import sets, sys

import color, mode, lex, lex_text, method, ispell

class Text(mode.Fundamental):
    def __init__(self, w):
        mode.Fundamental.__init__(self, w)

        self.add_action_and_bindings(LearnWord(), ('C-c l',))
        self.add_action_and_bindings(TextInsertSpace(), ('SPACE',))
        self.add_action_and_bindings(method.WrapParagraph(), ('M-q',))

        self.grammar = lex_text.TextGrammar()
        self.lexer   = lex.Lexer(self.grammar)

        self.default_color = color.build('default', 'default')
        self.colors = {
            'misspelled word':           color.build('red', 'default', 'bold'),
            'misspelled continued word': color.build('red', 'default', 'bold'),
        }

        #self.highlighter.lex_buffer()
        #self.get_regions()

    def name(self):
        return "Text"

class TextInsertSpace(method.Method):
    limit = 80
    #wrapper = method.WrapLine
    wrapper = method.WrapParagraph
    def execute(self, window, **vargs):
        window.insert_string(' ')
        cursor = window.logical_cursor()
        i = cursor.y
        if len(window.buffer.lines[i]) > self.limit:
            self.wrapper().execute(window)

class LearnWord(method.Method):
    def execute(self, window, **vargs):
        if window.mode.highlighter.tokens is None:
            window.mode.highlighter.lex_buffer()
        cursor = window.logical_cursor()
        cursor_offset = window.get_cursor_offset()

        tok = None
        for t in window.mode.highlighter.tokens:
            if t.start <= cursor_offset and cursor_offset < t.end:
                tok = t
                break

        if tok:
            word = tok.string
            if tok.name.startswith('all-caps'):
                s = "%r is all-caps" % (word)
            elif tok.name.startswith('misspelled'):
                ispell.get_speller().learn(word)
                window.mode.highlighter.invalidate_tokens()
                s = "Added %r to personal dictionary" % (word)
            else:
                s = "%r is already in the dictionary" % (word)
        else:
            s = "No word to learn found"
        window.application.set_error(s)