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# -*- coding: utf-8 -*-
from qtpy.QtCore import QObject
class CommandHistory(QObject):
def __init__(self, parent):
super(CommandHistory, self).__init__(parent)
self._cmd_history = []
self._idx = 0
self._pending_input = ''
def add(self, str_):
if str_:
self._cmd_history.append(str_)
self._pending_input = ''
self._idx = len(self._cmd_history)
def inc(self):
# index starts at 0 so + 1 to make sure that we are within the
# limits of the list
if self._cmd_history:
self._idx = min(self._idx + 1, len(self._cmd_history))
self._insert_in_editor(self.current())
def dec(self, _input):
if self._idx == len(self._cmd_history):
self._pending_input = _input
if len(self._cmd_history) and self._idx > 0:
self._idx -= 1
self._insert_in_editor(self.current())
def current(self):
if self._idx == len(self._cmd_history):
return self._pending_input
else:
return self._cmd_history[self._idx]
def _insert_in_editor(self, str_):
self.parent().clear_input_buffer()
self.parent().insert_input_text(str_)
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