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feat: drag-and-drop attachment reordering #709

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feat: drag-and-drop attachment reordering #709

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787fc5b
feat: add drag-and-drop reordering for attachments
Jun 17, 2026
750ba4d
fix: context gauge stuck — ||→?? for contextTokens to not treat 0 as …
Jun 18, 2026
95689d2
fix: context gauge cache % — use cumulative promptTokens, not single-…
Jun 18, 2026
03b9dc7
fix: prevent duplicate session tabs — check existing in setRuns updater
Jun 18, 2026
2fbb57f
fix: session mixing — disable legacy useChatIPC when dashboard transp…
Jun 18, 2026
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20 changes: 20 additions & 0 deletions src/renderer/src/assets/main.css
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Original file line number Diff line number Diff line change
Expand Up @@ -3925,6 +3925,26 @@ body {
color: var(--text-secondary);
}

/* Drag-and-drop attachment reorder wrapper */
.attachment-drag-wrapper {
cursor: grab;
transition: opacity 0.15s ease;
}

.attachment-drag-wrapper:active {
cursor: grabbing;
}

.attachment-dragging {
opacity: 0.4;
}

.attachment-drag-over {
outline: 2px dashed var(--border-focus, var(--accent));
outline-offset: 2px;
border-radius: var(--radius-sm);
}

.attachment-chip {
position: relative;
display: inline-flex;
Expand Down
50 changes: 45 additions & 5 deletions src/renderer/src/screens/Chat/ChatInput.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -82,6 +82,8 @@ export const ChatInput = forwardRef<ChatInputHandle, ChatInputProps>(
const [slashSelectedIndex, setSlashSelectedIndex] = useState(0);
const [attachments, setAttachments] = useState<Attachment[]>([]);
const [attachmentError, setAttachmentError] = useState<string | null>(null);
const [dragIndex, setDragIndex] = useState<number | null>(null);
const [dragOverIndex, setDragOverIndex] = useState<number | null>(null);
const inputRef = useRef<HTMLTextAreaElement>(null);
const slashMenuRef = useRef<HTMLDivElement>(null);
const fileInputRef = useRef<HTMLInputElement>(null);
Expand Down Expand Up @@ -382,6 +384,35 @@ export const ChatInput = forwardRef<ChatInputHandle, ChatInputProps>(
setAttachmentError(null);
}

// Drag-and-drop reordering
function handleDragStart(e: React.DragEvent, index: number): void {
setDragIndex(index);
e.dataTransfer.effectAllowed = "move";
e.dataTransfer.setData("text/plain", String(index));
}

function handleDragOver(e: React.DragEvent, index: number): void {
e.preventDefault();
e.dataTransfer.dropEffect = "move";
setDragOverIndex(index);
}

function handleDrop(e: React.DragEvent, index: number): void {
e.preventDefault();
if (dragIndex === null || dragIndex === index) return;
setAttachments((prev) => {
const next = [...prev];
const [moved] = next.splice(dragIndex, 1);
next.splice(index, 0, moved);
return next;
});
}
Comment on lines +400 to +409

@greptile-apps greptile-apps Bot Jun 17, 2026

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P2 Drag state not cleared on successful drop

handleDrop reorders the attachments but leaves dragIndex and dragOverIndex set. The onDragEnd event does fire after onDrop per the HTML5 DnD spec and will clear them, but calling handleDragEnd() directly inside handleDrop makes the cleanup unconditional and symmetrical, and avoids any edge-case flash if onDragEnd is delayed or skipped in unusual browser environments.

Suggested change
function handleDrop(e: React.DragEvent, index: number): void {
e.preventDefault();
if (dragIndex === null || dragIndex === index) return;
setAttachments((prev) => {
const next = [...prev];
const [moved] = next.splice(dragIndex, 1);
next.splice(index, 0, moved);
return next;
});
}
function handleDrop(e: React.DragEvent, index: number): void {
e.preventDefault();
if (dragIndex === null || dragIndex === index) return;
setAttachments((prev) => {
const next = [...prev];
const [moved] = next.splice(dragIndex, 1);
next.splice(index, 0, moved);
return next;
});
handleDragEnd();
}

Note: If this suggestion doesn't match your team's coding style, reply to this and let me know. I'll remember it for next time!


function handleDragEnd(): void {
setDragIndex(null);
setDragOverIndex(null);
}

// Pre-send validation gate (#369): even with the queue model from
// PR #379, we still block Send when readiness fails — a queued message
// with a missing API key would just fail later. The !isLoading gate
Expand Down Expand Up @@ -455,12 +486,21 @@ export const ChatInput = forwardRef<ChatInputHandle, ChatInputProps>(
)}
{(attachments.length > 0 || attachmentError) && (
<div className="chat-attachment-strip">
{attachments.map((att) => (
<AttachmentChip
{attachments.map((att, i) => (
<div
key={att.id}
attachment={att}
onRemove={() => removeAttachment(att.id)}
/>
className={`attachment-drag-wrapper${dragOverIndex === i ? " attachment-drag-over" : ""}${dragIndex === i ? " attachment-dragging" : ""}`}

@greptile-apps greptile-apps Bot Jun 17, 2026

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P2 Drop-target outline shown on the item being dragged

When dragOverIndex === dragIndex === i (the cursor re-enters the source element during a drag), the wrapper receives both attachment-dragging (faded) and attachment-drag-over (dashed outline) at the same time. The outline only makes sense for valid other drop targets; guarding the condition with dragIndex !== i prevents the visual conflict.

Suggested change
className={`attachment-drag-wrapper${dragOverIndex === i ? " attachment-drag-over" : ""}${dragIndex === i ? " attachment-dragging" : ""}`}
className={`attachment-drag-wrapper${dragOverIndex === i && dragIndex !== i ? " attachment-drag-over" : ""}${dragIndex === i ? " attachment-dragging" : ""}`}

draggable
onDragStart={(e) => handleDragStart(e, i)}
onDragOver={(e) => handleDragOver(e, i)}
onDrop={(e) => handleDrop(e, i)}
onDragEnd={handleDragEnd}
Comment on lines +495 to +497

@greptile-apps greptile-apps Bot Jun 17, 2026

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P2 Dashed outline lingers when cursor leaves the strip

dragOverIndex is only updated when the cursor enters a new wrapper element, so once the cursor exits all attachment wrappers (e.g., moves into the textarea) the outline stays painted on the last-hovered chip for the remainder of the drag. Adding onDragLeave to reset dragOverIndex to null clears it immediately.

Suggested change
onDragOver={(e) => handleDragOver(e, i)}
onDrop={(e) => handleDrop(e, i)}
onDragEnd={handleDragEnd}
onDragOver={(e) => handleDragOver(e, i)}
onDragLeave={() => setDragOverIndex(null)}
onDrop={(e) => handleDrop(e, i)}
onDragEnd={handleDragEnd}

>
<AttachmentChip
attachment={att}
onRemove={() => removeAttachment(att.id)}
/>
</div>
))}
{attachmentError && (
<div className="chat-attachment-error" role="alert">
Expand Down
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