首先声明这些内容都是借鑒来的稍微改动了一下
主要就是三个应用类ColumnGroup GroupableTableHeaderGroupableTableHeaderU和一个示例类GroupableHeaderExample
ColumnGroup类主要负责多表头的构建
import javaawtComponent;
import javaawtDimension;
import javautilEnumeration;
import javautilVector;
import javaxswingJLabel;
import javaxswingJTable;
import javaxswingUIManager;
import javaxswingtableDefaultTableCellRenderer;
import javaxswingtableJTableHeader;
import javaxswingtableTableCellRenderer;
import javaxswingtableTableColumn;
public class ColumnGroup {
protected TableCellRenderer renderer;
protected Vector v;
protected String text;
protected int margin = ;
public ColumnGroup(String text) {
this(null text);
}
public ColumnGroup(TableCellRenderer renderer String text) {
if (renderer == null) {
thisrenderer = new DefaultTableCellRenderer() {
public Component getTableCellRendererComponent(JTable table
Object value boolean isSelected boolean hasFocus
int row int column) {
JTableHeader header = tablegetTableHeader();
if (header != null) {
setForeground(headergetForeground());
setBackground(headergetBackground());
setFont(headergetFont());
}
setHorizontalAlignment(JLabelCENTER);
thissetText((value == null) ? : valuetoString());
setBorder(UIManagergetBorder(TableHeadercellBorder));
return this;
}
};
} else {
thisrenderer = renderer;
}
thistext = text;
v = new Vector();
}
/**
* @param obj
*TableColumn or ColumnGroup
*/
public void add(Object obj) {
if (obj == null) {
return;
}
vaddElement(obj);
}
/**
* @param c
*TableColumn
* @param v
*ColumnGroups
*/
public Vector getColumnGroups(TableColumn c Vector g) {
gaddElement(this);
if (ntains(c))
return g;
Enumeration enumeration = velements();
while (enumerationhasMoreElements()) {
Object obj = enumerationnextElement();
if (obj instanceof ColumnGroup) {
Vector groups = (Vector) ((ColumnGroup) obj)getColumnGroups(c
(Vector) gclone());
if (groups != null)
return groups;
}
}
return null;
}
public TableCellRenderer getHeaderRenderer() {
return renderer;
}
public Object getHeaderValue() {
return text;
}
public int getSize() {
return v == null ? : vsize();
}
public Dimension getSize(JTable table) {
Component comp = renderergetTableCellRendererComponent(table
getHeaderValue() false false );
int height = compgetPreferredSize()height;
int width = ;
Enumeration enumeration = velements();
while (enumerationhasMoreElements()) {
Object obj = enumerationnextElement();
if (obj instanceof TableColumn) {
TableColumn aColumn = (TableColumn) obj;
width += aColumngetWidth();
width += margin;
} else {
width += ((ColumnGroup) obj)getSize(table)width;
}
}
return new Dimension(width height);
}
/**
*
* 创建日期:( ::)
*
* @return javalangString
*/
public javalangString getText() {
return text;
}
/**
* 列表头中删除Column 创建日期:( ::)
*/
public boolean removeColumn(ColumnGroup ptg TableColumn tc) {
boolean retFlag = false;
if (tc != null) {
for (int i = ; i < ptg.v.size(); i++) {
Object tmpObj = ptg.v.get(i);
if (tmpObj instanceof ColumnGroup) {
retFlag = removeColumn((ColumnGroup) tmpObj, tc);
// 如果找到返回
if (retFlag)
break;
} else if (tmpObj instanceof TableColumn) {
// 判断是否查找的对象
if (tmpObj == tc) {
ptg.v.remove(i);
retFlag = true;
break;
}
}
}
}
return retFlag;
}
/**
* 列表头中删除ColumnGrp 删除返回true,否则返回false; 创建日期:(2002-9-25 15:49:00)
*/
public boolean removeColumnGrp(ColumnGroup ptg, ColumnGroup tg) {
boolean retFlag = false;
if (tg != null) {
for (int i = 0; i < ptg.v.size(); i++) {
Object tmpObj = ptg.v.get(i);
if (tmpObj instanceof ColumnGroup) {
// 判断是否查找的对象
if (tmpObj == tg) {
ptg.v.remove(i);
retFlag = true;
break;
} else {
retFlag = removeColumnGrp((ColumnGroup) tmpObj, tg);
// 如果找到返回
if (retFlag)
break;
}
} else if (tmpObj instanceof TableColumn) {
break;
}
}
}
return retFlag;
}
public void setColumnMargin(int margin) {
this.margin = margin;
Enumeration enumeration = v.elements();
while (enumeration.hasMoreElements()) {
Object obj = enumeration.nextElement();
if (obj instanceof ColumnGroup) {
((ColumnGroup) obj).setColumnMargin(margin);
}
}
}
public void setHeaderRenderer(TableCellRenderer renderer) {
if (renderer != null) {
this.renderer = renderer;
}
}
/**
*
* 创建日期:(2003-7-14 10:53:26)
*
* @param newText
*java.lang.String
*/
public void setText(java.lang.String newText) {
text = newText;
}
}
2、GroupableHeader继承自JTableHeader，为多表头结构的管理者
import java.util.Enumeration;
import java.util.Vector;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
/**
* GroupableTableHeader
* @author flyx
*/
public class GroupableTableHeader extends JTableHeader {
private static final String uiClassID = "GroupableTableHeaderUI";
protected Vector columnGroups = null;
public GroupableTableHeader(TableColumnModel model) {
super(model);
setUI(new GroupableTableHeaderUI());
setReorderingAllowed(false);
setRequestFocusEnabled(false);
}
public void addColumnGroup(ColumnGroup g) {
if (columnGroups == null) {
columnGroups = new Vector();
}
columnGroups.addElement(g);
}
/**
*
* 创建日期:(2001-8-31 15:54:29)
*/
public void clearColumnGroups() {
columnGroups = null;
}
public ColumnGroup[] getColumnGroups() {
ColumnGroup[] retg=null;
if (columnGroups.size()>0) {
retg=new ColumnGroup[columnGroups.size()];
pyInto(retg);
}
return retg;
}
public Enumeration getColumnGroups(TableColumn col) {
if (columnGroups == null)
return null;
Enumeration enum = columnGroups.elements();
while (enum.hasMoreElements()) {
ColumnGroup cGroup = (ColumnGroup) enum.nextElement();
Vector v_ret = (Vector) cGroup.getColumnGroups(col, new Vector());
if (v_ret != null) {
return v_ret.elements();
}
}
return null;
}
/**
* Identifies whether or not this component can receive the focus.
* A disabled button, for example, would return false.
