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Posted to users@wicket.apache.org by freak182 <em...@gmail.com> on 2008/06/10 07:57:06 UTC
How to update parent component from a panel?
Hello,
Im having problem of updating parents components.Hereis my problem, there is
page and in that page there is a panel. The panel contain a
FormUpdatingComponent that attached to a dropdownchoice. Now when the
dropdown is triggered, i want to update the parents (the page)
textbox/label..is this possible?
Thanks a lot...Cheers
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Re: How to update parent component from a panel?
Posted by freak182 <em...@gmail.com>.
Hello,
Thanks...if i have time i will surely play around with it and give you some
feedback..
Thanks a lot..cheers
Timo Rantalaiho wrote:
>
> On Tue, 10 Jun 2008, freak182 wrote:
>> Thats a great patch...it is already been updated in wicket-extensions? so
>> i
>> can download it?
>
> No, but if you want to play around with it, a "standalone
> version" is here:
>
>
> http://issues.apache.org/jira/secure/attachment/12375765/Generic_EventBroadcaster.patch
>
> It doesn't change any existing classes, so you can just rip
> the code and include it in your project. Feedback is welcome :)
>
> Some sort of event mechanism is coming to 1.5.
>
> Best wishes,
> Timo
>
> --
> Timo Rantalaiho
> Reaktor Innovations Oy <URL: http://www.ri.fi/ >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
>
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Re: How to update parent component from a panel?
Posted by freak182 <em...@gmail.com>.
Hello Timo,
Thanks a lot...i have attach the files for sample webapp for events.you can
play around with if you have time and forgive me if my codes were ugly :) i
just want to test your patch...any feedback after...
Thanks a lot...Cheers
http://www.nabble.com/file/p17791744/events_core.zip events_core.zip <br/>
http://www.nabble.com/file/p17791744/pages_app.zip pages_app.zip
Timo Rantalaiho wrote:
>
> On Wed, 11 Jun 2008, freak182 wrote:
>> I already rip out your patch and run the testcase it worked but how can i
>> implement/intgerate to my project...do you have a working example project
>> for that?
>
> Unfortunately not, but just copy the classes to a suitable
> package in your project and start using them in the same way
> as in the test cases.
>
> E.g. something along these lines
>
> public class FooSelectionEvent implements Event {
> private final IModel foo;
> private final AjaxRequestTarget target;
>
> public FooSelectionEvent(IModel foo, AjaxRequestTarget target) {
> this.foo = foo;
> this.target = target;
> }
>
> public Foo getFoo() {
> return (Foo) foo.getObject();
> }
>
> public void addToTarget(Component c) {
> target.addComponent(c);
> }
> }
>
> public interface FooSelectionReceiver extends EventReceiver {
> void onEvent(FooSelectionEvent event);
> }
>
> public class SelectedFooLabel extends Label implements
> FooSelectionReceiver {
> ...
> public void onEvent(FooSelectionEvent event) {
> setModelObject(event.getFoo());
> event.addToTarget(this);
> }
> }
>
> public class FooPanel extends Panel {
> private EventBroadcaster broadcaster = new EventBroadcaster(this);
> ...
> add(new DropDownChoice("fooSelection", fooSelection, fooList)
> .add(new AjaxFormComponentUpdatingBehavior("onchange") {
> public void onEvent(AjaxRequestTarget target) {
> broadcaster.broadcast(FooSelectionReceiver.class, new
> FooSelectionEvent(target, fooSelection));
> }
> });
> ...
> }
>
>
> Now SelectedFooLabel receives the events sent from the
> DropDownChoice, provided that both component instances are on
> the same page (you must be careful with repeater items and
> other replaced components here).
>
> Best wishes,
> Timo
>
> --
> Timo Rantalaiho
> Reaktor Innovations Oy <URL: http://www.ri.fi/ >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
>
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Re: How to update parent component from a panel?
Posted by Timo Rantalaiho <Ti...@ri.fi>.
On Wed, 11 Jun 2008, freak182 wrote:
> I already rip out your patch and run the testcase it worked but how can i
> implement/intgerate to my project...do you have a working example project
> for that?
