/*
* @(#)BasicTableUI.java 1.144 05/05/03
*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.swing.plaf.basic;
import java.awt.*;
import java.awt.datatransfer.*;
import java.awt.dnd.*;
import java.awt.event.*;
import java.util.Enumeration;
import java.util.EventObject;
import java.util.Hashtable;
import java.util.TooManyListenersException;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.plaf.*;
import javax.swing.text.*;
import javax.swing.table.*;
import javax.swing.plaf.basic.DragRecognitionSupport.BeforeDrag;
import com.sun.java.swing.SwingUtilities2;
import static com.sun.java.swing.SwingUtilities2.DRAG_FIX;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import sun.swing.DefaultLookup;
import sun.swing.UIAction;
/**
* BasicTableUI implementation
*
* @version 1.144 05/03/05
* @author Philip Milne
* @author Shannon Hickey (improved drag recognition)
*/
public class BasicTableUI extends TableUI
{
//
// Instance Variables
//
// The JTable that is delegating the painting to this UI.
protected JTable table;
protected CellRendererPane rendererPane;
// Listeners that are attached to the JTable
protected KeyListener keyListener;
protected FocusListener focusListener;
protected MouseInputListener mouseInputListener;
private Handler handler;
/**
* Local cache of Table's client property "Table.isFileList"
*/
private boolean isFileList = false;
//
// Helper class for keyboard actions
//
private static class Actions extends UIAction {
private static final String CANCEL_EDITING = "cancel";
private static final String SELECT_ALL = "selectAll";
private static final String CLEAR_SELECTION = "clearSelection";
private static final String START_EDITING = "startEditing";
private static final String NEXT_ROW = "selectNextRow";
private static final String NEXT_ROW_CELL = "selectNextRowCell";
private static final String NEXT_ROW_EXTEND_SELECTION =
"selectNextRowExtendSelection";
private static final String NEXT_ROW_CHANGE_LEAD =
"selectNextRowChangeLead";
private static final String PREVIOUS_ROW = "selectPreviousRow";
private static final String PREVIOUS_ROW_CELL = "selectPreviousRowCell";
private static final String PREVIOUS_ROW_EXTEND_SELECTION =
"selectPreviousRowExtendSelection";
private static final String PREVIOUS_ROW_CHANGE_LEAD =
"selectPreviousRowChangeLead";
private static final String NEXT_COLUMN = "selectNextColumn";
private static final String NEXT_COLUMN_CELL = "selectNextColumnCell";
private static final String NEXT_COLUMN_EXTEND_SELECTION =
"selectNextColumnExtendSelection";
private static final String NEXT_COLUMN_CHANGE_LEAD =
"selectNextColumnChangeLead";
private static final String PREVIOUS_COLUMN = "selectPreviousColumn";
private static final String PREVIOUS_COLUMN_CELL =
"selectPreviousColumnCell";
private static final String PREVIOUS_COLUMN_EXTEND_SELECTION =
"selectPreviousColumnExtendSelection";
private static final String PREVIOUS_COLUMN_CHANGE_LEAD =
"selectPreviousColumnChangeLead";
private static final String SCROLL_LEFT_CHANGE_SELECTION =
"scrollLeftChangeSelection";
private static final String SCROLL_LEFT_EXTEND_SELECTION =
"scrollLeftExtendSelection";
private static final String SCROLL_RIGHT_CHANGE_SELECTION =
"scrollRightChangeSelection";
private static final String SCROLL_RIGHT_EXTEND_SELECTION =
"scrollRightExtendSelection";
private static final String SCROLL_UP_CHANGE_SELECTION =
"scrollUpChangeSelection";
private static final String SCROLL_UP_EXTEND_SELECTION =
"scrollUpExtendSelection";
private static final String SCROLL_DOWN_CHANGE_SELECTION =
"scrollDownChangeSelection";
private static final String SCROLL_DOWN_EXTEND_SELECTION =
"scrollDownExtendSelection";
private static final String FIRST_COLUMN =
"selectFirstColumn";
private static final String FIRST_COLUMN_EXTEND_SELECTION =
"selectFirstColumnExtendSelection";
private static final String LAST_COLUMN =
"selectLastColumn";
private static final String LAST_COLUMN_EXTEND_SELECTION =
"selectLastColumnExtendSelection";
private static final String FIRST_ROW =
"selectFirstRow";
private static final String FIRST_ROW_EXTEND_SELECTION =
"selectFirstRowExtendSelection";
private static final String LAST_ROW =
"selectLastRow";
private static final String LAST_ROW_EXTEND_SELECTION =
"selectLastRowExtendSelection";
// add the lead item to the selection without changing lead or anchor
private static final String ADD_TO_SELECTION = "addToSelection";
// toggle the selected state of the lead item and move the anchor to it
private static final String TOGGLE_AND_ANCHOR = "toggleAndAnchor";
// extend the selection to the lead item
private static final String EXTEND_TO = "extendTo";
// move the anchor to the lead and ensure only that item is selected
private static final String MOVE_SELECTION_TO = "moveSelectionTo";
protected int dx;
protected int dy;
protected boolean extend;
protected boolean inSelection;
protected boolean forwards;
protected boolean vertically;
protected boolean toLimit;
protected int leadRow;
protected int leadColumn;
Actions(String name) {
super(name);
}
Actions(String name, int dx, int dy, boolean extend,
boolean inSelection) {
super(name);
// Actions spcifying true for "inSelection" are
// fairly sensitive to bad parameter values. They require
// that one of dx and dy be 0 and the other be -1 or 1.
