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jlechner |
/* DefaultTableColumnModel.java --
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Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing.table;
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import java.beans.PropertyChangeEvent;
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import java.beans.PropertyChangeListener;
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import java.io.Serializable;
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import java.util.Enumeration;
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import java.util.EventListener;
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import java.util.Vector;
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import javax.swing.DefaultListSelectionModel;
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import javax.swing.ListSelectionModel;
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import javax.swing.event.ChangeEvent;
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import javax.swing.event.EventListenerList;
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import javax.swing.event.ListSelectionEvent;
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import javax.swing.event.ListSelectionListener;
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import javax.swing.event.TableColumnModelEvent;
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import javax.swing.event.TableColumnModelListener;
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/**
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* DefaultTableColumnModel
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* @author Andrew Selkirk
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* @version 1.0
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*/
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public class DefaultTableColumnModel
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implements TableColumnModel, PropertyChangeListener, ListSelectionListener,
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Serializable
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{
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private static final long serialVersionUID = 6580012493508960512L;
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/**
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* Columns that this model keeps track of.
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*/
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protected Vector tableColumns;
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/**
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* Selection Model that keeps track of columns selection
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*/
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protected ListSelectionModel selectionModel;
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/**
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* Space between two columns. By default it is set to 1
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*/
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protected int columnMargin;
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/**
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* listenerList keeps track of all listeners registered with this model
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*/
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protected EventListenerList listenerList = new EventListenerList();
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/**
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* changeEvent is fired when change occurs in one of the columns properties
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*/
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protected transient ChangeEvent changeEvent = new ChangeEvent(this);
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/**
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* Indicates whether columns can be selected
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*/
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protected boolean columnSelectionAllowed;
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/**
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* Total width of all the columns in this model
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*/
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protected int totalColumnWidth;
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/**
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* Constructor DefaultTableColumnModel
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*/
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public DefaultTableColumnModel()
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{
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tableColumns = new Vector();
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setSelectionModel(createSelectionModel());
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columnMargin = 1;
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columnSelectionAllowed = false;
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}
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/**
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* addColumn adds column to the model. This method fires ColumnAdded
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* event to model's registered TableColumnModelListeners.
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*
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* @param col column to add
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*/
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public void addColumn(TableColumn col)
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{
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if (col == null)
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throw new IllegalArgumentException("Null 'col' argument.");
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tableColumns.add(col);
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invalidateWidthCache();
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fireColumnAdded(new TableColumnModelEvent(this, 0, tableColumns.size() - 1));
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}
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/**
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* removeColumn removes table column from the model. This method fires
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* ColumnRemoved event to model's registered TableColumnModelListeners.
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*
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* @param col column to be removed
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*/
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public void removeColumn(TableColumn col)
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{
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int index = this.tableColumns.indexOf(col);
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if (index < 0)
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return;
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fireColumnRemoved(new TableColumnModelEvent(this, index, 0));
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tableColumns.remove(col);
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invalidateWidthCache();
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}
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/**
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* moveColumn moves column at index i to index j. This method fires
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* ColumnMoved event to model's registered TableColumnModelListeners.
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*
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* @param i index of the column that will be moved
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* @param j index of column's new location
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*/
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public void moveColumn(int i, int j)
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{
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int columnCount = getColumnCount();
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if (i < 0 || i >= columnCount)
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throw new IllegalArgumentException("Index 'i' out of range.");
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if (j < 0 || j >= columnCount)
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throw new IllegalArgumentException("Index 'j' out of range.");
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Object column = tableColumns.remove(i);
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tableColumns.add(j, column);
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fireColumnAdded(new TableColumnModelEvent(this, i, j));
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}
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/**
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* setColumnMargin sets margin of the columns.