Unfortunately not, but just copy the classes to a suitable
package in your project and start using them in the same way
as in the test cases.
E.g. something along these lines
public class FooSelectionEvent implements Event {
private final IModel foo;
private final AjaxRequestTarget target;
public FooSelectionEvent(IModel foo, AjaxRequestTarget target) {
this.foo = foo;
this.target = target;
}
public Foo getFoo() {
return (Foo) foo.getObject();
}
public void addToTarget(Component c) {
target.addComponent(c);
}
}
public interface FooSelectionReceiver extends EventReceiver {
void onEvent(FooSelectionEvent event);
}
public class SelectedFooLabel extends Label implements FooSelectionReceiver {
...
public void onEvent(FooSelectionEvent event) {
setModelObject(event.getFoo());
event.addToTarget(this);
}
}
public class FooPanel extends Panel {
private EventBroadcaster broadcaster = new EventBroadcaster(this);
...
add(new DropDownChoice("fooSelection", fooSelection, fooList)
.add(new AjaxFormComponentUpdatingBehavior("onchange") {
public void onEvent(AjaxRequestTarget target) {
broadcaster.broadcast(FooSelectionReceiver.class, new
FooSelectionEvent(target, fooSelection));
}
});
...
}
Now SelectedFooLabel receives the events sent from the
DropDownChoice, provided that both component instances are on
the same page (you must be careful with repeater items and
other replaced components here).
Best wishes,
Timo
--
Timo Rantalaiho
Reaktor Innovations Oy <URL: http://www.ri.fi/ >
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Re: How to update parent component from a panel?
Posted by freak182 <em...@gmail.com>.
Hello Timo,
I already rip out your patch and run the testcase it worked but how can i
implement/intgerate to my project...do you have a working example project
for that?
Thanks a lot..Cheers :)
Timo Rantalaiho wrote:
>
> On Tue, 10 Jun 2008, freak182 wrote:
>> Thats a great patch...it is already been updated in wicket-extensions? so
>> i
>> can download it?
>
> No, but if you want to play around with it, a "standalone
> version" is here:
>
>
> http://issues.apache.org/jira/secure/attachment/12375765/Generic_EventBroadcaster.patch
>
> It doesn't change any existing classes, so you can just rip
> the code and include it in your project. Feedback is welcome :)
>
> Some sort of event mechanism is coming to 1.5.
>
> Best wishes,
> Timo
>
> --
> Timo Rantalaiho
> Reaktor Innovations Oy <URL: http://www.ri.fi/ >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
>
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Re: How to update parent component from a panel?
Posted by Timo Rantalaiho <Ti...@ri.fi>.
On Tue, 10 Jun 2008, freak182 wrote:
> Thats a great patch...it is already been updated in wicket-extensions? so i
> can download it?
No, but if you want to play around with it, a "standalone
version" is here:
http://issues.apache.org/jira/secure/attachment/12375765/Generic_EventBroadcaster.patch
It doesn't change any existing classes, so you can just rip
the code and include it in your project. Feedback is welcome :)
Some sort of event mechanism is coming to 1.5.
Best wishes,
Timo
--
Timo Rantalaiho
Reaktor Innovations Oy <URL: http://www.ri.fi/ >
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Re: How to update parent component from a panel?
Posted by freak182 <em...@gmail.com>.
Hello,
Thats a great patch...it is already been updated in wicket-extensions? so i
can download it?
Thanks a lot...Cheers.
Timo Rantalaiho wrote:
>
> On Mon, 09 Jun 2008, freak182 wrote:
>> Im having problem of updating parents components.Hereis my problem, there
>> is
>> page and in that page there is a panel. The panel contain a
>> FormUpdatingComponent that attached to a dropdownchoice. Now when the
>> dropdown is triggered, i want to update the parents (the page)
>> textbox/label..is this possible?
>
> Hmm, what is FormUpdatingComponent?-) A typo perhaps?
>
> Sure it is possible, e.g. something like
>
> public class FooPage extends WebPage {
> public FooPage() {
> Panel fooPanel = new FooPanel("fooPanel", ...
