Simplify binding to data-driven components
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Key: PIVOT-414
URL: https://issues.apache.org/jira/browse/PIVOT-414
Project: Pivot
Issue Type: New Feature
Components: wtk
Affects Versions: 1.4
Reporter: Greg Brown
Assignee: Greg Brown
Fix For: 1.4.1
Currently, it is difficult to bind complex data types to data-driven components
such as ListView, ListButton, and Spinner. For example, a ListButton may be
used to present the user with a set of options, each of which has a numeric ID
and a text description. The list button displays the text content, but the
value is actually identified by the ID property. It would be ideal to bind only
the ID to the list button, but currently it is only possible to bind an entire
item.
This could be solved by providing a mapping interface that translates between
bound values and list items:
public interface BindMapping {
public int indexOf(List<?> listData, Object item);
public Object get(List<?> listData, int index);
}
Implementations of this interface would perform the translation between the
bound value and the contents of the list.
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