public bool BeginEdit(ItemInfo rowInfo)
{
var canStartEdit = true;
if (this.IsEditing && rowInfo.Item != this.EditItem)
{
////TODO behavior for default action.
canStartEdit = this.Owner.CommitEdit();
}
if (this.Owner.UserEditMode == DataGridUserEditMode.None || !canStartEdit)
{
return(false);
}
this.IsEditing = true;
this.InitializeEditOperation(rowInfo);
DelegateUpdate <UpdateFlags> update = new DelegateUpdate <UpdateFlags>(() =>
{
if (this.Owner.UserEditMode == DataGridUserEditMode.External)
{
if (this.Owner.ExternalEditor != null)
{
this.Owner.ExternalEditor.EditCommitted += this.OnExternalEditorCommit;
this.Owner.ExternalEditor.EditCancelled += this.OnExternalEditorCancel;
var frElement = this.Owner.ExternalEditor as FrameworkElement;
if (frElement != null)
{
frElement.Height = this.Owner.ActualHeight;
var id = this.Owner.ExternalEditor.Position == ExternalEditorPosition.Left ? DataGridFlyoutId.EditorLeft : DataGridFlyoutId.EditorRight;
this.Owner.ContentFlyout.Show(id, frElement);
}
}
this.Owner.ExternalEditor.BeginEdit(this.EditItem, this.Owner);
}
else
{
this.Owner.Model.BeginEdit(rowInfo);
this.Owner.EditRowLayer.ScheduleFirstEditorForFocus();
}
this.Owner.Model.CurrentDataProvider.CommitEditOperation(this.EditItem);
// hide the CurrentItem decoration
this.Owner.visualStateService.UpdateCurrentDecoration(-1);
})
{
Flags = UpdateFlags.AffectsContent
};
this.Owner.updateService.RegisterUpdate(update);
return(true);
}
public bool CancelEdit(ActionTrigger trigger)
{
if (!this.IsEditing)
{
return(false);
}
this.IsEditing = false;
var currentEditMode = this.operation.EditMode;
DelegateUpdate <UpdateFlags> update = new DelegateUpdate <UpdateFlags>(() =>
{
if (currentEditMode == DataGridUserEditMode.External)
{
var id = this.Owner.ExternalEditor.Position == ExternalEditorPosition.Left ? DataGridFlyoutId.EditorLeft : DataGridFlyoutId.EditorRight;
this.Owner.ContentFlyout.Hide(id);
if (trigger != ActionTrigger.ExternalEditor)
{
this.Owner.ExternalEditor.CancelEdit();
}
}
else
{
this.Owner.Model.CancelEdit();
this.Owner.EditRowLayer.EditorLayoutSlots.Clear();
}
this.Owner.Model.CurrentDataProvider.CommitEditOperation(this.EditItem);
})
{
Flags = UpdateFlags.AffectsContent
};
this.Owner.updateService.RegisterUpdate(update);
foreach (var pair in this.operation.OriginalValues)
{
pair.Key.SetValueForInstance(this.operation.EditItemInfo.Item, pair.Value);
}
if (this.operation.EditMode == DataGridUserEditMode.Inline)
{
this.Owner.EditRowLayer.EditorLayoutSlots.Clear();
}
this.operation = null;
// Return the focus to the owning grid.
this.Owner.TryFocus(FocusState.Programmatic, true);
return(true);
}
public bool CommitEdit(ActionTrigger trigger)
{
if (!this.ShouldCommitEdit())
{
return(false);
}
this.IsEditing = false;
DelegateUpdate <UpdateFlags> update = new DelegateUpdate <UpdateFlags>(() =>
{
if (this.Owner.UserEditMode == DataGridUserEditMode.External)
{
var id = this.Owner.ExternalEditor.Position == ExternalEditorPosition.Left ? DataGridFlyoutId.EditorLeft : DataGridFlyoutId.EditorRight;
this.Owner.ContentFlyout.Hide(id);
if (trigger != ActionTrigger.ExternalEditor)
{
this.Owner.ExternalEditor.CommitEdit();
}
}
else
{
this.Owner.Model.CommitEdit();
this.Owner.EditRowLayer.EditorLayoutSlots.Clear();
}
this.Owner.Model.CurrentDataProvider.CommitEditOperation(this.EditItem);
})
{
Flags = UpdateFlags.AffectsContent,
Priority = CoreDispatcherPriority.Low
};
// Focusing the grid will force the Text property of all textboxes to be pushed to the underlying ViewModel.
this.Owner.TryFocus(FocusState.Programmatic, true);
this.Owner.updateService.RegisterUpdate(update);
update = new DelegateUpdate <UpdateFlags>(() =>
{
if (this.Owner.UserEditMode == DataGridUserEditMode.External)
{
this.Owner.CurrencyService.RefreshCurrentItem(true);
}
else
{
this.Owner.EditRowLayer.EditorLayoutSlots.Clear();
this.Owner.FrozenEditRowLayer.EditorLayoutSlots.Clear();
this.Owner.CurrencyService.RefreshCurrentItem(true);
}
})
{
RequiresValidMeasure = true,
Priority = CoreDispatcherPriority.Low
};
this.Owner.updateService.RegisterUpdate(update);
return(true);
}
