我会<h:dataTable>
在带有支持的复合组件中使用 a UIComponent
,您可以componentType
通过<composite:interface>
. UIComponent
然后,您可以在支持中维护DataModel
和定义操作。
dynamicFieldList.xhtml
<ui:composition
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:cc="http://java.sun.com/jsf/composite"
>
<cc:interface componentType="dynamicFieldList">
<cc:attribute name="value" type="java.util.List" required="true" />
</cc:interface>
<cc:implementation>
<h:dataTable id="table" binding="#{cc.table}" value="#{cc.attrs.value}" var="field">
<h:column><h:outputLabel value="#{field.label}" /></h:column>
<h:column><h:inputText value="#{field.value}" /></h:column>
<h:column><h:commandButton value="remove" action="#{cc.remove}" /></h:column>
</h:dataTable>
<h:commandButton value="add" action="#{cc.add}" />
</cc:implementation>
</ui:composition>
(<h:inputText>
如有必要,可以是您的复合字段组件)
com.example.DynamicFieldList
@FacesComponent(value="dynamicFieldList") // To be specified in componentType attribute.
@SuppressWarnings({"rawtypes", "unchecked"}) // We don't care about the actual model item type anyway.
public class DynamicFieldList extends UINamingContainer {
private UIData table;
public void add() {
((List) getAttributes().get("value")).add(new Field("somelabel"));
}
public void remove() {
((List) getAttributes().get("value")).remove(table.getRowData());
}
public UIData getTable() {
return table;
}
public void setTable(UIData table) {
this.table = table;
}
}
按如下方式使用它:
<h:form>
<my:dynamicFieldList value="#{bean.fields}" />
</h:form>
只有这个
@ManagedBean
@ViewScoped
public class Bean implements Serializable {
private List<Field> fields;
public Bean() {
fields = new ArrayList<>();
}
public List<Field> getFields() {
return fields;
}
}
和
public class Field implements Serializable {
private String label;
private String value;
public Field() {
//
}
public Field(String label) {
this.label = label;
}
public String getLabel() {
return label;
}
public void setLabel(String label) {
this.label = label;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
}