Yes you understanding is correct.
FocusOnLoad is not an appropriate solution for your particular problem
as -%> and FocusOnLoad operate on two different types which are not
interchangeable due to attributes preservation as you well noticed.
Besides the solution I posted above is similar with what FocusOnLoad
does except that it does the Script append a bit later on.
FocusOnLoad is not really functional well not in the sense of
functional programming :)
There are other approaches of course but would require more coding as
form the NodeSeq produced by FocusOnLoad(Shtml.ajaxText(....)) pattern
match for the Elem you want that add the attributes.
You could of course put the js code that puts the focus on your field
right in your template in the <script> tag and this would require no
Scala code for it. you code would simply be
bind("ajax", xhtml,
"searchBox" -%> SHtml.ajaxText("", q => SetHtml("resultz",
Yawni.query(q)))
)
and in your template
<script type="text/javascript">
$(document).ready(function() {
$("#myfield").focus();
});
</script>
On 6 mar., 23:56, Luke Nezda <lne...@gmail.com> wrote:
> Hi, Marius -
>
> Ok, I think I catch the drift of your solution. You said:
>
> bind("ajax", xhtml,
> "searchBox" -%> SHtml.ajaxText("", q => SetHtml("resultz",
> Yawni.query(q))
> ) ++ Script(JqOnLoad(SetValueAndFocus("myfield", "")))
>
> which is missing a paren -- I think you meant:
>
> bind("ajax", xhtml,
> "searchBox" -%> SHtml.ajaxText("", q => SetHtml("resultz",
> Yawni.query(q)))
> ) ++ Script(JqOnLoad(SetValueAndFocus("myfield", "")))
>
> The gist of your solution is to append a Script (which references the
> ajaxText <input> element by a manually introduced id) onto the NodeSeq
> returned by bind() right ?
>
> It works, and I appreciate your assistance, though it seems a shame to
> have to give up the slick, functional FocusOnLoad wrapper, add an id,
> and bolt this onto the end.
>
> Thanks,
> - Luke
>
> On Mar 6, 2:39 pm, Marius <marius.dan...@gmail.com> wrote:
>
>
>
> > You could also do it like this:
>
> > bind("ajax", xhtml,
> > "searchBox" -%> SHtml.ajaxText("", q => SetHtml("resultz",
> > Yawni.query(q))
> > ) ++ Script(JqOnLoad(SetValueAndFocus("myfield", "")))
>
> > SetValueAndFocus is already in JqJsCmds but it really should in in
> > JsCmds as it does not depend on JQuery.
>
> > On Mar 6, 10:10 pm, Marius <marius.dan...@gmail.com> wrote:
>
> > > Ahh sorry for not posting this earlier.
>
> > > Assume you know the id of your text box (say myfield) and you're using
> > > JQuery.
>
> > > import net.liftweb.http.js.jquery._
>
> > > bind("ajax", xhtml,
> > > "searchBox" -%> SHtml.ajaxText("", q => SetHtml("resultz",
> > > Yawni.query(q))
> > > ) ++ Script(JqOnLoad(JqFocus("myfield")))
>
> > > where:
>
> > > object JqFocus {
> > > def apply(id : String) = JqId(id) >> new JsExp with JQueryRight {
> > > def toJsCmd = "focus()"
> > > }
> > > }
>
> > > I can add JqFocus to Lift tomorrow (by opening a ticket) but could you
> > > please try it first?
>
> > > Br's,
> > > Marius
>
> > > On Mar 6, 9:00 pm, Luke Nezda <lne...@gmail.com> wrote:
>
> > > > Marius -
>
> > > > First, thank you for your time! (sorry for the accidental double
> > > > response post - browser fail :))
>
> > > > Ok, so below is my current "solution". What I don't understand is how
> > > > to avoid hard coding the attributes when constructing the
> > > > SHtml.ajaxText AND getting that ajaxText's <input> to FocusOnLoad. I
> > > > understand how to leave off the parameter for doSearch (fixed below --
> > > > you're totally right, that was spurious) and I understand that passing
> > > > through attributes to a whole NodeSeq doesn't make much sense. What
> > > > I'm wondering is if there's some way of achieving both: FocusOnLoad &
> > > > attribute pass through -- maybe a nested bind or something?
>
> > > > Thanks again,
> > > > - Luke
>
> > > > // get FocusOnLoad, hard code attributes
> > > > object AjaxWithFocusOnLoad extends DispatchSnippet {
> > > > override def dispatch = {
> > > > case "searchField" => searchField
> > > > }
> > > > // searchField closure
> > > > def searchField(xhtml: NodeSeq): NodeSeq = {
> > > > // build up an ajax text box
> > > > def doSearch:NodeSeq = {
> > > > FocusOnLoad(SHtml.ajaxText("", q => SetHtml("resultz",
> > > > Yawni.query(q)), ("size","30"), ("tabindex", "1"), ("type",
> > > > "search")))
> > > > }
> > > > // bind the view to the functionality
> > > > bind("ajax", xhtml,
> > > > "searchBox" -> doSearch
> > > > )
> > > > }
>
> > > > }
>
> > > > // ditch FocusOnLoad functionality, take advantage of attribute pass
> > > > through
> > > > object AjaxWithAttributePassThrough extends DispatchSnippet {
> > > > override def dispatch = {
> > > > case "searchField" => searchField
> > > > }
> > > > // searchField closure
> > > > def searchField(xhtml: NodeSeq): NodeSeq = {
> > > > // build up an ajax text box
> > > > def doSearch:Elem = {
> > > > //FocusOnLoad(SHtml.ajaxText("", q => SetHtml("resultz",
> > > > Yawni.query(q)), ("size","30"), ("tabindex", "1"), ("type",
> > > > "search")))
> > > > // kill FocusOnLoad functionality, take advantage of attribute
> > > > pass through in bind below
> > > > SHtml.ajaxText("", q => SetHtml("resultz", Yawni.query(q)))
> > > > }
> > > > // bind the view to the functionality
> > > > bind("ajax", xhtml,
> > > > //"searchBox" -> doSearch
> > > > // use attribute pass through variant
> > > > "searchBox" -%> doSearch
> > > > )
> > > > }
>
> > > > }
>
> > > > On Mar 6, 10:57 am, Marius <marius.dan...@gmail.com> wrote:
>
> > > > > In the short term you would solve it as I suggested:
>
> > > > > Use in your bind
>
> > > > > "searchBox" -%> doSearch
>
> > > > > and define your doSearch as:
>
> > > > > def doSearch: NodeSeq = {
> > > > > ... do your stuff here
>
> > > > > }
>
> > > > > Actually thinking more into it there is a good reason for -%> to not
> > > > > have a (NodeSeq) => NodeSeq support. -%> means that it preserves the
> > > > > attributes specified in the template to the resulting node.But having
> > > > > a bunch of attributes we can't apply them to a NodeSeq because aa
> > > > > NodeSeq means a sequence of Nodes with no commn parent so we can;t
> > > > > determine to which node we'd apply those attributes. AFAIK only an
> > > > > Elem can have attributes.
>
> > > > > On Mar 6, 6:45 pm, Luke Nezda <lne...@gmail.com> wrote:
>
> > > > > > Thanks for responding Marius. You're right, my doSearch method
> > > > > > doesn't need the msg parameter -- that was just an artifact of
> > > > > > transforming an example (removed now). As far as my specific
> > > > > > issue, I
> > > > > > guess you're saying the best solution is for the framework to add
> > > > > > overload def -%>(in: NodeSeq => NodeSeq) congruent with -> --
> > > > > > should I
> > > > > > file a feature request? As you said, Group(FocusOnLoad...) doesn't
> > > > > > compile either because it returns a Node, not the currently required
> > > > > > Element. Did I misunderstand?
>
> > > > > You are correct. I mainly pointed to Group just as a reminder as it
> > > > > can be useful to "aggregate" nodes. It wont work in your case.
>
> > > > > In the short term how would you solve
>
> > > > > > this ?
