kitty/kitty/tabs.py
2020-03-15 13:27:40 +05:30

807 lines
30 KiB
Python

#!/usr/bin/env python3
# vim:fileencoding=utf-8
# License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
import weakref
from collections import deque
from contextlib import suppress
from functools import partial
from typing import (
Deque, Dict, Generator, Iterator, List, NamedTuple,
Optional, Pattern, Sequence, Tuple, cast
)
from .borders import Borders
from .child import Child
from .cli_stub import CLIOptions
from .constants import appname, is_macos, is_wayland
from .fast_data_types import (
add_tab, attach_window, detach_window, get_boss, mark_tab_bar_dirty,
next_window_id, pt_to_px, remove_tab, remove_window, ring_bell,
set_active_tab, swap_tabs, x11_window_id
)
from .layout import (
Layout, Rect, create_layout_object_for, evict_cached_layouts
)
from .options_stub import Options
from .tab_bar import TabBar, TabBarData
from .utils import log_error, resolved_shell
from .window import Window, WindowDict
from .typing import TypedDict, SessionTab, SessionType
class TabDict(TypedDict):
id: int
is_focused: bool
title: str
layout: str
windows: List[WindowDict]
active_window_history: List[int]
class SpecialWindowInstance(NamedTuple):
cmd: Optional[List[str]]
stdin: Optional[bytes]
override_title: Optional[str]
cwd_from: Optional[int]
cwd: Optional[str]
overlay_for: Optional[int]
env: Optional[Dict[str, str]]
def SpecialWindow(
cmd: Optional[List[str]],
stdin: Optional[bytes] = None,
override_title: Optional[str] = None,
cwd_from: Optional[int] = None,
cwd: Optional[str] = None,
overlay_for: Optional[int] = None,
env: Optional[Dict[str, str]] = None
) -> SpecialWindowInstance:
return SpecialWindowInstance(cmd, stdin, override_title, cwd_from, cwd, overlay_for, env)
def add_active_id_to_history(items: Deque[int], item_id: int, maxlen: int = 64) -> None:
with suppress(ValueError):
items.remove(item_id)
items.append(item_id)
if len(items) > maxlen:
items.popleft()
class Tab: # {{{
def __init__(
self,
tab_manager: 'TabManager',
session_tab: Optional['SessionTab'] = None,
special_window: Optional[SpecialWindowInstance] = None,
cwd_from: Optional[int] = None,
no_initial_window: bool = False
):
self._active_window_idx = 0
self.tab_manager_ref = weakref.ref(tab_manager)
self.os_window_id: int = tab_manager.os_window_id
self.id: int = add_tab(self.os_window_id)
self.active_window_history: Deque[int] = deque()
if not self.id:
raise Exception('No OS window with id {} found, or tab counter has wrapped'.format(self.os_window_id))
self.opts, self.args = tab_manager.opts, tab_manager.args
self.recalculate_sizes(update_layout=False)
self.name = getattr(session_tab, 'name', '')
self.enabled_layouts = [x.lower() for x in getattr(session_tab, 'enabled_layouts', None) or self.opts.enabled_layouts]
self.borders = Borders(self.os_window_id, self.id, self.opts)
self.windows: Deque[Window] = deque()
for i, which in enumerate('first second third fourth fifth sixth seventh eighth ninth tenth'.split()):
setattr(self, which + '_window', partial(self.nth_window, num=i))
self._last_used_layout: Optional[str] = None
self._current_layout_name: Optional[str] = None
self.cwd = self.args.directory
if no_initial_window:
self._set_current_layout(self.enabled_layouts[0])
elif session_tab is None:
sl = self.enabled_layouts[0]
self._set_current_layout(sl)
if special_window is None:
self.new_window(cwd_from=cwd_from)
else:
self.new_special_window(special_window)
else:
if session_tab.cwd:
self.cwd = session_tab.cwd
l0 = session_tab.layout
self._set_current_layout(l0)
self.startup(session_tab)
def recalculate_sizes(self, update_layout: bool = True) -> None:
self.margin_width, self.padding_width, self.single_window_margin_width = map(
lambda x: pt_to_px(getattr(self.opts, x), self.os_window_id), (
'window_margin_width', 'window_padding_width', 'single_window_margin_width'))
self.border_width = pt_to_px(self.opts.window_border_width, self.os_window_id)
if update_layout and self.current_layout:
self.current_layout.update_sizes(
self.margin_width, self.single_window_margin_width, self.padding_width, self.border_width)
