JezK
Edit File: IdleHistory.py
from idlelib.configHandler import idleConf class History: def __init__(self, text, output_sep = "\n"): self.text = text self.history = [] self.history_prefix = None self.history_pointer = None self.output_sep = output_sep self.cyclic = idleConf.GetOption("main", "History", "cyclic", 1, "bool") text.bind("<<history-previous>>", self.history_prev) text.bind("<<history-next>>", self.history_next) def history_next(self, event): self.history_do(0) return "break" def history_prev(self, event): self.history_do(1) return "break" def _get_source(self, start, end): # Get source code from start index to end index. Lines in the # text control may be separated by sys.ps2 . lines = self.text.get(start, end).split(self.output_sep) return "\n".join(lines) def _put_source(self, where, source): output = self.output_sep.join(source.split("\n")) self.text.insert(where, output) def history_do(self, reverse): nhist = len(self.history) pointer = self.history_pointer prefix = self.history_prefix if pointer is not None and prefix is not None: if self.text.compare("insert", "!=", "end-1c") or \ self._get_source("iomark", "end-1c") != self.history[pointer]: pointer = prefix = None if pointer is None or prefix is None: prefix = self._get_source("iomark", "end-1c") if reverse: pointer = nhist else: if self.cyclic: pointer = -1 else: self.text.bell() return nprefix = len(prefix) while 1: if reverse: pointer = pointer - 1 else: pointer = pointer + 1 if pointer < 0 or pointer >= nhist: self.text.bell() if not self.cyclic and pointer < 0: return else: if self._get_source("iomark", "end-1c") != prefix: self.text.delete("iomark", "end-1c") self._put_source("iomark", prefix) pointer = prefix = None break item = self.history[pointer] if item[:nprefix] == prefix and len(item) > nprefix: self.text.delete("iomark", "end-1c") self._put_source("iomark", item) break self.text.mark_set("insert", "end-1c") self.text.see("insert") self.text.tag_remove("sel", "1.0", "end") self.history_pointer = pointer self.history_prefix = prefix def history_store(self, source): source = source.strip() if len(source) > 2: # avoid duplicates try: self.history.remove(source) except ValueError: pass self.history.append(source) self.history_pointer = None self.history_prefix = None