Comfyui-JSON-Manager/tab_batch_ng.py

import copy
import random
from pathlib import Path

from nicegui import ui

from state import AppState
from utils import (
    DEFAULTS, save_json, load_json,
    KEY_BATCH_DATA, KEY_HISTORY_TREE, KEY_PROMPT_HISTORY, KEY_SEQUENCE_NUMBER,
)
from history_tree import HistoryTree

IMAGE_EXTENSIONS = {'.png', '.jpg', '.jpeg', '.webp', '.bmp', '.gif'}
SUB_SEGMENT_MULTIPLIER = 1000

VACE_MODES = [
    'End Extend', 'Pre Extend', 'Middle Extend', 'Edge Extend',
    'Join Extend', 'Bidirectional Extend', 'Frame Interpolation',
    'Replace/Inpaint', 'Video Inpaint', 'Keyframe',
]
VACE_FORMULAS = [
    'base + A', 'base + B', 'base + A + B', 'base + A + B',
    'base + A + B', 'base + A + B', '(B-1) * step',
    'snap(source)', 'snap(source)', 'base + A + B',
]


# --- Sub-segment helpers (same as original) ---

def is_subsegment(seq_num):
    return int(seq_num) >= SUB_SEGMENT_MULTIPLIER

def parent_of(seq_num):
    seq_num = int(seq_num)
    return seq_num // SUB_SEGMENT_MULTIPLIER if is_subsegment(seq_num) else seq_num

def sub_index_of(seq_num):
    seq_num = int(seq_num)
    return seq_num % SUB_SEGMENT_MULTIPLIER if is_subsegment(seq_num) else 0

def format_seq_label(seq_num):
    seq_num = int(seq_num)
    if is_subsegment(seq_num):
        return f'Sub #{parent_of(seq_num)}.{sub_index_of(seq_num)}'
    return f'Sequence #{seq_num}'

def next_sub_segment_number(batch_list, parent_seq_num):
    parent_seq_num = int(parent_seq_num)
    max_sub = 0
    for s in batch_list:
        sn = int(s.get(KEY_SEQUENCE_NUMBER, 0))
        if is_subsegment(sn) and parent_of(sn) == parent_seq_num:
            max_sub = max(max_sub, sub_index_of(sn))
    return parent_seq_num * SUB_SEGMENT_MULTIPLIER + max_sub + 1

def find_insert_position(batch_list, parent_index, parent_seq_num):
    parent_seq_num = int(parent_seq_num)
    pos = parent_index + 1
    while pos < len(batch_list):
        sn = int(batch_list[pos].get(KEY_SEQUENCE_NUMBER, 0))
        if is_subsegment(sn) and parent_of(sn) == parent_seq_num:
            pos += 1
        else:
            break
    return pos


# --- Helper for repetitive dict-bound inputs ---

def dict_input(element_fn, label, seq, key, **kwargs):
    """Create an input element bound to seq[key] via blur event."""
    val = seq.get(key, '')
    if isinstance(val, (int, float)):
        val = str(val) if element_fn != ui.number else val
    el = element_fn(label, value=val, **kwargs)
    el.on('blur', lambda e, k=key: seq.__setitem__(k, e.sender.value))
    return el


def dict_number(label, seq, key, **kwargs):
    """Number input bound to seq[key] via blur."""
    val = seq.get(key, 0)
    try:
        # Try float first to handle "1.5" strings, then check if it's a clean int
        fval = float(val)
        val = int(fval) if fval == int(fval) else fval
    except (ValueError, TypeError):
        val = 0
    el = ui.number(label, value=val, **kwargs)
    el.on('blur', lambda e, k=key: seq.__setitem__(
        k, e.sender.value if e.sender.value is not None else 0))
    return el


def dict_textarea(label, seq, key, **kwargs):
    """Textarea bound to seq[key] via blur."""
    el = ui.textarea(label, value=seq.get(key, ''), **kwargs)
    el.on('blur', lambda e, k=key: seq.__setitem__(k, e.sender.value))
    return el


