// src/tabs/tabs-keyboard-delegate.ts
var TabsKeyboardDelegate = class {
  collection;
  direction;
  orientation;
  constructor(collection, direction, orientation) {
    this.collection = collection;
    this.direction = direction;
    this.orientation = orientation;
  }
  flipDirection() {
    return this.direction() === "rtl" && this.orientation() === "horizontal";
  }
  getKeyLeftOf(key) {
    if (this.flipDirection()) {
      return this.getNextKey(key);
    }
    if (this.orientation() === "horizontal") {
      return this.getPreviousKey(key);
    }
    return void 0;
  }
  getKeyRightOf(key) {
    if (this.flipDirection()) {
      return this.getPreviousKey(key);
    }
    if (this.orientation() === "horizontal") {
      return this.getNextKey(key);
    }
    return void 0;
  }
  getKeyAbove(key) {
    if (this.orientation() === "vertical") {
      return this.getPreviousKey(key);
    }
    return void 0;
  }
  getKeyBelow(key) {
    if (this.orientation() === "vertical") {
      return this.getNextKey(key);
    }
    return void 0;
  }
  getFirstKey() {
    let key = this.collection().getFirstKey();
    if (key == null) {
      return;
    }
    const item = this.collection().getItem(key);
    if (item?.disabled) {
      key = this.getNextKey(key);
    }
    return key;
  }
  getLastKey() {
    let key = this.collection().getLastKey();
    if (key == null) {
      return;
    }
    const item = this.collection().getItem(key);
    if (item?.disabled) {
      key = this.getPreviousKey(key);
    }
    return key;
  }
  getNextKey(key) {
    let nextKey = key;
    let nextItem;
    do {
      nextKey = this.collection().getKeyAfter(nextKey) ?? this.collection().getFirstKey();
      if (nextKey == null) {
        return;
      }
      nextItem = this.collection().getItem(nextKey);
      if (nextItem == null) {
        return;
      }
    } while (nextItem.disabled);
    return nextKey;
  }
  getPreviousKey(key) {
    let previousKey = key;
    let previousItem;
    do {
      previousKey = this.collection().getKeyBefore(previousKey) ?? this.collection().getLastKey();
      if (previousKey == null) {
        return;
      }
      previousItem = this.collection().getItem(previousKey);
      if (previousItem == null) {
        return;
      }
    } while (previousItem.disabled);
    return previousKey;
  }
};

export {
  TabsKeyboardDelegate
};