281 lines
11 KiB
Python
281 lines
11 KiB
Python
import os, sets, string
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import color, method
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from lex import Lexer
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from point import Point
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DEBUG = False
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class ActionError(Exception):
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pass
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class Handler(object):
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def __init__(self):
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self.prefixes = sets.Set(["C-x", "C-c", "C-u"])
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self.last_sequence = ''
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self.curr_tokens = []
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self.bindings = {}
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# handle adding and removing actions
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def add_action(self, action):
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if self.window is None:
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return
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elif action.name in self.window.application.methods:
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return
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else:
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self.window.application.methods[action.name] = action
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def del_action(self, name):
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if self.window is None:
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return
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for binding in self.bindings.keys():
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if self.bindings[binding] == name:
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del self.bindings[binding]
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def add_binding(self, name, sequence):
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if self.window is None:
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return
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elif not hasattr(self.window, 'application'):
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raise Exception, "argh %r %r" % (self, self.window)
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elif name not in self.window.application.methods:
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raise Exception, "No action called %r found" % name
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else:
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self.bindings[sequence] = name
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def add_bindings(self, name, sequences):
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if self.window is None:
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return
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for sequence in sequences:
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self.add_binding(name, sequence)
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def del_binding(self, sequence):
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if self.window is None:
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return
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del self.bindings[sequence]
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def add_action_and_bindings(self, action, sequences):
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if self.window is None:
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return
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self.add_action(action)
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for sequence in sequences:
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self.add_binding(action.name, sequence)
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def handle_token(self, t):
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'''self.handle_token(token): returns None, or the action to
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take. raises an exception on unknown input'''
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self.curr_tokens.append(t)
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sequence = " ".join(self.curr_tokens)
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if sequence in self.bindings:
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act = self.window.application.methods[self.bindings[sequence]]
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self.last_sequence = sequence
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self.curr_tokens = []
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return act
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elif t in self.prefixes:
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for binding in self.bindings:
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if binding.startswith(sequence):
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return None
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self.curr_tokens = []
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self.last_sequence = sequence
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raise ActionError, "no action defined for %r" % (sequence)
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class Fundamental(Handler):
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'''This is the default mode'''
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modename = "Fundamental"
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paths = []
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basenames = []
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extensions = []
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detection = []
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savetabs = False
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tabwidth = 4
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tabbercls = None
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grammar = None
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lexer = None
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tabber = None
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default_color = ('default', 'default',)
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colors = {}
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def install(cls, app):
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app.setmode(cls.modename.lower(), cls, paths=cls.paths,
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basenames=cls.basenames, extensions=cls.extensions,
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detection=cls.detection)
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install = classmethod(install)
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def __init__(self, w):
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self.window = w
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# we need to defer this due to curses startup
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#self.default_color = color.pairs('default', 'default')
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Handler.__init__(self)
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# first let's add all the "default" actions
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self.add_bindings('start-of-line', ('C-a', 'HOME',))
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self.add_bindings('end-of-line', ('C-e', 'END',))
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self.add_bindings('backward', ('C-b', 'L_ARROW',))
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self.add_bindings('forward', ('C-f', 'R_ARROW',))
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self.add_bindings('center-view', ('C-l',))
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self.add_bindings('next-line', ('C-n', 'D_ARROW',))
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self.add_bindings('previous-line', ('C-p', 'U_ARROW',))
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self.add_bindings('next-section', ('M-n', 'M-D_ARROW',))
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self.add_bindings('previous-section', ('M-p', 'M-U_ARROW',))
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self.add_bindings('page-down', ('C-v', 'PG_DN',))
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self.add_bindings('page-up', ('M-v', 'PG_UP',))
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self.add_bindings('goto-beginning', ('M-<',))
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self.add_bindings('goto-end', ('M->',))
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self.add_bindings('delete-left', ('DELETE', 'BACKSPACE',))
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self.add_bindings('delete-left-word', ('M-DELETE', 'M-BACKSPACE',))
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self.add_bindings('delete-right', ('C-d',))
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self.add_bindings('delete-right-word', ('M-d',))
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self.add_bindings('kill-region', ('C-w',))
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self.add_bindings('copy-region', ('M-w',))
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self.add_bindings('kill', ('C-k',))
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self.add_bindings('copy', ('M-k',))
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self.add_bindings('yank', ('C-y',))
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self.add_bindings('pop-kill', ('M-y',))
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self.add_bindings('right-word', ('M-f',))
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self.add_bindings('left-word', ('M-b',))
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self.add_bindings('set-mark', ('C-@',))
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self.add_bindings('switch-buffer', ('C-x b',))
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self.add_bindings('switch-mark', ('C-x C-x',))
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self.add_bindings('undo', ('C-/', 'C-x u',))
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self.add_bindings('redo', ('M-/', 'M-_', 'C-x r',))
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self.add_bindings('goto-line', ('M-g',))
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self.add_bindings('forward-chars', ('C-x M-c',))
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self.add_bindings('forward-lines', ('C-x M-n',))
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self.add_bindings('search', ('C-s',))
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self.add_bindings('reverse-search', ('C-r',))
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self.add_bindings('regex-search', ('M-C-s',))