# ======================================================================
# Main render function
# ======================================================================

def render_batch_processor(state: AppState):
    data = state.data_cache
    file_path = state.file_path
    is_batch_file = KEY_BATCH_DATA in data or isinstance(data, list)

    if not is_batch_file:
        ui.label('This is a Single file. To use Batch mode, create a copy.').classes(
            'text-warning')

        def create_batch():
            new_name = f'batch_{file_path.name}'
            new_path = file_path.parent / new_name
            if new_path.exists():
                ui.notify(f'File {new_name} already exists!', type='warning')
                return
            first_item = copy.deepcopy(data)
            first_item.pop(KEY_PROMPT_HISTORY, None)
            first_item.pop(KEY_HISTORY_TREE, None)
            first_item[KEY_SEQUENCE_NUMBER] = 1
            new_data = {KEY_BATCH_DATA: [first_item], KEY_HISTORY_TREE: {},
                        KEY_PROMPT_HISTORY: []}
            save_json(new_path, new_data)
            ui.notify(f'Created {new_name}', type='positive')

        ui.button('Create Batch Copy', icon='content_copy', on_click=create_batch)
        return

    if state.restored_indicator:
        ui.label(f'Editing Restored Version: {state.restored_indicator}').classes(
            'text-info q-pa-sm')

    batch_list = data.get(KEY_BATCH_DATA, [])

    # Source file data for importing
    json_files = sorted(state.current_dir.glob('*.json'))
    json_files = [f for f in json_files if f.name not in (
        '.editor_config.json', '.editor_snippets.json')]
    file_options = {f.name: f.name for f in json_files}

    src_file_select = ui.select(
        file_options,
        value=file_path.name,
        label='Source File:',
    ).classes('w-64')

    src_seq_select = ui.select([], label='Source Sequence:').classes('w-64')

    # Track loaded source data
    _src_cache = {'data': None, 'batch': [], 'name': None}

    def _update_src():
        name = src_file_select.value
        if name and name != _src_cache['name']:
            src_data, _ = load_json(state.current_dir / name)
            _src_cache['data'] = src_data
            _src_cache['batch'] = src_data.get(KEY_BATCH_DATA, [])
            _src_cache['name'] = name
            if _src_cache['batch']:
                opts = {i: format_seq_label(s.get(KEY_SEQUENCE_NUMBER, i+1))
                        for i, s in enumerate(_src_cache['batch'])}
                src_seq_select.set_options(opts, value=0)
            else:
                src_seq_select.set_options({})

    src_file_select.on_value_change(lambda _: _update_src())
    _update_src()

    # --- Add New Sequence ---
    ui.label('Add New Sequence').classes('text-subtitle1 q-mt-md')

    def _add_sequence(new_item):
        max_seq = 0
        for s in batch_list:
            sn = int(s.get(KEY_SEQUENCE_NUMBER, 0))
            if not is_subsegment(sn):
                max_seq = max(max_seq, sn)
        new_item[KEY_SEQUENCE_NUMBER] = max_seq + 1
        for k in [KEY_PROMPT_HISTORY, KEY_HISTORY_TREE, 'note', 'loras']:
            new_item.pop(k, None)
        batch_list.append(new_item)
        data[KEY_BATCH_DATA] = batch_list
        save_json(file_path, data)
        render_sequence_list.refresh()

    with ui.row():
        def add_empty():
            _add_sequence(DEFAULTS.copy())

        def add_from_source():
            item = copy.deepcopy(DEFAULTS)
            src_batch = _src_cache['batch']
            sel_idx = src_seq_select.value
            if src_batch and sel_idx is not None:
                item.update(copy.deepcopy(src_batch[int(sel_idx)]))
            elif _src_cache['data']:
                item.update(copy.deepcopy(_src_cache['data']))
            _add_sequence(item)

        ui.button('Add Empty', icon='add', on_click=add_empty)
        ui.button('From Source', icon='file_download', on_click=add_from_source)

    ui.separator()

