Some selection tests.

1 files changed, 37 insertions, 34 deletions

diff --git a/content.js b/content.js
index 119fce55..9fd77e49 100644
--- a/content.js
+++ b/content.js
@@ -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());
 }