private FieldPanel AddNewFieldPanel(FormularFieldDescriptor desc)
{
var field = new FieldPanel(desc);
field.CanEdit = CanEditFields;
Controls.Add(field);
field.Locked = Locked;
field.Change += (sender, args) =>
{
if (Changed != null)
{
Changed(this, Formular);
}
};
return(field);
}
protected bool LayoutByFormular(MessageFormular formular, bool keepUnused)
{
this.SuspendLayout();
var empty = Enumerable.Empty <FieldPanel>();
var prev = FieldPanels.ToList();
var unused = (
from panel in prev
where panel.IsFaulty && panel.CanEdit
select panel
).Concat(
from panel in prev
where !panel.IsFaulty && !panel.IsEmpty
where !formular.FieldNames.Contains(panel.Descriptor.Name)
select panel
).Distinct().ToList();
var remove = (
from panel in prev
where !panel.IsFaulty
where panel.IsEmpty || !formular.FieldNames.Contains(panel.Descriptor.Name)
select panel
).Concat(keepUnused? empty : unused).Distinct().ToList();
// keep all that will
var remain = (
from panel in prev
where !panel.IsFaulty
where !panel.IsEmpty
where formular.FieldNames.Contains(panel.Descriptor.Name)
select panel
).Concat(keepUnused? unused : empty).Distinct().ToList();
var currentDesc = (
from panel in prev
where !panel.IsEmpty
select panel.Descriptor.Name
);
var fresh = (
from field in formular.FieldDescriptors
where !currentDesc.Contains(field.Name)
select field
).ToList();
var maxCount = remove.Count();
var counter = maxCount;
foreach (var descriptor in fresh)
{
// if lingering panels available, recycle it or else instanciate new one
if (counter > 0)
{
FieldPanel revive = remove[maxCount - counter];
revive.Descriptor = descriptor; // will modify the checkbox and description text
revive.Visible = true;
revive.Locked = Locked;
counter--;
}
else
{
AddNewFieldPanel(descriptor);
}
}
// cleanup: just keep them lingering around, recycle when needed. should speed up gui
while (counter > 0)
{
FieldPanel panel = remove[maxCount - counter];
if (panel != null && !(panel.IsFaulty && keepUnused))
{
panel.IsEmpty = true; // removes Checked as well
}
counter--;
}
// update remaining fields
foreach (FieldPanel panel in remain)
{
if (!panel.IsFaulty) // don't touch faulty panels, user might want to fix them later.
{
var desc = formular[panel.Descriptor.Name];
desc.IsRequired = panel.Checked;
panel.Descriptor = desc; // overwrite to stay in sync with the node's central formular
}
}
this.ResumeLayout();
return(true);
}
private FieldPanel AddNewFieldPanel(FormularFieldDescriptor desc)
{
var field = new FieldPanel(desc);
field.CanEdit = CanEditFields;
Controls.Add(field);
field.Locked = Locked;
field.Change += (sender, args) =>
{
if (Changed != null) Changed(this, Formular);
};
return field;
}
