Custom component - Pivot Table
Hi.
I want to write custom component that shows in my application an Pivot Table with links in header such as Down, Up etc...
I dont want to use CDK, because this component is too complicated to write it with any template.
I write already component, tag and renderer class and configure them in eclipse project. My component works as simple JSF component and writes to output html table, but I dont know how can I write link to raise custom events.
What should I do to enable Ajax events for custom component?
Can someone send me any custom component with custom events, that would be base for my component?
My code is below:
DataSubgroupRenderer:
package bdr.components;
import java.io.IOException;
import java.util.Map;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.render.Renderer;
public class DataSubgroupRenderer extends Renderer {
@SuppressWarnings("unchecked")
@Override
public void decode(FacesContext context, UIComponent component) {
//super.decode(context, component);
Map requestMap = context.getExternalContext().getRequestParameterMap();
String clientId = component.getClientId(context);
UIDataSubgroup dsComp = (UIDataSubgroup)component;
try {
if (requestMap.get(clientId+ ".vertical")!=null) {
dsComp.setHorizontal(false);
} else if (requestMap.get(clientId+ ".horizontal")!=null) {
dsComp.setHorizontal(true);
}
dsComp.setValid(true);
} catch (NumberFormatException ex) {
dsComp.setSubmittedValue((String) requestMap.get(clientId));
}
}
@Override
public void encodeBegin(FacesContext context, UIComponent component)
throws IOException {
//super(context, component);
ResponseWriter writer = context.getResponseWriter();
String clientId = component.getClientId(context);
UIDataSubgroup dsComp = (UIDataSubgroup)component;
//generate buttons
if (dsComp.isHorizontal()) {
writer.startElement("input", dsComp);
writer.writeAttribute("type", "Submit", null);
writer.writeAttribute("name", clientId+".vertical", "clientId");
writer.writeAttribute("value", "Goto Vertical", null);
writer.endElement("input");
} else {
writer.startElement("input", dsComp);
writer.writeAttribute("type", "Submit", null);
writer.writeAttribute("name", clientId+".horizontal", "clientId");
writer.writeAttribute("value", "Goto Horizontal", null);
writer.endElement("input");
}
//generate table
if (dsComp.isHorizontal()) {
writer.write("<table border='1' cellspacing='0' cellpadding='0'>");
for (int i=0;i<Integer.valueOf(dsComp.getRows()).intValue();i++) {
writer.write("<tr>");
for (int j=0;j<Integer.valueOf(dsComp.getColumns()).intValue();j++) {
writer.write("<td>"+i+","+j+"</td>");
}
writer.write("</tr>");
}
writer.write("</table>");
} else {
writer.write("<table border='1' cellspacing='0' cellpadding='0'>");
for (int i=0;i<Integer.valueOf(dsComp.getColumns()).intValue();i++) {
writer.write("<tr>");
for (int j=0;j<Integer.valueOf(dsComp.getRows()).intValue();j++) {
writer.write("<td>"+i+","+j+"</td>");
}
writer.write("</tr>");
}
writer.write("</table>");
}
}
}
DataSubgroupTag:
package bdr.components;
import javax.el.ValueExpression;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.webapp.UIComponentELTag;
public class DataSubgroupTag extends UIComponentELTag {
public ValueExpression rows;
public ValueExpression columns;
@Override
public String getComponentType() {
return UIDataSubgroup.COMPONENT_TYPE;
}
@Override
public String getRendererType() {
return UIDataSubgroup.RENDERER_TYPE;
}
@Override
protected void setProperties(UIComponent component) {
super.setProperties(component);
UIDataSubgroup dsComp = null;
try {
dsComp = (UIDataSubgroup)component;
} catch (ClassCastException ex) {
throw new IllegalStateException("Component: "+component.toString()+" not expected type. Expected bdr.components.UIDataSubgroup.");
}
if (rows != null) {
component.setValueExpression("rows", this.rows);
}
if (columns != null) {
component.setValueExpression("columns", this.columns);
}
}
public void release() {
super.release();
rows = null;
columns = null;
}
public ValueExpression getRows() {
return rows;
}
public void setRows(ValueExpression rows) {
this.rows = rows;
}
public ValueExpression getColumns() {
return columns;
}
