Files
cowork-local/ui/composer.py
T
NamPDTandClaude Opus 5 291a611737 chore: sync local working copy as of 2026-08-15
The Gitea repo was initialised from an earlier snapshot, so main and the
machine this runs on had drifted apart in 153 files before any UI work
started. This commit brings the branch up to the local tree as it stood
on 2026-08-15 21:31 (from cowork_local.7z), so the redesign that follows
shows up as its own reviewable diff instead of being mixed in with the
pre-existing divergence.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-17 11:38:18 +09:00

652 lines
28 KiB
Python

"""Message composer: multiline input, attachments, Send/Stop, message queue.
Several turns can run at once (up to the configured parallel limit). Once that
limit is reached the composer switches to "Queue" mode: extra messages (with
their attachments) are held in the queue and dispatched automatically as running
turns finish and free up a slot. Files/images can be attached to a message.
"""
from __future__ import annotations
from datetime import datetime
from pathlib import Path
from typing import Dict, List
from PySide6.QtCore import Qt, Signal
from PySide6.QtGui import QImage, QKeyEvent
from PySide6.QtWidgets import (
QFileDialog, QHBoxLayout, QLabel, QListView, QListWidget, QListWidgetItem,
QPlainTextEdit, QPushButton, QVBoxLayout, QWidget,
)
from ..config import CONFIG_DIR
from ..i18n import on_language_changed, tr
from ..theme import current_palette
from .icons import icon, IconLabel
def _save_pasted_image(image) -> str | None:
"""Save a clipboard/drag QImage to the config dir; return its path."""
try:
if not isinstance(image, QImage) or image.isNull():
return None
folder = CONFIG_DIR / "pasted"
folder.mkdir(parents=True, exist_ok=True)
name = "paste-" + datetime.now().strftime("%Y%m%d-%H%M%S-%f")[:-3] + ".png"
path = folder / name
if image.save(str(path), "PNG"):
return str(path)
except Exception:
return None
return None
def _is_local_skill_command(text: str) -> bool:
"""True for a bare ``/skill`` (list) or ``/skill:<name>`` (select) command that
is answered inline instantly — these must run even while a turn is busy, so they
bypass the message queue (unlike ``/skill:<name> <request>``, which is a real
turn and should queue)."""
import re
t = (text or "").strip()
return t == "/skill" or bool(re.match(r"^/skill:[\w\-.]+$", t))
def _is_local_agent_command(text: str) -> bool:
"""Same as ``_is_local_skill_command`` but for the ``/agent`` directive: a bare
``/agent`` (list) or ``/agent:<name>`` (select) is answered inline instantly."""
import re
t = (text or "").strip()
return t == "/agent" or bool(re.match(r"^/agent:[\w\-.]+$", t))
def _paths_from_mime(md) -> List[str]:
paths: List[str] = []
if md.hasUrls():
for u in md.urls():
if u.isLocalFile():
paths.append(u.toLocalFile())
if not paths and md.hasImage():
p = _save_pasted_image(md.imageData())
if p:
paths.append(p)
return paths
class _SkillPopup(QListWidget):
"""The ``/skill`` picker.
Shown as a NON-activating overlay (``WA_ShowWithoutActivating``) — crucially it
does NOT grab the keyboard, so the input keeps focus and the user can keep
typing their request after ``/skill``. Navigation / accept / Esc are handled by
the parent ``_Input``'s key handler (which still receives every key); clicking
an item selects it; the popup auto-hides when the input loses focus."""
def __init__(self, parent=None):
super().__init__(parent)
self.setWindowFlags(Qt.Tool | Qt.FramelessWindowHint
| Qt.WindowStaysOnTopHint | Qt.NoDropShadowWindowHint)
self.setAttribute(Qt.WA_ShowWithoutActivating, True)
self.setFocusPolicy(Qt.NoFocus)
class _Input(QPlainTextEdit):
"""Plain text edit: submits on Enter, accepts pasted/dropped images & files."""