> ....
> Foo initialSelection = ...
> IModel fooModel = new Model(initialSelection);
> final Label display = new Label("foo", fooModel);
> display.setOutputMarkupId(true);
> add(display);
> DropDownChoice selection = new DropDownChoice("fooSelection",
> fooModel, choices);
> selection.add(new AjaxFormComponentUpdatingBehavior("onchange) {
> public void onEvent(AjaxRequestTarget target) {
> target.addComponent(display);
> }
> });
> fooPanel.add(selection);
> ...
> }
> }
>
> But if your Panel is "further away" from the other
> components directly on the page, this might get trickier.
> For normal requests you can often get away with sharing the
> model, but if passing it all the way to the "sending"
> component gets nasty, or if you want to repaint something in
> the parent via Ajax, something like this might be easier
>
> public interface FooChoiceListener {
> void onSelection(IModel foo, AjaxRequestTarget target);
> }
>
> public class MyLabel extends Label implements FooChoiceListener {
> ...
> public void onSelection(IModel foo, AjaxRequestTarget target) {
> setModelObject(foo.getObject());
> target.addComponent(this);
> }
> }
>
>
> public class FooPage extends WebPage {
> public FooPage() {
> Label display = new MyLabel(...);
> add(new FooPanel());
> ...
> }
> }
>
> public class FooPanel extends Panel {
> public FooPanel(String id, IModel foo) {
> ...
> DropDownChoice selection = new DropDownChoice("fooSelection",
> fooModel, choices);
> selection.add(new AjaxFormComponentUpdatingBehavior("onchange) {
> public void onEvent(AjaxRequestTarget target) {
> getPage().visitChildren(FooChoiceListener.class,
> new IVisitor() {
> public Object component(Component c) {
> ((FooChoiceListener) c).onSelection(fooModel, target);
> return CONTINUE_TRAVERSAL;
> }
> });
> }
> });
> }
> }
>
> A "generic eventbroadcaster" can be found here
>
> http://issues.apache.org/jira/browse/WICKET-1312
>
> Best wishes,
> Timo
>
> --
> Timo Rantalaiho
> Reaktor Innovations Oy <URL: http://www.ri.fi/ >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
>
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Re: How to update parent component from a panel?
Posted by Timo Rantalaiho <Ti...@ri.fi>.
On Tue, 16 Dec 2008, freak182 wrote:
> I want to ask if this "events" stuff is already available in wicket 1.3.5
> release? if so, what classes should i look into?
No it's not, but you can just copy its code (or one of the
competing implementations :)) from the patches attached to
the Jira issue.
Probably it will be in some form in Wicket 1.5.
Best wishes,
Timo
--
Timo Rantalaiho
Reaktor Innovations Oy <URL: http://www.ri.fi/ >
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Re: How to update parent component from a panel?
Posted by freak182 <em...@gmail.com>.
Hello,
I just got into this message just now...you know you have to play with
ajaxrequesttartget component...
For: Timo
I want to ask if this "events" stuff is already available in wicket 1.3.5
release? if so, what classes should i look into?
Thank you for your help.
Lenka Laurincikova wrote:
>
> Hello,
>
> I have followed this example. Thank you a lot, it is actually helped me.
> However even though I got refreshed component, the previous state of the
> component is still displayed. I have to refresh the page to remove it.
>
> Any helping hint would be appreciated.
>
> regards
> Lenka
>
>
> Timo Rantalaiho wrote:
>>
>> On Mon, 09 Jun 2008, freak182 wrote:
>>> Im having problem of updating parents components.Hereis my problem,
>>> there is
>>> page and in that page there is a panel. The panel contain a
>>> FormUpdatingComponent that attached to a dropdownchoice. Now when the
>>> dropdown is triggered, i want to update the parents (the page)
>>> textbox/label..is this possible?
>>
>> Hmm, what is FormUpdatingComponent?-) A typo perhaps?
>>
>> Sure it is possible, e.g. something like
>>
>> public class FooPage extends WebPage {
>> public FooPage() {
>> Panel fooPanel = new FooPanel("fooPanel", ...
>> ....
