/usr/share/pyshared/pivy/quarter/eventhandlers/EventManager.py is in python-pivy 0.5.0~v609hg-1.
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# Copyright (c) 2002-2008 Kongsberg SIM
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
class EventManager:
""" The EventManager class is responsible for holding a list of
devices which can translate events such as a MouseHandler and
KeyboardHandler for translation of mouse and keyboard events,
respectively.
Custom device handlers can be registered with this class for more
functionality
"""
def __init__(self, quarterwidget):
assert(quarterwidget)
self.quarterwidget = quarterwidget
self.eventhandlers = []
def handleEvent(self, qevent):
"""Runs trough the list of registered devices to translate events"""
for handler in self.eventhandlers:
if handler.handleEvent(qevent):
return True
return False
def getWidget(self):
"""Returns the QuarterWidget this devicemanager belongs to"""
return self.quarterwidget
def registerEventHandler(self, handler):
"""Register a device for event translation"""
if (not handler in self.eventhandlers):
handler.setManager(self)
self.eventhandlers.append(handler)
def unregisterEventHandler(self, handler):
"""unregister a device"""
if handler in self.eventhandlers:
self.eventhandlers.removeAt(self.eventhandlers.indexOf(handler))
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