javax.swing.table.TableColumn#getCellRenderer ( )源码实例Demo

/**
 * Installs alignment decorators in the table column at {@code colViewIndex}.
 *
 * @param table a table.
 * @param colViewIndex the index of the column in the table <i>view</i>.
 * @param alignment one of the following constants:
 *        <ul>
 *        <li>{@link SwingConstants#LEFT}</li>
 *        <li>{@link SwingConstants#CENTER} (the default for image-only labels)</li>
 *        <li>{@link SwingConstants#RIGHT}</li>
 *        <li>{@link SwingConstants#LEADING} (the default for text-only labels)</li>
 *        <li>{@link SwingConstants#TRAILING}</li>
 *        </ul>
 */
public static void installInOneColumn(JTable table, int colViewIndex, int alignment) {
  TableColumn tableColumn = table.getColumnModel().getColumn(colViewIndex);

  TableCellRenderer headerRenderer = tableColumn.getHeaderRenderer();
  if (headerRenderer == null) {
    headerRenderer = table.getTableHeader().getDefaultRenderer();
  }
  if (!(headerRenderer instanceof RendererAlignmentDecorator)) { // Don't install a redundant decorator.
    tableColumn.setHeaderRenderer(new RendererAlignmentDecorator(headerRenderer, alignment));
  }

  TableCellRenderer cellRenderer = tableColumn.getCellRenderer();
  if (cellRenderer == null) {
    cellRenderer = table.getDefaultRenderer(table.getColumnClass(colViewIndex));
  }
  if (!(cellRenderer instanceof RendererAlignmentDecorator)) { // Don't install a redundant decorator.
    tableColumn.setCellRenderer(new RendererAlignmentDecorator(cellRenderer, alignment));
  }
}
 

private TableCellRenderer getCellRenderer(JTable table, int row, int column) {

		// 
		// Step 1: See if we can use our custom rendering lookup        
		// 
		if (table instanceof GTable) {
			GTable gTable = (GTable) table;
			return gTable.getCellRendererOverride(row, column);
		}

		// 
		// Step 2: Locate normal JTable-style rendering   
		//
		TableColumn tableColumn = table.getColumnModel().getColumn(column);
		TableCellRenderer renderer = tableColumn.getCellRenderer();
		if (renderer == null) {
			renderer = table.getDefaultRenderer(table.getColumnClass(column));
		}
		return renderer;
	}
 

/** Always returns the default renderer for Object.class for the tree column */
@Override
public TableCellRenderer getCellRenderer(int row, int column) {
    int c = convertColumnIndexToModel(column);
    TableCellRenderer result;
    if (c == 0) {
        TableColumn tableColumn = getColumnModel().getColumn(column);
        TableCellRenderer renderer = tableColumn.getCellRenderer();
        if (renderer == null) {
            result = getDefaultRenderer(Object.class);
        } else {
            result = renderer;
        }
    } else {
        result = super.getCellRenderer(row, column);
    }
    return result;
}
 

@Override
public TableCellRenderer getCellRenderer(int row, int column) {
	if ( column == 0 ) {
		return super.getCellRenderer(row, column);
	}
   TableColumn tableColumn = getColumnModel().getColumn(column);
   TableCellRenderer renderer = tableColumn.getCellRenderer();
   if (renderer == null) {
     Object value = this.getValueAt(row, column);
     if ( value != null ) {
     	renderer = getDefaultRenderer(value.getClass());
     } else {
     	renderer = getDefaultRenderer(getColumnClass(column));
     }
   }
   return renderer;
}
 

public void copyValues(TableColumn base) {
	modelIndex = base.getModelIndex();
	identifier = base.getIdentifier();
	width = base.getWidth();
	minWidth = base.getMinWidth();
	setPreferredWidth(base.getPreferredWidth());
	maxWidth = base.getMaxWidth();
	headerRenderer = base.getHeaderRenderer();
	headerValue = base.getHeaderValue();
	cellRenderer = base.getCellRenderer();
	cellEditor = base.getCellEditor();
	isResizable = base.getResizable();
}
 

