event.returnValue=false; equivalent?

[dehian]

Hi,

i'd like to prevent key pressing when some keys are pressed
in html/javascript i did this like that for example

<input type="text" onkeydown="if(event.keyCode==8)event.returnValue=false;">


how could i do this on an inputtext in OL?

Thanks

[tglines]

Maybe something like this?


<handler name="onkeydown" reference="lz.Keys" args="k">
<![CDATA[
if (k == 13) this.doSomething();
]]>
</handler>

[dehian]

Maybe something like this?


<handler name="onkeydown" reference="lz.Keys" args="k">
<![CDATA[
if (k == 13) this.doSomething();
]]>
</handler>


Thanks but it would better be something like this


<handler name="onkeydown" reference="lz.Keys" args="k">
<![CDATA[
if (k == 8) this.cancelEvent(); //avoid backspace
]]>
</handler>


do you see what i mean?

[tglines]

Maybe you could use the 'pattern' attribute

<inputtext pattern="[a-zA-Z0-9]*" >

but I'm not sure how that would handle the backspace, probable not as you want. Just a guess on my part.

By the way, although the pattern looks like a regexp (and it is), currently only the expression [ ]* enclosing a set of characters or character ranges, preceded by an optional "^", is supported. examples: [0-9]* , [a-zA-Z0-9]*, [^0-9]*.

[dehian]

thanks but it doesn't do the trick
the only way i found was to set attribute enabled to false on keydown and then back to true onkeyup but that's not very clean