Marius,
You asked about the Java version I'm using and why I couldn't run the
Liftbook
example as-is.
My development environment is Eclipse with the scala plugin running
Java 1.6.
I assume I'm always compiling with the latest scala/lift libraries, as
I use maven to
package and run.
I get the following compiler error:
"overloaded method value ajaxButton with alternatives (String,() =>
net.liftweb.http.js.JsCmd,(String, String)*)scala.xml.Elem <and>
(scala.xml.NodeSeq,() => net.liftweb.http.js.JsCmd,(String, String)*)
scala.xml.Elem cannot be applied to
(scala.xml.Text,net.liftweb.http.js.JsCmd) TabMenu.scala sample/src/
main/scala/com/exmbly/scala/sample/snippet Unknown Scala Problem"
Changing the call to
bind("ex", xhtml,
"button" -> SHtml.ajaxButton(Text(Press me), () => ajaxFunc)
does work, however (Press me needs to be quoted. It's not in the
book).
Glenn Silverman
On Apr 16, 6:49 am, David Pollak <feeder.of.the.be...@gmail.com>
wrote:
> On Wed, Apr 15, 2009 at 3:19 PM, glenn <gl...@exmbly.com> wrote:
>
> > Actually, the json example code in the Liftbook works, as long
> > as you change it to read:
>
> > bind("ex", xhtml,
> > "button" -> SHtml.ajaxButton(Text(Press me), () => ajaxFunc)
>
> > But this example uses a simple function, alert, and emits it using
> > JsRaw.
>
> > I would like to see a similar example, but using Jx to emit a
> > javascript function and have it called.
>
> Jx is for generating functions that generate XML on the client side. It's
> for building rich client-side applications.
>
> In the button example, the code being called is on the server side, so the
> client-side code is less relevant.
>
> If you could talk about what you're trying to build, it might be easier to
> discuss things in concrete terms rather than in abstract terms.
>
> Thanks,
>
> David
>
>
>
>
>
> > Glenn Silverman
>
> > On Apr 15, 2:58 pm, glenn <gl...@exmbly.com> wrote:
> > > Marius,
>
> > > I appreciate the reply. Not sure if it helps, though. What's with
> > > (JsVar("items") and why did you use that?
>
> > > The Liftbook is very cryptic on the use of Jx classes. It just says,
>
> > > " If we send this generated JavaScript function to client and calling
> > > it by pass the list variable
> > > above It will create the following document fragment:..."
>
> > > Nothing in the book about how to actually do this.
>
> > > I tried the json example in the book (sec 8.4) and all I got emitted
> > > on the client was:
> > > <button onclick="lift_ajaxHandler('F560600551708Y4K=true', null,
> > > null); return false;">Press me</button>
>
> > > That doesn't do any good. Generated variable names in emitted
> > > javascript aren't much good for referencing in scala classes.
>
> > > The book is wrong by the way. This won't compile.
>
> > > bind("ex", xhtml,
> > > "button" -> SHtml.ajaxButton(Text(Press me), ajaxFunc)
>
> > > You need to do something like this:
>
> > > bind("ex", xhtml,
> > > "button" -> SHtml.ajaxButton(Text(Press me), () => ajaxFunc)
>
> > > Maybe that's why I'm getting 'F560600551708Y4K=true' emitted.
>
> > > I'm beginning to think nobody has actually written code using the Jx
> > > classes
> > > that works.
>
> > > Glenn Silverman
>
> > > On Apr 15, 12:30 pm, "marius d." <marius.dan...@gmail.com> wrote:
>
> > > > How about
>
> > > > 1. Use a decalred variable
>
> > > > JsCrVar("func", Jx(<ul>{
> > > > JxMap(JsVar("it"), Jx(<li><a
> > > > href="">{JsVar("it")}</a></li>))
> > > > }
> > > > </ul>).toJs) & Call("func", JsVar
> > > > ("items"))
>
> > > > 2.
>
> > > > Jx(<ul>{
> > > > JxMap(JsVar("it"), Jx(<li><a href="">{JsVar("it")}</a></li>))
> > > > }</ul>).toJs asInstanceOf[AnonFunc].applied(JsVar("items"))
>
> > > > ... that should just call the anonymous function constructed by Jx
>
> > > > Note that I haven't actaully tested the code but is should work unless
> > > > I'm missing some parentheses etc.
>
> > > > Also Jx is discussed in the LiftBook
>
> > > > Br's,
> > > > Marius
>
> > > > On Apr 15, 9:25 pm, glenn <gl...@exmbly.com> wrote:
>
> > > > > I'm a novice at this, and I've seen discussions of using Jx classes
> > to
> > > > > output HTML on the client, but how exactly is this done? Are there
> > > > > any complete examples of sending JavaScript functions produced by the
> > > > > Jx classes to the client and running them?
>
> > > > > Suppose, for example, I have a json object:
>
> > > > > var list = {
> > > > > tabs: [
> > > > > {class: posts selected},
> > > > > {class: comments},
> > > > > {class: category},
> > > > > {class: famous},
> > > > > {class: random}
> > > > > ]
> > > > > }
>
> > > > > and a function defined so:
>
> > > > > def renderTabs = Jx(<li class='{JsVar("it", "class")}'></li>)
>
> > > > > I then want to create tabs on the client with
>
> > > > > Jx(<ul class="tabMenu">{JxMap(JsVar("it.tabs"), renderTabs)}</ul>)
>
> > > > > How, exactly is this to be done? Obviously, this won't work - the
> > > > > JavaScript function isn't generated:
>
> > > > > def head(xhtml:NodeSeq): NodeSeq = {
>
> > > > > val renderTabs = Jx(<li class='{JsVar("it", "class")}'></li>)
>
> > > > > <head>
> > > > > <script type="text/javascript">
> > > > > Jx(<ul class="tabMenu">{JxMap(JsVar("it.tabs"),
> > > > > renderTabs)}</ul>)
>
> > > > > </script>
> > > > > </head>
> > > > > }
>
> > > > > I see the value in the Jx classes, if only I knew how to use them.
> > > > > Any help would be appreciated
>
> > > > > Glenn Silverman
>
> --
> Lift, the simply functional web frameworkhttp://liftweb.net
> Beginning Scalahttp://www.apress.com/book/view/1430219890
> Follow me:http://twitter.com/dpp
> Git some:http://github.com/dpp
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