2003-02-20  Michael Natterer  <mitch@gimp.org>

	* app/widgets/Makefile.am
	* app/widgets/widgets-types.h
	* app/widgets/gimpimageeditor.[ch]: new GimpEditor subclass adding
	a GimpImage pointer and a virtual set_image() function.

	* app/widgets/gimpcolormapeditor.[ch]
	* app/widgets/gimpselectioneditor.[ch]
	* app/widgets/gimpundoeditor.[ch]: derive them from GimpImageEditor.
	Removed the public set_image() functions.

	* app/gui/colormap-editor-commands.c
	* app/gui/colormap-editor-menu.c: changed accordingly.

	* app/gui/dialogs-constructors.c: removed lots of code duplication
	and use the uniform GimpImageEditor API. Misc cleanups.