/**
 * Look through all columns and get the renderer. If it is also a TextAreaRenderer, we look at
 * the maximum height in its hash table for this row.
 */
private static int findTotalMaximumRowSize(final JTable table, final int row) {
  int maximumHeight = 0;
  final Enumeration<?> columns = table.getColumnModel().getColumns();
  while (columns.hasMoreElements()) {
    final TableColumn tc = (TableColumn) columns.nextElement();
    final TableCellRenderer cellRenderer = tc.getCellRenderer();
    if (cellRenderer instanceof EditorPaneTableCellRenderer) {
      final EditorPaneTableCellRenderer tar = (EditorPaneTableCellRenderer) cellRenderer;
      maximumHeight = Math.max(maximumHeight, tar.findMaximumRowSize(table, row));
    }
  }
  return maximumHeight;
}
 

public TableCellRenderer getCellRenderer( final int row, final int viewColumn ) {
  final TableModel tableModel = getModel();
  if ( tableModel instanceof PropertyTableModel ) {
    final PropertyTableModel model = (PropertyTableModel) getModel();
    final int column = convertColumnIndexToModel( viewColumn );

    final Class columnClass = model.getClassForCell( row, column );
    if ( columnClass.isArray() ) {
      return arrayCellRenderer;
    }

    final PropertyEditor propertyEditor = model.getEditorForCell( row, column );
    if ( propertyEditor != null ) {
      propertyEditorCellRenderer.setPropertyEditor( propertyEditor );
      return propertyEditorCellRenderer;
    }

    final TableColumn tableColumn = getColumnModel().getColumn( column );
    final TableCellRenderer renderer = tableColumn.getCellRenderer();
    if ( renderer != null ) {
      return renderer;
    }

    final TableCellRenderer defaultRenderer = getDefaultRenderer( columnClass );
    if ( defaultRenderer != null ) {
      return defaultRenderer;
    }

    if ( logger.isTraceEnabled() ) {
      logger.trace( "No renderer for column class " + columnClass ); // NON-NLS
    }
    return getDefaultRenderer( Object.class );
  }

  return super.getCellRenderer( row, viewColumn );
}
 

public TableCellRenderer getCellRenderer( final int row, final int viewColumn ) {
  final int column = convertColumnIndexToModel( viewColumn );
  final Object value = getModel().getValueAt( row, column );
  if ( value instanceof GroupingHeader ) {
    return groupingCellRenderer;
  }

  final ElementMetaDataTableModel model = (ElementMetaDataTableModel) getModel();
  final Class columnClass = model.getClassForCell( row, column );
  if ( columnClass.isArray() ) {
    return arrayCellRenderer;
  }

  final PropertyEditor propertyEditor = model.getEditorForCell( row, column );
  if ( propertyEditor != null ) {
    propertyEditorCellRenderer.setPropertyEditor( propertyEditor );
    return propertyEditorCellRenderer;
  }
  final TableColumn tableColumn = getColumnModel().getColumn( column );
  final TableCellRenderer renderer = tableColumn.getCellRenderer();
  if ( renderer != null ) {
    return renderer;
  }


  final TableCellRenderer defaultRenderer = getDefaultRenderer( columnClass );
  if ( defaultRenderer != null ) {
    return defaultRenderer;
  }

  if ( logger.isTraceEnabled() ) {
    logger.trace( "No renderer for column class " + columnClass ); // NON-NLS
  }
  return getDefaultRenderer( Object.class );
}
 

public void copyValues(TableColumn base) {    
	modelIndex     = base.getModelIndex();
	identifier     = base.getIdentifier();
	width          = base.getWidth();
	minWidth       = base.getMinWidth();
	setPreferredWidth(base.getPreferredWidth());
	maxWidth       = base.getMaxWidth();
	headerRenderer = base.getHeaderRenderer();
	headerValue    = base.getHeaderValue();
	cellRenderer   = base.getCellRenderer();
	cellEditor     = base.getCellEditor();
	isResizable    = base.getResizable();
}
 

private static void setRenderer(TableColumn column) {
    if (!(column.getCellRenderer() instanceof TableClassNameRenderer)) {
        column.setCellRenderer(new TableClassNameRenderer());
    }
}
 

private static void setRenderer(TableColumn column) {
    if (!(column.getCellRenderer() instanceof TableClassNameRenderer)) {
        column.setCellRenderer(new TableClassNameRenderer());
    }
}
 

public TableCellRenderer getCellRenderer(int row, int column) {
   TableColumn tableColumn = getColumnModel().getColumn(column);
   TableCellRenderer renderer = tableColumn.getCellRenderer();
   if (renderer == null) renderer = getDefaultRenderer(model.getCellClass(adapter.nodeForRow(row), convertColumnIndexToModel(column)));
   return renderer;
}