52 lines
1.9 KiB
JavaScript
52 lines
1.9 KiB
JavaScript
/*
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* Copyright (c) 2016 Alex Yatskov <alex@foosoft.net>
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* Author: Alex Yatskov <alex@foosoft.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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function insertBreakAtPoint(e) {
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var range;
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var textNode;
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var offset;
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if (document.caretPositionFromPoint) {
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range = document.caretPositionFromPoint(e.clientX, e.clientY);
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textNode = range.offsetNode;
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offset = range.offset;
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} else if (document.caretRangeFromPoint) {
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range = document.caretRangeFromPoint(e.clientX, e.clientY);
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textNode = range.startContainer;
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offset = range.startOffset;
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}
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// only split TEXT_NODEs
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if (textNode.nodeType == 3) {
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var replacement = textNode.splitText(offset);
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var br = document.createElement('br');
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textNode.parentNode.insertBefore(br, replacement);
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}
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}
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function onMouseDown(e) {
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insertBreakAtPoint(e);
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}
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window.addEventListener('mousedown', onMouseDown, false);
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