init claude-code

ink/events/keyboard-event.ts

@@ -0,0 +1,51 @@
+import type { ParsedKey } from '../parse-keypress.js'
+import { TerminalEvent } from './terminal-event.js'
+
+/**
+ * Keyboard event dispatched through the DOM tree via capture/bubble.
+ *
+ * Follows browser KeyboardEvent semantics: `key` is the literal character
+ * for printable keys ('a', '3', ' ', '/') and a multi-char name for
+ * special keys ('down', 'return', 'escape', 'f1'). The idiomatic
+ * printable-char check is `e.key.length === 1`.
+ */
+export class KeyboardEvent extends TerminalEvent {
+  readonly key: string
+  readonly ctrl: boolean
+  readonly shift: boolean
+  readonly meta: boolean
+  readonly superKey: boolean
+  readonly fn: boolean
+
+  constructor(parsedKey: ParsedKey) {
+    super('keydown', { bubbles: true, cancelable: true })
+
+    this.key = keyFromParsed(parsedKey)
+    this.ctrl = parsedKey.ctrl
+    this.shift = parsedKey.shift
+    this.meta = parsedKey.meta || parsedKey.option
+    this.superKey = parsedKey.super
+    this.fn = parsedKey.fn
+  }
+}
+
+function keyFromParsed(parsed: ParsedKey): string {
+  const seq = parsed.sequence ?? ''
+  const name = parsed.name ?? ''
+
+  // Ctrl combos: sequence is a control byte (\x03 for ctrl+c), name is the
+  // letter. Browsers report e.key === 'c' with e.ctrlKey === true.
+  if (parsed.ctrl) return name
+
+  // Single printable char (space through ~, plus anything above ASCII):
+  // use the literal char. Browsers report e.key === '3', not 'Digit3'.
+  if (seq.length === 1) {
+    const code = seq.charCodeAt(0)
+    if (code >= 0x20 && code !== 0x7f) return seq
+  }
+
+  // Special keys (arrows, F-keys, return, tab, escape, etc.): sequence is
+  // either an escape sequence (\x1b[B) or a control byte (\r, \t), so use
+  // the parsed name. Browsers report e.key === 'ArrowDown'.
+  return name || seq
+}