T4: including javascript in a component

2009-12-30 Thread Ivano Luberti
Hello, I'm trying to include some simple javascript in a component in my
T4 application.
I want my only textfield to  get focus when is displayed.
I'm following the instructions provided at:

http://tapestry.apache.org/tapestry4.1/components/general/script.html

The template of the page including the component has @Shell and @Body
specified.
My component looks like this:

html
head
titleMET Online/title
meta http-equiv=Content-Type content=text/html; charset=ISO-8859-1
link href=css/stile_palmare.css rel=stylesheet type=text/css
/head
body
 span jwcid=@Script
script=/it/archimede/met/metgestioneingressi/tapestry/scripts/FormFocus.script
component=ognl:components.barCode/

div id=box_operazione
h1Lettura BarCode/h1   
br /
  h2passare il barcode sotto il lettore ottico/h2
form method=post action= jwcid=barCodeForm
  input type=text jwcid=barCode class=text_box value= /
  br /br /
input type=submit name=Submit value=Submit class=bottone
  /form
   /div   
   
/body
/html

The Script template file is the last one provides at:

http://tapestry.apache.org/tapestry4.1/components/general/script.html

the one without CDATA

When I try to display the page I get:

[ +/- ] Exception: Unable to read OGNL expression 'parsed OGNL
expression' of
{component=$textfield_...@81eb97c1[homeloggeduser/barCodeForm.barCode]}:
source is null for getProperty(null, name)

I have already tried putting a bad component name in the @Script span
and the error changes, so it seem the name is right. I have put a bad
path to the script file and the error changes , then the path is correct.

Can someone point me in the right direction?



-- 
==
dott. Ivano Mario Luberti
Archimede Informatica societa' cooperativa a r. l.
Sede Operativa
Via Gereschi 36 - 56126- Pisa
tel.: +39-050- 580959
tel/fax: +39-050-9711344
web: www.archicoop.it
==


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To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org
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Re: T4: including javascript in a component

2009-12-30 Thread Andreas Andreou
Hi,
The error message says that something.getName() is trying to get evaluated but
something is null

Finding where exactly the error is thrown will show you which object is null...

On Wed, Dec 30, 2009 at 20:51, Ivano Luberti lube...@archicoop.it wrote:
 Hello, I'm trying to include some simple javascript in a component in my
 T4 application.
 I want my only textfield to  get focus when is displayed.
 I'm following the instructions provided at:

 http://tapestry.apache.org/tapestry4.1/components/general/script.html

 The template of the page including the component has @Shell and @Body
 specified.
 My component looks like this:

 html
 head
 titleMET Online/title
 meta http-equiv=Content-Type content=text/html; charset=ISO-8859-1
 link href=css/stile_palmare.css rel=stylesheet type=text/css
 /head
 body
  span jwcid=@Script
 script=/it/archimede/met/metgestioneingressi/tapestry/scripts/FormFocus.script
 component=ognl:components.barCode/

    div id=box_operazione
    h1Lettura BarCode/h1
        br /
          h2passare il barcode sotto il lettore ottico/h2
    form method=post action= jwcid=barCodeForm
          input type=text jwcid=barCode class=text_box value= /
          br /br /
        input type=submit name=Submit value=Submit class=bottone
      /form
   /div

 /body
 /html

 The Script template file is the last one provides at:

 http://tapestry.apache.org/tapestry4.1/components/general/script.html

 the one without CDATA

 When I try to display the page I get:

 [ +/- ] Exception: Unable to read OGNL expression 'parsed OGNL
 expression' of
 {component=$textfield_...@81eb97c1[homeloggeduser/barCodeForm.barCode]}:
 source is null for getProperty(null, name)

 I have already tried putting a bad component name in the @Script span
 and the error changes, so it seem the name is right. I have put a bad
 path to the script file and the error changes , then the path is correct.

 Can someone point me in the right direction?



