下面列出了javax.swing.JTable#getSelectedColumns ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* Checks whether at least one selected cell is editable.
*/
protected boolean isSelectionEditable( JTable table ) {
if( table.getRowSelectionAllowed() ) {
int columnCount = table.getColumnCount();
int[] selectedRows = table.getSelectedRows();
for( int selectedRow : selectedRows ) {
for( int column = 0; column < columnCount; column++ ) {
if( table.isCellEditable( selectedRow, column ) )
return true;
}
}
}
if( table.getColumnSelectionAllowed() ) {
int rowCount = table.getRowCount();
int[] selectedColumns = table.getSelectedColumns();
for( int selectedColumn : selectedColumns ) {
for( int row = 0; row < rowCount; row++ ) {
if( table.isCellEditable( row, selectedColumn ) )
return true;
}
}
}
return false;
}
/**
* Reads clipboard data and converts it into supported format and fills the
* tmodel cells
*
* @param table the target tmodel
*/
private static void pasteFromClipboard(JTable table) {
int startRow = table.getSelectedRows()[0];
int startCol = table.getSelectedColumns()[0];
String pasteString;
try {
pasteString = (String) (CLIPBOARD.getContents(CLIPBOARD).getTransferData(DataFlavor.stringFlavor));
} catch (UnsupportedFlavorException | IOException ex) {
Logger.getLogger(JtableUtils.class.getName()).log(Level.SEVERE, null, ex);
return;
}
String[] lines = pasteString.split(LINE_BREAK);
for (int i = 0; i < lines.length; i++) {
String[] cells = lines[i].split(CELL_BREAK);
if (table.getRowCount() <= startRow + i) {
((DefaultTableModel) table.getModel()).addRow(nullRow);
}
for (int j = 0; j < cells.length; j++) {
if (table.getColumnCount() > startCol + j) {
if (table.isCellEditable(startRow + i, startCol + j)) {
table.setValueAt(cells[j], startRow + i, startCol + j);
}
}
}
}
}
@Override
protected Transferable createTransferable(JComponent source) {
JTable table = (JTable) source;
if (table.getModel() instanceof TestDataModel) {
TestDataModel tdm = (TestDataModel) table.getModel();
TestDataDetail td = new TestDataDetail();
td.setSheetName(tdm.getName());
for (int col : table.getSelectedColumns()) {
if (col > 3) {
td.getColumnNames().add(table.getColumnName(col));
}
}
return new TransferableNode(td, DataFlavors.TESTDATA_FLAVOR);
}
return null;
}
/**
* returns a JLabel that is highlighted if the row is selected.
*
* @param table
* @param value
* @param isSelected
* @param hasFocus
* @param row
* @param column
* @return
*/
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
if(table.isRowSelected(row)) {
int[] i = table.getSelectedColumns();
if((i.length==1)&&(table.convertColumnIndexToModel(i[0])==0)) {
setBackground(PANEL_BACKGROUND);
} else {
setBackground(Color.gray);
}
} else {
setBackground(PANEL_BACKGROUND);
}
if(value==null){ // added by W. Christian
setText("???"); //$NON-NLS-1$
}else{
setText(value.toString());
}
return this;
}
public static void pasteFromAbove(JTable table) {
int startRow = table.getSelectedRows()[0];
int[] cols = table.getSelectedColumns();
for (int col : cols) {
table.setValueAt(table.getValueAt(startRow - 1, col), startRow, col);
}
}
/**
* clear selection by setting empty values
*
* @param table to be cleared
*/
private static void ClearSelection(JTable table) {
int[] srow = table.getSelectedRows();
int[] scol = table.getSelectedColumns();
int lastSrow = srow.length;
int lastScol = scol.length;
for (int i = 0; i < lastSrow; i++) {
for (int j = 0; j < lastScol; j++) {
if (table.isCellEditable(srow[i], scol[j])) {
table.setValueAt("", srow[i], scol[j]);
}
}
}
}
/**
* Reads the cell values of selected cells of the <code>tmodel</code> and
* uploads into clipboard in supported format
*
* @param isCut CUT flag,<code>true</code> for CUT and <code>false</code>
* for COPY
* @param table the source for the action
* @see #escape(java.lang.Object)
*/
private static void copyToClipboard(boolean isCut, JTable table) {
try {
int numCols = table.getSelectedColumnCount();
int numRows = table.getSelectedRowCount();
int[] rowsSelected = table.getSelectedRows();
int[] colsSelected = table.getSelectedColumns();
if (numRows != rowsSelected[rowsSelected.length - 1] - rowsSelected[0] + 1 || numRows != rowsSelected.length
|| numCols != colsSelected[colsSelected.length - 1] - colsSelected[0] + 1 || numCols != colsSelected.length) {
JOptionPane.showMessageDialog(null, "Invalid Selection", "Invalid Selection", JOptionPane.ERROR_MESSAGE);
return;
}
StringBuilder excelStr = new StringBuilder();
for (int i = 0; i < numRows; i++) {
for (int j = 0; j < numCols; j++) {
excelStr.append(escape(table.getValueAt(rowsSelected[i], colsSelected[j])));
if (isCut) {
if (table.isCellEditable(rowsSelected[i], colsSelected[j])) {
table.setValueAt("", rowsSelected[i], colsSelected[j]);
}
}
if (j < numCols - 1) {
excelStr.append(CELL_BREAK);
}
}
if (i < numRows - 1) {
excelStr.append(LINE_BREAK);
}
}
if (!excelStr.toString().isEmpty()) {
StringSelection sel = new StringSelection(excelStr.toString());
CLIPBOARD.setContents(sel, sel);
}
} catch (HeadlessException ex) {
Logger.getLogger(JtableUtils.class.getName()).log(Level.SEVERE, null, ex);
}
}
public static void copyToClipboard(JTable table, boolean isCut) {
int numCols = table.getSelectedColumnCount();
int numRows = table.getSelectedRowCount();
int[] rowsSelected = table.getSelectedRows();
int[] colsSelected = table.getSelectedColumns();
if (numRows != rowsSelected[rowsSelected.length - 1] - rowsSelected[0] + 1 || numRows != rowsSelected.length
|| numCols != colsSelected[colsSelected.length - 1] - colsSelected[0] + 1 || numCols != colsSelected.length) {
Logger.getLogger(XTableUtils.class.getName()).info("Invalid Copy Selection");
return;
}
if (table.getModel() instanceof UndoRedoModel) {
((UndoRedoModel) table.getModel()).startGroupEdit();
}
StringBuilder excelStr = new StringBuilder();
for (int i = 0; i < numRows; i++) {
for (int j = 0; j < numCols; j++) {
excelStr.append(escape(table.getValueAt(rowsSelected[i], colsSelected[j])));
if (isCut) {
table.setValueAt("", rowsSelected[i], colsSelected[j]);
}
if (j < numCols - 1) {
excelStr.append(CELL_BREAK);
}
}
excelStr.append(LINE_BREAK);
}
if (table.getModel() instanceof UndoRedoModel) {
((UndoRedoModel) table.getModel()).stopGroupEdit();
}
StringSelection sel = new StringSelection(excelStr.toString());
CLIPBOARD.setContents(sel, sel);
}
public static void pasteFromClipboard(JTable table) {
int startRow = table.getSelectedRows()[0];
int startCol = table.getSelectedColumns()[0];
String pasteString;
try {
pasteString = (String) (CLIPBOARD.getContents(null).getTransferData(DataFlavor.stringFlavor));
} catch (Exception e) {
Logger.getLogger(XTableUtils.class.getName()).log(Level.WARNING, "Invalid Paste Type", e);
return;
}
if (table.getModel() instanceof UndoRedoModel) {
((UndoRedoModel) table.getModel()).startGroupEdit();
}
String[] lines = pasteString.split(LINE_BREAK);
for (int i = 0; i < lines.length; i++) {
String[] cells = lines[i].split(CELL_BREAK);
for (int j = 0; j < cells.length; j++) {
if (table.getRowCount() <= startRow + i) {
if (table.getModel() instanceof DataModel) {
if (!((DataModel) table.getModel()).addRow()) {
return;
}
}
}
if (table.getRowCount() > startRow + i && table.getColumnCount() > startCol + j) {
table.setValueAt(cells[j], startRow + i, startCol + j);
}
}
}
if (table.getModel() instanceof UndoRedoModel) {
((UndoRedoModel) table.getModel()).stopGroupEdit();
}
}
public static void clearSelectedTable(JTable table) {
int[] columns = table.getSelectedColumns();
int[] rows = table.getSelectedRows();
for (int i = 0; i < rows.length; i++) {
for (int j = 0; j < columns.length; j++) {
table.setValueAt("", rows[i], columns[j]);
}
}
}
/**
* returns a JLabel that is highlighted if the row is selected.
*
* @param table
* @param value
* @param isSelected
* @param hasFocus
* @param row
* @param column
* @return
*/
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
if(table.isRowSelected(row)) {
int[] i = table.getSelectedColumns();
if((i.length==1)&&(table.convertColumnIndexToModel(i[0])==0)) {
setBackground(PANEL_BACKGROUND);
} else {
setBackground(Color.gray);
}
} else {
setBackground(PANEL_BACKGROUND);
}
setText(value.toString());
return this;
}
private String getSelection() {
JTable table = (JTable) component;
boolean rowSelectionAllowed = table.getRowSelectionAllowed();
boolean columnSelectionAllowed = table.getColumnSelectionAllowed();
if (!rowSelectionAllowed && !columnSelectionAllowed) {
return null;
}
int[] rows = table.getSelectedRows();
int[] columns = table.getSelectedColumns();
int rowCount = table.getRowCount();
int columnCount = table.getColumnCount();
if (rows.length == rowCount && columns.length == columnCount) {
return "all";
}
if (rows.length == 0 && columns.length == 0) {
return "";
}
StringBuffer text = new StringBuffer();
text.append("rows:[");
for (int i = 0; i < rows.length; i++) {
text.append(rows[i]);
if (i != rows.length - 1) {
text.append(",");
}
}
text.append("],");
text.append("columns:[");
for (int i = 0; i < columns.length; i++) {
String columnName = getColumnName(columns[i]);
text.append(escape(columnName));
if (i != columns.length - 1) {
text.append(",");
}
}
text.append("]");
return text.toString();
}
private void selectClickedCell(final MouseEvent e) {
Object source = e.getSource();
if (source instanceof JTable) {
JTable jSelectTable = (JTable) source;
Point point = e.getPoint();
if (!jSelectTable.getVisibleRect().contains(point)) { //Ignore clickes outside table
return;
}
int clickedRow = jSelectTable.rowAtPoint(point);
int clickedColumn = jSelectTable.columnAtPoint(point);
//Rows
boolean clickInRowsSelection;
if (jSelectTable.getRowSelectionAllowed()) { //clicked in selected rows?
