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694 lines
20 KiB
Java
694 lines
20 KiB
Java
/* TableColumn.java --
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Copyright (C) 2002, 2004, 2005, 2006, 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.awt.Component;
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import java.awt.Dimension;
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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 javax.swing.event.SwingPropertyChangeSupport;
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/**
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* Represents the attributes of a column in a table, including the column index,
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* width, minimum width, preferred width and maximum width.
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*
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* @author Andrew Selkirk
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*/
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public class TableColumn
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implements Serializable
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{
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static final long serialVersionUID = -6113660025878112608L;
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/**
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* The name for the <code>columnWidth</code> property (this field is
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* obsolete and no longer used). Note also that the typo in the value
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* string is deliberate, to match the specification.
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*/
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public static final String COLUMN_WIDTH_PROPERTY = "columWidth";
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/**
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* The name for the <code>headerValue</code> property.
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*/
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public static final String HEADER_VALUE_PROPERTY = "headerValue";
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/**
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* The name for the <code>headerRenderer</code> property.
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*/
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public static final String HEADER_RENDERER_PROPERTY = "headerRenderer";
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/**
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* The name for the <code>cellRenderer</code> property.
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*/
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public static final String CELL_RENDERER_PROPERTY = "cellRenderer";
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/**
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* The index of the corresponding column in the table model.
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*/
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protected int modelIndex;
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/**
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* The identifier for the column.
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*/
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protected Object identifier;
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/**
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* The current width for the column.
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*/
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protected int width;
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/**
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* The minimum width for the column.
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*/
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protected int minWidth = 15;
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/**
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* The preferred width for the column.
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*/
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private int preferredWidth;
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/**
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* The maximum width for the column.
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*/
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protected int maxWidth = Integer.MAX_VALUE;
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/**
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* The renderer for the column header.
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*/
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protected TableCellRenderer headerRenderer;
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/**
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* The value for the column header.
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*/
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protected Object headerValue;
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/**
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* The renderer for the regular cells in this column.
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*/
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protected TableCellRenderer cellRenderer;
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/**
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* An editor for the regular cells in this column.
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*/
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protected TableCellEditor cellEditor;
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/**
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* A flag that determines whether or not the column is resizable (the default
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* is <code>true</code>).
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*/
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protected boolean isResizable = true;
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/**
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* resizedPostingDisableCount
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*
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* @deprecated 1.3
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*/
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protected transient int resizedPostingDisableCount;
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/**
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* A storage and notification mechanism for property change listeners.
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*/
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private SwingPropertyChangeSupport changeSupport =
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new SwingPropertyChangeSupport(this);
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/**
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* Creates a new <code>TableColumn</code> that maps to column 0 in the
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* related table model. The default width is <code>75</code> units.
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*/
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public TableColumn()
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{
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this(0, 75, null, null);
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}
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/**
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* Creates a new <code>TableColumn</code> that maps to the specified column
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* in the related table model. The default width is <code>75</code> units.
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*
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* @param modelIndex the index of the column in the model
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*/
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public TableColumn(int modelIndex)
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{
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this(modelIndex, 75, null, null);
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}
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/**
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* Creates a new <code>TableColumn</code> that maps to the specified column
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* in the related table model, and has the specified <code>width</code>.
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*
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* @param modelIndex the index of the column in the model
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* @param width the width
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*/
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public TableColumn(int modelIndex, int width)
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{
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this(modelIndex, width, null, null);
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}
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/**
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* Creates a new <code>TableColumn</code> that maps to the specified column
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* in the related table model, and has the specified <code>width</code>,
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* <code>cellRenderer</code> and <code>cellEditor</code>.
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*
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* @param modelIndex the index of the column in the model
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* @param width the width
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* @param cellRenderer the cell renderer (<code>null</code> permitted).
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* @param cellEditor the cell editor (<code>null</code> permitted).
