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发表时间：2009-07-20
最后修改：2009-11-26
BaseRender
import java.io.IOException;
import javax.faces.component.UIComponent;
import javax.faces.context.ResponseWriter;
import javax.faces.render.Renderer;
public abstract class BaseRender extends Renderer {
abstract boolean needSpecialAttribute();
abstract void writeSpecialAttributes(UIComponent component,
ResponseWriter writer)throws IOException;
protected void writeCommonAttributes(UIComponent component,
ResponseWriter writer, String clientId) throws IOException {
String width = (String) component.getAttributes().get(HtmlElement.WIDTH);
String height = (String) component.getAttributes().get(HtmlElement.HEIGHT);
String styleClass = (String) component.getAttributes()
.get(HtmlElement.STYLECLASS);
String inlineStyle = (String) component.getAttributes().get(HtmlElement.INLINESTYLE);
writer.writeAttribute(HtmlElement.ID,clientId, null);
if (width != null) {
writer.writeAttribute(HtmlElement.WIDTH, width, null);
}
if (height != null) {
writer.writeAttribute(HtmlElement.HEIGHT, height, null);
}
if (inlineStyle != null) {
writer.writeAttribute(HtmlElement.STYLE, inlineStyle, null);
}
if (styleClass != null) {
writer.writeAttribute(HtmlElement.CLASS, styleClass, null);
}
if (needSpecialAttribute()) {
writeSpecialAttributes(component,writer);
}
}
}
TableLayoutRenderClass
import java.io.IOException;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
public class TableLayoutRenderer extends BaseRender {
public void encodeBegin(FacesContext context, UIComponent component)
throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = component.getClientId(context);
writer.startElement("table", component);
writeCommonAttributes(component, writer, clientId);
//encodeRow(context,component, writer, clientId);
//encodeCommand(component, writer, clientId);
}
public void encodeEnd(FacesContext context, UIComponent component)throws IOException {
try {
context.getResponseWriter().endElement("table");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void encodeChildren(FacesContext context, UIComponent component)
throws IOException
{
for(UIComponent child : (List<UIComponent>)component.getChildren()) {
try {
if (child instanceof HtmlRowLayout) {
//super.encodeChildren(context, child);
child.encodeBegin(context);
child.encodeChildren(context);
child.encodeEnd(context);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
@Override
boolean needSpecialAttribute() {
// TODO Auto-generated method stub
return false;
}
@Override
void writeSpecialAttributes(UIComponent component, ResponseWriter writer)
throws IOException {
// TODO Auto-generated method stub
}
}
HtmlTableLayOut ComponentClass
package com.test.jsftest;
import javax.faces.component.UIPanel;
public class HtmlTableLayout extends UIPanel {
public HtmlTableLayout() {
setRendererType("com.test.jsftest.HtmlTableLayout");
}
}
RowLayout Render Class
import java.io.IOException;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
public class RowLayoutRenderer extends BaseRender {
public void encodeBegin(FacesContext context, UIComponent component)
throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = component.getClientId(context);
writer.startElement("tr", component);
writeCommonAttributes(component, writer, clientId);
//encodeRow(context,component, writer, clientId);
}
public void encodeChildren(FacesContext context, UIComponent component)
throws IOException
{
try{
for(UIComponent child : (List<UIComponent>)component.getChildren()) {
if (child instanceof HtmlCellFormat)
{
//super.encodeChildren(context, child);
child.encodeBegin(context);
child.encodeChildren(context);
child.encodeEnd(context);
}
// else
// {
// ResponseWriter rw = context.getResponseWriter();
// rw.startElement("td", null);
// super.encodeChildren(context, child);
// rw.endElement("td");
// }
}
}catch(Exception e) {
}
}
public void encodeEnd(FacesContext context, UIComponent component) {
try {
context.getResponseWriter().endElement("tr");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
boolean needSpecialAttribute() {
// TODO Auto-generated method stub
return false;
}
@Override
void writeSpecialAttributes(UIComponent component, ResponseWriter writer)
throws IOException {
// TODO Auto-generated method stub
}
}
RowLayout Component Class
package com.test.jsftest;
import javax.faces.component.UIPanel;
public class HtmlRowLayout extends UIPanel {
public HtmlRowLayout() {
setRendererType("com.test.jsftest.HtmlRowLayout");
}
}
CellFormat Render Class
import java.io.IOException;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
