const C = {
  expand: "▶",
  collapse: "▼",
  sortAsc: "▲",
  sortDesc: "▼",
  sortNone: "⇅",
  submenuArrow: "▶",
  dragHandle: "⋮⋮",
  toolPanel: "☰"
};
class b {
  /**
   * Plugin dependencies - declare other plugins this one requires.
   *
   * Dependencies are validated when the plugin is attached.
   * Required dependencies throw an error if missing.
   * Optional dependencies log an info message if missing.
   *
   * @example
   * ```typescript
   * static readonly dependencies: PluginDependency[] = [
   *   { name: 'editing', required: true, reason: 'Tracks cell edits for undo/redo' },
   *   { name: 'selection', required: false, reason: 'Enables selection-based undo' },
   * ];
   * ```
   */
  static dependencies;
  /**
   * Plugin version - defaults to grid version for built-in plugins.
   * Third-party plugins can override with their own semver.
   */
  version = typeof __GRID_VERSION__ < "u" ? __GRID_VERSION__ : "dev";
  /** CSS styles to inject into the grid's shadow DOM */
  styles;
  /** Custom cell renderers keyed by type name */
  cellRenderers;
  /** Custom header renderers keyed by type name */
  headerRenderers;
  /** Custom cell editors keyed by type name */
  cellEditors;
  /** The grid instance this plugin is attached to */
  grid;
  /** Plugin configuration - merged with defaults in attach() */
  config;
  /** User-provided configuration from constructor */
  userConfig;
  /**
   * Plugin-level AbortController for event listener cleanup.
   * Created fresh in attach(), aborted in detach().
   * This ensures event listeners are properly cleaned up when plugins are re-attached.
   */
  #t;
  /**
   * Default configuration - subclasses should override this getter.
   * Note: This must be a getter (not property initializer) for proper inheritance
   * since property initializers run after parent constructor.
   */
  get defaultConfig() {
    return {};
  }
  constructor(t = {}) {
    this.userConfig = t;
  }
  /**
   * Called when the plugin is attached to a grid.
   * Override to set up event listeners, initialize state, etc.
   *
   * @example
   * ```ts
   * attach(grid: GridElement): void {
   *   super.attach(grid);
   *   // Set up document-level listeners with auto-cleanup
   *   document.addEventListener('keydown', this.handleEscape, {
   *     signal: this.disconnectSignal
   *   });
   * }
   * ```
   */
  attach(t) {
    this.#t?.abort(), this.#t = new AbortController(), this.grid = t, this.config = { ...this.defaultConfig, ...this.userConfig };
  }
  /**
   * Called when the plugin is detached from a grid.
   * Override to clean up event listeners, timers, etc.
   *
   * @example
   * ```ts
   * detach(): void {
   *   // Clean up any state not handled by disconnectSignal
   *   this.selectedRows.clear();
   *   this.cache = null;
   * }
   * ```
   */
  detach() {
    this.#t?.abort(), this.#t = void 0;
  }
  /**
   * Get another plugin instance from the same grid.
   * Use for inter-plugin communication.
   *
   * @example
   * ```ts
   * const selection = this.getPlugin(SelectionPlugin);
   * if (selection) {
   *   const selectedRows = selection.getSelectedRows();
   * }
   * ```
   */
  getPlugin(t) {
    return this.grid?.getPlugin(t);
  }
  /**
   * Emit a custom event from the grid.
   */
  emit(t, e) {
    this.grid?.dispatchEvent?.(new CustomEvent(t, { detail: e, bubbles: !0 }));
  }
  /**
   * Emit a cancelable custom event from the grid.
   * @returns `true` if the event was cancelled (preventDefault called), `false` otherwise
   */
  emitCancelable(t, e) {
    const i = new CustomEvent(t, { detail: e, bubbles: !0, cancelable: !0 });
    return this.grid?.dispatchEvent?.(i), i.defaultPrevented;
  }
  /**
   * Request a re-render of the grid.
   */
  requestRender() {
    this.grid?.requestRender?.();
  }
  /**
   * Request a re-render and restore focus styling afterward.
   * Use this when a plugin action (like expand/collapse) triggers a render
   * but needs to maintain keyboard navigation focus.
   */
  requestRenderWithFocus() {
    this.grid?.requestRenderWithFocus?.();
  }
  /**
   * Request a lightweight style update without rebuilding DOM.
   * Use this instead of requestRender() when only CSS classes need updating.
   */
  requestAfterRender() {
    this.grid?.requestAfterRender?.();
  }
  /**
   * Get the current rows from the grid.
   */
  get rows() {
    return this.grid?.rows ?? [];
  }
  /**
   * Get the original unfiltered/unprocessed rows from the grid.
   * Use this when you need all source data regardless of active filters.
