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Posted to users@wicket.apache.org by "spencer.c" <sp...@gmail.com> on 2008/02/27 19:12:59 UTC
First Complex Component Question...
I am making a component which needs to add (1) some javascript which
references the location of some images, and (2) some style-sheet information
which references some images. The images are going to be located in the jar
that contains the component.
Since I need to insert the location of the images into the .js and .css, I
templated them using PackagedTextTemplate, to insert the appropriate
references at runtime.
Now, rather than insert the style info and javascript directly into the page
I was trying to make those dynamic resources, so that they get generated
once and then are easily referenced, rather than being re-templatized with
each component request. I made two classes that override WebResource to
provide the correct content. My question is, how do I let my component jar
register these resources and then how do I include the references in the
component itself? I think this is probably straightforward, but haven't
been able to find an example of this somewhere.
Thanks for any pointers.
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Re: First Complex Component Question...
Posted by Igor Vaynberg <ig...@gmail.com>.
if a browser issues a HEAD request, like it usually done then the
following occurs:
resourcestream stream=resource.newresourcestream();
return stream.getlastmodifiedtime();
during this portiion there is no request cycle. your resourcestream
implementation should be lazy and only create all the stuff when
getinputstream/length() is called.
its a bit crappy right now, something we are hopefully going to address in 1.4
-igor
On Wed, Feb 27, 2008 at 2:01 PM, spencer.c <sp...@gmail.com> wrote:
>
> Alright, I've one last question regarding this process.
>
> In my custom Resource class, I need to get the URL for a packaged resource,
> to insert into the returned resource value. I was intending to do this
> using the following:
>
> RequestCycle.get().urlFor(MY_PACKAGED_RESOURCE);
>
> However, when I attempt to pull up the Resource, it throws a NPE, because
> RequestCycle.get() is null. I didn't know that resources were retrieved
> outside of the normal RequestCycle process. How should I retrieve the URL
> instead?
>
> Thanks for your help!
>
>
>
>
>
>
> spencer.c wrote:
> >
> > Right, this is exactly my plan...what I need to know is, where do I do the
> > Application.getSharedResources() code? The component will be packaged in
> > its own jar, and I want the component to contribute its automatically,
> > without the App calling it specifically. I don't see a hook for
> > initializing the shared resources when the jar containing the component is
> > first loaded, but it seems like it has to exist...
> >
> > Actually, I think I just found what I need...
> >
> > 1) In root of the component's jar, put wicket.properties file that
> > contains:
> > initializer = mypackage.componentname
> > 2) Have my component implement IInitializer to contribute the shared
> > resources.
> > 3) Use the ResourceReferences' getUrl method as needed
> >
> > Look right?
> >
> > Thanks!
> >
> >
> >
> >
> > igor.vaynberg wrote:
> >>
> >> create a CssResource and JavascriptResource that extend Resource and
> >> know how to stream the contents by reading parameters off url. add
> >> those to application.getsharedresources().
> >>
> >> then call urlfor(resourcereference) and you should have the url that
> >> invoke the resource. resourceref should have the same class,string you
> >> used to register the resource with shared resources.
> >>
> >> so you will end up with <link type="text/css"
> >> href="resources/com.my.component/javascript.js?foo=bar"/> in your html
> >>
> >> -igor
> >>
> >> On Wed, Feb 27, 2008 at 10:12 AM, spencer.c <sp...@gmail.com>
> >> wrote:
> >>>
> >>> I am making a component which needs to add (1) some javascript which
> >>> references the location of some images, and (2) some style-sheet
> >>> information
> >>> which references some images. The images are going to be located in
> >>> the jar
> >>> that contains the component.
> >>>
> >>> Since I need to insert the location of the images into the .js and
> >>> .css, I
> >>> templated them using PackagedTextTemplate, to insert the appropriate
> >>> references at runtime.
> >>>
> >>> Now, rather than insert the style info and javascript directly into the
> >>> page
> >>> I was trying to make those dynamic resources, so that they get
> >>> generated
> >>> once and then are easily referenced, rather than being re-templatized
> >>> with
> >>> each component request. I made two classes that override WebResource
> >>> to
> >>> provide the correct content. My question is, how do I let my component
> >>> jar
> >>> register these resources and then how do I include the references in
> >>> the
> >>> component itself? I think this is probably straightforward, but
> >>> haven't
> >>> been able to find an example of this somewhere.
> >>> Thanks for any pointers.
> >>> --
> >>> View this message in context:
> >>> http://www.nabble.com/First-Complex-Component-Question...-tp15719359p15719359.html
> >>> Sent from the Wicket - User mailing list archive at Nabble.com.
> >>>
> >>>
> >>> ---------------------------------------------------------------------
> >>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> >>> For additional commands, e-mail: users-help@wicket.apache.org
> >>>
> >>>
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> >> For additional commands, e-mail: users-help@wicket.apache.org
> >>
> >>
> >>
> >
> >
>
> --
> View this message in context: http://www.nabble.com/First-Complex-Component-Question...-tp15719359p15724456.html
>
>
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
>
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> For additional commands, e-mail: users-help@wicket.apache.org
>
>
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Re: First Complex Component Question...
