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import gtk
RESPONSE_BREAK = 0
RESPONSE_CANCEL = gtk.RESPONSE_CANCEL
READ = "read"
WRITE = "write"
def acquire(branch, lock_type):
if branch.get_physical_lock_status():
dialog = LockDialog(branch)
response = dialog.run()
dialog.destroy()
if response == RESPONSE_BREAK:
branch.break_lock()
else:
return False
if lock_type == READ:
branch.lock_read()
elif lock_type == WRITE:
branch.lock_write()
return True
def release(branch):
if branch.get_physical_lock_status():
dialog = LockDialog(branch)
response = dialog.run()
dialog.destroy()
if response == RESPONSE_BREAK:
branch.break_lock()
elif response == RESPONSE_CANCEL:
return False
branch.unlock()
return True
class LockDialog(gtk.Dialog):
def __init__(self, branch):
gtk.Dialog.__init__(self)
self.branch = branch
self.set_title('Lock Not Held')
self.vbox.add(gtk.Label('This operation cannot be completed as ' \
'another application has locked the branch.'))
self.add_button('Break Lock', RESPONSE_BREAK)
self.add_button(gtk.STOCK_CANCEL, RESPONSE_CANCEL)
self.vbox.show_all()
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