KeySortedList

AddAt Clear CompareItemsBySortKey Init ObjectAttributeAt RemoveAt Reverse SecondarySortKeys SwapElements

Attributes

Class KeySortedList defines no new attributes.

Fields

instance KeySortedList tag;
        sortKey: nilOperation;
    cachedSizes: nilObject;
cachedDescriptions: nilObject;
   reverseOrder: false;
end instance;

Define Class KeySortedList;
    inherits from ObjectList, SortedList, HasSortKeys;
    
    field sortKey: OperationNumber, getter, setter;
    field cachedSizes: IntegerList;
        // parallel list of sizes used to make sorting by size much faster
    field cachedDescriptions: ObjectList;
        // parallel list of descriptions used to make sorting by description much faster
    field reverseOrder: Boolean, getter, setter;
    
    overrides CompareItemsBySortKey;
        // implements sorting for operation_TinyImage,
        // operation_ContentDescription, operation_DateText,
        // and operation_SizeInKBytes
    
    overrides SecondarySortKeys;
        // fills in list with fixed order: operation_TinyImage,
        // operation_ContentDescription, operation_DateText,
        // and operation_SizeInKBytes
    
    overrides AddAt;
        // overridden to cache size of new elemeent
    overrides Clear;
        // overridden to clear list of cached sizes
    overrides Init;
        // overridden to set up cached size list
    overrides RemoveAt;
        // overridden to remove cached size of removed element
    overrides Reverse;
        // overridden to reverse cached size list as well as self
    overrides SwapElements;
        // overridden to swap cached sizes as well as elements
    overrides ObjectAttributeAt;
        // overridden to return cached sizes for SizeInKBytess

end class;