Miguel Palhas
6f8de8de7c
Six findings from reviewing the accumulated blitz/spawn-v2 diff: - loadRecents restored the seeded cwd but never emitted it, so the leaf's draft kept cwd:"" and the next render reseeded the form blank. - stripDrafts did not recurse, so every half-filled draft in a split tab was written to localStorage; the old test passed only because hydrate discards draft on the way back in. - showRawCwd and selectPreset grabbed focus from async init paths, so a draft pane stole the caret seconds after mounting. - .mv-draft inherited no layout once the form left .modal-body. - onSuccess mounted the new session onto a leaf that may have been closed while the POST was in flight, stranding it in no pane.
649 lines
22 KiB
TypeScript
649 lines
22 KiB
TypeScript
// The multi-view renderer/controller (issues #30 splits, #31 tabs, #33
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// highlights). Owns the tab bar + canvas inside the content pane, builds the
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// active tab's split tree into DOM, and mounts a live AttachConnection into each
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// session leaf via the pool. Empty leaves are draft panes (#57): they render
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// the spawn form inline, and submitting replaces the draft with that session's
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// terminal in place. Drag-to-dock is issue #32; mobile projection is #35.
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import type { SidebarHandle } from "./catalog.js";
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import type { ConnectionPool } from "./connections.js";
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import {
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activeTab,
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addTab,
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closeTab,
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findLeaf,
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type Dir,
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type Layout,
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leaves,
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locateSession,
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type Node,
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openSessions,
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removeLeaf,
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splitLeaf,
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} from "./layout.js";
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import { sessionColor } from "./sessioncolor.js";
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import type { AttachInfo } from "./attach.js";
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import { createSpawnForm, type SpawnFormHandle } from "./spawnForm.js";
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export interface MultiViewOptions {
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pool: ConnectionPool;
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layout: Layout;
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sidebar: SidebarHandle;
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/** Header text for a session's pane / attach view. */
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infoFor: (sessionId: string) => AttachInfo | undefined;
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/** Disconnect a session (the ⏻ tool): tear down its socket and close the pane. */
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onDisconnect: (sessionId: string) => void;
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/** Welcome content for an empty tab. */
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renderWelcome: () => HTMLElement;
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/** Called when a draft-pane submit turns an empty pane into a session pane,
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* so the shell can re-evaluate its route (sidebar vs attach layout). */
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onOpenSessionsChange?: () => void;
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/** Called after any layout change (structure, focus, or divider resize) so the
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* shell can persist it (issue #34). */
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onLayoutChange?: () => void;
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}
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export interface MultiView {
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el: HTMLElement;
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/** Bring a session into the layout: focus it if already open, else fill the
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* focused pane (or open the first pane in an empty tab). */
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openSession: (sessionId: string) => void;
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/** Drop the pane showing `sessionId` (the session was disconnected/killed). */
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closeSession: (sessionId: string) => void;
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/** Every session currently shown in some pane, across all tabs. */
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openSessions: () => Set<string>;
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/** Start dragging a sidebar session into the canvas (issue #32). The
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* controller owns drag-vs-tap: a tap lets the row's normal click open it, a
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* drag shows drop zones to place it. */
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beginSessionDrag: (sessionId: string, e: PointerEvent) => void;
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/** Rebuild the view from the current layout. */
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render: () => void;
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focusedSessionId: () => string | null;
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}
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export function createMultiView(opts: MultiViewOptions): MultiView {
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const { pool, layout, sidebar, infoFor, onDisconnect, renderWelcome } = opts;
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const persist = () => opts.onLayoutChange?.();
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// Draft-pane forms (#57) carry global listeners (dir autocomplete), so each
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// render tears down the previous generation before rebuilding the canvas.
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const draftForms = new Set<SpawnFormHandle>();
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const el = document.createElement("div");
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el.className = "mv";
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const tabBar = document.createElement("div");
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tabBar.className = "mv-tabs";
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const canvas = document.createElement("div");
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canvas.className = "mv-canvas";
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el.append(tabBar, canvas);
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// Mobile (issue #35): below 860px the tree projects to a one-pane-at-a-time
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// strip of pills — splits/drag/resize are desktop-only. The tree is untouched,
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// so widening restores the splits.
