Re: Loop and iterator

[Thiago H de Paula Figueiredo]

On Thu, 30 Jan 2014 00:31:35 -0200, Bob Harner  wrote:


You mean as a mixin applied to the Loop component? I guess so, but I
don't see how that would make it any better.


I love mixins! :) And your component doesn't really generate content by  
itself (it just rewrites what some other does), and in this scenario I  
always go for a mixin.


--
Thiago H. de Paula Figueiredo
Tapestry, Java and Hibernate consultant and developer
http://machina.com.br

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Re: Loop and iterator

[Lance Java]

You can use two loops. Example here:

http://tapestry-stitch.uklance.cloudbees.net/gallerydemo
 On 29 Jan 2014 16:12, "Dimitris Zenios"  wrote:

> Is it possible to make the loop component expose the iterator through a
> public method?
>
> There are situations where a mixin might want to use it.
>
> Best Regards
> Dimitris Zenios
>

Re: Loop and iterator

[Bob Harner]

You mean as a mixin applied to the Loop component? I guess so, but I
don't see how that would make it any better.


${item.name}


Although that is a tiny bit more compact, I don't think it is as
clean, nor as general. Or maybe I misunderstand you.


On Wed, Jan 29, 2014 at 8:15 PM, Thiago H de Paula Figueiredo
 wrote:
> Nice implementation! :) But shouldn't this be better writen a mixin?
>
>
> On Wed, 29 Jan 2014 19:57:19 -0200, Bob Harner  wrote:
>
>> Maybe this handy little component will help:
>>
>> /**
>>  * A Tapestry component that rearranges the HTML items in its body into
>> multiple
>>  * columns. It accomplishes this by DOM manipulation after the body is
>> rendered
>>  * to the DOM.
>>  * 
>>  * Note: For this to work properly, the items that you wrap this component
>>  * around must each consist of a single HTML element (possibly with nested
>>  * elements). For example, the following works, because each item is
>> contained
>>  * within a single 
 element:
>>  *
>>  * 
>>  * 
>>  * 
>>  * 
Name:{$oneItem.name}
>>  * 
>>  * 
>>  * 
>>  *
>>  * But the following fails to lay out property, because there are two HTML
>>  * elements -- a span and a br -- per item:
>>  *
>>  * 
>>  * 
>>  * 
>>  * ${oneItem.name}

>>  * 
>>  * 
>>  * 
>>  */
>> @SupportsInformalParameters
>> public class Columns {
>> /**
>>  * The number of columns to divide the items into
>>  */
>> @Property
>> @Parameter(value="5", defaultPrefix="literal")
>> private int number;
>>
>> @Property
>> @Parameter(value="literal:t-column")
>> private String columnClass;
>>
>> @Inject
>> private ComponentResources componentResources;
>>
>> /**
>>  * Manipulate the Tapestry-rendered DOM to insert as many DIV elements
>> as
>>  * needed to break up the list of items in our "body" into the
>> requested
>>  * number of columns. This method is only called after the "body" is
>>  * rendered into the DOM.
>>  *
>>  * @param writer
>>  */
>> @AfterRenderBody
>> void manipulateTheDom(MarkupWriter writer)
>> {
>> Element container = writer.getElement();
>>
>> // figure out how many items should go into each column
>>
>> List children = container.getChildren();
>> int numChildren = children.size();
>> int itemsPerColumn = numChildren / number;
>> int remainder = numChildren % number;
>> int itemNum = 0;
>>
>> // render informal parameters into the container element
>> componentResources.renderInformalParameters(writer);
>>
>> for (int columnNumber = 0; columnNumber < number; columnNumber++)
>> {
>> int extras = (remainder > 0) ? 1 : 0;
>> remainder--;
>> int numItemsthisColumn = itemsPerColumn + extras;
>>
>> // Make a per-column wrapper element and move it to the bottom
>> Element columnElement = container.element("div", "class",
>> columnClass);
>> columnElement.moveToBottom(container);
>>
>> // move some children into the new column wrapper element
>> for (int i = 0; i < numItemsthisColumn; i++)
>> {
>> children.get(itemNum).moveToBottom(columnElement);
>> itemNum++;
>> }
>> }
>> }
>> }
>>
>> On Wed, Jan 29, 2014 at 3:28 PM, Thiago H de Paula Figueiredo
>>  wrote:
>>>
>>> On Wed, 29 Jan 2014 17:58:08 -0200, Dimitris Zenios
>>>  wrote:
>>>
 I am not sure whether i will be able to cast to collection.Maybe
 tapestry
 is doing some magic with BindParameter.
>>>
>>>
>>>
>>> You don't need to cast it to a Collection, because Iterable is exactly
>>> the
>>> Java interface implemented by any class which provides an Iterator. Just
>>> use
>>> Iterable and its iterator() method directly.
>>>
>>>
>>> --
>>> Thiago H. de Paula Figueiredo
>>> Tapestry, Java and Hibernate consultant and developer
>>> http://machina.com.br
>>>
>>> -
>>> To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
>>> For additional commands, e-mail: dev-h...@tapestry.apache.org
>>>
>>
>> -
>> To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
>> For additional commands, e-mail: dev-h...@tapestry.apache.org
>>
>
>
> --
> Thiago H. de Paula Figueiredo
> Tapestry, Java and Hibernate consultant and developer
> http://machina.com.br
>
> -
> To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> For additional commands, e-mail: d

