tablesorter.java

eq跨平台查询工具源码 eq跨平台查询工具源码

            }
        }
        return modelToView;
    }
    
    // TableModel interface methods
    
    public int getRowCount() {
        return (tableModel == null) ? 0 : tableModel.getRowCount();
    }
    
    public int getColumnCount() {
        return (tableModel == null) ? 0 : tableModel.getColumnCount();
    }
    
    public String getColumnName(int column) {
        return tableModel.getColumnName(column);
    }
    
    public Class getColumnClass(int column) {
        return tableModel.getColumnClass(column);
    }
    
    public boolean isCellEditable(int row, int column) {
        return tableModel.isCellEditable(modelIndex(row), column);
    }
    
    public Object getValueAt(int row, int column) {
        if (row >= getRowCount() || column >= getColumnCount()) {
            return null;
        }
        return tableModel.getValueAt(modelIndex(row), column);
    }
    
    public void setValueAt(Object aValue, int row, int column) {
        tableModel.setValueAt(aValue, modelIndex(row), column);
    }
    
    // Helper classes
    
    private class Row implements Comparable {
        private int modelIndex;
        
        public Row(int index) {
            this.modelIndex = index;
        }
        
        public int compareTo(Object o) {
            int row1 = modelIndex;
            int row2 = ((Row) o).modelIndex;
            
            for (Iterator it = sortingColumns.iterator(); it.hasNext();) {
                Directive directive = (Directive) it.next();
                int column = directive.column;
                Object o1 = tableModel.getValueAt(row1, column);
                Object o2 = tableModel.getValueAt(row2, column);
                
                int comparison = 0;
                
                // Define null less than everything, except null.
                if (o1 == null && o2 == null)
                    comparison = 0;
                else if (o1 == null)
                    comparison = -1;
                else if (o2 == null)
                    comparison = 1;
                else {
                    
                    Class type = tableModel.getColumnClass(column);
                    
                    if (columnComparators.containsKey(type))
                        comparison = ((Comparator)columnComparators.get(type)).compare(o1, o2);
                    
                    else
                        comparison = compareByColumn(type, o1, o2);
                    
                    //                comparison = getComparator(column).compare(o1, o2);
                    
                }
                
                if (comparison != 0)
                    return directive.direction == DESCENDING ? -comparison : comparison;
                
            }
            
            return 0;
            
        }
        
        private int compareByColumn(Class type, Object o1, Object o2) {
            
            if (type.getSuperclass() == java.lang.Number.class) {
                Number n1 = (Number)o1;
                double d1 = n1.doubleValue();
                Number n2 = (Number)o2;
                double d2 = n2.doubleValue();
                
                if (d1 < d2)
                    return -1;
                else if (d1 > d2)
                    return 1;
                else
                    return 0;
                
            }
            
            else if (type == java.util.Date.class) {
                Date d1 = (Date)o1;
                long n1 = d1.getTime();
                Date d2 = (Date)o2;
                long n2 = d2.getTime();
                
                if (n1 < n2)
                    return -1;
                else if (n1 > n2)
                    return 1;
                else
                    return 0;
                
            }
            
            else if (type == String.class) {
                String s1 = (String)o1;
                String s2 = (String)o2;
                int result = s1.compareTo(s2);
                
                if (result < 0)
                    return -1;
                else if (result > 0)
                    return 1;
                else
                    return 0;
                
            }
            
            else if (type == Boolean.class) {
                Boolean bool1 = (Boolean)o1;
                boolean b1 = bool1.booleanValue();
                Boolean bool2 = (Boolean)o2;
                boolean b2 = bool2.booleanValue();
                
                if (b1 == b2)
                    return 0;
                else if (b1) // Define false < true
                    return 1;
                else
                    return -1;
                
            }
            
            else {
                
                try {
                    Number n1 = (Number)o1;
                    double d1 = n1.doubleValue();
                    Number n2 = (Number)o2;
                    double d2 = n2.doubleValue();
                    
                    if (d1 < d2)
                        return -1;
                    else if (d1 > d2)
                        return 1;
                    else
                        return 0;
                    
                }
                
                catch (ClassCastException cExc) {
                    Object v1 = o1;
                    String s1 = v1.toString();
                    Object v2 = o2;
                    String s2 = v2.toString();
                    int result = s1.compareTo(s2);
                    
                    if (result < 0)
                        return -1;
                    else if (result > 0)
                        return 1;
                    else
                        return 0;
                    
