pmacs3/mode2.py

255 lines
10 KiB
Python

import os, sets, string
import color, method
from lex3 import Lexer
from point2 import Point
DEBUG = False
class ActionError(Exception):
pass
class Handler(object):
def __init__(self):
self.prefixes = sets.Set(["C-x", "C-c", "C-u"])
self.last_sequence = ''
self.curr_tokens = []
self.bindings = {}
# handle adding and removing actions
def add_action(self, action):
if self.window is None:
return
if action.name in self.window.application.methods:
return
if action.name in self.window.application.methods:
raise Exception, "Action %r already found" % action.name
self.window.application.methods[action.name] = action
def del_action(self, name):
if self.window is None:
return
for binding in self.bindings.keys():
if self.bindings[binding] == name:
del self.bindings[binding]
def add_binding(self, name, sequence):
if self.window is None:
return
if name not in self.window.application.methods:
raise Exception, "No action called %r found" % name
self.bindings[sequence] = name
def add_bindings(self, name, sequences):
if self.window is None:
return
for sequence in sequences:
self.add_binding(name, sequence)
def del_binding(self, sequence):
if self.window is None:
return
del self.bindings[sequence]
def add_action_and_bindings(self, action, sequences):
if self.window is None:
return
self.add_action(action)
for sequence in sequences:
self.add_binding(action.name, sequence)
def handle_token(self, t):
'''self.handle_token(token): returns None, or the action to
take. raises an exception on unknown input'''
self.curr_tokens.append(t)
sequence = " ".join(self.curr_tokens)
if sequence in self.bindings:
act = self.window.application.methods[self.bindings[sequence]]
self.last_sequence = sequence
self.curr_tokens = []
return act
elif t in self.prefixes:
for binding in self.bindings:
if binding.startswith(sequence):
return None
self.curr_tokens = []
self.last_sequence = sequence
raise ActionError, "no action defined for %r" % (sequence)
class Fundamental(Handler):
'''This is the default mode'''
tabbercls = None
grammar = None
lexer = None
tabber = None
def __init__(self, w):
self.window = w
# we need to defer this due to curses startup
self.default_color = color.pairs('default', 'default')
self.colors = {}
Handler.__init__(self)
# first let's add all the "default" actions
self.add_bindings('start-of-line', ('C-a', 'HOME',))
self.add_bindings('end-of-line', ('C-e', 'END',))
self.add_bindings('backward', ('C-b', 'L_ARROW',))
self.add_bindings('forward', ('C-f', 'R_ARROW',))
self.add_bindings('center-view', ('C-l',))
self.add_bindings('next-line', ('C-n', 'D_ARROW',))
self.add_bindings('previous-line', ('C-p', 'U_ARROW',))
self.add_bindings('next-section', ('M-n', 'M-D_ARROW',))
self.add_bindings('previous-section', ('M-p', 'M-U_ARROW',))
self.add_bindings('page-down', ('C-v', 'PG_DN',))
self.add_bindings('page-up', ('M-v', 'PG_UP',))
self.add_bindings('goto-beginning', ('M-<',))
self.add_bindings('goto-end', ('M->',))
self.add_bindings('delete-left', ('DELETE', 'BACKSPACE',))
self.add_bindings('delete-left-word', ('M-DELETE', 'M-BACKSPACE',))
self.add_bindings('delete-right', ('C-d',))
self.add_bindings('delete-right-word', ('M-d',))
self.add_bindings('kill-region', ('C-w',))
self.add_bindings('copy-region', ('M-w',))
self.add_bindings('kill', ('C-k',))
self.add_bindings('copy', ('M-k',))
self.add_bindings('yank', ('C-y',))
self.add_bindings('pop-kill', ('M-y',))
self.add_bindings('right-word', ('M-f',))
self.add_bindings('left-word', ('M-b',))
self.add_bindings('set-mark', ('C-@',))
self.add_bindings('switch-buffer', ('C-x b',))
self.add_bindings('switch-mark', ('C-x C-x',))
self.add_bindings('undo', ('C-/', 'C-x u',))
self.add_bindings('redo', ('M-/', 'M-_', 'C-x r',))
self.add_bindings('goto-line', ('M-g',))
self.add_bindings('forward-chars', ('C-x M-c',))
self.add_bindings('forward-lines', ('C-x M-n',))
self.add_bindings('search', ('C-s',))