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* @param m new column margin
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*/
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public void setColumnMargin(int m)
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{
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columnMargin = m;
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fireColumnMarginChanged();
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}
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/**
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* getColumnCount returns number of columns in the model
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* @return int number of columns in the model
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*/
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public int getColumnCount()
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{
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return tableColumns.size();
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}
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/**
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* getColumns
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* @return Enumeration
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*/
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public Enumeration getColumns()
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{
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return tableColumns.elements();
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}
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/**
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* Returns the index of the {@link TableColumn} with the given identifier.
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*
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* @param identifier the identifier (<code>null</code> not permitted).
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*
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* @return The index of the {@link TableColumn} with the given identifier.
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*
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* @throws IllegalArgumentException if <code>identifier</code> is
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* <code>null</code> or there is no column with that identifier.
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*/
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public int getColumnIndex(Object identifier)
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{
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if (identifier == null)
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throw new IllegalArgumentException("Null identifier.");
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int columnCount = tableColumns.size();
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for (int i = 0; i < columnCount; i++)
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{
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TableColumn tc = (TableColumn) tableColumns.get(i);
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if (identifier.equals(tc.getIdentifier()))
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return i;
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}
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throw new IllegalArgumentException("No TableColumn with that identifier.");
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}
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/**
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* getColumn returns column at the specified index
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* @param i index of the column
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* @return TableColumn column at the specified index
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*/
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public TableColumn getColumn(int i)
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{
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return (TableColumn) tableColumns.get(i);
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}
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/**
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* getColumnMargin returns column margin
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* @return int column margin
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*/
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public int getColumnMargin()
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{
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return columnMargin;
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}
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/**
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* getColumnIndexAtX returns column that contains specified x-coordinate.
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* @param x x-coordinate that column should contain
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* @return int index of the column that contains specified x-coordinate relative
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* to this column model
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*/
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public int getColumnIndexAtX(int x)
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{
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for (int i = 0; i < tableColumns.size(); ++i)
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{
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int w = ((TableColumn)tableColumns.get(i)).getWidth();
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if (0 <= x && x < w)
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return i;
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else
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x -= w;
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}
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return -1;
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}
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/**
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* getTotalColumnWidth returns total width of all the columns including
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* column's margins.
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*
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* @return total width of all the columns
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*/
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public int getTotalColumnWidth()
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{
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if (totalColumnWidth == -1)
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recalcWidthCache();
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return totalColumnWidth;
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}
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/**
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* setSelectionModel sets selection model that will be used by this ColumnTableModel
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* to keep track of currently selected columns
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*
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* @param model new selection model
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* @exception IllegalArgumentException if model is null
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*/
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public void setSelectionModel(ListSelectionModel model)
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{
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if (model == null)
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throw new IllegalArgumentException();
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selectionModel = model;
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selectionModel.addListSelectionListener(this);
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}
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/**
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* getSelectionModel returns selection model
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* @return ListSelectionModel selection model
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*/
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public ListSelectionModel getSelectionModel()
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{
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return selectionModel;
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}
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/**
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* setColumnSelectionAllowed sets whether column selection is allowed
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* or not.
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*
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* @param flag true if column selection is allowed and false otherwise
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*/
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public void setColumnSelectionAllowed(boolean flag)
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{
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columnSelectionAllowed = flag;
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}
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/**
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* getColumnSelectionAllowed indicates whether column selection is
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* allowed or not.
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*
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* @return boolean true if column selection is allowed and false otherwise.
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*/
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public boolean getColumnSelectionAllowed()
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{
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return columnSelectionAllowed;
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}
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314 |
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/**
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315 |
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* getSelectedColumns returns array containing indexes of currently
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316 |
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* selected columns
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*
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* @return int[] array containing indexes of currently selected columns
|
319 |
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*/
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320 |
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public int[] getSelectedColumns()
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321 |
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{
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322 |
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// FIXME: Implementation of this method was taken from private method
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323 |
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// JTable.getSelections(), which is used in various places in JTable
|
324 |
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// including selected row calculations and cannot be simply removed.
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325 |
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// This design should be improved to illuminate duplication of code.
