Actually WorldClockPage shows a nice usage of lambdas where a single
argument makes it easy to forward the click:
add(AjaxLink.onClick("stop", timer::stop));
So I've added back a factory method for a (non-Bi)Consumer, so now we
have two:
static <T> AjaxLink<T> onClick(String id,
WicketConsumer<AjaxRequestTarget> onClick)
static <T> AjaxLink<T> onClick(String id,
WicketBiConsumer<AjaxLink<T>, AjaxRequestTarget> onClick)
Hopefully we don't have to add all sorts of argument combinations :/.
Sven
On 16.06.2016 08:06, Sven Meier wrote:
Hi all,
IMHO all lambdas used for component creation would benefit from
getting a reference to the actual component, i.e.:
static <T> AjaxLink<T> ajaxLink(String id,
WicketBiConsumer<AjaxLink<T>, AjaxRequestTarget> onClick)
static AjaxButton ajaxButton(String id, WicketBiConsumer<AjaxButton,
AjaxRequestTarget> onSubmit)
static AjaxButton ajaxButton(String id, WicketBiConsumer<AjaxButton,
AjaxRequestTarget> onSubmit, WicketBiConsumer<AjaxButton,
AjaxRequestTarget> onError)
static AjaxCheckBox ajaxCheckBox(String id,
WicketBiConsumer<AjaxCheckBox, AjaxRequestTarget> onUpdate)
static AjaxSubmitLink ajaxSubmitLink(String id,
WicketBiConsumer<AjaxSubmitLink, AjaxRequestTarget> onSubmit)
static AjaxSubmitLink ajaxSubmitLink(String id,
WicketBiConsumer<AjaxSubmitLink, AjaxRequestTarget> onSubmit,
WicketBiConsumer<AjaxSubmitLink, AjaxRequestTarget> onError)
static <T> Link<T> link(String id, WicketConsumer<Link<T>> onClick)
Their usage is still nice to read and (with the help of your IDE)
manageable to write:
add(Link.onClick("adminAnnotInternalLink", link ->
setResponsePage(new AdminAnnotationsInternalPage("bar"))));
I've changed the factory methods, let me know if you don't like it.
Sven
On 15.06.2016 19:06, Sven Meier wrote:
Hi,
for this 'corner case' we might just as well pass in the link as
argument:
public static <T> Link<T> onClick(String id,
WicketConsumer<Link<T>> onClick)
add(Link.onClick("adminAnnotInternalLink", link -> ...));
This might be handy if you want to do something with the link
(update, replace, etc.)
Have fun
Sven
On 15.06.2016 12:45, Martin Grigorov wrote:
Hi,
I've started refactoring wicket-examples to use more of the Java 8
functionalities in Wicket and
I've found a problem with Link#onClick(String, WicketConsumer<Void>)
method.
See
https://github.com/apache/wicket/commit/5d87f50646d13d858eab69d7892075be8cdb1dbd#diff-0419829765d01bcc9911c318ea9bba4e
Here I needed to use "(ignoreme)" as an input for the lambda to make it
compileable.
The problem is that Java 8 doesn't provide Consumer without an input.
Here is a discussion about this:
http://programmers.stackexchange.com/questions/276859/what-is-the-name-of-a-function-that-takes-no-argument-and-returns-nothing
Shall we introduce our own Consumer0/Procedure/Command or use
java.lang.Runnable in the API ?
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