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const mq = window.matchMedia("(max-width: 859px)");
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let isMobile = mq.matches;
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mq.addEventListener("change", (e) => {
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isMobile = e.matches;
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render();
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});
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// ---- highlight helpers ----
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function colorMap(): Map<string, string> {
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const m = new Map<string, string>();
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for (const id of openSessions(layout)) m.set(id, sessionColor(id));
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return m;
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}
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function focusedLeafSession(): string | null {
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const tab = activeTab(layout);
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const fl = tab.focusedLeafId ? findLeaf(tab.root, tab.focusedLeafId) : null;
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return fl?.sessionId ?? null;
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}
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/** Update focus styling + pool focus + sidebar highlights without rebuilding
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* the DOM (cheap path for click-to-focus). */
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function syncFocus(): void {
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const tab = activeTab(layout);
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for (const pane of canvas.querySelectorAll<HTMLElement>(".mv-pane")) {
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pane.classList.toggle("is-focused", pane.dataset.leafId === tab.focusedLeafId);
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}
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pool.setFocus(focusedLeafSession());
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sidebar.setHighlights({
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open: openSessions(layout),
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focused: focusedLeafSession(),
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colors: colorMap(),
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});
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}
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function focusLeaf(leafId: string): void {
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const tab = activeTab(layout);
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if (tab.focusedLeafId === leafId) return;
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tab.focusedLeafId = leafId;
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syncFocus();
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persist();
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}
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// ---- pane + split DOM ----
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function buildPane(leaf: Extract<Node, { kind: "leaf" }>): {
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el: HTMLElement;
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host: HTMLElement;
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sessionId: string | null;
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} {
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const pane = document.createElement("div");
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pane.className = "mv-pane";
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pane.dataset.leafId = leaf.id;
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if (leaf.sessionId) {
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pane.dataset.sessionId = leaf.sessionId;
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pane.style.setProperty("--mv-color", sessionColor(leaf.sessionId));
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}
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const host = document.createElement("div");
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host.className = "mv-pane-host";
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if (!leaf.sessionId) {
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// Draft pane (#57): an empty pane is a spawn form. Values hang off the
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// leaf (never persisted) so each draft keeps its own half-filled state;
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// submitting fills this leaf with the new session in place.
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const form = createSpawnForm({
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seed: leaf.draft ?? undefined,
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class: "mv-draft",
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onChange: (values) => {
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leaf.draft = values;
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},
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onSuccess: (session) => {
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// The pane can be closed while the POST is in flight. Mounting the
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// session onto a leaf no longer in the tree would strand it in no
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// pane at all, so only claim the leaf while it is still there.
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const t = activeTab(layout);
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const attached = leaves(t.root).includes(leaf);
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if (attached) {
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leaf.sessionId = session.id;
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leaf.draft = null;
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t.focusedLeafId = leaf.id;
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}
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render();
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opts.onOpenSessionsChange?.();
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},
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});
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draftForms.add(form);
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host.appendChild(form.el);
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}
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const tools = document.createElement("div");
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tools.className = "mv-pane-tools";
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const mkBtn = (label: string, title: string, fn: () => void) => {
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const b = document.createElement("button");
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b.type = "button";
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b.className = "mv-tool";
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b.title = title;
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b.textContent = label;
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b.addEventListener("pointerdown", (e) => e.stopPropagation());
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b.addEventListener("click", (e) => {
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e.stopPropagation();
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fn();
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});
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return b;
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};
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// Order: disconnect (⏻) leftmost, then split-right / split-down / close.
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// Splits are desktop-only; mobile keeps just disconnect + close.
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if (leaf.sessionId) {
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const off = mkBtn("⏻", "Disconnect", () => onDisconnect(leaf.sessionId!));
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off.classList.add("mv-tool-off");
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tools.appendChild(off);
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}
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if (!isMobile) {
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tools.append(
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mkBtn("▥", "Split right", () => splitFocused(leaf.id, "row")),
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mkBtn("▤", "Split down", () => splitFocused(leaf.id, "col")),
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);
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}
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tools.appendChild(mkBtn("✕", "Close pane", () => closePane(leaf.id)));
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pane.append(host, tools);
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pane.addEventListener(
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"pointerdown",
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(e) => {
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focusLeaf(leaf.id);
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// Drag a pane by its title bar (desktop only — no docking on mobile).
