/*
* 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.tobago.renderkit.html.scarborough.standard.tag;
import org.apache.myfaces.tobago.config.Configurable;
import org.apache.myfaces.tobago.context.ResourceManagerUtils;
import org.apache.myfaces.tobago.internal.component.AbstractUILink;
import org.apache.myfaces.tobago.internal.util.AccessKeyMap;
import org.apache.myfaces.tobago.layout.Measure;
import org.apache.myfaces.tobago.layout.PixelMeasure;
import org.apache.myfaces.tobago.renderkit.CommandRendererBase;
import org.apache.myfaces.tobago.renderkit.LabelWithAccessKey;
import org.apache.myfaces.tobago.renderkit.css.Classes;
import org.apache.myfaces.tobago.renderkit.css.Style;
import org.apache.myfaces.tobago.renderkit.html.Command;
import org.apache.myfaces.tobago.renderkit.html.CommandMap;
import org.apache.myfaces.tobago.renderkit.html.DataAttributes;
import org.apache.myfaces.tobago.renderkit.html.HtmlAttributes;
import org.apache.myfaces.tobago.renderkit.html.HtmlElements;
import org.apache.myfaces.tobago.renderkit.html.JsonUtils;
import org.apache.myfaces.tobago.renderkit.html.util.HtmlRendererUtils;
import org.apache.myfaces.tobago.renderkit.util.RenderUtils;
import org.apache.myfaces.tobago.webapp.TobagoResponseWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import java.io.IOException;
public class LinkRenderer extends CommandRendererBase {
private static final Logger LOG = LoggerFactory.getLogger(LinkRenderer.class);
public void encodeBegin(FacesContext facesContext, UIComponent component) throws IOException {
final AbstractUILink link = (AbstractUILink) component;
final String clientId = link.getClientId(facesContext);
final boolean disabled = link.isDisabled();
// final CommandRendererHelper helper = new CommandRendererHelper(facesContext, link, CommandRendererHelper.Tag.ANCHOR);
// final String href = helper.getHref();
final TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
LabelWithAccessKey label = new LabelWithAccessKey(link);
if (disabled) {
writer.startElement(HtmlElements.SPAN, link);
} else {
writer.startElement(HtmlElements.A, link);
// writer.writeAttribute(HtmlAttributes.HREF, href, true); XXX
final CommandMap map = new CommandMap(new Command(facesContext, link));
writer.writeAttribute(DataAttributes.COMMANDS, JsonUtils.encode(map), true);
writer.writeAttribute(HtmlAttributes.HREF, "#", false);
if (label.getAccessKey() != null) {
writer.writeAttribute(HtmlAttributes.ACCESSKEY, Character.toString(label.getAccessKey()), false);
}
final Integer tabIndex = link.getTabIndex();
if (tabIndex != null) {
writer.writeAttribute(HtmlAttributes.TABINDEX, tabIndex);
}
}
HtmlRendererUtils.writeDataAttributes(facesContext, writer, link);
Style style = new Style(facesContext, link);
writer.writeStyleAttribute(style);
HtmlRendererUtils.renderDojoDndItem(component, writer, true);
writer.writeClassAttribute(Classes.create(link));
writer.writeIdAttribute(clientId);
writer.writeNameAttribute(clientId);
HtmlRendererUtils.renderTip(link, writer);
writer.flush();
// image
String image = link.getImage();
if (image != null) {
if (ResourceManagerUtils.isAbsoluteResource(image)) {
// absolute Path to image : nothing to do
} else {
image = getImageWithPath(facesContext, image, disabled);
}
writer.startElement(HtmlElements.IMG, link);
writer.writeClassAttribute(Classes.create(link, "image"));
writer.writeAttribute(HtmlAttributes.SRC, image, true);
writer.writeAttribute(HtmlAttributes.BORDER, 0); // TODO: is border=0 setting via style possible?
String tip = link.getTip();
writer.writeAttribute(HtmlAttributes.ALT, tip != null ? tip : "", true);
if (tip != null) {
writer.writeAttribute(HtmlAttributes.TITLE, tip, true);
}
writer.endElement(HtmlElements.IMG);
}
// label
if (label.getText() != null) {
if (image != null) {
writer.write(" "); // separator: e.g.
}
HtmlRendererUtils.writeLabelWithAccessKey(writer, label);
}
if (label.getAccessKey() != null && !disabled) {
if (LOG.isInfoEnabled()
&& !AccessKeyMap.addAccessKey(facesContext, label.getAccessKey())) {
LOG.info("duplicated accessKey : " + label.getAccessKey());
}
//HtmlRendererUtils.addClickAcceleratorKey(facesContext, clientId, label.getAccessKey());
}
}
public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException {
AbstractUILink link = (AbstractUILink) component;
ResponseWriter writer = facesContext.getResponseWriter();
if (link.isDisabled()) {
writer.endElement(HtmlElements.SPAN);
} else {
writer.endElement(HtmlElements.A);
}
}
@Override
public Measure getPreferredWidth(FacesContext facesContext, Configurable component) {
final AbstractUILink link = (AbstractUILink) component;
final LabelWithAccessKey label = new LabelWithAccessKey(link);
final String text = label.getText();
final String image = link.getImage();
Measure width = PixelMeasure.ZERO;
if (text != null) {
final Measure m = RenderUtils.calculateStringWidth(facesContext, link, text);
width = width.add(m);
}
if ((text != null && image != null)) {
width = width.add(4);
}
if (image != null) {
width = width.add(16);
}
return width;
}
}