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*/
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public TableColumn(int modelIndex, int width,
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TableCellRenderer cellRenderer, TableCellEditor cellEditor)
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{
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this.modelIndex = modelIndex;
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this.width = width;
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this.preferredWidth = width;
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this.cellRenderer = cellRenderer;
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this.cellEditor = cellEditor;
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this.headerValue = null;
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this.identifier = null;
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}
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/**
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* Sets the index of the column in the related {@link TableModel} that this
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* <code>TableColumn</code> maps to, and sends a {@link PropertyChangeEvent}
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* (with the property name 'modelIndex') to all registered listeners.
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*
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* @param modelIndex the column index in the model.
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*
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* @see #getModelIndex()
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*/
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public void setModelIndex(int modelIndex)
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{
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if (this.modelIndex != modelIndex)
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{
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int oldValue = this.modelIndex;
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this.modelIndex = modelIndex;
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changeSupport.firePropertyChange("modelIndex", oldValue, modelIndex);
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}
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}
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/**
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* Returns the index of the column in the related {@link TableModel} that
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* this <code>TableColumn</code> maps to.
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*
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* @return the model index.
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*
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* @see #setModelIndex(int)
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*/
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public int getModelIndex()
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{
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return modelIndex;
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}
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/**
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* Sets the identifier for the column and sends a {@link PropertyChangeEvent}
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* (with the property name 'identifier') to all registered listeners.
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*
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* @param identifier the identifier (<code>null</code> permitted).
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*
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* @see #getIdentifier()
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*/
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public void setIdentifier(Object identifier)
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{
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if (this.identifier != identifier)
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{
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Object oldValue = this.identifier;
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this.identifier = identifier;
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changeSupport.firePropertyChange("identifier", oldValue, identifier);
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}
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}
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/**
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* Returns the identifier for the column, or {@link #getHeaderValue()} if the
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* identifier is <code>null</code>.
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*
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* @return The identifier (or {@link #getHeaderValue()} if the identifier is
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* <code>null</code>).
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*/
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public Object getIdentifier()
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{
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if (identifier == null)
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return getHeaderValue();
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return identifier;
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}
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/**
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* Sets the header value and sends a {@link PropertyChangeEvent} (with the
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* property name {@link #HEADER_VALUE_PROPERTY}) to all registered listeners.
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*
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* @param headerValue the value of the header (<code>null</code> permitted).
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*
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* @see #getHeaderValue()
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*/
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public void setHeaderValue(Object headerValue)
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{
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if (this.headerValue == headerValue)
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return;
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Object oldValue = this.headerValue;
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this.headerValue = headerValue;
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changeSupport.firePropertyChange(HEADER_VALUE_PROPERTY, oldValue,
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headerValue);
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}
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/**
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* Returns the header value.
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*
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* @return the value of the header.
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*
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* @see #getHeaderValue()
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*/
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public Object getHeaderValue()
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{
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return headerValue;
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}
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/**
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* Sets the renderer for the column header and sends a
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* {@link PropertyChangeEvent} (with the property name
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* {@link #HEADER_RENDERER_PROPERTY}) to all registered listeners.
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*
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* @param renderer the header renderer (<code>null</code> permitted).
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*
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* @see #getHeaderRenderer()
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*/
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public void setHeaderRenderer(TableCellRenderer renderer)
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{
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if (headerRenderer == renderer)
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return;
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TableCellRenderer oldRenderer = headerRenderer;
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headerRenderer = renderer;
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changeSupport.firePropertyChange(HEADER_RENDERER_PROPERTY, oldRenderer,
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headerRenderer);
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}
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/**
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* Returns the renderer for the column header.
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*
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* @return The renderer for the column header (possibly <code>null</code>).
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*
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* @see #setHeaderRenderer(TableCellRenderer)
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*/
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public TableCellRenderer getHeaderRenderer()
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{
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return headerRenderer;
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}
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/**
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* Sets the renderer for cells in this column and sends a
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* {@link PropertyChangeEvent} (with the property name
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* {@link #CELL_RENDERER_PROPERTY}) to all registered listeners.