    # --- Standard / LoRA / VACE key sets ---
    lora_keys = ['lora 1 high', 'lora 1 low', 'lora 2 high', 'lora 2 low',
                 'lora 3 high', 'lora 3 low']
    standard_keys = {
        'general_prompt', 'general_negative', 'current_prompt', 'negative', 'prompt',
        'seed', 'cfg', 'camera', 'flf', KEY_SEQUENCE_NUMBER,
        'frame_to_skip', 'end_frame', 'transition', 'vace_length',
        'input_a_frames', 'input_b_frames', 'reference switch', 'vace schedule',
        'reference path', 'video file path', 'reference image path', 'flf image path',
    }
    standard_keys.update(lora_keys)

    def sort_by_number():
        batch_list.sort(key=lambda s: int(s.get(KEY_SEQUENCE_NUMBER, 0)))
        data[KEY_BATCH_DATA] = batch_list
        save_json(file_path, data)
        ui.notify('Sorted by sequence number!', type='positive')
        render_sequence_list.refresh()

    # --- Sequence list + mass update (inside refreshable so they stay in sync) ---
    @ui.refreshable
    def render_sequence_list():
        # Mass update (rebuilt on refresh so checkboxes match current sequences)
        _render_mass_update(batch_list, data, file_path, state)

        with ui.row().classes('w-full items-center'):
            ui.label(f'Batch contains {len(batch_list)} sequences.')
            ui.button('Sort by Number', icon='sort', on_click=sort_by_number).props('flat')

        for i, seq in enumerate(batch_list):
            _render_sequence_card(
                i, seq, batch_list, data, file_path, state,
                _src_cache, src_seq_select,
                standard_keys, render_sequence_list,
            )

    render_sequence_list()

    ui.separator()

    # --- Save & Snap ---
    with ui.row().classes('w-full items-end q-gutter-md'):
        commit_input = ui.input('Change Note (Optional)',
                                placeholder='e.g. Added sequence 3').classes('col')

        def save_and_snap():
            data[KEY_BATCH_DATA] = batch_list
            tree_data = data.get(KEY_HISTORY_TREE, {})
            htree = HistoryTree(tree_data)
            snapshot_payload = copy.deepcopy(data)
            snapshot_payload.pop(KEY_HISTORY_TREE, None)
            note = commit_input.value if commit_input.value else 'Batch Update'
            htree.commit(snapshot_payload, note=note)
            data[KEY_HISTORY_TREE] = htree.to_dict()
            save_json(file_path, data)
            state.restored_indicator = None
            commit_input.set_value('')
            ui.notify('Batch Saved & Snapshot Created!', type='positive')

        ui.button('Save & Snap', icon='save', on_click=save_and_snap).props('color=primary')


# ======================================================================
# Single sequence card
# ======================================================================

def _render_sequence_card(i, seq, batch_list, data, file_path, state,
                          src_cache, src_seq_select, standard_keys,
                          refresh_list):
    seq_num = seq.get(KEY_SEQUENCE_NUMBER, i + 1)

    if is_subsegment(seq_num):
        label = f'Sub #{parent_of(seq_num)}.{sub_index_of(seq_num)}  ({int(seq_num)})'
    else:
        label = f'Sequence #{seq_num}'

    with ui.expansion(label, icon='movie').classes('w-full'):
        # --- Action row ---
        with ui.row().classes('w-full q-gutter-sm action-row'):
            # Copy from source
            def copy_source(idx=i, sn=seq_num):
                item = copy.deepcopy(DEFAULTS)
                src_batch = src_cache['batch']
                sel_idx = src_seq_select.value
                if src_batch and sel_idx is not None:
                    item.update(copy.deepcopy(src_batch[int(sel_idx)]))
                elif src_cache['data']:
                    item.update(copy.deepcopy(src_cache['data']))
                item[KEY_SEQUENCE_NUMBER] = sn
                item.pop(KEY_PROMPT_HISTORY, None)
                item.pop(KEY_HISTORY_TREE, None)
                batch_list[idx] = item
                data[KEY_BATCH_DATA] = batch_list
                save_json(file_path, data)
                ui.notify('Copied!', type='positive')
                refresh_list.refresh()

            ui.button('Copy Src', icon='file_download', on_click=copy_source).props('dense')

