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package com.sun.faces.systest.state;
import javax.faces.bean.ManagedBean;
import javax.faces.component.UIComponent;
import javax.faces.component.html.HtmlPanelGroup;
import javax.faces.component.html.HtmlInputText;
import javax.faces.component.html.HtmlCommandButton;
import javax.faces.context.FacesContext;
@ManagedBean
public class DynamicStateBean2 {
private String value;
public DynamicStateBean2() {
value = "default value";
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
public void render() {
// <h:form id="form">
// <h:panelGroup id="viewPanel"/>
// </h:form>
UIComponent viewPanel = FacesContext
.getCurrentInstance()
.getViewRoot()
.findComponent("form:viewPanel");
viewPanel.getChildren().clear();
UIComponent childPanel = new HtmlPanelGroup();
childPanel.setId("childPanel");
viewPanel.getChildren().add(childPanel);
// Add a textinput to the inner most panel with a
// binding to the the value property of this bean.
// ...
// <h:panelGroup id="viewPanel">
// <h:panelGroup id="childPanel"/>
// <h:textInput value="#{render.value}"/>
// </h:panelGroup>
// </h:panelGroup>
// ...
UIComponent textInput = new HtmlInputText();
textInput.setId("textInput");
textInput.setValueExpression("value", FacesContext.getCurrentInstance()
.getApplication().getExpressionFactory().createValueExpression(
FacesContext.getCurrentInstance().getELContext(),
"#{dynamicStateBean2.value}", Object.class));
childPanel.getChildren().add(textInput);
}
public void render2() {
FacesContext ctx = FacesContext.getCurrentInstance();
UIComponent viewPanel = ctx.getViewRoot().findComponent("form:viewPanel");
viewPanel.getChildren().clear();
HtmlCommandButton btn = (HtmlCommandButton)
ctx.getApplication().createComponent(HtmlCommandButton.COMPONENT_TYPE);
btn.setValue("dynamically added button");
// Using a non-generated identifier will not cause
// the exception to be thrown.
//btn.setId("btn");
viewPanel.getChildren().add(btn);
}
}