import os, sets, string import color, method from lex3 import Lexer DEBUG = False class ActionError(Exception): pass class Handler: 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 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): for binding in self.bindings.keys(): if self.bindings[binding] == name: del self.bindings[binding] def add_binding(self, name, sequence): 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): for sequence in sequences: self.add_binding(name, sequence) def del_binding(self, sequence): del self.bindings[sequence] def add_action_and_bindings(self, action, sequences): 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.name(), self.grammar) # 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) def region_removed(self, p1, p2): if self.tabber is not None: self.tabber.region_removed(p1, p2)