Re: Loop and iterator

[Thiago H de Paula Figueiredo]

Nice implementation! :) But shouldn't this be better writen a mixin?

On Wed, 29 Jan 2014 19:57:19 -0200, Bob Harner  wrote:


Maybe this handy little component will help:

/**
 * A Tapestry component that rearranges the HTML items in its body into  
multiple
 * columns. It accomplishes this by DOM manipulation after the body is  
rendered

 * to the DOM.
 * 
 * Note: For this to work properly, the items that you wrap this  
component
 * around must each consist of a single HTML element (possibly with  
nested
 * elements). For example, the following works, because each item is  
contained

 * within a single 
 element:
 *
 * 
 * 
 * 
 * 
Name:{$oneItem.name}
 * 
 * 
 * 
 *
 * But the following fails to lay out property, because there are two  
HTML

 * elements -- a span and a br -- per item:
 *
 * 
 * 
 * 
 * ${oneItem.name}

 * 
 * 
 * 
 */
@SupportsInformalParameters
public class Columns {
/**
 * The number of columns to divide the items into
 */
@Property
@Parameter(value="5", defaultPrefix="literal")
private int number;

@Property
@Parameter(value="literal:t-column")
private String columnClass;

@Inject
private ComponentResources componentResources;

/**
 * Manipulate the Tapestry-rendered DOM to insert as many DIV  
elements as
 * needed to break up the list of items in our "body" into the  
requested

 * number of columns. This method is only called after the "body" is
 * rendered into the DOM.
 *
 * @param writer
 */
@AfterRenderBody
void manipulateTheDom(MarkupWriter writer)
{
Element container = writer.getElement();

// figure out how many items should go into each column

List children = container.getChildren();
int numChildren = children.size();
int itemsPerColumn = numChildren / number;
int remainder = numChildren % number;
int itemNum = 0;

// render informal parameters into the container element
componentResources.renderInformalParameters(writer);

for (int columnNumber = 0; columnNumber < number; columnNumber++)
{
int extras = (remainder > 0) ? 1 : 0;
remainder--;
int numItemsthisColumn = itemsPerColumn + extras;

// Make a per-column wrapper element and move it to the  
bottom

Element columnElement = container.element("div", "class",
columnClass);
columnElement.moveToBottom(container);

// move some children into the new column wrapper element
for (int i = 0; i < numItemsthisColumn; i++)
{
children.get(itemNum).moveToBottom(columnElement);
itemNum++;
}
}
}
}

On Wed, Jan 29, 2014 at 3:28 PM, Thiago H de Paula Figueiredo
 wrote:

On Wed, 29 Jan 2014 17:58:08 -0200, Dimitris Zenios
 wrote:

I am not sure whether i will be able to cast to collection.Maybe  
tapestry

is doing some magic with BindParameter.



You don't need to cast it to a Collection, because Iterable is exactly  
the
Java interface implemented by any class which provides an Iterator.  
Just use

Iterable and its iterator() method directly.


