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Private implementation of the Apache MyFaces Trinidad project
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/*
 *  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.trinidadinternal.renderkit.html;

import java.io.IOException;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;

import org.apache.myfaces.trinidad.bean.FacesBean;
import org.apache.myfaces.trinidad.bean.PropertyKey;
import org.apache.myfaces.trinidad.component.html.HtmlTableLayout;
import org.apache.myfaces.trinidad.context.RenderingContext;
import org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.OutputUtils;
import org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.XhtmlRenderer;


public class TableLayoutRenderer extends XhtmlRenderer
{
  public TableLayoutRenderer()
  {
    super(HtmlTableLayout.TYPE);
  }

  @Override
  protected void findTypeConstants(
    FacesBean.Type type)
  {
    super.findTypeConstants(type);
    _widthKey = type.findKey("width");
    _halignKey = type.findKey("halign");
    _cellSpacingKey = type.findKey("cellSpacing");
    _cellPaddingKey = type.findKey("cellPadding");
    _borderWidthKey = type.findKey("borderWidth");
    _summaryKey = type.findKey("summary");
  }

  @Override
  public boolean getRendersChildren()
  {
    return true;
  }

  @Override
  protected void encodeAll(
    FacesContext     context,
    RenderingContext rc,
    UIComponent      component,
    FacesBean        bean
    ) throws IOException
  {
    ResponseWriter rw = context.getResponseWriter();
    rw.startElement("table", component);
    renderId(context, component);
    renderAllAttributes(context, rc, component, bean);
    renderHAlign(context, rc, getHalign(component, bean));
    // TODO: if TABLES_CAP_ADVANCED and TABLES_CAP_ADVANCED_ATTRS
    // are both false, don't render cell padding, cell spacing, or border

    // Normally, you would think tableLayout would be a layout table. But this component also allows
    // the assignment of a summary, which is usually only present on a data table (and is set to ""
    // for a layout table). So, based on whether there is a summary attribute or not, we'll render as
    // either a data or layout table.
    Object summary = getSummary(component, bean);
    if (summary.equals(""))
    {
      OutputUtils.renderLayoutTableAttributes(context, rc, getCellPadding(component, bean),
        getCellSpacing(component, bean), getBorderWidth(component, bean),
        getWidth(component, bean));
    }
    else
    {
      OutputUtils.renderDataTableAttributes(context, rc, getCellPadding(component, bean),
        getCellSpacing(component, bean), getBorderWidth(component, bean),
        getWidth(component, bean), getSummary(component, bean));
    }

    encodeAllChildren(context, component);

    rw.endElement("table");
  }

  protected Object getWidth(
    UIComponent component,
    FacesBean   bean)
  {
    return bean.getProperty(_widthKey);
  }

  protected Object getHalign(
    UIComponent component,
    FacesBean   bean)
  {
    return bean.getProperty(_halignKey);
  }

  protected Object getCellSpacing(
    UIComponent component,
    FacesBean   bean)
  {
    Object o = bean.getProperty(_cellSpacingKey);
    if (o == null)
      o = 0;
    return o;
  }

  protected Object getCellPadding(
    UIComponent component,
    FacesBean   bean)
  {
    Object o = bean.getProperty(_cellPaddingKey);
    if (o == null)
      o = 0;
    return o;
  }

  protected Object getBorderWidth(
    UIComponent component,
    FacesBean   bean)
  {
    Object o = bean.getProperty(_borderWidthKey);
    if (o == null)
      o = 0;
    return o;
  }

  protected Object getSummary(
    UIComponent component,
    FacesBean   bean)
  {
    Object o = bean.getProperty(_summaryKey);
    // Because table layout is for layout, default to an empty
    // string for summary
    if (o == null)
      o = "";
    return o;
  }

  private PropertyKey _widthKey;
  private PropertyKey _halignKey;
  private PropertyKey _cellSpacingKey;
  private PropertyKey _cellPaddingKey;
  private PropertyKey _borderWidthKey;
  private PropertyKey _summaryKey;
}