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* 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.component.UITreeMenu;
import org.apache.myfaces.tobago.component.UITreeNode;
import org.apache.myfaces.tobago.context.Markup;
import org.apache.myfaces.tobago.context.ResourceManagerUtils;
import org.apache.myfaces.tobago.context.UserAgent;
import org.apache.myfaces.tobago.event.TreeExpansionEvent;
import org.apache.myfaces.tobago.event.TreeMarkedEvent;
import org.apache.myfaces.tobago.internal.component.AbstractUITree;
import org.apache.myfaces.tobago.layout.Display;
import org.apache.myfaces.tobago.renderkit.LayoutComponentRendererBase;
import org.apache.myfaces.tobago.renderkit.css.Classes;
import org.apache.myfaces.tobago.renderkit.css.Style;
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.HtmlInputTypes;
import org.apache.myfaces.tobago.renderkit.html.util.HtmlRendererUtils;
import org.apache.myfaces.tobago.renderkit.util.RenderUtils;
import org.apache.myfaces.tobago.util.ComponentUtils;
import org.apache.myfaces.tobago.util.VariableResolverUtils;
import org.apache.myfaces.tobago.webapp.TobagoResponseWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.faces.component.NamingContainer;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import java.io.IOException;
import java.util.Map;
public class TreeMenuNodeRenderer extends LayoutComponentRendererBase {
private static final Logger LOG = LoggerFactory.getLogger(TreeMenuNodeRenderer.class);
@Override
public void decode(FacesContext facesContext, UIComponent component) {
UITreeNode node = (UITreeNode) component;
super.decode(facesContext, node);
if (ComponentUtils.isOutputOnly(node)) {
return;
}
final UITreeMenu tree = ComponentUtils.findAncestor(node, UITreeMenu.class);
final String treeId = tree.getClientId(facesContext);
final String nodeStateId = node.nodeStateId(facesContext);
final Map<String, String> requestParameterMap = facesContext.getExternalContext().getRequestParameterMap();
final String id = node.getClientId(facesContext);
final boolean folder = node.isFolder();
// expand state
// if (folder) { XXX this value seems to be not restored...
boolean expanded = Boolean.parseBoolean(requestParameterMap.get(id + ComponentUtils.SUB_SEPARATOR + "expanded"));
if (node.isExpanded() != expanded) {
new TreeExpansionEvent(node, node.isExpanded(), expanded).queue();
}
// }
// marked
String marked = (String) requestParameterMap.get(treeId + ComponentUtils.SUB_SEPARATOR + AbstractUITree.MARKED);
if (marked != null) {
String searchString = treeId + NamingContainer.SEPARATOR_CHAR + nodeStateId;
boolean markedValue = marked.equals(searchString);
if (node.isMarked() != markedValue) {
new TreeMarkedEvent(node, node.isMarked(), markedValue).queue();
}
} else {
LOG.warn("This log message is help clarifying the occurrence of this else case.");
}
}
@Override
public void prepareRender(FacesContext facesContext, UIComponent component) throws IOException {
super.prepareRender(facesContext, component);
final UITreeNode node = (UITreeNode) component;
if (node.isMarked()) {
node.setCurrentMarkup(Markup.MARKED.add(node.getCurrentMarkup()));
}
if (node.isFolder()) {
node.setCurrentMarkup(Markup.FOLDER.add(node.getCurrentMarkup()));
if (node.isExpanded()) {
node.setCurrentMarkup(Markup.EXPANDED.add(node.getCurrentMarkup()));
}
}
}
@Override
public void encodeBegin(FacesContext facesContext, UIComponent component) throws IOException {
final UITreeNode node = (UITreeNode) component;
final UITreeMenu tree = ComponentUtils.findAncestor(node, UITreeMenu.class);
final boolean folder = node.isFolder();
final String id = node.getClientId(facesContext);