   */
  get sourceRows() {
    return this.grid?.sourceRows ?? [];
  }
  /**
   * Get the current columns from the grid.
   */
  get columns() {
    return this.grid?.columns ?? [];
  }
  /**
   * Get only visible columns from the grid (excludes hidden).
   * Use this for rendering that needs to match the grid template.
   */
  get visibleColumns() {
    return this.grid?._visibleColumns ?? [];
  }
  /**
   * Get the grid as an HTMLElement for direct DOM operations.
   * Use sparingly - prefer the typed GridElementRef API when possible.
   *
   * @example
   * ```ts
   * const width = this.gridElement.clientWidth;
   * this.gridElement.classList.add('my-plugin-active');
   * ```
   */
  get gridElement() {
    return this.grid;
  }
  /**
   * Get the render root of the grid for DOM queries.
   * @deprecated Use `gridElement` instead. This getter exists only for backward compatibility.
   *
   * With Shadow DOM removed, the grid element itself is the render root.
   * All new code should use `this.gridElement` for DOM queries.
   *
   * @example
   * // OLD (deprecated)
   * const rows = this.shadowRoot?.querySelector('.rows');
   *
   * // NEW (preferred)
   * const rows = this.gridElement.querySelector('.rows');
   */
  get shadowRoot() {
    return this.gridElement;
  }
  /**
   * Get the disconnect signal for event listener cleanup.
   * This signal is aborted when the grid disconnects from the DOM.
   * Use this when adding event listeners that should be cleaned up automatically.
   *
   * Best for:
   * - Document/window-level listeners added in attach()
   * - Listeners on the grid element itself
   * - Any listener that should persist across renders
   *
   * Not needed for:
   * - Listeners on elements created in afterRender() (removed with element)
   *
   * @example
   * element.addEventListener('click', handler, { signal: this.disconnectSignal });
   * document.addEventListener('keydown', handler, { signal: this.disconnectSignal });
   */
  get disconnectSignal() {
    return this.#t?.signal ?? this.grid?.disconnectSignal;
  }
  /**
   * Get the grid-level icons configuration.
   * Returns merged icons (user config + defaults).
   */
  get gridIcons() {
    const t = this.grid?.gridConfig?.icons ?? {};
    return { ...C, ...t };
  }
  // #region Animation Helpers
  /**
   * Check if animations are enabled at the grid level.
   * Respects gridConfig.animation.mode and the CSS variable set by the grid.
   *
   * Plugins should use this to skip animations when:
   * - Animation mode is 'off' or `false`
   * - User prefers reduced motion and mode is 'reduced-motion' (default)
   *
   * @example
   * ```ts
   * private get animationStyle(): 'slide' | 'fade' | false {
   *   if (!this.isAnimationEnabled) return false;
   *   return this.config.animation ?? 'slide';
   * }
   * ```
   */
  get isAnimationEnabled() {
    const t = this.grid?.effectiveConfig?.animation?.mode ?? "reduced-motion";
    if (t === !1 || t === "off") return !1;
    if (t === !0 || t === "on") return !0;
    const e = this.gridElement;
    return e ? getComputedStyle(e).getPropertyValue("--tbw-animation-enabled").trim() !== "0" : !0;
  }
  /**
   * Get the animation duration in milliseconds from CSS variable.
   * Falls back to 200ms if not set.
   *
   * Plugins can use this for their animation timing to stay consistent
   * with the grid-level animation.duration setting.
   *
   * @example
   * ```ts
   * element.animate(keyframes, { duration: this.animationDuration });
   * ```
   */
  get animationDuration() {
    const t = this.gridElement;
    if (t) {
      const e = getComputedStyle(t).getPropertyValue("--tbw-animation-duration").trim(), i = parseInt(e, 10);
      if (!isNaN(i)) return i;
    }
    return 200;
  }
  // #endregion
  /**
   * Resolve an icon value to string or HTMLElement.
   * Checks plugin config first, then grid-level icons, then defaults.
   *
   * @param iconKey - The icon key in GridIcons (e.g., 'expand', 'collapse')
   * @param pluginOverride - Optional plugin-level override
   * @returns The resolved icon value
   */
  resolveIcon(t, e) {
    return e !== void 0 ? e : this.gridIcons[t];
  }
  /**
   * Set an icon value on an element.
   * Handles both string (text/HTML) and HTMLElement values.
   *
   * @param element - The element to set the icon on
   * @param icon - The icon value (string or HTMLElement)
   */
  setIcon(t, e) {
    typeof e == "string" ? t.innerHTML = e : e instanceof HTMLElement && (t.innerHTML = "", t.appendChild(e.cloneNode(!0)));
  }
  /**
   * Log a warning message.
