列表7.HtmlInputSuggestRenderer的encodeEnd()方法

public void encodeEnd( FacesContext context， UIComponent component) throws IOException { String valueString = _getValueAsString(context， component); String clientId = component.getClientId(context); Map attrs = component.getAttributes(); String title = (String)attrs.get(TITLE_ATTR); String onchange = (String)attrs.get(ONCHANGE_ATTR); MethodBinding doSuggest = (MethodBinding)attrs.get(DO_SUGGEST_ATTR); ResponseWriter out = context.getResponseWriter(); out.startElement("div"， component); if (title != null) out.writeAttribute("title"， title， TITLE_ATTR); // // value="[converted-value]" onchange="[onchange]" /> out.startElement("input"， component); out.writeAttribute("id"， clientId， null); out.writeAttribute("name"， clientId， null); if (valueString != null) out.writeAttribute("value"， valueString， null); if (doSuggest != null) { //当使用服务器端建议时，禁止浏览器自动完成功能 out.writeAttribute("autocomplete"， "off"， null); String expression = doSuggest.getExpressionString(); //从表达式中修整#{} String bindingRef = expression.substring(2， expression.length() - 1); ViewHandler handler = context.getApplication().getViewHandler(); String doSuggestURL = handler.getResourceURL(context， "mabon:/" + bindingRef); out.writeAttribute("onkeypress"， "return projsf.jdj.doKeyPress(event);"， null); out.writeAttribute("onkeyup"， "return projsf.jdj.doKeyUp(event);"， null); out.writeAttribute("onchange"， "projsf.jdj.doChange(event， '" + doSuggestURL + "');"， null); out.writeAttribute("onblur"， "return projsf.jdj.doBlur(event);"， null); } out.endElement("input"); out.startElement("br"， null); out.endElement("br"); out.startElement("div"， null); out.writeAttribute("id"， clientId + "$suggest"， null); out.writeAttribute("class"， "HtmlInputSuggest"， null); out.endElement("div"); }

列表8.一个使用JSF HttpInputSuggest组件的JSP页面

http://java.sun.com/JSP/Page" version="1.2" xmlns:jdj="http://projsf.apress.com/jdj" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" > title="Input Suggest Component" value="#{backingBean.value}" doSuggest="#{backingBean.doSuggest}" />

列表9:支持bean的value属性

package com.apress.projsf.jdj.application; import java.util.ArrayList; import java.util.List; /** *BackingBean是一个inputSuggest.jspx文档的支持bean。 */ public class BackingBean{ public void setValue(Object value) { _value = value; } public Object getValue() { return _value; }

列表10.支持bean的doSuggest()方法

public String[] doSuggest(String initialValue) { List suggestions = new ArrayList(); for (int i=0; i < _MASTER_LIST.length; i++) { if (_MASTER_LIST[i].startsWith(initialValue)) suggestions.add(_MASTER_LIST[i]); } return suggestions.toArray(new String[0]); } private Object _value; static private final String[] _MASTER_LIST = new String[] { "Pro JSF and Ajax"， "Pro Ajax"， "Pro JSP 2"， "Pro Jakarta"， "Pro J2EE 1.4" }; }

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