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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 (function() { | 5 (function() { |
6 | 6 |
7 var middleButtonMouseDownTarget = null; | 7 var middleButtonMouseDownTarget = null; |
8 | 8 |
9 document.addEventListener('mousedown', function(e) { | 9 document.addEventListener('mousedown', function(e) { |
10 if (e.button == 1) | 10 if (e.button == 1) |
11 middleButtonMouseDownTarget = e.path[0]; | 11 middleButtonMouseDownTarget = e.path[0]; |
12 }, true); | 12 }, true); |
13 | 13 |
14 document.addEventListener('mouseup', function(e) { | 14 document.addEventListener('mouseup', function(e) { |
15 if (e.button != 1) | 15 if (e.button != 1) |
16 return; | 16 return; |
17 | 17 |
18 if (e.path.length > 0 && e.path[0] == middleButtonMouseDownTarget) | 18 if (e.path.length > 0 && e.path[0] == middleButtonMouseDownTarget) |
19 middleButtonMouseDownTarget.dispatchEvent(new MouseEvent('click', e)); | 19 middleButtonMouseDownTarget.dispatchEvent(new MouseEvent('click', e)); |
20 | 20 |
21 middleButtonMouseDownTarget = null; | 21 middleButtonMouseDownTarget = null; |
22 }, true); | 22 }, true); |
23 | 23 |
| 24 window.addEventListener('click', function(e) { |
| 25 if (e.button == 1 && !e.isTrusted) |
| 26 e.preventDefault(); |
| 27 }); |
| 28 |
24 })(); | 29 })(); |
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