org.eclipse.osee.framework.ui.skynet/src/org/eclipse/osee/framework/ui/skynet/widgets/xviewer/customize/ColumnData.java

/*******************************************************************************
 * Copyright (c) 2004, 2007 Boeing.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Boeing - initial API and implementation
 *******************************************************************************/
package org.eclipse.osee.framework.ui.skynet.widgets.xviewer.customize;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.osee.framework.ui.skynet.widgets.xviewer.IXViewerFactory;
import org.eclipse.osee.framework.ui.skynet.widgets.xviewer.XViewerColumn;

/**
 * @author Donald G. Dunne
 */
public class ColumnData {

   List<XViewerColumn> columns = new ArrayList<XViewerColumn>();
   Map<String, XViewerColumn> nameToCol = new HashMap<String, XViewerColumn>();

   public List<XViewerColumn> setFromXml(String xml, IXViewerFactory xViewerFactory) {
      columns.clear();
      List<XViewerColumn> xCols = new ArrayList<XViewerColumn>();
      Matcher columnMatch =
            Pattern.compile("<" + XViewerColumn.XTREECOLUMN_TAG + ">(.*?)</" + XViewerColumn.XTREECOLUMN_TAG + ">").matcher(
                  xml);
      while (columnMatch.find()) {
         String colXml = columnMatch.group(1);
         String colName = XViewerColumn.getSystemName(colXml);
         XViewerColumn xCol = xViewerFactory.getDefaultXViewerColumn(colName);
         if (xCol == null)
            xCol = new XViewerColumn(null, colXml);
         else
            xCol.setFromXml(colXml);
         xCols.add(xCol);
      }
      int x = 0;
      for (XViewerColumn xCol : XViewerCustomize.getColumnOrder(xCols)) {
         xCol.setColumnNum(x++);
         columns.add(xCol);
         nameToCol.put(xCol.getSystemName(), xCol);
      }
      return columns;
   }

   public XViewerColumn getXColumn(String name) {
      return nameToCol.get(name);
   }

   /**
    * Because a stored set of columns may not have new columns that were added later, this method is called to add such
    * columns to the set.
    * 
    * @param colData
    */
   public void addMissingColumns(ColumnData colData) {
      for (XViewerColumn newXCol : colData.columns)
         if (!columns.contains(newXCol)) columns.add(newXCol);
   }

   public String getXml() {
      StringBuffer sb = new StringBuffer();
      for (XViewerColumn xCol : columns) {
         sb.append(xCol.toXml());
      }
      return sb.toString();
   }

   /**
    * @return the columns
    */
   public List<XViewerColumn> getColumns() {
      return columns;
   }

   /**
    * @param columns the columns to set
    */
   public void setColumns(List<XViewerColumn> columns) {
      this.columns = columns;
   }

}