58 lines
2.0 KiB
Python
Executable File
58 lines
2.0 KiB
Python
Executable File
#!/usr/bin/python
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# Terminator by Chris Jones <cmsj@tenshu.net>
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# GPL v2 only
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"""Simple management of Gtk Widget signal handlers"""
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from util import dbg, err
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class Signalman(object):
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"""Class providing glib signal tracking and management"""
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cnxids = None
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def __init__(self):
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"""Class initialiser"""
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self.cnxids = {}
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def __del__(self):
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"""Class destructor. This is only used to check for stray signals"""
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if len(self.cnxids.keys()) > 0:
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err('Signals remain. This is likely a bug: %s' % self.cnxids)
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def new(self, widget, signal, handler, *args):
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"""Register a new signal on a widget"""
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if not self.cnxids.has_key(widget):
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dbg('creating new bucket for %s' % type(widget))
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self.cnxids[widget] = {}
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if self.cnxids[widget].has_key(signal):
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err('%s already has a handler for %s' % (id(widget), signal))
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self.cnxids[widget][signal] = widget.connect(signal, handler, *args)
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dbg('connected %s::%s to %s' % (type(widget), signal, handler))
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def remove_signal(self, widget, signal):
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"""Remove a signal handler"""
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if not self.cnxids.has_key(widget):
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dbg('%s is not registered' % widget)
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return
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if not self.cnxids[widget].has_key(signal):
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dbg('%s not registered for %s' % (signal, type(widget)))
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return
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dbg('removing %s::%s' % (type(widget), signal))
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widget.disconnect(self.cnxids[widget][signal])
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del(self.cnxids[widget][signal])
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if len(self.cnxids[widget].keys()) == 0:
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dbg('no more signals for widget')
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del(self.cnxids[widget])
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def remove_widget(self, widget):
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"""Remove all signal handlers for a widget"""
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if not self.cnxids.has_key(widget):
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dbg('%s not registered' % widget)
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return
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signals = self.cnxids[widget].keys()
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for signal in signals:
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self.remove_signal(widget, signal)
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