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keyboard shortcut for "delete" key

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FParsons

keyboard shortcut for "delete" key

Hi! I have a repeat where I'd like to have the user be able to use the "delete" key to remove the current item.

I looked at this:
http://wiki.orbeon.com/forms/doc/developer-guide/xforms-events#TOC-Creating-keyboard-shortcuts
and this:
http://www.w3.org/TR/2003/NOTE-DOM-Level-3-Events-20031107/keyset.html
which specifies :"U+007F" The Delete (Del) Key.

...but I'm not sure from this what the final action should look like.

Any help with this is appreciated!

-- Francis

FParsons

Re: keyboard shortcut for "delete" key

anyone?

-- Francis

Alessandro Vernet

Re: keyboard shortcut for "delete" key

Administrator

In reply to this post by FParsons

Francis,

You would put an event handler that reacts to users pressing that key,
and run the <xforms:delete> pointing to the current item, using the
index() function. I have never tried catching the delete key, so keep
in mind that the browser might "eat" that key and not make it
available to your form. I would first try with ctrl-y (as in the
example on the wiki), just to make sure that your action runs and does
what you want. Then you can try changing the key code.

Alex

On Sun, Jun 6, 2010 at 5:40 PM, FParsons <[hidden email]> wrote:

>
> Hi! I have a repeat where I'd like to have the user be able to use the
> "delete" key to remove the current item.
>
> I looked at this:
> http://wiki.orbeon.com/forms/doc/developer-guide/xforms-events#TOC-Creating-keyboard-shortcuts
> and this:
> http://www.w3.org/TR/2003/NOTE-DOM-Level-3-Events-20031107/keyset.html
> which specifies :"U+007F" The Delete (Del) Key.
>
> ...but I'm not sure from this what the final action should look like.
>
> Any help with this is appreciated!
>
> -----
> -- Francis
> --
> View this message in context: http://orbeon-forms-ops-users.24843.n4.nabble.com/keyboard-shortcut-for-delete-key-tp2245374p2245374.html
> Sent from the Orbeon Forms (ops-users) mailing list archive at Nabble.com.
>
>
> --
> You receive this message as a subscriber of the [hidden email] mailing list.
> To unsubscribe: mailto:[hidden email]
> For general help: mailto:[hidden email]?subject=help
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>
>

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FParsons

Re: keyboard shortcut for "delete" key

Alex - thanks for the reply.

It does work with ev:event="keypress" ev:observer="#document" xxforms:modifiers="Control" xxforms:text="x".

But what I want to do is to have a keypress combination be able to remove a repeat item only when that repeat has the focus. Is this possible? If it is possible, would I still be able to use it with a repeat that has a nested repeat, as long as the nested repeat has a different keypress combination?

BTW, I did try using the keypress "CTL + D" in IE 7, and IE responded with it's mapping ("save bookmark dialog"), and then the form with it's mapping. So I guess you just have to steer clear of any shortcuts already taken by the browser.

I found that the keypress code for the delete key is U+007F. Although this probably wouldn't work anyway (in IE), is it possible to use the keypress codes (maybe for something like "CTL + Delete" or "CTRL + up-arrow") so we can use special keys?

-- Francis

Alessandro Vernet

Re: Re: keyboard shortcut for "delete" key

Administrator

Francis,

You're bringing up some good points:

* You have to make sure you're using a key combination that browsers
don't intercept. So you might want to test it on a few browser / OS
combinations, to check that the combination you picked.
* You can have the listener work on items in a repeat. But it will
only work when one of the controls in the repeat has the focus. To do
this just put the event handler inside an <xforms:group> which is
around the <xforms:repeat>.
* At this point you can only have plain characters in
xxforms:text="...". If we continue borrowing from XBL, we could
support the key attribute (http://www.w3.org/TR/xbl/#the-handler),
which would allow you listen on specific keys. Then any value defined
in http://www.w3.org/TR/DOM-Level-3-Events/#keyset-keyidentifiers
could be used there. This isn't supported at this point, so you are
constraint to using just "regular" alphanumeric characters.

Alex

On Fri, Jun 25, 2010 at 9:16 AM, FParsons <[hidden email]> wrote:

>
> Alex - thanks for the reply.
>
> It does work with ev:event="keypress" ev:observer="#document"
> xxforms:modifiers="Control" xxforms:text="x".
>
> But what I want to do is to have a keypress combination be able to remove a
> repeat item only when that repeat has the focus. Is this possible? If it is
> possible, would I still be able to use it with a repeat that has a nested
> repeat, as long as the nested repeat has a different keypress combination?
>
> BTW, I did try using the keypress "CTL + D" in IE 7, and IE responded with
> it's mapping ("save bookmark dialog"), and then the form with it's mapping.
> So I guess you just have to steer clear of any shortcuts already taken by
> the browser.
>
> I found that the keypress code for the delete key is U+007F. Although this
> probably wouldn't work anyway (in IE), is it possible to use the keypress
> codes (maybe for something like "CTL + Delete" or "CTRL + up-arrow") so we
> can use special keys?
>
>
>
> -----
> -- Francis
> --
> View this message in context: http://orbeon-forms-ops-users.24843.n4.nabble.com/keyboard-shortcut-for-delete-key-tp2245374p2268640.html
> Sent from the Orbeon Forms (ops-users) mailing list archive at Nabble.com.
>
>
> --
> You receive this message as a subscriber of the [hidden email] mailing list.
> To unsubscribe: mailto:[hidden email]
> For general help: mailto:[hidden email]?subject=help
> OW2 mailing lists service home page: http://www.ow2.org/wws
>
>

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Follow Orbeon on Twitter: @orbeon
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FParsons

Re: Re: keyboard shortcut for "delete" key

Alex - I tried this in IE 7 (XP x32):

<xforms:group ref="$current-question-item/RESPONSE_MULTICHOICE" id="multichoice-group">
<xforms:action ev:event="keypress" xxforms:modifiers="control" xxforms:text="y">
<xforms:message level="modal">keypress</xforms:message>
</xforms:action>
<xforms:repeat nodeset="MULTICHOICE_ITEM" id="multichoice-item-repeat">
.....

but this doesn't seem to work. This repeat, however, is in a repeat, I'm not sure if that matters.

Any ideas on what could be going on?

-- Francis