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import os
import code
import logging
import threading
import subprocess
import buffer
import hooks
import settings
class Command:
"""base class for commands"""
def __init__(self, prehook=None, posthook=None, **ignored):
self.prehook = prehook
self.posthook = posthook
self.undoable = False
self.help = self.__doc__
def apply(self, caller):
pass
class ShutdownCommand(Command):
"""shuts the MUA down cleanly"""
def apply(self, ui):
ui.shutdown()
class OpenThreadCommand(Command):
"""open a new thread-view buffer"""
def __init__(self, thread, **kwargs):
self.thread = thread
Command.__init__(self, **kwargs)
def apply(self, ui):
ui.logger.info('open thread view for %s' % self.thread)
sb = buffer.SingleThreadBuffer(ui, self.thread)
ui.buffer_open(sb)
class SearchCommand(Command):
"""open a new search buffer"""
def __init__(self, query, force_new=False, **kwargs):
"""
@param query initial querystring
@param force_new True forces a new buffer
"""
self.query = query
self.force_new = force_new
Command.__init__(self, **kwargs)
def apply(self, ui):
if not self.force_new:
open_searches = ui.get_buffers_of_type(buffer.SearchBuffer)
to_be_focused = None
for sb in open_searches:
if sb.querystring == self.query:
to_be_focused = sb
if to_be_focused:
ui.buffer_focus(to_be_focused)
else:
ui.buffer_open(buffer.SearchBuffer(ui, self.query))
else:
ui.buffer_open(buffer.SearchBuffer(ui, self.query))
class SearchPromptCommand(Command):
"""prompt the user for a querystring, then start a search"""
def apply(self, ui):
querystring = ui.prompt('search threads:')
ui.logger.info("got %s" % querystring)
if querystring:
cmd = factory('search', query=querystring)
ui.apply_command(cmd)
class RefreshCommand(Command):
"""refreshes the current buffer"""
def apply(self, ui):
ui.current_buffer.rebuild()
ui.update()
class EditCommand(Command):
"""
opens editor
TODO tempfile handling etc
"""
def __init__(self, path, spawn=False, **kwargs):
self.path = path
self.spawn = settings.spawn_editor or spawn
Command.__init__(self, **kwargs)
def apply(self, ui):
def afterwards():
ui.logger.info('Editor was closed')
cmd = ExternalCommand(settings.editor_cmd % self.path,
spawn=self.spawn,
onExit=afterwards)
ui.apply_command(cmd)
class PagerCommand(Command):
"""opens pager"""
def __init__(self, path, spawn=False, **kwargs):
self.path = path
self.spawn = settings.spawn_pager or spawn
Command.__init__(self, **kwargs)
def apply(self, ui):
def afterwards():
ui.logger.info('pager was closed')
cmd = ExternalCommand(settings.pager_cmd % self.path,
spawn=self.spawn,
onExit=afterwards)
ui.apply_command(cmd)
class ExternalCommand(Command):
"""calls external command"""
def __init__(self, commandstring, spawn=False, refocus=True,
onExit=None, **kwargs):
self.commandstring = commandstring
self.spawn = spawn
self.refocus = refocus
self.onExit = onExit
Command.__init__(self, **kwargs)
def apply(self, ui):
def call(onExit, popenArgs):
callerbuffer = ui.current_buffer
ui.logger.info('CALLERBUFFER: %s' % callerbuffer)
proc = subprocess.Popen(*popenArgs, shell=True)
proc.wait()
if callable(onExit):
onExit()
if self.refocus and callerbuffer in ui.buffers:
ui.logger.info('TRY TO REFOCUS: %s' % callerbuffer)
ui.buffer_focus(callerbuffer)
return
if self.spawn:
cmd = settings.terminal_cmd % self.commandstring
thread = threading.Thread(target=call, args=(self.onExit, (cmd,)))
thread.start()
else:
ui.mainloop.screen.stop()
cmd = self.commandstring
logging.debug(cmd)
call(self.onExit, (cmd,))
ui.mainloop.screen.start()
class OpenPythonShellCommand(Command):
"""
opens an interactive shell for introspection
"""
def apply(self, ui):
ui.mainloop.screen.stop()
code.interact(local=locals())
ui.mainloop.screen.start()
class BufferCloseCommand(Command):
"""
close a buffer
@param buffer the selected buffer
"""
def __init__(self, buffer=None, **kwargs):
self.buffer = buffer
Command.__init__(self, **kwargs)
def apply(self, ui):
if not self.buffer:
self.buffer = ui.current_buffer
ui.buffer_close(self.buffer)
ui.buffer_focus(ui.current_buffer)
class BufferFocusCommand(Command):
"""
focus a buffer
@param buffer the selected buffer
"""
def __init__(self, buffer=None, offset=0, **kwargs):
self.buffer = buffer
self.offset = offset
Command.__init__(self, **kwargs)
def apply(self, ui):
