protected virtual void AddNewObject(LookUpEditEx lookup)
{
ShowViewParameters svp = new ShowViewParameters();
IObjectSpace newObjectViewObjectSpace = lookup.Properties.Helper.Application.CreateObjectSpace(lookup.Properties.Helper.LookupObjectTypeInfo.Type);
object newObject = newObjectViewObjectSpace.CreateObject(lookup.Properties.Helper.LookupObjectTypeInfo.Type);
lookupObjectView = lookup.Properties.Helper.Application.CreateDetailView(newObjectViewObjectSpace, newObject, true);
svp.CreatedView = lookupObjectView;
EventHandler committedEventHandler = (s, e) => {
lookup.EditValue = lookup.Properties.Helper.ObjectSpace.GetObject(lookupObjectView.CurrentObject);
if (lookup.Properties.DataSource != null)
{
((IList)lookup.Properties.DataSource).Add(lookup.EditValue);
}
};
EventHandler disposedEventHandler = null;
disposedEventHandler = (s, e) => {
IObjectSpace os = (IObjectSpace)s;
os.Disposed -= disposedEventHandler;
os.Committed -= committedEventHandler;
};
newObjectViewObjectSpace.Committed += committedEventHandler;
newObjectViewObjectSpace.Disposed += disposedEventHandler;
lookup.Properties.Helper.Application.ShowViewStrategy.ShowView(svp, new ShowViewSource(null, null));
}
private void properties_Enter(object sender, EventArgs e)
{
LookUpEditEx lookup = (LookUpEditEx)sender;
InitializeDataSource(lookup);
UpdateButtons(lookup);
}
protected virtual void InitializeDataSource(LookUpEditEx lookup)
{
if (lookup != null && lookup.Properties != null && lookup.Properties.Helper != null)
{
lookup.InitializeDataSource();
}
}
private void UpdateButtons(LookUpEditEx lookup)
{
bool enabled = (lookup.EditValue != null) && (lookup.EditValue != DBNull.Value);
lookup.Properties.Buttons[1].Enabled = enabled;
lookup.Properties.Buttons[3].Enabled = enabled;
}
protected virtual void OpenCurrentObject(LookUpEditEx lookup)
{
ShowViewParameters svp = new ShowViewParameters();
IObjectSpace openObjectViewObjectSpace = lookup.Properties.Helper.Application.CreateObjectSpace();
object targetObject = openObjectViewObjectSpace.GetObject(lookup.EditValue);
if (targetObject != null)
{
EventHandler committedEventHandler = (s, e) => {
if (lookupObjectView != null)
{
lookup.EditValue = lookup.Properties.Helper.ObjectSpace.GetObject(lookupObjectView.CurrentObject);
}
};
EventHandler disposedEventHandler = null;
disposedEventHandler = (s, e) => {
IObjectSpace os = (IObjectSpace)s;
os.Disposed -= disposedEventHandler;
os.Committed -= committedEventHandler;
};
openObjectViewObjectSpace.Committed += committedEventHandler;
openObjectViewObjectSpace.Disposed += disposedEventHandler;
lookupObjectView = lookup.Properties.Helper.Application.CreateDetailView(openObjectViewObjectSpace, targetObject, true);
svp.CreatedView = lookupObjectView;
lookup.Properties.Helper.Application.ShowViewStrategy.ShowView(svp, new ShowViewSource(null, null));
}
}
private void RefreshCore(LookUpEditEx lookup)
{
if (lookup != null)
{
UpdateButtons(lookup);
lookup.RefreshEditValue();
lookup.UpdateDisplayText();
lookup.Refresh();
}
}
private void properties_ButtonClick(object sender, ButtonPressedEventArgs e)
{
LookUpEditEx lookup = (LookUpEditEx)sender;
string tag = Convert.ToString(e.Button.Tag);
if (tag == OpenButtonTag)
{
OpenCurrentObject(lookup);
}
if (tag == MinusButtonTag)
{
ClearCurrentObject(lookup);
}
if (tag == AddButtonTag)
{
AddNewObject(lookup);
}
}
protected virtual void ClearCurrentObject(LookUpEditEx lookup)
{
lookup.EditValue = null;
DevExpress.ExpressApp.Win.Core.BindingHelper.EndCurrentEdit(lookup);
}
private void properties_Closed(object sender, ClosedEventArgs e)
{
LookUpEditEx lookup = (LookUpEditEx)sender;
UpdateButtons(lookup);
}
private void properties_EditValueChanged(object sender, EventArgs e)
{
LookUpEditEx lookup = (LookUpEditEx)sender;
UpdateButtons(lookup);
}