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# Copyright 2007-2008 Nanorex, Inc. See LICENSE file for details.
"""
@author: Ninad
@version: $Id$
@copyright: 2007-2008 Nanorex, Inc. See LICENSE file for details.
@license: GPL
TODOs: [ as of 2008-01-04]
- To be revised heavily . Still a stub, needs documentation.
"""
from dna.command_support.BreakOrJoinStrands_Command import BreakOrJoinStrands_Command
from dna.commands.BreakStrands.BreakStrands_PropertyManager import BreakStrands_PropertyManager
from dna.commands.BreakStrands.BreakStrands_GraphicsMode import BreakStrands_GraphicsMode
from utilities.prefs_constants import cpkScaleFactor_prefs_key
import foundation.env as env
#debug flag for experimental code Ninad is
#working on (various break strands options)
from utilities.GlobalPreferences import DEBUG_BREAK_OPTIONS_FEATURE
_superclass = BreakOrJoinStrands_Command
class BreakStrands_Command(BreakOrJoinStrands_Command):
"""
"""
# class constants
commandName = 'BREAK_STRANDS'
featurename = "Break Strands"
GraphicsMode_class = BreakStrands_GraphicsMode
PM_class = BreakStrands_PropertyManager
def _get_init_gui_flyout_action_string(self):
return 'breakStrandAction'
def command_entered(self):
"""
Extends superclass method.
"""
_superclass.command_entered(self)
self._modifyCPKScaleFactor()
def command_will_exit(self):
"""
Extends superclass method.
"""
self._restoreCPKScaleFactor()
_superclass.command_will_exit(self)
def _modifyCPKScaleFactor(self):
"""
Modify the global CPK scale factor prefs_key temporarily , while in
BreakStrands command. This prefs_key will be restored while exiting this
command
@see: self._restoreCPKScaleFactor()
@see: self.command_entered()
"""
#Note 2008-11-14: This is implemented based on Mark's NFR.
self._original_cpkScaleFactor_prefs_key = env.prefs[cpkScaleFactor_prefs_key]
env.prefs[cpkScaleFactor_prefs_key] = 0.5
def _restoreCPKScaleFactor(self):
"""
@see: self._modifyCPKScaleFactor()
@see: self.command_entered()
@see: self.command_will_exit()
"""
env.prefs[cpkScaleFactor_prefs_key] = self._original_cpkScaleFactor_prefs_key
#===========================================================================
#Methods used in experimental feature that provide various break options
#these are not called but thhe methods do have a safety check to
#see id DEBUG_BREAK_OPTIONS_FEATURE is set to True. -- ninad 2008-08-06
def getStrandList(self):
part = self.win.assy.part
return part.get_topmost_subnodes_of_class(self.win.assy.DnaStrand)
def isSpecifyEndAtomsToolActive(self):
return False
def isSpecifyStartAtomsToolActive(self):
if not DEBUG_BREAK_OPTIONS_FEATURE:
return False
return True
def getNumberOfBasesBeforeNextBreak(self):
if not DEBUG_BREAK_OPTIONS_FEATURE:
return 2
if self.propMgr:
return self.propMgr.getNumberOfBasesBeforeNextBreak()
return 2
def breakStrandBonds(self):
if not DEBUG_BREAK_OPTIONS_FEATURE:
return
self.graphicsMode.breakStrandBonds()
def updateBreakSites(self):
if not DEBUG_BREAK_OPTIONS_FEATURE:
return
self.graphicsMode.updateBreakSites()
#===========================================================================
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