扩展displaytag标签库

下面是本人参考该URL扩展了下displaytag的标签库:

http://jira.codehaus.org/browse/DISPL-187

 

需要修改的文件为图1.

首先, Displaytag.tld文件:

以给Column 添加鼠标经过事件:onmouseover
在tag name为column的标签下添加:

<
attribute
>
      
<
name
>


onmouseover
</
name
>
      
<
required
>


false
</
required
>
      
<
rtexprvalue
>


true
</
rtexprvalue
>
      
<
type
>


java.lang.String
</
type
>
      
<
description
>
          JavaScript onmouseover event attribute. add by lovejj.
      
</
description
>
    
</
attribute
>

<attribute>
      <name>onmouseover</name>
      <required>false</required>
      <rtexprvalue>true</rtexprvalue>
      <type>java.lang.String</type>
      <description>
          JavaScript onmouseover event attribute. add by lovejj.
      </description>
    </attribute>

 其次:TagConstants.java文件:
添加标签属性:

/**
     * html attribute <code>onmouseover</code>.
     */
    
public


 
static


 
final


 String ATTRIBUTE_ONMOUSEOVER = 
"onmouseover"

; 
//lovejj

/**
     * html attribute <code>onmouseover</code>.
     */
    public static final String ATTRIBUTE_ONMOUSEOVER = "onmouseover"; //lovejj

 

再者: ColumnTag.java 文件:
添加set方法:

/**
     * @author loveJJ
     * setter for the "onmouseout" tag attribute.
     * @param value attribute value
     */
    
public


 
void


 setOnmouseout(String value)
    {
        
this


.attributeMap.put(TagConstants.ATTRIBUTE_ONMOUSEOUT, value);
    }

/**
     * @author loveJJ
     * setter for the "onmouseout" tag attribute.
     * @param value attribute value
     */
    public void setOnmouseout(String value)
    {
    	this.attributeMap.put(TagConstants.ATTRIBUTE_ONMOUSEOUT, value);
    }

 

最后ColumnTagBeanInfo.java 文件:
添加页面标签描述符指向:

 

//鼠标放上事件
            proplist.add(
new


 PropertyDescriptor(
"onmouseover"

, 
//$NON-NLS-1$ add by lovejj
                ColumnTag.
class


,
                
null


,
                
"setOnmouseover"

)); 
//$NON-NLS-1$ add by lovejj

//鼠标放上事件
            proplist.add(new PropertyDescriptor("onmouseover", //$NON-NLS-1$ add by lovejj
        		ColumnTag.class, 
        		null,
        		"setOnmouseover")); //$NON-NLS-1$ add by lovejj

 

到此就完成了displaytag的标签扩展了.重启服务,修改页面,即可测试
例如:jsp
 
显示为:

图1:

图2:

图3: