Re: Event handler for model ?
I thinkt I´m getting the hang of things now, using your examples and
the ones from the link I posted
On 12 Juni, 09:39, mnenchev wrote:
> Well what exactly you want to do?
>
>
>
> Dalla wrote:
> > Could you please post some examples will?
> > Or maybe send me some code? mnenchevs example was good, but more
> > examples never hurt :-)
>
> > On 11 Juni, 14:08, Will wrote:
>
> >> That's what I use as well. I created an Abstract Class with
> >> Hashmap for removing a handler
> >> (because HandlerManager.removeHandler(..) is depricated) and use that
> >> for all my UI components that create custom events. I then create sub-
> >> Classes of EventHandler for each logical group of events but that's
> >> just to help keep the project readable. Doing it once for the base UI
> >> class didn't seem overweight but we'll see how it performs once I get
> >> the project into a perf test.
>
> >> On Jun 10, 8:40 am, Dalla wrote:
>
> >>> Hi
>
> >>> I´m having trouble understanding how to implement an event handler for
> >>> my custom objects with the new event handler system. Let´s pretend I
> >>> have a very simple model class like this one:
>
> >>> public class ArrivalData {
> >>> private Date date;
> >>> private boolean processing = false;
>
> >>> public Date getDate() {
> >>> return date;
> >>> }
>
> >>> public void setDate(Date date) {
> >>> this.date = date;
> >>> }
>
> >>> }
>
> >>> When setDate is called, I want to fire an event that my view
> >>> components can listen on, and act on when called for.
> >>> How would you go about doing that? Are there any existing handler
> >>> interfaces that can be used?
> >>> I found this tutorial (see link below), but it seems pretty
> >>> complicated for what I´m trying to
> >>> acheive.http://www.itsolut.com/chrismusings/2009/04/28/business-events-with-g...
>
> >>> What´s best practice here?- Dölj citerad text -
>
> - Visa citerad text -
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Re: Event handler for model ?
Well what exactly you want to do?
Dalla wrote:
> Could you please post some examples will?
> Or maybe send me some code? mnenchevs example was good, but more
> examples never hurt :-)
>
> On 11 Juni, 14:08, Will wrote:
>
>> That's what I use as well. I created an Abstract Class with
>> Hashmap for removing a handler
>> (because HandlerManager.removeHandler(..) is depricated) and use that
>> for all my UI components that create custom events. I then create sub-
>> Classes of EventHandler for each logical group of events but that's
>> just to help keep the project readable. Doing it once for the base UI
>> class didn't seem overweight but we'll see how it performs once I get
>> the project into a perf test.
>>
>> On Jun 10, 8:40 am, Dalla wrote:
>>
>>
>>
>>
>>> Hi
>>>
>>> I´m having trouble understanding how to implement an event handler for
>>> my custom objects with the new event handler system. Let´s pretend I
>>> have a very simple model class like this one:
>>>
>>> public class ArrivalData {
>>> private Date date;
>>> private boolean processing = false;
>>>
>>> public Date getDate() {
>>> return date;
>>> }
>>>
>>> public void setDate(Date date) {
>>> this.date = date;
>>> }
>>>
>>> }
>>>
>>> When setDate is called, I want to fire an event that my view
>>> components can listen on, and act on when called for.
>>> How would you go about doing that? Are there any existing handler
>>> interfaces that can be used?
>>> I found this tutorial (see link below), but it seems pretty
>>> complicated for what I´m trying to
>>> acheive.http://www.itsolut.com/chrismusings/2009/04/28/business-events-with-g...
>>>
>>> What´s best practice here?
>>>
> >
>
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Re: Event handler for model ?
Could you please post some examples will?
Or maybe send me some code? mnenchevs example was good, but more
examples never hurt :-)
On 11 Juni, 14:08, Will wrote:
> That's what I use as well. I created an Abstract Class with
> Hashmap for removing a handler
> (because HandlerManager.removeHandler(..) is depricated) and use that
> for all my UI components that create custom events. I then create sub-
> Classes of EventHandler for each logical group of events but that's
> just to help keep the project readable. Doing it once for the base UI
> class didn't seem overweight but we'll see how it performs once I get
> the project into a perf test.
