# Sketch - A Python-based interactive drawing program
# Copyright (C) 1998, 1999 by Bernhard Herzog
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA

from Sketch.warn import warn_tb, USER
import Sketch

from wrapper import DocumentWrapper


class Context:

    def __init__(self):
        self.application = Sketch.main.application
        self.main_window = self.application.main_window
        self.document = self.main_window.document

class Script:

    def __init__(self, name, title, function, args = (), kwargs = None,
                 sensitive = None):
        self.name = name
        self.title = title
        self.function = function
        self.args = args
        self.kwargs = kwargs
        self.sensitive = sensitive

    def Title(self):
        return self.title

    def execute(self, context, *args, **kw):
        document = context.main_window.document
        apply(document.BeginTransaction, args, kw)
        try:
            try:
                kw = self.kwargs
                if kw is None:
                    kw = {}
                apply(self.function, (context,) + self.args, kw)
            except:
                warn_tb(USER, 'Error in user script "%s"', self.name)
                document.AbortTransaction()
        finally:
            document.EndTransaction()


class SafeScript(Script):

    def Execute(self):
        context = Context()
        context.document = DocumentWrapper(context.document)
        self.execute(context, self.Title())


#class SelectionScript(Script):
#
#    def Execute(self):
#        self.execute(Context(), clear_selection_rect = 0)

class AdvancedScript(Script):

    def Execute(self):
        self.execute(Context(), self.Title())
