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openchamber/packages/ui/src/components/chat/DraftPresetChips.tsx
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TypeScript

import React from 'react';
import {
DndContext,
MouseSensor,
TouchSensor,
useSensor,
useSensors,
useDroppable,
closestCenter,
MeasuringStrategy,
type DragEndEvent,
} from '@dnd-kit/core';
import { SortableContext, useSortable, rectSortingStrategy } from '@dnd-kit/sortable';
import { CSS } from '@dnd-kit/utilities';
import { Icon } from '@/components/icon/Icon';
import {
Command,
CommandInput,
CommandList,
CommandEmpty,
CommandGroup,
CommandItem,
} from '@/components/ui/command';
import {
Dialog,
DialogTrigger,
DialogContent,
DialogHeader,
DialogTitle,
} from '@/components/ui/dialog';
import { useI18n } from '@/lib/i18n';
import { useThemeSystem } from '@/contexts/useThemeSystem';
import { useDeviceInfo } from '@/lib/device';
import { cn } from '@/lib/utils';
import { useUIStore } from '@/stores/useUIStore';
import {
useDraftStarters,
type ResolvedStarter,
type PinnableItem,
type PinnableSection,
} from './useDraftStarters';
type DraftPresetChipsProps = {
/** Called with the resolved starter invocation when a chip is clicked. */
onSubmit: (starter: ResolvedStarter) => void;
/** Extra classes for the wrapper (e.g. width/spacing per surface). */
className?: string;
};
// Droppable id for the mobile "drag a chip here to delete" target. Kept distinct
// from any chip id (which are `group:type:name`) so collisions never alias.
const TRASH_DROPPABLE_ID = '__draft-starter-trash__';
// Shared box for the round icon buttons in the "+" slot (add picker and the
// mobile trash drop-zone). Identical so swapping one for the other never shifts
// layout or changes the circle size. shrink-0 keeps it from being compressed by
// the wrapping flex row.
const ROUND_ICON_BUTTON_CLASS =
'inline-flex h-7 w-7 shrink-0 items-center justify-center rounded-full border transition-colors';
const PICKER_SECTIONS: { key: PinnableSection; headingKey: 'chat.draftStarters.sectionBuiltIn' | 'chat.draftStarters.sectionCommands' | 'chat.draftStarters.sectionSkills' }[] = [
{ key: 'built-in', headingKey: 'chat.draftStarters.sectionBuiltIn' },
{ key: 'command', headingKey: 'chat.draftStarters.sectionCommands' },
{ key: 'skill', headingKey: 'chat.draftStarters.sectionSkills' },
];
const SortableChip: React.FC<{
item: ResolvedStarter;
onSubmit: (starter: ResolvedStarter) => void;
onRemove: () => void;
/** Hide the per-chip hover "x" (mobile uses the trash drop-zone instead). */
hideRemove?: boolean;
}> = ({ item, onSubmit, onRemove, hideRemove }) => {
const { t } = useI18n();
const { currentTheme } = useThemeSystem();
const { attributes, listeners, setNodeRef, transform, transition, isDragging } = useSortable({ id: item.id });
const chipStyle: React.CSSProperties = {
backgroundColor: currentTheme?.colors?.surface?.elevated,
borderColor: currentTheme?.colors?.interactive?.border,
};
return (
<div
ref={setNodeRef}
// Translate only (no scaleX/scaleY) so the lifted chip keeps its own
// width instead of stretching to the target slot.
