// 编写处理Action事件的方法
public void process(ActionEvent ae) {
if (name.equals("疯狂Java讲义")) {
price.setValue(ae.getComponent());
price.setSize(60);
price.setStyle("background-color:#1111ff;" + "font-weight:bold");
}
}
/**
* Returns a container with "add category" UI
*
* @return WFContainer
*/
private WFContainer getAddCategoryContainer() {
WFContainer container = new WFContainer();
WFResourceUtil localizer = WFResourceUtil.getResourceUtilContent();
// Text
HtmlOutputText addText = localizer.getTextVB("new_category");
container.add(addText);
// Input
HtmlInputText newCategoryInput = new HtmlInputText();
newCategoryInput.setSize(40);
newCategoryInput.setId(getAddCategoryInputId());
container.add(newCategoryInput);
// Button
HtmlCommandButton addCategoryButton = localizer.getButtonVB(getAddButtonId(), "add", this);
container.add(addCategoryButton);
return container;
}
// 编写处理Action事件的方法
public void processAction(ActionEvent event) {
// 获取当前的FacesContext对象
FacesContext context = FacesContext.getCurrentInstance();
// 获取JSF页面中<f:view.../>元素
UIViewRoot viewRoot = context.getViewRoot();
// 通过ID获取<f:view.../>内的<h:form.../>子元素。
UIComponent comp = viewRoot.findComponent("addForm");
// 通过ID获取<h:form.../>内的第一个<h:inputText.../>子元素。
UIInput input = (UIInput) comp.findComponent("name");
// 通过ID获取<h:form.../>内的第二个<h:inputText.../>子元素。
HtmlInputText price = (HtmlInputText) comp.findComponent("price");
if (input.getValue().equals("疯狂Java讲义")) {
price.setSize(60);
price.setValue("99.0元");
price.setStyle("background-color:#9999ff;" + "font-weight:bold");
}
}
/**
* Takes a parent UIComponent and adds all UIComponents which are required for configuring a
* metric. i.e. metric name, math expression, value, etc.
*
* @param metric
* @param parent
*/
private void helperCreateUICompsForMetricConfig(MetricBean metric, UIComponent parent) {
// 1)remove all existing child elements that may have been created previously from ALL
// pConfigVeryGood, pConfigGood, etc.
removeAllInputHelpersForMetricConfig();
// 2) now build the gui elements for building a metric configuration
// 2a) Add an output text with the metric's name
HtmlOutputText mnameText = new HtmlOutputText();
mnameText.setId("metricName" + metric.getInternalID());
mnameText.setValue(metric.getName());
// add on parent
parent.getChildren().add(mnameText);
// 2b) Select a math expression
HtmlSelectOneMenu select2 = new HtmlSelectOneMenu();
select2.setId("mathSelect" + metric.getInternalID());
UISelectItems items2 = new UISelectItems();
items2.setId("mathvals" + metric.getInternalID());
items2.setValue(metric.getAllAvailableTypes());
Class[] parms2 = new Class[] {ValueChangeEvent.class};
ExpressionFactory ef =
FacesContext.getCurrentInstance().getApplication().getExpressionFactory();
MethodExpression mb =
ef.createMethodExpression(
FacesContext.getCurrentInstance().getELContext(),
"#{AutoEvalSerUserConfigBean.processMathExprChange}",
null,
parms2);
MethodExpressionValueChangeListener vcl = new MethodExpressionValueChangeListener(mb);
select2.addValueChangeListener(vcl);
select2.getChildren().add(items2);
select2.setImmediate(true);
// place an ajax support on the selectonemenu field
HtmlAjaxSupport ajaxSupport2 = new HtmlAjaxSupport();
// Class[] parms = new Class[]{ActionEvent.class};
// ajaxSupport.setAction(FacesContext.getCurrentInstance().getApplication().createMethodBinding("#{AutoEvalSerUserConfigBean.sliderValue}", parms));
ajaxSupport2.setEvent("onchange");
// to add multiple ids for rerendering, separate them with a ","
ajaxSupport2.setReRender(select2.getId());
ajaxSupport2.setEventsQueue("foo");
select2.getFacets().put("a4jsupport2", ajaxSupport2);
// add to parent
