Class StarJTable

All Implemented Interfaces:
ImageObserver, MenuContainer, Serializable, EventListener, Accessible, CellEditorListener, ListSelectionListener, RowSorterListener, TableColumnModelListener, TableModelListener, Scrollable

public class StarJTable extends JTable
Extends the JTable for use with StarTable objects. This convenience class adapts a JTable and sets its components appropriately for viewing a StarTable. The main jobs it does are to set its model to a suitable StarTableModel and make sure the cell renderers are set up suitably. It also provides configureColumnWidths(int, int) and related methods which sets the column widths according to the contents of the first few rows of the table.
Author:
Mark Taylor (Starlink)
See Also:
  • Constructor Details

    • StarJTable

      public StarJTable(boolean rowHeader)
      Constructs a new StarJTable, optionally with a dummy first column displaying the row number.
      Parameters:
      rowHeader - whether column 0 should contain row indices
    • StarJTable

      public StarJTable(StarTable startable, boolean rowHeader)
      Construsts a new StarJTable to display a given StarTable, optionally with a dummy first column displaying the row number.
      Parameters:
      startable - the StarTable to display
      rowHeader - whether column 0 should contain row indices
      Throws:
      IllegalArgumentException - if startable.isRandom returns false
      See Also:
  • Method Details

    • hasRowHeader

      public boolean hasRowHeader()
      Indicates whether the first column of this table is a dummy column displaying the row index.
      Returns:
      true iff column 0 displays row index
    • setStarTable

      public void setStarTable(StarTable startable, boolean rowHeader)
      Sets this StarJTable up to display a given StarTable object, optionally with a dummy first column displaying the row number. This table's model will be set to a StarTableModel, and the colum model will be set to one of which all the columns are StarTableColumns.
      Parameters:
      startable - the StarTable to display
      rowHeader - whether column 0 should contain row indices
      Throws:
      IllegalArgumentException - if startable.isRandom returns false
      See Also:
    • getStarTable

      public StarTable getStarTable()
      Return a reference to the StarTable being used.
      Returns:
      reference to the StarTable, null if none has been set.
    • configureColumnWidths

      public void configureColumnWidths(int maxpix, int nrows)
      Sets the width of each column heuristically from the contents of the cells headers and cells. Should be called after any default renderers have been set.
      Parameters:
      maxpix - the maximum column width allowed (pixels)
      nrows - the number of rows of the tables to survey for working out column widths. If a number greater than the number of rows in the table is given, all rows will be surveyed
    • configureColumnWidths

      public static void configureColumnWidths(JTable table, int maxpix, int rowSample)
      Utility method provided to set the widths of the columns of a JTable so that they match the widths of their contents. A heuristic method is used; the widths of the headers and of the first few rows is got, and the width set to this value. This method uses the cell renderers and table contents currently in force, so should be called after internal configuration.
      Parameters:
      table - the JTable whose widths are to be set
      maxpix - the maximum column width allowed (pixels)
      rowSample - the number of rows of the tables to survey for working out column widths. If a number greater than the number of rows in the table is given, all rows will be surveyed
    • configureDefaultRenderers

      public static void configureDefaultRenderers(JTable jtable)
      Sets up numeric cell renderers for the columns of a JTable.
      Parameters:
      jtable - table to configure; does not have to be a StarJTable
    • configureColumnWidth

      public static void configureColumnWidth(JTable table, int maxpix, int rowSample, int icol)
      Sets the width of one column to match the width of its contents. A heuristic * method is used; the widths of the headers and of the first few rows is got, and the width set to this value. This method uses the cell renderers and table contents currently in force, so should be called after internal configuration.
      Parameters:
      table - the JTable whose widths are to be set
      maxpix - the maximum column width allowed (pixels)
      rowSample - the number of rows of the tables to survey for working out column widths. If a number greater than the number of rows in the table is given, all rows will be surveyed
      icol - the index of the column to be configured
    • alignHeadersLeft

      public static void alignHeadersLeft(JTable jtable)
      Utility method that tries to arrange for the column headers to be left-aligned rather than, as seems to be the default, center-aligned.
      Parameters:
      jtable - table to affect
    • getCellWidth

      public static int getCellWidth(JTable jtab, int irow, int icol)
      Returns the preferred width in pixels of a given cell in a JTable. The table should be configured with its proper renderers and model before this is called. It is assumed that focus and selection does not affect the size.
      Parameters:
      jtab - the table