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326 |
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327 |
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ListSelectionModel lsm = this.selectionModel;
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328 |
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int sz = getSelectedColumnCount();
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329 |
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int [] ret = new int[sz];
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330 |
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331 |
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int lo = lsm.getMinSelectionIndex();
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332 |
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int hi = lsm.getMaxSelectionIndex();
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333 |
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int j = 0;
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334 |
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java.util.ArrayList ls = new java.util.ArrayList();
|
335 |
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if (lo != -1 && hi != -1)
|
336 |
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{
|
337 |
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switch (lsm.getSelectionMode())
|
338 |
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{
|
339 |
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case ListSelectionModel.SINGLE_SELECTION:
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340 |
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ret[0] = lo;
|
341 |
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break;
|
342 |
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|
343 |
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case ListSelectionModel.SINGLE_INTERVAL_SELECTION:
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344 |
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for (int i = lo; i <= hi; ++i)
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345 |
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ret[j++] = i;
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346 |
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break;
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347 |
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|
348 |
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case ListSelectionModel.MULTIPLE_INTERVAL_SELECTION:
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349 |
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for (int i = lo; i <= hi; ++i)
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350 |
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if (lsm.isSelectedIndex(i))
|
351 |
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ret[j++] = i;
|
352 |
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break;
|
353 |
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}
|
354 |
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}
|
355 |
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return ret;
|
356 |
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}
|
357 |
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|
358 |
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/**
|
359 |
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* getSelectedColumnCount returns number of currently selected columns
|
360 |
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* @return int number of currently selected columns
|
361 |
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*/
|
362 |
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public int getSelectedColumnCount()
|
363 |
|
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{
|
364 |
|
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// FIXME: Implementation of this method was taken from private method
|
365 |
|
|
// JTable.countSelections(), which is used in various places in JTable
|
366 |
|
|
// including selected row calculations and cannot be simply removed.
|
367 |
|
|
// This design should be improved to illuminate duplication of code.
|
368 |
|
|
|
369 |
|
|
ListSelectionModel lsm = this.selectionModel;
|
370 |
|
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int lo = lsm.getMinSelectionIndex();
|
371 |
|
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int hi = lsm.getMaxSelectionIndex();
|
372 |
|
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int sum = 0;
|
373 |
|
|
|
374 |
|
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if (lo != -1 && hi != -1)
|
375 |
|
|
{
|
376 |
|
|
switch (lsm.getSelectionMode())
|
377 |
|
|
{
|
378 |
|
|
case ListSelectionModel.SINGLE_SELECTION:
|
379 |
|
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sum = 1;
|
380 |
|
|
break;
|
381 |
|
|
|
382 |
|
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case ListSelectionModel.SINGLE_INTERVAL_SELECTION:
|
383 |
|
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sum = hi - lo + 1;
|
384 |
|
|
break;
|
385 |
|
|
|
386 |
|
|
case ListSelectionModel.MULTIPLE_INTERVAL_SELECTION:
|
387 |
|
|
for (int i = lo; i <= hi; ++i)
|
388 |
|
|
if (lsm.isSelectedIndex(i))
|
389 |
|
|
++sum;
|
390 |
|
|
break;
|
391 |
|
|
}
|
392 |
|
|
}
|
393 |
|
|
|
394 |
|
|
return sum;
|
395 |
|
|
}
|
396 |
|
|
|
397 |
|
|
/**
|
398 |
|
|
* addColumnModelListener adds specified listener to the model's
|
399 |
|
|
* listener list
|
400 |
|
|
*
|
401 |
|
|
* @param listener the listener to add
|
402 |
|
|
*/
|
403 |
|
|
public void addColumnModelListener(TableColumnModelListener listener)
|
404 |
|
|
{
|
405 |
|
|
listenerList.add(TableColumnModelListener.class, listener);
|
406 |
|
|
}
|
407 |
|
|
|
408 |
|
|
/**
|
409 |
|
|
* removeColumnModelListener removes specified listener from the model's
|
410 |
|
|
* listener list.