submit = Signal()
media_added = Signal(list)
manage_skills = Signal() # user picked "Manage skills…" in the /skill popup
MIN_HEIGHT = 64 # ~2 lines
MAX_HEIGHT = 220 # ~8 lines, then it scrolls
def __init__(self):
super().__init__()
self.setAcceptDrops(True)
# Use a clean Latin/Vietnamese-friendly UI font for the input (the global
# '*' rule falls back to Japanese faces, which mis-render some glyphs).
self.setStyleSheet(
"font-family: 'Segoe UI', 'Helvetica Neue', 'Arial', sans-serif; font-size: 14px;"
)
# Grow with the text (up to MAX_HEIGHT), then scroll instead.
self.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.textChanged.connect(self._adjust_height)
# "/skill" + "/agent" command popup — lists skills / agents inline.
self._skill_popup = _SkillPopup(self)
self._popup_kind = "skill" # which command the popup is showing
self._skill_popup.itemClicked.connect(self._accept_item)
self.textChanged.connect(self._maybe_show_skills)
self._adjust_height()
# ---- /skill autocomplete ----------------------------------------
def _skill_token(self):
"""Locate a ``/skill[:partial]`` command the cursor is currently typing —
ANYWHERE in the message, not just at the start (so "dùng /skill:foo …"
with text typed before it still triggers the picker). Mirrors
``core.skills.parse_skill_command``'s whitespace-boundary rule.
Returns ``(start_offset, partial_filter)`` — ``start_offset`` is where the
``/skill`` token begins in the document, ``partial_filter`` is the text
typed after ``:`` (``''`` while still typing the command word itself) — or
``None`` when the cursor isn't inside a ``/skill`` token."""
import re
pos = self.textCursor().position()
before = self.toPlainText()[:pos]
# The token is the whitespace-delimited word ending at the cursor; its
# start must be the document start or follow whitespace (same boundary
# parse_skill_command enforces with its (?<!\S) lookbehind).
start = re.search(r"\S*$", before).start()
token = before[start:]
if len(token) >= 2 and "/skill".startswith(token):
return start, "" # typing "/s", "/sk", … "/skill" → show the whole list
m = re.match(r"^/skill:?([\w\-.]*)$", token)
return (start, m.group(1)) if m else None
def _skill_filter(self):
"""Return the partial filter while a '/skill' command is being typed
(anywhere in the message), or None."""
tok = self._skill_token()
return tok[1] if tok else None
def _agent_token(self):
"""Locate a ``/agent[:partial]`` command the cursor is typing (mirror of
``_skill_token``). Returns ``(start_offset, partial)`` or None."""
import re
pos = self.textCursor().position()
before = self.toPlainText()[:pos]
start = re.search(r"\S*$", before).start()
token = before[start:]
if len(token) >= 2 and "/agent".startswith(token):
return start, ""
m = re.match(r"^/agent:?([\w\-.]*)$", token)
return (start, m.group(1)) if m else None
def _maybe_show_skills(self) -> None:
# One popup serves both commands: show skills while typing /skill, agents
# while typing /agent (Cowork parity with the Co4E chat).
stok = self._skill_token()
if stok is not None:
self._popup_kind = "skill"
self._populate_skill_popup(stok[1])
self._show_cmd_popup()
return
atok = self._agent_token()
if atok is not None:
self._popup_kind = "agent"
self._populate_agent_popup(atok[1])
self._show_cmd_popup()
return
self._skill_popup.hide()
def _populate_skill_popup(self, filt: str) -> None:
try:
