Re: Freemarker+ExtJS vs Wicket questions
Hi,
I don't want to convince you anyhow. Just responding to your
questions/observations.
On Sun, Dec 4, 2011 at 6:30 AM, Andrei Voden are...@gmail.com wrote:
Hi. I have been developing for a while using Freemarker + some JS
frameworks (like ExtJS, Dojo and JQuery) and Java as Model building on
back-end. Now I hear lots of talks about Wicket so Im trying to understand
pros and cons. After reading intro in Wicket I have mixed feelings. Below
are my conclusions. I know Im biased but dont take it as offense. Instead
rather as my misunderstanding since Im really trying to see if Wicket
is thing to switch to.
Pros:
-Seems like this is good for companies where you have Java programmers that
you can now utilize for building Front-end.
True, only if you are a pure consumer of component libraries.
Once you start writing your own components you'll need knowledge in JS/CSS.
- Clean HTML code and all logic handled by Java.
This is a real pros, imo.
- Quick to start building simple apps that fall into the box of the
framework.
- No JScript or HTML/CSS knowledge needed. Can separate easier Frot-end and
Back-end developers -- easier to hire.
Partially true.
I think both developers should know something about the technology of
the other. Not details, but something. Otherwise they cannot meet in
the middle.
Cons:
- On other hand, as Front-end developer this looks weird to me since I feel
like I don't have full control of JScript code.
1) Since Wicket uses Java for generating HTML/CSS/JScript UI controls for
me meaning if I need to tweak those controls outside of their box it maybe
problematic. In my experience any framework good until you start doing
something different from what it was intended and then you can spend more
time trying to do simple out of box thing then using native JScript. Is
there JScript sources for Wicket controls?
Well written component should provide means to be extended and
customized. Most of the components should not generate JS and/or CSS.
The resources should be delivered with the components (see
ResourceReference) and the Java part of the component should just call
JS functions.
E.g.: AjaxRequestTarget.appendJavaScript(myJsLib.doSomething())
and this call should be made so it is easy for the consumer of the
component to replace it with something else.
2) Prototyping: using Freemarker I can do changes and simply refresh page.
In case of Wicket I need to recompile.
For prototyping this is OK but in long term the static types and the
unit tests are more valuable ;-)
But for prototyping (small app) you can use embedded Jetty (see
Start.java in Wicket's quickstart app) and this is quite fast.
3) Logic blocks: Looks like Wicket allows injection of values into HTML
tags with wicket: attribute but how do you handle block logic like
IF(condition) then {use HTML block1} else { use another HTML block}?
This is done at the server side:
if (condition) {
add(panelA)
} else {
add(panelB)
}
If the block is something really reusable then you should use Panel,
otherwise you can use Fragment instead.
4) Non html data templating: often during page generation I compose some
AJAX data from FreeMarker inside tag. How do I do similar things from
Wicket?
It is still possible. Wicket's Ajax behaviors can give you callback
url to the component at the server side. So you can ask the component
to do something and with AjaxRequestTarget.appendJavaScript() you can
return any string response (like JSON, XML, ...) and handle this
response with any JS templating system.
See the behavior used for
https://github.com/wicketstuff/core/tree/master/jdk-1.5-parent/autocomplete-tagit-parent/autocomplete-tagit
. It returns JSON which is consumed by JQuery UI autocompleter.
5) Is it harder/simpler to create custom UI controls in Wicket vs using say
Dojo, ExtJS or JQuery?
The best is to integrate them. See 4) above for integration of Wicket
with JQuery UI component.
Once integrated you can give this component to a Java developer who
don't know JS at all and she can use it in her app.
