Method focus

src/ink/focus.ts:27–42

(node: DOMElement)

  }

  focus(node: DOMElement): void {
    if (node === this.activeElement) return
    if (!this.enabled) return

    const previous = this.activeElement
    if (previous) {
      // Deduplicate before pushing to prevent unbounded growth from Tab cycling
      const idx = this.focusStack.indexOf(previous)
      if (idx !== -1) this.focusStack.splice(idx, 1)
      this.focusStack.push(previous)
      if (this.focusStack.length > MAX_FOCUS_STACK) this.focusStack.shift()
      this.dispatchFocusEvent(previous, new FocusEvent('blur', node))
    }
    this.activeElement = node
    this.dispatchFocusEvent(node, new FocusEvent('focus', previous))
  }

  blur(): void {
    if (!this.activeElement) return