 --
 ==
 dott. Ivano Mario Luberti
 Archimede Informatica societa' cooperativa a r. l.
 Sede Operativa
 Via Gereschi 36 - 56126- Pisa
 tel.: +39-050- 580959
 tel/fax: +39-050-9711344
 web: www.archicoop.it
 ==


 -
 To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org
 For additional commands, e-mail: users-h...@tapestry.apache.org





-- 
Andreas Andreou - andy...@apache.org - http://blog.andyhot.gr
Tapestry / Tacos developer
Open Source / JEE Consulting

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To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org
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Re: T4: including javascript in a component

2009-12-30 Thread Ivano Luberti
Thanks Andreas , the problem is that everything works until I insert the
javascript.
In fact the exception is thrown inside the Script implementation. Down
here you'll find the init part of the srtack trace.
I was wondering if not using the @Body in the component html template is
correct, given the fact that it is used in the html template of the page
that call the component.




* ognl.OgnlRuntime.getProperty(OgnlRuntime.java:2203)
* ognl.ASTProperty.getValueBody(ASTProperty.java:114)
* ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
* ognl.SimpleNode.getValue(SimpleNode.java:258)
* ognl.ASTChain.getValueBody(ASTChain.java:141)
* ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
* ognl.SimpleNode.getValue(SimpleNode.java:258)
* ognl.Ognl.getValue(Ognl.java:494)
* ognl.Ognl.getValue(Ognl.java:458)
* 
org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.readCompiled(ExpressionEvaluatorImpl.java:123)

* 
org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.read(ExpressionEvaluatorImpl.java:112)

* 
$ExpressionEvaluator_125e178e557.read($ExpressionEvaluator_125e178e557.java)

* 
org.apache.tapestry.script.ScriptSessionImpl.evaluate(ScriptSessionImpl.java:86)

* org.apache.tapestry.script.AbstractToken.evaluate(AbstractToken.java:84)

* org.apache.tapestry.script.InsertToken.write(InsertToken.java:48)
* 
org.apache.tapestry.script.AbstractToken.writeChildren(AbstractToken.java:71)

* org.apache.tapestry.script.LetToken.write(LetToken.java:53)
* 
org.apache.tapestry.script.AbstractToken.writeChildren(AbstractToken.java:71)

* org.apache.tapestry.script.ParsedScript.execute(ParsedScript.java:82)
* org.apache.tapestry.html.Script.renderComponent(Script.java:159)
* org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)

* 
org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:187)

* org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:107)

* org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)

* 
org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:187)

* 
org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:538)

* org.apache.tapestry.html.Body.renderComponent(Body.java:38)


Andreas Andreou ha scritto:
 Hi,
 The error message says that something.getName() is trying to get evaluated but
 something is null

 Finding where exactly the error is thrown will show you which object is 
 null...

 On Wed, Dec 30, 2009 at 20:51, Ivano Luberti lube...@archicoop.it wrote:
   
 Hello, I'm trying to include some simple javascript in a component in my
 T4 application.
 I want my only textfield to  get focus when is displayed.
 I'm following the instructions provided at:

 http://tapestry.apache.org/tapestry4.1/components/general/script.html

 The template of the page including the component has @Shell and @Body
 specified.
 My component looks like this:

 html
 head
 titleMET Online/title
 meta http-equiv=Content-Type content=text/html; charset=ISO-8859-1
 link href=css/stile_palmare.css rel=stylesheet type=text/css
 /head
 body
  span jwcid=@Script
 script=/it/archimede/met/metgestioneingressi/tapestry/scripts/FormFocus.script
 component=ognl:components.barCode/

div id=box_operazione
h1Lettura BarCode/h1
br /
  h2passare il barcode sotto il lettore ottico/h2
form method=post action= jwcid=barCodeForm
  input type=text jwcid=barCode class=text_box value= /
  br /br /
input type=submit name=Submit value=Submit class=bottone
  /form
   /div

 /body
 /html

 The Script template file is the last one provides at:

 http://tapestry.apache.org/tapestry4.1/components/general/script.html

 the one without CDATA

 When I try to display the page I get:

 [ +/- ] Exception: Unable to read OGNL expression 'parsed OGNL
 expression' of
 {component=$textfield_...@81eb97c1[homeloggeduser/barCodeForm.barCode]}:
 source is null for getProperty(null, name)

 I have already tried putting a bad component name in the @Script span
 and the error changes, so it seem the name is right. I have put a bad
 path to the script file and the error changes , then the path is correct.

