jtable.java

linux下建立JAVA虚拟机的源码KAFFE

  
  /**
   * Create the default table column model that is used if the user-defined
   * column model is not provided. The default method creates
   * {@link DefaultTableColumnModel}.
   * 
   * @return the created table column model.
   */
  protected TableColumnModel createDefaultColumnModel()
  {
    return new DefaultTableColumnModel();
  }

  /**
   * Create the default table data model that is used if the user-defined
   * data model is not provided. The default method creates
   * {@link DefaultTableModel}.
   * 
   * @return the created table data model.
   */
  protected TableModel createDefaultDataModel()
  {
    return new DefaultTableModel();
  }

  /**
   * Create the default table selection model that is used if the user-defined
   * selection model is not provided. The default method creates
   * {@link DefaultListSelectionModel}.
   * 
   * @return the created table data model.
   */
  protected ListSelectionModel createDefaultSelectionModel()
  {
    return new DefaultListSelectionModel();
  }
  
  /**
   * Create the default table header, if the user - defined table header is not
   * provided.
   * 
   * @return the default table header.
   */
  protected JTableHeader createDefaultTableHeader()
  {
    return new JTableHeader(columnModel);
  }
  
  /**
   * Invoked when the column is added. Revalidates and repains the table.
   */
  public void columnAdded (TableColumnModelEvent event)
  {
    revalidate();
    repaint();
  }

  /**
   * Invoked when the column margin is changed. 
   * Revalidates and repains the table.
   */
  public void columnMarginChanged (ChangeEvent event)
  {
    revalidate();
    repaint();
  }

  /**
   * Invoked when the column is moved. Revalidates and repains the table.
   */
  public void columnMoved (TableColumnModelEvent event)
  {
    revalidate();
    repaint();
  }

  /**
   * Invoked when the column is removed. Revalidates and repains the table.
   */
  public void columnRemoved (TableColumnModelEvent event)
  {
    revalidate();
    repaint();
  }
  
  /**
   * Invoked when the the column selection changes.
   */
  public void columnSelectionChanged (ListSelectionEvent event)
  {
    repaint();
  }
  
  /**
   * Invoked when the editing is cancelled.
   */
  public void editingCanceled (ChangeEvent event)
  {
    if (editorComp!=null)
      {
        remove(editorComp);
        repaint(editorComp.getBounds());        
        editorComp = null;
      }
  }
  
  /**
   * Finish the current editing session and update the table with the
   * new value by calling {@link #setValueAt}.
   * 
   * @param event the change event
   */
  public void editingStopped (ChangeEvent event)
  {
    if (editorComp!=null)
      {
        remove(editorComp);        
        setValueAt(cellEditor.getCellEditorValue(), editingRow, editingColumn);            
        repaint(editorComp.getBounds());
        editorComp = null;
      }
    requestFocusInWindow();
  }

  /**
   * Invoked when the table changes.
   * <code>null</code> means everything changed.
   */
  public void tableChanged (TableModelEvent event)
  {
    // update the column model from the table model if the structure has
    // changed and the flag autoCreateColumnsFromModel is set
    if ((event == null || (event.getFirstRow() == TableModelEvent.HEADER_ROW))
	&& autoCreateColumnsFromModel)
      createDefaultColumnsFromModel();

    // If the structure changes, we need to revalidate, since that might
    // affect the size parameters of the JTable. Otherwise we only need
    // to perform a repaint to update the view.
    if (event == null || event.getType() == TableModelEvent.INSERT)
      revalidate();
    if (event == null || event.getType() == TableModelEvent.DELETE)
      {
        if (dataModel.getRowCount() == 0)
          clearSelection();
        revalidate();
      }
    repaint();
  }

  /**
   * Invoked when another table row is selected.
   */
  public void valueChanged (ListSelectionEvent event)
  {
    repaint();
  }