--
Thiago H. de Paula Figueiredo
Tapestry, Java and Hibernate consultant and developer
http://machina.com.br

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Tapestry, Java and Hibernate consultant and developer
http://machina.com.br

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Re: Loop and iterator

[Dimitris Zenios]

Nice one Bob.I think these solves my problem


On Thu, Jan 30, 2014 at 12:08 AM, Bob Harner  wrote:

> If you use that Columns component you'll also need some CSS:
>
> DIV.t-column {
> float: left;
> padding: 1em;
> }
>
> Or, you can use a different CSS class name (other than t-column) by
> passing the class name as a component parameter:
>
> 
> 
> ${item.name}
> 
> 
>
> On Wed, Jan 29, 2014 at 4:57 PM, Bob Harner  wrote:
> > Maybe this handy little component will help:
> >
> > /**
> >  * A Tapestry component that rearranges the HTML items in its body into
> multiple
> >  * columns. It accomplishes this by DOM manipulation after the body is
> rendered
> >  * to the DOM.
> >  * 
> >  * Note: For this to work properly, the items that you wrap this
> component
> >  * around must each consist of a single HTML element (possibly with
> nested
> >  * elements). For example, the following works, because each item is
> contained
> >  * within a single 
 element:
> >  *
> >  * 
> >  * 
> >  * 
> >  * 
Name:{$oneItem.name}
> >  * 
> >  * 
> >  * 
> >  *
> >  * But the following fails to lay out property, because there are two
> HTML
> >  * elements -- a span and a br -- per item:
> >  *
> >  * 
> >  * 
> >  * 
> >  * ${oneItem.name}

> >  * 
> >  * 
> >  * 
> >  */
> > @SupportsInformalParameters
> > public class Columns {
> > /**
> >  * The number of columns to divide the items into
> >  */
> > @Property
> > @Parameter(value="5", defaultPrefix="literal")
> > private int number;
> >
> > @Property
> > @Parameter(value="literal:t-column")
> > private String columnClass;
> >
> > @Inject
> > private ComponentResources componentResources;
> >
> > /**
> >  * Manipulate the Tapestry-rendered DOM to insert as many DIV
> elements as
> >  * needed to break up the list of items in our "body" into the
> requested
> >  * number of columns. This method is only called after the "body" is
> >  * rendered into the DOM.
> >  *
> >  * @param writer
> >  */
> > @AfterRenderBody
> > void manipulateTheDom(MarkupWriter writer)
> > {
> > Element container = writer.getElement();
> >
> > // figure out how many items should go into each column
> >
> > List children = container.getChildren();
> > int numChildren = children.size();
> > int itemsPerColumn = numChildren / number;
> > int remainder = numChildren % number;
> > int itemNum = 0;
> >
> > // render informal parameters into the container element
> > componentResources.renderInformalParameters(writer);
> >
> > for (int columnNumber = 0; columnNumber < number; columnNumber++)
> > {
> > int extras = (remainder > 0) ? 1 : 0;
> > remainder--;
> > int numItemsthisColumn = itemsPerColumn + extras;
> >
> > // Make a per-column wrapper element and move it to the
> bottom
> > Element columnElement = container.element("div", "class",
> > columnClass);
> > columnElement.moveToBottom(container);
> >
> > // move some children into the new column wrapper element
> > for (int i = 0; i < numItemsthisColumn; i++)
> > {
> > children.get(itemNum).moveToBottom(columnElement);
> > itemNum++;
> > }
> > }
> > }
> > }
> >
> > On Wed, Jan 29, 2014 at 3:28 PM, Thiago H de Paula Figueiredo
> >  wrote:
> >> On Wed, 29 Jan 2014 17:58:08 -0200, Dimitris Zenios
> >>  wrote:
> >>
> >>> I am not sure whether i will be able to cast to collection.Maybe
> tapestry
> >>> is doing some magic with BindParameter.
> >>
> >>
> >> You don't need to cast it to a Collection, because Iterable is exactly
> the
> >> Java interface implemented by any class which provides an Iterator.
> Just use
> >> Iterable and its iterator() method directly.
> >>
> >>
> >> --
> >> Thiago H. de Paula Figueiredo
> >> Tapestry, Java and Hibernate consultant and developer
> >> http://machina.com.br
> >>
> >> -
> >> To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> >> For additional commands, e-mail: dev-h...@tapestry.apache.org
> >>
>
> -
> To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> For additional commands, e-mail: dev-h...@tapestry.apache.org
>
>