def take_over_from(self, other_tab: 'Tab') -> None:
self.name, self.cwd = other_tab.name, other_tab.cwd
self.enabled_layouts = list(other_tab.enabled_layouts)
if other_tab._current_layout_name:
self._set_current_layout(other_tab._current_layout_name)
self._last_used_layout = other_tab._last_used_layout
orig_windows = deque(other_tab.windows)
orig_history = deque(other_tab.active_window_history)
orig_active = other_tab._active_window_idx
for window in other_tab.windows:
detach_window(other_tab.os_window_id, other_tab.id, window.id)
other_tab.windows = deque()
other_tab._active_window_idx = 0
self.active_window_history = orig_history
self.windows = orig_windows
self._active_window_idx = orig_active
for window in self.windows:
window.change_tab(self)
attach_window(self.os_window_id, self.id, window.id)
self.relayout()
def _set_current_layout(self, layout_name: str) -> None:
self._last_used_layout = self._current_layout_name
self.current_layout = self.create_layout_object(layout_name)
self._current_layout_name = layout_name
def startup(self, session_tab: 'SessionTab') -> None:
for cmd in session_tab.windows:
if isinstance(cmd, (SpecialWindowInstance,)):
self.new_special_window(cmd)
else:
self.new_window(cmd=cmd)
self.set_active_window_idx(session_tab.active_window_idx)
@property
def active_window_idx(self) -> int:
return self._active_window_idx
@active_window_idx.setter
def active_window_idx(self, val: int) -> None:
try:
old_active_window: Optional[Window] = self.windows[self._active_window_idx]
except Exception:
old_active_window = None
else:
assert old_active_window is not None
wid = old_active_window.id if old_active_window.overlay_for is None else old_active_window.overlay_for
add_active_id_to_history(self.active_window_history, wid)
self._active_window_idx = max(0, min(val, len(self.windows) - 1))
try:
new_active_window: Optional[Window] = self.windows[self._active_window_idx]
except Exception:
new_active_window = None
if old_active_window is not new_active_window:
if old_active_window is not None:
old_active_window.focus_changed(False)
if new_active_window is not None:
new_active_window.focus_changed(True)
tm = self.tab_manager_ref()
if tm is not None:
self.relayout_borders()
tm.mark_tab_bar_dirty()
@property
def active_window(self) -> Optional[Window]:
return self.windows[self.active_window_idx] if self.windows else None
@property
def title(self) -> str:
return cast(str, getattr(self.active_window, 'title', appname))
def set_title(self, title: str) -> None:
self.name = title or ''
tm = self.tab_manager_ref()
if tm is not None:
tm.mark_tab_bar_dirty()
def title_changed(self, window: Window) -> None:
if window is self.active_window:
tm = self.tab_manager_ref()
if tm is not None:
tm.mark_tab_bar_dirty()
def on_bell(self, window: Window) -> None:
tm = self.tab_manager_ref()
if tm is not None:
self.relayout_borders()
tm.mark_tab_bar_dirty()
def visible_windows(self) -> Generator[Window, None, None]:
for w in self.windows:
if w.is_visible_in_layout:
yield w
def relayout(self) -> None:
if self.windows:
self.active_window_idx = self.current_layout(self.windows, self.active_window_idx)
self.relayout_borders()
def relayout_borders(self) -> None:
tm = self.tab_manager_ref()
if tm is not None:
visible_windows = [w for w in self.windows if w.is_visible_in_layout]
w = self.active_window
self.borders(
windows=visible_windows, active_window=w,
current_layout=self.current_layout, extra_blank_rects=tm.blank_rects,
padding_width=self.padding_width, border_width=self.border_width,
draw_window_borders=self.current_layout.needs_window_borders and len(visible_windows) > 1
)
if w is not None:
w.change_titlebar_color()
def create_layout_object(self, name: str) -> Layout:
return create_layout_object_for(
name, self.os_window_id, self.id, self.margin_width,
self.single_window_margin_width, self.padding_width,
self.border_width)
def next_layout(self) -> None:
if len(self.enabled_layouts) > 1:
for i, layout_name in enumerate(self.enabled_layouts):
if layout_name == self.current_layout.full_name:
idx = i
break
else:
idx = -1
nl = self.enabled_layouts[(idx + 1) % len(self.enabled_layouts)]
self._set_current_layout(nl)
self.relayout()
def last_used_layout(self) -> None:
if len(self.enabled_layouts) > 1 and self._last_used_layout and self._last_used_layout != self._current_layout_name:
self._set_current_layout(self._last_used_layout)
self.relayout()
def goto_layout(self, layout_name: str, raise_exception: bool = False) -> None:
layout_name = layout_name.lower()
if layout_name not in self.enabled_layouts:
if raise_exception:
raise ValueError(layout_name)
log_error('Unknown or disabled layout: {}'.format(layout_name))
return
self._set_current_layout(layout_name)
self.relayout()
def resize_window_by(self, window_id: int, increment: float, is_horizontal: bool) -> Optional[str]:
increment_as_percent = self.current_layout.bias_increment_for_cell(is_horizontal) * increment
if self.current_layout.modify_size_of_window(self.windows, window_id, increment_as_percent, is_horizontal):
self.relayout()
return None
return 'Could not resize'
def resize_window(self, quality: str, increment: int) -> None:
if increment < 1:
raise ValueError(increment)
is_horizontal = quality in ('wider', 'narrower')
increment *= 1 if quality in ('wider', 'taller') else -1
if self.resize_window_by(
self.windows[self.active_window_idx].id,
increment, is_horizontal) is not None:
ring_bell()
def reset_window_sizes(self) -> None:
if self.current_layout.remove_all_biases():
self.relayout()
def layout_action(self, action_name: str, args: Sequence[str]) -> None:
ret = self.current_layout.layout_action(action_name, args, self.windows, self.active_window_idx)
if ret is None:
ring_bell()
return
if not isinstance(ret, bool) and isinstance(ret, int):
self.active_window_idx = ret
self.relayout()
def launch_child(
self,
use_shell: bool = False,
cmd: Optional[List[str]] = None,
stdin: Optional[bytes] = None,
cwd_from: Optional[int] = None,
cwd: Optional[str] = None,
env: Optional[Dict[str, str]] = None,
allow_remote_control: bool = False
) -> Child:
if cmd is None:
if use_shell:
cmd = resolved_shell(self.opts)
else:
cmd = self.args.args or resolved_shell(self.opts)
fenv: Dict[str, str] = {}
if env:
fenv.update(env)
fenv['KITTY_WINDOW_ID'] = str(next_window_id())
if not is_macos and not is_wayland():
try:
fenv['WINDOWID'] = str(x11_window_id(self.os_window_id))
except Exception:
import traceback
traceback.print_exc()
ans = Child(cmd, cwd or self.cwd, self.opts, stdin, fenv, cwd_from, allow_remote_control=allow_remote_control)
ans.fork()
return ans
def _add_window(self, window: Window, location: Optional[str] = None) -> None:
self.active_window_idx = self.current_layout.add_window(self.windows, window, self.active_window_idx, location)
self.relayout_borders()
def new_window(
self,
use_shell: bool = True,
cmd: Optional[List[str]] = None,
stdin: Optional[bytes] = None,
override_title: Optional[str] = None,
cwd_from: Optional[int] = None,
cwd: Optional[str] = None,
overlay_for: Optional[int] = None,
env: Optional[Dict[str, str]] = None,
location: Optional[str] = None,
copy_colors_from: Optional[Window] = None,
allow_remote_control: bool = False,
marker: Optional[str] = None
) -> Window:
child = self.launch_child(
use_shell=use_shell, cmd=cmd, stdin=stdin, cwd_from=cwd_from, cwd=cwd, env=env, allow_remote_control=allow_remote_control)
window = Window(self, child, self.opts, self.args, override_title=override_title, copy_colors_from=copy_colors_from)
if overlay_for is not None:
overlaid = next(w for w in self.windows if w.id == overlay_for)
window.overlay_for = overlay_for
overlaid.overlay_window_id = window.id
# Must add child before laying out so that resize_pty succeeds
get_boss().add_child(window)
self._add_window(window, location=location)
if marker:
try:
window.set_marker(marker)
except Exception:
import traceback
traceback.print_exc()
return window
def new_special_window(
self,
special_window: SpecialWindowInstance,
location: Optional[str] = None,
copy_colors_from: Optional[Window] = None,
allow_remote_control: bool = False
) -> Window:
return self.new_window(