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*
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* @param renderer the cell renderer (<code>null</code> permitted).
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*
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* @see #getCellRenderer()
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*/
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public void setCellRenderer(TableCellRenderer renderer)
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{
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if (cellRenderer == renderer)
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return;
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TableCellRenderer oldRenderer = cellRenderer;
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cellRenderer = renderer;
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changeSupport.firePropertyChange(CELL_RENDERER_PROPERTY, oldRenderer,
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cellRenderer);
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}
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/**
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* Returns the renderer for the table cells in this column.
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*
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* @return The cell renderer (possibly <code>null</code>).
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*
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* @see #setCellRenderer(TableCellRenderer)
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*/
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public TableCellRenderer getCellRenderer()
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{
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return cellRenderer;
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}
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/**
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* Sets the cell editor for the column and sends a {@link PropertyChangeEvent}
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* (with the property name 'cellEditor') to all registered listeners.
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*
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* @param cellEditor the cell editor (<code>null</code> permitted).
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*
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* @see #getCellEditor()
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*/
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public void setCellEditor(TableCellEditor cellEditor)
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{
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if (this.cellEditor != cellEditor)
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{
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TableCellEditor oldValue = this.cellEditor;
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this.cellEditor = cellEditor;
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changeSupport.firePropertyChange("cellEditor", oldValue, cellEditor);
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}
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}
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/**
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* Returns the cell editor for the column (the default value is
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* <code>null</code>).
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*
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* @return The cell editor (possibly <code>null</code>).
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*
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* @see #setCellEditor(TableCellEditor)
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*/
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public TableCellEditor getCellEditor()
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{
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return cellEditor;
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}
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/**
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* Sets the width for the column and sends a {@link PropertyChangeEvent}
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* (with the property name 'width') to all registered listeners. If the new
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* width falls outside the range getMinWidth() to getMaxWidth() it is
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* adjusted to the appropriate boundary value.
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*
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* @param newWidth the width.
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*
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* @see #getWidth()
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*/
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public void setWidth(int newWidth)
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{
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int oldWidth = width;
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if (newWidth < minWidth)
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width = minWidth;
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else if (newWidth > maxWidth)
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width = maxWidth;
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else
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width = newWidth;
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if (width == oldWidth)
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return;
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// We do have a constant field COLUMN_WIDTH_PROPERTY,
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// however, tests show that the actual fired property name is 'width'
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// and even Sun's API docs say that this constant field is obsolete and
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// not used.
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changeSupport.firePropertyChange("width", oldWidth, width);
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}
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/**
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* Returns the width for the column (the default value is <code>75</code>).
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*
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* @return The width.
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*
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* @see #setWidth(int)
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*/
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public int getWidth()
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{
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return width;
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}
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/**
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* Sets the preferred width for the column and sends a
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* {@link PropertyChangeEvent} (with the property name 'preferredWidth') to
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* all registered listeners. If necessary, the supplied value will be
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* adjusted to fit in the range {@link #getMinWidth()} to
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* {@link #getMaxWidth()}.
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*
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* @param preferredWidth the preferred width.
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*
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* @see #getPreferredWidth()
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*/
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public void setPreferredWidth(int preferredWidth)
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{
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int oldPrefWidth = this.preferredWidth;
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if (preferredWidth < minWidth)
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this.preferredWidth = minWidth;
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else if (preferredWidth > maxWidth)
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this.preferredWidth = maxWidth;
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else
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this.preferredWidth = preferredWidth;
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changeSupport.firePropertyChange("preferredWidth", oldPrefWidth,
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this.preferredWidth);
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}
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/**
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* Returns the preferred width for the column (the default value is
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* <code>75</code>).
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*
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* @return The preferred width.
