It probably depends if you want to use this for text input or "action"
inputs. A text-to-speech extension would probably want to set unicode
characters, while something that (say) hits cmd-f to open the find bar
probably wants to use keycodes.
For example, on OS X hitting cmd-"f" with a hiragana keyboard layout
opens the findbar, while just pressing "f" opens an IME.
If you want to use this for actons, I would find it more useful to
have a "performUiAction()" function instead though, since keyboard
shortcuts are different across platforms (all mac shortcuts use cmd
instead of ctrl for example, and the letters for a few shortcuts are
different on OS X too for various reasons).
On Thu, Jan 14, 2010 at 7:26 AM, Dominic Mazzoni <dmazz...@google.com> wrote:
> Hi Darin,
>
> Erik suggested you might have some thoughts. In my proposed extension
> api for accessibility (http://codereview.chromium.org/402099) one of
> the functions is to simulate a key press. How should the client
> express the key they would like to press? The current proposed
> function prototype is:
>
> {
> "name": "simulateKeyPress",
> "type": "function",
> "description": "Simulate pressing a key.",
> "parameters": [
> {
> "type": "object",
> "name": "keyInfo",
> "properties": {
> "key": {"type": "integer", "description": "The code of
> the key to press, corresponding to event.keyCode."},
> "control": {"type": "boolean", "optional": true,
> "description": "True if the control key is down."},
> "shift": {"type": "boolean", "optional": true,
> "description": "True if the shift key is down."},
> "alt": {"type": "boolean", "optional": true,
> "description": "True if the alt key is down."}
> }
> }
> ]
> }
>
> What do you think? Should the key be a keyCode? A charCode?
>
> Should it be cross-platform, or should it match what would be returned
> by an onKeyDown handler? Are those even mutually exclusive?
>
> My current thinking is: the symmetry of using the same key codes
> returned by onKeyDown is appealing. Also, even though there are some
> differences, the most common keys needed to automate the UI (tab,
> enter, arrows, alphanumerics) are already consistent across platforms.
>
> Thanks,
> - Dominic
>
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