use_shell=False, cmd=special_window.cmd, stdin=special_window.stdin,
override_title=special_window.override_title,
cwd_from=special_window.cwd_from, cwd=special_window.cwd, overlay_for=special_window.overlay_for,
env=special_window.env, location=location, copy_colors_from=copy_colors_from,
allow_remote_control=allow_remote_control
)
def close_window(self) -> None:
if self.windows:
self.remove_window(self.windows[self.active_window_idx])
def previous_active_window_idx(self, num: int) -> Optional[int]:
try:
old_window_id = self.active_window_history[-num]
except IndexError:
return None
for idx, w in enumerate(self.windows):
if w.id == old_window_id:
return idx
def remove_window(self, window: Window, destroy: bool = True) -> None:
idx = self.previous_active_window_idx(1)
next_window_id = None
if idx is not None:
next_window_id = self.windows[idx].id
active_window_idx = self.current_layout.remove_window(self.windows, window, self.active_window_idx)
if destroy:
remove_window(self.os_window_id, self.id, window.id)
else:
detach_window(self.os_window_id, self.id, window.id)
if window.overlay_for is not None:
for idx, q in enumerate(self.windows):
if q.id == window.overlay_for:
active_window_idx = idx
next_window_id = q.id
break
if next_window_id is None and len(self.windows) > active_window_idx:
next_window_id = self.windows[active_window_idx].id
if next_window_id is not None:
for idx, window in enumerate(self.windows):
if window.id == next_window_id:
self.active_window_idx = self.current_layout.set_active_window(self.windows, idx)
break
else:
self.active_window_idx = active_window_idx
else:
self.active_window_idx = active_window_idx
self.relayout_borders()
active_window = self.active_window
if active_window:
self.title_changed(active_window)
def detach_window(self, window: Window) -> Tuple[Optional[Window], Optional[Window]]:
underlaid_window: Optional[Window] = None
overlaid_window: Optional[Window] = window
if window.overlay_for:
for x in self.windows:
if x.id == window.overlay_for:
underlaid_window = x
break
elif window.overlay_window_id:
underlaid_window = window
overlaid_window = None
for x in self.windows:
if x.id == window.overlay_window_id:
overlaid_window = x
break
if overlaid_window is not None:
self.remove_window(overlaid_window, destroy=False)
if underlaid_window is not None:
self.remove_window(underlaid_window, destroy=False)
return underlaid_window, overlaid_window
def attach_window(self, window: Window) -> None:
window.change_tab(self)
attach_window(self.os_window_id, self.id, window.id)
self._add_window(window)
def set_active_window_idx(self, idx: int) -> None:
if idx != self.active_window_idx:
self.active_window_idx = self.current_layout.set_active_window(self.windows, idx)
self.relayout_borders()
def set_active_window(self, window: Window) -> None:
try:
idx = self.windows.index(window)
except ValueError:
return
self.set_active_window_idx(idx)
def get_nth_window(self, n: int) -> Optional[Window]:
if self.windows:
return self.current_layout.nth_window(self.windows, n)
def nth_window(self, num: int = 0) -> None:
if self.windows:
if num < 0:
idx = self.previous_active_window_idx(-num)
if idx is None:
return
self.active_window_idx = self.current_layout.set_active_window(self.windows, idx)
else:
self.active_window_idx = self.current_layout.activate_nth_window(self.windows, num)
self.relayout_borders()
def _next_window(self, delta: int = 1) -> None:
if len(self.windows) > 1:
self.active_window_idx = self.current_layout.next_window(self.windows, self.active_window_idx, delta)
self.relayout_borders()
def next_window(self) -> None:
self._next_window()
def previous_window(self) -> None:
self._next_window(-1)
prev_window = previous_window
def neighboring_window(self, which: str) -> None:
neighbors = self.current_layout.neighbors(self.windows, self.active_window_idx)
candidates = cast(Optional[Tuple[int, ...]], neighbors.get(which))
if candidates:
self.active_window_idx = self.current_layout.set_active_window(self.windows, candidates[0])
self.relayout_borders()
def move_window(self, delta: int = 1) -> None:
self.active_window_idx = self.current_layout.move_window(self.windows, self.active_window_idx, delta)
self.relayout()
def move_window_to_top(self) -> None:
self.move_window(-self.active_window_idx)
def move_window_forward(self) -> None:
self.move_window()
def move_window_backward(self) -> None:
self.move_window(-1)
def list_windows(self, active_window: Optional[Window]) -> Generator[WindowDict, None, None]:
for w in self:
yield w.as_dict(is_focused=w is active_window)
def matches(self, field: str, pat: Pattern) -> bool:
if field == 'id':
return bool(pat.pattern == str(self.id))
if field == 'title':
return pat.search(self.name or self.title) is not None
return False
def __iter__(self) -> Iterator[Window]:
return iter(self.windows)
def __len__(self) -> int:
return len(self.windows)
def __contains__(self, window: Window) -> bool:
return window in self.windows
def destroy(self) -> None:
evict_cached_layouts(self.id)
for w in self.windows:
w.destroy()
self.windows = deque()
def __repr__(self) -> str:
return 'Tab(title={}, id={})'.format(self.name or self.title, hex(id(self)))
def make_active(self) -> None:
tm = self.tab_manager_ref()
if tm is not None:
tm.set_active_tab(self)
# }}}
class TabManager: # {{{
def __init__(self, os_window_id: int, opts: Options, args: CLIOptions, startup_session: Optional[SessionType] = None):
self.os_window_id = os_window_id
self.last_active_tab_id = None
self.opts, self.args = opts, args
self.tab_bar_hidden = self.opts.tab_bar_style == 'hidden'
self.tabs: List[Tab] = []
self.active_tab_history: Deque[int] = deque()
self.tab_bar = TabBar(self.os_window_id, opts)
self._active_tab_idx = 0
if startup_session is not None:
for t in startup_session.tabs:
self._add_tab(Tab(self, session_tab=t))
self._set_active_tab(max(0, min(startup_session.active_tab_idx, len(self.tabs) - 1)))
@property
def active_tab_idx(self) -> int:
return self._active_tab_idx
@active_tab_idx.setter
def active_tab_idx(self, val: int) -> None:
try:
old_active_tab: Optional[Tab] = self.tabs[self._active_tab_idx]
except Exception:
old_active_tab = None
else:
assert old_active_tab is not None
add_active_id_to_history(self.active_tab_history, old_active_tab.id)
self._active_tab_idx = max(0, min(val, len(self.tabs) - 1))
try:
new_active_tab: Optional[Tab] = self.tabs[self._active_tab_idx]
except Exception:
new_active_tab = None
if old_active_tab is not new_active_tab:
if old_active_tab is not None:
w = old_active_tab.active_window
if w is not None:
w.focus_changed(False)
if new_active_tab is not None:
w = new_active_tab.active_window
if w is not None:
w.focus_changed(True)
def refresh_sprite_positions(self) -> None:
if not self.tab_bar_hidden:
self.tab_bar.screen.refresh_sprite_positions()
@property
def tab_bar_should_be_visible(self) -> bool:
return len(self.tabs) >= self.opts.tab_bar_min_tabs
def _add_tab(self, tab: Tab) -> None:
visible_before = self.tab_bar_should_be_visible
self.tabs.append(tab)
if not visible_before and self.tab_bar_should_be_visible:
self.tabbar_visibility_changed()
def _remove_tab(self, tab: Tab) -> None:
visible_before = self.tab_bar_should_be_visible
remove_tab(self.os_window_id, tab.id)
self.tabs.remove(tab)
if visible_before and not self.tab_bar_should_be_visible:
self.tabbar_visibility_changed()
def _set_active_tab(self, idx: int) -> None:
self.active_tab_idx = idx
set_active_tab(self.os_window_id, idx)
def tabbar_visibility_changed(self) -> None:
if not self.tab_bar_hidden:
self.tab_bar.layout()
self.resize(only_tabs=True)
def mark_tab_bar_dirty(self) -> None:
if self.tab_bar_should_be_visible and not self.tab_bar_hidden:
mark_tab_bar_dirty(self.os_window_id)
def update_tab_bar_data(self) -> None:
self.tab_bar.update(self.tab_bar_data)
def update_dpi_based_sizes(self) -> None:
for tab in self.tabs:
tab.recalculate_sizes()
def resize(self, only_tabs: bool = False) -> None:
if not only_tabs:
if not self.tab_bar_hidden:
self.tab_bar.layout()
self.mark_tab_bar_dirty()
for tab in self.tabs:
tab.relayout()
def set_active_tab_idx(self, idx: int) -> None:
self._set_active_tab(idx)
tab = self.active_tab
if tab is not None:
tab.relayout_borders()