// Bogus parameter values could cause an infinite loop.
// To prevent any problems we massage the params here
// and complain if we get something we can't deal with.
if (inSelection) {
this.inSelection = true;
// look at the sign of dx and dy only
dx = sign(dx);
dy = sign(dy);
// make sure one is zero, but not both
assert (dx == 0 || dy == 0) && !(dx == 0 && dy == 0);
}
this.dx = dx;
this.dy = dy;
this.extend = extend;
}
Actions(String name, boolean extend, boolean forwards,
boolean vertically, boolean toLimit) {
this(name, 0, 0, extend, false);
this.forwards = forwards;
this.vertically = vertically;
this.toLimit = toLimit;
}
private static int clipToRange(int i, int a, int b) {
return Math.min(Math.max(i, a), b-1);
}
private void moveWithinTableRange(JTable table, int dx, int dy) {
leadRow = clipToRange(leadRow+dy, 0, table.getRowCount());
leadColumn = clipToRange(leadColumn+dx, 0, table.getColumnCount());
}
private static int sign(int num) {
return (num < 0) ? -1 : ((num == 0) ? 0 : 1);
}
/**
* Called to move within the selected range of the given JTable.
* This method uses the table's notion of selection, which is
* important to allow the user to navigate between items visually
* selected on screen. This notion may or may not be the same as
* what could be determined by directly querying the selection models.
* It depends on certain table properties (such as whether or not
* row or column selection is allowed). When performing modifications,
* it is recommended that caution be taken in order to preserve
* the intent of this method, especially when deciding whether to
* query the selection models or interact with JTable directly.
*/
private boolean moveWithinSelectedRange(JTable table, int dx, int dy,
ListSelectionModel rsm, ListSelectionModel csm) {
// Note: The Actions constructor ensures that only one of
// dx and dy is 0, and the other is either -1 or 1
// find out how many items the table is showing as selected
// and the range of items to navigate through
int totalCount;
int minX, maxX, minY, maxY;
boolean rs = table.getRowSelectionAllowed();
boolean cs = table.getColumnSelectionAllowed();
// both column and row selection
if (rs && cs) {
totalCount = table.getSelectedRowCount() * table.getSelectedColumnCount();
minX = csm.getMinSelectionIndex();
maxX = csm.getMaxSelectionIndex();
minY = rsm.getMinSelectionIndex();
maxY = rsm.getMaxSelectionIndex();
// row selection only
} else if (rs) {
totalCount = table.getSelectedRowCount();
minX = 0;
maxX = table.getColumnCount() - 1;
minY = rsm.getMinSelectionIndex();
maxY = rsm.getMaxSelectionIndex();
// column selection only
} else if (cs) {
totalCount = table.getSelectedColumnCount();
minX = csm.getMinSelectionIndex();
maxX = csm.getMaxSelectionIndex();
minY = 0;
maxY = table.getRowCount() - 1;
// no selection allowed
} else {
totalCount = 0;
// A bogus assignment to stop javac from complaining
// about unitialized values. In this case, these
// won't even be used.
minX = maxX = minY = maxY = 0;
}
// For some cases, there is no point in trying to stay within the
// selected area. Instead, move outside the selection, wrapping at
// the table boundaries. The cases are:
boolean stayInSelection;
// - nothing selected
if (totalCount == 0 ||
// - one item selected, and the lead is already selected
(totalCount == 1 && table.isCellSelected(leadRow, leadColumn))) {
stayInSelection = false;
maxX = table.getColumnCount() - 1;
maxY = table.getRowCount() - 1;
// the mins are calculated like this in case the max is -1
minX = Math.min(0, maxX);
minY = Math.min(0, maxY);
} else {
stayInSelection = true;
}
// In cases where the lead is not within the search range,
// we need to bring it within one cell for the the search
// to work properly. Check these here.
leadRow = Math.min(Math.max(leadRow, minY - 1), maxY + 1);
leadColumn = Math.min(Math.max(leadColumn, minX - 1), maxX + 1);
// find the next position, possibly looping until it is selected
do {
calcNextPos(dx, minX, maxX, dy, minY, maxY);
} while (stayInSelection && !table.isCellSelected(leadRow, leadColumn));
return stayInSelection;
}
/**
* Find the next lead row and column based on the given
* dx/dy and max/min values.