>
> On Jun 10, 8:40 am, Dalla wrote:
>
>
>
> > Hi
>
> > I´m having trouble understanding how to implement an event handler for
> > my custom objects with the new event handler system. Let´s pretend I
> > have a very simple model class like this one:
>
> > public class ArrivalData {
> > private Date date;
> > private boolean processing = false;
>
> > public Date getDate() {
> > return date;
> > }
>
> > public void setDate(Date date) {
> > this.date = date;
> > }
>
> > }
>
> > When setDate is called, I want to fire an event that my view
> > components can listen on, and act on when called for.
> > How would you go about doing that? Are there any existing handler
> > interfaces that can be used?
> > I found this tutorial (see link below), but it seems pretty
> > complicated for what I´m trying to
> > acheive.http://www.itsolut.com/chrismusings/2009/04/28/business-events-with-g...
>
> > What´s best practice here?
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Re: Event handler for model ?
That's what I use as well. I created an Abstract Class with
Hashmap for removing a handler
(because HandlerManager.removeHandler(..) is depricated) and use that
for all my UI components that create custom events. I then create sub-
Classes of EventHandler for each logical group of events but that's
just to help keep the project readable. Doing it once for the base UI
class didn't seem overweight but we'll see how it performs once I get
the project into a perf test.
On Jun 10, 8:40 am, Dalla wrote:
> Hi
>
> I´m having trouble understanding how to implement an event handler for
> my custom objects with the new event handler system. Let´s pretend I
> have a very simple model class like this one:
>
> public class ArrivalData {
> private Date date;
> private boolean processing = false;
>
> public Date getDate() {
> return date;
> }
>
> public void setDate(Date date) {
> this.date = date;
> }
>
> }
>
> When setDate is called, I want to fire an event that my view
> components can listen on, and act on when called for.
> How would you go about doing that? Are there any existing handler
> interfaces that can be used?
> I found this tutorial (see link below), but it seems pretty
> complicated for what I´m trying to
> acheive.http://www.itsolut.com/chrismusings/2009/04/28/business-events-with-g...
>
> What´s best practice here?
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Re: Event handler for model ?
Here you are some simple example, witch is not the best example but
would point you:
public interface MyHandler {
public void handle(T t);
}
public class ArrivalData {
private Date date;
private boolean processing = false;
private List> dateHandlers = new
ArrayList();
public void addHandler(MyHandler h) {
dateHandlers.add(h);
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
for(MyHandler h : dateHandlers) {
h.handle(date);
}
}
}
public class CustomObject implements MyHandler {
@Override
public void handle(Date date) {
// receive data from setDate(..);
// handle it in some way
}
}
Dalla wrote:
> No clues anyone?
>
> On 10 Juni, 14:40, Dalla wrote:
>
>> Hi
>>
>> I´m having trouble understanding how to implement an event handler for
>> my custom objects with the new event handler system. Let´s pretend I
>> have a very simple model class like this one:
>>
>> public class ArrivalData {
>> private Date date;
>> private boolean processing = false;
>>
>> public Date getDate() {
>> return date;
>> }
>>
>> public void setDate(Date date) {
>> this.date = date;
>> }
>>
>> }
>>
>> When setDate is called, I want to fire an event that my view
>> components can listen on, and act on when called for.
>> How would you go about doing that? Are there any existing handler
>> interfaces that can be used?
>> I found this tutorial (see link below), but it seems pretty
>> complicated for what I´m trying to
>> acheive.http://www.itsolut.com/chrismusings/2009/04/28/business-events-with-g...
>>
>> What´s best practice here?
>>
> >
>
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Re: Event handler for model ?
No clues anyone?
On 10 Juni, 14:40, Dalla wrote:
> Hi
>
> I´m having trouble understanding how to implement an event handler for
> my custom objects with the new event handler system. Let´s pretend I
> have a very simple model class like this one:
>
> public class ArrivalData {
> private Date date;
> private boolean processing = false;
>
> public Date getDate() {
> return date;
> }
>
> public void setDate(Date date) {
> this.date = date;
> }
>
> }
>
> When setDate is called, I want to fire an event that my view
> components can listen on, and act on when called for.
> How would you go about doing that? Are there any existing handler
> interfaces that can be used?
> I found this tutorial (see link below), but it seems pretty
> complicated for what I´m trying to
> acheive.http://www.itsolut.com/chrismusings/2009/04/28/business-events-with-g...
>
> What´s best practice here?
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