 Can someone point me in the right direction?



 --
 ==
 dott. Ivano Mario Luberti
 Archimede Informatica societa' cooperativa a r. l.
 Sede Operativa
 Via Gereschi 36 - 56126- Pisa
 tel.: +39-050- 580959
 tel/fax: +39-050-9711344
 web: www.archicoop.it
 ==


 -
 To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org
 For additional commands, e-mail: users-h...@tapestry.apache.org


 



   

-- 
==
dott. Ivano Mario 

Re: T4: including javascript in a component

2009-12-30 Thread Andreas Andreou
You don't specify which object you've found to be null... but anyway, let
me try...

looking at the FormFocus.script code from
http://tapestry.apache.org/tapestry4.1/components/general/script.html
i see ${component.form.name} and ${component.name}, so either
component or component.form is null (according to the error message)

Looking at the javadocs for AbstractFormComponent
http://tapestry.apache.org/tapestry4.1/apidocs/org/apache/tapestry/form/AbstractFormComponent.html
I read
getForm() : returns the IForm which contains the component, or null if
the component is
not contained by a form, or if the containing Form is not currently rendering.

Finally, looking at your code I see that @Script is outside the @Form,
so according
to the javadocs, getForm() should indeed return null !

The cure? move the @Script inside @Form - or rewrite the script so that it
doesn't use getForm() perhaps...

On Wed, Dec 30, 2009 at 23:35, Ivano Luberti lube...@archicoop.it wrote:
 Thanks Andreas , the problem is that everything works until I insert the
 javascript.
 In fact the exception is thrown inside the Script implementation. Down
 here you'll find the init part of the srtack trace.
 I was wondering if not using the @Body in the component html template is
 correct, given the fact that it is used in the html template of the page
 that call the component.




    * ognl.OgnlRuntime.getProperty(OgnlRuntime.java:2203)
    * ognl.ASTProperty.getValueBody(ASTProperty.java:114)
    * ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
    * ognl.SimpleNode.getValue(SimpleNode.java:258)
    * ognl.ASTChain.getValueBody(ASTChain.java:141)
    * ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
    * ognl.SimpleNode.getValue(SimpleNode.java:258)
    * ognl.Ognl.getValue(Ognl.java:494)
    * ognl.Ognl.getValue(Ognl.java:458)
    * 
 org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.readCompiled(ExpressionEvaluatorImpl.java:123)

    * 
 org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.read(ExpressionEvaluatorImpl.java:112)

    * 
 $ExpressionEvaluator_125e178e557.read($ExpressionEvaluator_125e178e557.java)

    * 
 org.apache.tapestry.script.ScriptSessionImpl.evaluate(ScriptSessionImpl.java:86)

    * org.apache.tapestry.script.AbstractToken.evaluate(AbstractToken.java:84)

    * org.apache.tapestry.script.InsertToken.write(InsertToken.java:48)
    * 
 org.apache.tapestry.script.AbstractToken.writeChildren(AbstractToken.java:71)

    * org.apache.tapestry.script.LetToken.write(LetToken.java:53)
    * 
 org.apache.tapestry.script.AbstractToken.writeChildren(AbstractToken.java:71)

    * org.apache.tapestry.script.ParsedScript.execute(ParsedScript.java:82)
    * org.apache.tapestry.html.Script.renderComponent(Script.java:159)
    * org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)

    * 
 org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:187)

    * org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:107)

    * org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)

    * 
 org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:187)

    * 
 org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:538)

    * org.apache.tapestry.html.Body.renderComponent(Body.java:38)


 Andreas Andreou ha scritto:
 Hi,
 The error message says that something.getName() is trying to get evaluated 
 but
 something is null

 Finding where exactly the error is thrown will show you which object is 
 null...