Re: Loop and iterator

[Bob Harner]

If you use that Columns component you'll also need some CSS:

DIV.t-column {
float: left;
padding: 1em;
}

Or, you can use a different CSS class name (other than t-column) by
passing the class name as a component parameter:



${item.name}



On Wed, Jan 29, 2014 at 4:57 PM, Bob Harner  wrote:
> Maybe this handy little component will help:
>
> /**
>  * A Tapestry component that rearranges the HTML items in its body into 
> multiple
>  * columns. It accomplishes this by DOM manipulation after the body is 
> rendered
>  * to the DOM.
>  * 
>  * Note: For this to work properly, the items that you wrap this component
>  * around must each consist of a single HTML element (possibly with nested
>  * elements). For example, the following works, because each item is contained
>  * within a single 
 element:
>  *
>  * 
>  * 
>  * 
>  * 
Name:{$oneItem.name}
>  * 
>  * 
>  * 
>  *
>  * But the following fails to lay out property, because there are two HTML
>  * elements -- a span and a br -- per item:
>  *
>  * 
>  * 
>  * 
>  * ${oneItem.name}

>  * 
>  * 
>  * 
>  */
> @SupportsInformalParameters
> public class Columns {
> /**
>  * The number of columns to divide the items into
>  */
> @Property
> @Parameter(value="5", defaultPrefix="literal")
> private int number;
>
> @Property
> @Parameter(value="literal:t-column")
> private String columnClass;
>
> @Inject
> private ComponentResources componentResources;
>
> /**
>  * Manipulate the Tapestry-rendered DOM to insert as many DIV elements as
>  * needed to break up the list of items in our "body" into the requested
>  * number of columns. This method is only called after the "body" is
>  * rendered into the DOM.
>  *
>  * @param writer
>  */
> @AfterRenderBody
> void manipulateTheDom(MarkupWriter writer)
> {
> Element container = writer.getElement();
>
> // figure out how many items should go into each column
>
> List children = container.getChildren();
> int numChildren = children.size();
> int itemsPerColumn = numChildren / number;
> int remainder = numChildren % number;
> int itemNum = 0;
>
> // render informal parameters into the container element
> componentResources.renderInformalParameters(writer);
>
> for (int columnNumber = 0; columnNumber < number; columnNumber++)
> {
> int extras = (remainder > 0) ? 1 : 0;
> remainder--;
> int numItemsthisColumn = itemsPerColumn + extras;
>
> // Make a per-column wrapper element and move it to the bottom
> Element columnElement = container.element("div", "class",
> columnClass);
> columnElement.moveToBottom(container);
>
> // move some children into the new column wrapper element
> for (int i = 0; i < numItemsthisColumn; i++)
> {
> children.get(itemNum).moveToBottom(columnElement);
> itemNum++;
> }
> }
> }
> }
>
> On Wed, Jan 29, 2014 at 3:28 PM, Thiago H de Paula Figueiredo
>  wrote:
>> On Wed, 29 Jan 2014 17:58:08 -0200, Dimitris Zenios
>>  wrote:
>>
>>> I am not sure whether i will be able to cast to collection.Maybe tapestry
>>> is doing some magic with BindParameter.
>>
>>
>> You don't need to cast it to a Collection, because Iterable is exactly the
>> Java interface implemented by any class which provides an Iterator. Just use
>> Iterable and its iterator() method directly.
>>
>>
>> --
>> Thiago H. de Paula Figueiredo
>> Tapestry, Java and Hibernate consultant and developer
>> http://machina.com.br
>>
>> -
>> To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
>> For additional commands, e-mail: dev-h...@tapestry.apache.org
>>

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Re: Loop and iterator

[Bob Harner]

Maybe this handy little component will help:

/**
 * A Tapestry component that rearranges the HTML items in its body into multiple
 * columns. It accomplishes this by DOM manipulation after the body is rendered
 * to the DOM.
 * 
 * Note: For this to work properly, the items that you wrap this component
 * around must each consist of a single HTML element (possibly with nested
 * elements). For example, the following works, because each item is contained
 * within a single 
 element:
 *
 * 
 * 
 * 
 * 
Name:{$oneItem.name}
 * 
 * 
 * 
 *
 * But the following fails to lay out property, because there are two HTML
 * elements -- a span and a br -- per item:
 *
 * 
 * 
 * 
 * ${oneItem.name}