Posted by "spencer.c" <sp...@gmail.com>.
Alright, I've one last question regarding this process.
In my custom Resource class, I need to get the URL for a packaged resource,
to insert into the returned resource value. I was intending to do this
using the following:
RequestCycle.get().urlFor(MY_PACKAGED_RESOURCE);
However, when I attempt to pull up the Resource, it throws a NPE, because
RequestCycle.get() is null. I didn't know that resources were retrieved
outside of the normal RequestCycle process. How should I retrieve the URL
instead?
Thanks for your help!
spencer.c wrote:
>
> Right, this is exactly my plan...what I need to know is, where do I do the
> Application.getSharedResources() code? The component will be packaged in
> its own jar, and I want the component to contribute its automatically,
> without the App calling it specifically. I don't see a hook for
> initializing the shared resources when the jar containing the component is
> first loaded, but it seems like it has to exist...
>
> Actually, I think I just found what I need...
>
> 1) In root of the component's jar, put wicket.properties file that
> contains:
> initializer = mypackage.componentname
> 2) Have my component implement IInitializer to contribute the shared
> resources.
> 3) Use the ResourceReferences' getUrl method as needed
>
> Look right?
>
> Thanks!
>
>
>
>
> igor.vaynberg wrote:
>>
>> create a CssResource and JavascriptResource that extend Resource and
>> know how to stream the contents by reading parameters off url. add
>> those to application.getsharedresources().
>>
>> then call urlfor(resourcereference) and you should have the url that
>> invoke the resource. resourceref should have the same class,string you
>> used to register the resource with shared resources.
>>
>> so you will end up with <link type="text/css"
>> href="resources/com.my.component/javascript.js?foo=bar"/> in your html
>>
>> -igor
>>
>> On Wed, Feb 27, 2008 at 10:12 AM, spencer.c <sp...@gmail.com>
>> wrote:
>>>
>>> I am making a component which needs to add (1) some javascript which
>>> references the location of some images, and (2) some style-sheet
>>> information
>>> which references some images. The images are going to be located in
>>> the jar
>>> that contains the component.
>>>
>>> Since I need to insert the location of the images into the .js and
>>> .css, I
>>> templated them using PackagedTextTemplate, to insert the appropriate
>>> references at runtime.
>>>
>>> Now, rather than insert the style info and javascript directly into the
>>> page
>>> I was trying to make those dynamic resources, so that they get
>>> generated
>>> once and then are easily referenced, rather than being re-templatized
>>> with
>>> each component request. I made two classes that override WebResource
>>> to
>>> provide the correct content. My question is, how do I let my component
>>> jar
>>> register these resources and then how do I include the references in
>>> the
>>> component itself? I think this is probably straightforward, but
>>> haven't
>>> been able to find an example of this somewhere.
>>> Thanks for any pointers.
>>> --
>>> View this message in context:
>>> http://www.nabble.com/First-Complex-Component-Question...-tp15719359p15719359.html
>>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>>> For additional commands, e-mail: users-help@wicket.apache.org
>>>
>>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
>>
>
>
--
View this message in context: http://www.nabble.com/First-Complex-Component-Question...-tp15719359p15724456.html
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Re: First Complex Component Question...
Posted by Igor Vaynberg <ig...@gmail.com>.
see IInitializer
basically in this jar you will have a wicket.properties file that
inside has initializer=com.my.Initializer which is a class that
implements IInitializer. the rest is pretty obvious...
-igor
On Wed, Feb 27, 2008 at 12:18 PM, spencer.c <sp...@gmail.com> wrote:
>
> Right, this is exactly my plan...what I need to know is, where do I do the
> Application.getSharedResources() code? The component will be packaged in
> its own jar, and I want the component to contribute its automatically,
> without the App calling it specifically. I don't see a hook for
> initializing the shared resources when the jar containing the component is
> first loaded, but it seems like it has to exist...
>
> Actually, I think I just found what I need...
>
> 1) In root of the component's jar, put wicket.properties file that contains:
> initializer = mypackage.componentname
> 2) Have my component implement IInitializer to contribute the shared
> resources.
> 3) Use the ResourceReferences' getUrl method as needed
>
> Look right?
>
> Thanks!
>
>
>
>
>
>
> igor.vaynberg wrote:
> >
> > create a CssResource and JavascriptResource that extend Resource and
> > know how to stream the contents by reading parameters off url. add
> > those to application.getsharedresources().
> >
> > then call urlfor(resourcereference) and you should have the url that
> > invoke the resource. resourceref should have the same class,string you
> > used to register the resource with shared resources.
> >
> > so you will end up with <link type="text/css"
> > href="resources/com.my.component/javascript.js?foo=bar"/> in your html
> >
> > -igor
> >
> > On Wed, Feb 27, 2008 at 10:12 AM, spencer.c <sp...@gmail.com>
> > wrote:
> >>
> >> I am making a component which needs to add (1) some javascript which
> >> references the location of some images, and (2) some style-sheet
> >> information
> >> which references some images. The images are going to be located in the
> >> jar
> >> that contains the component.