*/
private void calcNextPos(int dx, int minX, int maxX,
int dy, int minY, int maxY) {
if (dx != 0) {
leadColumn += dx;
if (leadColumn > maxX) {
leadColumn = minX;
leadRow++;
if (leadRow > maxY) {
leadRow = minY;
}
} else if (leadColumn < minX) {
leadColumn = maxX;
leadRow--;
if (leadRow < minY) {
leadRow = maxY;
}
}
} else {
leadRow += dy;
if (leadRow > maxY) {
leadRow = minY;
leadColumn++;
if (leadColumn > maxX) {
leadColumn = minX;
}
} else if (leadRow < minY) {
leadRow = maxY;
leadColumn--;
if (leadColumn < minX) {
leadColumn = maxX;
}
}
}
}
public void actionPerformed(ActionEvent e) {
String key = getName();
JTable table = (JTable)e.getSource();
ListSelectionModel rsm = table.getSelectionModel();
leadRow = rsm.getLeadSelectionIndex();
ListSelectionModel csm = table.getColumnModel().getSelectionModel();
leadColumn = csm.getLeadSelectionIndex();
if (!table.getComponentOrientation().isLeftToRight()) {
if (key == SCROLL_LEFT_CHANGE_SELECTION ||
key == SCROLL_LEFT_EXTEND_SELECTION) {
forwards = true;
} else if (key == SCROLL_RIGHT_CHANGE_SELECTION ||
key == SCROLL_RIGHT_EXTEND_SELECTION) {
forwards = false;
}
}
if (key == SCROLL_LEFT_CHANGE_SELECTION || // Paging Actions
key == SCROLL_LEFT_EXTEND_SELECTION ||
key == SCROLL_RIGHT_CHANGE_SELECTION ||
key == SCROLL_RIGHT_EXTEND_SELECTION ||
key == SCROLL_UP_CHANGE_SELECTION ||
key == SCROLL_UP_EXTEND_SELECTION ||
key == SCROLL_DOWN_CHANGE_SELECTION ||
key == SCROLL_DOWN_EXTEND_SELECTION ||
key == FIRST_COLUMN ||
key == FIRST_COLUMN_EXTEND_SELECTION ||
key == FIRST_ROW ||
key == FIRST_ROW_EXTEND_SELECTION ||
key == LAST_COLUMN ||
key == LAST_COLUMN_EXTEND_SELECTION ||
key == LAST_ROW ||
key == LAST_ROW_EXTEND_SELECTION) {
if (toLimit) {
if (vertically) {
int rowCount = table.getRowCount();
this.dx = 0;
this.dy = forwards ? rowCount : -rowCount;
}
else {
int colCount = table.getColumnCount();
this.dx = forwards ? colCount : -colCount;
this.dy = 0;
}
}
else {
if (!(table.getParent().getParent() instanceof
JScrollPane)) {
return;
}
Dimension delta = table.getParent().getSize();
int start = (vertically) ? rsm.getLeadSelectionIndex() :
csm.getLeadSelectionIndex();
if (vertically) {
Rectangle r = table.getCellRect(start, 0, true);
r.y += forwards ? delta.height : -delta.height;
this.dx = 0;
int newRow = table.rowAtPoint(r.getLocation());
if (newRow == -1 && forwards) {
newRow = table.getRowCount();
}
this.dy = newRow - start;
}
else {
Rectangle r = table.getCellRect(0, start, true);
r.x += forwards ? delta.width : -delta.width;
int newColumn = table.columnAtPoint(r.getLocation());
if (newColumn == -1 && forwards) {
newColumn = table.getColumnCount();
}
this.dx = newColumn - start;
this.dy = 0;
}
}
}
if (key == NEXT_ROW || // Navigate Actions
key == NEXT_ROW_CELL ||
key == NEXT_ROW_EXTEND_SELECTION ||
key == NEXT_ROW_CHANGE_LEAD ||
key == NEXT_COLUMN ||
key == NEXT_COLUMN_CELL ||
key == NEXT_COLUMN_EXTEND_SELECTION ||
key == NEXT_COLUMN_CHANGE_LEAD ||
key == PREVIOUS_ROW ||
key == PREVIOUS_ROW_CELL ||
key == PREVIOUS_ROW_EXTEND_SELECTION ||
key == PREVIOUS_ROW_CHANGE_LEAD ||
key == PREVIOUS_COLUMN ||
key == PREVIOUS_COLUMN_CELL ||
key == PREVIOUS_COLUMN_EXTEND_SELECTION ||
key == PREVIOUS_COLUMN_CHANGE_LEAD ||
// Paging Actions.
key == SCROLL_LEFT_CHANGE_SELECTION ||
key == SCROLL_LEFT_EXTEND_SELECTION ||
key == SCROLL_RIGHT_CHANGE_SELECTION ||
key == SCROLL_RIGHT_EXTEND_SELECTION ||
key == SCROLL_UP_CHANGE_SELECTION ||
key == SCROLL_UP_EXTEND_SELECTION ||
key == SCROLL_DOWN_CHANGE_SELECTION ||
key == SCROLL_DOWN_EXTEND_SELECTION ||
key == FIRST_COLUMN ||
key == FIRST_COLUMN_EXTEND_SELECTION ||
key == FIRST_ROW ||
key == FIRST_ROW_EXTEND_SELECTION ||
key == LAST_COLUMN ||
key == LAST_COLUMN_EXTEND_SELECTION ||
key == LAST_ROW ||
key == LAST_ROW_EXTEND_SELECTION) {
if (table.isEditing() &&
!table.getCellEditor().stopCellEditing()) {
return;
}
// Unfortunately, this strategy introduces bugs because
// of the asynchronous nature of requestFocus() call below.