>> Foo initialSelection = ...
>> IModel fooModel = new Model(initialSelection);
>> final Label display = new Label("foo", fooModel);
>> display.setOutputMarkupId(true);
>> add(display);
>> DropDownChoice selection = new DropDownChoice("fooSelection",
>> fooModel, choices);
>> selection.add(new AjaxFormComponentUpdatingBehavior("onchange) {
>> public void onEvent(AjaxRequestTarget target) {
>> target.addComponent(display);
>> }
>> });
>> fooPanel.add(selection);
>> ...
>> }
>> }
>>
>> But if your Panel is "further away" from the other
>> components directly on the page, this might get trickier.
>> For normal requests you can often get away with sharing the
>> model, but if passing it all the way to the "sending"
>> component gets nasty, or if you want to repaint something in
>> the parent via Ajax, something like this might be easier
>>
>> public interface FooChoiceListener {
>> void onSelection(IModel foo, AjaxRequestTarget target);
>> }
>>
>> public class MyLabel extends Label implements FooChoiceListener {
>> ...
>> public void onSelection(IModel foo, AjaxRequestTarget target) {
>> setModelObject(foo.getObject());
>> target.addComponent(this);
>> }
>> }
>>
>>
>> public class FooPage extends WebPage {
>> public FooPage() {
>> Label display = new MyLabel(...);
>> add(new FooPanel());
>> ...
>> }
>> }
>>
>> public class FooPanel extends Panel {
>> public FooPanel(String id, IModel foo) {
>> ...
>> DropDownChoice selection = new DropDownChoice("fooSelection",
>> fooModel, choices);
>> selection.add(new AjaxFormComponentUpdatingBehavior("onchange) {
>> public void onEvent(AjaxRequestTarget target) {
>> getPage().visitChildren(FooChoiceListener.class,
>> new IVisitor() {
>> public Object component(Component c) {
>> ((FooChoiceListener) c).onSelection(fooModel, target);
>> return CONTINUE_TRAVERSAL;
>> }
>> });
>> }
>> });
>> }
>> }
>>
>> A "generic eventbroadcaster" can be found here
>>
>> http://issues.apache.org/jira/browse/WICKET-1312
>>
>> Best wishes,
>> Timo
>>
>> --
>> Timo Rantalaiho
>> Reaktor Innovations Oy <URL: http://www.ri.fi/ >
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
>>
>
>
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Re: How to update parent component from a panel?
Posted by Lenka Laurincikova <li...@gmail.com>.
Hello,
I have followed this example. Thank you a lot, it is actually helped me.
However even though I got refreshed component, the previous state of the
component is still displayed. I have to refresh the page to remove it.
Any helping hint would be appreciated.
regards
Lenka
Timo Rantalaiho wrote:
>
> On Mon, 09 Jun 2008, freak182 wrote:
>> Im having problem of updating parents components.Hereis my problem, there
>> is
>> page and in that page there is a panel. The panel contain a
>> FormUpdatingComponent that attached to a dropdownchoice. Now when the
>> dropdown is triggered, i want to update the parents (the page)
>> textbox/label..is this possible?
>
> Hmm, what is FormUpdatingComponent?-) A typo perhaps?
>
> Sure it is possible, e.g. something like
>
> public class FooPage extends WebPage {
> public FooPage() {
> Panel fooPanel = new FooPanel("fooPanel", ...
> ....
> Foo initialSelection = ...
> IModel fooModel = new Model(initialSelection);
> final Label display = new Label("foo", fooModel);
> display.setOutputMarkupId(true);
> add(display);
> DropDownChoice selection = new DropDownChoice("fooSelection",
> fooModel, choices);
> selection.add(new AjaxFormComponentUpdatingBehavior("onchange) {
> public void onEvent(AjaxRequestTarget target) {
> target.addComponent(display);
> }
> });
> fooPanel.add(selection);
> ...
> }
> }
>
> But if your Panel is "further away" from the other
> components directly on the page, this might get trickier.
