package org.apache.myfaces.tobago.renderkit.html.scarborough.standard.tag;
/*
* 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.
*/
import org.apache.commons.lang.StringUtils;
import org.apache.myfaces.tobago.component.Attributes;
import org.apache.myfaces.tobago.component.UITreeLabel;
import org.apache.myfaces.tobago.component.UITreeNode;
import org.apache.myfaces.tobago.context.Markup;
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.internal.context.ResponseWriterDivider;
import org.apache.myfaces.tobago.layout.Display;
import org.apache.myfaces.tobago.layout.Measure;
import org.apache.myfaces.tobago.model.TreeSelectable;
import org.apache.myfaces.tobago.renderkit.CommandRendererBase;
import org.apache.myfaces.tobago.renderkit.css.Classes;
import org.apache.myfaces.tobago.renderkit.css.Style;
import org.apache.myfaces.tobago.renderkit.html.HtmlAttributes;
import org.apache.myfaces.tobago.renderkit.html.HtmlElements;
import org.apache.myfaces.tobago.renderkit.html.util.HtmlRendererUtils;
import org.apache.myfaces.tobago.util.ComponentUtils;
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.List;
import java.util.Map;
public class TreeListboxNodeRenderer extends CommandRendererBase {
private static final Logger LOG = LoggerFactory.getLogger(TreeListboxNodeRenderer.class);
// TODO cleanup: there might be some stuff to remove after tree refactoring
@Override
public void decode(FacesContext facesContext, UIComponent component) {
UITreeNode node = (UITreeNode) component;
super.decode(facesContext, node);
if (ComponentUtils.isOutputOnly(node)) {
return;
}
final AbstractUITree tree = ComponentUtils.findAncestor(node, AbstractUITree.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) {
boolean expanded = Boolean.parseBoolean((String) requestParameterMap.get(id + "-expanded"));
if (node.isExpanded() != expanded) {
new TreeExpansionEvent(node, node.isExpanded(), expanded).queue();
}
}
// select
if (tree.getSelectableAsEnum() != TreeSelectable.OFF) { // selection
String selected = (String) requestParameterMap.get(treeId + AbstractUITree.SELECT_STATE);
String searchString = ";" + nodeStateId + ";";
if (StringUtils.contains(selected, searchString)) {
// TODO: add selection to Component
//state.addSelection((DefaultMutableTreeNode) node.getValue());
}
}
// 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.setMarkup(Markup.MARKED.add(node.getMarkup()));
}
}
@Override
public void encodeBegin(FacesContext facesContext, UIComponent component) throws IOException {
final UITreeNode node = (UITreeNode) component;
final AbstractUITree tree = ComponentUtils.findAncestor(node, AbstractUITree.class);
final boolean folder = node.isFolder();
final int level = node.getLevel();
final String id = node.getClientId(facesContext);
final boolean expanded = folder && node.isExpanded();
TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
if (level > 0) { // root will not rendered as an option
writer.startElement(HtmlElements.OPTION, null);
// todo: define where to store the selection of a tree, node.getValue() seems not to be a god place.
// writer.writeAttribute(HtmlAttributes.VALUE, node.getValue().toString(), true); // XXX converter?
writer.writeIdAttribute(id);
writer.writeAttribute(HtmlAttributes.SELECTED, expanded);
writer.writeText("(" + level + ") " + getLabel(node));
if (folder) {
writer.writeText(" \u2192");
}
writer.endElement(HtmlElements.OPTION);
}
if (folder) {
boolean siblingMode = "siblingLeafOnly".equals(tree.getAttributes().get(Attributes.SELECTABLE));
ResponseWriterDivider divider = ResponseWriterDivider.getInstance(facesContext, TreeListboxRenderer.DIVIDER);
boolean alreadyExists = divider.activateBranch(facesContext);
writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
if (!alreadyExists) {
writer.startElement(HtmlElements.DIV, null);
writer.writeClassAttribute(Classes.create(tree, "level"));
Style levelStyle = new Style();
levelStyle.setLeft(Measure.valueOf(level * 160)); // xxx 160 should be configurable
writer.writeStyleAttribute(levelStyle);
// at the start of each div there is an empty and disabled select tag to show empty area.
// this is not needed for the 1st level.
if (level > 0) {
writer.startElement(HtmlElements.SELECT, null);
writer.writeAttribute(HtmlAttributes.DISABLED, true);
writer.writeAttribute(HtmlAttributes.SIZE, 2); // must be > 1, but the size comes from the layout
writer.writeClassAttribute(Classes.create(tree, "select"));
writer.endElement(HtmlElements.SELECT);
}
}
writer.startElement(HtmlElements.SELECT, node);
writer.writeIdAttribute(id + ComponentUtils.SUB_SEPARATOR + "select");
writer.writeClassAttribute(Classes.create(tree, "select"));
if (!expanded) {
Style selectStyle = new Style();
selectStyle.setDisplay(Display.NONE);
}
writer.writeAttribute(HtmlAttributes.SIZE, 2); // must be > 1, but the size comes from the layout
writer.writeAttribute(HtmlAttributes.MULTIPLE, siblingMode);
// XXX insert options here
writer.startElement(HtmlElements.OPTGROUP, null);
writer.writeAttribute(HtmlAttributes.LABEL, getLabel(node), true);
writer.endElement(HtmlElements.OPTGROUP);
}
}
// XXX this is a hotfix, may be better calling the renderer?
private String getLabel(UITreeNode node) {
for (UIComponent component : (List<UIComponent>) node.getChildren()) {
if (component instanceof UITreeLabel) {
return "" + ((UITreeLabel) component).getValue();
}
}
return null;
}
@Override
public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException {
UITreeNode node = (UITreeNode) component;
boolean folder = node.isFolder();
if (folder) {
TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
writer.endElement(HtmlElements.SELECT);
ResponseWriterDivider divider = ResponseWriterDivider.getInstance(facesContext, TreeListboxRenderer.DIVIDER);
divider.passivateBranch(facesContext);
}
}
}