// Introducing a delay with invokeLater() makes this work
// in the typical case though race conditions then allow
// focus to disappear altogether. The right solution appears
// to be to fix requestFocus() so that it queues a request
// for the focus regardless of who owns the focus at the
// time the call to requestFocus() is made. The optimisation
// to ignore the call to requestFocus() when the component
// already has focus may ligitimately be made as the
// request focus event is dequeued, not before.
// boolean wasEditingWithFocus = table.isEditing() &&
// table.getEditorComponent().isFocusOwner();
boolean changeLead = false;
if (key == NEXT_ROW_CHANGE_LEAD || key == PREVIOUS_ROW_CHANGE_LEAD) {
changeLead = (rsm.getSelectionMode()
== ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
} else if (key == NEXT_COLUMN_CHANGE_LEAD || key == PREVIOUS_COLUMN_CHANGE_LEAD) {
changeLead = (csm.getSelectionMode()
== ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
}
if (changeLead) {
moveWithinTableRange(table, dx, dy);
if (dy != 0) {
// casting should be safe since the action is only enabled
// for DefaultListSelectionModel
((DefaultListSelectionModel)rsm).moveLeadSelectionIndex(leadRow);
} else {
// casting should be safe since the action is only enabled
// for DefaultListSelectionModel
((DefaultListSelectionModel)csm).moveLeadSelectionIndex(leadColumn);
}
Rectangle cellRect = table.getCellRect(leadRow, leadColumn, false);
if (cellRect != null) {
table.scrollRectToVisible(cellRect);
}
} else if (!inSelection) {
moveWithinTableRange(table, dx, dy);
table.changeSelection(leadRow, leadColumn, false, extend);
}
else {
if (moveWithinSelectedRange(table, dx, dy, rsm, csm)) {
// this is the only way we have to set both the lead
// and the anchor without changing the selection
if (rsm.isSelectedIndex(leadRow)) {
rsm.addSelectionInterval(leadRow, leadRow);
} else {
rsm.removeSelectionInterval(leadRow, leadRow);
}
if (csm.isSelectedIndex(leadColumn)) {
csm.addSelectionInterval(leadColumn, leadColumn);
} else {
csm.removeSelectionInterval(leadColumn, leadColumn);
}
Rectangle cellRect = table.getCellRect(leadRow, leadColumn, false);
if (cellRect != null) {
table.scrollRectToVisible(cellRect);
}
}
else {
table.changeSelection(leadRow, leadColumn,
false, false);
}
}
/*
if (wasEditingWithFocus) {
table.editCellAt(leadRow, leadColumn);
final Component editorComp = table.getEditorComponent();
if (editorComp != null) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
editorComp.requestFocus();
}
});
}
}
*/
} else if (key == CANCEL_EDITING) {
table.removeEditor();
} else if (key == SELECT_ALL) {
table.selectAll();
} else if (key == CLEAR_SELECTION) {
table.clearSelection();
} else if (key == START_EDITING) {
if (!table.hasFocus()) {
CellEditor cellEditor = table.getCellEditor();
if (cellEditor != null && !cellEditor.stopCellEditing()) {
return;
}
table.requestFocus();
return;
}
table.editCellAt(leadRow, leadColumn);
Component editorComp = table.getEditorComponent();
if (editorComp != null) {
editorComp.requestFocus();
}
} else if (key == ADD_TO_SELECTION) {
if (!table.isCellSelected(leadRow, leadColumn)) {
int oldAnchorRow = rsm.getAnchorSelectionIndex();
int oldAnchorColumn = csm.getAnchorSelectionIndex();
rsm.setValueIsAdjusting(true);
csm.setValueIsAdjusting(true);
table.changeSelection(leadRow, leadColumn, true, false);
rsm.setAnchorSelectionIndex(oldAnchorRow);
csm.setAnchorSelectionIndex(oldAnchorColumn);
rsm.setValueIsAdjusting(false);
csm.setValueIsAdjusting(false);
}
} else if (key == TOGGLE_AND_ANCHOR) {
table.changeSelection(leadRow, leadColumn, true, false);
} else if (key == EXTEND_TO) {
table.changeSelection(leadRow, leadColumn, false, true);
} else if (key == MOVE_SELECTION_TO) {
table.changeSelection(leadRow, leadColumn, false, false);
}
}
public boolean isEnabled(Object sender) {
String key = getName();
if (sender instanceof JTable &&
Boolean.TRUE.equals(((JTable)sender).getClientProperty("Table.isFileList"))) {
if (key == NEXT_COLUMN ||
key == NEXT_COLUMN_CELL ||
key == NEXT_COLUMN_EXTEND_SELECTION ||
key == NEXT_COLUMN_CHANGE_LEAD ||
key == PREVIOUS_COLUMN ||
key == PREVIOUS_COLUMN_CELL ||
key == PREVIOUS_COLUMN_EXTEND_SELECTION ||
key == PREVIOUS_COLUMN_CHANGE_LEAD ||
key == SCROLL_LEFT_CHANGE_SELECTION ||
key == SCROLL_LEFT_EXTEND_SELECTION ||
key == SCROLL_RIGHT_CHANGE_SELECTION ||
key == SCROLL_RIGHT_EXTEND_SELECTION ||
key == FIRST_COLUMN ||
