/*
* @(#)ColumnList.java 1.5 02/08/21
*
* Copyright (c) 1996-2002 Sun Microsystems, Inc. All rights reserved.
*/
package com.sun.media.ui;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
public class ColumnList extends Canvas implements MouseListener, FocusListener, KeyListener, ComponentListener {
public static final int TYPE_INTEGER = 1;
public static final int TYPE_DOUBLE = 2;
public static final int TYPE_STRING = 3;
public static final int TYPE_DATE = 4;
private static final int MARGIN_VERT = 2;
private static final int MARGIN_HORZ = 6;
private static final Color COLOR_HEADER_BG = Color.lightGray;
private static final Color COLOR_HEADER_FG = Color.black;
private static final Color COLOR_SHADOW_TOP = Color.white;
private static final Color COLOR_SHADOW_BOTTOM = Color.darkGray;
// private static final Color COLOR_SEL_BG = new Color ( 0, 0, 128 );
// private static final Color COLOR_SEL_FG = Color.yellow;
private static final Color COLOR_SEL_BG = Color.white;
private static final Color COLOR_SEL_FG = Color.black;
private Vector vectorColumns = new Vector (); // array of ColumnData
private Vector vectorRows = new Vector (); // array of RowData
private boolean boolFocus = false;
private boolean boolSetColumnWidthAsPreferred = false;
private int nScrollPosHorz = 0;
private int nScrollPosVert = 0;
private int nCurrentIndex = 0;
private int nVisibleRows = 1;
private Font fontHeader = new Font ( "Dialog", Font.PLAIN, 12 );
private Font fontItem = new Font ( "Dialog", Font.PLAIN, 12 );
private int nHeightHeader;
private int nHeightRow;
public ColumnList ( String arrColumnNames[] ) {
super ();
int i;
int nCount;
ColumnData column;
nCount = arrColumnNames.length;
for ( i = 0; i < nCount; i++ ) {
column = new ColumnData ( arrColumnNames[i], TYPE_STRING );
vectorColumns.addElement ( column );
}
try {
init();
}
catch (Exception e) {
e.printStackTrace();
}
}
public void addRow ( Object arrValues[] ) {
RowData rowData;
rowData = new RowData ( arrValues );
vectorRows.addElement ( rowData );
repaint ();
}
public void removeRow ( int nRowIndex ) {
vectorRows.removeElementAt ( nRowIndex );
repaint ();
}
public void setCellValue ( Object value, int nRowIndex, int nColumnIndex ) {
RowData rowData;
rowData = (RowData) vectorRows.elementAt ( nRowIndex );
rowData.setValue ( value, nColumnIndex );
repaint ();
}
public void setColumnWidth ( int nWidth, int nColumnIndex ) {
ColumnData columnData;
columnData = (ColumnData) vectorColumns.elementAt ( nColumnIndex );
columnData.nWidth = nWidth;
repaint ();
}
public void setColumnWidth ( int nWidth ) {
int i;
int nCount;
ColumnData columnData;
nCount = vectorColumns.size ();
for ( i = 0; i < nCount; i++ ) {
columnData = (ColumnData) vectorColumns.elementAt ( i );
columnData.nWidth = nWidth;
}
repaint ();
}
public void setColumnWidthAsPreferred ( int nColumnIndex ) {
int nWidth;
ColumnData columnData;
columnData = (ColumnData) vectorColumns.elementAt ( nColumnIndex );
nWidth = getPreferredColumnWidth ( nColumnIndex );
columnData.nWidth = nWidth;
repaint ();
}
public void setColumnWidthAsPreferred () {
int i;
int nCount;
int nWidth;
int nWidthTotal;
ColumnData columnData;
Rectangle rect;
int nWidthExtra;
nCount = vectorColumns.size ();
nWidthTotal = 0;
for ( i = 0; i < nCount; i++ ) {
columnData = (ColumnData) vectorColumns.elementAt ( i );
nWidth = getPreferredColumnWidth ( i );
columnData.nWidth = nWidth;
nWidthTotal += nWidth;
}
rect = getBounds ();