 /**
   * Returns index of the column that contains specified point 
   * or -1 if this table doesn't contain this point.
   *
   * @param point point to identify the column
   * @return index of the column that contains specified point or 
   * -1 if this table doesn't contain this point.
   */
  public int columnAtPoint(Point point)
  {
    int ncols = getColumnCount();
    Dimension gap = getIntercellSpacing();
    TableColumnModel cols = getColumnModel();
    int x = point.x;

    for (int i = 0; i < ncols; ++i)
      {
        int width = cols.getColumn(i).getWidth()
                    + (gap == null ? 0 : gap.width);
        if (0 <= x && x < width)
          return i;
        x -= width;
      }
    return -1;
  }

  /**
   * Returns index of the row that contains specified point or -1 if this table
   * doesn't contain this point.
   * 
   * @param point point to identify the row
   * @return index of the row that contains specified point or -1 if this table
   *         doesn't contain this point.
   */
  public int rowAtPoint(Point point)
  {
    if (point != null)
      {
        int nrows = getRowCount();
        int height = getRowHeight() + getRowMargin();
        int y = point.y;

        int r = y / height;
        if (r < 0 || r >= nrows)
          return -1;
        else
          return r;
      }
    else
      return -1;
  }

  /** 
   * Calculate the visible rectangle for a particular row and column. The
   * row and column are specified in visual terms; the column may not match
   * the {@link #dataModel} column.
   *
   * @param row the visible row to get the cell rectangle of
   *
   * @param column the visible column to get the cell rectangle of, which may
   * differ from the {@link #dataModel} column
   *
   * @param includeSpacing whether or not to include the cell margins in the
   * resulting cell. If <code>false</code>, the result will only contain the
   * inner area of the target cell, not including its margins.
   *
   * @return a rectangle enclosing the specified cell
   */
  public Rectangle getCellRect(int row,
                               int column,
                               boolean includeSpacing)
  {
    // moveToCellBeingEdited expects the cached value and clones it.
    // If the caching would be removed later, uplate moveToCellBeingEdited
    // as well.
    int height = getRowHeight(row);
    int width = columnModel.getColumn(column).getWidth();
    int x_gap = columnModel.getColumnMargin();
    int y_gap = rowMargin;

    column = Math.max(0, Math.min(column, getColumnCount() - 1));
    row = Math.max(0, Math.min(row, getRowCount() - 1));

    int x = 0;
    int y = (height + y_gap) * row;

    for (int i = 0; i < column; ++i)
      x += columnModel.getColumn(i).getWidth();

    if (includeSpacing)
      rectCache.setBounds(x, y, width, height +y_gap);
    else
      rectCache.setBounds(x, y, width - x_gap, height);
    return rectCache;
  }

  public void clearSelection()
  {
    selectionModel.clearSelection();
    getColumnModel().getSelectionModel().clearSelection();
  }

  /**
   * Get the value of the selectedRow property by delegation to
   * the {@link ListSelectionModel#getMinSelectionIndex} method of the
   * {@link #selectionModel} field.
   *
   * @return The current value of the selectedRow property
   */
  public int getSelectedRow ()
  {    
    return selectionModel.getMinSelectionIndex();
  }
  
  /**
   * Get the value of the {@link #selectionModel} property.
   *
   * @return The current value of the property
   */
  public ListSelectionModel getSelectionModel()
  {
    //Neither Sun nor IBM returns null if rowSelection not allowed
    return selectionModel;
  }
  
  public int getScrollableBlockIncrement(Rectangle visibleRect, int orientation, int direction)
  {
    if (orientation == SwingConstants.VERTICAL)
      return visibleRect.height * direction;
    else
      return visibleRect.width * direction;
  }

  /**
   * Get the value of the <code>scrollableTracksViewportHeight</code> property.
   *
   * @return The constant value <code>false</code>
   */
  public boolean getScrollableTracksViewportHeight()
  {
    return false;
  }
  
  /**
   * Get the value of the <code>scrollableTracksViewportWidth</code> property.
   *
   * @return <code>true</code> unless the {@link #autoResizeMode} property is
   * <code>AUTO_RESIZE_OFF</code>
   */
  public boolean getScrollableTracksViewportWidth()
  {
    if (autoResizeMode == AUTO_RESIZE_OFF)
      return false;
    else
      return true;
  }
  