key == FIRST_COLUMN_EXTEND_SELECTION ||
key == LAST_COLUMN ||
key == LAST_COLUMN_EXTEND_SELECTION ||
key == NEXT_ROW_CELL ||
key == PREVIOUS_ROW_CELL) {
return false;
}
}
if (key == CANCEL_EDITING && sender instanceof JTable) {
return ((JTable)sender).isEditing();
} else if (key == NEXT_ROW_CHANGE_LEAD ||
key == PREVIOUS_ROW_CHANGE_LEAD) {
// discontinuous selection actions are only enabled for
// DefaultListSelectionModel
return sender != null &&
((JTable)sender).getSelectionModel()
instanceof DefaultListSelectionModel;
} else if (key == NEXT_COLUMN_CHANGE_LEAD ||
key == PREVIOUS_COLUMN_CHANGE_LEAD) {
// discontinuous selection actions are only enabled for
// DefaultListSelectionModel
return sender != null &&
((JTable)sender).getColumnModel().getSelectionModel()
instanceof DefaultListSelectionModel;
} else if (key == ADD_TO_SELECTION && sender instanceof JTable) {
// This action is typically bound to SPACE.
// If the table is already in an editing mode, SPACE should
// simply enter a space character into the table, and not
// select a cell. Likewise, if the lead cell is already selected
// then hitting SPACE should just enter a space character
// into the cell and begin editing. In both of these cases
// this action will be disabled.
JTable table = (JTable)sender;
int leadRow = table.getSelectionModel().
getLeadSelectionIndex();
int leadCol = table.getColumnModel().getSelectionModel().
getLeadSelectionIndex();
return !(table.isEditing() || table.isCellSelected(leadRow, leadCol));
}
return true;
}
}
//
// The Table's Key listener
//
/**
* This inner class is marked "public" due to a compiler bug.
* This class should be treated as a "protected" inner class.
* Instantiate it only within subclasses of BasicTableUI.
* <p>As of Java 2 platform v1.3 this class is no longer used.
* Instead <code>JTable</code>
* overrides <code>processKeyBinding</code> to dispatch the event to
* the current <code>TableCellEditor</code>.
*/
public class KeyHandler implements KeyListener {
// NOTE: This class exists only for backward compatability. All
// its functionality has been moved into Handler. If you need to add
// new functionality add it to the Handler, but make sure this
// class calls into the Handler.
public void keyPressed(KeyEvent e) {
getHandler().keyPressed(e);
}
public void keyReleased(KeyEvent e) {
getHandler().keyReleased(e);
}
public void keyTyped(KeyEvent e) {
getHandler().keyTyped(e);
}
}
//
// The Table's focus listener
//
/**
* This inner class is marked "public" due to a compiler bug.
* This class should be treated as a "protected" inner class.
* Instantiate it only within subclasses of BasicTableUI.
*/
public class FocusHandler implements FocusListener {
// NOTE: This class exists only for backward compatability. All
// its functionality has been moved into Handler. If you need to add
// new functionality add it to the Handler, but make sure this
// class calls into the Handler.
public void focusGained(FocusEvent e) {
getHandler().focusGained(e);
}
public void focusLost(FocusEvent e) {
getHandler().focusLost(e);
}
}
//
// The Table's mouse and mouse motion listeners
//
/**
* This inner class is marked "public" due to a compiler bug.
* This class should be treated as a "protected" inner class.
* Instantiate it only within subclasses of BasicTableUI.
*/
public class MouseInputHandler implements MouseInputListener {
// NOTE: This class exists only for backward compatability. All
// its functionality has been moved into Handler. If you need to add
// new functionality add it to the Handler, but make sure this
// class calls into the Handler.
public void mouseClicked(MouseEvent e) {
getHandler().mouseClicked(e);
}
public void mousePressed(MouseEvent e) {
getHandler().mousePressed(e);
}
public void mouseReleased(MouseEvent e) {
getHandler().mouseReleased(e);
}
public void mouseEntered(MouseEvent e) {
getHandler().mouseEntered(e);
}
public void mouseExited(MouseEvent e) {
getHandler().mouseExited(e);
}
public void mouseMoved(MouseEvent e) {
getHandler().mouseMoved(e);
}
public void mouseDragged(MouseEvent e) {
getHandler().mouseDragged(e);
}
}
private class Handler implements FocusListener, MouseInputListener,
PropertyChangeListener {
// FocusListener
private void repaintLeadCell( ) {
int rc = table.getRowCount();
int cc = table.getColumnCount();
int lr = table.getSelectionModel().getLeadSelectionIndex();
int lc = table.getColumnModel().getSelectionModel().