 * 
 * 
 * 
 */
@SupportsInformalParameters
public class Columns {
/**
 * The number of columns to divide the items into
 */
@Property
@Parameter(value="5", defaultPrefix="literal")
private int number;

@Property
@Parameter(value="literal:t-column")
private String columnClass;

@Inject
private ComponentResources componentResources;

/**
 * Manipulate the Tapestry-rendered DOM to insert as many DIV elements as
 * needed to break up the list of items in our "body" into the requested
 * number of columns. This method is only called after the "body" is
 * rendered into the DOM.
 *
 * @param writer
 */
@AfterRenderBody
void manipulateTheDom(MarkupWriter writer)
{
Element container = writer.getElement();

// figure out how many items should go into each column

List children = container.getChildren();
int numChildren = children.size();
int itemsPerColumn = numChildren / number;
int remainder = numChildren % number;
int itemNum = 0;

// render informal parameters into the container element
componentResources.renderInformalParameters(writer);

for (int columnNumber = 0; columnNumber < number; columnNumber++)
{
int extras = (remainder > 0) ? 1 : 0;
remainder--;
int numItemsthisColumn = itemsPerColumn + extras;

// Make a per-column wrapper element and move it to the bottom
Element columnElement = container.element("div", "class",
columnClass);
columnElement.moveToBottom(container);

// move some children into the new column wrapper element
for (int i = 0; i < numItemsthisColumn; i++)
{
children.get(itemNum).moveToBottom(columnElement);
itemNum++;
}
}
}
}

On Wed, Jan 29, 2014 at 3:28 PM, Thiago H de Paula Figueiredo
 wrote:
> On Wed, 29 Jan 2014 17:58:08 -0200, Dimitris Zenios
>  wrote:
>
>> I am not sure whether i will be able to cast to collection.Maybe tapestry
>> is doing some magic with BindParameter.
>
>
> You don't need to cast it to a Collection, because Iterable is exactly the
> Java interface implemented by any class which provides an Iterator. Just use
> Iterable and its iterator() method directly.
>
>
> --
> Thiago H. de Paula Figueiredo
> Tapestry, Java and Hibernate consultant and developer
> http://machina.com.br
>
> -
> To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> For additional commands, e-mail: dev-h...@tapestry.apache.org
>

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Re: Loop and iterator

[Thiago H de Paula Figueiredo]

On Wed, 29 Jan 2014 17:21:31 -0200, Dimitris Zenios  
 wrote:



3.Dom rewriting ( Javascript ? )


Nope. Using void afterRender(MarkupWriter writer) in your mixin.

writer.getDocument() returns the Tapestry Document object. You can  
manipulate its Elements any way you want.


--
Thiago H. de Paula Figueiredo
Tapestry, Java and Hibernate consultant and developer
http://machina.com.br

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Re: Loop and iterator

[Thiago H de Paula Figueiredo]

On Wed, 29 Jan 2014 17:58:08 -0200, Dimitris Zenios  
 wrote:



I am not sure whether i will be able to cast to collection.Maybe tapestry
is doing some magic with BindParameter.


You don't need to cast it to a Collection, because Iterable is exactly the  
Java interface implemented by any class which provides an Iterator. Just  
use Iterable and its iterator() method directly.


--
Thiago H. de Paula Figueiredo
Tapestry, Java and Hibernate consultant and developer
http://machina.com.br

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

Re: Loop and iterator

[Thiago H de Paula Figueiredo]

On Wed, 29 Jan 2014 17:07:13 -0200, Lenny Primak   
wrote:



What about something similar to varStatus in jsf?


No need for that. You already have the index and value parameters.

--
Thiago H. de Paula Figueiredo
Tapestry, Java and Hibernate consultant and developer
http://machina.com.br

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To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
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Re: Loop and iterator

[Dimitris Zenios]

I am not sure whether i will be able to cast to collection.Maybe tapestry
is doing some magic with BindParameter.