parent.getChildren().add(select2);
// 2c) For all input types except boolean values:
if (metric.isHtmlInputTextUsed()) {
// enter a boundary value for a specific added metric
HtmlInputText inputText = new HtmlInputText();
inputText.setId("metricBoundary" + metric.getInternalID());
inputText.setValue(metric.getEvalBoundary());
inputText.setSize(10);
Class[] parms = new Class[] {ValueChangeEvent.class};
MethodExpression mb2 =
ef.createMethodExpression(
FacesContext.getCurrentInstance().getELContext(),
"#{AutoEvalSerUserConfigBean.processMetricBoundaryValueChange}",
null,
parms);
MethodExpressionValueChangeListener vcl2 = new MethodExpressionValueChangeListener(mb2);
inputText.addValueChangeListener(vcl2);
inputText.setImmediate(true);
// place an ajax support on the InputText field
HtmlAjaxSupport ajaxSupport = new HtmlAjaxSupport();
// Class[] parms = new Class[]{ActionEvent.class};
// ajaxSupport.setAction(FacesContext.getCurrentInstance().getApplication().createMethodBinding("#{AutoEvalSerUserConfigBean.sliderValue}", parms));
ajaxSupport.setEvent("onchange");
// to add multiple ids for rerendering, separate them with a ","
ajaxSupport.setReRender(inputText.getId());
ajaxSupport.setEventsQueue("foo");
inputText.getFacets().put("a4jsupport", ajaxSupport);
// add to parent
parent.getChildren().add(inputText);
} else {
// add a drop-down box for boolean values
HtmlSelectOneMenu select = new HtmlSelectOneMenu();
select.setId("booleanSelect" + metric.getInternalID());
UISelectItems items = new UISelectItems();
items.setId("vals" + metric.getInternalID());
List<SelectItem> l = new ArrayList<SelectItem>();
l.add(new SelectItem("true"));
l.add(new SelectItem("false"));
items.setValue(l);
Class[] parms = new Class[] {ValueChangeEvent.class};
MethodExpression mb3 =
ef.createMethodExpression(
FacesContext.getCurrentInstance().getELContext(),
"#{AutoEvalSerUserConfigBean.processMetricBoundaryValueChange}",
null,
parms);
MethodExpressionValueChangeListener vcl3 = new MethodExpressionValueChangeListener(mb3);
select.addValueChangeListener(vcl3);
select.getChildren().add(items);
select.setImmediate(true);
// place an ajax support on the selectonemenu field
HtmlAjaxSupport ajaxSupport = new HtmlAjaxSupport();
// Class[] parms = new Class[]{ActionEvent.class};
// ajaxSupport.setAction(FacesContext.getCurrentInstance().getApplication().createMethodBinding("#{AutoEvalSerUserConfigBean.sliderValue}", parms));
ajaxSupport.setEvent("onchange");
// to add multiple ids for rerendering, separate them with a ","
ajaxSupport.setReRender(select.getId());
ajaxSupport.setEventsQueue("foo");
select.getFacets().put("a4jsupport", ajaxSupport);
// add to parent
parent.getChildren().add(select);
}
// 2d) finally the submit button for saving the configuration
HtmlCommandButton button_save = new HtmlCommandButton();
button_save.setId("buttonSave" + metric.getInternalID());
button_save.setValue("add config");
Class[] parms3 = new Class[] {ActionEvent.class};
MethodExpression mb4 =
ef.createMethodExpression(
FacesContext.getCurrentInstance().getELContext(),
"#{AutoEvalSerUserConfigBean.command_saveMetricConfiguration}",
null,
parms3);
MethodExpressionActionListener vcl4 = new MethodExpressionActionListener(mb4);
button_save.addActionListener(vcl4);
UIParameter p = new UIParameter();
p.setId("param_save_button" + metric.getInternalID());
p.setName("pConfigPanel");
p.setValue(parent.getId());
button_save.getChildren().add(p);
parent.getChildren().add(button_save);
HtmlOutputText message = new HtmlOutputText();
message.setId("message" + metric.getInternalID());
message.setStyle("color:red;");
parent.getChildren().add(message);
}