/*
* 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.RendererTypes;
import org.apache.myfaces.tobago.component.UITreeNode;
import org.apache.myfaces.tobago.component.UITreeSelect;
import org.apache.myfaces.tobago.internal.component.AbstractUITree;
import org.apache.myfaces.tobago.layout.Measure;
import org.apache.myfaces.tobago.renderkit.LayoutComponentRendererBase;
import org.apache.myfaces.tobago.renderkit.css.Classes;
import org.apache.myfaces.tobago.renderkit.css.Position;
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 javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class TreeListboxRenderer extends LayoutComponentRendererBase {
public void prepareRender(FacesContext facesContext, UIComponent component) throws IOException {
super.prepareRender(facesContext, component);
setRendererTypeForCommandsAndNodes(component);
}
protected void setRendererTypeForCommandsAndNodes(UIComponent component) {
for (UIComponent child : component.getChildren()) {
if (child instanceof UITreeNode) {
child.setRendererType(RendererTypes.TREE_LISTBOX_NODE);
}
setRendererTypeForCommandsAndNodes(child);
}
}
@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 {
final AbstractUITree tree = (AbstractUITree) component;
final String clientId = tree.getClientId(facesContext);
final TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
final Style style = new Style(facesContext, tree);
final Style scrollDivStyle = new Style();
writer.startElement(HtmlElements.DIV, tree);
scrollDivStyle.setWidth(Measure.valueOf(6 * 160)); // todo: depth * width of a select
scrollDivStyle.setHeight(style.getHeight() // todo: what, when there is no scrollbar?
.subtract(15)); // todo: scrollbar height
scrollDivStyle.setPosition(Position.ABSOLUTE);
writer.writeStyleAttribute(scrollDivStyle);
writer.startElement(HtmlElements.DIV, tree);
writer.writeClassAttribute(Classes.create(tree));
HtmlRendererUtils.writeDataAttributes(facesContext, writer, tree);
writer.writeStyleAttribute(style);
writer.startElement(HtmlElements.INPUT, tree);
writer.writeAttribute(HtmlAttributes.TYPE, HtmlInputTypes.HIDDEN, false);
writer.writeNameAttribute(clientId);
writer.writeIdAttribute(clientId);
writer.writeAttribute(HtmlAttributes.VALUE, ";", false);
writer.endElement(HtmlElements.INPUT);
writer.startElement(HtmlElements.INPUT, tree);
writer.writeAttribute(HtmlAttributes.TYPE, HtmlInputTypes.HIDDEN, false);
writer.writeNameAttribute(clientId + ComponentUtils.SUB_SEPARATOR + AbstractUITree.SUFFIX_MARKED);
writer.writeIdAttribute(clientId + ComponentUtils.SUB_SEPARATOR + AbstractUITree.SUFFIX_MARKED);
writer.writeAttribute(HtmlAttributes.VALUE, "", false);
writer.endElement(HtmlElements.INPUT);
if (tree.getSelectableAsEnum().isSupportedByTreeListbox()) {
writer.startElement(HtmlElements.INPUT, tree);
writer.writeAttribute(HtmlAttributes.TYPE, HtmlInputTypes.HIDDEN, false);
writer.writeNameAttribute(clientId + AbstractUITree.SELECT_STATE);
writer.writeIdAttribute(clientId + AbstractUITree.SELECT_STATE);
writer.writeAttribute(HtmlAttributes.VALUE, ";", false);
writer.writeAttribute(DataAttributes.SELECTION_MODE, tree.getSelectableAsEnum().name(), false);
writer.endElement(HtmlElements.INPUT);
}
List<Integer> thisLevel = new ArrayList<Integer>();
thisLevel.add(0);
List<Integer> nextLevel = new ArrayList<Integer>();
int depth = tree.getTreeDataModel().getDepth() != -1
? tree.getTreeDataModel().getDepth()
: 7; // XXX not a fix value!!!
// todo: use (TreeListbox ?)Layout
Measure currentWidth = tree.getCurrentWidth();
Measure width = currentWidth.divide(depth);
for (int level = 0; level < depth; level++) {
writer.startElement(HtmlElements.DIV, null);
writer.writeClassAttribute(Classes.create(tree, "level"));
Style levelStyle = new Style();
levelStyle.setLeft(width.multiply(level));
levelStyle.setWidth(width);
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, 9); // must be > 1, but the real size comes from the layout
writer.writeClassAttribute(Classes.create(tree, "select"));
writer.endElement(HtmlElements.SELECT);
}
for(Integer rowIndex : thisLevel) {
encodeSelectBox(facesContext, tree, writer, rowIndex, nextLevel);
}
thisLevel.clear();
List<Integer> swap = thisLevel;
thisLevel = nextLevel;
nextLevel = swap;
writer.endElement(HtmlElements.DIV);
}
writer.endElement(HtmlElements.DIV);
writer.endElement(HtmlElements.DIV);
tree.setRowIndex(-1);
}
private void encodeSelectBox(
FacesContext facesContext, AbstractUITree tree, TobagoResponseWriter writer,
int parentRowIndex, List<Integer> foldersRowIndices)
throws IOException {
tree.setRowIndex(parentRowIndex);
final UITreeNode node = ComponentUtils.findDescendant(tree, UITreeNode.class);
final String parentId = node.getClientId(facesContext);
writer.startElement(HtmlElements.SELECT, tree);
writer.writeClassAttribute(Classes.create(tree, "select"));
if (parentId != null) {
writer.writeAttribute(DataAttributes.TREE_PARENT, parentId, false);
}
writer.writeAttribute(HtmlAttributes.SIZE, 9); // must be > 1, but the real size comes from the layout
// writer.writeAttribute(HtmlAttributes.MULTIPLE, siblingMode);
final UITreeSelect label = ComponentUtils.findDescendant(tree, UITreeSelect.class);
final Object labelValue = label.getLabel();
if (labelValue != null) {
writer.startElement(HtmlElements.OPTGROUP, tree);
writer.writeAttribute(HtmlAttributes.LABEL, labelValue.toString(), true);
writer.endElement(HtmlElements.OPTGROUP);
}
final List<Integer> rowIndices = tree.getRowIndicesOfChildren();
for (Integer rowIndex : rowIndices) {
tree.setRowIndex(rowIndex);
if (!tree.isRowAvailable()) {
break;
}
for (UIComponent child : tree.getChildren()) {
RenderUtils.prepareRendererAll(facesContext, child);
RenderUtils.encode(facesContext, child);
}
if (tree.isFolder()) {
foldersRowIndices.add(rowIndex);
}
}
writer.endElement(HtmlElements.SELECT);
}
}