- From: Mats Palmgren <notifications@github.com>
- Date: Wed, 03 Apr 2019 15:33:24 -0700
- To: w3c/clipboard-apis <clipboard-apis@noreply.github.com>
- Cc: Subscribed <subscribed@noreply.github.com>
Received on Wednesday, 3 April 2019 22:33:46 UTC
No, it should **not** be `document.activeElement`. It should be `Selection.focusNode`. The reason is that you can have an activeElement without a selection, and these commands (Copy etc) _operates on the selection_ by [definition](https://w3c.github.io/clipboard-apis/#clipboard-event-copy). [Here's a simple testcase](https://bug1541572.bmoattachments.org/attachment.cgi?id=9055632) to demonstrate this. Firefox and Chrome both prints:
```
Current selection is
Selection { anchorNode: null, anchorOffset: 0, focusNode: null, focusOffset: 0, isCollapsed: true, rangeCount: 0, type: "None", caretBidiLevel: 0 }
Current activeElement is
<div id="playground1" class="playground" tabindex="0">
Got copy event, target is
<body>
```
That said, `document.activeElement` and `Selection.focusNode` are usually the same node, but there are cases when they are not, e.g. when the Selection has been modified by JS or when activeElement was set by a user gesture and CSS `user-select:none` prevented it from being selected (as intended).
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Received on Wednesday, 3 April 2019 22:33:46 UTC