That compiles, which is a great step. However, the resulting javascript is
onkeypress="processKeyPress(event.which, F379516302547JMS({'command':
"pressed", 'params':event.which});)"
so it's attempting to execute the F37...
also, I don't know if the semicolon is allowed inside the parens.
Is there a way I can pass the function pointer separate from its params?
On Wed, Feb 24, 2010 at 6:41 PM, Ross Mellgren <dri...@gmail.com> wrote:
> <input type="text" onkeypress={ "processKeyPress(event.which, " +
> jsonCall("pressed", JsRaw("event.which")).toJsCmd + ")" } />
>
> -Ross
>
> On Feb 24, 2010, at 6:38 PM, Rick R wrote:
>
>> That works beautifully, thanks.
>>
>> With regards to using custom javascript functions, I have a function
>> processKeyPress. It's role is to filter key presses, only send events
>> to the server upon certain key presses.
>>
>> I guess the easiest way to handle this would be to pass the function created
>> by:
>> {jsonCall("pressed", JsRaw("event.which")).toJsCmd}
>>
>> into processKeyPress so that it can invoke it if the event.which is
>> the correct type.
>>
>> Unfortunately, I can't come up with a way to describe this in inline XML.
>>
>> <input type="textarea" onkeypress="processKeyPress(event.which,
>> {jsonCall("pressed", JsRaw("event.which")).toJsCmd})"/>
>>
>> leaving out the " causes a parse error.. adding the " cause it to be
>> evaulated as a string.
>>
>> Any ideas?
>>
>>
>>
>> On Wed, Feb 24, 2010 at 2:57 PM, David Pollak
>> <feeder.of.the.be...@gmail.com> wrote:
>>> Rick,
>>>
>>> Here's a simple example:
>>>
>>> import net.liftweb._
>>> import util._
>>> import http._
>>> import js._
>>> import JsCmds._
>>> import JE._
>>> import scala.xml.NodeSeq
>>>
>>> class Evently extends CometActor {
>>>
>>> // handle an incoming JSON event
>>> override def handleJson(in: Any): JsCmd = in match {
>>> case JsonCmd("pressed", _, key, _) => SetHtml("info", <b>You pressed
>>> {key}</b>)
>>> case _ => Noop
>>> }
>>>
>>> def render =
>>> <div>
>>> <span id="info"/> <!-- A place to put stuff -->
>>> {
>>> Script(jsonInCode) // include the JSON callback
>>> }
>>> <input type="text" onkeypress={jsonCall("pressed",
>>> JsRaw("event.which")).toJsCmd}/>
>>> </div>
>>> }
>>>
>>> So, the handleJson message gets called on the server whenever a key is
>>> pressed on the client (this example works in non-IE browsers, but that's
>>> just 'cause I'm using event.which rather than event.keyCode).
>>>
>>> Hope this helps.
>>>
>>> Thanks,
>>>
>>> David
>>>
>>>
>>> On Wed, Feb 24, 2010 at 8:23 AM, Rick R <rick.richard...@gmail.com> wrote:
>>>>
>>>> I have a textarea in which I process onKeyUp and onKeyDown commands.
>>>> The handlers for such things are custom javascript.
>>>> I would like to invoke functions in a Comet LiftActor /
>>>> ListenerManager via these custom javascript functions. Is there
>>>> documentation on the recommended way to do so?
>>>>
>>>> It looks like I will have to define the functions within a render call
>>>> and use the SHtml.ajaxCall function, since the destination url is
>>>> randomized. I am just wondering what would be the idiomatic way to do
>>>> this.
>>>>
>>>> This is for a chat style app which processes/distributes data by the
>>>> keystroke rather than by a line/post command.
>>>>
>>>>
>>>> I'm open to any ideas / alternate suggestions.
>>>>
>>>> Thanks,
>>>> Rick
>>>>
>>>> --
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>>>>
>>>
>>>
>>>
>>> --
>>> Lift, the simply functional web framework http://liftweb.net
>>> Beginning Scala http://www.apress.com/book/view/1430219890
>>> Follow me: http://twitter.com/dpp
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>>>
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>>
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>
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