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JSF components and utilities that can be used with any JSF implementation.
This library is compatible with both JSF1.1 and JSF1.2; however for JSF1.2 users there
is an alternative build of Tomahawk available that takes advantage of JSF1.2 features to
offer some additional benefits.
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.myfaces.custom.toggle;
import java.io.IOException;
import java.util.Iterator;
import javax.faces.component.UIComponent;
import javax.faces.component.UIOutput;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.myfaces.component.UserRoleUtils;
import org.apache.myfaces.renderkit.html.ext.HtmlLinkRenderer;
import org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HTML;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlRendererUtils;
/**
* Renderer for component HtmlAjaxChildComboBox
*
*
* @JSFRenderer
* renderKitId = "HTML_BASIC"
* family = "javax.faces.Output"
* type = "org.apache.myfaces.ToggleLink"
*
* @author Sharath Reddy
*/
public class ToggleLinkRenderer extends HtmlLinkRenderer {
public static final int DEFAULT_MAX_SUGGESTED_ITEMS = 200;
protected void renderOutputLinkStart(FacesContext facesContext,
UIOutput output) throws IOException
{
if (UserRoleUtils.isEnabledOnUserRole(output))
{
ResponseWriter writer = facesContext.getResponseWriter();
String clientId = output.getClientId(facesContext);
//write anchor
writer.startElement(HTML.ANCHOR_ELEM, output);
writer.writeAttribute(HTML.ID_ATTR, clientId, null);
writer.writeAttribute(HTML.NAME_ATTR, clientId, null);
writer.writeURIAttribute(HTML.HREF_ATTR, "javascript:void(0);", null);
HtmlRendererUtils
.renderHTMLAttributes(
writer,
output,
org.apache.myfaces.shared_tomahawk.renderkit.html.HTML.ANCHOR_PASSTHROUGH_ATTRIBUTES_WITHOUT_ONCLICK_WITHOUT_STYLE);
HtmlRendererUtils.renderHTMLAttribute(writer, HTML.STYLE_ATTR, HTML.STYLE_ATTR,
output.getAttributes().get(HTML.STYLE_ATTR));
HtmlRendererUtils.renderHTMLAttribute(writer, HTML.STYLE_CLASS_ATTR, HTML.STYLE_CLASS_ATTR,
output.getAttributes().get(HTML.STYLE_CLASS_ATTR));
HtmlRendererUtils.renderHTMLAttribute(writer, HTML.ONCLICK_ATTR, HTML.ONCLICK_ATTR,
buildOnclickToggleFunction(facesContext,output));
writer.flush();
}
}
private String buildOnclickToggleFunction(FacesContext facesContext,
UIOutput output) throws IOException
{
ToggleLink toggleLink = (ToggleLink) output;
TogglePanel togglePanel = getParentTogglePanel(facesContext, toggleLink);
String[] componentsToToggle = toggleLink.getFor().split(",");
String idsToHide = getIdsToHide(facesContext, togglePanel);
StringBuffer idsToShow = new StringBuffer();
for (int i = 0; i < componentsToToggle.length; i++) {
String componentId = componentsToToggle[i].trim();
UIComponent componentToShow = toggleLink.findComponent(componentId);
if (componentToShow == null) {
Log log = LogFactory.getLog(ToggleLinkRenderer.class);
log.error("Unable to find component with id " + componentId);
continue;
}
if( idsToShow.length() > 0 )
idsToShow.append( ',' );
idsToShow.append( componentToShow.getClientId(facesContext) );
}
String outputOnclick = toggleLink.getOnclick();
StringBuffer onClick = new StringBuffer();
if(outputOnclick != null)
{
onClick.append("var cf = function(){");
onClick.append(outputOnclick);
onClick.append('}');
onClick.append(';');
onClick.append("var oamSF = function(){");
}
String onClickFocusClientId = toggleLink.getOnClickFocusId() != null ? toggleLink.findComponent(toggleLink.getOnClickFocusId()).getClientId(facesContext) : "";
onClick.append(getToggleJavascriptFunctionName(facesContext, toggleLink) + "('"+idsToShow+"','" + idsToHide + "','" + getHiddenFieldId(facesContext, togglePanel) + "','" + onClickFocusClientId + "');");
if (outputOnclick != null)
{
onClick.append('}');
onClick.append(';');
onClick.append("return (cf()==false)? false : oamSF();");
}
return onClick.toString();
}
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
RendererUtils.checkParamValidity(context, component, ToggleLink.class);
ToggleLink toggleLink = (ToggleLink) component;
if(isDisabled(context, toggleLink))
return;
super.encodeEnd(context, component);
}
public void encodeBegin(FacesContext context, UIComponent component) throws IOException {
RendererUtils.checkParamValidity(context, component, ToggleLink.class);
ToggleLink toggleLink = (ToggleLink) component;
if(isDisabled(context, toggleLink))
return;
super.encodeBegin(context, component);
}
private String getToggleJavascriptFunctionName(FacesContext context,ToggleLink toggleLink){
for(UIComponent component = toggleLink.getParent(); component != null; component = component.getParent())
if( component instanceof TogglePanel )
return TogglePanelRenderer.getToggleJavascriptFunctionName( context, (TogglePanel)component );
Log log = LogFactory.getLog(ToggleLinkRenderer.class);
log.error("The ToggleLink component with id " + toggleLink.getClientId( context )+" isn't enclosed in a togglePanel.");
return null;
}
private String getIdsToHide(FacesContext facesContext, TogglePanel togglePanel) {
StringBuffer idsToHide = new StringBuffer();
int idsToHideCount = 0;
for(Iterator it = togglePanel.getChildren().iterator(); it.hasNext(); ) {
UIComponent component = (UIComponent) it.next();
if ( TogglePanelRenderer.isHiddenWhenToggled( component ) ) {
if( idsToHideCount > 0 )
idsToHide.append( ',' );
idsToHide.append( component.getClientId( facesContext ) );
idsToHideCount++;
}
}
return idsToHide.toString();
}
private TogglePanel getParentTogglePanel(FacesContext facesContext, ToggleLink toggleLink) {
for(UIComponent component = toggleLink.getParent(); component != null; component = component.getParent()) {
if( component instanceof TogglePanel )
return (TogglePanel) component;
}
return null;
}
private String getHiddenFieldId(FacesContext context, TogglePanel togglePanel){
return togglePanel.getClientId(context) + "_hidden";
}
private boolean isDisabled(FacesContext facesContext, ToggleLink link) {
TogglePanel panel = getParentTogglePanel(facesContext, link);
return panel.isDisabled() || link.isDisabled();
}
}