public void setColumns(ValueExpression columns) {
this.columns = columns;
}
}
UIDataSubgroup:
package bdr.components;
import javax.el.ValueExpression;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
public class UIDataSubgroup extends UIInput {
public static final String COMPONENT_TYPE = "bdr.components.DataSubgroup";
public static final String RENDERER_TYPE = "bdr.components.DataSubgroupRenderer";
private boolean horizontal = true;
private Integer rows;
private Integer columns;
public UIDataSubgroup() {
setRendererType(RENDERER_TYPE);
this.horizontal = true;
}
@Override
public String getFamily() {
return COMPONENT_TYPE;
}
public boolean isHorizontal() {
return horizontal;
}
public void setHorizontal(boolean horizontal) {
this.horizontal = horizontal;
}
public Integer getRows() {
if (null!=this.rows) {
return this.rows;
}
ValueExpression _ve = getValueExpression("rows");
Object val = _ve.getValue(getFacesContext().getELContext());
return (_ve!=null)?(Integer)_ve.getValue(getFacesContext().getELContext()):null;
}
public void setRows(Integer rows) {
this.rows = rows;
}
public Integer getColumns() {
if (null!=this.columns) {
return this.columns;
}
ValueExpression _ve = getValueExpression("columns");
return (_ve!=null)?(Integer)_ve.getValue(getFacesContext().getELContext()):null;
}
public void setColumns(Integer columns) {
this.columns = columns;
}
@Override
public void restoreState(FacesContext context, Object state) {
Object values[] = (Object[]) state;
super.restoreState(context, values[0]);
if (((String)values[1]).equals("H"))
this.horizontal = true;
else
this.horizontal = false;
this.rows = (Integer)values[2];
this.columns = (Integer)values[3];
}
@Override
public Object saveState(FacesContext context) {
Object values[] = new Object[4];
values[0] = super.saveState(context);
if (this.horizontal)
values[1] = "H";
else
values[1] = "V";
values[2] = this.rows;
values[3] = this.columns;
return values;
}
}
bdr-components-taglib.xml
<taglib xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-jsptaglibrary_2_1.xsd" version="2.1"> <tlib-version>1.0</tlib-version> <short-name>bdr-components-taglib</short-name> <uri>bdr-components-taglib</uri> <tag> <name>dataSubgroup</name> <tag-class>bdr.components.DataSubgroupTag</tag-class> <attribute> <name>binding</name> <description> A value binding that points to a bean property </description> </attribute> <attribute> <name>id</name> <description>The client id of this component</description> </attribute> <attribute> <name>rendered</name> <description>Is this component rendered?</description> </attribute> <attribute> <name>rows</name> <description>Is this component rendered?</description> <rtexprvalue>true</rtexprvalue> <deferred-value><type>java.lang.Object</type></deferred-value> </attribute> <attribute> <name>columns</name> <description>Is this component rendered?</description> <rtexprvalue>true</rtexprvalue> <deferred-value><type>java.lang.Object</type></deferred-value> </attribute> </tag> </taglib>
faces-config.xml
<?xml version="1.0" encoding="UTF-8"?> <faces-config xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd" version="1.2"> <application> <message-bundle>resources.application</message-bundle> <locale-config> <default-locale>en</default-locale> <supported-locale>pl</supported-locale> <supported-locale>en</supported-locale> </locale-config> </application> <component> <component-type>bdr.components.DataSubgroup</component-type> <component-class>bdr.components.UIDataSubgroup</component-class> <component-extension> <renderer-type>bdr.components.DataSubgroupRenderer</renderer-type> </component-extension> </component> <render-kit> <description>Renderkit implementation for the DataSubgroup component</description> <renderer> <component-family>bdr.components.DataSubgroup</component-family> <renderer-type>bdr.components.DataSubgroupRenderer</renderer-type> <renderer-class>bdr.components.DataSubgroupRenderer</renderer-class> </renderer> </render-kit> <managed-bean> <managed-bean-name>dataSubgrBean</managed-bean-name> <managed-bean-class>bdr.beans.DataSubgroupBean</managed-bean-class> <managed-bean-scope>session</managed-bean-scope> </managed-bean> </faces-config>
Please help me. Thanks.
SM