> >>
> >> Since I need to insert the location of the images into the .js and .css,
> >> I
> >> templated them using PackagedTextTemplate, to insert the appropriate
> >> references at runtime.
> >>
> >> Now, rather than insert the style info and javascript directly into the
> >> page
> >> I was trying to make those dynamic resources, so that they get generated
> >> once and then are easily referenced, rather than being re-templatized
> >> with
> >> each component request. I made two classes that override WebResource to
> >> provide the correct content. My question is, how do I let my component
> >> jar
> >> register these resources and then how do I include the references in the
> >> component itself? I think this is probably straightforward, but haven't
> >> been able to find an example of this somewhere.
> >> Thanks for any pointers.
> >> --
> >> View this message in context:
> >> http://www.nabble.com/First-Complex-Component-Question...-tp15719359p15719359.html
> >> Sent from the Wicket - User mailing list archive at Nabble.com.
> >>
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> >> For additional commands, e-mail: users-help@wicket.apache.org
> >>
> >>
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> > For additional commands, e-mail: users-help@wicket.apache.org
> >
> >
> >
>
> --
> View this message in context: http://www.nabble.com/First-Complex-Component-Question...-tp15719359p15722118.html
>
>
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
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Re: First Complex Component Question...
Posted by "spencer.c" <sp...@gmail.com>.
Right, this is exactly my plan...what I need to know is, where do I do the
Application.getSharedResources() code? The component will be packaged in
its own jar, and I want the component to contribute its automatically,
without the App calling it specifically. I don't see a hook for
initializing the shared resources when the jar containing the component is
first loaded, but it seems like it has to exist...
Actually, I think I just found what I need...
1) In root of the component's jar, put wicket.properties file that contains:
initializer = mypackage.componentname
2) Have my component implement IInitializer to contribute the shared
resources.
3) Use the ResourceReferences' getUrl method as needed
Look right?
Thanks!
igor.vaynberg wrote:
>
> create a CssResource and JavascriptResource that extend Resource and
> know how to stream the contents by reading parameters off url. add
> those to application.getsharedresources().
>
> then call urlfor(resourcereference) and you should have the url that
> invoke the resource. resourceref should have the same class,string you
> used to register the resource with shared resources.
>
> so you will end up with <link type="text/css"
> href="resources/com.my.component/javascript.js?foo=bar"/> in your html
>
> -igor
>
> On Wed, Feb 27, 2008 at 10:12 AM, spencer.c <sp...@gmail.com>
> wrote:
>>
>> I am making a component which needs to add (1) some javascript which
>> references the location of some images, and (2) some style-sheet
>> information
>> which references some images. The images are going to be located in the
>> jar
>> that contains the component.
>>
>> Since I need to insert the location of the images into the .js and .css,
>> I
>> templated them using PackagedTextTemplate, to insert the appropriate
>> references at runtime.
>>
>> Now, rather than insert the style info and javascript directly into the
>> page
>> I was trying to make those dynamic resources, so that they get generated
>> once and then are easily referenced, rather than being re-templatized
>> with
>> each component request. I made two classes that override WebResource to
>> provide the correct content. My question is, how do I let my component
>> jar
>> register these resources and then how do I include the references in the
>> component itself? I think this is probably straightforward, but haven't
>> been able to find an example of this somewhere.
>> Thanks for any pointers.
>> --
>> View this message in context:
>> http://www.nabble.com/First-Complex-Component-Question...-tp15719359p15719359.html
>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
>
--
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Re: First Complex Component Question...
Posted by Igor Vaynberg <ig...@gmail.com>.
create a CssResource and JavascriptResource that extend Resource and
know how to stream the contents by reading parameters off url. add
those to application.getsharedresources().
then call urlfor(resourcereference) and you should have the url that
invoke the resource. resourceref should have the same class,string you
used to register the resource with shared resources.
so you will end up with <link type="text/css"
href="resources/com.my.component/javascript.js?foo=bar"/> in your html
-igor
On Wed, Feb 27, 2008 at 10:12 AM, spencer.c <sp...@gmail.com> wrote:
>
> I am making a component which needs to add (1) some javascript which
> references the location of some images, and (2) some style-sheet information
> which references some images. The images are going to be located in the jar
> that contains the component.
>
> Since I need to insert the location of the images into the .js and .css, I
> templated them using PackagedTextTemplate, to insert the appropriate
> references at runtime.
>
> Now, rather than insert the style info and javascript directly into the page
> I was trying to make those dynamic resources, so that they get generated
> once and then are easily referenced, rather than being re-templatized with
> each component request. I made two classes that override WebResource to
> provide the correct content. My question is, how do I let my component jar
> register these resources and then how do I include the references in the
> component itself? I think this is probably straightforward, but haven't
> been able to find an example of this somewhere.
> Thanks for any pointers.
> --
> View this message in context: http://www.nabble.com/First-Complex-Component-Question...-tp15719359p15719359.html
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
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