final int level = node.getLevel();
final boolean root = level == 0;
final boolean expanded = folder && node.isExpanded() || level == 0;
final boolean showRoot = tree.isShowRoot();
final boolean ie6
= VariableResolverUtils.resolveClientProperties(facesContext).getUserAgent().equals(UserAgent.MSIE_6_0);
// XXX todo: find a better way to determine the parentId
final String clientId = node.getClientId(facesContext);
final int colon2 = clientId.lastIndexOf(":");
final int colon1 = clientId.substring(0, colon2 - 1).lastIndexOf(":");
final String structure = clientId.substring(colon1 + 1, colon2);
String parentStructure = getParentStructure(structure);
final String parentId = root ? null : clientId.substring(0, colon1 + 1) + parentStructure + clientId.substring(colon2);
final TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
if (expanded) {
tree.getExpandedCache().add(structure);
}
if (showRoot || !root) {
writer.startElement(HtmlElements.DIV, null);
writer.writeIdAttribute(id);
writer.writeClassAttribute(Classes.create(node));
writer.writeAttribute(DataAttributes.TREEPARENT, parentId, false);
HtmlRendererUtils.writeDataAttributes(facesContext, writer, node);
if (!root) {
while (parentStructure != null) {
if (!tree.getExpandedCache().contains(parentStructure)) {
Style style = new Style();
style.setDisplay(Display.NONE);
writer.writeStyleAttribute(style);
break;
}
parentStructure = getParentStructure(parentStructure);
}
}
if (folder) {
encodeExpandedHidden(writer, node, id, expanded);
}
if (!folder && ie6) { // XXX IE6: without this hack, we can't click beside the label text. Why?
final String src = ResourceManagerUtils.getImageWithPath(facesContext, "image/1x1.gif");
writer.startElement(HtmlElements.IMG, null);
writer.writeClassAttribute(Classes.create(node, "icon"));
writer.writeAttribute(HtmlAttributes.SRC, src, false);
writer.writeAttribute(HtmlAttributes.ALT, "", false);
writer.writeStyleAttribute("width: 0px");
writer.endElement(HtmlElements.IMG);
}
RenderUtils.encodeChildren(facesContext, node);
if (folder) {
encodeIcon(facesContext, writer, expanded, node);
}
writer.endElement(HtmlElements.DIV);
}
}
private String getParentStructure(String structure) {
final int underscore = structure.lastIndexOf("_");
return underscore <= 0 ? null : structure.substring(0, underscore);
}
private void encodeExpandedHidden(
TobagoResponseWriter writer, UITreeNode node, String clientId, boolean expanded) throws IOException {
writer.startElement(HtmlElements.INPUT, node);
writer.writeAttribute(HtmlAttributes.TYPE, HtmlInputTypes.HIDDEN, false);
writer.writeClassAttribute(Classes.create(node, "expanded", Markup.NULL));
writer.writeNameAttribute(clientId + ComponentUtils.SUB_SEPARATOR + "expanded");
writer.writeAttribute(HtmlAttributes.VALUE, Boolean.toString(expanded), false);
writer.endElement(HtmlElements.INPUT);
}
private void encodeIcon(FacesContext facesContext, TobagoResponseWriter writer, boolean expanded, UITreeNode node)
throws IOException {
final String srcOpen = ResourceManagerUtils.getImageWithPath(facesContext, "image/treeMenuOpen.gif");
final String srcClose = ResourceManagerUtils.getImageWithPath(facesContext, "image/treeMenuClose.gif");
final String src = expanded ? srcOpen : srcClose;
writer.startElement(HtmlElements.IMG, null);
writer.writeClassAttribute(Classes.create(node, "toggle"));
writer.writeAttribute(HtmlAttributes.SRC, src, false);
writer.writeAttribute(DataAttributes.SRCOPEN, srcOpen, false);
writer.writeAttribute(DataAttributes.SRCCLOSE, srcClose, false);
writer.writeAttribute(HtmlAttributes.ALT, "", false);
writer.endElement(HtmlElements.IMG);
}
}