/*
    * 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.log4j.chainsaw;
  
  import org.apache.log4j.chainsaw.helper.SwingHelper;
  
  import javax.swing.JTable;
  import javax.swing.table.JTableHeader;
  import javax.swing.table.TableColumnModel;
  import java.awt.Color;
  import java.awt.event.InputEvent;
  import java.awt.event.MouseEvent;
  import java.awt.event.MouseListener;
  
  
  /**
   * A Sortable JTable implementation that allows a user to click on a
   * specific Column and have the row information sorted by that column.
   *
   * @author Claude Duguay
   * @author Scott Deboy <sdeboy@apache.org>
   */
  public class JSortTable extends JTable implements MouseListener {
      protected int sortedColumnIndex = -1;
      protected boolean sortedColumnAscending = true;
      private String sortedColumn;
      private int lastSelectedColumn = -1;
  
      public JSortTable(SortTableModel model) {
          super(model);
          initSortHeader();
      }
  
      public void changeSelection(int rowIndex, int columnIndex, boolean toggle, boolean extend) {
          //selection of the msg field causes rendering to flash...skip over it
          int colToSelect = columnIndex;
          //CHAINSAW columns are 1-based indexes
          if (columnIndex + 1 == ChainsawColumns.INDEX_MESSAGE_COL_NAME) {
              colToSelect = lastSelectedColumn < columnIndex ? columnIndex + 1 : columnIndex - 1;
              super.changeSelection(rowIndex, colToSelect, toggle, extend);
          } else {
              super.changeSelection(rowIndex, columnIndex, toggle, extend);
          }
          lastSelectedColumn = colToSelect;
      }
  
      protected void initSortHeader() {
          JTableHeader header = getTableHeader();
          header.setBackground(Color.WHITE);
          header.setDefaultRenderer(new SortHeaderRenderer());
          header.addMouseListener(this);
      }
  
      public int getSortedColumnIndex() {
          return sortedColumnIndex;
      }
  
      public void updateSortedColumn() {
          if (sortedColumn != null) {
              try {
                  sortedColumnIndex = columnModel.getColumnIndex(sortedColumn);
                  getTableHeader().resizeAndRepaint();
              } catch (IllegalArgumentException ie) {//nothing...column is not in the model
                  setSortedColumnIndex(-1);
              }
          }
      }
  
      public void setSortedColumnIndex(int index) {
          sortedColumnIndex = index;
          if (sortedColumnIndex > -1) {
              SortTableModel model = (SortTableModel) getModel();
              model.sortColumn(sortedColumnIndex, sortedColumnAscending);
          }
          getTableHeader().resizeAndRepaint();
      }
  
      //Allow synchronous updates if already on the EDT
      private void scrollTo(final int row, final int col) {
          SwingHelper.invokeOnEDT(() -> {
              final int currentRow = getSelectedRow();
              if ((row > -1) && (row < getRowCount())) {
                  try {
                      //get the requested row off of the bottom and top of the screen by making the 5 rows around the requested row visible
                     //if new past current row, scroll to display the 20th row past new selected row
                     scrollRectToVisible(getCellRect(row, col, true));
                     if (row > currentRow) {
                         scrollRectToVisible(getCellRect(row + 5, col, true));
                     }
                     if (row < currentRow) {
                         scrollRectToVisible(getCellRect(row - 5, col, true));
                     }
                     scrollRectToVisible(getCellRect(row, col, true));
                     setRowSelectionInterval(row, row);
                 } catch (IllegalArgumentException iae) {
                     //ignore..out of bounds
                 }
             }
         });
     }
 
     public void scrollToRow(int row) {
         scrollTo(row, columnAtPoint(getVisibleRect().getLocation()));
     }
 
     public boolean isSortedColumnAscending() {
         return sortedColumnAscending;
     }
 
     public void mouseClicked(MouseEvent event) {
 
         if (event.getClickCount() < 2 || event.isPopupTrigger()) {
             return;
         } else if (event.getClickCount() > 1 && ((event.getModifiers() & InputEvent.BUTTON2_MASK) > 0)) {
             return;
         }
 
         TableColumnModel colModel = getColumnModel();
         int index = colModel.getColumnIndexAtX(event.getX());
         int modelIndex = colModel.getColumn(index).getModelIndex();
         SortTableModel model = (SortTableModel) getModel();
 
         if (model.isSortable(modelIndex)) {
             // toggle ascension, if already sorted
             if (sortedColumnIndex == index) {
                 sortedColumnAscending = !sortedColumnAscending;
             }
 
             sortedColumnIndex = index;
             sortedColumn = colModel.getColumn(index).getHeaderValue().toString();
             model.sortColumn(modelIndex, sortedColumnAscending);
             getTableHeader().resizeAndRepaint();
         }
     }
 
     public void mousePressed(MouseEvent event) {
     }
 
     public void mouseReleased(MouseEvent event) {
     }
 
     public void mouseEntered(MouseEvent event) {
     }
 
     public void mouseExited(MouseEvent event) {
     }
 }