from ..core.skills import builtin_skills, list_skills
# Include always-on built-ins so the picker is usable before the user
# has created any custom skill.
skills = list_skills() + builtin_skills()
except Exception:
skills = []
f = (filt or "").lower()
matches = [s for s in skills
if f in s.name.lower() or f in s.slug.lower() or f in (s.description or "").lower()]
self._skill_popup.clear()
for s in matches:
text = ("✓ " if s.enabled else " ") + s.name
if s.description:
text += f" — {s.description}"
item = QListWidgetItem(text)
item.setData(Qt.UserRole, s.slug)
self._skill_popup.addItem(item)
if not matches:
empty = QListWidgetItem(tr("composer.no_skills"))
empty.setFlags(Qt.NoItemFlags)
self._skill_popup.addItem(empty)
manage = QListWidgetItem(tr("composer.manage_skills"))
manage.setData(Qt.UserRole, "__manage__")
self._skill_popup.addItem(manage)
self._skill_popup.setCurrentRow(0 if matches else self._skill_popup.count() - 1)
def _populate_agent_popup(self, filt: str) -> None:
try:
from ..core.agent_command import collect_agents
agents = collect_agents("") # built-ins + local admin + custom agents
except Exception:
agents = []
f = (filt or "").lower()
matches = [a for a in agents
if f in a["slug"].lower() or f in a["name"].lower() or f in (a.get("desc") or "").lower()]
self._skill_popup.clear()
for a in matches:
text = a["name"] + (f" — {a['desc']}" if a.get("desc") else "")
item = QListWidgetItem(text)
item.setData(Qt.UserRole, a["slug"])
self._skill_popup.addItem(item)
if not matches:
empty = QListWidgetItem(tr("composer.no_agents"))
empty.setFlags(Qt.NoItemFlags)
self._skill_popup.addItem(empty)
self._skill_popup.setCurrentRow(0 if matches else self._skill_popup.count() - 1)
def _show_cmd_popup(self) -> None:
rows = min(7, self._skill_popup.count())
h = 10 + rows * 22
self._skill_popup.resize(max(300, self.width()), h)
top_left = self.mapToGlobal(self.rect().topLeft())
self._skill_popup.move(top_left.x(), top_left.y() - h - 2)
self._skill_popup.show()
def _dismiss_skill_popup(self) -> None:
"""Hide the /skill picker (Esc)."""
self._skill_popup.hide()
def focusOutEvent(self, e) -> None: # noqa: N802
# The popup never grabs focus, so a click away lands here → dismiss it
# (unless the click is on the popup itself, e.g. picking an item).
if not self._skill_popup.underMouse():
self._skill_popup.hide()
super().focusOutEvent(e)
def _accept_item(self, item=None) -> None:
"""Dispatch popup selection to the right handler based on which command
(``/skill`` or ``/agent``) the popup is currently showing."""
if self._popup_kind == "agent":
self._accept_agent(item)
else:
self._accept_skill(item)
def _replace_token(self, tok, replacement: str) -> None:
pos = self.textCursor().position()
start = tok[0] if tok else pos
full = self.toPlainText()
new_text = full[:start] + replacement + full[pos:]
new_pos = start + len(replacement)
self.blockSignals(True)
self.setPlainText(new_text)
self.blockSignals(False)
cur = self.textCursor()
cur.setPosition(min(new_pos, len(new_text)))
self.setTextCursor(cur)
self._adjust_height()
self.setFocus()
def _accept_skill(self, item=None) -> None:
item = item or self._skill_popup.currentItem()
self._skill_popup.hide()
if item is None:
return
slug = item.data(Qt.UserRole)
if slug == "__manage__":
self.manage_skills.emit() # open the Skills manager
return
if not slug:
return
# Replace ONLY the /skill token the cursor is on — text typed before it
# ("dùng …") and after it is preserved, so the command can sit mid-sentence.
self._replace_token(self._skill_token(), f"/skill:{slug} ")
def _accept_agent(self, item=None) -> None:
item = item or self._skill_popup.currentItem()
self._skill_popup.hide()
if item is None:
return
slug = item.data(Qt.UserRole)
if not slug:
return
self._replace_token(self._agent_token(), f"/agent:{slug} ")
def _adjust_height(self, *_a) -> None:
# QPlainTextEdit reports the document height in LINES (not pixels), so
# convert via line spacing to get the real pixel height.
lines = self.document().size().height() or 1
line_px = self.fontMetrics().lineSpacing()
h = int(lines * line_px + 2 * self.frameWidth() + 12)
h = max(self.MIN_HEIGHT, min(self.MAX_HEIGHT, h))
if h != self.height():
self.setFixedHeight(h)
def keyPressEvent(self, e: QKeyEvent) -> None: # noqa: N802
if self._skill_popup.isVisible():
k = e.key()
if k in (Qt.Key_Down, Qt.Key_Up):
n = self._skill_popup.count()
if n:
step = 1 if k == Qt.Key_Down else -1
self._skill_popup.setCurrentRow((self._skill_popup.currentRow() + step) % n)
return
if k == Qt.Key_Tab:
self._accept_item() # Tab = autocomplete the highlighted item
return
if k == Qt.Key_Escape:
self._dismiss_skill_popup()
return
if k in (Qt.Key_Return, Qt.Key_Enter):
item = self._skill_popup.currentItem()
slug = item.data(Qt.UserRole) if item else None
is_agent = self._popup_kind == "agent"
tok = self._agent_token() if is_agent else self._skill_token()
prefix = "/agent:" if is_agent else "/skill:"
token = self.toPlainText()[tok[0]:self.textCursor().position()] if tok else ""
exact = bool(slug) and slug != "__manage__" and token == f"{prefix}{slug}"
if slug and slug != "__manage__" and not exact:
# A suggestion is highlighted but not yet fully typed —
# Enter completes it into the box first (same as Tab),
# instead of submitting a partial/mistyped slug that
# the parser would just reject as "not found".
self._accept_item(item)
return
# Slug already fully typed (or nothing usable is highlighted,
# e.g. the "no skills found" placeholder) — Enter RUNS the
# /skill command as typed: hide the popup and fall through to
# the normal submit below.
self._skill_popup.hide()
if e.key() in (Qt.Key_Return, Qt.Key_Enter) and not (e.modifiers() & Qt.ShiftModifier):
self.submit.emit()
return
super().keyPressEvent(e)
def insertFromMimeData(self, source) -> None: # noqa: N802 - paste
paths = _paths_from_mime(source)
if paths:
self.media_added.emit(paths)
return
super().insertFromMimeData(source)
def canInsertFromMimeData(self, source) -> bool: # noqa: N802
if source.hasImage() or source.hasUrls():
return True
return super().canInsertFromMimeData(source)
def dragEnterEvent(self, e) -> None: # noqa: N802
if e.mimeData().hasUrls() or e.mimeData().hasImage():
e.acceptProposedAction()
return
super().dragEnterEvent(e)
def dragMoveEvent(self, e) -> None: # noqa: N802
if e.mimeData().hasUrls() or e.mimeData().hasImage():
e.acceptProposedAction()
return
super().dragMoveEvent(e)
def dropEvent(self, e) -> None: # noqa: N802
paths = _paths_from_mime(e.mimeData())
if paths:
self.media_added.emit(paths)
e.acceptProposedAction()
return
super().dropEvent(e)
class Composer(QWidget):
submitted = Signal(str, list) # (text, attachment paths)
stop_requested = Signal()
queue_changed = Signal(int)
attachments_added = Signal(list) # current attachment paths (pushed to the Input box)
attachment_removed = Signal(str) # a wrongly-added attachment was removed
attach_limit_note = Signal(str) # shown when the attachment-count limit is hit
manage_skills = Signal() # relayed from the /skill popup "Manage skills…"
def __init__(self, placeholder_key: str = "composer.placeholder_default"):
super().__init__()
self._placeholder_key = placeholder_key # i18n key, re-looked-up on language change
self._queue: List[Dict] = [] # each: {"text": str, "attachments": [str]}
self._attachments: List[str] = []
self._max_attachments = 0 # 0 = unlimited; set from Settings
self._busy = False
root = QVBoxLayout(self)
root.setContentsMargins(0, 0, 0, 0)
root.setSpacing(6)
# --- queue strip (hidden when empty) ---
self.queue_box = QWidget()
qlay = QVBoxLayout(self.queue_box)
qlay.setContentsMargins(0, 0, 0, 0)
self.queue_label = QLabel()
self.queue_label.setObjectName("hint")
self.queue_list = QListWidget()
self.queue_list.setMaximumHeight(78)
self.queue_list.itemDoubleClicked.connect(self._remove_queue_item)
qlay.addWidget(self.queue_label)
qlay.addWidget(self.queue_list)
self.queue_box.setVisible(False)
root.addWidget(self.queue_box)
# --- attachments strip (hidden when empty) ---
self.attach_box = QWidget()
alay = QVBoxLayout(self.attach_box)
alay.setContentsMargins(0, 0, 0, 0)
self.attach_label = QLabel()
self.attach_label.setObjectName("hint")
self.attach_list = QListWidget()