self.add_bindings('reverse-search', ('C-r',))
self.add_bindings('regex-search', ('M-C-s',))
self.add_bindings('regex-reverse-search', ('M-C-r',))
self.add_bindings('toggle-margins', ('M-m',))
self.add_bindings('replace', ('M-%',))
self.add_bindings('open-file', ('C-x C-f',))
self.add_bindings('kill-buffer', ('C-x k',))
self.add_bindings('force-kill-buffer', ('C-x K',))
self.add_bindings('list-buffers', ('C-x C-b',))
self.add_bindings('meta-x', ('M-x',))
self.add_bindings('wrap-line', ('M-q',))
self.add_bindings('transpose-words', ('M-t',))
self.add_bindings('save-buffer', ('C-x C-s',))
self.add_bindings('save-buffer-as', ('C-x C-w',))
self.add_bindings('relex-buffer', ('M-r',))
self.add_bindings('exit', ('C-x C-c',))
self.add_bindings('exit2', ('C-c C-c',))
self.add_bindings('split-window', ('C-x s',))
self.add_bindings('unsplit-window', ('C-u s',))
self.add_bindings('toggle-window', ('C-x o',))
self.add_bindings('delete-left-whitespace', ('C-c DELETE', 'C-c BACKSPACE',))
self.add_bindings('delete-right-whitespace', ('C-c d',))
self.add_bindings('insert-space', ('SPACE',))
self.add_bindings('insert-tab', ('TAB',))
self.add_bindings('insert-newline', ('RETURN',))
self.add_bindings('comment-region', ('C-c #',))
self.add_bindings('uncomment-region', ('C-u C-c #',))
self.add_bindings('justify-right', ('C-c f',))
self.add_bindings('justify-left', ('C-c b',))
self.add_bindings('indent-block', ('C-c >',))
self.add_bindings('unindent-block', ('C-c <',))
self.add_bindings('code-complete', ('M-c',))
self.add_bindings('shell-cmd', ('C-c !',))
self.add_bindings('open-aes-file', ('C-c a',))
self.add_bindings('open-console', ('M-e',))
self.add_bindings('show-bindings-buffer', ('C-c M-h','C-c M-?',))
self.add_bindings('which-command', ('M-?',))
self.add_bindings('cmd-help-buffer', ('M-h',))
self.add_bindings('set-mode', ('C-x m',))
self.add_bindings('cancel', ('C-]',))
# unbound actions
self.add_action(method.GetToken())
# create all the insert actions for the basic text input
for c in string.letters + string.digits + string.punctuation:
self.add_binding('insert-string-%s' % c, c)
# lexing for highlighting, etc.
if self.grammar:
self.lexer = Lexer(self, self.grammar)
self.gstack = {}
self.ghist = {}
# tab handling
if self.tabbercls:
self.tabber = self.tabbercls(self)
# get mode name
def name(self):
return "Fundamental"
# handle input tokens
def handle_token(self, t):
'''self.handle_token(token): handles input "token"'''
self.window.active_point = None
#self.window.application.clear_error()
self.window.clear_error()
try:
act = Handler.handle_token(self, t)
if act is None:
self.window.set_error(' '.join(self.curr_tokens))
return
else:
act.execute(self.window)
self.window.application.last_action = act.name
except ActionError, e:
if t != 'C-]':
self.window.set_error(str(e))
else:
self.window.set_error('Cancelled')
except Exception, e:
if DEBUG:
raise
else:
err = "%s in mode '%s'" % (e, self.name())
self.window.set_error(err)
def region_added(self, p, newlines):
if self.tabber is not None:
self.tabber.region_added(p, newlines)
if self.lexer:
ydelta = len(newlines) - 1
xdelta = len(newlines[-1])
ghist = {}
for name in self.ghist:
for p2 in self.ghist[name]:
if p2.y > p.y:
newp = Point(p2.x, p2.y + ydelta)
elif ydelta == 0:
newp = Point(p2.x + xdelta, p2.y)
else:
newp = Point(p2.x, p2.y + ydelta)
ghist.setdefault(name, {})
ghist[name][newp] = self.ghist[name][p2]
self.ghist = ghist
def region_removed(self, p1, p2):
if self.tabber is not None:
self.tabber.region_removed(p1, p2)
if self.lexer:
ydelta = p2.y - p1.y
xdelta = p2.x - p1.x
ghist = {}
for name in self.ghist:
for p in self.ghist[name]:
if p < p1:
newp = p
elif p1 <= p and p < p2:
continue
elif ydelta == 0:
if p.y == p2.y:
newp = Point(p.x - xdelta, p.y)
else:
newp = p
else:
if p.y == p2.y:
newp = Point(p.x - xdelta, p.y - ydelta)
else:
newp = Point(p.x, p.y - ydelta)
ghist.setdefault(name, {})
ghist[name][newp] = self.ghist[name][p]
self.ghist = ghist