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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.poi.hssf.view;

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
import javax.swing.table.*;

import org.apache.poi.hssf.usermodel.*;

/**
 * This class presents the sheets to the user.
 *
 *
 * @author Andrew C. Oliver
 * @author Jason Height
 */
public class SViewerPanel extends JPanel {
  /** This field is the magic number to convert from a Character width to a
   *  java pixel width.
   *
   * When the "normal" font size in a workbook changes, this effects all
   * of the heights and widths. Unfortunately there is no way to retrieve this
   * information, hence the MAGIC number.
   *
   * This number may only work for the normal style font size of Arial size 10.
   *
   */
  private static final int magicCharFactor = 7;
  /** Reference to the wookbook that is being displayed*/
  /* package */ HSSFWorkbook wb;
  /** Reference to the tabs component*/
  /* package */ JTabbedPane sheetPane;
  /** Reference to the cell renderer that is used to render all cells*/
  private SVTableCellRenderer cellRenderer;
  /** Reference to the cell editor that is used to edit all cells.
   *  Only constructed if editing is allowed
   */
  private SVTableCellEditor cellEditor;
  /** Flag indicating if editing is allowed. Otherwise the viewer is in
   *  view only mode.
   */
  private boolean allowEdits;

  /**Construct the representation of the workbook*/
  public SViewerPanel(HSSFWorkbook wb, boolean allowEdits) {
    this.wb = wb;
    this.allowEdits = allowEdits;

    initialiseGui();
  }

  private void initialiseGui() {
    cellRenderer = new SVTableCellRenderer(this.wb);
    if (allowEdits)
      cellEditor = new SVTableCellEditor(this.wb);

    //Initialise the Panel
    sheetPane = new JTabbedPane(JTabbedPane.BOTTOM);

    if (allowEdits)
      sheetPane.addMouseListener(createTabListener());
    int sheetCount = wb.getNumberOfSheets();
    for (int i=0; i