                }
                
            }
            
        }
        
    } // class Row
    
    private class TableModelHandler implements TableModelListener {
        public void tableChanged(TableModelEvent e) {
            
            // If we're not sorting by anything, just pass the event along.
            if (!isSorting()) {
                clearSortingState();
                fireTableChanged(e);
                return;
            }
            
            // If the table structure has changed, cancel the sorting; the
            // sorting columns may have been either moved or deleted from
            // the model.
            if (e.getFirstRow() == TableModelEvent.HEADER_ROW) {
                cancelSorting();
                fireTableChanged(e);
                return;
            }
            
            // We can map a cell event through to the view without widening
            // when the following conditions apply:
            //
            // a) all the changes are on one row (e.getFirstRow() == e.getLastRow()) and,
            // b) all the changes are in one column (column != TableModelEvent.ALL_COLUMNS) and,
            // c) we are not sorting on that column (getSortingStatus(column) == NOT_SORTED) and,
            // d) a reverse lookup will not trigger a sort (modelToView != null)
            //
            // Note: INSERT and DELETE events fail this test as they have column == ALL_COLUMNS.
            //
            // The last check, for (modelToView != null) is to see if modelToView
            // is already allocated. If we don't do this check; sorting can become
            // a performance bottleneck for applications where cells
            // change rapidly in different parts of the table. If cells
            // change alternately in the sorting column and then outside of
            // it this class can end up re-sorting on alternate cell updates -
            // which can be a performance problem for large tables. The last
            // clause avoids this problem.
            int column = e.getColumn();
            if (e.getFirstRow() == e.getLastRow()
            && column != TableModelEvent.ALL_COLUMNS
                    && getSortingStatus(column) == NOT_SORTED
                    && modelToView != null) {
                int viewIndex = getModelToView()[e.getFirstRow()];
                fireTableChanged(new TableModelEvent(TableSorter.this,
                        viewIndex, viewIndex,
                        column, e.getType()));
                return;
            }
            
            // Something has happened to the data that may have invalidated the row order.
            clearSortingState();
            fireTableDataChanged();
            return;
        }
    }
    
    private class MouseHandler extends MouseAdapter {
        
        int column, status;
        
        public void mouseClicked(MouseEvent e) {
            
            JTableHeader h = (JTableHeader)e.getSource();
            TableColumnModel columnModel = h.getColumnModel();
            int viewColumn = columnModel.getColumnIndexAtX(e.getX());
            column = columnModel.getColumn(viewColumn).getModelIndex();
            
            if (column != -1) {
                status = getSortingStatus(column);
                
                if (!e.isControlDown())
                    cancelSorting();
                
                // Cycle the sorting states through {NOT_SORTED, ASCENDING, DESCENDING} or
                // {NOT_SORTED, DESCENDING, ASCENDING} depending on whether shift is pressed.
                status = status + (e.isShiftDown() ? -1 : 1);
                status = (status + 4) % 3 - 1; // signed mod, returning {-1, 0, 1}
                
                SwingWorker worker = new SwingWorker() {
                    public Object construct() {
                        setSortingStatus(column, status);
                        return "done";
                    }
                };
                
                worker.start();
                
            }
            
        }
        
    } // class MouseHandler
    
/*
    private class SortableHeaderRenderer extends JButton
                                         implements TableCellRenderer {
 
      public SortableHeaderRenderer() {
        setMargin(btnMargin);
      }
 
      public Component getTableCellRendererComponent(JTable table,
                                                     Object value,
                                                     boolean isSelected,
                                                     boolean hasFocus,
                                                     int row,
                                                     int column) {
 
        String label = value.toString();
        setText(label);
        setToolTipText(label);
 
        setHorizontalTextPosition(SwingConstants.LEFT);
        int modelColumn = table.convertColumnIndexToModel(column);
        setIcon(getHeaderRendererIcon(modelColumn, getFont().getSize()));
 
        return this;
 
      }
 
    } // class SortableHeaderRenderer
 */
    private static class Directive {
        private int column;
        private int direction;
        
        public Directive(int column, int direction) {
            this.column = column;
            this.direction = direction;
        }
    }
}