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Viewing file:     editOnCut.js (2.1 KB)      -rw-r--r--

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 * 
 * @emails oncall+draft_js
 */
'use strict';

var DraftModifier = require("./DraftModifier");

var EditorState = require("./EditorState");

var Style = require("fbjs/lib/Style");

var getFragmentFromSelection = require("./getFragmentFromSelection");

var getScrollPosition = require("fbjs/lib/getScrollPosition");

var isNode = require("./isInstanceOfNode");
/**
 * On `cut` events, native behavior is allowed to occur so that the system
 * clipboard is set properly. This means that we need to take steps to recover
 * the editor DOM state after the `cut` has occurred in order to maintain
 * control of the component.
 *
 * In addition, we can keep a copy of the removed fragment, including all
 * styles and entities, for use as an internal paste.
 */


function editOnCut(editor, e) {
  var editorState = editor._latestEditorState;
  var selection = editorState.getSelection();
  var element = e.target;
  var scrollPosition; // No selection, so there's nothing to cut.

  if (selection.isCollapsed()) {
    e.preventDefault();
    return;
  } // Track the current scroll position so that it can be forced back in place
  // after the editor regains control of the DOM.


  if (isNode(element)) {
    var node = element;
    scrollPosition = getScrollPosition(Style.getScrollParent(node));
  }

  var fragment = getFragmentFromSelection(editorState);
  editor.setClipboard(fragment); // Set `cut` mode to disable all event handling temporarily.

  editor.setMode('cut'); // Let native `cut` behavior occur, then recover control.

  setTimeout(function () {
    editor.restoreEditorDOM(scrollPosition);
    editor.exitCurrentMode();
    editor.update(removeFragment(editorState));
  }, 0);
}

function removeFragment(editorState) {
  var newContent = DraftModifier.removeRange(editorState.getCurrentContent(), editorState.getSelection(), 'forward');
  return EditorState.push(editorState, newContent, 'remove-range');
}

module.exports = editOnCut;