Ryan's Java world!

color: aqua" >to be replaced</span>, or<br />
?? even another panel: <span wicket:id="otherPanel"?

style="background-color: aqua">also to be replaced</span>.<br />
?? You can nest panels any deep you want.
??</p>
?</wicket:panel>

</body>
</html>

下面是使用上面的panel的代碼,
Java code:
...
?add(new MyPanel("panel"));
...
Html code:
??? <span wicket:id="panel">panel contents come here</span>

[b]Fragment:[/b] 當(dāng)有很多小段信息要組織的時(shí)候,使用很多panel可能是不雅觀的,這時(shí)

就可以使用Fragment了.
示例如下:
Java code:
...
??? add(new Fragment("myPanel1", "frag2"));
...

Html code:
...
<span wicket:id="myPanel">Example input (will be removed)</span>
???????????
???????????? <wicket:fragment wicket:id="frag1">panel

1</wicket:fragment>
???????????? <wicket:fragment wicket:id="frag2">panel

2</wicket:fragment>
...

[b]Link:[/b] link就是web頁面中的連接了, 這里的link可以是一切連接,如 常用的<a/>

, button... 這里的link 和JSF中的link所擁有的功能一樣強(qiáng)大.
下面來看幾個(gè)示例:
普通的link:
Java code:
...
?add(new Link("link1"));
...
Html code:
...
<a href="#" wicket:id="link1">this link is clicked <span

wicket:id="linkLabel1">n</span> times</a>
...
使用不同的html 可以顯示為不同的樣式,如:
button樣式的按鈕:
Html code:
<button wicket:id="link2">this button is clicked <span

wicket:id="linkLabel2">n</span> times</button>

or:
<input type="button" wicket:id="link3" value="this button is clicked n

times" />

Html code:
...
?<a href="#" target="_new" wicket:id="externalLink1">this body

will be replaced</a>
...

[b]PageLink:[/b] 也是link的一種,實(shí)現(xiàn)頁面之間的跳轉(zhuǎn): 示例:
Java code:
...
?// 可以有多種方法使用該類,下面是一種推薦的方法
??add(new PageLink("pageLink", new IPageLink(){
???public Page getPage(){
????return new NonBookmarkablePage

(QuickStart4.this);
???}

???public Class getPageIdentity(){
????return NonBookmarkablePage.class;
???}
??}));

?...
Html code:
...
?<a wicket:id="pageLink">go to our private/ non bookmarkable

page</a>
....

[b]BookmarkablePageLink:[/b] 也是link的一種,實(shí)現(xiàn)一種可以作為書簽收藏的連接,也

就是無狀態(tài)的連接. 可以帶參數(shù)也可以不帶參數(shù): 示例:

Java? code :
...
??add(new BookmarkablePageLink("pageLinkNoArgs",

BookmarkablePage.class));

??PageParameters parameters = new PageParameters();
??parameters.put("message", "This message was passed as a

page parameter argument");
??add(new BookmarkablePageLink("pageLinkWithArgs",

BookmarkablePage.class, parameters));

....

Html code:

...
<p>
?<a wicket:id="pageLinkNoArgs">go to our bookmarkable page

without passing any arguments</a>
?</p>

?<p>
?<a wicket:id="pageLinkWithArgs">go to our bookmarkable page

passing a message argument</a>
?</p>
...