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I have issue with decimalbox OnChanging EventListener. Please see codes below.
My goal is to make sure that the inputevent is working. So on "onEvent" method
I always set the Value to zero However, it only works
during the first input meaning If i input something during first attempt, it is setting my decimalbox
correctly to zero but the next or succeeding input attempt it cannot set the value to zero. If you noticed
in my code I put some testing with background and setting style() is working but the setValue() is not.
Thanks,
*** ZUL SCRIPT ****
<zk>
<separator spacing="20px"/>
<hbox spacing="2em">
<decimalbox use="BoxWeight"/>
</hbox>
</zk>
*** JAVA CODE ***
BoxWeight
public class BoxWeight extends Decimalbox implements EventListener {
private InputEvent ie;
private static Log log = LogFactory.getLog(BoxWeight.class);
private int i=0;
public BoxWeight() {
this.setValue(new BigDecimal(0));
this.addEventListener("onChanging",this);
}
public void onChanging() {
}
public void onEvent(Event arg0) {
if(i==0) {
this.setStyle("background:yellow");
}
if(i==1) {
this.setStyle("background:red");
}
if(i==2) {
this.setStyle("background:blue");
}
this.setValue(new BigDecimal(0));
i++;
}
public boolean isAsap() {
// TODO Auto-generated method stub
return false;
}
When onChanging , the original value of decimalbox doesn't be changed to the changing value(remain on 0 when changing in this case)
So, when you change the value to '0' , there is no update to client since the value doesn't change from component view.
try following code , it should work.
public void onEvent(Event arg0) {
if (i == 0) {
this.setStyle("background:yellow");
}else if (i == 1) {
this.setStyle("background:red");
}else if (i == 2) {
this.setStyle("background:blue");
}else{
this.setValue(new BigDecimal(-1));
this.setValue(new BigDecimal(0));
}
i++;
}
my really concern is that in each input or everytime new input in decimalbox will be evaluated meaning onchanging rather than
onChange. like if user entered "-" or "," it should not be considered but immediately disappeared/removed that
in the decimalbox. I was able to solve my problem using invalidate().
So my workaround is to use invalidate
public void onEvent(Event arg0) {
ie = (InputEvent)arg0;
evaluateDecimalBox(this,ie.getValue());
}
public String evaluateDecimalBox(Decimalbox aComp,String aValue) {
if( (aValue==null)|| (aValue.trim().length()==0)) {
aValue="0.0";
aComp.setValue(new BigDecimal(0));
aComp.invalidate();
}
//cannot accept negative value
if(aValue.startsWith("-")) {
aValue="0.0";
aComp.setValue(new BigDecimal(0));
aComp.invalidate();
}
//if negative was somewhere remove it in screen
else
if(aValue.indexOf("-")!=-1) {
log.info("negative is not permitted");
aValue=aComp.getValue().toString();
aComp.setValue(new BigDecimal(aValue));
aComp.invalidate();
}
//cannot accept duplicate dots
if(aValue.indexOf(".")!=-1) {
if(aValue.indexOf(".")==aValue.lastIndexOf(".")) {
//retain value
//remove multiple dots
}else {
aValue=aComp.getValue().toString();
aComp.setValue(new BigDecimal(aValue));
aComp.invalidate();
}
}
//cannot accept commas
if(aValue.indexOf(",")!=-1) {
aValue=aComp.getValue().toString();
aComp.setValue(new BigDecimal(aValue));
aComp.invalidate();
}
return aValue;
}
thanks...my evaluation is working fine now.
Asked: 2008-07-09 02:16:25 +0800
Seen: 307 times
Last updated: Jul 09 '08