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Mini Shell
Mini Shell
import urwid
import blinker
import textwrap
from mitmproxy import command
from mitmproxy.tools.console import layoutwidget
from mitmproxy.tools.console import signals
HELP_HEIGHT = 5
command_focus_change = blinker.Signal()
class CommandItem(urwid.WidgetWrap):
def __init__(self, walker, cmd: command.Command, focused: bool):
self.walker, self.cmd, self.focused = walker, cmd, focused
super().__init__(None)
self._w = self.get_widget()
def get_widget(self):
parts = [
("focus", ">> " if self.focused else " "),
("title", self.cmd.name)
]
if self.cmd.parameters:
parts += [
("text", " "),
("text", " ".join(str(param) for param in self.cmd.parameters)),
]
if self.cmd.return_type:
parts += [
("title", " -> "),
("text", command.typename(self.cmd.return_type)),
]
return urwid.AttrMap(
urwid.Padding(urwid.Text(parts)),
"text"
)
def get_edit_text(self):
return self._w[1].get_edit_text()
def selectable(self):
return True
def keypress(self, size, key):
return key
class CommandListWalker(urwid.ListWalker):
def __init__(self, master):
self.master = master
self.index = 0
self.refresh()
def refresh(self):
self.cmds = list(self.master.commands.commands.values())
self.cmds.sort(key=lambda x: x.signature_help())
self.set_focus(self.index)
def get_edit_text(self):
return self.focus_obj.get_edit_text()
def _get(self, pos):
cmd = self.cmds[pos]
return CommandItem(self, cmd, pos == self.index)
def get_focus(self):
return self.focus_obj, self.index
def set_focus(self, index):
cmd = self.cmds[index]
self.index = index
self.focus_obj = self._get(self.index)
command_focus_change.send(cmd.help or "")
def get_next(self, pos):
if pos >= len(self.cmds) - 1:
return None, None
pos = pos + 1
return self._get(pos), pos
def get_prev(self, pos):
pos = pos - 1
if pos < 0:
return None, None
return self._get(pos), pos
class CommandsList(urwid.ListBox):
def __init__(self, master):
self.master = master
self.walker = CommandListWalker(master)
super().__init__(self.walker)
def keypress(self, size, key):
if key == "m_select":
foc, idx = self.get_focus()
signals.status_prompt_command.send(partial=foc.cmd.name + " ")
elif key == "m_start":
self.set_focus(0)
self.walker._modified()
elif key == "m_end":
self.set_focus(len(self.walker.cmds) - 1)
self.walker._modified()
return super().keypress(size, key)
class CommandHelp(urwid.Frame):
def __init__(self, master):
self.master = master
super().__init__(self.widget(""))
self.set_active(False)
command_focus_change.connect(self.sig_mod)
def set_active(self, val):
h = urwid.Text("Command Help")
style = "heading" if val else "heading_inactive"
self.header = urwid.AttrWrap(h, style)
def widget(self, txt):
cols, _ = self.master.ui.get_cols_rows()
return urwid.ListBox(
[urwid.Text(i) for i in textwrap.wrap(txt, cols)]
)
def sig_mod(self, txt):
self.set_body(self.widget(txt))
class Commands(urwid.Pile, layoutwidget.LayoutWidget):
title = "Command Reference"
keyctx = "commands"
def __init__(self, master):
oh = CommandHelp(master)
super().__init__(
[
CommandsList(master),
(HELP_HEIGHT, oh),
]
)
self.master = master
def layout_pushed(self, prev):
self.widget_list[0].walker.refresh()
def keypress(self, size, key):
if key == "m_next":
self.focus_position = (
self.focus_position + 1
) % len(self.widget_list)
self.widget_list[1].set_active(self.focus_position == 1)
key = None
# This is essentially a copypasta from urwid.Pile's keypress handler.
# So much for "closed for modification, but open for extension".
item_rows = None
if len(size) == 2:
item_rows = self.get_item_rows(size, focus = True)
i = self.widget_list.index(self.focus_item)
tsize = self.get_item_size(size, i, True, item_rows)
return self.focus_item.keypress(tsize, key)
Zerion Mini Shell 1.0