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'''Plugin provides arbitrary binding of uzbl events to uzbl commands.
Formatting options:
%s = space separated string of the arguments
%r = escaped and quoted version of %s
%1 = argument 1
%2 = argument 2
%n = argument n
Usage:
request ON_EVENT LINK_HOVER set selected_uri = $1
--> LINK_HOVER http://uzbl.org/
<-- set selected_uri = http://uzbl.org/
request ON_EVENT CONFIG_CHANGED print Config changed: %1 = %2
--> CONFIG_CHANGED selected_uri http://uzbl.org/
<-- print Config changed: selected_uri = http://uzbl.org/
'''
import sys
import re
def event_handler(uzbl, *args, **kargs):
'''This function handles all the events being watched by various
on_event definitions and responds accordingly.'''
# Could be connected to a EM internal event that can use anything as args
if len(args) == 1 and isinstance(args[0], basestring):
args = splitquoted(args[0])
events = uzbl.on_events
event = kargs['on_event']
if event not in events:
return
commands = events[event]
cmd_expand = uzbl.cmd_expand
for cmd in commands:
cmd = cmd_expand(cmd, args)
uzbl.send(cmd)
def on_event(uzbl, event, cmd):
'''Add a new event to watch and respond to.'''
event = event.upper()
events = uzbl.on_events
if event not in events:
connect(uzbl, event, event_handler, on_event=event)
events[event] = []
cmds = events[event]
if cmd not in cmds:
cmds.append(cmd)
def parse_on_event(uzbl, args):
'''Parse ON_EVENT events and pass them to the on_event function.
Syntax: "event ON_EVENT <EVENT_NAME> commands".'''
args = args.strip()
assert args, 'missing on event arguments'
(event, command) = (args.split(' ', 1) + ['',])[:2]
assert event and command, 'missing on event command'
on_event(uzbl, event, command)
# plugin init hook
def init(uzbl):
'''Export functions and connect handlers to events.'''
connect(uzbl, 'ON_EVENT', parse_on_event)
export_dict(uzbl, {
'on_event': on_event,
'on_events': {},
})
# plugin cleanup hook
def cleanup(uzbl):
for handlers in uzbl.on_events.values():
del handlers[:]
uzbl.on_events.clear()
# vi: set et ts=4:
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