getLeadSelectionIndex();
if (lr < 0 || lr >= rc || lc < 0 || lc >= cc) {
return;
}
Rectangle dirtyRect = table.getCellRect(lr, lc, false);
table.repaint(dirtyRect);
}
public void focusGained(FocusEvent e) {
repaintLeadCell();
}
public void focusLost(FocusEvent e) {
repaintLeadCell();
}
// KeyListener
public void keyPressed(KeyEvent e) { }
public void keyReleased(KeyEvent e) { }
public void keyTyped(KeyEvent e) {
KeyStroke keyStroke = KeyStroke.getKeyStroke(e.getKeyChar(),
e.getModifiers());
// We register all actions using ANCESTOR_OF_FOCUSED_COMPONENT
// which means that we might perform the appropriate action
// in the table and then forward it to the editor if the editor
// had focus. Make sure this doesn't happen by checking our
// InputMaps.
InputMap map = table.getInputMap(JComponent.WHEN_FOCUSED);
if (map != null && map.get(keyStroke) != null) {
return;
}
map = table.getInputMap(JComponent.
WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
if (map != null && map.get(keyStroke) != null) {
return;
}
keyStroke = KeyStroke.getKeyStrokeForEvent(e);
// The AWT seems to generate an unconsumed \r event when
// ENTER (\n) is pressed.
if (e.getKeyChar() == '\r') {
return;
}
int leadRow = table.getSelectionModel().getLeadSelectionIndex();
int leadColumn = table.getColumnModel().getSelectionModel().
getLeadSelectionIndex();
if (leadRow != -1 && leadColumn != -1 && !table.isEditing()) {
if (!table.editCellAt(leadRow, leadColumn)) {
return;
}
}
// Forwarding events this way seems to put the component
// in a state where it believes it has focus. In reality
// the table retains focus - though it is difficult for
// a user to tell, since the caret is visible and flashing.
// Calling table.requestFocus() here, to get the focus back to
// the table, seems to have no effect.
Component editorComp = table.getEditorComponent();
if (table.isEditing() && editorComp != null) {
if (editorComp instanceof JComponent) {
JComponent component = (JComponent)editorComp;
map = component.getInputMap(JComponent.WHEN_FOCUSED);
Object binding = (map != null) ? map.get(keyStroke) : null;
if (binding == null) {
map = component.getInputMap(JComponent.
WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
binding = (map != null) ? map.get(keyStroke) : null;
}
if (binding != null) {
ActionMap am = component.getActionMap();
Action action = (am != null) ? am.get(binding) : null;
if (action != null && SwingUtilities.
notifyAction(action, keyStroke, e, component,
e.getModifiers())) {
e.consume();
}
}
}
}
}
// MouseInputListener
// Component receiving mouse events during editing.
// May not be editorComponent.
protected Component dispatchComponent;
private boolean selectedOnPress;
public void mouseClicked(MouseEvent e) {}
protected void setDispatchComponent(MouseEvent e) {
Component editorComponent = table.getEditorComponent();
Point p = e.getPoint();
Point p2 = SwingUtilities.convertPoint(table, p, editorComponent);
dispatchComponent =
SwingUtilities.getDeepestComponentAt(editorComponent,
p2.x, p2.y);
}
protected boolean repostEvent(MouseEvent e) {
// Check for isEditing() in case another event has
// caused the editor to be removed. See bug #4306499.
if (dispatchComponent == null || !table.isEditing()) {
return false;
}
MouseEvent e2 = SwingUtilities.convertMouseEvent(table, e,
dispatchComponent);
dispatchComponent.dispatchEvent(e2);
return true;
}
protected void setValueIsAdjusting(boolean flag) {
table.getSelectionModel().setValueIsAdjusting(flag);
table.getColumnModel().getSelectionModel().
setValueIsAdjusting(flag);
}
private boolean shouldIgnore0(MouseEvent e) {
return e.isConsumed() || SwingUtilities2.shouldIgnore(e, table);
}
public void mousePressed(MouseEvent e) {
if (e.isConsumed()) {
selectedOnPress = false;
return;
}
selectedOnPress = true;
adjustFocusAndSelection(e);
}
void adjustFocusAndSelection(MouseEvent e) {
if (shouldIgnore0(e)) {
return;
}
Point p = e.getPoint();
int row = table.rowAtPoint(p);
int column = table.columnAtPoint(p);
// Fix for 4835633
if (pointOutsidePrefSize(table, row, column, p)) {
// If shift is down in multi-select, we should just return.