 On Wed, Dec 30, 2009 at 20:51, Ivano Luberti lube...@archicoop.it wrote:

 Hello, I'm trying to include some simple javascript in a component in my
 T4 application.
 I want my only textfield to  get focus when is displayed.
 I'm following the instructions provided at:

 http://tapestry.apache.org/tapestry4.1/components/general/script.html

 The template of the page including the component has @Shell and @Body
 specified.
 My component looks like this:

 html
 head
 titleMET Online/title
 meta http-equiv=Content-Type content=text/html; charset=ISO-8859-1
 link href=css/stile_palmare.css rel=stylesheet type=text/css
 /head
 body
  span jwcid=@Script
 script=/it/archimede/met/metgestioneingressi/tapestry/scripts/FormFocus.script
 component=ognl:components.barCode/

    div id=box_operazione
    h1Lettura BarCode/h1
        br /
          h2passare il barcode sotto il lettore ottico/h2
    form method=post action= jwcid=barCodeForm
          input type=text jwcid=barCode class=text_box value= /
          br /br /
        input type=submit name=Submit value=Submit class=bottone
      /form
   /div

 /body
 /html

 The Script template file is the last one provides at:

 http://tapestry.apache.org/tapestry4.1/components/general/script.html

 the one without CDATA

 When I try to display the page I get:

 [ +/- ] Exception: Unable to read OGNL expression 'parsed OGNL
 

T4: including javascript in a component (solved)

2009-12-30 Thread Ivano Luberti
Actually the error was in the html template of the component:
The @Script refers to the text field component barCode but it is written
before the the component itself. Hence when the file is parsed the the
text field component doesn't exist yet.
I have put the Scrtp declaration after the /form tag and it works.


html
head
titleMET Online/title
meta http-equiv=Content-Type content=text/html; charset=ISO-8859-1
link href=css/stile_palmare.css rel=stylesheet type=text/css
/head
body
 span jwcid=@Script
script=/it/archimede/met/metgestioneingressi/tapestry/scripts/FormFocus.script
component=ognl:components.barCode/

div id=box_operazione
h1Lettura BarCode/h1
br /
  h2passare il barcode sotto il lettore ottico/h2
form method=post action= jwcid=barCodeForm
  input type=text jwcid=barCode class=text_box value= /
  br /br /
input type=submit name=Submit value=Submit class=bottone
  /form
   /div

/body
/html




-- 
==
dott. Ivano Mario Luberti
Archimede Informatica societa' cooperativa a r. l.
Sede Operativa
Via Gereschi 36 - 56126- Pisa
tel.: +39-050- 580959
tel/fax: +39-050-9711344
web: www.archicoop.it
==



-
To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org
For additional commands, e-mail: users-h...@tapestry.apache.org



Re: T4: including javascript in a component

2009-12-30 Thread Ivano Luberti
I have wrote the solution I have found before reading this.
Actually It was enough to put it after the form.
The null component was the text field component not the Form.
You almost got it because sure the position of @Script matters.

It seems that getForm returns something even if the form has already
been rendered.

Andreas Andreou ha scritto:
 You don't specify which object you've found to be null... but anyway, let
 me try...

 looking at the FormFocus.script code from
 http://tapestry.apache.org/tapestry4.1/components/general/script.html
 i see ${component.form.name} and ${component.name}, so either
 component or component.form is null (according to the error message)

 Looking at the javadocs for AbstractFormComponent
 http://tapestry.apache.org/tapestry4.1/apidocs/org/apache/tapestry/form/AbstractFormComponent.html
 I read
 getForm() : returns the IForm which contains the component, or null if
 the component is
 not contained by a form, or if the containing Form is not currently rendering.

 Finally, looking at your code I see that @Script is outside the @Form,
 so according
 to the javadocs, getForm() should indeed return null !

