note
	description	: "Command to perform a clipboard operation (cut, copy or paste)"
	legal: "See notice at end of class."
	status: "See notice at end of class."
	date		: "$Date$"
	revision	: "$Revision $"

deferred class
	EB_CLIPBOARD_COMMAND

inherit
	EB_TOOLBARABLE_AND_MENUABLE_COMMAND

	EB_CLIPBOARD_OBSERVER
		redefine
			on_changed
		end

feature {NONE} -- Implementation

	on_changed
			-- The undo/redo stack has changed.
		local
			sensitive: BOOLEAN
			operation_possible: BOOLEAN
		do
			sensitive := is_sensitive
			operation_possible := executable

			if sensitive and not operation_possible then
				disable_sensitive
			elseif not sensitive and operation_possible then
				enable_sensitive
			end
		end

note
	copyright:	"Copyright (c) 1984-2014, Eiffel Software"
	license:	"GPL version 2 (see http://www.eiffel.com/licensing/gpl.txt)"
	licensing_options:	"http://www.eiffel.com/licensing"
	copying: "[
			This file is part of Eiffel Software's Eiffel Development Environment.
			
			Eiffel Software's Eiffel Development Environment is free
			software; you can redistribute it and/or modify it under
			the terms of the GNU General Public License as published
			by the Free Software Foundation, version 2 of the License
			(available at the URL listed under "license" above).
			
			Eiffel Software's Eiffel Development Environment is
			distributed in the hope that it will be useful, but
			WITHOUT ANY WARRANTY; without even the implied warranty
			of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
			See the GNU General Public License for more details.
			
			You should have received a copy of the GNU General Public
			License along with Eiffel Software's Eiffel Development
			Environment; if not, write to the Free Software Foundation,
			Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
		]"
	source: "[
			Eiffel Software
			5949 Hollister Ave., 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 EB_CLIPBOARD_COMMAND