if not self.buffer:
self.buffer = ui.current_buffer
idx = ui.buffers.index(self.buffer)
num = len(ui.buffers)
to_be_focused = ui.buffers[(idx + self.offset) % num]
#only select bufferlist if its the last one
if isinstance(to_be_focused, buffer.BufferListBuffer):
to_be_focused = ui.buffers[(idx + self.offset + 1) % num]
ui.buffer_focus(to_be_focused)
class OpenBufferListCommand(Command):
"""
open a bufferlist
"""
def __init__(self, filtfun=None, **kwargs):
self.filtfun = filtfun
Command.__init__(self, **kwargs)
def apply(self, ui):
blists = ui.get_buffers_of_type(buffer.BufferListBuffer)
if blists:
ui.buffer_focus(blists[0])
else:
ui.buffer_open(buffer.BufferListBuffer(ui, self.filtfun))
class OpenTagListCommand(Command):
"""
open a taglist
"""
def __init__(self, filtfun=None, **kwargs):
self.filtfun = filtfun
Command.__init__(self, **kwargs)
def apply(self, ui):
tags = ui.dbman.get_all_tags()
buf = buffer.TagListBuffer(ui, tags, self.filtfun)
ui.buffers.append(buf)
buf.rebuild()
ui.buffer_focus(buf)
class ToggleThreadTagCommand(Command):
"""
"""
def __init__(self, thread, tag, **kwargs):
assert thread
self.thread = thread
self.tag = tag
Command.__init__(self, **kwargs)
def apply(self, ui):
if self.tag in self.thread.get_tags():
self.thread.remove_tags([self.tag])
else:
self.thread.add_tags([self.tag])
# refresh selected threadline
sbuffer = ui.current_buffer
threadwidget = sbuffer.get_selected_threadline()
threadwidget.rebuild() # rebuild and redraw the line
#remove line from searchlist if thread doesn't match the query
qs = "(%s) AND thread:%s" % (sbuffer.querystring,
self.thread.get_thread_id())
msg_count = ui.dbman.count_messages(qs)
if ui.dbman.count_messages(qs) == 0:
ui.logger.debug('remove: %s' % self.thread)
sbuffer.threadlist.remove(threadwidget)
sbuffer.result_count -= self.thread.get_total_messages()
ui.update_footer()
class ThreadTagPromptCommand(Command):
"""prompt the user for labels, then tag thread"""
def __init__(self, thread, **kwargs):
assert thread
self.thread = thread
Command.__init__(self, **kwargs)
def apply(self, ui):
initial_tagstring = ','.join(self.thread.get_tags())
tagsstring = ui.prompt('label thread:', text=initial_tagstring)
if tagsstring != None: # esc -> None, enter could return ''
tags = filter(lambda x: x, tagsstring.split(','))
ui.logger.info("got %s:%s" % (tagsstring, tags))
self.thread.set_tags(tags)
# refresh selected threadline
sbuffer = ui.current_buffer
threadwidget = sbuffer.get_selected_threadline()
threadwidget.rebuild() # rebuild and redraw the line
class RefineSearchPromptCommand(Command):
"""refine the current search"""
def apply(self, ui):
sbuffer = ui.current_buffer
oldquery = sbuffer.querystring
querystring = ui.prompt('refine search:', text=oldquery)
if querystring not in [None, oldquery]:
sbuffer.querystring = querystring
sbuffer = ui.current_buffer
sbuffer.rebuild()
ui.update_footer()
commands = {
'buffer_close': (BufferCloseCommand, {}),
'buffer_focus': (BufferFocusCommand, {}),
'buffer_list': (OpenBufferListCommand, {}),
'buffer_next': (BufferFocusCommand, {'offset': 1}),
'buffer_prev': (BufferFocusCommand, {'offset': -1}),
'call_editor': (EditCommand, {}),
'call_pager': (PagerCommand, {}),
'open_taglist': (OpenTagListCommand, {}),
'open_thread': (OpenThreadCommand, {}),
'search': (SearchCommand, {}),
'search_prompt': (SearchPromptCommand, {}),
'refine_search_prompt': (RefineSearchPromptCommand, {}),
'shell': (OpenPythonShellCommand, {}),
'shutdown': (ShutdownCommand, {}),
'thread_tag_prompt': (ThreadTagPromptCommand, {}),
'toggle_thread_tag': (ToggleThreadTagCommand, {'tag': 'inbox'}),
'view_log': (PagerCommand, {'path': 'debug.log'}),
'refresh_buffer': (RefreshCommand, {}),
}
def factory(cmdname, **kwargs):
if cmdname in commands:
(cmdclass, parms) = commands[cmdname]
parms = parms.copy()
parms.update(kwargs)
for (key, value) in kwargs.items():
if callable(value):
parms[key] = value()
else:
parms[key] = value
prehook = hooks.get_hook('pre-' + cmdname)
if prehook:
parms['prehook'] = prehook
posthook = hooks.get_hook('post-' + cmdname)
if posthook:
parms['posthook'] = hooks.get_hook('post-' + cmdname)
logging.debug('cmd parms %s' % parms)
return cmdclass(**parms)
else:
logging.error('there is no command %s' % cmdname)
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