 The cure? move the @Script inside @Form - or rewrite the script so that it
 doesn't use getForm() perhaps...

 On Wed, Dec 30, 2009 at 23:35, Ivano Luberti lube...@archicoop.it wrote:
   
 Thanks Andreas , the problem is that everything works until I insert the
 javascript.
 In fact the exception is thrown inside the Script implementation. Down
 here you'll find the init part of the srtack trace.
 I was wondering if not using the @Body in the component html template is
 correct, given the fact that it is used in the html template of the page
 that call the component.




* ognl.OgnlRuntime.getProperty(OgnlRuntime.java:2203)
* ognl.ASTProperty.getValueBody(ASTProperty.java:114)
* ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
* ognl.SimpleNode.getValue(SimpleNode.java:258)
* ognl.ASTChain.getValueBody(ASTChain.java:141)
* ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
* ognl.SimpleNode.getValue(SimpleNode.java:258)
* ognl.Ognl.getValue(Ognl.java:494)
* ognl.Ognl.getValue(Ognl.java:458)
* 
 org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.readCompiled(ExpressionEvaluatorImpl.java:123)

* 
 org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.read(ExpressionEvaluatorImpl.java:112)

* 
 $ExpressionEvaluator_125e178e557.read($ExpressionEvaluator_125e178e557.java)

* 
 org.apache.tapestry.script.ScriptSessionImpl.evaluate(ScriptSessionImpl.java:86)

* org.apache.tapestry.script.AbstractToken.evaluate(AbstractToken.java:84)

* org.apache.tapestry.script.InsertToken.write(InsertToken.java:48)
* 
 org.apache.tapestry.script.AbstractToken.writeChildren(AbstractToken.java:71)

* org.apache.tapestry.script.LetToken.write(LetToken.java:53)
* 
 org.apache.tapestry.script.AbstractToken.writeChildren(AbstractToken.java:71)

* org.apache.tapestry.script.ParsedScript.execute(ParsedScript.java:82)
* org.apache.tapestry.html.Script.renderComponent(Script.java:159)
* org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)

* 
 org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:187)

* 
 org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:107)

* org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)

* 
 org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:187)

* 
 org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:538)

* org.apache.tapestry.html.Body.renderComponent(Body.java:38)


 Andreas Andreou ha scritto:
 
 Hi,
 The error message says that something.getName() is trying to get evaluated 
 but
 something is null

 Finding where exactly the error is thrown will show you which object is 
 null...

 On Wed, Dec 30, 2009 at 20:51, Ivano Luberti lube...@archicoop.it wrote:

   
 Hello, I'm trying to include some simple javascript in a component in my
 T4 application.
 I want my only textfield to  get focus when is displayed.
 I'm following the instructions provided at:

 http://tapestry.apache.org/tapestry4.1/components/general/script.html

 The template of the page including the component has @Shell and @Body
 specified.
 My component looks like this:

 html
 head
 titleMET Online/title
 meta http-equiv=Content-Type content=text/html; charset=ISO-8859-1
 link href=css/stile_palmare.css rel=stylesheet type=text/css
 /head
 body
  span jwcid=@Script
 script=/it/archimede/met/metgestioneingressi/tapestry/scripts/FormFocus.script
 component=ognl:components.barCode/

div id=box_operazione
h1Lettura BarCode/h1
br /
  h2passare il barcode sotto il lettore ottico/h2
form method=post action= jwcid=barCodeForm
  input type=text jwcid=barCode class=text_box value= 

Re: T4: including javascript in a component

2009-12-30 Thread Ivano Luberti
Correction: putting the @Script solved the null pointer but the
generated javascript was incorrect.
I had to put it before the end of the Form.
You were right Andreas

Ivano Luberti ha scritto:
 I have wrote the solution I have found before reading this.
 Actually It was enough to put it after the form.
 The null component was the text field component not the Form.
 You almost got it because sure the position of @Script matters.

 It seems that getForm returns something even if the form has already
 been rendered.

