/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule getDraftEditorSelection
 * @format
 * @flow
 */

'use strict';

import type { DOMDerivedSelection } from './DOMDerivedSelection';
import type EditorState from './EditorState';

var getDraftEditorSelectionWithNodes = require('./getDraftEditorSelectionWithNodes');

/**
 * Convert the current selection range to an anchor/focus pair of offset keys
 * and values that can be interpreted by components.
 */
function getDraftEditorSelection(editorState: EditorState, root: HTMLElement): DOMDerivedSelection {
  var selection = global.getSelection();

  // No active selection.
  if (selection.rangeCount === 0) {
    return {
      selectionState: editorState.getSelection().set('hasFocus', false),
      needsRecovery: false
    };
  }

  return getDraftEditorSelectionWithNodes(editorState, root, selection.anchorNode, selection.anchorOffset, selection.focusNode, selection.focusOffset);
}

module.exports = getDraftEditorSelection;