/*
    * 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.model;
  
  import org.apache.commons.lang.StringUtils;
  import org.apache.myfaces.tobago.event.SortActionEvent;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.faces.component.UIColumn;
  import java.io.Serializable;
  import java.util.ArrayList;
  import java.util.List;
  
  public class SheetState implements Serializable {
  
    private static final long serialVersionUID = 7765536344426661777L;
  
    private static final Logger LOG = LoggerFactory.getLogger(SheetState.class);
  
    public static final String SEPARATOR = ",";
  
    private int first = -1;
    private String sortedColumnId;
    private boolean ascending;
    private String columnWidths;
    private List<Integer> selectedRows;
    private Integer[] scrollPosition;
    private ExpandedState expandedState;
  
    public SheetState() {
      resetSelected();
    }
  
    public void resetSelected() {
      selectedRows = new ArrayList<Integer>();
    }
  
    public List<Integer> getSelectedRows() {
      return selectedRows;
    }
  
    public void setSelectedRows(List<Integer> selectedRows) {
      assert selectedRows != null;
      this.selectedRows = selectedRows;
    }
  
    public String getSortedColumnId() {
      return sortedColumnId;
    }
  
    public void setSortedColumnId(String sortedColumnId) {
      this.sortedColumnId = sortedColumnId;
    }
  
    public boolean isAscending() {
      return ascending;
    }
  
    public void setAscending(boolean ascending) {
      this.ascending = ascending;
    }
  
    public String getColumnWidths() {
      return columnWidths;
    }
  
    public void setColumnWidths(String columnWidths) {
      this.columnWidths = columnWidths;
    }
  
    public int getFirst() {
      return first;
    }
  
    public void setFirst(int first) {
      this.first = first;
    }
  
    public void updateSortState(SortActionEvent sortEvent) {
  
      UIColumn actualColumn = sortEvent.getColumn();
 
     if (actualColumn.getId().equals(sortedColumnId)) {
       ascending = !ascending;
     } else {
       ascending = true;
       sortedColumnId = actualColumn.getId();
     }
   }
 
   public Integer[] getScrollPosition() {
     return scrollPosition;
   }
 
   public void setScrollPosition(Integer[] scrollPosition) {
     this.scrollPosition = scrollPosition;
   }
 
   public ExpandedState getExpandedState() {
     if (expandedState == null) {
       expandedState = new ExpandedState(2);
     }
     return expandedState;
   }
 
   public void setExpandedState(ExpandedState expandedState) {
     this.expandedState = expandedState;
   }
 
   public static Integer[] parseScrollPosition(String value) {
     Integer[] position = null;
     if (!StringUtils.isBlank(value)) {
       int sep = value.indexOf(";");
       if (LOG.isInfoEnabled()) {
         LOG.info("value = \"" + value + "\"  sep = " + sep + "");
       }
       if (sep == -1) {
         throw new NumberFormatException(value);
       }
       int left = Integer.parseInt(value.substring(0, sep));
       int top = Integer.parseInt(value.substring(sep + 1));
       position = new Integer[2];
       position[0] = left;
       position[1] = top;
     }
     return position;
   }
 }