On Wed, Jan 29, 2014 at 9:47 PM, Ville Virtanen <
ville.virta...@orientimport.fi> wrote:

> OK, got it. I thought the source param was collection.
>
> You always could (pseudocode)
>
> if (values instanceof Collection) {
>   return ((Collection) source).size();
> } else {
>   it = source.iterator();
>   while (it.hasNext()) {
> it.next();
> sum++;
>   }
>   return sum;
> }
>
> Ville
>
> -Alkuperäinen viesti-
> Lähettäjä: Dimitris Zenios [mailto:dimitris.zen...@gmail.com]
> Lähetetty: 29. tammikuuta 2014 21:38
> Vastaanottaja: Tapestry development
> Aihe: Re: Loop and iterator
>
> Yes but i cannot access the Iterator since is a private variable.Also the
> source parameter is declared as Iterable.I am not sure whether i am able to
> cast iterable to to List in order to get size.I think no
>
>
> On Wed, Jan 29, 2014 at 9:32 PM, Ville Virtanen <
> ville.virta...@orientimport.fi> wrote:
>
> > Take a look at
> >
> > @BindParameter
> >
> > http://tapestry.apache.org/component-mixins.html --> Look for "Binding
> > the parameter of the core component"
> >
> > You can access all component parameters in the mixin
> >
> > Ville Virtanen
> >
> >
> > -----Alkuperäinen viesti-
> > Lähettäjä: Dimitris Zenios [mailto:dimitris.zen...@gmail.com]
> > Lähetetty: 29. tammikuuta 2014 21:22
> > Vastaanottaja: Tapestry development
> > Aihe: Re: Loop and iterator
> >
> > 1.Passing the collection to the mixin and the component is one
> > solution but i doesn'`t feel nice.I never had to pass the same
> > parameter twice 2.Regarding render variables i don't see where these
> > will help in my situation 3.Dom rewriting ( Javascript ? )
> >
> > On Wed, Jan 29, 2014 at 9:10 PM, Ville Virtanen <
> > ville.virta...@orientimport.fi> wrote:
> >
> > > Hi,
> > >
> > > you can pass mixins parameters, so you could pass the original
> > > collection you're iterating over with the loop to the mixin also,
> > > and compare if the
> > > collection.size() == index
> > >
> > > http://tapestry.apache.org/component-mixins.html Look for "Mixin
> > > Parameters".
> > >
> > > Ville
> > >
> > > -Alkuperäinen viesti-
> > > Lähettäjä: Thiago H de Paula Figueiredo [mailto:thiag...@gmail.com]
> > > Lähetetty: 29. tammikuuta 2014 21:02
> > > Vastaanottaja: Tapestry development
> > > Aihe: Re: Loop and iterator
> > >
> > > On Wed, 29 Jan 2014 16:17:49 -0200, Dimitris Zenios <
> > > dimitris.zen...@gmail.com> wrote:
> > >
> > > > I have a list of 8 elements.I want to loop over the elements and
> > > > every
> > > > 3 elements or at beginning of list to Start with a  and end
> > > > with a .
> > > >
> > > > Resulting output should be
> > > > 
> > > > 
> > > > 
> > > >  > > > 
> > > > 
> > > > 
> > > > 
> > > > 
> > > > 
> > > > 
> > > > 
> > > > 
> > > >  > > >
> > > > So i though i will create a mixin that attaches to the loop and
> > > > adds those divs.I managed to almost make it work except one last
> > > > case.After the last element i want to close my previous div even
> > > > if the index is not % 3.In order to know that loop is in the last
> > > > element i need the iterator of the loop.
> > >
> > > I'd use pure DOM rewriting instead. tapestry-xpath is extremely
> > > helpful for these situations. Don't expect the Tapestry team to
> > > expose implementation details: they don't like it.
> > >
> > > --
> > > Thiago H. de Paula Figueiredo
> > > Tapestry, Java and Hibernate consultant and developer
> > > http://machina.com.br
> > >
> > > 
> > > - To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> > > For additional commands, e-mail: dev-h...@tapestry.apache.org
> > >
> > >
> > >
> > > 
> > > - To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> > > For additional commands, e-mail: dev-h...@tapestry.apache.org
> > >
> > >
> >
> >
> > -
> > To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> > For additional commands, e-mail: dev-h...@tapestry.apache.org
> >
> >
>
>
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>
>

Re: Loop and iterator

[Dimitris Zenios]

Yes but i cannot access the Iterator since is a private variable.Also the
source parameter is declared as Iterable.I am not sure whether i am able to
cast iterable to to List in order to get size.I think no


