import string import re ###$ event <> ###$ win ###$ unix class AutoExpand: menudefs = [ ('edit', [ ('E_xpand Word', '<>'), ]), ] wordchars = string.ascii_letters + string.digits + "_" def __init__(self, editwin): self.text = editwin.text self.state = None def expand_word_event(self, event): curinsert = self.text.index("insert") curline = self.text.get("insert linestart", "insert lineend") if not self.state: words = self.getwords() index = 0 else: words, index, insert, line = self.state if insert != curinsert or line != curline: words = self.getwords() index = 0 if not words: self.text.bell() return "break" word = self.getprevword() self.text.delete("insert - %d chars" % len(word), "insert") newword = words[index] index = (index + 1) % len(words) if index == 0: self.text.bell() # Warn we cycled around self.text.insert("insert", newword) curinsert = self.text.index("insert") curline = self.text.get("insert linestart", "insert lineend") self.state = words, index, curinsert, curline return "break" def getwords(self): word = self.getprevword() if not word: return [] before = self.text.get("1.0", "insert wordstart") wbefore = re.findall(r"\b" + word + r"\w+\b", before) del before after = self.text.get("insert wordend", "end") wafter = re.findall(r"\b" + word + r"\w+\b", after) del after if not wbefore and not wafter: return [] words = [] dict = {} # search backwards through words before wbefore.reverse() for w in wbefore: if dict.get(w): continue words.append(w) dict[w] = w # search onwards through words after for w in wafter: if dict.get(w): continue words.append(w) dict[w] = w words.append(word) return words def getprevword(self): line = self.text.get("insert linestart", "insert") i = len(line) while i > 0 and line[i-1] in self.wordchars: i = i-1 return line[i:]