self.mark_tab_bar_dirty()
def set_active_tab(self, tab: Tab) -> bool:
try:
idx = self.tabs.index(tab)
except Exception:
return False
self.set_active_tab_idx(idx)
return True
def next_tab(self, delta: int = 1) -> None:
if len(self.tabs) > 1:
self.set_active_tab_idx((self.active_tab_idx + len(self.tabs) + delta) % len(self.tabs))
def goto_tab(self, tab_num: int) -> None:
if tab_num >= len(self.tabs):
tab_num = max(0, len(self.tabs) - 1)
if tab_num >= 0:
self.set_active_tab_idx(tab_num)
else:
try:
old_active_tab_id = self.active_tab_history[tab_num]
except IndexError:
return
for idx, tab in enumerate(self.tabs):
if tab.id == old_active_tab_id:
self.set_active_tab_idx(idx)
break
def __iter__(self) -> Iterator[Tab]:
return iter(self.tabs)
def __len__(self) -> int:
return len(self.tabs)
def list_tabs(self, active_tab: Optional[Tab], active_window: Optional[Window]) -> Generator[TabDict, None, None]:
for tab in self:
yield {
'id': tab.id,
'is_focused': tab is active_tab,
'title': tab.name or tab.title,
'layout': str(tab.current_layout.name),
'windows': list(tab.list_windows(active_window)),
'active_window_history': list(tab.active_window_history),
}
@property
def active_tab(self) -> Optional[Tab]:
return self.tabs[self.active_tab_idx] if self.tabs else None
@property
def active_window(self) -> Optional[Window]:
t = self.active_tab
if t is not None:
return t.active_window
def tab_for_id(self, tab_id: int) -> Optional[Tab]:
for t in self.tabs:
if t.id == tab_id:
return t
def move_tab(self, delta: int = 1) -> None:
if len(self.tabs) > 1:
idx = self.active_tab_idx
nidx = (idx + len(self.tabs) + delta) % len(self.tabs)
step = 1 if idx < nidx else -1
for i in range(idx, nidx, step):
self.tabs[i], self.tabs[i + step] = self.tabs[i + step], self.tabs[i]
swap_tabs(self.os_window_id, i, i + step)
self._set_active_tab(nidx)
self.mark_tab_bar_dirty()
def new_tab(
self,
special_window: Optional[SpecialWindowInstance] = None,
cwd_from: Optional[int] = None,
as_neighbor: bool = False,
empty_tab: bool = False,
location: str = 'last'
) -> Tab:
idx = len(self.tabs)
orig_active_tab_idx = self.active_tab_idx
self._add_tab(Tab(self, no_initial_window=True) if empty_tab else Tab(self, special_window=special_window, cwd_from=cwd_from))
self._set_active_tab(idx)
if as_neighbor:
location = 'after'
if location == 'neighbor':
location = 'after'
if len(self.tabs) > 1 and location != 'last':
if location == 'first':
desired_idx = 0
else:
desired_idx = orig_active_tab_idx + (0 if location == 'before' else 1)
if idx != desired_idx:
for i in range(idx, desired_idx, -1):
self.tabs[i], self.tabs[i-1] = self.tabs[i-1], self.tabs[i]
swap_tabs(self.os_window_id, i, i-1)
self._set_active_tab(desired_idx)
idx = desired_idx
self.mark_tab_bar_dirty()
return self.tabs[idx]
def remove(self, tab: Tab) -> None:
self._remove_tab(tab)
next_active_tab = -1
while True:
try:
self.active_tab_history.remove(tab.id)
except ValueError:
break
if self.opts.tab_switch_strategy == 'previous':
while self.active_tab_history and next_active_tab < 0:
tab_id = self.active_tab_history.pop()
for idx, qtab in enumerate(self.tabs):
if qtab.id == tab_id:
next_active_tab = idx
break
elif self.opts.tab_switch_strategy == 'left':
next_active_tab = max(0, self.active_tab_idx - 1)
if next_active_tab < 0:
next_active_tab = max(0, min(self.active_tab_idx, len(self.tabs) - 1))
self._set_active_tab(next_active_tab)
self.mark_tab_bar_dirty()
tab.destroy()
@property
def tab_bar_data(self) -> List[TabBarData]:
at = self.active_tab
ans = []
for t in self.tabs:
title = (t.name or t.title or appname).strip()
needs_attention = False
for w in t:
if w.needs_attention:
needs_attention = True
break
ans.append(TabBarData(title, t is at, needs_attention))
return ans
def activate_tab_at(self, x: int) -> None:
i = self.tab_bar.tab_at(x)
if i is not None:
self.set_active_tab_idx(i)
@property
def blank_rects(self) -> Tuple[Rect, ...]:
return self.tab_bar.blank_rects if self.tab_bar_should_be_visible else ()
def destroy(self) -> None:
for t in self:
t.destroy()
self.tab_bar.destroy()
del self.tab_bar
del self.tabs
# }}}