indexing
	description: "Objects that represent the deletion of a constant."
	date: "$Date$"
	revision: "$Revision$"

class
	GB_COMMAND_DELETE_CONSTANT
	
inherit
	
	GB_COMMAND
		export
			{NONE} all
		end
	
	GB_SHARED_HISTORY
		export
			{NONE} all
		end
		
	GB_SHARED_TOOLS
		export
			{NONE} all
		end
	
	GB_SHARED_COMMAND_HANDLER
		export
			{NONE} all
		end
		
	GB_SHARED_CONSTANTS
		export
			{NONE} all
		end
		
	GB_CONSTANTS
		export
			{NONE} all
		end
		
	GB_SHARED_OBJECT_EDITORS
		export
			{NONE} all
		end
	
create
	make
	
feature {NONE} -- Initialization

	--| FIXME, constants are now no longer undoable.
	--| Hence the commented sections in this class.

	make (constant: GB_CONSTANT) is
			-- Create `Current' with `child' to be removed from `parent' at
			-- position `position'.
		require
			constant_not_void: constant /= Void
		do
		--	history.cut_off_at_current_position
			internal_constant := constant
		ensure
			constant_recorded: internal_constant /= Void
		end

feature -- Basic Operation

	execute is
			-- Undo `Current'.
			-- Calling `execute' followed by `undo' must restore
			-- the system to its previous state.
		local
			editors: ARRAYED_LIST [GB_OBJECT_EDITOR]
		do
--			if not history.command_list.has (Current) then
--				history.add_command (Current)
--			end
			editors := all_editors
			from
				editors.start
			until
				editors.off
			loop
				editors.i_th (editors.index).constant_removed (internal_constant)
				editors.forth
			end
			Constants.remove_constant (internal_constant)			
			command_handler.update
		end

	undo is
			-- Execute `Current'.
		local
--			integer_constant: GB_INTEGER_CONSTANT
--			string_constant: GB_STRING_CONSTANT
--			pixmap_constant: GB_PIXMAP_CONSTANT
--			directory_constant: GB_DIRECTORY_CONSTANT
--			editors: ARRAYED_LIST [GB_OBJECT_EDITOR]
		do
--			if internal_constant.type.is_equal (Integer_constant_type) then
--				integer_constant ?= internal_constant
--				Constants.add_integer (integer_constant)
--			elseif internal_constant.type.is_equal (String_constant_type) then
--				string_constant ?= internal_constant
--				Constants.add_string (string_constant)
--			elseif internal_constant.type.is_equal (Pixmap_constant_type) then
--				pixmap_constant ?= internal_constant
--				Constants.add_pixmap (pixmap_constant)
--			elseif internal_constant.type.is_equal (Directory_constant_type) then
--				directory_constant ?= internal_constant
--				Constants.add_directory (directory_constant)
--			end
--			editors := all_editors
--			from
--				editors.start
--			until
--				editors.off
--			loop
--				editors.i_th (editors.index).constant_added (internal_constant)
--				editors.forth
--			end
--			command_handler.update
		end
		
	textual_representation: STRING is
			-- Text representation of command executed.
		do
		--	Result := internal_constant.type + " constant named " + internal_constant.name + " remove from project."
		end

feature {NONE} -- Implementation

	internal_constant: GB_CONSTANT
		-- Constant which is the subject of `Current'.

end -- class GB_COMMAND_DELETE_CONSTANT