|
411 |
|
|
*
|
412 |
|
|
* @param listener the listener to remove
|
413 |
|
|
*/
|
414 |
|
|
public void removeColumnModelListener(TableColumnModelListener listener)
|
415 |
|
|
{
|
416 |
|
|
listenerList.remove(TableColumnModelListener.class, listener);
|
417 |
|
|
}
|
418 |
|
|
|
419 |
|
|
/**
|
420 |
|
|
* @since 1.4
|
421 |
|
|
*/
|
422 |
|
|
public TableColumnModelListener[] getColumnModelListeners()
|
423 |
|
|
{
|
424 |
|
|
return (TableColumnModelListener[])
|
425 |
|
|
listenerList.getListeners(TableColumnModelListener.class);
|
426 |
|
|
}
|
427 |
|
|
|
428 |
|
|
/**
|
429 |
|
|
* fireColumnAdded fires TableColumnModelEvent to registered
|
430 |
|
|
* TableColumnModelListeners to indicate that column was added
|
431 |
|
|
*
|
432 |
|
|
* @param e TableColumnModelEvent
|
433 |
|
|
*/
|
434 |
|
|
protected void fireColumnAdded(TableColumnModelEvent e)
|
435 |
|
|
{
|
436 |
|
|
TableColumnModelListener[] listeners = getColumnModelListeners();
|
437 |
|
|
|
438 |
|
|
for (int i=0; i< listeners.length; i++)
|
439 |
|
|
listeners[i].columnAdded(e);
|
440 |
|
|
}
|
441 |
|
|
|
442 |
|
|
/**
|
443 |
|
|
* fireColumnAdded fires TableColumnModelEvent to registered
|
444 |
|
|
* TableColumnModelListeners to indicate that column was removed
|
445 |
|
|
*
|
446 |
|
|
* @param e TableColumnModelEvent
|
447 |
|
|
*/
|
448 |
|
|
protected void fireColumnRemoved(TableColumnModelEvent e)
|
449 |
|
|
{
|
450 |
|
|
TableColumnModelListener[] listeners = getColumnModelListeners();
|
451 |
|
|
|
452 |
|
|
for (int i=0; i< listeners.length; i++)
|
453 |
|
|
listeners[i].columnRemoved(e);
|
454 |
|
|
}
|
455 |
|
|
|
456 |
|
|
/**
|
457 |
|
|
* fireColumnAdded fires TableColumnModelEvent to registered
|
458 |
|
|
* TableColumnModelListeners to indicate that column was moved
|
459 |
|
|
*
|
460 |
|
|
* @param e TableColumnModelEvent
|
461 |
|
|
*/
|
462 |
|
|
protected void fireColumnMoved(TableColumnModelEvent e)
|
463 |
|
|
{
|
464 |
|
|
TableColumnModelListener[] listeners = getColumnModelListeners();
|
465 |
|
|
|
466 |
|
|
for (int i=0; i< listeners.length; i++)
|
467 |
|
|
listeners[i].columnMoved(e);
|
468 |
|
|
}
|
469 |
|
|
|
470 |
|
|
/**
|
471 |
|
|
* fireColumnSelectionChanged fires TableColumnModelEvent to model's
|
472 |
|
|
* registered TableColumnModelListeners to indicate that different column
|
473 |
|
|
* was selected.
|
474 |
|
|
*
|
475 |
|
|
* @param evt ListSelectionEvent
|
476 |
|
|
*/
|
477 |
|
|
protected void fireColumnSelectionChanged(ListSelectionEvent evt)
|
478 |
|
|
{
|
479 |
|
|
EventListener [] listeners = getListeners(TableColumnModelListener.class);
|
480 |
|
|
for (int i = 0; i < listeners.length; ++i)
|
481 |
|
|
((TableColumnModelListener)listeners[i]).columnSelectionChanged(evt);
|
482 |
|
|
}
|
483 |
|
|
|
484 |
|
|
/**
|
485 |
|
|
* fireColumnMarginChanged fires TableColumnModelEvent to model's
|
486 |
|
|
* registered TableColumnModelListeners to indicate that column margin
|
487 |
|
|
* was changed.
