/*
* 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.UITreeNode;
import org.apache.myfaces.tobago.internal.component.AbstractUIData;
import org.apache.myfaces.tobago.internal.component.AbstractUITree;
import org.apache.myfaces.tobago.model.ExpandedState;
import org.apache.myfaces.tobago.model.SelectedState;
import org.apache.myfaces.tobago.model.Selectable;
import org.apache.myfaces.tobago.model.TreePath;
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.webapp.TobagoResponseWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import java.io.IOException;
public class TreeRenderer extends LayoutComponentRendererBase {
private static final Logger LOG = LoggerFactory.getLogger(TreeRenderer.class);
@Override
public void decode(FacesContext facesContext, UIComponent component) {
final AbstractUITree tree = (AbstractUITree) component;
RenderUtils.decodedStateOfTreeData(facesContext, tree);
}
@Override
public boolean getRendersChildren() {
return true;
}
@Override
public void encodeChildren(FacesContext context, UIComponent component) throws IOException {
// will be rendered in encodeEnd()
}
@Override
public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException {
AbstractUITree tree = (AbstractUITree) component;
String clientId = tree.getClientId(facesContext);
UIComponent root = ComponentUtils.findDescendant(tree, UITreeNode.class);
if (root == null) {
LOG.error("Can't find the tree root. This may occur while updating a tree from Tobago 1.0 to 1.5. "
+ "Please refer the documentation to see how to use tree tags.");
return;
}
TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
writer.startElement(HtmlElements.DIV, tree);
writer.writeClassAttribute(Classes.create(tree));
Style style = new Style(facesContext, tree);
writer.writeStyleAttribute(style);
writer.writeIdAttribute(clientId);
HtmlRendererUtils.writeDataAttributes(facesContext, writer, tree);
final Selectable selectable = tree.getSelectableAsEnum();
if (selectable.isSupportedByTree()) {
writer.writeAttribute(DataAttributes.SELECTABLE, selectable.getValue(), false);
}
final SelectedState selectedState = tree.getSelectedState();
final StringBuilder selectedValue = new StringBuilder(",");
final ExpandedState expandedState = tree.getExpandedState();
final StringBuilder expandedValue = new StringBuilder(",");
final int last = tree.isRowsUnlimited() ? Integer.MAX_VALUE : tree.getFirst() + tree.getRows();
for (int rowIndex = tree.getFirst(); rowIndex < last; rowIndex++) {
tree.setRowIndex(rowIndex);
if (!tree.isRowAvailable()) {
break;
}
final TreePath path = tree.getPath();
if (selectedState.isSelected(path)) {
selectedValue.append(rowIndex);
selectedValue.append(",");
}
if (tree.isFolder() && expandedState.isExpanded(path)) {
expandedValue.append(rowIndex);
expandedValue.append(",");
}
for (UIComponent child : tree.getChildren()) {
RenderUtils.prepareRendererAll(facesContext, child);
RenderUtils.encode(facesContext, child);
}
}
tree.setRowIndex(-1);
writer.startElement(HtmlElements.INPUT, tree);
writer.writeAttribute(HtmlAttributes.TYPE, HtmlInputTypes.HIDDEN, false);
final String selectedId = clientId + ComponentUtils.SUB_SEPARATOR + AbstractUITree.SUFFIX_SELECTED;
writer.writeNameAttribute(selectedId);
writer.writeIdAttribute(selectedId);
writer.writeClassAttribute(Classes.create(tree, AbstractUITree.SUFFIX_SELECTED));
writer.writeAttribute(HtmlAttributes.VALUE, selectedValue.toString(), false);
writer.endElement(HtmlElements.INPUT);
writer.startElement(HtmlElements.INPUT, tree);
writer.writeAttribute(HtmlAttributes.TYPE, HtmlInputTypes.HIDDEN, false);
final String expandedId = clientId + ComponentUtils.SUB_SEPARATOR + AbstractUIData.SUFFIX_EXPANDED;
writer.writeNameAttribute(expandedId);
writer.writeIdAttribute(expandedId);
writer.writeClassAttribute(Classes.create(tree, AbstractUIData.SUFFIX_EXPANDED));
writer.writeAttribute(HtmlAttributes.VALUE, expandedValue.toString(), false);
writer.endElement(HtmlElements.INPUT);
writer.endElement(HtmlElements.DIV);
}
@Override
public boolean getPrepareRendersChildren() {
return true;
}
}