Chapter6-3-abridged.py 文件源码

def next_match(self, event=None):
        try:
            current_target, current_target_end = self.match_coordinates[self.current_match]
            self.main_text.tag_remove("sel", current_target, current_target_end)
            self.main_text.tag_add("findmatch", current_target, current_target_end)
        except IndexError:
            pass

        try:
            self.current_match = self.current_match + 1
            next_target, target_end = self.match_coordinates[self.current_match]
        except IndexError:
            if len(self.match_coordinates) == 0:
                msg.showinfo("No Matches", "No Matches Found")
            else:
                if msg.askyesno("Wrap Search?", "Reached end of file. Continue from the top?"):
                    self.current_match = -1
                    self.next_match()
        else:
            self.main_text.mark_set(tk.INSERT, next_target)
            self.main_text.tag_remove("findmatch", next_target, target_end)
            self.main_text.tag_add("sel", next_target, target_end)
            self.main_text.see(next_target)