 Andreas Andreou ha scritto:
   
 You don't specify which object you've found to be null... but anyway, let
 me try...

 looking at the FormFocus.script code from
 http://tapestry.apache.org/tapestry4.1/components/general/script.html
 i see ${component.form.name} and ${component.name}, so either
 component or component.form is null (according to the error message)

 Looking at the javadocs for AbstractFormComponent
 http://tapestry.apache.org/tapestry4.1/apidocs/org/apache/tapestry/form/AbstractFormComponent.html
 I read
 getForm() : returns the IForm which contains the component, or null if
 the component is
 not contained by a form, or if the containing Form is not currently 
 rendering.

 Finally, looking at your code I see that @Script is outside the @Form,
 so according
 to the javadocs, getForm() should indeed return null !

 The cure? move the @Script inside @Form - or rewrite the script so that it
 doesn't use getForm() perhaps...

 On Wed, Dec 30, 2009 at 23:35, Ivano Luberti lube...@archicoop.it wrote:
   
 
 Thanks Andreas , the problem is that everything works until I insert the
 javascript.
 In fact the exception is thrown inside the Script implementation. Down
 here you'll find the init part of the srtack trace.
 I was wondering if not using the @Body in the component html template is
 correct, given the fact that it is used in the html template of the page
 that call the component.




* ognl.OgnlRuntime.getProperty(OgnlRuntime.java:2203)
* ognl.ASTProperty.getValueBody(ASTProperty.java:114)
* ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
* ognl.SimpleNode.getValue(SimpleNode.java:258)
* ognl.ASTChain.getValueBody(ASTChain.java:141)
* ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
* ognl.SimpleNode.getValue(SimpleNode.java:258)
* ognl.Ognl.getValue(Ognl.java:494)
* ognl.Ognl.getValue(Ognl.java:458)
* 
 org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.readCompiled(ExpressionEvaluatorImpl.java:123)

* 
 org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.read(ExpressionEvaluatorImpl.java:112)

* 
 $ExpressionEvaluator_125e178e557.read($ExpressionEvaluator_125e178e557.java)

* 
 org.apache.tapestry.script.ScriptSessionImpl.evaluate(ScriptSessionImpl.java:86)

* 
 org.apache.tapestry.script.AbstractToken.evaluate(AbstractToken.java:84)

* org.apache.tapestry.script.InsertToken.write(InsertToken.java:48)
* 
 org.apache.tapestry.script.AbstractToken.writeChildren(AbstractToken.java:71)

* org.apache.tapestry.script.LetToken.write(LetToken.java:53)
* 
 org.apache.tapestry.script.AbstractToken.writeChildren(AbstractToken.java:71)

* org.apache.tapestry.script.ParsedScript.execute(ParsedScript.java:82)
* org.apache.tapestry.html.Script.renderComponent(Script.java:159)
* 
 org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)

* 
 org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:187)

* 
 org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:107)

* 
 org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:724)

* 
 org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:187)

* 
 org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:538)

* org.apache.tapestry.html.Body.renderComponent(Body.java:38)


 Andreas Andreou ha scritto:
 
   
 Hi,
 The error message says that something.getName() is trying to get evaluated 
 but
 something is null

 Finding where exactly the error is thrown will show you which object is 
 null...

 On Wed, Dec 30, 2009 at 20:51, Ivano Luberti lube...@archicoop.it wrote:

   
 
 Hello, I'm trying to include some simple javascript in a component in my
 T4 application.
 I want my only textfield to  get focus when is displayed.
 I'm following the instructions provided at:

 http://tapestry.apache.org/tapestry4.1/components/general/script.html

 The template of the page including the component has @Shell and @Body
 specified.
 My component looks like this:

 html
 head
 titleMET Online/title
 meta http-equiv=Content-Type content=text/html; charset=ISO-8859-1
 link href=css/stile_palmare.css rel=stylesheet type=text/css
 /head
 body
  span jwcid=@Script
 script=/it/archimede/met/metgestioneingressi/tapestry/scripts/FormFocus.script