>
> > > > > > Thanks,
> > > > > > - Luke
>
> > > > > > On Mar 6, 1:39 am, Marius <marius.dan...@gmail.com> wrote:
>
> > > > > > > On 22 feb., 04:12, Luke Nezda <lne...@gmail.com> wrote:
>
> > > > > > > > Hello,
>
> > > > > > > > I am new to Scala and Lift. I am having a problem using 2
> > > > > > > > features
> > > > > > > > together which seem to work fine individually. Here's a
> > > > > > > > simplified
> > > > > > > > piece of the code:
>
> > > > > > > > class Ajax {
> > > > > > > > def someResult(q:String) = <span>some results for query
> > > > > > > > {q}...</
> > > > > > > > span>
> > > > > > > > // searchField closure
> > > > > > > > def searchField(xhtml: NodeSeq): NodeSeq = {
> > > > > > > > // build up an ajax text box
> > > > > > > > def doSearch(msg: NodeSeq) = {
> > > > > > > > // doesn't compile with bind: "searchBox" -%> doSearch _
> > > > > > > > FocusOnLoad(SHtml.ajaxText("", q => SetHtml("resultz",
> > > > > > > > someResult(q))))
> > > > > > > > // compiles with bind: "searchBox" -%> doSearch _
> > > > > > > > // SHtml.ajaxText("", q => SetHtml("resultz",
> > > > > > > > someResult(q)))
> > > > > > > > }
> > > > > > > > // bind the view to the functionality
> > > > > > > > bind("ajax", xhtml,
> > > > > > > > "searchBox" -> doSearch _
> > > > > > > > // doesn't compile if doSearch returns result of
> > > > > > > > FocusOnLoad
> > > > > > > > //"searchBox" -%> doSearch _
> > > > > > > > )
> > > > > > > > }
>
> > > > > > > > }
>
> > > > > > > > and the template invocation:
>
> > > > > > > > <lift:surround with="default" at="content">
> > > > > > > > <lift:Ajax.searchField id_msgs="messages">
> > > > > > > > <ajax:searchBox class="text" type="search" tabindex="1" />
> > > > > > > > <hr class="space"/>
> > > > > > > > <div id="resultz"></div>
> > > > > > > > <div id="messages"></div>
> > > > > > > > </lift:Ajax.searchField>
> > > > > > > > </lift:surround>
>
> > > > > > > > My goal is an Ajax-enabled text input that gets focus when the
> > > > > > > > page
> > > > > > > > loads and has various attributes of the input element set. I
> > > > > > > > realize
> > > > > > > > I can use the SHtml.ajaxText variant that takes attribute-value
> > > > > > > > pairs,
> > > > > > > > as in:
>
> > > > > > > > FocusOnLoad(SHtml.ajaxText("", q => SetHtml("resultz",
> > > > > > > > Yawni.query(q)), ("class", "text"), ("type", "search"),
> > > > > > > > ("tabindex",
> > > > > > > > "1")))
>
> > > > > > > > but I'm trying to keep the various element attributes in the
> > > > > > > > template.
>
> > > > > > > > When I try to bind with:
> > > > > > > > "searchBox" -%> doSearch _
> > > > > > > > instead of:
> > > > > > > > "searchBox" -> doSearch _
>
> > > > > > > > I get the following compile error:
>
> > > > > > > > snippet/Ajax.scala:109: error: overloaded method value -%> with
> > > > > > > > alternatives ((scala.xml.NodeSeq) =>
> > > > > > > > scala.xml.Elem)net.liftweb.util.Helpers.FuncBindParam <and>
> > > > > > > > (Option[scala.xml.Elem])net.liftweb.util.Helpers.FuncBindParam
> > > > > > > > <and>
> > > > > > > > (net.liftweb.common.Box[scala.xml.Elem])net.liftweb.util.Helpers.FuncBindPa
> > > > > > > > ram
> > > > > > > > <and> (scala.xml.Elem)net.liftweb.util.Helpers.FuncBindParam
> > > > > > > > cannot be
> > > > > > > > applied to ((scala.xml.NodeSeq) => scala.xml.NodeSeq)
> > > > > > > > "searchBox" -%> doSearch _
> > > > > > > > ^
> > > > > > > > one error found
>
> > > > > > > Why your doSearch function takes a msg parameter? ... it doesn't
> > > > > > > seam
> > > > > > > to use it.
>
> > > > > > > doSearch _ is a partially applied function and acts as a
> > > > > > > (NodeSeq) =>
> > > > > > > NodeSeq however -%> has only a definition like:
>
> > > > > > > def -%>(in: NodeSeq => Elem)
>
> > > > > > > while -> also has
>
> > > > > > > def ->(in: NodeSeq => NodeSeq)
>
> > > > > > > which is why you get the compile error. We should add the same
>
> ...
>
> citiţi mai multe »
--
You received this message because you are subscribed to the Google Groups
"Lift" group.
To post to this group, send email to lift...@googlegroups.com.
To unsubscribe from this group, send email to
liftweb+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/liftweb?hl=en.
