diff options
| -rw-r--r-- | content.js | 71 |
1 files changed, 37 insertions, 34 deletions
@@ -1,50 +1,53 @@ /* - * Copyright (c) 2016 Alex Yatskov <alex@foosoft.net> + * Copyright (C) 2016 Alex Yatskov <alex@foosoft.net> * Author: Alex Yatskov <alex@foosoft.net> * - * Permission is hereby granted, free of charge, to any person obtaining a copy of - * this software and associated documentation files (the "Software"), to deal in - * the Software without restriction, including without limitation the rights to - * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of - * the Software, and to permit persons to whom the Software is furnished to do so, - * subject to the following conditions: + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS - * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR - * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER - * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. */ -function insertBreakAtPoint(e) { - var range; - var textNode; - var offset; - - if (document.caretPositionFromPoint) { - range = document.caretPositionFromPoint(e.clientX, e.clientY); - textNode = range.offsetNode; - offset = range.offset; - } else if (document.caretRangeFromPoint) { - range = document.caretRangeFromPoint(e.clientX, e.clientY); - textNode = range.startContainer; - offset = range.startOffset; + +function getRangeAtCursor(e, lookAhead) { + const range = document.caretRangeFromPoint(e.clientX, e.clientY); + if (range === null) { + return null } - // only split TEXT_NODEs - if (textNode.nodeType == 3) { - var replacement = textNode.splitText(offset); - var br = document.createElement('br'); - textNode.parentNode.insertBefore(br, replacement); + const node = range.startContainer; + if (node.nodeType !== 3 /* TEXT_NODE */) { + return null; } + + const offset = range.startOffset; + const length = Math.min(node.length - offset, lookAhead); + + range.setEnd(node, offset + length); + return range; } function onMouseDown(e) { - insertBreakAtPoint(e); + const range = getRangeAtCursor(e, 20); + if (range === null) { + return; + } + + const selection = window.getSelection(); + selection.removeAllRanges(); + selection.addRange(range); + + e.preventDefault(); + + console.log(range.toString()); } |