// For single select or non-shift-click, clear the selection
if (e.getID() == MouseEvent.MOUSE_PRESSED &&
(!e.isShiftDown() ||
table.getSelectionModel().getSelectionMode() ==
ListSelectionModel.SINGLE_SELECTION)) {
table.clearSelection();
TableCellEditor tce = table.getCellEditor();
if (tce != null) {
tce.stopCellEditing();
}
}
return;
}
// The autoscroller can generate drag events outside the
// table's range.
if ((column == -1) || (row == -1)) {
return;
}
if (table.editCellAt(row, column, e)) {
setDispatchComponent(e);
repostEvent(e);
}
else {
SwingUtilities2.adjustFocus(table);
}
CellEditor editor = table.getCellEditor();
if (editor == null || editor.shouldSelectCell(e)) {
boolean adjusting = (e.getID() == MouseEvent.MOUSE_PRESSED) ?
true : false;
setValueIsAdjusting(adjusting);
makeSelectionChange(row, column, e);
}
}
protected void makeSelectionChange(int row, int column, MouseEvent e) {
boolean ctrl = e.isControlDown();
// Apply the selection state of the anchor to all cells between it and the
// current cell, and then select the current cell.
// For mustang, where API changes are allowed, this logic will moved to
// JTable.changeSelection()
if (ctrl && e.isShiftDown()) {
ListSelectionModel rm = table.getSelectionModel();
ListSelectionModel cm = table.getColumnModel().getSelectionModel();
int anchorRow = rm.getAnchorSelectionIndex();
int anchorCol = cm.getAnchorSelectionIndex();
if (table.isCellSelected(anchorRow, anchorCol)) {
rm.addSelectionInterval(anchorRow, row);
cm.addSelectionInterval(anchorCol, column);
} else {
rm.removeSelectionInterval(anchorRow, row);
rm.addSelectionInterval(row, row);
rm.setAnchorSelectionIndex(anchorRow);
cm.removeSelectionInterval(anchorCol, column);
cm.addSelectionInterval(column, column);
cm.setAnchorSelectionIndex(anchorCol);
}
} else {
table.changeSelection(row, column, ctrl, !ctrl && e.isShiftDown());
}
}
public void mouseReleased(MouseEvent e) {
if (selectedOnPress) {
if (shouldIgnore0(e)) {
return;
}
repostEvent(e);
dispatchComponent = null;
setValueIsAdjusting(false);
} else {
adjustFocusAndSelection(e);
}
}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mouseMoved(MouseEvent e) {}
public void mouseDragged(MouseEvent e) {
if (shouldIgnore0(e)) {
return;
}
mouseDraggedImpl(e);
}
protected void mouseDraggedImpl(MouseEvent e) {
repostEvent(e);
// Check isFileList:
// Until we support drag-selection, dragging should not change
// the selection (act like single-select).
if (isFileList || table.getCellEditor() != null) {
return;
}
Point p = e.getPoint();
int row = table.rowAtPoint(p);
int column = table.columnAtPoint(p);
// The autoscroller can generate drag events outside the
// table's range.
if ((column == -1) || (row == -1)) {
return;
}
table.changeSelection(row, column, false, true);
}
// PropertyChangeListener
public void propertyChange(PropertyChangeEvent event) {
String changeName = event.getPropertyName();
if ("componentOrientation" == changeName) {
JTableHeader header = table.getTableHeader();
if (header != null) {
header.setComponentOrientation(
(ComponentOrientation)event.getNewValue());
}
} else if ("transferHandler" == changeName) {
DropTarget dropTarget = table.getDropTarget();
if (dropTarget instanceof UIResource) {
if (defaultDropTargetListener == null) {
defaultDropTargetListener =
new TableDropTargetListener();
}
try {
dropTarget.addDropTargetListener(
defaultDropTargetListener);
} catch (TooManyListenersException tmle) {
// should not happen... swing drop target is multicast
}
}
} else if ("Table.isFileList" == changeName) {
isFileList = Boolean.TRUE.equals(table.getClientProperty("Table.isFileList"));
table.revalidate();
table.repaint();
}
}
}
private class DragFixHandler extends Handler implements ListSelectionListener,
ActionListener,
BeforeDrag {
// The row and column where the press occurred and the
// press event itself
private int pressedRow;
private int pressedCol;
private MouseEvent pressedEvent;
// Whether or not the mouse press (which is being considered as part
// of a drag sequence) also caused the selection change to be fully
// processed.
private boolean dragPressDidSelection;
// Set to true when a drag gesture has been fully recognized and DnD
// begins. Use this to ignore further mouse events which could be
// delivered if DnD is cancelled (via ESCAPE for example)
private boolean dragStarted;
// Whether or not we should start the editing timer on release
private boolean shouldStartTimer;
// To cache the return value of pointOutsidePrefSize since we use
// it multiple times.
private boolean outsidePrefSize;
// Used to delay the start of editing.
