/*
* 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.UITree;
import org.apache.myfaces.tobago.component.UITreeIndent;
import org.apache.myfaces.tobago.context.Markup;
import org.apache.myfaces.tobago.context.ResourceManagerUtils;
import org.apache.myfaces.tobago.internal.component.AbstractUIData;
import org.apache.myfaces.tobago.internal.component.AbstractUITreeNode;
import org.apache.myfaces.tobago.renderkit.LayoutComponentRendererBase;
import org.apache.myfaces.tobago.renderkit.css.Classes;
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.util.HtmlRendererUtils;
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.List;
public class TreeIndentRenderer extends LayoutComponentRendererBase {
@Override
public void encodeBegin(FacesContext facesContext, UIComponent component) throws IOException {
final UITreeIndent indent = (UITreeIndent) component;
final AbstractUITreeNode node = ComponentUtils.findAncestor(indent, AbstractUITreeNode.class);
final AbstractUIData data = ComponentUtils.findAncestor(indent, AbstractUIData.class);
final boolean folder = node.isFolder();
final int level = node.getLevel();
final List<Boolean> junctions = node.getJunctions();
final boolean showRoot = data.isShowRoot();
final boolean showJunctions = indent.isShowJunctions();
final boolean showRootJunction = data.isShowRootJunction();
final boolean expanded = folder && data.getExpandedState().isExpanded(node.getPath());
final boolean showLines = showJunctions && data instanceof UITree; // sheet should not show lines
final boolean showIcons = showJunctions;
final TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
writer.startElement(HtmlElements.SPAN, indent);
writer.writeIdAttribute(indent.getClientId(facesContext));
HtmlRendererUtils.writeDataAttributes(facesContext, writer, indent);
encodeIndent(
facesContext, writer, node, showLines, showIcons, showRootJunction, showRoot, junctions);
encodeTreeJunction(
facesContext, writer, node, showLines, showIcons, showRootJunction, junctions, expanded, folder, level == 0);
}
@Override
public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException {
final TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
writer.endElement(HtmlElements.SPAN);
}
private void encodeIndent(
final FacesContext facesContext, final TobagoResponseWriter writer, final AbstractUITreeNode node,
final boolean showLines, final boolean showIcons, final boolean showRootJunction, final boolean showRoot,
final List<Boolean> junctions)
throws IOException {
final boolean dropFirst = !showRoot || !showRootJunction && (showLines || showIcons);
final String blank = ResourceManagerUtils.getImageWithPath(facesContext, "image/blank.gif");
final String perpendicular = ResourceManagerUtils.getImageWithPath(facesContext, "image/I.gif");
for (int i = dropFirst ? 1 : 0; i < junctions.size() - 1; i++) {
Boolean junction = junctions.get(i);
writer.startElement(HtmlElements.IMG, null);
writer.writeClassAttribute(Classes.create(node, "junction"));
writer.writeAttribute(HtmlAttributes.ALT, "", false);
if (junction && showLines) {
writer.writeAttribute("src", perpendicular, true);
} else {
writer.writeAttribute("src", blank, true);
}
writer.endElement(HtmlElements.IMG);
}
}
private void encodeTreeJunction(
final FacesContext facesContext, final TobagoResponseWriter writer, final AbstractUITreeNode node,
final boolean showLines, final boolean showIcons, final boolean showRootJunction, final List<Boolean> junctions,
final boolean expanded, final boolean folder, final boolean root)
throws IOException {
if (!showIcons || !showRootJunction && root) {
return;
}
final boolean hasNextSibling = junctions.get(junctions.size() - 1); // last element
writer.startElement(HtmlElements.IMG, null);
writer.writeClassAttribute(Classes.create(node, "toggle", Markup.NULL));
final String open;
final String close;
if (showLines) {
if (root) {
open = "Rminus.gif";
close = "Rplus.gif";
} else {
if (hasNextSibling) {
if (folder) {
open = "Tminus.gif";
close = "Tplus.gif";
} else {
open = "T.gif";
close = "T.gif";
}
} else {
if (folder) {
open = "Lminus.gif";
close = "Lplus.gif";
} else {
open = "L.gif";
close = "L.gif";
}
}
}
} else {
if (folder) {
open = "minus.gif";
close = "plus.gif";
} else {
open = "blank.gif";
close = "blank.gif";
}
}
final String srcOpen = ResourceManagerUtils.getImageWithPath(facesContext, "image/" + open);
final String srcClose = ResourceManagerUtils.getImageWithPath(facesContext, "image/" + close);
final String src = expanded ? srcOpen : srcClose;
writer.writeAttribute(HtmlAttributes.SRC, src, true);
if (folder) {
writer.writeAttribute(DataAttributes.SRC_OPEN, srcOpen, true);
writer.writeAttribute(DataAttributes.SRC_CLOSE, srcClose, true);
}
writer.writeAttribute(HtmlAttributes.ALT, "", false);
writer.endElement(HtmlElements.IMG);
}
}