            # Clone Next
            def clone_next(idx=i, sn=seq_num, s=seq):
                new_seq = copy.deepcopy(s)
                max_sn = max(
                    (int(x.get(KEY_SEQUENCE_NUMBER, 0))
                     for x in batch_list if not is_subsegment(x.get(KEY_SEQUENCE_NUMBER, 0))),
                    default=0)
                new_seq[KEY_SEQUENCE_NUMBER] = max_sn + 1
                if not is_subsegment(sn):
                    pos = find_insert_position(batch_list, idx, int(sn))
                else:
                    pos = idx + 1
                batch_list.insert(pos, new_seq)
                data[KEY_BATCH_DATA] = batch_list
                save_json(file_path, data)
                ui.notify('Cloned to Next!', type='positive')
                refresh_list.refresh()

            ui.button('Clone Next', icon='content_copy', on_click=clone_next).props('dense')

            # Clone End
            def clone_end(s=seq):
                new_seq = copy.deepcopy(s)
                max_sn = max(
                    (int(x.get(KEY_SEQUENCE_NUMBER, 0))
                     for x in batch_list if not is_subsegment(x.get(KEY_SEQUENCE_NUMBER, 0))),
                    default=0)
                new_seq[KEY_SEQUENCE_NUMBER] = max_sn + 1
                batch_list.append(new_seq)
                data[KEY_BATCH_DATA] = batch_list
                save_json(file_path, data)
                ui.notify('Cloned to End!', type='positive')
                refresh_list.refresh()

            ui.button('Clone End', icon='vertical_align_bottom', on_click=clone_end).props('dense')

            # Clone Sub
            def clone_sub(idx=i, sn=seq_num, s=seq):
                new_seq = copy.deepcopy(s)
                p_seq = parent_of(sn)
                p_idx = idx
                if is_subsegment(sn):
                    for pi, ps in enumerate(batch_list):
                        if int(ps.get(KEY_SEQUENCE_NUMBER, 0)) == p_seq:
                            p_idx = pi
                            break
                new_seq[KEY_SEQUENCE_NUMBER] = next_sub_segment_number(batch_list, p_seq)
                pos = find_insert_position(batch_list, p_idx, p_seq)
                batch_list.insert(pos, new_seq)
                data[KEY_BATCH_DATA] = batch_list
                save_json(file_path, data)
                ui.notify(f'Created {format_seq_label(new_seq[KEY_SEQUENCE_NUMBER])}!',
                          type='positive')
                refresh_list.refresh()

            ui.button('Clone Sub', icon='link', on_click=clone_sub).props('dense')

            # Promote
            def promote(idx=i, s=seq):
                single_data = copy.deepcopy(s)
                single_data[KEY_PROMPT_HISTORY] = copy.deepcopy(data.get(KEY_PROMPT_HISTORY, []))
                single_data[KEY_HISTORY_TREE] = copy.deepcopy(data.get(KEY_HISTORY_TREE, {}))
                single_data.pop(KEY_SEQUENCE_NUMBER, None)
                save_json(file_path, single_data)
                state.data_cache = single_data
                ui.notify('Converted to Single!', type='positive')
                # Full refresh so batch tab re-enters render_batch_processor
                # and sees the file is now single (no KEY_BATCH_DATA)
                state._render_main.refresh()

            ui.button('Promote', icon='north_west', on_click=promote).props('dense')

            # Delete
            def delete(idx=i):
                batch_list.pop(idx)
                data[KEY_BATCH_DATA] = batch_list
                save_json(file_path, data)
                refresh_list.refresh()

            ui.button(icon='delete', on_click=delete).props('dense color=negative')

        ui.separator()

        # --- Prompts + Settings (2-column like Streamlit) ---
        with ui.splitter(value=66).classes('w-full') as splitter:
            with splitter.before:
                dict_textarea('General Prompt', seq, 'general_prompt').classes(
                    'w-full').props('outlined rows=2')
                dict_textarea('General Negative', seq, 'general_negative').classes(
                    'w-full').props('outlined rows=2')
                dict_textarea('Specific Prompt', seq, 'current_prompt').classes(
                    'w-full').props('outlined rows=10')
                dict_textarea('Specific Negative', seq, 'negative').classes(
                    'w-full').props('outlined rows=2')

            with splitter.after:
                # Sequence number
                sn_label = (
                    f'Seq Number (Sub #{parent_of(seq_num)}.{sub_index_of(seq_num)})'
                    if is_subsegment(seq_num) else 'Sequence Number'
                )
                sn_input = dict_number(sn_label, seq, KEY_SEQUENCE_NUMBER)
                sn_input.props('outlined').classes('w-full')