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self.add_bindings('regex-reverse-search', ('M-C-r',))
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self.add_bindings('toggle-margins', ('M-m',))
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self.add_bindings('replace', ('M-%',))
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self.add_bindings('regex-replace', ('M-$',))
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self.add_bindings('open-file', ('C-x C-f',))
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self.add_bindings('kill-buffer', ('C-x k',))
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self.add_bindings('list-buffers', ('C-x C-b',))
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self.add_bindings('meta-x', ('M-x',))
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self.add_bindings('wrap-line', ('M-q',))
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self.add_bindings('transpose-words', ('M-t',))
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self.add_bindings('save-buffer', ('C-x C-s',))
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self.add_bindings('save-buffer-as', ('C-x C-w',))
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self.add_bindings('relex-buffer', ('M-r',))
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self.add_bindings('exit', ('C-x C-c',))
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self.add_bindings('split-window', ('C-x s', 'C-x 2',))
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self.add_bindings('unsplit-window', ('C-u s', 'C-x 1',))
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self.add_bindings('toggle-window', ('C-x o',))
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self.add_bindings('delete-left-whitespace', ('C-c DELETE', 'C-c BACKSPACE',))
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self.add_bindings('delete-right-whitespace', ('C-c d',))
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self.add_bindings('insert-space', ('SPACE',))
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self.add_bindings('insert-tab', ('TAB',))
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self.add_bindings('insert-newline', ('RETURN',))
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self.add_bindings('comment-region', ('C-c #',))
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self.add_bindings('uncomment-region', ('C-u C-c #',))
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self.add_bindings('justify-right', ('C-c f',))
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self.add_bindings('justify-left', ('C-c b',))
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self.add_bindings('indent-block', ('C-c >',))
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self.add_bindings('unindent-block', ('C-c <',))
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self.add_bindings('token-complete', ('M-c', 'C-c c'))
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self.add_bindings('shell-cmd', ('C-c !',))
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self.add_bindings('open-aes-file', ('C-c a',))
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self.add_bindings('open-console', ('M-e',))
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self.add_bindings('show-bindings-buffer', ('C-c M-h','C-c M-?',))
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self.add_bindings('which-command', ('M-?',))
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self.add_bindings('cmd-help-buffer', ('M-h',))
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self.add_bindings('set-mode', ('C-x m',))
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self.add_bindings('cancel', ('C-]',))
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self.add_bindings('exec', ('C-c e',))
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self.add_bindings('grep', ('C-c g',))
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self.add_bindings('pipe', ('C-c p',))
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self.add_bindings('view-buffer-parent', ('C-c .',))
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# unbound actions
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self.add_action(method.GetToken())
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# create all the insert actions for the basic text input
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for c in string.letters + string.digits + string.punctuation:
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self.add_binding('insert-string-%s' % c, c)
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# lexing for highlighting, etc.
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if self.grammar:
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self.lexer = Lexer(self, self.grammar)
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self.gstack = {}
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self.ghist = {}
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# tab handling
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if self.tabbercls:
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self.tabber = self.tabbercls(self)
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# get mode name
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def name(self):
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return self.modename
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# handle input tokens
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def handle_token(self, t):
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'''self.handle_token(token): handles input "token"'''
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self.window.active_point = None
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#self.window.application.clear_error()
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self.window.clear_error()
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try:
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act = Handler.handle_token(self, t)
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if act is None:
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self.window.set_error(' '.join(self.curr_tokens))
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return
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else:
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act.execute(self.window)
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self.window.application.last_action = act.name
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except ActionError, e:
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if t != 'C-]':
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self.window.set_error(str(e))
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else:
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self.window.set_error('Cancelled')
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except Exception, e:
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if DEBUG:
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raise
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else:
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err = "%s in mode '%s'" % (e, self.name())
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self.window.set_error(err)
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def region_added(self, p, newlines):
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if self.tabber is not None:
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self.tabber.region_added(p, newlines)
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if self.lexer:
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ydelta = len(newlines) - 1
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xdelta = len(newlines[-1])
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ghist = {}
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for name in self.ghist:
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for gp in self.ghist[name]:
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if gp < p:
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newp = gp
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elif ydelta == 0:
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if p.y == gp.y:
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newp = Point(gp.x + xdelta, gp.y)
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else:
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newp = gp
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else:
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if gp.y == p.y:
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newp = Point(gp.x + xdelta, gp.y + ydelta)
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else:
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newp = Point(gp.x, gp.y + ydelta)
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ghist.setdefault(name, {})
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ghist[name][newp] = self.ghist[name][gp]
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self.ghist = ghist
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def region_removed(self, p1, p2):
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if self.tabber is not None:
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self.tabber.region_removed(p1, p2)
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if self.lexer:
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ydelta = p2.y - p1.y
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xdelta = p2.x - p1.x
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ghist = {}
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for name in self.ghist:
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for gp in self.ghist[name]:
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if gp < p1:
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newp = gp
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elif p1 <= gp and gp < p2:
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continue
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elif ydelta == 0:
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if gp.y == p2.y:
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newp = Point(gp.x - xdelta, gp.y)
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else:
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newp = gp
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else:
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if gp.y == p2.y:
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newp = Point(gp.x - xdelta, gp.y - ydelta)
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else:
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newp = Point(gp.x, gp.y - ydelta)
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ghist.setdefault(name, {})
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ghist[name][newp] = self.ghist[name][gp]
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self.ghist = ghist
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install = Fundamental.install
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