/* * Copyright (C) 2016 Alex Yatskov <alex@foosoft.net> * Author: Alex Yatskov <alex@foosoft.net> * * 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. * * 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. * * 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 getRangeAtCursor(e, lookAhead) { const range = document.caretRangeFromPoint(e.clientX, e.clientY); if (range === null) { return null; } 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) { // e.preventDefault(); const range = getRangeAtCursor(e, 20); if (range === null) { return; } const selection = window.getSelection(); selection.removeAllRanges(); selection.addRange(range); findTerm(range.toString(), response => { console.log(response); }); } window.addEventListener('mousedown', onMouseDown, false);