                # Seed + randomize
                with ui.row().classes('w-full items-end'):
                    seed_input = dict_number('Seed', seq, 'seed').classes('col').props('outlined')

                    def randomize_seed(si=seed_input, s=seq):
                        new_seed = random.randint(0, 999999999999)
                        si.set_value(new_seed)
                        s['seed'] = new_seed

                    ui.button(icon='casino', on_click=randomize_seed).props('flat')

                # CFG
                cfg_val = float(seq.get('cfg', DEFAULTS['cfg']))
                cfg_input = ui.number('CFG', value=cfg_val, step=0.5,
                                      format='%.1f').props('outlined').classes('w-full')
                cfg_input.on('blur', lambda e: seq.__setitem__(
                    'cfg', e.sender.value if e.sender.value is not None else DEFAULTS['cfg']))

                dict_input(ui.input, 'Camera', seq, 'camera').props('outlined').classes('w-full')
                dict_input(ui.input, 'FLF', seq, 'flf').props('outlined').classes('w-full')
                dict_number('End Frame', seq, 'end_frame').props('outlined').classes('w-full')
                dict_input(ui.input, 'Video File Path', seq, 'video file path').props(
                    'outlined').classes('w-full')

                # Image paths with preview
                for img_label, img_key in [
                    ('Reference Image Path', 'reference image path'),
                    ('Reference Path', 'reference path'),
                    ('FLF Image Path', 'flf image path'),
                ]:
                    with ui.row().classes('w-full items-center'):
                        inp = dict_input(ui.input, img_label, seq, img_key).classes(
                            'col').props('outlined')
                        img_path = Path(seq.get(img_key, '')) if seq.get(img_key) else None
                        if (img_path and img_path.exists() and
                                img_path.suffix.lower() in IMAGE_EXTENSIONS):
                            with ui.dialog() as dlg, ui.card():
                                ui.image(str(img_path)).classes('w-full')
                            ui.button(icon='visibility', on_click=dlg.open).props('flat dense')

                # VACE Settings
                with ui.expansion('VACE Settings', icon='settings').classes('w-full'):
                    _render_vace_settings(i, seq, batch_list, data, file_path, refresh_list)

        # --- LoRA Settings ---
        with ui.expansion('LoRA Settings', icon='style').classes('w-full'):
            with ui.row().classes('w-full q-gutter-md'):
                for lora_idx in range(1, 4):
                    with ui.column().classes('col'):
                        ui.label(f'LoRA {lora_idx}').classes('text-subtitle2')
                        for tier, tier_label in [('high', 'High'), ('low', 'Low')]:
                            k = f'lora {lora_idx} {tier}'
                            raw = str(seq.get(k, ''))
                            disp = raw.replace('<lora:', '').replace('>', '')

                            with ui.row().classes('w-full items-center'):
                                ui.label('<lora:').classes('text-caption font-mono')
                                lora_input = ui.input(
                                    f'L{lora_idx} {tier_label}',
                                    value=disp,
                                ).classes('col').props('outlined dense')
                                ui.label('>').classes('text-caption font-mono')

                                def on_lora_blur(e, key=k):
                                    v = e.sender.value
                                    seq[key] = f'<lora:{v}>' if v else ''

                                lora_input.on('blur', on_lora_blur)