if ( rect.width < 1 )
boolSetColumnWidthAsPreferred = true;
rect.width -= 2;
if ( rect.width > nWidthTotal ) {
nWidthExtra = (rect.width - nWidthTotal) / nCount;
nWidthTotal = rect.width;
for ( i = 0; i < nCount; i++ ) {
columnData = (ColumnData) vectorColumns.elementAt ( i );
if ( i < nCount - 1 )
columnData.nWidth += nWidthExtra;
else
columnData.nWidth = nWidthTotal;
nWidthTotal -= columnData.nWidth;
}
}
repaint ();
}
public Dimension getPreferredSize () {
int i;
int nCount;
Dimension dim;
int nWidth;
int nHeight;
dim = new Dimension ();
dim.height += this.nHeightHeader;
nHeight = this.nHeightRow;
nHeight *= vectorRows.size ();
dim.height += nHeight;
// columns
nCount = vectorColumns.size ();
for ( i = 0; i < nCount; i++ ) {
nWidth = this.getPreferredColumnWidth ( i );
dim.width += nWidth;
}
dim.width += 3; // for shadow lines
dim.height += 3; // for shadow lines
return ( dim );
}
public boolean isFocusTraversable () {
return ( true );
}
public void update ( Graphics g ) {
Rectangle rectClient;
Image image;
Graphics graphics;
rectClient = this.getBounds ();
image = createImage ( rectClient.width, rectClient.height );
if ( image != null )
graphics = image.getGraphics ();
else
graphics = g;
paint ( graphics );
if ( image != null )
g.drawImage ( image, 0, 0, this );
}
public void paint ( Graphics graphics ) {
int i, j;
int nColCount;
int nRowCount;
Rectangle rect;
Rectangle rectClient;
Font font;
FontMetrics fontMetrics;
ColumnData columnData;
RowData rowData;
int nStartX;
String strValue;
int nX;
int nY;
int nWidth;
int nHeight;
int nLength;
rectClient = this.getBounds ();
rectClient.x = 0;
rectClient.y = 0;
rect = new Rectangle ( rectClient );
super.paint ( graphics );
graphics.setColor ( COLOR_SHADOW_BOTTOM );
graphics.drawRect ( rect.x, rect.y, rect.width - 2, rect.height - 2 );
graphics.setColor ( COLOR_SHADOW_TOP );
graphics.drawLine ( rect.x + rect.width - 1, rect.y + 1, rect.x + rect.width - 1, rect.y + rect.height - 1 );
graphics.drawLine ( rect.x + 1, rect.y + rect.height - 1, rect.x + rect.width - 1, rect.y + rect.height - 1 );
nColCount = vectorColumns.size ();
nRowCount = vectorRows.size ();
rect.x += 1;
rect.y += 1;
nStartX = rect.x;
// draw header
fontMetrics = this.getFontMetrics ( fontHeader );
graphics.setFont ( this.fontHeader );
nHeight = fontMetrics.getHeight ();
rect.height = nHeightHeader;
for ( i = nScrollPosHorz; i < nColCount; i++ ) {
columnData = (ColumnData) vectorColumns.elementAt ( i );
rect.width = columnData.nWidth;
if ( rect.x + rect.width > rectClient.x + rectClient.width - 1 )
rect.width = rectClient.x + rectClient.width - 1 - rect.x;
// draw header
graphics.setColor ( COLOR_HEADER_BG );
graphics.fillRect ( rect.x, rect.y, rect.width, rect.height );
graphics.setColor ( COLOR_SHADOW_TOP );
graphics.drawLine ( rect.x, rect.y, rect.x, rect.y + rect.height - 2 );
graphics.drawLine ( rect.x, rect.y, rect.x + rect.width - 2, rect.y );
graphics.setColor ( COLOR_SHADOW_BOTTOM );
graphics.drawLine ( rect.x + rect.width - 1, rect.y + 1, rect.x + rect.width - 1, rect.y + rect.height - 1 );
graphics.drawLine ( rect.x + 1, rect.y + rect.height - 1, rect.x + rect.width - 1, rect.y + rect.height - 1 );
strValue = columnData.strName;
nLength = strValue.length ();
nWidth = fontMetrics.stringWidth ( strValue );
while ( nWidth > rect.width - 2 * MARGIN_HORZ && nLength > 0 ) {
nLength--;
strValue = strValue.substring ( 0, nLength ) + "...";
