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/** * 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 EditorState = require("./EditorState"); var expandRangeToStartOfLine = require("./expandRangeToStartOfLine"); var getDraftEditorSelectionWithNodes = require("./getDraftEditorSelectionWithNodes"); var moveSelectionBackward = require("./moveSelectionBackward"); var removeTextWithStrategy = require("./removeTextWithStrategy"); function keyCommandBackspaceToStartOfLine(editorState, e) { var afterRemoval = removeTextWithStrategy(editorState, function (strategyState) { var selection = strategyState.getSelection(); if (selection.isCollapsed() && selection.getAnchorOffset() === 0) { return moveSelectionBackward(strategyState, 1); } var ownerDocument = e.currentTarget.ownerDocument; var domSelection = ownerDocument.defaultView.getSelection(); // getRangeAt can technically throw if there's no selection, but we know // there is one here because text editor has focus (the cursor is a // selection of length 0). Therefore, we don't need to wrap this in a // try-catch block. var range = domSelection.getRangeAt(0); range = expandRangeToStartOfLine(range); return getDraftEditorSelectionWithNodes(strategyState, null, range.endContainer, range.endOffset, range.startContainer, range.startOffset).selectionState; }, 'backward'); if (afterRemoval === editorState.getCurrentContent()) { return editorState; } return EditorState.push(editorState, afterRemoval, 'remove-range'); } module.exports = keyCommandBackspaceToStartOfLine;
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