Andrei
--
Martin Grigorov
jWeekend
Training, Consulting, Development
http://jWeekend.com
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Re: Freemarker+ExtJS vs Wicket questions
Thank you for your input. Really helping me to grasp it. Question on #4 in Cons: what I ment is to generate templated content outside of the tags. Like for example I have: script .templated code. /script Is that doable? Sorry if that sounds newbeesh. Andrei
Re: Freemarker+ExtJS vs Wicket questions
o.a.w.Component and Behavior classes have method #renderHead(IHeaderResponse) with IHeaderResponse#renderXyz methods you can contribute JS, CSS and plain text to the page. It is up to you how you'll generate the constribution. In TagIt component I used TextTemplate to prepare the template and populate it but you can use anything, even FreeMarker to do that. in wicket-velocity module we do the same with Velocity. Additionally when you use Wicket Ajax functionality you can use AjaxRequestTarget.(pre|ap)pendJavaScript() methods to contribute JS respectively before and after the replacement of the components' markup. On Sun, Dec 4, 2011 at 11:04 AM, Andrei Voden are...@gmail.com wrote: Thank you for your input. Really helping me to grasp it. Question on #4 in Cons: what I ment is to generate templated content outside of the tags. Like for example I have: script .templated code. /script Is that doable? Sorry if that sounds newbeesh. Andrei -- Martin Grigorov jWeekend Training, Consulting, Development http://jWeekend.com - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Event or Notice when a ListView's Model changes
Hello, I have a Wicket ListView, who's Model is based on a select on a process-database. Users can initiate a (deploy-)process, and when the process is finished, a row is added in the database, and so also in the ListView's Model's backing List. When this happens, I want to rerender another part of the same Panel. That other part has it's own Form. So I need an event when a row is added. The Wicket Events to send after that I can figure out for myself, my concern is about reacting to the database inserts. I tried various methods, onChange and the like, on various components, but to no avail. Please help, I'm using Wicket 1.5.3 Regards, Hans -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Event-or-Notice-when-a-ListView-s-Model-changes-tp4157030p4157030.html Sent from the Users forum mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Event or Notice when a ListView's Model changes
Hi, have you tried overriding onModelChanged()? You can fire event in this method. Hello, I have a Wicket ListView, who's Model is based on a select on a process-database. Users can initiate a (deploy-)process, and when the process is finished, a row is added in the database, and so also in the ListView's Model's backing List. When this happens, I want to rerender another part of the same Panel. That other part has it's own Form. So I need an event when a row is added. The Wicket Events to send after that I can figure out for myself, my concern is about reacting to the database inserts. I tried various methods, onChange and the like, on various components, but to no avail. Please help, I'm using Wicket 1.5.3 Regards, Hans -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Event-or-Notice-when-a-ListView-s-Model-changes-tp4157030p4157030.html Sent from the Users forum mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Event or Notice when a ListView's Model changes
Yes, I'm sorry, I wrote /I tried various methods, onChange and the like/ by which I meant onModelChanged(). But onModelChanged() isn't called when a row is added. I think that makes sense, because the backing List on itself hasn't changed. Furthermore, I experimented by replacing the ListView by a DataView, but no calling of onModelChanged() there either. -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Event-or-Notice-when-a-ListView-s-Model-changes-tp4157030p4157831.html Sent from the Users forum mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Internationalization on panels
Hi again, I have the same problems with table header columns internationalization. This is what I use: -columns.add(new PropertyColumnUser(new ModelString(new ResourceModel(name.name, Default).getObject()), age, age)); -columns.add(new PropertyColumnUser(new ModelString(getString(name.name)), name, name)); It seems it doesn't find the property name.name with ResourceModel and it displays Default. This property exists. as for the second columns it displays. Do you have any idea? Is there other solution to pass the property to the PropertyColumn? Thanks. -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Internationalization-on-panels-tp2299768p4157832.html Sent from the Users forum mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Event or Notice when a ListView's Model changes
call manually listview.modelChanged() after the update of its List this will call onModelChanged On Sun, Dec 4, 2011 at 8:37 PM, hfriederichs h.friederi...@ohra.nl wrote: Yes, I'm sorry, I wrote /I tried various methods, onChange and the like/ by which I meant onModelChanged(). But onModelChanged() isn't called when a row is added. I think that makes sense, because the backing List on itself hasn't changed. Furthermore, I experimented by replacing the ListView by a DataView, but no calling of onModelChanged() there either. -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Event-or-Notice-when-a-ListView-s-Model-changes-tp4157030p4157831.html Sent from the Users forum mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org -- Martin Grigorov jWeekend Training, Consulting, Development http://jWeekend.com - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Internationalization on panels
It works with columns.add(new PropertyColumnUser(new ResourceModel(name.name, Default), age, age)); but I don't understand why it didn't find property with the first variant. columns.add(new PropertyColumnUser(new ModelString(new ResourceModel(name.name, Default).getObject()), age, age)); -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Internationalization-on-panels-tp2299768p4157887.html Sent from the Users forum mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Event or Notice when a ListView's Model changes
