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如何调整wicket的PagingNavigator的html输出_html/css_WEB-ITnose

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Release: 2016-06-21 09:18:56
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这是默认模板:

<wicket:panel>	<a wicket:id="first" class="first"><<</a>	<a wicket:id="prev" class="prev"><</a>	<span wicket:id="navigation" class="goto">		<a wicket:id="pageLink" href="#"><span wicket:id="pageNumber">5</span></a>	</span>	<a wicket:id="next" class="next">></a>	<a wicket:id="last" class="last">>></a></wicket:panel>
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当然最外围的tag由该组件的模板决定。比如外围用div:

<div wicket:id="mypaginator"></div>
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现在假设需要purecss样式的pagingNavigator,它的html如下:

<ul class="pure-paginator">    <li><a class="pure-button prev" href="#">&#171;</a></li>    <li><a class="pure-button" href="#">1</a></li>    <li><a class="pure-button pure-button-active" href="#">2</a></li>    <li><a class="pure-button" href="#">3</a></li>    <li><a class="pure-button" href="#">4</a></li>    <li><a class="pure-button" href="#">5</a></li>    <li><a class="pure-button next" href="#">&#187;</a></li></ul>
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可见两者的差别还是不少。让我们看看可能的方法:

1、新建一个类,继承PagingNavigator。

比如类名称是PagingNavigator,然后建立对应的模板文件PagingNavigator.html,内容如下:

<ul class="pure-paginator">    <li><a wicket:id="first" class="pure-button first" href="#">&#171;</a></li>    <li><a wicket:id="prev" class="pure-button prev" href="#">&#171;</a></li>    <li wicket:id="navigation"><a wicket:id="pageLink" class="pure-button" href="#"><wicket:container wicket:id="pageNumber"></wicket:container></a></li>    <li><a wicket:id="next" class="pure-button next" href="#">&#187;</a></li>    <li><a wicket:id="last" class="pure-button last" href="#">&#187;</a></li></ul>
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这样子画出来的PagingNavigator的就是purecss样式的。但是还需要完善,当前页的样式,没有最后一页的时候按钮应该disabled。也就是说根据当前页的情况需要添加pure-button-disabled,或者pure-button-active样式。

为了达成这个功能,我们需要更深的探究PagingNavigator类,看看哪里可以实现这个功能。

对照上面的模板,其中wicket:id="navigation"对应的是PagingNavigation组件,其中有一个方法是:

@Override	protected void populateItem(final LoopItem loopItem)	{		// Get the index of page this link shall point to		final long pageIndex = getStartIndex() + loopItem.getIndex();		// Add a page link pointing to the page		final AbstractLink link = newPagingNavigationLink("pageLink", pageable, pageIndex);		link.add(new TitleAppender(pageIndex));		loopItem.add(link);		// Add a page number label to the list which is enclosed by the link		String label = "";		if (labelProvider != null)		{			label = labelProvider.getPageLabel(pageIndex);		}		else		{			label = String.valueOf(pageIndex + 1);		}		link.add(new Label("pageNumber", label));	}
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其中TitleAppender用来添加link的title属性,这样鼠标移到上面的时候就会提示,比如goto 2 page等等。接下来是label,就是pageNumber对应的组件。

可以通过复写这个方法,根据情况对label进行修饰(AttributeModifier),最终达到需要的效果。


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