libjava/classpath/javax/swing/table/TableColumnModel.java

   1 /* TableColumnModel.java --
   2    Copyright (C) 2002, 2004, 2005, 2006,  Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package javax.swing.table;
  40
  41 import java.util.Enumeration;
  42
  43 import javax.swing.JTable;
  44 import javax.swing.ListSelectionModel;
  45 import javax.swing.event.ChangeEvent;
  46 import javax.swing.event.TableColumnModelEvent;
  47 import javax.swing.event.TableColumnModelListener;
  48
  49 /**
  50  * The interface used by {@link JTable} to access the columns in the table
  51  * view.
  52  *
  53  * @author Andrew Selkirk
  54  */
  55 public interface TableColumnModel
  56 {
  57   /**
  58    * Adds a column to the model.
  59    *
  60    * @param column  the new column (<code>null</code> not permitted).
  61    *
  62    * @throws IllegalArgumentException if <code>column</code> is
  63    *         <code>null</code>.
  64    */
  65   void addColumn(TableColumn column);
  66
  67   /**
  68    * Removes a column from the model.  If <code>column</code> is not defined
  69    * in the model, this method does nothing.
  70    *
  71    * @param column TableColumn
  72    */
  73   void removeColumn(TableColumn column);
  74
  75   /**
  76    * Moves a column.
  77    *
  78    * @param columnIndex Index of column to move
  79    * @param newIndex New index of column
  80    */
  81   void moveColumn(int columnIndex, int newIndex);
  82
  83   /**
  84    * Sets the column margin and sends a {@link ChangeEvent} to all registered
  85    * {@link TableColumnModelListener}s registered with the model.
  86    *
  87    * @param margin  the column margin.
  88    *
  89    * @see #getColumnMargin()
  90    */
  91   void setColumnMargin(int margin);
  92
  93   /**
  94    * Returns the number of columns in the model.
  95    *
  96    * @return The column count.
  97    */
  98   int getColumnCount();
  99
 100   /**
 101    * Returns an enumeration of the columns in the model.
 102    *
 103    * @return An enumeration of the columns in the model.
 104    */
 105   Enumeration getColumns();
 106
 107   /**
 108    * Returns the index of the {@link TableColumn} with the given identifier.
 109    *
 110    * @param identifier  the identifier (<code>null</code> not permitted).
 111    *
 112    * @return The index of the {@link TableColumn} with the given identifier.
 113    *
 114    * @throws IllegalArgumentException if <code>identifier</code> is
 115    *         <code>null</code> or there is no column with that identifier.
 116    */
 117   int getColumnIndex(Object identifier);
 118
 119   /**
 120    * Returns the <code>TableColumn</code> at the specified index.
 121    *
 122    * @param columnIndex  the column index.
 123    *
 124    * @return The table column.
 125    */
 126   TableColumn getColumn(int columnIndex);
 127
 128   /**
 129    * Returns the column margin.
 130    *
 131    * @return The column margin.
 132    *
 133    * @see #setColumnMargin(int)
 134    */
 135   int getColumnMargin();
 136
 137   /**
 138    * Returns the index of the column that contains the specified x-coordinate,
 139    * assuming that:
 140    * <ul>
 141    * <li>column zero begins at position zero;</li>
 142    * <li>all columns appear in order;</li>
 143    * <li>individual column widths are taken into account, but the column margin
 144    *     is ignored.</li>
 145    * </ul>
 146    * If no column contains the specified position, this method returns
 147    * <code>-1</code>.
 148    *
 149    * @param xPosition  the x-position.
 150    *
 151    * @return The column index, or <code>-1</code>.
 152    */
 153   int getColumnIndexAtX(int xPosition);
 154
 155   /**
 156    * Returns total width of all the columns in the model, ignoring the
 157    * column margin (see {@link #getColumnMargin()}).
 158    *
 159    * @return The total width of all the columns.
 160    */
 161   int getTotalColumnWidth();
 162
 163   /**
 164    * Sets the flag that indicates whether or not column selection is allowed.
 165    *
 166    * @param allowed  the new flag value.
 167    *
 168    * @see #getColumnSelectionAllowed()
 169    */
 170   void setColumnSelectionAllowed(boolean allowed);
 171
 172   /**
 173    * Returns <code>true</code> if column selection is allowed, and
 174    * <code>false</code> if column selection is not allowed.
 175    *
 176    * @return A boolean.
 177    *
 178    * @see #setColumnSelectionAllowed(boolean)
 179    */
 180   boolean getColumnSelectionAllowed();
 181
 182   /**
 183    * getSelectedColumns
 184    * @return Selected columns
 185    */
 186   int[] getSelectedColumns();
 187
 188   /**
 189    * Returns the number of selected columns in the model.
 190    *
 191    * @return The selected column count.
 192    *
 193    * @see #getSelectionModel()
 194    */
 195   int getSelectedColumnCount();
 196
 197   /**
 198    * Sets the selection model that will be used to keep track of the selected
 199    * columns.
 200    *
 201    * @param model  the selection model (<code>null</code> not permitted).
 202    *
 203    * @throws IllegalArgumentException if <code>model</code> is
 204    *     <code>null</code>.
 205    */
 206   void setSelectionModel(ListSelectionModel model);
 207
 208   /**
 209    * Returns the selection model used to track table column selections.
 210    *
 211    * @return The selection model.
 212    *
 213    * @see #setSelectionModel(ListSelectionModel)
 214    */
 215   ListSelectionModel getSelectionModel();
 216
 217   /**
 218    * Registers a listener with the model, so that it will receive
 219    * {@link TableColumnModelEvent} notifications.
 220    *
 221    * @param listener the listener (<code>null</code> ignored).
 222    */
 223   void addColumnModelListener(TableColumnModelListener listener);
 224
 225   /**
 226    * Deregisters a listener, so that it will no longer receive
 227    * {@link TableColumnModelEvent} notifications.
 228    *
 229    * @param listener  the listener.
 230    */
 231   void removeColumnModelListener(TableColumnModelListener listener);
 232 }