| 1 | from configHandler import idleConf
|
|---|
| 2 |
|
|---|
| 3 | class History:
|
|---|
| 4 |
|
|---|
| 5 | def __init__(self, text, output_sep = "\n"):
|
|---|
| 6 | self.text = text
|
|---|
| 7 | self.history = []
|
|---|
| 8 | self.history_prefix = None
|
|---|
| 9 | self.history_pointer = None
|
|---|
| 10 | self.output_sep = output_sep
|
|---|
| 11 | self.cyclic = idleConf.GetOption("main", "History", "cyclic", 1, "bool")
|
|---|
| 12 | text.bind("<<history-previous>>", self.history_prev)
|
|---|
| 13 | text.bind("<<history-next>>", self.history_next)
|
|---|
| 14 |
|
|---|
| 15 | def history_next(self, event):
|
|---|
| 16 | self.history_do(0)
|
|---|
| 17 | return "break"
|
|---|
| 18 |
|
|---|
| 19 | def history_prev(self, event):
|
|---|
| 20 | self.history_do(1)
|
|---|
| 21 | return "break"
|
|---|
| 22 |
|
|---|
| 23 | def _get_source(self, start, end):
|
|---|
| 24 | # Get source code from start index to end index. Lines in the
|
|---|
| 25 | # text control may be separated by sys.ps2 .
|
|---|
| 26 | lines = self.text.get(start, end).split(self.output_sep)
|
|---|
| 27 | return "\n".join(lines)
|
|---|
| 28 |
|
|---|
| 29 | def _put_source(self, where, source):
|
|---|
| 30 | output = self.output_sep.join(source.split("\n"))
|
|---|
| 31 | self.text.insert(where, output)
|
|---|
| 32 |
|
|---|
| 33 | def history_do(self, reverse):
|
|---|
| 34 | nhist = len(self.history)
|
|---|
| 35 | pointer = self.history_pointer
|
|---|
| 36 | prefix = self.history_prefix
|
|---|
| 37 | if pointer is not None and prefix is not None:
|
|---|
| 38 | if self.text.compare("insert", "!=", "end-1c") or \
|
|---|
| 39 | self._get_source("iomark", "end-1c") != self.history[pointer]:
|
|---|
| 40 | pointer = prefix = None
|
|---|
| 41 | if pointer is None or prefix is None:
|
|---|
| 42 | prefix = self._get_source("iomark", "end-1c")
|
|---|
| 43 | if reverse:
|
|---|
| 44 | pointer = nhist
|
|---|
| 45 | else:
|
|---|
| 46 | if self.cyclic:
|
|---|
| 47 | pointer = -1
|
|---|
| 48 | else:
|
|---|
| 49 | self.text.bell()
|
|---|
| 50 | return
|
|---|
| 51 | nprefix = len(prefix)
|
|---|
| 52 | while 1:
|
|---|
| 53 | if reverse:
|
|---|
| 54 | pointer = pointer - 1
|
|---|
| 55 | else:
|
|---|
| 56 | pointer = pointer + 1
|
|---|
| 57 | if pointer < 0 or pointer >= nhist:
|
|---|
| 58 | self.text.bell()
|
|---|
| 59 | if not self.cyclic and pointer < 0:
|
|---|
| 60 | return
|
|---|
| 61 | else:
|
|---|
| 62 | if self._get_source("iomark", "end-1c") != prefix:
|
|---|
| 63 | self.text.delete("iomark", "end-1c")
|
|---|
| 64 | self._put_source("iomark", prefix)
|
|---|
| 65 | pointer = prefix = None
|
|---|
| 66 | break
|
|---|
| 67 | item = self.history[pointer]
|
|---|
| 68 | if item[:nprefix] == prefix and len(item) > nprefix:
|
|---|
| 69 | self.text.delete("iomark", "end-1c")
|
|---|
| 70 | self._put_source("iomark", item)
|
|---|
| 71 | break
|
|---|
| 72 | self.text.mark_set("insert", "end-1c")
|
|---|
| 73 | self.text.see("insert")
|
|---|
| 74 | self.text.tag_remove("sel", "1.0", "end")
|
|---|
| 75 | self.history_pointer = pointer
|
|---|
| 76 | self.history_prefix = prefix
|
|---|
| 77 |
|
|---|
| 78 | def history_store(self, source):
|
|---|
| 79 | source = source.strip()
|
|---|
| 80 | if len(source) > 2:
|
|---|
| 81 | # avoid duplicates
|
|---|
| 82 | try:
|
|---|
| 83 | self.history.remove(source)
|
|---|
| 84 | except ValueError:
|
|---|
| 85 | pass
|
|---|
| 86 | self.history.append(source)
|
|---|
| 87 | self.history_pointer = None
|
|---|
| 88 | self.history_prefix = None
|
|---|
