kitty/kitty/session.py
2020-10-25 18:53:57 +05:30

211 lines
8.0 KiB
Python

#!/usr/bin/env python3
# vim:fileencoding=utf-8
# License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
import shlex
import sys
from typing import Generator, List, Optional, Union
from .cli_stub import CLIOptions
from .config_data import to_layout_names
from .constants import kitty_exe
from .layout.interface import all_layouts
from .options_stub import Options
from .os_window_size import WindowSize, WindowSizeData, WindowSizes
from .typing import SpecialWindowInstance
from .utils import log_error, resolved_shell
from .window import Watchers
def get_os_window_sizing_data(opts: Options, session: Optional['Session'] = None) -> WindowSizeData:
if session is None or session.os_window_size is None:
sizes = WindowSizes(WindowSize(*opts.initial_window_width), WindowSize(*opts.initial_window_height))
else:
sizes = session.os_window_size
return WindowSizeData(sizes, opts.remember_window_size, opts.single_window_margin_width, opts.window_margin_width, opts.window_padding_width)
class Tab:
def __init__(self, opts: Options, name: str, watchers: Watchers):
self.windows: List['SpecialWindowInstance'] = []
self.name = name.strip()
self.active_window_idx = 0
self.enabled_layouts = opts.enabled_layouts
self.layout = (self.enabled_layouts or ['tall'])[0]
self.cwd: Optional[str] = None
self.next_title: Optional[str] = None
self.watchers: Watchers = watchers.copy()
class Session:
def __init__(self, default_title: Optional[str] = None):
self.tabs: List[Tab] = []
self.active_tab_idx = 0
self.default_title = default_title
self.os_window_size: Optional[WindowSizes] = None
self.os_window_class: Optional[str] = None
self.watchers = Watchers()
def add_watchers_to_all_windows(self, watchers: Watchers) -> None:
def add(w: 'SpecialWindowInstance') -> 'SpecialWindowInstance':
if w.watchers is None:
return w._replace(watchers=watchers)
wt = w.watchers.copy()
wt.add(watchers)
return w._replace(watchers=wt)
for tab in self.tabs:
tab.windows = [add(w) for w in tab.windows]
def add_tab(self, opts: Options, name: str = '') -> None:
if self.tabs and not self.tabs[-1].windows:
del self.tabs[-1]
if self.tabs:
self.tabs[-1].watchers = self.watchers.copy()
self.tabs.append(Tab(opts, name, self.watchers))
def set_next_title(self, title: str) -> None:
self.tabs[-1].next_title = title.strip()
def set_layout(self, val: str) -> None:
if val.partition(':')[0] not in all_layouts:
raise ValueError('{} is not a valid layout'.format(val))
self.tabs[-1].layout = val
def add_window(self, cmd: Union[None, str, List[str]]) -> None:
if cmd:
cmd = shlex.split(cmd) if isinstance(cmd, str) else cmd
else:
cmd = None
from .tabs import SpecialWindow
t = self.tabs[-1]
watchers: Optional[Watchers] = None
if self.watchers.has_watchers:
watchers = self.watchers.copy()
sw = SpecialWindow(cmd, cwd=t.cwd, override_title=t.next_title or self.default_title, watchers=watchers)
t.windows.append(sw)
t.next_title = None
def add_special_window(self, sw: 'SpecialWindowInstance') -> None:
if self.watchers.has_watchers:
sw = sw._replace(watchers=self.watchers.copy())
self.tabs[-1].windows.append(sw)
def focus(self) -> None:
self.active_tab_idx = max(0, len(self.tabs) - 1)
self.tabs[-1].active_window_idx = max(0, len(self.tabs[-1].windows) - 1)
def set_enabled_layouts(self, raw: str) -> None:
self.tabs[-1].enabled_layouts = to_layout_names(raw)
if self.tabs[-1].layout not in self.tabs[-1].enabled_layouts:
self.tabs[-1].layout = self.tabs[-1].enabled_layouts[0]
def set_cwd(self, val: str) -> None:
self.tabs[-1].cwd = val
def parse_session(raw: str, opts: Options, default_title: Optional[str] = None) -> Generator[Session, None, None]:
def finalize_session(ans: Session) -> Session:
from .tabs import SpecialWindow
for t in ans.tabs:
if not t.windows:
w: Optional[Watchers] = None
if t.watchers.has_watchers:
w = t.watchers.copy()
t.windows.append(SpecialWindow(cmd=resolved_shell(opts), watchers=w, override_title=default_title))
return ans
ans = Session(default_title)
ans.add_tab(opts)
for line in raw.splitlines():
line = line.strip()
if line and not line.startswith('#'):
parts = line.split(maxsplit=1)
if len(parts) == 1:
cmd, rest = parts[0], ''
else:
cmd, rest = parts
cmd, rest = cmd.strip(), rest.strip()
if cmd == 'new_tab':
ans.add_tab(opts, rest)
elif cmd == 'new_os_window':
yield finalize_session(ans)
wt = ans.watchers
ans = Session(default_title)
ans.watchers = wt.copy()
ans.add_tab(opts, rest)
elif cmd == 'layout':
ans.set_layout(rest)
elif cmd == 'launch':
ans.add_window(rest)
elif cmd == 'focus':
ans.focus()
elif cmd == 'enabled_layouts':
ans.set_enabled_layouts(rest)
elif cmd == 'cd':
ans.set_cwd(rest)
elif cmd == 'title':
ans.set_next_title(rest)
elif cmd == 'os_window_size':
from kitty.config_data import window_size
w, h = map(window_size, rest.split(maxsplit=1))
ans.os_window_size = WindowSizes(WindowSize(*w), WindowSize(*h))
elif cmd == 'os_window_class':
ans.os_window_class = rest
elif cmd == 'watcher':
from .launch import load_watch_modules
if rest == 'clear':
ans.watchers = Watchers()
else:
watchers = load_watch_modules((rest,))
if watchers is not None:
ans.watchers.add(watchers)
else:
raise ValueError('Unknown command in session file: {}'.format(cmd))
yield finalize_session(ans)
def create_sessions(
opts: Options,
args: Optional[CLIOptions] = None,
special_window: Optional['SpecialWindowInstance'] = None,
cwd_from: Optional[int] = None,
respect_cwd: bool = False,
default_session: Optional[str] = None
) -> Generator[Session, None, None]:
if args and args.session:
if args.session == '-':
f = sys.stdin
else:
f = open(args.session)
with f:
session_data = f.read()
yield from parse_session(session_data, opts, getattr(args, 'title', None))
return
if default_session and default_session != 'none':
try:
with open(default_session) as f:
session_data = f.read()
except OSError:
log_error('Failed to read from session file, ignoring: {}'.format(default_session))
else:
yield from parse_session(session_data, opts, getattr(args, 'title', None))
return
ans = Session()
current_layout = opts.enabled_layouts[0] if opts.enabled_layouts else 'tall'
ans.add_tab(opts)
ans.tabs[-1].layout = current_layout
if special_window is None:
cmd = args.args if args and args.args else resolved_shell(opts)
if args and args.hold:
cmd = [kitty_exe(), '+hold'] + cmd
from kitty.tabs import SpecialWindow
cwd: Optional[str] = args.directory if respect_cwd and args else None
title = getattr(args, 'title', None)
special_window = SpecialWindow(cmd, override_title=title, cwd_from=cwd_from, cwd=cwd)
ans.add_special_window(special_window)
yield ans