nWidth = fontMetrics.stringWidth ( strValue );
}
nX = rect.x + (rect.width - nWidth) / 2;
nY = rect.y + rect.height - (rect.height - nHeight) / 2 - fontMetrics.getMaxDescent();
graphics.setColor ( this.getForeground() );
graphics.drawString ( strValue, nX, nY );
rect.x += rect.width;
}
// draw rows
font = this.getFont ();
fontMetrics = this.getFontMetrics ( font );
graphics.setFont ( font );
nHeight = fontMetrics.getHeight ();
rect.y += rect.height;
rect.height = nHeightRow;
for ( j = nScrollPosVert; j < nRowCount; j++ ) {
rect.x = nStartX;
if ( j == nCurrentIndex ) {
rect.width = rectClient.width - 3;
graphics.setColor ( COLOR_SEL_BG );
graphics.fillRect ( rect.x, rect.y, rect.width, rect.height );
graphics.setColor ( COLOR_SEL_FG );
if ( boolFocus == true ) {
drawDottedLine ( graphics, rect.x, rect.y, rect.x + rect.width - 1, rect.y );
drawDottedLine ( graphics, rect.x, rect.y + rect.height - 1, rect.x + rect.width - 1, rect.y + rect.height - 1 );
}
}
else
graphics.setColor ( this.getForeground() );
rowData = (RowData) vectorRows.elementAt ( j );
for ( i = nScrollPosHorz; i < nColCount; i++ ) {
columnData = (ColumnData) vectorColumns.elementAt ( i );
rect.width = columnData.nWidth;
if ( rect.x + rect.width > rectClient.x + rectClient.width - 1 )
rect.width = rectClient.x + rectClient.width - 1 - rect.x;
strValue = rowData.getValue(i).toString();
nLength = strValue.length ();
nWidth = fontMetrics.stringWidth ( strValue );
while ( nWidth > rect.width - 2 * MARGIN_HORZ && nLength > 0 ) {
nLength--;
strValue = strValue.substring ( 0, nLength ) + "...";
nWidth = fontMetrics.stringWidth ( strValue );
}
nX = rect.x + MARGIN_HORZ;
nY = rect.y + rect.height - (rect.height - nHeight) / 2 - fontMetrics.getMaxDescent();
graphics.drawString ( strValue, nX, nY );
rect.x += rect.width;
}
rect.y += rect.height;
}
}
public void mouseClicked ( MouseEvent event ) {
}
public void mousePressed ( MouseEvent event ) {
int x, y;
int nIndex;
x = event.getX ();
y = event.getY ();
y -= 1 + nHeightHeader;
if ( y >= 0 ) {
nIndex = y / nHeightRow;
if ( nIndex >= 0 && nIndex < vectorRows.size() - nScrollPosVert )
nCurrentIndex = nIndex + nScrollPosVert;
}
this.requestFocus ();
repaint ();
}
public void mouseReleased ( MouseEvent event ) {
}
public void mouseEntered ( MouseEvent event ) {
}
public void mouseExited ( MouseEvent event ) {
}
public void keyTyped ( KeyEvent event ) {
}
public void keyPressed ( KeyEvent event ) {
int nKeyCode;
int nIndex;
nKeyCode = event.getKeyCode ();
nIndex = nCurrentIndex;
if ( nKeyCode == KeyEvent.VK_DOWN )
nIndex++;
else if ( nKeyCode == KeyEvent.VK_UP )
nIndex--;
else if ( nKeyCode == KeyEvent.VK_HOME )
nIndex = 0;
else if ( nKeyCode == KeyEvent.VK_END )
nIndex = vectorRows.size() - 1;
else if ( nKeyCode == KeyEvent.VK_PAGE_UP )
nIndex -= nVisibleRows;
else if ( nKeyCode == KeyEvent.VK_PAGE_DOWN )
nIndex += nVisibleRows;
if ( nIndex > vectorRows.size() - 1 )
nIndex = vectorRows.size() - 1;
if ( nIndex < 0 )
nIndex = 0;
if ( nIndex != nCurrentIndex ) {
nCurrentIndex = nIndex;
if ( nScrollPosVert + nVisibleRows < nCurrentIndex )
nScrollPosVert = nCurrentIndex - nVisibleRows + 1;
if ( nScrollPosVert > nCurrentIndex )
nScrollPosVert = nCurrentIndex;
repaint ();
}
}
public void keyReleased ( KeyEvent event ) {
}
public void focusGained ( FocusEvent event ) {
if ( boolFocus == true )
return;
boolFocus = true;
repaint ();
}
public void focusLost ( FocusEvent event ) {
if ( boolFocus == false )