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if (isMobile) return;
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const t = e.target as HTMLElement;
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if (t.closest(".attach-header") && !t.closest("button, a, .mv-tool")) {
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runDrag({ kind: "pane", leafId: leaf.id }, e, { deferred: true });
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}
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},
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true,
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);
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return { el: pane, host, sessionId: leaf.sessionId };
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}
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function wireDivider(
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divider: HTMLElement,
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split: Extract<Node, { kind: "split" }>,
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slotA: HTMLElement,
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slotB: HTMLElement,
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container: HTMLElement,
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): void {
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divider.addEventListener("pointerdown", (e) => {
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e.preventDefault();
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e.stopPropagation();
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divider.classList.add("is-dragging");
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divider.setPointerCapture(e.pointerId);
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const rect = container.getBoundingClientRect();
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const move = (ev: PointerEvent) => {
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const frac =
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split.dir === "row"
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? (ev.clientX - rect.left) / rect.width
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: (ev.clientY - rect.top) / rect.height;
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split.ratio = Math.max(0.1, Math.min(0.9, frac));
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slotA.style.flexGrow = String(split.ratio);
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slotB.style.flexGrow = String(1 - split.ratio);
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};
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const up = (ev: PointerEvent) => {
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divider.classList.remove("is-dragging");
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try {
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divider.releasePointerCapture(ev.pointerId);
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} catch {
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/* already released */
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}
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divider.removeEventListener("pointermove", move);
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divider.removeEventListener("pointerup", up);
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persist(); // save the new split ratio
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};
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divider.addEventListener("pointermove", move);
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divider.addEventListener("pointerup", up);
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});
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}
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/** Build the tree DOM, collecting each session leaf's mount host. */
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function buildTree(node: Node, hosts: { id: string; host: HTMLElement; info?: AttachInfo }[]): HTMLElement {
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if (node.kind === "leaf") {
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const pane = buildPane(node);
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if (node.sessionId) {
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hosts.push({ id: node.sessionId, host: pane.host, info: infoFor(node.sessionId) });
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}
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return pane.el;
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}
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const container = document.createElement("div");
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container.className = `mv-split ${node.dir}`;
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const slotA = document.createElement("div");
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slotA.className = "mv-slot";
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slotA.style.cssText = `flex:${node.ratio} 1 0`;
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const divider = document.createElement("div");
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divider.className = "mv-divider";
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const slotB = document.createElement("div");
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slotB.className = "mv-slot";
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slotB.style.cssText = `flex:${1 - node.ratio} 1 0`;
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slotA.appendChild(buildTree(node.a, hosts));
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slotB.appendChild(buildTree(node.b, hosts));
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container.append(slotA, divider, slotB);
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wireDivider(divider, node, slotA, slotB, container);
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return container;
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}
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// ---- tab bar ----
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function renderTabs(): void {
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tabBar.replaceChildren();
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for (const t of layout.tabs) {
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const tab = document.createElement("button");
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tab.type = "button";
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tab.className = "mv-tab" + (t.id === layout.activeTabId ? " is-active" : "");
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const n = leaves(t.root).filter((l) => l.sessionId).length;
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const label = document.createElement("span");
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label.textContent = t.title + (n ? ` · ${n}` : "");
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tab.appendChild(label);
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tab.addEventListener("click", () => {
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if (layout.activeTabId !== t.id) {
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layout.activeTabId = t.id;
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render();
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}
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});
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if (layout.tabs.length > 1) {
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const close = document.createElement("span");
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close.className = "mv-tab-close";
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close.textContent = "✕";
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close.title = "Close tab";
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close.addEventListener("click", (e) => {
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e.stopPropagation();
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closeTab(layout, t.id);
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render();
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});
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tab.appendChild(close);
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}
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tabBar.appendChild(tab);
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}
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const add = document.createElement("button");
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add.type = "button";
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add.className = "mv-tab-add";
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add.textContent = "+";
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add.title = "New tab";
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add.addEventListener("click", () => {
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addTab(layout);
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render();
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});
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tabBar.appendChild(add);
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}
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// ---- mutations ----
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function splitFocused(leafId: string, dir: Dir): void {
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const tab = activeTab(layout);
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tab.focusedLeafId = splitLeaf(tab, leafId, null, dir, true);
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render();
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}
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function closePane(leafId: string): void {
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const tab = activeTab(layout);
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removeLeaf(tab, leafId);
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if (tab.focusedLeafId === leafId) {
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tab.focusedLeafId = leaves(tab.root)[0]?.id ?? null;
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}
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render();
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}
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function openSession(sessionId: string): void {
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const loc = locateSession(layout, sessionId);
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if (loc) {
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layout.activeTabId = loc.tab.id;
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loc.tab.focusedLeafId = loc.leaf.id;
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render();
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return;
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}
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const tab = activeTab(layout);
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if (!tab.root) {
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const id = splitLeaf(tab, "", sessionId, "row", true); // root from empty
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tab.focusedLeafId = id;
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render();
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return;
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}
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// Fill the focused pane (VS Code style: open replaces the active group).
