JSF
Your trail: 

This page (revision-8) was last changed on 19-Sep-2018 13:22 by Dieter Käppel

This page was created on 22-Oct-2010 13:36 by Dieter Käppel

Only authorized users are allowed to rename pages.

Only authorized users are allowed to delete pages.

Page revision history

Version Date Modified Size Author Changes ... Change note
8 19-Sep-2018 13:22 8 KB Dieter Käppel to previous
7 19-Sep-2018 13:22 8 KB Dieter Käppel to previous | to last
6 19-Sep-2018 13:21 8 KB Dieter Käppel to previous | to last
5 09-Jan-2014 11:03 8 KB Dieter Käppel to previous | to last
4 04-Nov-2010 15:47 6 KB Dieter Käppel to previous | to last
3 03-Nov-2010 14:20 4 KB Dieter Käppel to previous | to last
2 29-Oct-2010 17:16 2 KB Dieter Käppel to previous | to last
1 22-Oct-2010 13:36 2 KB Dieter Käppel to last

Page References

Incoming links Outgoing links
JSF
JSF

Version management

Difference between version and

At line 1 changed one line
!!!Parameterisierter Validator Tag
!Parameterisierter Validator Tag
At line 95 removed 234 lines
intersult.tld
{{{
<tag>
<name>SomeValidator</name>
<tag-class/>
<body-content>empty</body-content>
<attribute>
<name>type</name>
</attribute>
</tag>
}}}
!!!ViewHandler
{{{
package com.intersult.jsf;
import java.io.IOException;
import javax.faces.FacesException;
import javax.faces.application.ViewHandler;
import javax.faces.component.UIComponent;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import com.sun.facelets.FaceletViewHandler;
import com.sun.facelets.tag.jsf.ComponentSupport;
public class PartialViewHandler extends FaceletViewHandler {
public PartialViewHandler(ViewHandler parent) {
super(parent);
}
@Override
public void renderView(FacesContext context, UIViewRoot viewToRender) throws IOException, FacesException {
String region = context.getExternalContext().getRequestParameterMap().get("region");
if (region == null) {
super.renderView(context, viewToRender);
} else {
renderRegion(context, viewToRender, region);
}
}
private void renderRegion(FacesContext context, UIViewRoot viewToRender, String region) {
try {
this.buildView(context, viewToRender);
UIComponent component = viewToRender.findComponent(region);
ResponseWriter writer = super.createResponseWriter(context);
FacesContext.getCurrentInstance().setResponseWriter(writer);
ComponentSupport.encodeRecursive(context, component);
writer.close();
FacesContext.getCurrentInstance().responseComplete();
} catch (IOException exception) {
throw new RuntimeException(exception);
}
}
@Override
public void writeState(FacesContext context) throws IOException {
String region = context.getExternalContext().getRequestParameterMap().get("region");
if (region == null)
super.writeState(context);
}
}
}}}
!!!Einfache Komponente
Component:
{{{
public class OutputStream extends UIComponentBase {
private String url;
@Override
public String getFamily() {
return "javax.faces.Output";
}
public String getUrl() {
ValueExpression expression = getValueExpression("url");
if (expression != null)
return (String)expression.getValue(getFacesContext().getELContext());
return url;
}
public void setUrl(String url) {
this.url = url;
}
}
}}}
Renderer:
{{{
public class OutputStreamRenderer extends Renderer {
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
OutputStream outputStream = (OutputStream)component;
ResponseWriter writer = context.getResponseWriter();
URL url = new URL(outputStream.getUrl());
InputStream inputStream = null;
try {
inputStream = url.openStream();
IOUtils.copy(inputStream, writer);
} finally {
if (inputStream != null)
inputStream.close();
}
}
}
}}}
faces-config.xml:
{{{
<component>
<component-type>intersult.OutputStream</component-type>
<component-class>com.intersult.OutputStream</component-class>
</component>
<render-kit>
