symbian-qemu-0.9.1-12/python-2.6.1/Lib/idlelib/IdleHistory.py
author johnathan.white@2718R8BGH51.accenture.com
Mon, 08 Mar 2010 18:45:03 +0000
changeset 46 b6935a90ca64
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority

from 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