public static UIComponent addTransient(
FacesContext context, ServletRequest req, UIComponent parent, String prevId, Class childClass)
throws Exception {
if (context == null) context = FacesContext.getCurrentInstance();
if (parent == null) {
UIComponentClassicTagBase parentTag =
(UIComponentClassicTagBase) req.getAttribute("caucho.jsf.parent");
parent = parentTag.getComponentInstance();
BodyContent body = parentTag.getBodyContent();
if (body != null) addVerbatim(parent, body);
}
UIComponent child = null;
;
if (child == null) child = (UIComponent) childClass.newInstance();
child.setTransient(true);
addChild(parent, prevId, child);
return child;
}
public static UIComponent findPersistent(
FacesContext context, ServletRequest req, UIComponent parent, String id) throws Exception {
if (context == null) context = FacesContext.getCurrentInstance();
BodyContent body = null;
if (parent == null) {
UIComponentClassicTagBase parentTag =
(UIComponentClassicTagBase) req.getAttribute("caucho.jsf.parent");
parent = parentTag.getComponentInstance();
body = parentTag.getBodyContent();
}
if (parent != null) {
List<UIComponent> children = parent.getChildren();
int size = children.size();
String prevId = null;
for (int i = 0; i < size; i++) {
UIComponent child = children.get(i);
if (id.equals(child.getId())) {
if (body != null) addVerbatim(parent, prevId, body);
return child;
}
if (child.getId() != null) prevId = child.getId();
}
}
return null;
}
public static UIComponent addFacet(
FacesContext context,
ServletRequest req,
UIComponent parent,
String facetName,
ValueExpression binding,
Class childClass)
throws Exception {
if (context == null) context = FacesContext.getCurrentInstance();
if (parent == null) {
UIComponentClassicTagBase parentTag =
(UIComponentClassicTagBase) req.getAttribute("caucho.jsf.parent");
parent = parentTag.getComponentInstance();
}
UIComponent child = null;
if (binding != null) child = (UIComponent) binding.getValue(context.getELContext());
if (child == null) child = (UIComponent) childClass.newInstance();
if (parent != null) parent.getFacets().put(facetName, child);
if (binding != null) binding.setValue(context.getELContext(), child);
return child;
}
public static UIComponent addPersistent(
FacesContext context,
ServletRequest req,
UIComponent parent,
ValueExpression binding,
Class childClass)
throws Exception {
if (context == null) context = FacesContext.getCurrentInstance();
if (parent == null) {
UIComponentClassicTagBase parentTag =
(UIComponentClassicTagBase) req.getAttribute("caucho.jsf.parent");
parent = parentTag.getComponentInstance();
BodyContent body = parentTag.getBodyContent();
addVerbatim(parent, body);
}
UIComponent child = null;
if (binding != null) child = (UIComponent) binding.getValue(context.getELContext());
if (child == null) {
child = (UIComponent) childClass.newInstance();
// jsf/3251
if (binding != null) binding.setValue(context.getELContext(), child);
}
if (parent != null) parent.getChildren().add(child);
return child;
}
// 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");
}
}
/** Decodes the data from the form. */
@Override
public void decode(FacesContext context, UIComponent component) {
String clientId = component.getClientId(context);
ExternalContext ext = context.getExternalContext();
Map<String, String> paramMap = ext.getRequestParameterMap();
String value = paramMap.get(clientId);
if (value != null) ((EditableValueHolder) component).setSubmittedValue(value);
}
private static void addChild(UIComponent parent, String prevId, UIComponent child) {
if (parent != null) {
List<UIComponent> children = parent.getChildren();
int size = children.size();
boolean hasPrev = prevId == null;
int i = 0;
for (; i < size; i++) {
UIComponent oldChild = children.get(i);
if (hasPrev && oldChild.getId() != null) {
children.add(i, child);
return;
} else if (prevId != null && prevId.equals(oldChild.getId())) hasPrev = true;
}
parent.getChildren().add(child);
}
}
public static UIComponent addVerbatim(UIComponent parent, String text) throws Exception {
HtmlOutputText verbatim = new HtmlOutputText();
verbatim.setTransient(true);
verbatim.setValue(text);
verbatim.setEscape(false);
parent.getChildren().add(verbatim);
return verbatim;
}
public static UIComponent findFacet(
FacesContext context, ServletRequest req, UIComponent parent, String facetName)
throws Exception {
if (context == null) FacesContext.getCurrentInstance();
if (parent == null) {
UIComponentClassicTagBase parentTag =
(UIComponentClassicTagBase) req.getAttribute("caucho.jsf.parent");
parent = parentTag.getComponentInstance();
}
if (parent != null) return parent.getFacet(facetName);
else return null;
}
/** Renders the open tag for the text. */
@Override
public void encodeBegin(FacesContext context, UIComponent component) throws IOException {
ResponseWriter out = context.getResponseWriter();
String id = component.getId();
String accesskey;
String dir;
boolean disabled;
String disabledClass;
String enabledClass;
String lang;
String onblur;
String onchange;
String onclick;
