/**
 * ===========================================
 * LibLayout : a free Java layouting library
 * ===========================================
 *
 * Project Info:  http://reporting.pentaho.org/liblayout/
 *
 * (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * ------------
 * $Id: TableRenderBox.java 6653 2008-12-02 14:53:40Z tmorgner $
 * ------------
 * (C) Copyright 2006-2007, by Pentaho Corporation.
 */
package org.jfree.layouting.renderer.model.table;

import org.jfree.layouting.input.style.keys.table.BorderCollapse;
import org.jfree.layouting.input.style.keys.table.EmptyCells;
import org.jfree.layouting.input.style.keys.table.TableLayout;
import org.jfree.layouting.input.style.keys.table.TableStyleKeys;
import org.jfree.layouting.input.style.values.CSSValue;
import org.jfree.layouting.input.style.values.CSSValuePair;
import org.jfree.layouting.layouter.context.LayoutContext;
import org.jfree.layouting.output.OutputProcessorMetaData;
import org.jfree.layouting.renderer.border.RenderLength;
import org.jfree.layouting.renderer.model.BlockRenderBox;
import org.jfree.layouting.renderer.model.BoxDefinition;
import org.jfree.layouting.renderer.model.DefaultBoxDefinitionFactory;
import org.jfree.layouting.renderer.model.RenderNode;
import org.jfree.layouting.renderer.model.table.cols.SpearateColumnModel;
import org.jfree.layouting.renderer.model.table.cols.TableColumnModel;

/**
 * A table render box contains table header, table footer and the table body.
 * The table body itself may also contain table header cells - which get
 * repeated after pagebreaks.
 * <p/>
 * Tables contain more than just rows, in fact, they are separated into three
 * sections.
 *
 * @author Thomas Morgner
 */
public class TableRenderBox extends BlockRenderBox
{
  private TableColumnModel columnModel;

  private boolean needsPruning;

  private TableLayoutInfo tableInfo;
  /**
   * This is not set to true unless the *closed* table has been validated.
   */
  private boolean structureValidated;
  private boolean predefinedColumnsValidated;

  public TableRenderBox(final BoxDefinition boxDefinition)
  {
    super(boxDefinition);

    this.columnModel = new SpearateColumnModel();
    this.tableInfo = new TableLayoutInfo();
    this.tableInfo.setBorderSpacing(RenderLength.EMPTY);
  }

  public void appyStyle(final LayoutContext layoutContext,
                        final OutputProcessorMetaData metaData)
  {
    super.appyStyle(layoutContext, metaData);
    final CSSValue emptyCellsVal = layoutContext.getValue
            (TableStyleKeys.EMPTY_CELLS);
    tableInfo.setDisplayEmptyCells(EmptyCells.SHOW.equals(emptyCellsVal));

    final CSSValue borderModel =
            layoutContext.getValue(TableStyleKeys.BORDER_COLLAPSE);
    tableInfo.setCollapsingBorderModel(BorderCollapse.COLLAPSE.equals(borderModel));

    final CSSValue layoutModel =
            layoutContext.getValue(TableStyleKeys.TABLE_LAYOUT);
    tableInfo.setAutoLayout (TableLayout.AUTO.equals(layoutModel));

    final CSSValue borderSpacingVal =
            layoutContext.getValue(TableStyleKeys.BORDER_SPACING);

    if (borderSpacingVal instanceof CSSValuePair)
    {
      final CSSValuePair borderSpacingPair = (CSSValuePair) borderSpacingVal;
      tableInfo.setRowSpacing (DefaultBoxDefinitionFactory.computeWidth
              (borderSpacingPair.getFirstValue(),
                  layoutContext, metaData, false, false));
      tableInfo.setBorderSpacing (DefaultBoxDefinitionFactory.computeWidth
              (borderSpacingPair.getSecondValue(),
                  layoutContext, metaData, false, false));
    }
    else
    {
      tableInfo.setBorderSpacing(RenderLength.EMPTY);
      tableInfo.setRowSpacing(RenderLength.EMPTY);
    }
  }


  public boolean isPredefinedColumnsValidated()
  {
    return predefinedColumnsValidated;
  }

  public void setPredefinedColumnsValidated(final boolean predefinedColumnsValidated)
  {
    this.predefinedColumnsValidated = predefinedColumnsValidated;
  }

  public boolean isStructureValidated()
  {
    return structureValidated;
  }

  public void setStructureValidated(final boolean structureValidated)
  {
    this.structureValidated = structureValidated;
  }

  public TableColumnModel getColumnModel()
  {
    return columnModel;
  }

  public void addChild(final RenderNode child)
  {
    super.addChild(child);
    needsPruning = true;
  }

  public boolean isLayoutable()
  {
    return columnModel.isIncrementalModeSupported();
  }

  public RenderLength getBorderSpacing()
  {
    return tableInfo.getBorderSpacing();
  }

  public RenderLength getRowSpacing()
  {
    return tableInfo.getRowSpacing();
  }

  public boolean isDisplayEmptyCells()
  {
    return tableInfo.isDisplayEmptyCells();
  }

  public boolean isCollapsingBorderModel()
  {
    return tableInfo.isCollapsingBorderModel();
  }

  public boolean isAutoLayout()
  {
    return tableInfo.isAutoLayout();
  }

  public Object clone()
  {
    try
    {
      final TableRenderBox box = (TableRenderBox) super.clone();
      if (box.isStructureValidated() == false)
      {
        box.columnModel = (TableColumnModel) columnModel.clone();
      }
      return box;
    }
    catch (CloneNotSupportedException e)
    {
      throw new IllegalStateException("Clone failed for some reason.");
    }
  }
}