  /**
   * Return the preferred scrolling amount (in pixels) for the given scrolling
   * direction and orientation. This method handles a partially exposed row by
   * returning the distance required to completely expose the item. When
   * scrolling the top item is completely exposed.
   * 
   * @param visibleRect the currently visible part of the component.
   * @param orientation the scrolling orientation
   * @param direction the scrolling direction (negative - up, positive -down).
   *          The values greater than one means that more mouse wheel or similar
   *          events were generated, and hence it is better to scroll the longer
   *          distance.
   * @author Audrius Meskauskas ([e-mail])
   */
  public int getScrollableUnitIncrement(Rectangle visibleRect, int orientation,
                                        int direction)
  {
    int h = (rowHeight + rowMargin);
    int delta = h * direction;

    // Round so that the top would start from the row boundary
    if (orientation == SwingConstants.VERTICAL)
      {
        // Completely expose the top row
        int near = ((visibleRect.y + delta + h / 2) / h) * h;
        int diff = visibleRect.y + delta - near;
        delta -= diff;
      }
    return delta;
    // TODO when scrollng horizontally, scroll into the column boundary.
  }

  /**
   * Get the cell editor, suitable for editing the given cell. The default
   * method requests the editor from the column model. If the column model does
   * not provide the editor, the call is forwarded to the
   * {@link #getDefaultEditor(Class)} with the parameter, obtained from
   * {@link TableModel#getColumnClass(int)}.
   * 
   * @param row the cell row
   * @param column the cell column
   * @return the editor to edit that cell
   */
  public TableCellEditor getCellEditor(int row, int column)
  {
    TableCellEditor editor = columnModel.getColumn(column).getCellEditor();

    if (editor == null)
      {
        int mcolumn = convertColumnIndexToModel(column);
        editor = getDefaultEditor(dataModel.getColumnClass(mcolumn));
      }

    return editor;
  }
  
  /**
   * Get the default editor for editing values of the given type
   * (String, Boolean and so on).
   * 
   * @param columnClass the class of the value that will be edited.
   * 
   * @return the editor, suitable for editing this data type
   */
  public TableCellEditor getDefaultEditor(Class columnClass)
  {
    if (defaultEditorsByColumnClass.containsKey(columnClass))
      return (TableCellEditor) defaultEditorsByColumnClass.get(columnClass);
    else
      {
        JTextField t = new TableTextField();        
        TableCellEditor r = new DefaultCellEditor(t);
        defaultEditorsByColumnClass.put(columnClass, r);
        return r;
      }
  }
  
  /**
   * Get the cell renderer for rendering the given cell.
   * 
   * @param row the cell row
   * @param column the cell column
   * @return the cell renderer to render that cell.
   */
  public TableCellRenderer getCellRenderer(int row, int column)
  {
    TableCellRenderer renderer = columnModel.getColumn(column).getCellRenderer();
    if (renderer == null)
      {
        int mcolumn = convertColumnIndexToModel(column);
        renderer = getDefaultRenderer(dataModel.getColumnClass(mcolumn));
      }
    return renderer;
  }
  
  /**
   * Set default renderer for rendering the given data type.
   * 
   * @param columnClass the data type (String, Boolean and so on) that must be
   *          rendered.
   * @param rend the renderer that will rend this data type
   */
  public void setDefaultRenderer(Class columnClass, TableCellRenderer rend)
  {
    defaultRenderersByColumnClass.put(columnClass, rend);
  }
  
  /**
   * Get the default renderer for rendering the given data type.
   * 
   * @param columnClass the data that must be rendered
   * 
   * @return the appropriate defauld renderer for rendering that data type.
   */
  public TableCellRenderer getDefaultRenderer(Class columnClass)
  {
    if (defaultRenderersByColumnClass.containsKey(columnClass))
      return (TableCellRenderer) defaultRenderersByColumnClass.get(columnClass);
    else
      {
        TableCellRenderer r = new DefaultTableCellRenderer();
        defaultRenderersByColumnClass.put(columnClass, r);
        return r;
      }
  }
  
  /**
   * Convert the table m