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*
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* @see #setPreferredWidth(int)
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*/
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public int getPreferredWidth()
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{
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return preferredWidth;
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}
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/**
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* Sets the minimum width for the column and sends a
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* {@link PropertyChangeEvent} (with the property name 'minWidth') to all
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* registered listeners. If the current <code>width</code> and/or
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* <code>preferredWidth</code> are less than the new minimum width, they are
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* adjusted accordingly.
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*
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* @param minWidth the minimum width (negative values are treated as 0).
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*
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* @see #getMinWidth()
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*/
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public void setMinWidth(int minWidth)
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{
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if (minWidth < 0)
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minWidth = 0;
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if (this.minWidth != minWidth)
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{
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if (width < minWidth)
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setWidth(minWidth);
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if (preferredWidth < minWidth)
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setPreferredWidth(minWidth);
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int oldValue = this.minWidth;
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this.minWidth = minWidth;
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changeSupport.firePropertyChange("minWidth", oldValue, minWidth);
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}
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}
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/**
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* Returns the <code>TableColumn</code>'s minimum width (the default value
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* is <code>15</code>).
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*
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* @return The minimum width.
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*
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* @see #setMinWidth(int)
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*/
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public int getMinWidth()
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{
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return minWidth;
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}
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/**
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* Sets the maximum width for the column and sends a
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* {@link PropertyChangeEvent} (with the property name 'maxWidth') to all
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* registered listeners. If the current <code>width</code> and/or
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* <code>preferredWidth</code> are greater than the new maximum width, they
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* are adjusted accordingly.
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*
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* @param maxWidth the maximum width.
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*
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* @see #getMaxWidth()
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*/
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public void setMaxWidth(int maxWidth)
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{
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if (this.maxWidth != maxWidth)
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{
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if (width > maxWidth)
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setWidth(maxWidth);
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if (preferredWidth > maxWidth)
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setPreferredWidth(maxWidth);
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int oldValue = this.maxWidth;
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this.maxWidth = maxWidth;
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changeSupport.firePropertyChange("maxWidth", oldValue, maxWidth);
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}
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}
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/**
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* Returns the maximum width for the column (the default value is
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* {@link Integer#MAX_VALUE}).
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*
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* @return The maximum width for the column.
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*
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* @see #setMaxWidth(int)
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*/
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public int getMaxWidth()
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{
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return maxWidth;
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}
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/**
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* Sets the flag that controls whether or not the column is resizable, and
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* sends a {@link PropertyChangeEvent} (with the property name 'isResizable')
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* to all registered listeners.
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*
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* @param isResizable <code>true</code> if this column is resizable,
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* <code>false</code> otherwise.
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*
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* @see #getResizable()
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*/
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public void setResizable(boolean isResizable)
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{
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if (this.isResizable != isResizable)
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{
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this.isResizable = isResizable;
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changeSupport.firePropertyChange("isResizable", !this.isResizable,
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isResizable);
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}
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}
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/**
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* Returns the flag that controls whether or not the column is resizable.
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*
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* @return <code>true</code> if this column is resizable,
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* <code>false</code> otherwise.
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*
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* @see #setResizable(boolean)
|
|
*/
|
|
public boolean getResizable()
|
|
{
|
|
return isResizable;
|
|
}
|
|
|
|
/**
|
|
* Sets the minimum, maximum, preferred and current width to match the
|
|
* minimum, maximum and preferred width of the header renderer component.
|
|
* If there is no header renderer component, this method does nothing.
|
|
*/
|
|
public void sizeWidthToFit()
|
|
{
|
|
if (headerRenderer == null)
|
|
return;
|
|
Component c = headerRenderer.getTableCellRendererComponent(null,
|
|
getHeaderValue(), false, false, 0, 0);
|
|
Dimension min = c.getMinimumSize();
|
|
Dimension max = c.getMaximumSize();
|
|
Dimension pref = c.getPreferredSize();
|
|
setMinWidth(min.width);
|
|
setMaxWidth(max.width);
|
|
setPreferredWidth(pref.width);
|
|
setWidth(pref.width);
|
|
}
|
|
|
|
/**
|
|
* This method is empty, unused and deprecated.