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const target = (tab.focusedLeafId && findLeaf(tab.root, tab.focusedLeafId)) || leaves(tab.root)[0];
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target.sessionId = sessionId;
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target.draft = null;
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tab.focusedLeafId = target.id;
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render();
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}
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// ---- top-level render ----
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function render(): void {
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for (const f of draftForms) f.destroy();
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draftForms.clear();
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renderTabs();
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canvas.replaceChildren();
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const tab = activeTab(layout);
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// Mobile single-tab: the tab bar carries no information (one tab, one pane),
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// so CSS collapses it and we float a ☰ instead (rendered in renderMobile).
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el.classList.toggle("mv-mobile-solo", isMobile && layout.tabs.length === 1);
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if (!tab.root) {
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pool.setVisible([]);
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pool.setFocus(null);
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canvas.appendChild(renderWelcome());
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sidebar.setHighlights({ open: openSessions(layout), focused: null, colors: colorMap() });
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persist();
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return;
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}
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// Keep focus pointing at a real leaf.
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if (!tab.focusedLeafId || !findLeaf(tab.root, tab.focusedLeafId)) {
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tab.focusedLeafId = leaves(tab.root)[0]?.id ?? null;
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}
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if (isMobile) {
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renderMobile(tab);
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persist();
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return;
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}
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const hosts: { id: string; host: HTMLElement; info?: AttachInfo }[] = [];
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canvas.appendChild(buildTree(tab.root, hosts));
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pool.setVisible(hosts.map((h) => ({ id: h.id, pane: h.host, info: h.info })));
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syncFocus();
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persist();
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}
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// Mobile: a pill strip of the active tab's leaves + one full-screen pane.
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function renderMobile(tab: { root: Node | null; focusedLeafId: string | null }): void {
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const ls = leaves(tab.root);
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const focused = (tab.focusedLeafId && findLeaf(tab.root, tab.focusedLeafId)) || ls[0];
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const wrap = document.createElement("div");
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wrap.className = "mv-mobile";
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if (ls.length > 1) {
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const bar = document.createElement("div");
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bar.className = "mv-panebar";
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for (const l of ls) {
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const pill = document.createElement("button");
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pill.type = "button";
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pill.className = "mv-pill" + (l.id === focused.id ? " is-active" : "");
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pill.textContent = l.sessionId ? (infoFor(l.sessionId)?.name ?? l.sessionId.slice(0, 8)) : "empty";
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if (l.sessionId) pill.style.setProperty("--mv-color", sessionColor(l.sessionId));
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pill.addEventListener("click", () => {
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tab.focusedLeafId = l.id;
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render();
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});
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bar.appendChild(pill);
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}
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wrap.appendChild(bar);
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}
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const pane = buildPane(focused);
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pane.el.classList.add("is-focused"); // the only pane — never dimmed
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wrap.appendChild(pane.el);
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canvas.appendChild(wrap);
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// Only the focused leaf's session is live on mobile; the rest park.
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pool.setVisible(
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focused.sessionId ? [{ id: focused.sessionId, pane: pane.host, info: infoFor(focused.sessionId) }] : [],
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);
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pool.setFocus(focused.sessionId ?? null);
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sidebar.setHighlights({ open: openSessions(layout), focused: focused.sessionId ?? null, colors: colorMap() });
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}
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function closeSession(sessionId: string): void {
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const loc = locateSession(layout, sessionId);
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if (!loc) return;
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removeLeaf(loc.tab, loc.leaf.id);
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if (loc.tab.focusedLeafId === loc.leaf.id) {
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loc.tab.focusedLeafId = leaves(loc.tab.root)[0]?.id ?? null;
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}
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render();
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}
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// ---- drag-to-dock (issue #32) ----
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// Drag a pane's title bar, or a session from the sidebar, onto another pane:
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// edge zones split that pane, centre swaps (pane source) or replaces (session
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// source). Sidebar drags move the session if it's already open elsewhere.
