I think you're doing a bit too much work here. StringResourceModel
allows you to pass in IModel objects as its "parameters" (check the
javadocs), so you could pass in an IModel that returns your "size"
parameter that is calculated at runtime.
On Fri, Jun 13, 2008 at 10:39 AM, Kaspar Fischer <[EMAIL PROTECTED]> wrote:
> Thanks a lot, James.
>
> I attach a simple class that makes it a little easier to work with
> such messages.
>
> On 13.06.2008, at 15:38, James Carman wrote:
>
>> The StringResourceModel uses MessageFormat patterns, so you could try
>> using a ChoiceFormat-based pattern. Try this out in a main method
>> somewhere to get an idea of what happens:
>>
>> final String pattern = "{0,choice,0#none|1#one|2#couple|2<many}";
>> System.out.println(MessageFormat.format(pattern, 0));
>> System.out.println(MessageFormat.format(pattern, 1));
>> System.out.println(MessageFormat.format(pattern, 2));
>> System.out.println(MessageFormat.format(pattern, 100));
>>
>>
>> On Fri, Jun 13, 2008 at 9:22 AM, Kaspar Fischer <[EMAIL PROTECTED]>
>> wrote:
>>>
>>> I frequently need to deal with singular and plural versions of
>>> wicket:message's.
>>> I would like to do something like:
>>>
>>> add(new Label("links", new PluralStringResourceModel("link", this)
>>> {
>>> @Override
>>> public boolean isPlural()
>>> {
>>> return /* some code like: */
>>> model.getObject().getChildren().size() > 1;
>>> }
>>> }));
>>>
>>> and this will use "link.plural" if isPlural() returns true and "link"
>>> otherwise.
>>>
>>> Has anybody found an elegant solution for such situations?
>>>
>>> P.S. Here is a working implementation (neither efficient nor elegant) for
>>> the above approach:
>>>
>>> add(new Label("link", new StringResourceModel("link${plural}",
>>> this, new Model<Serializable>()
>>> {
>>> @Override
>>> public Serializable getObject()
>>> {
>>> return new Serializable()
>>> {
>>> public String getPlural()
>>> {
>>> return model.getObject().getChildren().size() > 1 ?
>>> ".plural"
>>> : "";
>>> }
>>> };
>>> }
>>> })));
>
> /**
> * A simple wrapper around StringResourceModel to facilitate working with
> singular, plural, and
> * similar messages.
> * <p>
> * In the simplest case, you have a property
> <tt>website=Website{0,choice,0#|1<s}</tt> and
> * create a label like this:
> * <code>new Label<String>("website", new
> StringResourceModelWithCount("website", this) { public int getCount() {
> return size; } })</code>.
> *
> * @author hbf
> *
> */
> public abstract class StringResourceModelWithCount extends
> StringResourceModel
> {
> /**
> * See [EMAIL PROTECTED] StringResourceModel#StringResourceModel()}.
> *
> * @param resourceKey
> * @param component
> * @param model
> */
> public StringResourceModelWithCount(String resourceKey, Component<?>
> component, IModel<?> model)
> {
> // Construct
> super(resourceKey, component, model, new Object[] { new CountExecuter()
> });
>
> // Initialize
> ((CountExecuter) getParameters()[0]).target = this;
> }
>
> /**
> * Shorthand for <code>StringResourceModelWithCount(resourceKey, component,
> null)</code>.
> *
> * @param resourceKey
> * @param component
> * @param model
> */
> public StringResourceModelWithCount(String resourceKey, Component<?>
> component)
> {
> this(resourceKey, component, null);
> }
>
> /**
> * Subclasses should override this to return the number of items.
> *
> * @return
> */
> public abstract int getCount();
>
> /**
> * Helper class needed to make the actual call to [EMAIL PROTECTED]
> StringResourceModelWithCount#getCount()}.
> * (It is needed because in StringResourceModelWithCount's call
> <code>super(...)</code> as we
> * cannot reference the non-static method getCount() during construction.)
> */
> private static class CountExecuter extends Model<Integer>
> {
> private StringResourceModelWithCount target;
>
> @Override
> public Integer getObject()
> {
> return target.getCount();
> }
>
> }
> }
>
>
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