        # --- Custom Parameters ---
        ui.separator()
        ui.label('Custom Parameters').classes('text-caption')

        custom_keys = [k for k in seq.keys() if k not in standard_keys]
        if custom_keys:
            for k in custom_keys:
                with ui.row().classes('w-full items-center'):
                    ui.input('Key', value=k).props('readonly outlined dense').classes('w-32')
                    val_input = ui.input('Value', value=str(seq[k])).props(
                        'outlined dense').classes('col')
                    val_input.on('blur', lambda e, key=k: seq.__setitem__(key, e.sender.value))

                    def del_custom(key=k):
                        del seq[key]
                        save_json(file_path, data)
                        refresh_list.refresh()

                    ui.button(icon='delete', on_click=del_custom).props('flat dense color=negative')

        with ui.expansion('Add Parameter', icon='add').classes('w-full'):
            new_k_input = ui.input('Key').props('outlined dense')
            new_v_input = ui.input('Value').props('outlined dense')

            def add_param():
                k = new_k_input.value
                v = new_v_input.value
                if k and k not in seq:
                    seq[k] = v
                    save_json(file_path, data)
                    new_k_input.set_value('')
                    new_v_input.set_value('')
                    refresh_list.refresh()

            ui.button('Add', on_click=add_param).props('flat')


# ======================================================================
# VACE Settings sub-section
# ======================================================================

def _render_vace_settings(i, seq, batch_list, data, file_path, refresh_list):
    # Frame to Skip + shift
    with ui.row().classes('w-full items-end'):
        fts_input = dict_number('Frame to Skip', seq, 'frame_to_skip').classes('col').props(
            'outlined')

        # Capture original at render time; blur updates seq before click fires
        _original_fts = int(seq.get('frame_to_skip', 81))

        def shift_fts(idx=i, orig=_original_fts):
            new_fts = int(fts_input.value) if fts_input.value is not None else orig
            delta = new_fts - orig
            if delta == 0:
                ui.notify('No change to shift', type='info')
                return
            shifted = 0
            for j in range(idx + 1, len(batch_list)):
                batch_list[j]['frame_to_skip'] = int(
                    batch_list[j].get('frame_to_skip', 81)) + delta
                shifted += 1
            data[KEY_BATCH_DATA] = batch_list
            save_json(file_path, data)
            ui.notify(f'Shifted {shifted} sequences by {delta:+d}', type='positive')
            refresh_list.refresh()

        ui.button('Shift', icon='arrow_downward', on_click=shift_fts).props('dense')

    dict_input(ui.input, 'Transition', seq, 'transition').props('outlined')

    # VACE Schedule
    sched_val = max(0, min(int(seq.get('vace schedule', 1)), len(VACE_MODES) - 1))
    with ui.row().classes('w-full items-center'):
        vs_input = ui.number('VACE Schedule', value=sched_val, min=0,
                             max=len(VACE_MODES) - 1).classes('col').props('outlined')
        vs_input.on('blur', lambda e: seq.__setitem__(
            'vace schedule', int(e.sender.value) if e.sender.value is not None else 0))
        mode_label = ui.label(VACE_MODES[sched_val]).classes('text-caption')

        def update_mode_label(e):
            idx = int(e.sender.value) if e.sender.value is not None else 0
            idx = max(0, min(idx, len(VACE_MODES) - 1))
            mode_label.set_text(VACE_MODES[idx])

        vs_input.on('update:model-value', update_mode_label)

    # Mode reference
    with ui.dialog() as ref_dlg, ui.card():
        table_md = (
            '| # | Mode | Formula |\n|:--|:-----|:--------|\n'
            + '\n'.join(
                f'| **{j}** | {VACE_MODES[j]} | `{VACE_FORMULAS[j]}` |'
                for j in range(len(VACE_MODES)))
            + '\n\n*All totals snapped to 4n+1 (1,5,9,...,49,...,81,...)*'
        )
        ui.markdown(table_md)
    ui.button('Mode Reference', icon='help', on_click=ref_dlg.open).props('flat dense')

    # Input A / B frames
    ia_input = dict_number('Input A Frames', seq, 'input_a_frames').props('outlined')
    ib_input = dict_number('Input B Frames', seq, 'input_b_frames').props('outlined')