String ondblclick;
String onfocus;
String onkeydown;
String onkeypress;
String onkeyup;
String onmousedown;
String onmousemove;
String onmouseout;
String onmouseover;
String onmouseup;
String onselect;
boolean readonly;
String style;
String styleClass;
String tabindex;
String title;
Object value;
if (component instanceof HtmlSelectOneMenu) {
HtmlSelectOneMenu htmlComponent = (HtmlSelectOneMenu) component;
accesskey = htmlComponent.getAccesskey();
dir = htmlComponent.getDir();
disabled = htmlComponent.isDisabled();
disabledClass = htmlComponent.getDisabledClass();
enabledClass = htmlComponent.getEnabledClass();
lang = htmlComponent.getLang();
onblur = htmlComponent.getOnblur();
onchange = htmlComponent.getOnchange();
onclick = htmlComponent.getOnclick();
ondblclick = htmlComponent.getOndblclick();
onfocus = htmlComponent.getOnfocus();
onkeydown = htmlComponent.getOnkeydown();
onkeypress = htmlComponent.getOnkeypress();
onkeyup = htmlComponent.getOnkeyup();
onmousedown = htmlComponent.getOnmousedown();
onmousemove = htmlComponent.getOnmousemove();
onmouseout = htmlComponent.getOnmouseout();
onmouseover = htmlComponent.getOnmouseover();
onmouseup = htmlComponent.getOnmouseup();
onselect = htmlComponent.getOnselect();
readonly = htmlComponent.isReadonly();
style = htmlComponent.getStyle();
styleClass = htmlComponent.getStyleClass();
tabindex = htmlComponent.getTabindex();
title = htmlComponent.getTitle();
value = htmlComponent.getValue();
} else {
Map<String, Object> attrMap = component.getAttributes();
accesskey = (String) attrMap.get("accesskey");
dir = (String) attrMap.get("dir");
disabled = Boolean.TRUE.equals(attrMap.get("disabled"));
disabledClass = (String) attrMap.get("disabledClass");
enabledClass = (String) attrMap.get("enabledClass");
lang = (String) attrMap.get("lang");
onblur = (String) attrMap.get("onblur");
onchange = (String) attrMap.get("onchange");
onclick = (String) attrMap.get("onclick");
ondblclick = (String) attrMap.get("ondblclick");
onfocus = (String) attrMap.get("onfocus");
onkeydown = (String) attrMap.get("onkeydown");
onkeypress = (String) attrMap.get("onkeypress");
onkeyup = (String) attrMap.get("onkeyup");
onmousedown = (String) attrMap.get("onmousedown");
onmousemove = (String) attrMap.get("onmousemove");
onmouseout = (String) attrMap.get("onmouseout");
onmouseover = (String) attrMap.get("onmouseover");
onmouseup = (String) attrMap.get("onmouseup");
onselect = (String) attrMap.get("onselect");
readonly = Boolean.TRUE.equals(attrMap.get("readonly"));
style = (String) attrMap.get("style");
styleClass = (String) attrMap.get("styleClass");
tabindex = (String) attrMap.get("tabindex");
title = (String) attrMap.get("title");
value = attrMap.get("value");
}
UIViewRoot viewRoot = context.getViewRoot();
out.startElement("select", component);
if (style != null) out.writeAttribute("style", style, "style");
if (styleClass != null) out.writeAttribute("class", styleClass, "class");
String clientId = component.getClientId(context);
out.writeAttribute("name", clientId, "name");
if (id != null && !id.startsWith(UIViewRoot.UNIQUE_ID_PREFIX))
out.writeAttribute("id", clientId, "id");
if (disabled) out.writeAttribute("disabled", "disabled", "disabled");
if (accesskey != null) out.writeAttribute("accesskey", accesskey, "accesskey");
if (dir != null) out.writeAttribute("dir", dir, "dir");
if (lang != null) out.writeAttribute("lang", lang, "lang");
if (onblur != null) out.writeAttribute("onblur", onblur, "onblur");
if (onchange != null) out.writeAttribute("onchange", onchange, "onchange");
if (onclick != null) out.writeAttribute("onclick", onclick, "onclick");
if (ondblclick != null) out.writeAttribute("ondblclick", ondblclick, "ondblclick");
if (onfocus != null) out.writeAttribute("onfocus", onfocus, "onfocus");
if (onkeydown != null) out.writeAttribute("onkeydown", onkeydown, "onkeydown");
if (onkeypress != null) out.writeAttribute("onkeypress", onkeypress, "onkeypress");
if (onkeyup != null) out.writeAttribute("onkeyup", onkeyup, "onkeyup");
if (onmousedown != null) out.writeAttribute("onmousedown", onmousedown, "onmousedown");
if (onmousemove != null) out.writeAttribute("onmousemove", onmousemove, "onmousemove");
if (onmouseout != null) out.writeAttribute("onmouseout", onmouseout, "onmouseout");
if (onmouseover != null) out.writeAttribute("onmouseover", onmouseover, "onmouseover");
if (onmouseup != null) out.writeAttribute("onmouseup", onmouseup, "onmouseup");
if (onselect != null) out.writeAttribute("onselect", onselect, "onselect");
if (readonly) out.writeAttribute("readonly", "readonly", "readonly");
if (tabindex != null) out.writeAttribute("tabindex", tabindex, "tabindex");
if (title != null) out.writeAttribute("title", title, "title");
out.writeAttribute("size", "1", "size");
out.write("\n");
encodeOneChildren(out, context, component, value, enabledClass, disabledClass);
out.endElement("select");
out.write("\n");
for (UIComponent child : component.getChildren()) {
if (child instanceof UIComponent) child.encodeAll(context);
}
}