# Single horizontal row of chips; scroll sideways when there are many.
self.attach_list.setFlow(QListView.LeftToRight)
self.attach_list.setWrapping(False)
self.attach_list.setHorizontalScrollBarPolicy(Qt.ScrollBarAsNeeded)
self.attach_list.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.attach_list.setFixedHeight(40)
self.attach_list.itemDoubleClicked.connect(self._remove_attachment)
alay.addWidget(self.attach_label)
alay.addWidget(self.attach_list)
self.attach_box.setVisible(False)
root.addWidget(self.attach_box)
# --- input row ---
row = QHBoxLayout()
self.input = _Input()
self.input.setPlaceholderText(tr(self._placeholder_key))
self.input.submit.connect(self._on_submit)
self.input.media_added.connect(self._add_paths)
self.input.manage_skills.connect(self.manage_skills.emit)
row.addWidget(self.input, 1)
btns = QVBoxLayout()
self.attach_btn = QPushButton("")
self.attach_btn.setIcon(icon("attach"))
self.attach_btn.clicked.connect(self._pick_attachments)
self.send_btn = QPushButton()
self.send_btn.setIcon(icon("upload"))
self.send_btn.setObjectName("primary")
self.send_btn.clicked.connect(self._on_submit)
self.stop_btn = QPushButton()
self.stop_btn.setIcon(icon("stop"))
self.stop_btn.setObjectName("danger")
self.stop_btn.setVisible(False)
self.stop_btn.clicked.connect(self.stop_requested.emit)
btns.addWidget(self.attach_btn)
btns.addWidget(self.send_btn)
btns.addWidget(self.stop_btn)
row.addLayout(btns)
root.addLayout(row)
# bottom row: left slot (e.g. Cowork's output-folder picker) — stretch —
# right slot (e.g. Plan/Act toggle, the per-tab Agent combo on Code/Cowork)
self._bottom_left_count = 0
self.extra_row = QHBoxLayout()
self.extra_row.setContentsMargins(0, 0, 0, 0)
self.extra_row.addStretch(1)
root.addLayout(self.extra_row)
on_language_changed(self._retranslate)
def _retranslate(self) -> None:
self.queue_list.setToolTip(tr("composer.queue_tooltip"))
self.attach_list.setToolTip(tr("composer.attachments_tooltip"))
self.attach_btn.setToolTip(tr("composer.attach_btn_tooltip"))
self.send_btn.setText(tr("composer.queue_btn") if self._busy else tr("composer.send"))
self.stop_btn.setText(tr("composer.stop"))
if self.input.toPlainText().strip() == "" and not self._attachments:
self.input.setPlaceholderText(tr(self._placeholder_key))
self._refresh_queue()
self._refresh_attachments()
def add_bottom_right(self, widget) -> None:
self.extra_row.addWidget(widget)
def add_bottom_left(self, widget) -> None:
"""Insert before the stretch, after any previously-added left widget —
so repeated calls read left-to-right in call order, same row as
whatever add_bottom_right widgets (e.g. the Agent combo) sit on the
right of the stretch."""
self.extra_row.insertWidget(self._bottom_left_count, widget)
self._bottom_left_count += 1
# ---- public API --------------------------------------------------
def set_text(self, text: str) -> None:
self.input.setPlainText(text)
self.input.setFocus()
def reset_input(self) -> None:
"""Clear the input + pending attachments and restore the default placeholder
(used on New chat so no stale text or 'Attached: …' hint carries over)."""
self.input.clear()
self._attachments = []
self._refresh_attachments()
self.input.setPlaceholderText(tr(self._placeholder_key))
def set_busy(self, busy: bool) -> None:
"""Capacity gate: when True, new sends are queued (the Send button reads
'Queue'). Independent of whether any turn is running — see set_running."""
self._busy = busy
self.send_btn.setText(tr("composer.queue_btn") if busy else tr("composer.send"))
def set_running(self, running: bool) -> None:
"""Show the Stop button whenever at least one turn is running (may be True
even when not at capacity, so a single in-flight message can be stopped)."""
self.stop_btn.setVisible(running)
def has_queue(self) -> bool:
return bool(self._queue)
def pop_next(self) -> Dict | None:
if not self._queue:
return None
item = self._queue.pop(0)
self._refresh_queue()
return item
def clear_queue(self) -> None:
self._queue.clear()
self._refresh_queue()
def enqueue(self, text: str, attachments: List[str] | None = None) -> None:
self._queue.append({"text": text, "attachments": list(attachments or [])})
self._refresh_queue()
# ---- attachments -------------------------------------------------
def set_max_attachments(self, n: int) -> None:
self._max_attachments = max(0, int(n or 0))
def _add_one(self, path: str) -> bool:
"""Add a file unless it's a duplicate or the count limit is reached.