clickInRowsSelection = false;
int[] selectedRows = jSelectTable.getSelectedRows();
for (int i = 0; i < selectedRows.length; i++) {
if (selectedRows[i] == clickedRow) {
clickInRowsSelection = true;
break;
}
}
} else { //Row selection not allowed - all rows selected
clickInRowsSelection = true;
}
//Column
boolean clickInColumnsSelection;
if (jSelectTable.getColumnSelectionAllowed()) { //clicked in selected columns?
clickInColumnsSelection = false;
int[] selectedColumns = jSelectTable.getSelectedColumns();
for (int i = 0; i < selectedColumns.length; i++) {
if (selectedColumns[i] == clickedColumn) {
clickInColumnsSelection = true;
break;
}
}
} else { //Column selection not allowed - all columns selected
clickInColumnsSelection = true;
}
//Clicked outside selection, select clicked cell
if ( (!clickInRowsSelection || !clickInColumnsSelection) && clickedRow >= 0 && clickedColumn >= 0) {
jSelectTable.setRowSelectionInterval(clickedRow, clickedRow);
jSelectTable.setColumnSelectionInterval(clickedColumn, clickedColumn);
}
}
}
private static void copy(JTable jTable) {
//Rows
int[] rows;
if (jTable.getRowSelectionAllowed()) { //Selected rows
rows = jTable.getSelectedRows();
} else { //All rows (if row selection is not allowed)
rows = new int[jTable.getRowCount()];
for (int i = 0; i < jTable.getRowCount(); i++) {
rows[i] = i;
}
}
//Columns
int[] columns;
if (jTable.getColumnSelectionAllowed()) { //Selected columns
columns = jTable.getSelectedColumns();
} else { //All columns (if column selection is not allowed)
columns = new int[jTable.getColumnCount()];
for (int i = 0; i < jTable.getColumnCount(); i++) {
columns[i] = i;
}
}
StringBuilder tableText = new StringBuilder(); //Table text buffer
String separatorText = ""; //Separator text buffer (is never added to, only set for each separator)
int rowCount = 0; //used to find last row
for (int row : rows) {
rowCount++; //count rows
StringBuilder rowText = new StringBuilder(); //Row text buffer
boolean firstColumn = true; //used to find first column
for (int column : columns) {
//Get value
Object value = jTable.getValueAt(row, column);
//Handle Separator
if (value instanceof SeparatorList.Separator) {
SeparatorList.Separator<?> separator = (SeparatorList.Separator) value;
Object object = separator.first();
if (object instanceof CopySeparator) {
CopySeparator copySeparator = (CopySeparator) object;
separatorText = copySeparator.getCopyString();
}
break;
}
//Add tab separator (except for first column)
if (firstColumn) {
firstColumn = false;
} else {
rowText.append("\t");
}
//Add value
if (value != null) { //Ignore null
//Format value to displayed value
if (value instanceof Float) {
rowText.append(Formater.floatFormat(value));
} else if (value instanceof Double) {
rowText.append(Formater.doubleFormat(value));
} else if (value instanceof Integer) {
rowText.append(Formater.integerFormat(value));
} else if (value instanceof Long) {
rowText.append(Formater.longFormat(value));
} else if (value instanceof Date) {
rowText.append(Formater.columnDate(value));
} else if (value instanceof HierarchyColumn) {
HierarchyColumn hierarchyColumn = (HierarchyColumn) value;
rowText.append(hierarchyColumn.getExport());
} else {
rowText.append(value.toString()); //Default
}
}
}
//Add
if (rowText.length() > 0 || (!separatorText.isEmpty() && rowCount == rows.length)) {
tableText.append(separatorText); //Add separator text (will be empty for normal tables)
if (rowText.length() > 0 && !separatorText.isEmpty()) { //Add tab separator (if needed)
tableText.append("\t");
}
tableText.append(rowText.toString()); //Add row text (will be empty if only copying sinlge separator)
if (rowCount != rows.length) {
tableText.append("\r\n");
} //Add end line
}
}
toClipboard(tableText.toString()); //Send it all to the clipboard
}