style={{ transform: CSS.Translate.toString(transform), transition }}
className={cn('group/chip relative', isDragging && 'z-10 opacity-60')}
>
<button
type="button"
{...attributes}
{...listeners}
onClick={() => onSubmit(item)}
className="group inline-flex touch-none select-none items-center gap-1.5 rounded-full border px-3 py-1.5 text-sm text-muted-foreground transition-colors hover:bg-[var(--interactive-hover)] hover:text-foreground"
style={chipStyle}
>
<Icon name={item.icon} className="h-3.5 w-3.5 shrink-0 opacity-70 transition-opacity group-hover:opacity-100" />
<span className="whitespace-nowrap">{item.label}</span>
</button>
{hideRemove ? null : (
<button
type="button"
onClick={(e) => { e.stopPropagation(); onRemove(); }}
aria-label={t('chat.draftStarters.remove')}
title={t('chat.draftStarters.remove')}
className="absolute -right-1.5 -top-1.5 hidden h-4 w-4 items-center justify-center rounded-full border text-muted-foreground shadow-sm hover:text-foreground group-hover/chip:flex"
style={chipStyle}
>
<Icon name="close" className="h-2.5 w-2.5" />
</button>
)}
</div>
);
};
const StarterGroup: React.FC<{
items: ResolvedStarter[];
onSubmit: (starter: ResolvedStarter) => void;
onRemove: (item: ResolvedStarter) => void;
hideRemove?: boolean;
}> = ({ items, onSubmit, onRemove, hideRemove }) => (
<SortableContext items={items.map((i) => i.id)} strategy={rectSortingStrategy}>
{items.map((item) => (
<SortableChip
key={item.id}
item={item}
onSubmit={onSubmit}
onRemove={() => onRemove(item)}
hideRemove={hideRemove}
/>
))}
</SortableContext>
);
/**
* Mobile delete target. Sits in the "+" slot and is only mounted while a chip is
* being dragged; dropping a chip on it removes that starter. Styled to match the
* add ("+") button so the swap reads as the same affordance toggling purpose.
*/
const TrashDropZone: React.FC = () => {
const { t } = useI18n();
const { currentTheme } = useThemeSystem();
const { setNodeRef, isOver } = useDroppable({ id: TRASH_DROPPABLE_ID });
return (
<button
type="button"
ref={setNodeRef}
aria-label={t('chat.draftStarters.remove')}
title={t('chat.draftStarters.remove')}
// Same box as the "+" button so the swap never shifts layout; on-hover
// feedback is color-only (no resize).
className={cn(
ROUND_ICON_BUTTON_CLASS,
isOver ? 'border-destructive text-destructive' : 'text-muted-foreground',
)}
style={{
backgroundColor: currentTheme?.colors?.surface?.elevated,
borderColor: isOver ? undefined : currentTheme?.colors?.interactive?.border,
}}
>
<Icon name="delete-bin" className="h-4 w-4" />
</button>
);
};
const StarterPickerList: React.FC<{
pinnable: PinnableItem[];
onPick: (item: PinnableItem) => void;
className?: string;
}> = ({ pinnable, onPick, className }) => {
const { t } = useI18n();
return (
<Command className={cn('min-h-0', className)}>
<CommandInput placeholder={t('chat.draftStarters.searchPlaceholder')} />
<CommandList>
<CommandEmpty>{t('chat.draftStarters.empty')}</CommandEmpty>
{PICKER_SECTIONS.map((section) => {
const list = pinnable.filter((item) => item.section === section.key);
if (list.length === 0) return null;
return (
<CommandGroup key={section.key} heading={t(section.headingKey)}>
{list.map((item) => (
<CommandItem
key={`${item.type}:${item.name}`}
value={`${item.section} ${item.label} ${item.name}`}
onSelect={() => onPick(item)}
>
{/* No per-row icon: the section heading already conveys the type. */}
<span className="truncate">{item.label}</span>
</CommandItem>
))}
</CommandGroup>
);
})}
</CommandList>
</Command>
);
};
const AddStarterPicker: React.FC<{
pinnable: PinnableItem[];
onOpen: () => void;
onAdd: (item: PinnableItem) => void;
}> = ({ pinnable, onOpen, onAdd }) => {
const { t } = useI18n();
const { currentTheme } = useThemeSystem();
const [open, setOpen] = React.useState(false);
return (
<Dialog
open={open}
onOpenChange={(next) => {
setOpen(next);
if (next) onOpen();
}}
>
<DialogTrigger asChild>
<button
type="button"
aria-label={t('chat.draftStarters.add')}
title={t('chat.draftStarters.add')}
className={cn(ROUND_ICON_BUTTON_CLASS, 'text-muted-foreground hover:bg-[var(--interactive-hover)] hover:text-foreground')}
style={{
backgroundColor: currentTheme?.colors?.surface?.elevated,
borderColor: currentTheme?.colors?.interactive?.border,
}}
>
<Icon name="add" className="h-4 w-4" />
</button>
</DialogTrigger>
<DialogContent className="gap-0 overflow-hidden p-0 sm:max-w-sm">
<DialogHeader className="px-4 pb-2 pt-4 text-left">
<DialogTitle>{t('chat.draftStarters.add')}</DialogTitle>
</DialogHeader>
<StarterPickerList
pinnable={pinnable}
onPick={(item) => { onAdd(item); setOpen(false); }}
className="flex max-h-[60vh] flex-col"
/>
</DialogContent>
</Dialog>
);
};
/**
* The editable row of starter chips on the draft welcome screen. Shows the
* global group then the project group (each reorderable within itself), plus a
* "+" picker to pin existing commands/skills. The surface owns how a chip click
* is submitted via `onSubmit`.
