?? nested.txt
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Date: Tue, 21 Mar 2006 19:17:08 +0100
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Subject: [dwr-user] Re: nested properties read/write
Hi,
I did something for mapped properties.
The code had catalan variable names. I translated it a bit to english.
Hope it's understandable.
I have a function that builds up a javascript object with all the
elements in the page:
function buildObject()
{
var obj;
var controls;
var i;
obj = new Object();
controls = document.getElementsByTagName("INPUT");
for (i=0;i<controls.length;i++)
{
if ((controls[i].name!=null) && (controls[i].name!=""))
{
obj[controls[i].name] =
(controls[i].type.toLowerCase()!="checkbox") ? controls[i].value :
controls[i].checked;
}
}
controls = document.getElementsByTagName("SELECT");
for (i=0;i<controls.length;i++)
{
if ((controls[i].name!=null) && (controls[i].name!=""))
{
obj[controls[i].name] = controls[i].value;
}
}
controls = document.getElementsByTagName("TEXTAREA");
for (i=0;i<controls.length;i++)
{
if ((controls[i].name!=null) && (controls[i].name!=""))
{
obj[controls[i].name] = controls[i].value;
}
}
return(obj);
}
To set a property:
function setPropety(obj, propName, value)
{
var nom1,nom2;
if (propName)
{
if (propName.indexOf("(")>=0)
{
nom1 = propName.substring(0,propName.indexOf("("));
nom2 =
propName.substring(propName.indexOf("(")+1,propName.indexOf(")"))+propNamesubstring(propName.indexOf(")")+1);
this.setPropietat(obj[nom1],
nom2,
value);
}
else
{
obj[propName] = value;
}
}
}
To get it:
function getProperty(obj, propName)
{
var valor;
var nom1;
var nom2;
valor = null;
if (propName)
{
if (propName.indexOf("(")>=0)
{
nom1 = propName.substring(0,propName.indexOf("("));
nom2 =
propName.substring(propName.indexOf("(")+1,propName.indexOf(")"))+propName.substring(propName.indexOf(")")+1);
//Let's get sure that the property exists
if (!obj[nom1])
{
obj[nom1] = new Object();
}
valor = this.getProperty(obj[nom1],
nom2);
}
else
{
//Let's get sure that the property exists
if (!obj[propName])
{
obj[propName] = null;
}
valor = obj[propName];
}
}
return(valor);
}
in the html you should have:
<input type="text" id="bar(bar1)" >
like the struts way for map backed properties.
then, in javascript:
obj = buildObject();
setProperty(obj,"bar(bar1)",value_you_want);
alert(getProperty(obj,"bar(bar1)"));
I think it would be nice to extend the functionality to vector mapped
properties and subproperties and adding it to the standard dwr, isn't
it, Joe?
;-)
>
> ------------------------------------------------------------------------
>
> Assumpte:
> nested properties read/write
> De:
> Lovkiy Slava <lovkiys@yahoo.com>
> Data:
> Mon, 20 Mar 2006 07:41:27 -0800 (PST)
> Per a:
> users@dwr.dev.java.net
>
> Per a:
> users@dwr.dev.java.net
>
>
> Hi,
>
> Did anyone come up with good algorithm how we can use
> DWRUtil.getValues()/setValues() to work with nested
> properties on page?
>
> Say, we have an object:
> ----------------------
> var someObject = {
> foo : 10;
> bar : {
> bar1 : "some value";
> bar2 : 123;
> }
> }
> ----------------------
>
>
> and fields on form like:
> ------------------------------
> <input type="text" id="foo">
> <input type="text" id="bar.bar1">
> <input type="text" id="bar.bar2">
> ----------------------------------
>
> I call DWRUtils.setValues(someObject) and it should
> automaticly populate all those nested properties
> "bar.bar1" and "bar.bar2"
>
> Any Ideas?
>
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--
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