   */
  warn(t) {
    console.warn(`[tbw-grid:${this.name}] ${t}`);
  }
  // #endregion
}
const h = 100;
function a(r) {
  if (r == null)
    return h;
  if (typeof r == "number")
    return r;
  const t = parseFloat(r);
  return isNaN(t) ? h : t;
}
function c(r) {
  return r.map((t) => a(t.width));
}
function f(r) {
  const t = [];
  let e = 0;
  for (const i of r)
    t.push(e), e += a(i.width);
  return t;
}
function g(r) {
  return r.reduce((t, e) => t + a(e.width), 0);
}
function p(r, t, e, i, n) {
  const s = e.length;
  if (s === 0)
    return { startCol: 0, endCol: 0, visibleColumns: [] };
  let o = w(r, e, i);
  o = Math.max(0, o - n);
  const m = r + t;
  let u = o;
  for (let l = o; l < s; l++) {
    if (e[l] >= m) {
      u = l - 1;
      break;
    }
    u = l;
  }
  u = Math.min(s - 1, u + n);
  const d = [];
  for (let l = o; l <= u; l++)
    d.push(l);
  return { startCol: o, endCol: u, visibleColumns: d };
}
function w(r, t, e) {
  let i = 0, n = t.length - 1;
  for (; i < n; ) {
    const s = Math.floor((i + n) / 2);
    t[s] + e[s] <= r ? i = s + 1 : n = s;
  }
  return i;
}
function R(r, t, e) {
  return e ? r > t : !1;
}
class E extends b {
  name = "columnVirtualization";
  get defaultConfig() {
    return {
      autoEnable: !0,
      threshold: 30,
      overscan: 3
    };
  }
  // #region Internal State
  isVirtualized = !1;
  startCol = 0;
  endCol = 0;
  scrollLeft = 0;
  totalWidth = 0;
  columnWidths = [];
  columnOffsets = [];
  // #endregion
  // #region Lifecycle
  attach(t) {
    super.attach(t);
    const e = this.columns;
    this.columnWidths = c(e), this.columnOffsets = f(e), this.totalWidth = g(e), this.endCol = e.length - 1;
  }
  detach() {
    this.columnWidths = [], this.columnOffsets = [], this.isVirtualized = !1, this.startCol = 0, this.endCol = 0, this.scrollLeft = 0, this.totalWidth = 0;
  }
  // #endregion
  // #region Hooks
  processColumns(t) {
    const e = R(t.length, this.config.threshold ?? 30, this.config.autoEnable ?? !0);
    if (this.isVirtualized = e ?? !1, this.columnWidths = c(t), this.columnOffsets = f(t), this.totalWidth = g(t), !e)
      return this.startCol = 0, this.endCol = t.length - 1, [...t];
    const i = this.grid.clientWidth || 800, n = p(
      this.scrollLeft,
      i,
      this.columnOffsets,
      this.columnWidths,
      this.config.overscan ?? 3
    );
    return this.startCol = n.startCol, this.endCol = n.endCol, n.visibleColumns.map((s) => t[s]);
  }
  afterRender() {
    if (!this.isVirtualized) return;
    const t = this.gridElement;
    if (!t) return;
    const e = this.columnOffsets[this.startCol] ?? 0, i = t.querySelector(".header-row"), n = t.querySelectorAll(".data-grid-row");
    i && (i.style.paddingLeft = `${e}px`), n.forEach((o) => {
      o.style.paddingLeft = `${e}px`;
    });
    const s = t.querySelector(".rows-viewport .rows");
    s && (s.style.width = `${this.totalWidth}px`);
  }
  onScroll(t) {
    !this.isVirtualized || Math.abs(t.scrollLeft - this.scrollLeft) < 1 || (this.scrollLeft = t.scrollLeft, this.requestRender());
  }
  // #endregion
  // #region Public API
  /**
   * Check if column virtualization is currently active.
   */
  getIsVirtualized() {
    return this.isVirtualized;
  }
  /**
   * Get the current visible column range.
   */
  getVisibleColumnRange() {
    return { start: this.startCol, end: this.endCol };
  }
  /**
   * Scroll the grid to bring a specific column into view.
   * @param columnIndex - Index of the column to scroll to
   */
  scrollToColumn(t) {
    const e = this.columnOffsets[t] ?? 0, i = this.grid;
    i.scrollLeft = e;
  }
  /**
   * Get the left offset for a specific column.
   * @param columnIndex - Index of the column
   */
  getColumnOffset(t) {
    return this.columnOffsets[t] ?? 0;
  }
  /**
   * Get the total width of all columns.
   */
  getTotalWidth() {
    return this.totalWidth;
  }
  // #endregion
}
export {
  E as ColumnVirtualizationPlugin
};
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