理解XForm——学习IBM DW的资料 (4)

1、动态改变表单的字段

如增加、删除或修改表单的一个或一些字段，通过 XForm的Trigger元素中嵌入delete、add、setvalue属性来实现：

<xforms:trigger>
<xforms:label>Remove current item</xforms:label>
<xforms:delete event="xforms-activate" nodeset="order/soaps/item"
at="index(@#soaplist@#)"/>
</xforms:trigger>
<xforms:trigger>
<xforms:label>Add an item</xforms:label>
<xforms:action event="xforms-activate">
<xforms:insert nodeset="order/soaps/item" at="index(@#soaplist@#)"
position="after"/>
<xforms:setvalue ref="order/soaps/item[index(@#soaplist@#)]/
qty">0</xforms:setvalue>

<xforms:setvalue ref="order/soaps/item[index(@#soaplist@#)]/
flavor">P</xforms:setvalue>
<xforms:setvalue
ref="order/soaps/item[index(@#soaplist@#)]/
unitprice">2.50</xforms:setvalue>
<xforms:setvalue
ref="order/soaps/item[index(@#soaplist@#)]/
totalprice">0.00</xforms:setvalue>
</xforms:action>
</xforms:trigger>

原文转自：http://www.ltesting.net