LaSt viewer preferences

Author(s): Per Cederberg.

Both the LaSt layout rules and the WOF queries may contain references to specific viewer preferences. These will normally be given to the LaSt engine upon processing a RadioWeb template.

This module contains the interface for setting and accessing the viewer preferences structure. It also interprets the XML structure in which the preferences are sent to the LaSt engine.

• Usage and interface (viewer)
• Documentation on exports (viewer)

Usage and interface (viewer)

Documentation on exports (viewer)

PREDICATE: init_viewer_preferences/1:

Usage: init_viewer_preferences(TermLs)

• Description: Removes all the previously available viewer preferences and inserts new ones from the TermLs. The TermLs is a list of PiLLoW terms following the format elem(Name, [value=Value]). Any other terms will be ignored.
• Should hold at call time: TermLs is a list. (list/1)

PREDICATE: viewer_preference/2:

Usage: viewer_preference(Name,Value)

• Description: Returns the Value associated with a specific Name.
• Should hold at call time: Name is an atom. (atm/1) Value is a free variable. (var/1)
• Should hold upon exit: Value is an atom. (atm/1)

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