|
488 |
|
|
*/
|
489 |
|
|
protected void fireColumnMarginChanged()
|
490 |
|
|
{
|
491 |
|
|
EventListener [] listeners = getListeners(TableColumnModelListener.class);
|
492 |
|
|
for (int i = 0; i < listeners.length; ++i)
|
493 |
|
|
((TableColumnModelListener)listeners[i]).columnMarginChanged(changeEvent);
|
494 |
|
|
}
|
495 |
|
|
|
496 |
|
|
/**
|
497 |
|
|
* getListeners returns currently registered listeners with this model.
|
498 |
|
|
* @param listenerType type of listeners to return
|
499 |
|
|
*
|
500 |
|
|
* @return EventListener[] array of model's listeners of the specified type
|
501 |
|
|
*/
|
502 |
|
|
public EventListener[] getListeners(Class listenerType)
|
503 |
|
|
{
|
504 |
|
|
return listenerList.getListeners(listenerType);
|
505 |
|
|
}
|
506 |
|
|
|
507 |
|
|
/**
|
508 |
|
|
* propertyChange handles changes occuring in the properties of the
|
509 |
|
|
* model's columns.
|
510 |
|
|
*
|
511 |
|
|
* @param evt PropertyChangeEvent
|
512 |
|
|
*/
|
513 |
|
|
public void propertyChange(PropertyChangeEvent evt)
|
514 |
|
|
{
|
515 |
|
|
if (evt.getPropertyName().equals(TableColumn.COLUMN_WIDTH_PROPERTY))
|
516 |
|
|
invalidateWidthCache();
|
517 |
|
|
}
|
518 |
|
|
|
519 |
|
|
/**
|
520 |
|
|
* valueChanged handles changes in the selectionModel.
|
521 |
|
|
* @param e ListSelectionEvent
|
522 |
|
|
*/
|
523 |
|
|
public void valueChanged(ListSelectionEvent e)
|
524 |
|
|
{
|
525 |
|
|
fireColumnSelectionChanged(e);
|
526 |
|
|
}
|
527 |
|
|
|
528 |
|
|
/**
|
529 |
|
|
* createSelectionModel creates selection model that will keep track
|
530 |
|
|
* of currently selected column(s)
|
531 |
|
|
*
|
532 |
|
|
* @return ListSelectionModel selection model of the columns
|
533 |
|
|
*/
|
534 |
|
|
protected ListSelectionModel createSelectionModel()
|
535 |
|
|
{
|
536 |
|
|
return new DefaultListSelectionModel();
|
537 |
|
|
}
|
538 |
|
|
|
539 |
|
|
/**
|
540 |
|
|
* recalcWidthCache calculates total width of the columns.
|
541 |
|
|
* If the current cache of the total width is in invalidated state,
|
542 |
|
|
* then width is recalculated. Otherwise nothing is done.
|
543 |
|
|
*/
|
544 |
|
|
protected void recalcWidthCache()
|
545 |
|
|
{
|
546 |
|
|
if (totalColumnWidth == -1)
|
547 |
|
|
{
|
548 |
|
|
totalColumnWidth = 0;
|
549 |
|
|
for (int i = 0; i < tableColumns.size(); ++i)
|
550 |
|
|
{
|
551 |
|
|
totalColumnWidth += ((TableColumn)tableColumns.get(i)).getWidth();
|
552 |
|
|
}
|
553 |
|
|
}
|
554 |
|
|
}
|
555 |
|
|
|
556 |
|
|
/**
|
557 |
|
|
* invalidateWidthCache
|
558 |
|
|
*/
|
559 |
|
|
private void invalidateWidthCache()
|
560 |
|
|
{
|
561 |
|
|
totalColumnWidth = -1;
|
562 |
|
|
}
|
563 |
|
|
}
|