => x.AllItems,
x => x.SelectedItem
);
b.OverrideUpdateSourceProperties(
x => x.SelectedSourceItem
);
b.AppendBehavior(
new SelectionItemViewModelCacheBehavior <TItemSource, TItemVM>(itemDescriptor)
);
b.PrependBehavior(new ItemProviderBehavior <TSourceObject, TItemSource>()
{
IsActiveFilter = isActiveFilter
});
});
WithBehaviors(b => {
b.Property(x => x.AllSourceItems).IsCached();
b.Property(x => x.SelectedItem).PrependBehavior(new SelectedItemRefreshBehavior <TItemVM>());
// TODO: Make this configurable.
b.Property(x => x.SelectedSourceItem).RequiresLoadedProperty(x => x.AllSourceItems);
});
WithValidators(b => {
b.EnableParentValidation(x => x.SelectedItem);
});
}
public MultiSelectionDescriptorBuilderBase(
IVMDescriptor itemDescriptor,
Func <TSourceObject, TItemSource, bool> isActiveFilter
)
{
WithProperties((d, b) => {
var v = b.GetPropertyBuilder();
d.SelectedItems = v
.Collection
.Wraps(x => x.SelectedSourceItems)
.With <TItemVM>(itemDescriptor);
d.AllItems = v
.Collection
.PopulatedWith(vm => {
IEnumerable <TItemSource> selectableItems = SelectionHelpers
.GetSelectableSourceItems <TSourceObject, TItemSource>(vm);
return(selectableItems.Select(x => vm.GetItemVM(x)));
})
.With(itemDescriptor);
});
WithViewModelBehaviors(b => {
b.OverrideUpdateFromSourceProperties(
x => x.AllSourceItems,
x => x.SelectedSourceItems,
x => x.AllItems,
x => x.SelectedItems
);
b.OverrideUpdateSourceProperties(
x => x.SelectedSourceItems
);
b.AppendBehavior(
new SelectionItemViewModelCacheBehavior <TItemSource, TItemVM>(itemDescriptor)
);
b.AppendBehavior(new ItemProviderBehavior <TSourceObject, TItemSource>()
{
IsActiveFilter = isActiveFilter
});
});
WithBehaviors(b => {
b.Property(x => x.SelectedItems).Enable(
PropertyBehaviorKeys.ValueAccessor,
new SelectedItemsAccessorBehavior <TVM, TItemVM, TItemSource>()
);
// This behavior allows a bound comobox to assign a new list to the 'SelectedItems'
// property every time the selection changes.
b.Property(x => x.SelectedItems).Enable(
PropertyBehaviorKeys.DisplayValueAccessor,
new SettableListDisplayValueBehavior <TItemVM>()
);
b.Property(x => x.SelectedItems).AddChangeHandler((vm, args) => {
vm.RaisePropertyChangedForSelectedItems(); // HACK!
});
b.Property(x => x.AllSourceItems).IsCached();
b.Property(x => x.SelectedItems).SupportsDisplayValueConversion();
b.Property(x => x.SelectedItems).PrependBehavior(new SelectedItemsRefreshBehavior <TItemVM>());
// TODO: Make this configurable.
b.Property(x => x.SelectedSourceItems).RequiresLoadedProperty(x => x.AllSourceItems);
});
WithValidators(b => {
b.EnableParentValidation(x => x.SelectedItems);
b.EnableParentViewModelValidation();
});
}
