/*
    * 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.context.ResourceManagerUtils;
  import org.apache.myfaces.tobago.context.UserAgent;
  import org.apache.myfaces.tobago.internal.component.AbstractUIData;
  import org.apache.myfaces.tobago.layout.Display;
  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.util.HtmlRendererUtils;
  import org.apache.myfaces.tobago.util.ComponentUtils;
  import org.apache.myfaces.tobago.util.VariableResolverUtils;
  import org.apache.myfaces.tobago.webapp.TobagoResponseWriter;
  
  import javax.faces.component.UIComponent;
  import javax.faces.context.FacesContext;
  import java.io.IOException;
  
  public class TreeMenuNodeRenderer extends TreeNodeRendererBase {
  
    @Override
    public void encodeBegin(FacesContext facesContext, UIComponent component) throws IOException {
  
      final UITreeNode node = (UITreeNode) component;
      final AbstractUIData data = ComponentUtils.findAncestor(node, AbstractUIData.class);
  
      final boolean dataRendersRowContainer = data.isRendersRowContainer();
      final boolean folder = node.isFolder();
      final String clientId = node.getClientId(facesContext);
      final boolean ie6
          = VariableResolverUtils.resolveClientProperties(facesContext).getUserAgent().equals(UserAgent.MSIE_6_0);
      final String parentId = data.getRowParentClientId();
      final boolean visible = data.isRowVisible();
  
      final TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
  
      writer.startElement(HtmlElements.DIV, null);
      writer.writeIdAttribute(clientId);
      writer.writeClassAttribute(Classes.create(node));
      HtmlRendererUtils.writeDataAttributes(facesContext, writer, node);
      if (parentId != null) {
        writer.writeAttribute(DataAttributes.TREEPARENT, parentId, false);
      }
  
      // In the case of a sheet, we need not hiding the node, because the whole TR will be hidden.
      if (!dataRendersRowContainer && !visible) {
        Style style = new Style();
        style.setDisplay(Display.NONE);
        writer.writeStyleAttribute(style);
      }
  
  
      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);
      }
    }
  
    @Override
    public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException {
      final UITreeNode node = (UITreeNode) component;
      final AbstractUIData data = ComponentUtils.findAncestor(node, AbstractUIData.class);
      final int level = node.getLevel();
      final boolean folder = node.isFolder();
      final boolean expanded = folder && data.getExpandedState().isExpanded(node.getPath()) || level == 0;
  
      final TobagoResponseWriter writer = HtmlRendererUtils.getTobagoResponseWriter(facesContext);
  
      if (folder) {
        encodeIcon(facesContext, writer, expanded, node);
      }
      writer.endElement(HtmlElements.DIV);
   }
 
   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);
   }
 
 }