|
|
* @deprecated 1.3
|
|
*/
|
|
public void disableResizedPosting()
|
|
{
|
|
// Does nothing
|
|
}
|
|
|
|
/**
|
|
* This method is empty, unused and deprecated.
|
|
* @deprecated 1.3
|
|
*/
|
|
public void enableResizedPosting()
|
|
{
|
|
// Does nothing
|
|
}
|
|
|
|
/**
|
|
* Adds a listener so that it receives {@link PropertyChangeEvent}
|
|
* notifications from this column. The properties defined by the column are:
|
|
* <ul>
|
|
* <li><code>width</code> - see {@link #setWidth(int)};</li>
|
|
* <li><code>preferredWidth</code> - see {@link #setPreferredWidth(int)};</li>
|
|
* <li><code>minWidth</code> - see {@link #setMinWidth(int)};</li>
|
|
* <li><code>maxWidth</code> - see {@link #setMaxWidth(int)};</li>
|
|
* <li><code>modelIndex</code> - see {@link #setModelIndex(int)};</li>
|
|
* <li><code>isResizable</code> - see {@link #setResizable(boolean)};</li>
|
|
* <li><code>cellRenderer</code> - see
|
|
* {@link #setCellRenderer(TableCellRenderer)};</li>
|
|
* <li><code>cellEditor</code> - see
|
|
* {@link #setCellEditor(TableCellEditor)};</li>
|
|
* <li><code>headerRenderer</code> - see
|
|
* {@link #setHeaderRenderer(TableCellRenderer)};</li>
|
|
* <li><code>headerValue</code> - see {@link #setHeaderValue(Object)};</li>
|
|
* <li><code>identifier</code> - see {@link #setIdentifier(Object)}.</li>
|
|
* </ul>
|
|
*
|
|
* @param listener the listener to add (<code>null</code> is ignored).
|
|
*
|
|
* @see #removePropertyChangeListener(PropertyChangeListener)
|
|
*/
|
|
public synchronized void addPropertyChangeListener(
|
|
PropertyChangeListener listener)
|
|
{
|
|
changeSupport.addPropertyChangeListener(listener);
|
|
}
|
|
|
|
/**
|
|
* Removes a listener so that it no longer receives
|
|
* {@link PropertyChangeEvent} notifications from this column. If
|
|
* <code>listener</code> is not registered with the column, or is
|
|
* <code>null</code>, this method does nothing.
|
|
*
|
|
* @param listener the listener to remove (<code>null</code> is ignored).
|
|
*/
|
|
public synchronized void removePropertyChangeListener(
|
|
PropertyChangeListener listener)
|
|
{
|
|
changeSupport.removePropertyChangeListener(listener);
|
|
}
|
|
|
|
/**
|
|
* Returns the property change listeners for this <code>TableColumn</code>.
|
|
* An empty array is returned if there are currently no listeners registered.
|
|
*
|
|
* @return The property change listeners registered with this column.
|
|
*
|
|
* @since 1.4
|
|
*/
|
|
public PropertyChangeListener[] getPropertyChangeListeners()
|
|
{
|
|
return changeSupport.getPropertyChangeListeners();
|
|
}
|
|
|
|
/**
|
|
* Creates and returns a default renderer for the column header (in this case,
|
|
* a new instance of {@link DefaultTableCellRenderer}).
|
|
*
|
|
* @return A default renderer for the column header.
|
|
*/
|
|
protected TableCellRenderer createDefaultHeaderRenderer()
|
|
{
|
|
return new DefaultTableCellRenderer();
|
|
}
|
|
}
|