48 lines
1.8 KiB
Plaintext
48 lines
1.8 KiB
Plaintext
/**
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* Copyright (c) 2013-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule editOnFocus
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* @format
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* @flow
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*/
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'use strict';
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import type DraftEditor from './DraftEditor.react';
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var EditorState = require('./EditorState');
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var UserAgent = require('fbjs/lib/UserAgent');
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function editOnFocus(editor: DraftEditor, e: SyntheticFocusEvent<>): void {
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var editorState = editor._latestEditorState;
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var currentSelection = editorState.getSelection();
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if (currentSelection.getHasFocus()) {
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return;
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}
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var selection = currentSelection.set('hasFocus', true);
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editor.props.onFocus && editor.props.onFocus(e);
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// When the tab containing this text editor is hidden and the user does a
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// find-in-page in a _different_ tab, Chrome on Mac likes to forget what the
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// selection was right after sending this focus event and (if you let it)
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// moves the cursor back to the beginning of the editor, so we force the
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// selection here instead of simply accepting it in order to preserve the
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// old cursor position. See https://crbug.com/540004.
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// But it looks like this is fixed in Chrome 60.0.3081.0.
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// Other browsers also don't have this bug, so we prefer to acceptSelection
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// when possible, to ensure that unfocusing and refocusing a Draft editor
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// doesn't preserve the selection, matching how textareas work.
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if (UserAgent.isBrowser('Chrome < 60.0.3081.0')) {
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editor.update(EditorState.forceSelection(editorState, selection));
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} else {
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editor.update(EditorState.acceptSelection(editorState, selection));
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}
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}
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module.exports = editOnFocus; |