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Viewing file:     AtomicBlockUtils.js (5.17 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';

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

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

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

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

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

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

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

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

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

var Immutable = require("immutable");

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

var experimentalTreeDataSupport = gkx('draft_tree_data_support');
var ContentBlockRecord = experimentalTreeDataSupport ? ContentBlockNode : ContentBlock;
var List = Immutable.List,
    Repeat = Immutable.Repeat;
var AtomicBlockUtils = {
  insertAtomicBlock: function insertAtomicBlock(editorState, entityKey, character) {
    var contentState = editorState.getCurrentContent();
    var selectionState = editorState.getSelection();
    var afterRemoval = DraftModifier.removeRange(contentState, selectionState, 'backward');
    var targetSelection = afterRemoval.getSelectionAfter();
    var afterSplit = DraftModifier.splitBlock(afterRemoval, targetSelection);
    var insertionTarget = afterSplit.getSelectionAfter();
    var asAtomicBlock = DraftModifier.setBlockType(afterSplit, insertionTarget, 'atomic');
    var charData = CharacterMetadata.create({
      entity: entityKey
    });
    var atomicBlockConfig = {
      key: generateRandomKey(),
      type: 'atomic',
      text: character,
      characterList: List(Repeat(charData, character.length))
    };
    var atomicDividerBlockConfig = {
      key: generateRandomKey(),
      type: 'unstyled'
    };

    if (experimentalTreeDataSupport) {
      atomicBlockConfig = _objectSpread({}, atomicBlockConfig, {
        nextSibling: atomicDividerBlockConfig.key
      });
      atomicDividerBlockConfig = _objectSpread({}, atomicDividerBlockConfig, {
        prevSibling: atomicBlockConfig.key
      });
    }

    var fragmentArray = [new ContentBlockRecord(atomicBlockConfig), new ContentBlockRecord(atomicDividerBlockConfig)];
    var fragment = BlockMapBuilder.createFromArray(fragmentArray);
    var withAtomicBlock = DraftModifier.replaceWithFragment(asAtomicBlock, insertionTarget, fragment);
    var newContent = withAtomicBlock.merge({
      selectionBefore: selectionState,
      selectionAfter: withAtomicBlock.getSelectionAfter().set('hasFocus', true)
    });
    return EditorState.push(editorState, newContent, 'insert-fragment');
  },
  moveAtomicBlock: function moveAtomicBlock(editorState, atomicBlock, targetRange, insertionMode) {
    var contentState = editorState.getCurrentContent();
    var selectionState = editorState.getSelection();
    var withMovedAtomicBlock;

    if (insertionMode === 'before' || insertionMode === 'after') {
      var targetBlock = contentState.getBlockForKey(insertionMode === 'before' ? targetRange.getStartKey() : targetRange.getEndKey());
      withMovedAtomicBlock = moveBlockInContentState(contentState, atomicBlock, targetBlock, insertionMode);
    } else {
      var afterRemoval = DraftModifier.removeRange(contentState, targetRange, 'backward');
      var selectionAfterRemoval = afterRemoval.getSelectionAfter();

      var _targetBlock = afterRemoval.getBlockForKey(selectionAfterRemoval.getFocusKey());

      if (selectionAfterRemoval.getStartOffset() === 0) {
        withMovedAtomicBlock = moveBlockInContentState(afterRemoval, atomicBlock, _targetBlock, 'before');
      } else if (selectionAfterRemoval.getEndOffset() === _targetBlock.getLength()) {
        withMovedAtomicBlock = moveBlockInContentState(afterRemoval, atomicBlock, _targetBlock, 'after');
      } else {
        var afterSplit = DraftModifier.splitBlock(afterRemoval, selectionAfterRemoval);
        var selectionAfterSplit = afterSplit.getSelectionAfter();

        var _targetBlock2 = afterSplit.getBlockForKey(selectionAfterSplit.getFocusKey());

        withMovedAtomicBlock = moveBlockInContentState(afterSplit, atomicBlock, _targetBlock2, 'before');
      }
    }

    var newContent = withMovedAtomicBlock.merge({
      selectionBefore: selectionState,
      selectionAfter: withMovedAtomicBlock.getSelectionAfter().set('hasFocus', true)
    });
    return EditorState.push(editorState, newContent, 'move-block');
  }
};
module.exports = AtomicBlockUtils;