note description: "[ Item for use with EV_TREE. A tree item is also a tree-item container because if we create a tree-item with a tree-item as parent, the parent will become a subtree. ]" legal: "See notice at end of class." status: "See notice at end of class." keywords: "tree, item, leaf, node, branch" date: "$Date$" revision: "$Revision$" class EV_TREE_ITEM inherit EV_TREE_NODE redefine implementation, is_in_default_state end create default_create, make_with_text feature -- Contract support is_expandable: BOOLEAN -- Is `Current' able to expand or collapse. do Result := implementation.parent_tree_i /= Void and count > 0 end feature {NONE} -- Contract support is_in_default_state: BOOLEAN -- Is `Current' in its default state? do Result := Precursor {EV_TREE_NODE} end feature {EV_ANY, EV_ANY_I}-- Implementation implementation: EV_TREE_ITEM_I -- Responsible for interaction with native graphics toolkit. feature {NONE} -- Implementation create_implementation -- See `{EV_ANY}.create_implementation'. do create {EV_TREE_ITEM_IMP} implementation.make end note copyright: "Copyright (c) 1984-2006, Eiffel Software and others" license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)" source: "[ Eiffel Software 356 Storke Road, Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end -- class EV_TREE_ITEM