Java Code Examples for javax.swing.JTable#isCellEditable()

/**
 * 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;
}
 

private void validate(int viewRow, int viewCol) {
	JTable table = (JTable) getComponent();
	try {
		int row = table.convertRowIndexToModel(viewRow);
		int col = table.convertColumnIndexToModel(viewCol);
		TableModel model = table.getModel();
		if (row >= 0 && row < model.getRowCount() && col >= 0 && col < model.getColumnCount()) {
			if (table.isCellEditable(viewRow, viewCol)) {
				return;
			} else {
				throw new NoSuchElementException(
						"The cell is not editable on JTable: (" + viewRow + ", " + viewCol + ")", null);
			}
		}
	} catch (IndexOutOfBoundsException e) {
	}
	throw new NoSuchElementException("Invalid row/col for JTable: (" + viewRow + ", " + viewCol + ")", null);
}
 

/**
 * 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
public Component getTableCellRendererComponent(JTable table, Object value,
        boolean isSelected, boolean hasFocus, int row, int column) {
    if (isSelected) {
        setForeground(table.getSelectionForeground());
        setBackground(table.getSelectionBackground());
    } else {
        setForeground(table.getForeground());
        setBackground(table.getBackground());
    }
    setFont(table.getFont());
    if (hasFocus) {
        setBorder(UIManager.getBorder("Table.focusCellHighlightBorder"));
        if (table.isCellEditable(row, column)) {
            setForeground(UIManager.getColor("Table.focusCellForeground"));
            setBackground(UIManager.getColor("Table.focusCellBackground"));
        }
    } else {
        setBorder(new EmptyBorder(1, 2, 1, 2));
    }
    setText((value == null) ? "" : value.toString());
    return this;
}
 

public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
  super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
  boolean editable = table.isCellEditable(row, column);
  setEnabled(editable);
  ArrayTable arrayTable = (ArrayTable) table;
  DecimalFormat cellFormat = arrayTable.formatDictionary.get(column); // does column have a special format?
  if(cellFormat==null) {
    cellFormat = arrayTable.defaultFormat; // use default format
  }
  if(value==null) {
    setText("");                           //$NON-NLS-1$
  } else if(cellFormat==null) {            // default format not set
    setText(value.toString());
  } else {
    try {
      setText(cellFormat.format(value));
    } catch(IllegalArgumentException ex) { // convert to string if value cannot be formatted
      setText(value.toString());
    }
  }
  setBorder(new CellBorder(new Color(224, 224, 224)));
  return this;
}
 

/**
 * 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 Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
		int row, int column) {
	if (isSelected) {
		super.setForeground(table.getSelectionForeground());
		super.setBackground(table.getSelectionBackground());
	} else {
		super.setForeground((unselectedForeground != null) ? unselectedForeground : table.getForeground());
		super.setBackground((unselectedBackground != null) ? unselectedBackground : table.getBackground());
	}

	setFont(table.getFont());

	if (hasFocus) {
		setBorder(UIManager.getBorder("Table.focusCellHighlightBorder"));

		if (table.isCellEditable(row, column)) {
			super.setForeground(UIManager.getColor("Table.focusCellForeground"));
			super.setBackground(UIManager.getColor("Table.focusCellBackground"));
		}
	} else {
		setBorder(noFocusBorder);
	}
	setValue(value);
	Color back = getBackground();
	boolean colorMatch = (back != null) && (back.equals(table.getBackground())) && table.isOpaque();
	setOpaque(!colorMatch);
	return this;
}
 

@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
                                               int row, int column) {
    final boolean enabled = table.isEnabled();
    setText((String) value);

    if (isSelected) {
        super.setForeground(table.getSelectionForeground());
        super.setBackground(table.getSelectionBackground());
    } else if (!enabled) {
        super.setForeground(UIManager.getColor("TextField.inactiveForeground"));
        super.setBackground(table.getBackground());
    } else {
        super.setForeground(table.getForeground());
        super.setBackground(table.getBackground());
    }

    setFont(table.getFont());

    if (hasFocus) {
        setBorder(UIManager.getBorder("Table.focusCellHighlightBorder"));
        if (table.isCellEditable(row, column)) {
            super.setForeground(UIManager.getColor("Table.focusCellForeground"));
            super.setBackground(UIManager.getColor("Table.focusCellBackground"));
        }
    } else {
        setBorder(noFocusBorder);
    }

    setValue(value);

    return this;
}
 

@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
		int row, int column) {

	if (table == null) {
		return this;
	}

	lbl.setFont(table.getFont().deriveFont(Font.BOLD));

	Color fg = null;
	Color bg = null;

	JTable.DropLocation dropLocation = table.getDropLocation();
	if (dropLocation != null && !dropLocation.isInsertRow() && !dropLocation.isInsertColumn()
			&& dropLocation.getRow() == row && dropLocation.getColumn() == column) {
		fg = UIManager.getColor("Table.dropCellForeground");
		bg = UIManager.getColor("Table.dropCellBackground");
		isSelected = true;
	}

	if (isSelected) {
		super.setForeground(fg == null ? table.getSelectionForeground() : fg);
		super.setBackground(bg == null ? table.getSelectionBackground() : bg);
	} else {
		Color background = unselectedBackground != null ? unselectedBackground : table.getBackground();
		if (background == null || background instanceof javax.swing.plaf.UIResource) {
			Color alternateColor = UIManager.getColor("Table.alternateRowColor");
			if (alternateColor != null && row % 2 != 0) {
				background = alternateColor;
			}
		}
		super.setForeground(unselectedForeground != null ? unselectedForeground : table.getForeground());
		super.setBackground(background);
	}

	setFont(table.getFont());

	if (hasFocus) {
		Border border = null;
		if (isSelected) {
			border = UIManager.getBorder("Table.focusSelectedCellHighlightBorder");
		}
		if (border == null) {
			border = UIManager.getBorder("Table.focusCellHighlightBorder");
		}
		setBorder(border);

		if (!isSelected && table.isCellEditable(row, column)) {
			Color col;
			col = UIManager.getColor("Table.focusCellForeground");
			if (col != null) {
				super.setForeground(col);
			}
			col = UIManager.getColor("Table.focusCellBackground");
			if (col != null) {
				super.setBackground(col);
			}
		}
	} else {
		setBorder(getNoFocusBorder());
	}

	return this;
}