> For normal requests you can often get away with sharing the
> model, but if passing it all the way to the "sending"
> component gets nasty, or if you want to repaint something in
> the parent via Ajax, something like this might be easier
>
> public interface FooChoiceListener {
> void onSelection(IModel foo, AjaxRequestTarget target);
> }
>
> public class MyLabel extends Label implements FooChoiceListener {
> ...
> public void onSelection(IModel foo, AjaxRequestTarget target) {
> setModelObject(foo.getObject());
> target.addComponent(this);
> }
> }
>
>
> public class FooPage extends WebPage {
> public FooPage() {
> Label display = new MyLabel(...);
> add(new FooPanel());
> ...
> }
> }
>
> public class FooPanel extends Panel {
> public FooPanel(String id, IModel foo) {
> ...
> DropDownChoice selection = new DropDownChoice("fooSelection",
> fooModel, choices);
> selection.add(new AjaxFormComponentUpdatingBehavior("onchange) {
> public void onEvent(AjaxRequestTarget target) {
> getPage().visitChildren(FooChoiceListener.class,
> new IVisitor() {
> public Object component(Component c) {
> ((FooChoiceListener) c).onSelection(fooModel, target);
> return CONTINUE_TRAVERSAL;
> }
> });
> }
> });
> }
> }
>
> A "generic eventbroadcaster" can be found here
>
> http://issues.apache.org/jira/browse/WICKET-1312
>
> Best wishes,
> Timo
>
> --
> Timo Rantalaiho
> Reaktor Innovations Oy <URL: http://www.ri.fi/ >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
>
-----
Kind regards
Lenka
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Re: How to update parent component from a panel?
Posted by Timo Rantalaiho <Ti...@ri.fi>.
On Mon, 09 Jun 2008, freak182 wrote:
> Im having problem of updating parents components.Hereis my problem, there is
> page and in that page there is a panel. The panel contain a
> FormUpdatingComponent that attached to a dropdownchoice. Now when the
> dropdown is triggered, i want to update the parents (the page)
> textbox/label..is this possible?
Hmm, what is FormUpdatingComponent?-) A typo perhaps?
Sure it is possible, e.g. something like
public class FooPage extends WebPage {
public FooPage() {
Panel fooPanel = new FooPanel("fooPanel", ...
....
Foo initialSelection = ...
IModel fooModel = new Model(initialSelection);
final Label display = new Label("foo", fooModel);
display.setOutputMarkupId(true);
add(display);
DropDownChoice selection = new DropDownChoice("fooSelection",
fooModel, choices);
selection.add(new AjaxFormComponentUpdatingBehavior("onchange) {
public void onEvent(AjaxRequestTarget target) {
target.addComponent(display);
}
});
fooPanel.add(selection);
...
}
}
But if your Panel is "further away" from the other
components directly on the page, this might get trickier.
For normal requests you can often get away with sharing the
model, but if passing it all the way to the "sending"
component gets nasty, or if you want to repaint something in
the parent via Ajax, something like this might be easier
public interface FooChoiceListener {
void onSelection(IModel foo, AjaxRequestTarget target);
}
public class MyLabel extends Label implements FooChoiceListener {
...
public void onSelection(IModel foo, AjaxRequestTarget target) {
setModelObject(foo.getObject());
target.addComponent(this);
}
}
public class FooPage extends WebPage {
public FooPage() {
Label display = new MyLabel(...);
add(new FooPanel());
...
}
}
public class FooPanel extends Panel {
public FooPanel(String id, IModel foo) {
...
DropDownChoice selection = new DropDownChoice("fooSelection",
fooModel, choices);
selection.add(new AjaxFormComponentUpdatingBehavior("onchange) {
public void onEvent(AjaxRequestTarget target) {
getPage().visitChildren(FooChoiceListener.class,
new IVisitor() {
public Object component(Component c) {
((FooChoiceListener) c).onSelection(fooModel, target);
return CONTINUE_TRAVERSAL;
}
});
}
});
}
}
A "generic eventbroadcaster" can be found here
http://issues.apache.org/jira/browse/WICKET-1312
Best wishes,
Timo
--
Timo Rantalaiho
Reaktor Innovations Oy <URL: http://www.ri.fi/ >
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