public class CellFormatRenderer extends BaseRender {
public void encodeBegin(FacesContext context, UIComponent component)
throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = component.getClientId(context);
writer.startElement("td", component);
writeCommonAttributes(component, writer, clientId);
//encodeCell(context,component, writer, clientId);
//encodeCommand(component, writer, clientId);
}
public void encodeEnd(FacesContext context, UIComponent component) {
try {
context.getResponseWriter().endElement("td");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void encodeChildren(FacesContext context, UIComponent component)
throws IOException
{
for(UIComponent child : (List<UIComponent>)component.getChildren()) {
if (child.isRendered()) {
try {
//super.encodeChildren(context, child);
child.encodeBegin(context);
child.encodeChildren(context);
child.encodeEnd(context);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
@Override
boolean needSpecialAttribute() {
// TODO Auto-generated method stub
return false;
}
@Override
void writeSpecialAttributes(UIComponent component, ResponseWriter writer)
throws IOException {
// TODO Auto-generated method stub
}
}
CellFormatComponent Class
package com.test.jsftest;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.faces.component.UIComponent;
import javax.faces.component.UIPanel;
import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.FacesEvent;
import javax.faces.event.FacesListener;
import javax.faces.render.Renderer;
public class HtmlCellFormat extends UIPanel {
public HtmlCellFormat() {
setRendererType("com.test.jsftest.HtmlCellFormat");
}
}
PanelHorizontalLayout Class
import java.io.IOException;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
public class PanelHorizontalLayoutRender extends BaseRender {
public boolean getRendersChildren()
{
return true;
}
public void encodeBegin(FacesContext context, UIComponent component)
throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = component.getClientId(context);
writer.startElement("table", component);
writeCommonAttributes(component, writer, clientId);
writer.startElement("tr", component);
//encodeAttribute(context, component, writer, clientId);
encodeChild(context, writer, component);
//context.getResponseWriter().endElement("tr");
//context.getResponseWriter().endElement("table");
// encodeCommand(component, writer, clientId);
}
public void encodeEnd(FacesContext context, UIComponent component)
throws IOException {
try {
context.getResponseWriter().endElement("tr");
context.getResponseWriter().endElement("table");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void encodeChildren(FacesContext context, UIComponent component)
throws IOException {
}
private void encodeChild(FacesContext context, ResponseWriter writer, UIComponent component) throws IOException {
for (UIComponent child : (List<UIComponent>) component.getChildren()) {
if (child instanceof HtmlCellFormat) {
child.encodeBegin(context);
child.encodeChildren(context);
child.encodeEnd(context);
}else {
writer.startElement("td", component);
// super.encodeChildren(context, child);
child.encodeBegin(context);
child.encodeChildren(context);
child.encodeEnd(context);
writer.endElement("td");
}
}
}
@Override
boolean needSpecialAttribute() {
// TODO Auto-generated method stub
return true;
}
@Override
void writeSpecialAttributes(UIComponent component, ResponseWriter writer) throws IOException {
// TODO Auto-generated method stub
String vAlign = (String) component.getAttributes().get("vAlign");
String hAlign = (String) component.getAttributes().get("hAlign");
if (vAlign != null) {
writer.writeAttribute("vAlign", vAlign, null);
}
if (hAlign != null) {
writer.writeAttribute("align", hAlign, null);
}
}
}
PanelGroupLayout
import java.io.IOException;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
public class PanelGroupLayoutRender extends BaseRender {
private static final String HORIZONTAL_LAY_OUT = "Horizontal";
private static final String VERTICAL_LAY_OUT = "Vertical";
public boolean getRendersChildren()
{
return true;
}
public void encodeBegin(FacesContext context, UIComponent component)
throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = component.getClientId(context);
writer.startElement("table", component);
writeCommonAttributes(component,writer,clientId);
encodeChild(context, writer, component);
}
public void encodeEnd(FacesContext context, UIComponent component)
throws IOException {
try {
context.getResponseWriter().endElement("table");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void encodeChildren(FacesContext context, UIComponent component)