Returns False (and notifies) when the limit blocked it."""
if not path or path in self._attachments:
return True
if self._max_attachments and len(self._attachments) >= self._max_attachments:
self.attach_limit_note.emit(tr("chatpanel.attach_limit", n=self._max_attachments))
return False
self._attachments.append(path)
return True
def _pick_attachments(self) -> None:
files, _ = QFileDialog.getOpenFileNames(
self, tr("composer.attach_dialog_title"), "",
tr("composer.attach_dialog_filter"),
)
for f in files:
if not self._add_one(f):
break
self._refresh_attachments()
def _add_paths(self, paths: List[str]) -> None:
"""Add attachments from paste / drag-drop."""
for p in paths:
if not self._add_one(p):
break
self._refresh_attachments()
if paths:
names = ", ".join(Path(p).name for p in paths)
self.input.setPlaceholderText(tr("chatpanel.attached_hint", names=names))
def _remove_attachment(self, item: QListWidgetItem) -> None:
idx = self.attach_list.row(item)
if 0 <= idx < len(self._attachments):
self._remove_attachment_path(self._attachments[idx])
def _remove_attachment_path(self, path: str) -> None:
"""Remove one wrongly-added file (✕ button or double-click)."""
if path in self._attachments:
self._attachments.remove(path)
self._refresh_attachments()
self.attachment_removed.emit(path) # also drop it from the Input panel
def _refresh_attachments(self) -> None:
self.attach_list.clear()
for p in self._attachments:
item = QListWidgetItem()
row = QWidget()
_cp = current_palette()
row.setStyleSheet(
f"background: {_cp.surface_raised}; border: 1px solid {_cp.border};"
f" border-radius: {_cp.radius_sm}px;")
h = QHBoxLayout(row)
h.setContentsMargins(8, 2, 4, 2)
h.setSpacing(4)
short = Path(p).name
if len(short) > 22:
short = short[:19] + "…"
name = IconLabel("attach", short, size=13)
name.setToolTip(p)
remove = QPushButton()
remove.setIcon(icon("close", size=12))
remove.setObjectName("danger")
remove.setFixedSize(18, 18)
remove.setToolTip(tr("composer.remove_tooltip"))
remove.setCursor(Qt.PointingHandCursor)
remove.clicked.connect(lambda _=False, path=p: self._remove_attachment_path(path))
h.addWidget(name) # compact chip (no stretch → many fit in one row)
h.addWidget(remove)
item.setSizeHint(row.sizeHint())
self.attach_list.addItem(item)
self.attach_list.setItemWidget(item, row)
self.attach_label.setText(tr("composer.attachments_label", n=len(self._attachments)))
self.attach_box.setVisible(bool(self._attachments))
if self._attachments:
self.attachments_added.emit(list(self._attachments))
# ---- submit / queue ----------------------------------------------
def _on_submit(self) -> None:
text = self.input.toPlainText().strip()
attachments = list(self._attachments)
if not text and not attachments:
return
self.input.clear()
self._attachments = []
self._refresh_attachments()
self.input.setPlaceholderText(tr(self._placeholder_key)) # clear any "Attached: …" hint
# A local /skill or /agent list/select command is answered inline instantly
# — run it now even while a turn is busy (don't bury it in the queue).
if self._busy and not (_is_local_skill_command(text) or _is_local_agent_command(text)):
self._queue.append({"text": text, "attachments": attachments})
self._refresh_queue()
else:
self.submitted.emit(text, attachments)
def _remove_queue_item(self, item: QListWidgetItem) -> None:
idx = self.queue_list.row(item)
if 0 <= idx < len(self._queue):
self._queue.pop(idx)
self._refresh_queue()
def _refresh_queue(self) -> None:
self.queue_list.clear()
for i, entry in enumerate(self._queue, 1):
text = entry.get("text", "")
n = len(entry.get("attachments", []))
preview = text if len(text) <= 70 else text[:70] + "…"
if n:
preview += f" (+{n})"
self.queue_list.addItem(f"{i}. {preview}")
self.queue_label.setText(tr("composer.queue_label", n=len(self._queue)))
self.queue_box.setVisible(bool(self._queue))
self.queue_changed.emit(len(self._queue))