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type Zone = "left" | "right" | "top" | "bottom" | "center";
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type DragSource = { kind: "pane"; leafId: string } | { kind: "session"; sessionId: string };
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let drag: {
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source: DragSource;
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ghost: HTMLElement;
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overlay: HTMLElement | null;
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targetLeafId: string | null;
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zone: Zone | null;
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} | null = null;
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function dragSessionId(src: DragSource): string | null {
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if (src.kind === "session") return src.sessionId;
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return findLeaf(activeTab(layout).root, src.leafId)?.sessionId ?? null;
|
|
}
|
|
/** The leaf in the ACTIVE tab the source occupies (skip it as a drop target). */
|
|
function dragSelfLeaf(src: DragSource): string | null {
|
|
if (src.kind === "pane") return src.leafId;
|
|
const loc = locateSession(layout, src.sessionId);
|
|
return loc && loc.tab.id === layout.activeTabId ? loc.leaf.id : null;
|
|
}
|
|
function dragLabel(src: DragSource): string {
|
|
const sid = dragSessionId(src);
|
|
if (!sid) return "empty pane";
|
|
return infoFor(sid)?.name ?? sid;
|
|
}
|
|
|
|
function makeGhost(src: DragSource): HTMLElement {
|
|
const g = document.createElement("div");
|
|
g.className = "mv-drag-ghost";
|
|
g.textContent = `⠿ ${dragLabel(src)}`;
|
|
document.body.appendChild(g);
|
|
return g;
|
|
}
|
|
|
|
function runDrag(src: DragSource, e: PointerEvent, opts: { deferred: boolean }): void {
|
|
const sx = e.clientX;
|
|
const sy = e.clientY;
|
|
let started = !opts.deferred;
|
|
if (started) drag = { source: src, ghost: makeGhost(src), overlay: null, targetLeafId: null, zone: null };
|
|
const place = (ev: PointerEvent) => {
|
|
if (drag) {
|
|
drag.ghost.style.left = `${ev.clientX + 12}px`;
|
|
drag.ghost.style.top = `${ev.clientY + 12}px`;
|
|
}
|
|
};
|
|
if (started) place(e);
|
|
const move = (ev: PointerEvent) => {
|
|
if (!started) {
|
|
if (Math.hypot(ev.clientX - sx, ev.clientY - sy) < 5) return;
|
|
started = true;
|
|
document.body.style.userSelect = "none";
|
|
drag = { source: src, ghost: makeGhost(src), overlay: null, targetLeafId: null, zone: null };
|
|
}
|
|
place(ev);
|
|
updateDock(ev);
|
|
};
|
|
const up = () => {
|
|
window.removeEventListener("pointermove", move);
|
|
window.removeEventListener("pointerup", up);
|
|
if (!started) return;
|
|
document.body.style.userSelect = "";
|
|
suppressNextClick();
|
|
finishDrag();
|
|
};
|
|
window.addEventListener("pointermove", move);
|
|
window.addEventListener("pointerup", up);
|
|
}
|
|
|
|
/** Eat the click that follows a real drag (so a dragged sidebar row doesn't
|
|
* also navigate, and a dragged pane title doesn't trigger anything). */
|
|
function suppressNextClick(): void {
|
|
const kill = (e: MouseEvent) => {
|
|
e.preventDefault();
|
|
e.stopPropagation();
|
|
window.removeEventListener("click", kill, true);
|
|
};
|
|
window.addEventListener("click", kill, true);
|
|
}
|
|
|
|
function paneUnder(x: number, y: number): HTMLElement | null {
|
|
for (const node of document.elementsFromPoint(x, y)) {
|
|
