1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
"use client";
// ShortcutsRoot — global key listener + command palette + help overlay.
// Mount once in app/layout.tsx. Pages register actions via useAction().
import { useEffect, useState, useSyncExternalStore } from "react";
import { useRouter } from "next/navigation";
import { NAV } from "@/lib/nav";
import {
shortcuts,
eventToCombo,
prettyCombo,
shouldIgnore,
type Action,
} from "@/lib/shortcuts";
export function ShortcutsRoot() {
const router = useRouter();
const [paletteOpen, setPaletteOpen] = useState(false);
const [helpOpen, setHelpOpen] = useState(false);
const [searchOpen, setSearchOpen] = useState(false);
// Built-in actions: nav jumps, palette, search, help.
useEffect(() => {
const unsubs: Array<() => void> = [];
// Nav jumps use mod+shift+N — browser owns plain mod+1..9 (tab switching).
NAV.slice(0, 9).forEach((item, i) => {
unsubs.push(
shortcuts.register({
id: `nav-${i}`,
label: `Go to ${item.label}`,
combo: `mod+shift+${i + 1}`,
group: "Navigation",
run: () => router.push(item.href),
}),
);
});
unsubs.push(
// Palette uses mod+shift+p — browser owns plain mod+p (print).
shortcuts.register({
id: "palette",
label: "Open command palette",
combo: "mod+shift+p",
group: "Help",
run: () => setPaletteOpen(true),
}),
shortcuts.register({
id: "search",
label: "Search",
combo: "mod+k",
group: "Actions",
run: () => setSearchOpen(true),
}),
shortcuts.register({
id: "help",
label: "Show keyboard shortcuts",
combo: "?",
group: "Help",
run: () => setHelpOpen(true),
}),
);
return () => { for (const u of unsubs) u(); };
}, [router]);
// Global key listener.
useEffect(() => {
const handler = (e: KeyboardEvent) => {
// Always allow Escape to close overlays even from inputs.
if (e.key === "Escape") {
if (paletteOpen) { setPaletteOpen(false); e.preventDefault(); return; }
if (helpOpen) { setHelpOpen(false); e.preventDefault(); return; }
if (searchOpen) { setSearchOpen(false); e.preventDefault(); return; }
}
if (shouldIgnore(e)) return;
const combo = eventToCombo(e);
const action = shortcuts.byCombo(combo);
if (action) {
e.preventDefault();
void action.run();
}
};
window.addEventListener("keydown", handler);
return () => window.removeEventListener("keydown", handler);
}, [paletteOpen, helpOpen, searchOpen]);
return (
<>
{paletteOpen && <CommandPalette onClose={() => setPaletteOpen(false)} />}
{helpOpen && <ShortcutsHelp onClose={() => setHelpOpen(false)} />}
{searchOpen && <SearchModal onClose={() => setSearchOpen(false)} />}
</>
);
}
// ─── Command palette ──────────────────────────────────────────────────
function useShortcutsList(): Action[] {
return useSyncExternalStore(
(cb) => shortcuts.subscribe(cb),
() => shortcuts.list(),
() => shortcuts.list(),
);
}
function CommandPalette({ onClose }: { onClose: () => void }) {
const all = useShortcutsList();
const [q, setQ] = useState("");
const filtered = q
? all.filter((a) =>
(a.label + " " + a.group + " " + (a.hint ?? "")).toLowerCase().includes(q.toLowerCase()),
)
: all;
return (
<Overlay onClose={onClose}>
<div className="sc-palette" onClick={(e) => e.stopPropagation()}>
<input
autoFocus
value={q}
onChange={(e) => setQ(e.target.value)}
placeholder="Type a command…"
className="sc-palette-input"
/>
<ul className="sc-palette-list">
{filtered.length === 0 && <li className="sc-palette-empty">No matches</li>}
{filtered.map((a) => (
<li key={a.id}>
<button
className="sc-palette-item"
onClick={() => { void a.run(); onClose(); }}
>
<span className="sc-palette-group">{a.group}</span>
<span className="sc-palette-label">{a.label}</span>
{a.combo && <kbd className="sc-kbd">{prettyCombo(a.combo)}</kbd>}
</button>
</li>
))}
</ul>
</div>
</Overlay>
);
}
// ─── Help overlay ─────────────────────────────────────────────────────
function ShortcutsHelp({ onClose }: { onClose: () => void }) {
const all = useShortcutsList().filter((a) => a.combo);
const groups: Record<string, Action[]> = {};
for (const a of all) (groups[a.group] ||= []).push(a);
return (
<Overlay onClose={onClose}>
<div className="sc-help" onClick={(e) => e.stopPropagation()}>
<header className="sc-help-header">
<h2>Keyboard shortcuts</h2>
<button className="sc-help-close" onClick={onClose} aria-label="Close">×</button>
</header>
{Object.entries(groups).map(([group, actions]) => (
<section key={group}>
<h3>{group}</h3>
<ul>
{actions.map((a) => (
<li key={a.id}>
<span>{a.label}</span>
<kbd className="sc-kbd">{prettyCombo(a.combo!)}</kbd>
</li>
))}
</ul>
</section>
))}
</div>
</Overlay>
);
}
// ─── Search modal (placeholder) ───────────────────────────────────────
function SearchModal({ onClose }: { onClose: () => void }) {
return (
<Overlay onClose={onClose}>
<div className="sc-search" onClick={(e) => e.stopPropagation()}>
<input autoFocus placeholder="Search…" className="sc-palette-input" />
<p className="sc-search-hint">
TODO: wire global search. Esc to close.
</p>
</div>
</Overlay>
);
}
function Overlay({ children, onClose }: { children: React.ReactNode; onClose: () => void }) {
return (
<div className="sc-overlay" onClick={onClose} role="dialog" aria-modal="true">
{children}
</div>
);
}
|