*
* Both groups share a single DndContext so the mobile trash drop-zone (which
* replaces the "+" while dragging) is reachable from either group's drag.
* Reorder is constrained to within a chip's own group; cross-group hovers are
* ignored.
*/
const DraftPresetChipsContent: React.FC<DraftPresetChipsProps> = ({ onSubmit, className }) => {
const { global, project, pinnable, ensureLoaded, addStarter, removeStarter, reorder } = useDraftStarters();
const { isMobile } = useDeviceInfo();
const [isDragging, setIsDragging] = React.useState(false);
const sensors = useSensors(
// Desktop: start dragging after a small move so a click still submits.
useSensor(MouseSensor, { activationConstraint: { distance: 8 } }),
// Touch: long-press to drag (tap submits, a quick swipe scrolls instead).
useSensor(TouchSensor, { activationConstraint: { delay: 200, tolerance: 6 } }),
);
const chipById = React.useCallback(
(id: string): ResolvedStarter | undefined =>
global.find((i) => i.id === id) ?? project.find((i) => i.id === id),
[global, project],
);
const handleDragStart = () => setIsDragging(true);
const handleDragCancel = () => setIsDragging(false);
const handleDragEnd = (event: DragEndEvent) => {
setIsDragging(false);
const { active, over } = event;
if (!over) return;
const activeId = String(active.id);
const chip = chipById(activeId);
if (!chip) return;
if (String(over.id) === TRASH_DROPPABLE_ID) {
removeStarter(chip.group, chip.ref);
return;
}
const overId = String(over.id);
if (activeId === overId) return;
const overChip = chipById(overId);
// Reorder only within the same group; ignore cross-group hovers.
if (overChip && overChip.group === chip.group) {
reorder(chip.group, activeId, overId);
}
};
return (
<DndContext
sensors={sensors}
collisionDetection={closestCenter}
// The trash drop-zone mounts on drag start, so re-measure droppables
// while dragging or it never registers a rect to drop onto.
measuring={{ droppable: { strategy: MeasuringStrategy.Always } }}
onDragStart={handleDragStart}
onDragCancel={handleDragCancel}
onDragEnd={handleDragEnd}
>
<div className={cn('flex flex-wrap items-center justify-center gap-2', className)}>
{global.length > 0 ? (
<StarterGroup
items={global}
onSubmit={onSubmit}
onRemove={(item) => removeStarter('global', item.ref)}
hideRemove={isMobile}
/>
) : null}
{project.length > 0 ? (
<StarterGroup
items={project}
onSubmit={onSubmit}
onRemove={(item) => removeStarter('project', item.ref)}
hideRemove={isMobile}
/>
) : null}
{isMobile && isDragging ? (
<TrashDropZone />
) : (
<AddStarterPicker pinnable={pinnable} onOpen={ensureLoaded} onAdd={addStarter} />
)}
</div>
</DndContext>
);
};
export const DraftPresetChips: React.FC<DraftPresetChipsProps> = (props) => {
const visible = useUIStore((state) => state.draftStartersVisible);
return visible ? <DraftPresetChipsContent {...props} /> : null;
};