Create a Non-Database-Driven Lookup

Question

Lots of references for creating lookups out there, but all seem to draw their values from a query.

I want to add a lookup to a field that will add items from a list of values that do not come from a table, query, or any other data source.

Such as from a string: "Bananas, Apples, Oranges" ..or a container ["Bananas", "Apples", "Oranges"]

Assume the string/container is a dynamic object. Drawing from an static enum is not a choice.

Is there a way to create lookups on the fly from something other than a data source?

Example code would be a great help, but I'll take hints as well.

Answer 1

It isn't the most graceful solution, but this does work, and it doesn't override or modify any native AX 2012 objects:

Copy the sysLookup form from AX2009 (rename it) and import it into AX 2012.     
We'll call mine myLookupFormCopy.
I did a find/replace of "sysLookup" in the XPO file to rename it.

Create this class method:

public static client void lookupList(FormStringControl _formStringControl, List _valueList, str _columnLabel = '')
{
Args    args;
FormRun formRun;
;

if (_formStringControl && _valueList && _valueList.typeId() == Types::String)
{
    args = new Args(formstr(myLookupFormCopy));
    args.parmObject(_valueList);
    args.parm(_columnLabel);
    formRun = classFactory.formRunClass(args);
    _formStringControl.performFormLookup(formRun);
}
}

In the lookup method for your string control, use:

public void lookup()
{
List    valueList = new List(Types::String);
;

...build your valueList here...

MyClass::lookupList(this, valueList, "List Title");

super();
}