IPropertySelectionModel

[Gregg D Bolinger <gt...@gmail.com>]

I am having a hard time wrapping my head around the proper way to create a 
select list of items. I need to have a value/label so that the value is the 
database key and the label is a simple String.

I've looked at the example in the vlib that is in the 4.0 alpha distro. I 
understand how the EntitySelectionModel works but I'd just like to know if 
this is:

A. The *preferred* way and doing this and
B. does 4.0 provide any more convenience classes similar to 
StringSelectionModel that allows for the value/label pair to be used rather 
than rolling my own (which isn't that difficult anyway).

Thanks.

Gregg

Re: Simple loop for Select

[Harish Krishnaswamy <ha...@gmail.com>]

How about creating the array in OGNL and simply using the index in the loop ...

<span jwcid="@Foreach" source="new int[100]" index="ognl:idx">
    <option jwcid="@Option" label="ognl:idx" />
</span.

-Harish

On 5/10/05, Henry Chen <he...@gmail.com> wrote:
> Hi, I have a question about constructing a simple "SELECT" element.
> 
> For example, I need something like this:
> 
> <select>
>        <option value="1">1</option>
>        <option value="2">2</option>
>        <option value="3">3</option>
>        <option value="4">4</option>
>        <option value="5">5</option>
>                ...
>        <option value="100">100</option>
> </select>
> 
> I know @Foreach can do it but I still need to create an array for it. Is it
> possible that I can just loop an int variable and assign its value?
> 
> Thanks a lot.
> 
> Henry
> 
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> 
>

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Re: Simple loop for Select

[Paul Ferraro <pm...@columbia.edu>]

The Foreach component also accepts an iterator for its source 
parameter.  I use a custom Iterator implementation to achieve simple 
looping behavior:

<span jwcid="Foreach" source="ognl:new CounterIterator(1, 100)" 
...>...</span>

where CounterIterator is defined as:

public class CounterIterator implements Iterator
{
    private int index;
    private int max;

    public CounterIterator(int start, int max)
    {
       this.index = start;
       this.max = max;
    }

    public boolean hasNext()
    {
        return index <= max;
    }

    public Object next()
    {
        return new Integer(index++);
    }

    public void remove()
    {
        throw new UnsupportedOperationException();
    }
};

Henry Chen wrote:

>Hi, I have a question about constructing a simple "SELECT" element. 
>
>For example, I need something like this:
>
><select>
>	<option value="1">1</option>
>	<option value="2">2</option>
>	<option value="3">3</option>
>	<option value="4">4</option>
>	<option value="5">5</option>
>		...
>	<option value="100">100</option>
></select>
>
>I know @Foreach can do it but I still need to create an array for it. Is it
>possible that I can just loop an int variable and assign its value?
>
>Thanks a lot.
>
>Henry
>
>
>---------------------------------------------------------------------
>To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
>For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>
>  
>


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Simple loop for Select

[Henry Chen <he...@gmail.com>]

Hi, I have a question about constructing a simple "SELECT" element. 

For example, I need something like this:

<select>
	<option value="1">1</option>
	<option value="2">2</option>
	<option value="3">3</option>
	<option value="4">4</option>
	<option value="5">5</option>
		...
	<option value="100">100</option>
</select>

I know @Foreach can do it but I still need to create an array for it. Is it
possible that I can just loop an int variable and assign its value?

Thanks a lot.

Henry


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