throws IOException {
}
private void encodeChild(FacesContext context, ResponseWriter writer, UIComponent component) throws IOException {
String layoutType = (String) component.getAttributes().get("layout");
if (layoutType == null || HORIZONTAL_LAY_OUT.equals(layoutType)) {
writer.startElement("tr", component);
for (UIComponent child : (List<UIComponent>) component.getChildren()) {
if (child instanceof HtmlCellFormat) {
child.encodeBegin(context);
child.encodeChildren(context);
child.encodeEnd(context);
}else {
writer.startElement("td", component);
// super.encodeChildren(context, child);
child.encodeBegin(context);
child.encodeChildren(context);
child.encodeEnd(context);
writer.endElement("td");
}
}
writer.endElement("tr");
}else if (VERTICAL_LAY_OUT.equals(layoutType)) {
for (UIComponent child : (List<UIComponent>) component.getChildren()) {
writer.startElement("tr",component);
if (child instanceof HtmlCellFormat) {
child.encodeBegin(context);
child.encodeChildren(context);
child.encodeEnd(context);
}else {
writer.startElement("td",component);
// super.encodeChildren(context, child);
child.encodeBegin(context);
child.encodeChildren(context);
child.encodeEnd(context);
writer.endElement("td");
}
writer.endElement("tr");
}
}
}
@Override
boolean needSpecialAttribute() {
// TODO Auto-generated method stub
return false;
}
@Override
void writeSpecialAttributes(UIComponent component, ResponseWriter writer) {
// TODO Auto-generated method stub
}
}
Faces-config.xml <?xml version="1.0"?> <!DOCTYPE faces-config PUBLIC "-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.0//EN" "http://java.sun.com/dtd/web-facesconfig_1_0.dtd"> <faces-config> <application> <!-- Enables Facelets --> <view-handler>com.sun.facelets.FaceletViewHandler</view-handler> </application> <component> <component-type> com.test.jsftest.TextWithCmd </component-type> <component-class> com.test.jsftest.UITextWithCmd </component-class> </component> <component> <component-type> com.test.jsftest.HtmlCellFormat </component-type> <component-class> com.test.jsftest.HtmlCellFormat </component-class> </component> <component> <component-type> com.test.jsftest.HtmlRowLayout </component-type> <component-class> com.test.jsftest.HtmlRowLayout </component-class> </component> <component> <component-type> com.test.jsftest.HtmlTableLayout </component-type> <component-class> com.test.jsftest.HtmlTableLayout </component-class> </component> <render-kit> <renderer> <component-family> javax.faces.Panel </component-family> <renderer-type> com.test.jsftest.HtmlCellFormat </renderer-type> <renderer-class> com.test.jsftest.CellFormatRenderer </renderer-class> </renderer> <renderer> <component-family> javax.faces.Panel </component-family> <renderer-type> com.test.jsftest.HtmlRowLayout </renderer-type> <renderer-class> com.test.jsftest.RowLayoutRenderer </renderer-class> </renderer> <renderer> <component-family> javax.faces.Panel </component-family> <renderer-type> com.test.jsftest.HtmlTableLayout </renderer-type> <renderer-class> com.test.jsftest.TableLayoutRenderer </renderer-class> </renderer> <renderer> <component-family> javax.faces.Input </component-family> <renderer-type> com.test.jsftest.TextCmd </renderer-type> <renderer-class> com.test.jsftest.TextCmdRenderer </renderer-class> </renderer> </render-kit> </faces-config> taglib.xml <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE facelet-taglib PUBLIC "-//Sun Microsystems, Inc.//DTD Facelet Taglib 1.0//EN" "http://java.sun.com/dtd/facelet-taglib_1_0.dtd"> <facelet-taglib xmlns="http://java.sun.com/JSF/Facelet"> <namespace>http://caterpillar.onlyfun.net/custimizedtag</namespace> <tag> <tag-name>textcmd</tag-name> <component> <component-type> com.test.jsftest.TextWithCmd </component-type> <renderer-type> com.test.jsftest.TextCmd </renderer-type> </component> </tag> <tag> <tag-name>cellFormat</tag-name> <component> <component-type> com.test.jsftest.HtmlCellFormat </component-type> <renderer-type> com.test.jsftest.HtmlCellFormat </renderer-type> </component> </tag> <tag> <tag-name>RowLayout</tag-name> <component> <component-type> com.test.jsftest.HtmlRowLayout </component-type> <renderer-type> com.test.jsftest.HtmlRowLayout </renderer-type> </component> </tag> <tag> <tag-name>TableLayout</tag-name> <component> <component-type> com.test.jsftest.HtmlTableLayout </component-type> <renderer-type> com.test.jsftest.HtmlTableLayout </renderer-type> </component> </tag> </facelet-taglib> 声明：ITeye文章版权属于作者，受法律保护。没有作者书面许可不得转载。
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