<render-kit-id>HTML_BASIC</render-kit-id>
<renderer>
<component-family>javax.faces.Output</component-family>
<renderer-type>intersult.OutputStream</renderer-type>
<renderer-class>com.intersult.OutputStreamRenderer</renderer-class>
</renderer>
</render-kit>
}}}
intersult.taglib.xml:
{{{
<tag>
<tag-name>outputStream</tag-name>
<component>
<component-type>intersult.OutputStream</component-type>
<renderer-type>intersult.OutputStream</renderer-type>
</component>
</tag>
}}}
!!!ClearValuesActionListener
ClearValuesActionListenerHandler:
{{{
public class ClearValuesActionListenerHandler extends TagHandler {
public static class ClearValuesActionListener implements ActionListener, Serializable {
private ValueExpression forValue;
public ClearValuesActionListener() {
}
public ClearValuesActionListener(ValueExpression forValue) {
this.forValue = forValue;
}
public ValueExpression getFor() {
return forValue;
}
public void setFor(ValueExpression forValue) {
this.forValue = forValue;
}
@Override
public void processAction(ActionEvent actionEvent) {
String id = (String)forValue.getValue(FacesContext.getCurrentInstance().getELContext());
UIComponent component =
RendererUtils.getInstance().findComponentFor(actionEvent.getComponent(), id);
clearValues(component);
}
private void clearValues(UIComponent component) {
if (component instanceof UIInput) {
UIInput input = (UIInput)component;
input.setSubmittedValue(null);
}
for (UIComponent child : component.getChildren()) {
clearValues(child);
}
}
}
private TagAttribute forAttribute;
public ClearValuesActionListenerHandler(TagConfig config) {
super(config);
forAttribute = getRequiredAttribute("for");
}
@Override
public void apply(FaceletContext context, UIComponent parent) {
if (!(parent instanceof ActionSource))
throw new TagException(tag, "Parent component must be action source");
ActionSource actionSource = (ActionSource)parent;
ValueExpression forValue = forAttribute.getValueExpression(context, String.class);
actionSource.addActionListener(new ClearValuesActionListener(forValue));
}
}
}}}
Taglib:
{{{
<tag>
<tag-name>clearValuesActionListener</tag-name>
<handler-class>com.intersult.ClearValuesActionListenerHandler</handler-class>
</tag>
}}}
!!!RES_NOT_FOUND finden
Wenn im HTML-Code Stylesheets, Javascripts oder andere Resourcen als
{{{
<link type="text/css" rel="stylesheet" href="RES_NOT_FOUND"/>
}}}
gerendert werden, ist die Quelle des Fehlers oft schwer zu finden. Dazu kann ein Breakpoint in
{{{ com.sun.faces.renderkit.html_basic.HtmlResponseWriter.writeURIAttributeIgnoringPassThroughAttributes(String, Object, String, boolean)
}}}
gesetzt werden mit der Condition
{{{
"RES_NOT_FOUND".equals(value)
}}}
und dann entsprechend im Stack zur Ursache zurückgegangen werden, etwa zu
{{{
com.sun.faces.renderkit.html_basic.ScriptStyleBaseRenderer.encodeEnd(FacesContext, UIComponent) line: 249
}}}
dort findet man
{{{
Resource resource = resourceHandler.createResource(name, library);
}}}
den Name und Library der angeforderten Resources.
This page (revision-8) was last changed on 19-Sep-2018 13:22 by Dieter Käppel Top
Übersicht
Startseite
Das Unternehmen
Produkte
Consulting
Referenzen

Jobmarkt
Jobangebote
Profile

Hilfe
Suche
Seitenindex
Letzte Änderungen
Sichere Verbindung

Systeme
Tickets
Jenkins
Nexus
SVN
Email Client
1350 Aufrufe

referenziert von
Activate JS
Expert Query Language
Faces Filter
Intersult Expert
Intersult Produkte
Intersult expert
JPA Support
JSF Activate JS
JSF Bitcons
JSF Ext
JSF Ext Events
JSF Ext Functions
JSF Ext Tags
JSF Workspace
JSF-JQuery
JSF-JQuery 2
Javascript Frameworks
Jsf ext
Jsf ext events
Jsf ext tags

...and 6 more

© 2022 Intersult GmbH | Jobs | Kontakt | Presse | AGB | Impressum | Cookies | Datenschutz | Serverzeit 2024.11.21 20:39:17 GMT