return;
boolFocus = false;
repaint ();
}
public void componentResized ( ComponentEvent event ) {
Rectangle rect;
if ( boolSetColumnWidthAsPreferred == true ) {
boolSetColumnWidthAsPreferred = false;
this.setColumnWidthAsPreferred ();
}
rect = getBounds ();
rect.height -= 3 + nHeightHeader;
nVisibleRows = rect.height / nHeightRow;
if ( nVisibleRows < 1 )
nVisibleRows = 1;
}
public void componentMoved ( ComponentEvent event ) {
}
public void componentShown ( ComponentEvent event ) {
}
public void componentHidden ( ComponentEvent event ) {
}
private void init () throws Exception {
this.setFont ( fontItem );
this.computeHeights ();
this.setBackground ( Color.white );
this.addMouseListener ( this );
this.addKeyListener ( this );
this.addFocusListener ( this );
this.addComponentListener ( this );
}
private int getPreferredColumnWidth ( int nColumnIndex ) {
int i;
int nCount;
int nWidth;
int nWidthMax;
Font font;
FontMetrics fontMetrics;
String strValue;
ColumnData columnData;
RowData rowData;
columnData = (ColumnData) vectorColumns.elementAt ( nColumnIndex );
// header
fontMetrics = this.getFontMetrics ( fontHeader );
strValue = columnData.strName;
nWidthMax = fontMetrics.stringWidth ( strValue ) + 2 * MARGIN_HORZ + 2;
// rows
font = this.getFont ();
fontMetrics = this.getFontMetrics ( font );
nCount = vectorRows.size ();
for ( i = 0; i < nCount; i++ ) {
rowData = (RowData) vectorRows.elementAt ( i );
strValue = rowData.getValue(nColumnIndex).toString();
nWidth = fontMetrics.stringWidth ( strValue ) + 2 * MARGIN_HORZ;
nWidthMax = Math.max ( nWidthMax, nWidth );
}
return ( nWidthMax );
}
private void computeHeights () {
Font font;
FontMetrics fontMetrics;
fontMetrics = this.getFontMetrics ( fontHeader );
nHeightHeader = fontMetrics.getHeight ();
nHeightHeader += 2; // shadow lines
nHeightHeader += 2 * MARGIN_VERT;
font = this.getFont ();
fontMetrics = this.getFontMetrics ( font );
nHeightRow = fontMetrics.getHeight ();
nHeightRow += 2 * MARGIN_VERT;
}
private void drawDottedLine ( Graphics graphics, int nX1, int nY1, int nX2, int nY2 ) {
int nX, nY;
double dDiv;
if ( nX1 == nX2 && nY1 == nY2 ) {
drawDot ( graphics, nX1, nY1 );
return;
}
if ( nX1 > nX2 ) {
nX = nX1;
nX1 = nX2;
nX2 = nX;
}
if ( nY1 > nY2 ) {
nY = nY1;
nY1 = nY2;
nY2 = nY;
}
if ( nX2 - nX1 > nY2 - nY1 ) {
dDiv = (double)(nY2 - nY1) / (nX2 - nX1);
for ( nX = nX1; nX <= nX2; nX++ ) {
nY = (int)Math.rint ( nY1 + (nX - nX1) * dDiv );
drawDot ( graphics, nX, nY );
}
}
else {
dDiv = (nX2 - nX1) / (nY2 - nY1);
for ( nY = nY1; nY <= nY2; nY++ ) {
nX = (int)Math.rint ( nX1 + (nY - nY1) * dDiv );
drawDot ( graphics, nX, nY );
}
}
}
private void drawDot ( Graphics graphics, int nX, int nY )
{
if ( (nX + nY) % 2 == 0 )
graphics.drawLine ( nX, nY, nX, nY );
}
}
class ColumnData {
String strName;
int nType;
int nWidth = 120;
public ColumnData ( String strName, int nType ) {
this.strName = strName;
this.nType = nType;
}
public String toString () {
return ( strName );
}
}
class RowData {
private Vector vectorValues = new Vector ();
public RowData ( Object arrValues[] ) {
int i;
int nCount;
if ( arrValues != null ) {
nCount = arrValues.length;
for ( i = 0; i < nCount; i++ )
vectorValues.addElement ( arrValues[i] );
}
}
void setValue ( Object value, int nColumn ) {
vectorValues.setElementAt ( value, nColumn );
}
Object getValue ( int nColumn ) {
Object value;
value = vectorValues.elementAt ( nColumn );
return ( value );
}
}