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author | mike <michael.jmontcalm@gmail.com> | 2009-10-19 04:38:32 (GMT) |
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committer | mike <michael.jmontcalm@gmail.com> | 2009-10-19 04:38:32 (GMT) |
commit | 6584510d390a37153c20974da6704a907058fea0 (patch) | |
tree | a0649a77b36b63885774e0af25ec752192a5c404 /addons/chainaction.py | |
parent | 2aef185e57f6c6c38670a5eea74f7889b3d56944 (diff) | |
parent | 3b9bff2ef1826987d95815ff03c235052cea9aae (diff) |
Merge gitorious@git.sugarlabs.org:tutorius/michaeljm-dev into merge_michaeljm-dev
Diffstat (limited to 'addons/chainaction.py')
-rw-r--r-- | addons/chainaction.py | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/addons/chainaction.py b/addons/chainaction.py new file mode 100644 index 0000000..43c4fa4 --- /dev/null +++ b/addons/chainaction.py @@ -0,0 +1,44 @@ +# Copyright (C) 2009, Tutorius.org +# +# This program 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; either version 2 of the License, or +# (at your option) any later version. +# +# This program 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 this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +from sugar.tutorius.actions import * + +class ChainAction(Action): + actions = TAddonListProperty() + + """Utility class to allow executing actions in a specific order""" + def __init__(self, actions=[]): + """ChainAction(action1, ... ) builds a chain of actions""" + Action.__init__(self) + self.actions = actions + + def do(self,**kwargs): + """do() each action in the chain""" + for act in self.actions: + act.do(**kwargs) + + def undo(self): + """undo() each action in the chain, starting with the last""" + for act in reversed(self.actions): + act.undo() + +__action__ = { + 'name': 'ChainAction', + 'display_name' : 'Chain of actions', + 'icon' : 'chain', + 'class' : ChainAction, + 'mandatory_props' : ['actions'] +} |