Hi,
thanks, I am getting the message "method does not override method from its
superclass."
The problem is that I do not have the callback method in this panel but in its
parent; I would need to have a getter method so that I can directly access the
resource link from the panel instance and change its visibility.
ResourceLink pl = new ResourceLink("pdfLink", new
ByteArrayResource("application/pdf") {
@Override
protected boolean isVisible() {
return ....;
}
});
Chris
> Am 09.05.2015 um 20:12 schrieb Tobias Soloschenko
> <tobiassolosche...@googlemail.com>:
>
> Yes - should work because isVisible is inherited from component:
>
> http://ci.apache.org/projects/wicket/apidocs/6.0.x/org/apache/wicket/markup/html/link/ResourceLink.html
>
> But watch out not to put in expensive calls in it! The user guide is also
> mentioning a lot about that topic:
>
> https://wicket.apache.org/guide/guide/bestpractices.html#bestpractices_5
>
> At this place it is good to mention the new location of the guide:
>
> http://ci.apache.org/projects/wicket/guide/6.x/
>
> http://ci.apache.org/projects/wicket/guide/7.x/
>
> kind regards
>
> Tobias
>
>> Am 09.05.2015 um 19:58 schrieb Chris <chris...@gmx.at>:
>>
>> Hi Tobias,
>>
>> thanks! Can the isVisible method be directly overridden also by a
>> ResourceLink?
>>
>> ResourceLink pl = new ResourceLink(..) {
>> protected boolean isVisible() {…}
>> }
>> Chris
>>
>>
>>> Am 09.05.2015 um 19:46 schrieb Tobias Soloschenko
>>> <tobiassolosche...@googlemail.com>:
>>>
>>> Hi,
>>>
>>> the constructor of your panel is only called at a normal request - you have
>>> to set the visibility of your link in the ajax callback via
>>> AjaxRequestTarget.
>>>
>>> 1. setOutputMarkupId and setOutputMarkupPlaceholder of the link to true (in
>>> your constructor)
>>>
>>> 2. set the visibility to your component in the callback method (based on
>>> your Model)
>>>
>>> 3. add the component to the AjaxRequestTarget so that it is updated
>>>
>>> Another solution would be to override the isVisible method and return the
>>> visibility based on your model and then only add the component to the
>>> AjaxRequestTarget.
>>>
>>> kind regards
>>>
>>> Tobias
>>>
>>>> Am 09.05.2015 um 19:29 schrieb Chris <chris...@gmx.at>:
>>>>
>>>> Hi all,
>>>>
>>>> currently, the visibility of the resource link is not updated when the
>>>> parent component of the panel is rendered again based on an ajax call.
>>>>
>>>> How can the visibility set dynamically based on the model’s data?
>>>>
>>>> Thanks, Chris
>>>>
>>>> public SomePanel(String id, final IModel<List<A>> model) {
>>>> super(id, model);
>>>>
>>>> ResourceLink pl = new ResourceLink("pdfLink", new
>>>> ByteArrayResource("application/pdf") {...}
>>>> pl.setVisible(routingModel.getObject().get(0).getElements().size() > 0);
>>>> ...
>>>> }
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