001: /*
002: * Copyright (C) 2005 Jeff Tassin
003: *
004: * This library is free software; you can redistribute it and/or
005: * modify it under the terms of the GNU Lesser General Public
006: * License as published by the Free Software Foundation; either
007: * version 2.1 of the License, or (at your option) any later version.
008: *
009: * This library is distributed in the hope that it will be useful,
010: * but WITHOUT ANY WARRANTY; without even the implied warranty of
011: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012: * Lesser General Public License for more details.
013: *
014: * You should have received a copy of the GNU Lesser General Public
015: * License along with this library; if not, write to the Free Software
016: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
017: */
018:
019: package com.jeta.swingbuilder.gui.components;
020:
021: import java.awt.Component;
022:
023: import javax.swing.ImageIcon;
024: import javax.swing.JLabel;
025: import javax.swing.JTable;
026: import javax.swing.table.AbstractTableModel;
027: import javax.swing.table.JTableHeader;
028: import javax.swing.table.TableCellRenderer;
029:
030: import com.jeta.swingbuilder.gui.utils.FormDesignerUtils;
031: import com.jeta.swingbuilder.resources.Icons;
032:
033: /**
034: * The main purpose of this class is to display an icon in the header cell that
035: * shows how the column is currently sorted. There can be one of three modes for
036: * this: ASCENDING - show up arrow DESCENDING - show down arrow NONE - no image
037: *
038: * @author Jeff Tassin
039: */
040:
041: class SortedColumnHeaderRenderer extends JLabel implements
042: TableCellRenderer {
043: static final ImageIcon m_upimage;
044: static final ImageIcon m_downimage;
045: static final ImageIcon m_emptyheaderimage;
046:
047: private SortMode m_sortmode; // the current sorting for a given column
048:
049: static {
050: m_upimage = FormDesignerUtils.loadImage(Icons.UP_16);
051: m_downimage = FormDesignerUtils.loadImage(Icons.DOWN_16);
052: m_emptyheaderimage = FormDesignerUtils
053: .loadImage("emptytableheader16.gif");
054:
055: }
056:
057: public SortedColumnHeaderRenderer() {
058: super ();
059: this .setHorizontalAlignment(JLabel.CENTER);
060: }
061:
062: /**
063: * Gets the sort mode for this renderer. Each column has a separate
064: * renderer. When the user sorts a given column, we put an icon in the
065: * header that shows whether the column is ascending, descending, or natural
066: * ordering.
067: *
068: * @return mode the sort mode to set. We get the sort mode from the SortMode
069: * class: ASCENDING, DESCENDING, or NONE
070: */
071: public SortMode getSortMode() {
072: return m_sortmode;
073: }
074:
075: /**
076: * TableCellRenderer implementation
077: */
078: public Component getTableCellRendererComponent(JTable table,
079: Object value, boolean isSelected, boolean hasFocus,
080: int row, int column) {
081: // Try to set default fore- and background colors
082: if (table != null) {
083: JTableHeader header = table.getTableHeader();
084: if (header != null) {
085: setForeground(header.getForeground());
086: setBackground(header.getBackground());
087: setFont(header.getFont());
088: AbstractTableModel model = (AbstractTableModel) table
089: .getModel();
090:
091: column = table.convertColumnIndexToModel(column);
092: setText(model.getColumnName(column));
093: // set normal border
094: setBorder(javax.swing.UIManager
095: .getBorder("TableHeader.cellBorder"));
096:
097: if (m_sortmode == SortMode.ASCENDING)
098: setIcon(m_upimage);
099: else if (m_sortmode == SortMode.DESCENDING)
100: setIcon(m_downimage);
101: else
102: // if NONE
103: setIcon(m_emptyheaderimage);
104: }
105: }
106: return this ;
107: }
108:
109: /**
110: * Sets the sort mode for this renderer. Each column has a separate
111: * renderer. When the user sorts a given column, we put an icon in the
112: * header that shows whether the column is ascending, descending, or natural
113: * ordering.
114: *
115: * @param mode
116: * the sort mode to set. We get the sort mode from the SortMode
117: * class: ASCENDING, DESCENDING, or NONE
118: */
119: public void setSortMode(SortMode mode) {
120: m_sortmode = mode;
121: }
122: }
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