A FilePicker may contain additional elements according to the needs
of the different applications. These additional elements can be
addressed by this interface.
Set the value of an additional element within a FilePicker.
Parameter ControlId
Identifies the element which value is to be set.
Parameter aControlAction
Specifies an action to perform with the given value.
aControlAction has to be one of the values defined in ControlActions.
Not all of the values are valid for all controls.
To add a new filter to the FilePicker use the interface XFilterManager, but
optionally an implementation may also support adding new filter using this
method.
Parameter aValue
The value to set. For checkboxes aValue should be a boolean value that
should be true if the checkbox should be checked and false otherwise.
Get the value of an additional element within a FilePicker
Parameter aControlId
Identifies the element for which value is requested.
Parameter aControlAction
Specifies which value to retrieve.
aControlAction has to be one of the values defined in ControlActions.
Not all of the values are valid for all controls.
Returns
The value of the specified element. If the specified control
is a checkbox the returned value is a boolean that is true
if the checkbox is checked false otherwise.
If the specified element doesn't exist or the specified element
doesn't support the specidfied control action an empty any will be
returned.