CodeSnip Old Code (SVN)

Modified to use TObjectListEx from ULists unit instead of the VCL's TObjectList.

Reimplemented tree view building code to use TGrouping and TGroupItem classes and descendant classes to group snippets as required before creating the required tree views.

Added new classes:
* TObjectListEnum - enumerator for various object lists
* TObjectListEx - an enhanced TObjectList with new enumerator and additional helper methods.
* TSortedObjectList - maintains a sorted list of objects using a provided TObjectCompare comparison method.
* TSortedObjectDictionary - a dictionary mapping key objects onto value objects which maintains a sorted list of keys using a provided TObjectCompare method.
Also modified TIntegerList to use TObjectListEx instead of TObjectList.

Added new UGroups unit that defines classes that group snippets together in different ways.

Corrected error in TSnippets.RemoveChangeEventHandler: code was *adding* the event handler rather than removing it.

Added reference to FrSelectSnippetsBase frame that now contains base class for snippet selection frame.

Added some new to do items.

Added new FrSelectSnippetsBase unit.

Reimplemented TSelectSnippetsFrame and TSelectUserSnippetsFrame in terms of new abstract TSelectSnippetsBaseFrame class.

New abstract base class for frames that display categorised snippets in a tree view where each snippet or whole category of snippets can be selected by means of check boxes. Code was derived from that formerly in FrSelectSnippets unit. Subclasses must override methods that determine which categories and snippets are displayed.