const pane = (node as HTMLElement).closest?.(".mv-pane") as HTMLElement | null;
|
|
if (pane && canvas.contains(pane)) return pane;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
function clearOverlay(): void {
|
|
drag?.overlay?.remove();
|
|
if (drag) drag.overlay = null;
|
|
}
|
|
|
|
function updateDock(ev: PointerEvent): void {
|
|
if (!drag) return;
|
|
clearOverlay();
|
|
const pane = paneUnder(ev.clientX, ev.clientY);
|
|
const self = dragSelfLeaf(drag.source);
|
|
if (!pane || pane.dataset.leafId === self) {
|
|
drag.targetLeafId = null;
|
|
drag.zone = null;
|
|
return;
|
|
}
|
|
const r = pane.getBoundingClientRect();
|
|
const fx = (ev.clientX - r.left) / r.width;
|
|
const fy = (ev.clientY - r.top) / r.height;
|
|
const edges = { left: fx, right: 1 - fx, top: fy, bottom: 1 - fy };
|
|
const nearest = (Object.keys(edges) as (keyof typeof edges)[]).reduce((m, k) =>
|
|
edges[k] < edges[m] ? k : m,
|
|
);
|
|
const zone: Zone = edges[nearest] < 0.28 ? nearest : "center";
|
|
drag.targetLeafId = pane.dataset.leafId!;
|
|
drag.zone = zone;
|
|
|
|
const ov = document.createElement("div");
|
|
ov.className = "mv-dock-overlay";
|
|
const hot = document.createElement("div");
|
|
hot.className = "mv-dock-zone";
|
|
const css: Record<Zone, string> = {
|
|
left: "left:0;top:0;width:50%;height:100%",
|
|
right: "left:50%;top:0;width:50%;height:100%",
|
|
top: "left:0;top:0;width:100%;height:50%",
|
|
bottom: "left:0;top:50%;width:100%;height:50%",
|
|
center: "inset:14%",
|
|
};
|
|
hot.style.cssText = "position:absolute;" + css[zone];
|
|
ov.appendChild(hot);
|
|
pane.appendChild(ov);
|
|
drag.overlay = ov;
|
|
}
|
|
|
|
function finishDrag(): void {
|
|
if (!drag) return;
|
|
const { source, targetLeafId, zone, ghost } = drag;
|
|
ghost.remove();
|
|
clearOverlay();
|
|
drag = null;
|
|
if (!targetLeafId || !zone) return;
|
|
|
|
const tab = activeTab(layout);
|
|
const self = dragSelfLeaf(source);
|
|
if (targetLeafId === self) return; // dropped on its own pane
|
|
const target = findLeaf(tab.root, targetLeafId);
|
|
if (!target) return;
|
|
const sessionId = dragSessionId(source);
|
|
|
|
if (zone === "center") {
|
|
if (source.kind === "pane" && self) {
|
|
const dragged = findLeaf(tab.root, self)!;
|
|
[dragged.sessionId, target.sessionId] = [target.sessionId, dragged.sessionId];
|
|
[dragged.draft, target.draft] = [target.draft, dragged.draft];
|
|
tab.focusedLeafId = target.id;
|
|
} else if (sessionId) {
|
|
const loc = locateSession(layout, sessionId);
|
|
if (loc) removeLeaf(loc.tab, loc.leaf.id);
|
|
const t2 = findLeaf(tab.root, targetLeafId);
|
|
if (t2) {
|
|
t2.sessionId = sessionId;
|
|
t2.draft = null;
|
|
tab.focusedLeafId = t2.id;
|
|
}
|
|
}
|
|
render();
|
|
return;
|
|
}
|
|
|
|
// edge zone → split the target, placing the source beside it
|
|
const dir: Dir = zone === "left" || zone === "right" ? "row" : "col";
|
|
const after = zone === "right" || zone === "bottom";
|
|
const loc = sessionId ? locateSession(layout, sessionId) : null;
|
|
if (source.kind === "pane" && self) removeLeaf(tab, self);
|
|
else if (loc) removeLeaf(loc.tab, loc.leaf.id);
|
|
tab.focusedLeafId = splitLeaf(tab, targetLeafId, sessionId, dir, after);
|
|
render();
|
|
}
|
|
|
|
function beginSessionDrag(sessionId: string, e: PointerEvent): void {
|
|
runDrag({ kind: "session", sessionId }, e, { deferred: true });
|
|
}
|
|
|
|
return {
|
|
el,
|
|
openSession,
|
|
closeSession,
|
|
openSessions: () => openSessions(layout),
|
|
beginSessionDrag,
|
|
render,
|
|
focusedSessionId: focusedLeafSession,
|
|
};
|
|
}
|