    # VACE Length + output calculation
    input_a = int(seq.get('input_a_frames', 16))
    input_b = int(seq.get('input_b_frames', 16))
    stored_total = int(seq.get('vace_length', 49))
    mode_idx = int(seq.get('vace schedule', 1))

    if mode_idx == 0:
        base_length = max(stored_total - input_a, 1)
    elif mode_idx == 1:
        base_length = max(stored_total - input_b, 1)
    else:
        base_length = max(stored_total - input_a - input_b, 1)

    with ui.row().classes('w-full items-center'):
        vl_input = ui.number('VACE Length', value=base_length, min=1).classes('col').props(
            'outlined')
        output_label = ui.label(f'Output: {stored_total}').classes('text-bold')

    def recalc_vace(*_args):
        mi = int(vs_input.value) if vs_input.value is not None else 0
        ia = int(ia_input.value) if ia_input.value is not None else 16
        ib = int(ib_input.value) if ib_input.value is not None else 16
        nb = int(vl_input.value) if vl_input.value is not None else 1

        if mi == 0:
            raw = nb + ia
        elif mi == 1:
            raw = nb + ib
        else:
            raw = nb + ia + ib

        snapped = ((raw + 2) // 4) * 4 + 1
        seq['vace_length'] = snapped
        output_label.set_text(f'Output: {snapped}')

    for inp in (vs_input, ia_input, ib_input, vl_input):
        inp.on('update:model-value', recalc_vace)

    dict_number('Reference Switch', seq, 'reference switch').props('outlined')


# ======================================================================
# Mass Update
# ======================================================================

def _render_mass_update(batch_list, data, file_path, state: AppState):
    with ui.expansion('Mass Update', icon='sync').classes('w-full'):
        if len(batch_list) < 2:
            ui.label('Need at least 2 sequences for mass update.').classes('text-caption')
            return

        source_options = {i: format_seq_label(s.get(KEY_SEQUENCE_NUMBER, i+1))
                         for i, s in enumerate(batch_list)}
        source_select = ui.select(source_options, value=0,
                                  label='Copy from sequence:').classes('w-full')

        field_select = ui.select([], multiple=True,
                                 label='Fields to copy:').classes('w-full')

        def update_fields(_=None):
            idx = source_select.value
            if idx is not None and 0 <= idx < len(batch_list):
                src = batch_list[idx]
                keys = [k for k in src.keys() if k != 'sequence_number']
                field_select.set_options(keys)

        source_select.on_value_change(update_fields)
        update_fields()

        ui.label('Apply to:').classes('text-subtitle2 q-mt-md')
        select_all_cb = ui.checkbox('Select All')
        target_checks = {}
        for idx, s in enumerate(batch_list):
            sn = s.get(KEY_SEQUENCE_NUMBER, idx + 1)
            cb = ui.checkbox(format_seq_label(sn))
            target_checks[idx] = cb

        def on_select_all(e):
            for cb in target_checks.values():
                cb.set_value(e.value)

        select_all_cb.on_value_change(on_select_all)

        def apply_mass_update():
            src_idx = source_select.value
            if src_idx is None or src_idx >= len(batch_list):
                ui.notify('Source sequence no longer exists', type='warning')
                return
            selected_keys = field_select.value or []
            if not selected_keys:
                ui.notify('No fields selected', type='warning')
                return

            source_seq = batch_list[src_idx]
            targets = [idx for idx, cb in target_checks.items()
                       if cb.value and idx != src_idx and idx < len(batch_list)]
            if not targets:
                ui.notify('No target sequences selected', type='warning')
                return

            for idx in targets:
                for key in selected_keys:
                    batch_list[idx][key] = copy.deepcopy(source_seq.get(key))

            data[KEY_BATCH_DATA] = batch_list
            htree = HistoryTree(data.get(KEY_HISTORY_TREE, {}))
            snapshot = copy.deepcopy(data)
            snapshot.pop(KEY_HISTORY_TREE, None)
            htree.commit(snapshot, f"Mass update: {', '.join(selected_keys)}")
            data[KEY_HISTORY_TREE] = htree.to_dict()
            save_json(file_path, data)
            ui.notify(f'Updated {len(targets)} sequences', type='positive')

        ui.button('Apply Changes', icon='check', on_click=apply_mass_update).props(
            'color=primary')