But the List isn't updated by a user's action. There's a decoupling here: the user's action inserts a row that has a 'state-column' that's initialized with, let's call it 'unfinished'. The processes are executed asynchronously by another thread, that, after some minutes, updates the state-column to 'finished'. My ListView represents a list of finished processes, so you can never know when the selection on the database changes. So how do I know when an update has taken place? I need a sort of listener there. -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Event-or-Notice-when-a-ListView-s-Model-changes-tp4157030p4158107.html Sent from the Users forum mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Event or Notice when a ListView's Model changes
the label that outputs the status can keep its last status, and in onbeforerender can check if the new status coming from the model is different then the old. if it is, it can fire the event. -igor On Sun, Dec 4, 2011 at 12:59 PM, hfriederichs h.friederi...@ohra.nl wrote: But the List isn't updated by a user's action. There's a decoupling here: the user's action inserts a row that has a 'state-column' that's initialized with, let's call it 'unfinished'. The processes are executed asynchronously by another thread, that, after some minutes, updates the state-column to 'finished'. My ListView represents a list of finished processes, so you can never know when the selection on the database changes. So how do I know when an update has taken place? I need a sort of listener there. -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Event-or-Notice-when-a-ListView-s-Model-changes-tp4157030p4158107.html Sent from the Users forum mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Event or Notice when a ListView's Model changes
I'm sorry if my writing is confusing. But there isn't a label that outputs the state, because the list shows /only/ finished processes. Maybe the following flow explains what happens: - A user chooses an application he wants to deploy to a certain stage, let's say production - When he has chosen, a label shows the current version of the application in production - The user clicks the 'deploybutton', as a result of which a row is inserted with state 'unfinished' - Another thread picks up the process and executes a script that deploys the application - At the end of this, that other thread updates the state-field to 'finished' - At the bottom of the panel my listview with finished processes is updated, and the user will notice that because I added a AjaxSelfUpdatingTimerBehavior. - But when the list is refreshed I want the version label that I mentioned in the beginning to be refreshed also, because there's a new current version -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Event-or-Notice-when-a-ListView-s-Model-changes-tp4157030p4158203.html Sent from the Users forum mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Internationalization on panels
Read https://cwiki.apache.org/WICKET/working-with-wicket-models.html Be careful on the static vs. dynamic part ;-) On Sun, Dec 4, 2011 at 8:54 PM, cosmindumy cosmind...@yahoo.com wrote: It works with columns.add(new PropertyColumnUser(new ResourceModel(name.name, Default), age, age)); but I don't understand why it didn't find property with the first variant. columns.add(new PropertyColumnUser(new ModelString(new ResourceModel(name.name, Default).getObject()), age, age)); -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Internationalization-on-panels-tp2299768p4157887.html Sent from the Users forum mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org -- Martin Grigorov jWeekend Training, Consulting, Development http://jWeekend.com - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Internationalization on panels
Thanks. I red the tutorial and now is more clear. Now I am looking for a solution to change the ResourceModel of a Lable. For instance I want the key to be changed between show.components and when the component is displayed the property to be hide.componets. Therefore I need a way to set my label resource model. If you know a solution please tell me. Thanks. -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Internationalization-on-panels-tp2299768p4158350.html Sent from the Users forum mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Event or Notice when a ListView's Model changes
If you override listview's onBeforeRender you could check if finished processes' list contains version displayed by label and if so, you could update it. I'm sorry if my writing is confusing. But there isn't a label that outputs the state, because the list shows /only/ finished processes. Maybe the following flow explains what happens: - A user chooses an application he wants to deploy to a certain stage, let's say production - When he has chosen, a label shows the current version of the application in production - The user clicks the 'deploybutton', as a result of which a row is inserted with state 'unfinished' - Another thread picks up the process and executes a script that deploys the application - At the end of this, that other thread updates the state-field to 'finished' - At the bottom of the panel my listview with finished processes is updated, and the user will notice that because I added a AjaxSelfUpdatingTimerBehavior. - But when the list is refreshed I want the version label that I mentioned in the beginning to be refreshed also, because there's a new current version -- View this message in context: http://apache-wicket.1842946.n4.nabble.com/Event-or-Notice-when-a-ListView-s-Model-changes-tp4157030p4158203.html Sent from the Users forum mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Internationalization on panels
class mymodel extends abstractreadonlymodelstring {
string getobject() {
if (show) return getstring(show.components) else return
getstring(hide.components);}}
-igor
On Sun, Dec 4, 2011 at 2:09 PM, cosmindumy cosmind...@yahoo.com wrote:
Thanks. I red the tutorial and now is more clear.
Now I am looking for a solution to change the ResourceModel of a Lable.
For instance I want the key to be changed between show.components and
when the component is displayed the property to be hide.componets.
Therefore I need a way to set my label resource model.
If you know a solution please tell me.
Thanks.
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