On Wed, Jan 29, 2014 at 9:32 PM, Ville Virtanen <
ville.virta...@orientimport.fi> wrote:

> Take a look at
>
> @BindParameter
>
> http://tapestry.apache.org/component-mixins.html --> Look for "Binding the
> parameter of the core component"
>
> You can access all component parameters in the mixin
>
> Ville Virtanen
>
>
> -Alkuperäinen viesti-
> Lähettäjä: Dimitris Zenios [mailto:dimitris.zen...@gmail.com]
> Lähetetty: 29. tammikuuta 2014 21:22
> Vastaanottaja: Tapestry development
> Aihe: Re: Loop and iterator
>
> 1.Passing the collection to the mixin and the component is one solution but
> i doesn'`t feel nice.I never had to pass the same parameter twice
> 2.Regarding render variables i don't see where these will help in my
> situation 3.Dom rewriting ( Javascript ? )
>
> On Wed, Jan 29, 2014 at 9:10 PM, Ville Virtanen <
> ville.virta...@orientimport.fi> wrote:
>
> > Hi,
> >
> > you can pass mixins parameters, so you could pass the original
> > collection you're iterating over with the loop to the mixin also, and
> > compare if the
> > collection.size() == index
> >
> > http://tapestry.apache.org/component-mixins.html Look for "Mixin
> > Parameters".
> >
> > Ville
> >
> > -Alkuperäinen viesti-
> > Lähettäjä: Thiago H de Paula Figueiredo [mailto:thiag...@gmail.com]
> > Lähetetty: 29. tammikuuta 2014 21:02
> > Vastaanottaja: Tapestry development
> > Aihe: Re: Loop and iterator
> >
> > On Wed, 29 Jan 2014 16:17:49 -0200, Dimitris Zenios <
> > dimitris.zen...@gmail.com> wrote:
> >
> > > I have a list of 8 elements.I want to loop over the elements and
> > > every
> > > 3 elements or at beginning of list to Start with a  and end
> > > with a .
> > >
> > > Resulting output should be
> > > 
> > > 
> > > 
> > >  > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > >  > >
> > > So i though i will create a mixin that attaches to the loop and adds
> > > those divs.I managed to almost make it work except one last
> > > case.After the last element i want to close my previous div even if
> > > the index is not % 3.In order to know that loop is in the last
> > > element i need the iterator of the loop.
> >
> > I'd use pure DOM rewriting instead. tapestry-xpath is extremely
> > helpful for these situations. Don't expect the Tapestry team to expose
> > implementation details: they don't like it.
> >
> > --
> > Thiago H. de Paula Figueiredo
> > Tapestry, Java and Hibernate consultant and developer
> > http://machina.com.br
> >
> > -
> > To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> > For additional commands, e-mail: dev-h...@tapestry.apache.org
> >
> >
> >
> > -
> > To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> > For additional commands, e-mail: dev-h...@tapestry.apache.org
> >
> >
>
>
> -
> To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> For additional commands, e-mail: dev-h...@tapestry.apache.org
>
>

Re: Loop and iterator

[Dimitris Zenios]

1.Passing the collection to the mixin and the component is one solution but
i doesn'`t feel nice.I never had to pass the same parameter twice
2.Regarding render variables i don't see where these will help in my
situation
3.Dom rewriting ( Javascript ? )

On Wed, Jan 29, 2014 at 9:10 PM, Ville Virtanen <
ville.virta...@orientimport.fi> wrote:

> Hi,
>
> you can pass mixins parameters, so you could pass the original collection
> you're iterating over with the loop to the mixin also, and compare if the
> collection.size() == index
>
> http://tapestry.apache.org/component-mixins.html Look for "Mixin
> Parameters".
>
> Ville
>
> -Alkuperäinen viesti-
> Lähettäjä: Thiago H de Paula Figueiredo [mailto:thiag...@gmail.com]
> Lähetetty: 29. tammikuuta 2014 21:02
> Vastaanottaja: Tapestry development
> Aihe: Re: Loop and iterator
>
> On Wed, 29 Jan 2014 16:17:49 -0200, Dimitris Zenios <
> dimitris.zen...@gmail.com> wrote:
>
> > I have a list of 8 elements.I want to loop over the elements and every
> > 3 elements or at beginning of list to Start with a  and end with
> > a .
> >
> > Resulting output should be
> > 
> > 
> > 
> >  > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> >  >
> > So i though i will create a mixin that attaches to the loop and adds
> > those divs.I managed to almost make it work except one last case.After
> > the last element i want to close my previous div even if the index is
> > not % 3.In order to know that loop is in the last element i need the
> > iterator of the loop.
>
> I'd use pure DOM rewriting instead. tapestry-xpath is extremely helpful
> for these situations. Don't expect the Tapestry team to expose
> implementation details: they don't like it.
>
> --
> Thiago H. de Paula Figueiredo
> Tapestry, Java and Hibernate consultant and developer
> http://machina.com.br
>
> -
> To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> For additional commands, e-mail: dev-h...@tapestry.apache.org
>
>
>
> -
> To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> For additional commands, e-mail: dev-h...@tapestry.apache.org
>
>

Re: Loop and iterator

[Lenny Primak]

What about something similar to varStatus in jsf?



> On Jan 29, 2014, at 2:01 PM, "Thiago H de Paula Figueiredo" 
>  wrote:
> 
>> On Wed, 29 Jan 2014 16:17:49 -0200, Dimitris Zenios 
>>  wrote:
>> 
>> I have a list of 8 elements.I want to loop over the elements and every 3
>> elements or at beginning of list to Start with a  and end with a
>> .
>> 
>> Resulting output should be
>> 
>> 
>> 
>> > 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> > 
>> So i though i will create a mixin that attaches to the loop and adds those
>> divs.I managed to almost make it work except one last case.After the last
>> element i want to close my previous div even if the index is not % 3.In
>> order to know that loop is in the last element i need the iterator of the
>> loop.
> 
> I'd use pure DOM rewriting instead. tapestry-xpath is extremely helpful for 
> these situations. Don't expect the Tapestry team to expose implementation 
> details: they don't like it.
> 
> -- 
> Thiago H. de Paula Figueiredo
> Tapestry, Java and Hibernate consultant and developer
> http://machina.com.br
> 
> -
> To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> For additional commands, e-mail: dev-h...@tapestry.apache.org
> 

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Re: Loop and iterator

[Thiago H de Paula Figueiredo]

On Wed, 29 Jan 2014 16:17:49 -0200, Dimitris Zenios  
 wrote:



I have a list of 8 elements.I want to loop over the elements and every 3
elements or at beginning of list to Start with a  and end with a
.

Resulting output should be












So i though i will create a mixin that attaches to the loop and adds  
those

divs.I managed to almost make it work except one last case.After the last
element i want to close my previous div even if the index is not % 3.In
order to know that loop is in the last element i need the iterator of the
loop.


I'd use pure DOM rewriting instead. tapestry-xpath is extremely helpful  
for these situations. Don't expect the Tapestry team to expose  
implementation details: they don't like it.


--
Thiago H. de Paula Figueiredo
Tapestry, Java and Hibernate consultant and developer
http://machina.com.br

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Re: Loop and iterator

[Dimitris Zenios]

I have a list of 8 elements.I want to loop over the elements and every 3
elements or at beginning of list to Start with a  and end with a
.

Resulting output should be












 wrote:

> On Wed, 29 Jan 2014 14:10:53 -0200, Dimitris Zenios <
> dimitris.zen...@gmail.com> wrote:
>
>  Is it possible to make the loop component expose the iterator through a
>> public method?
>>
>> There are situations where a mixin might want to use it.
>>
>
> Which ones? Never needed it.
>
> --
> Thiago H. de Paula Figueiredo
> Tapestry, Java and Hibernate consultant and developer
> http://machina.com.br
>
> -
> To unsubscribe, e-mail: dev-unsubscr...@tapestry.apache.org
> For additional commands, e-mail: dev-h...@tapestry.apache.org
>
>

Re: Loop and iterator

[Thiago H de Paula Figueiredo]

On Wed, 29 Jan 2014 14:10:53 -0200, Dimitris Zenios  
 wrote:



Is it possible to make the loop component expose the iterator through a
public method?

There are situations where a mixin might want to use it.


Which ones? Never needed it.

--
Thiago H. de Paula Figueiredo
Tapestry, Java and Hibernate consultant and developer
http://machina.com.br

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