// 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");
}
}
// 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");
}
}
public UIComponent buildWidget(
String elementName, Map<String, String> attributes, UIMetawidget metawidget) {
FacesContext context = FacesContext.getCurrentInstance();
Application application = context.getApplication();
Class<?> clazz = WidgetBuilderUtils.getActualClassOrType(attributes, null);
if (clazz == null) {
return null;
}
// Colors (as of RichFaces 3.3.1)
if (Color.class.equals(clazz)) {
if (WidgetBuilderUtils.isReadOnly(attributes)) {
return FacesContext.getCurrentInstance()
.getApplication()
.createComponent(HtmlOutputText.COMPONENT_TYPE);
}
return application.createComponent("org.richfaces.ColorPicker");
}
// Suggestion box
//
// Note: for suggestion box to work in table column footer facets, you need
// https://jira.jboss.org/jira/browse/RF-7700
if (String.class.equals(clazz)) {
String facesSuggest = attributes.get(FACES_SUGGEST);
if (facesSuggest != null) {
UIComponent stubComponent = application.createComponent(UIStub.COMPONENT_TYPE);
List<UIComponent> children = stubComponent.getChildren();
// Standard text box
HtmlInputText inputText =
(HtmlInputText) application.createComponent(HtmlInputText.COMPONENT_TYPE);
inputText.setStyle(((HtmlMetawidget) metawidget).getStyle());
inputText.setStyleClass(((HtmlMetawidget) metawidget).getStyleClass());
children.add(inputText);
UISuggestionBox suggestionBox =
(UISuggestionBox) application.createComponent(HtmlSuggestionBox.COMPONENT_TYPE);
// Lock the 'id's so they don't get changed. This is important for the
// JavaScript getElementById that RichFaces generates. Also, do not just use
// 'viewRoot.createUniqueId' because, as per the RenderKit specification:
//
// "If the value returned from component.getId() is non-null and does not start
// with UIViewRoot.UNIQUE_ID_PREFIX, call component.getClientId() and render
// the result as the value of the id attribute in the markup for the component."
//
// Therefore the 'id' attribute is never rendered, therefore the JavaScript
// getElementById doesn't work. Add our own prefix instead
inputText.setId("suggestionText_" + FacesUtils.createUniqueId());
suggestionBox.setId("suggestionBox_" + FacesUtils.createUniqueId());
// Suggestion box
suggestionBox.setFor(inputText.getId());
suggestionBox.setVar("_internal");
children.add(suggestionBox);
try {
// RichFaces 3.2/JSF 1.2 mode
//
// Note: we wrap the MethodExpression as an Object[] to stop link-time
// dependencies on javax.el.MethodExpression, so that we still work with
// JSF 1.1
//
// Note: according to JavaDocs returnType is only important when literal
// (i.e. without #{...}) expression is used, otherwise Object.class is fine
// (http://community.jboss.org/message/516830#516830)
Object[] methodExpression =
new Object[] {
application
.getExpressionFactory()
.createMethodExpression(
context.getELContext(),
facesSuggest,
Object.class,
new Class[] {Object.class})
};
ClassUtils.setProperty(suggestionBox, "suggestionAction", methodExpression[0]);
} catch (Exception e) {
// RichFaces 3.1/JSF 1.1 mode
MethodBinding methodBinding =
application.createMethodBinding(facesSuggest, new Class[] {Object.class});
suggestionBox.setSuggestionAction(methodBinding);
}
// Column
//
// Note: this must be javax.faces.component.html.HtmlColumn, not
// org.richfaces.component.html.HtmlColumn. The latter displayed okay, but when
// a value was selected it did not populate back to the HtmlInputText
UIColumn column =
(UIColumn)
application.createComponent(javax.faces.component.html.HtmlColumn.COMPONENT_TYPE);
column.setId(FacesUtils.createUniqueId());
suggestionBox.getChildren().add(column);
// Output text box
UIComponent columnText = application.createComponent(HtmlOutputText.COMPONENT_TYPE);
columnText.setId(FacesUtils.createUniqueId());
ValueBinding valueBinding = application.createValueBinding("#{_internal}");
columnText.setValueBinding("value", valueBinding);
column.getChildren().add(columnText);
return stubComponent;
}
}
return null;
}