private Timer timer = null;
private boolean canStartDrag() {
if (pressedRow == -1 || pressedCol == -1) {
return false;
}
if (isFileList) {
return !outsidePrefSize;
}
// if this is a single selection table
if ((table.getSelectionModel().getSelectionMode() ==
ListSelectionModel.SINGLE_SELECTION) &&
(table.getColumnModel().getSelectionModel().getSelectionMode() ==
ListSelectionModel.SINGLE_SELECTION)) {
return true;
}
return table.isCellSelected(pressedRow, pressedCol);
}
public void mousePressed(MouseEvent e) {
if (SwingUtilities2.shouldIgnore(e, table)) {
return;
}
if (table.isEditing() && !table.getCellEditor().stopCellEditing()) {
Component editorComponent = table.getEditorComponent();
if (editorComponent != null && !editorComponent.hasFocus()) {
BasicLookAndFeel.compositeRequestFocus(editorComponent);
}
return;
}
Point p = e.getPoint();
pressedRow = table.rowAtPoint(p);
pressedCol = table.columnAtPoint(p);
outsidePrefSize = pointOutsidePrefSize(table, pressedRow, pressedCol, p);
if (isFileList) {
shouldStartTimer =
table.isCellSelected(pressedRow, pressedCol) &&
!e.isShiftDown() &&
!e.isControlDown() &&
!outsidePrefSize;
}
if (table.getDragEnabled()) {
mousePressedDND(e);
} else {
SwingUtilities2.adjustFocus(table);
if (!isFileList) {
setValueIsAdjusting(true);
}
adjustSelection(e);
}
}
private void mousePressedDND(MouseEvent e) {
pressedEvent = e;
boolean grabFocus = true;
dragStarted = false;
if (canStartDrag() && DragRecognitionSupport.mousePressed(e)) {
dragPressDidSelection = false;
if (e.isControlDown() && isFileList) {
// do nothing for control - will be handled on release
// or when drag starts
return;
} else if (!e.isShiftDown() && table.isCellSelected(pressedRow, pressedCol)) {
// clicking on something that's already selected
// and need to make it the lead now
table.getSelectionModel().addSelectionInterval(pressedRow,
pressedRow);
table.getColumnModel().getSelectionModel().
addSelectionInterval(pressedCol, pressedCol);
return;
}
dragPressDidSelection = true;
// could be a drag initiating event - don't grab focus
grabFocus = false;
} else if (!isFileList) {
// When drag can't happen, mouse drags might change the selection in the table
// so we want the isAdjusting flag to be set
setValueIsAdjusting(true);
}
if (grabFocus) {
SwingUtilities2.adjustFocus(table);
}
adjustSelection(e);
}
private void adjustSelection(MouseEvent e) {
// Fix for 4835633
if (outsidePrefSize) {
// If shift is down in multi-select, we should just return.
// For single select or non-shift-click, clear the selection
if (e.getID() == MouseEvent.MOUSE_PRESSED &&
(!e.isShiftDown() ||
table.getSelectionModel().getSelectionMode() ==
ListSelectionModel.SINGLE_SELECTION)) {
table.clearSelection();
TableCellEditor tce = table.getCellEditor();
if (tce != null) {
tce.stopCellEditing();
}
}
return;
}
// The autoscroller can generate drag events outside the
// table's range.
if ((pressedCol == -1) || (pressedRow == -1)) {
return;
}
boolean dragEnabled = table.getDragEnabled();
if (!dragEnabled && !isFileList && table.editCellAt(pressedRow, pressedCol, e)) {
setDispatchComponent(e);
repostEvent(e);
}
CellEditor editor = table.getCellEditor();
if (dragEnabled || editor == null || editor.shouldSelectCell(e)) {
makeSelectionChange(pressedRow, pressedCol, e);
}
}
public void valueChanged(ListSelectionEvent e) {
if (timer != null) {
timer.stop();
timer = null;
}
}
public void actionPerformed(ActionEvent ae) {
table.editCellAt(pressedRow, pressedCol, null);
Component editorComponent = table.getEditorComponent();
if (editorComponent != null && !editorComponent.hasFocus()) {
BasicLookAndFeel.compositeRequestFocus(editorComponent);
}
return;
}
private void maybeStartTimer() {
if (!shouldStartTimer) {
return;
}
if (timer == null) {
timer = new Timer(1200, this);
timer.setRepeats(false);
}
timer.start();
}
public void mouseReleased(MouseEvent e) {
if (SwingUtilities2.shouldIgnore(e, table)) {
return;
}
if (table.getDragEnabled()) {
mouseReleasedDND(e);
} else {
if (isFileList) {
maybeStartTimer();
}
}
pressedEvent = null;
repostEvent(e);
dispatchComponent = null;
setValueIsAdjusting(false);
}
private void mouseReleasedDND(MouseEvent e) {
MouseEvent me = DragRecognitionSupport.mouseReleased(e);
if (me != null) {
SwingUtilities2.adjustFocus(table);
if (!dragPressDidSelection) {
adjustSelection(me);
}
}
if (!dragStarted) {
if (isFileList) {
maybeStartTimer();
return;
}
Point p = e.getPoint();
if (pressedEvent != null &&
table.rowAtPoint(p) == pressedRow &&
table.columnAtPoint(p) == pressedCol &&
table.editCellAt(pressedRow, pressedCol, pressedEvent)) {
setDispatchComponent(pressedEvent);
repostEvent(pressedEvent);
// This may appear completely odd, but must be done for backward
// compatibility reasons. Developers have been known to rely on
// a call to shouldSelectCell after editing has begun.
CellEditor ce = table.getCellEditor();
if (ce != null) {
ce.shouldSelectCell(pressedEvent);
}
}
}
}
public void dragStarting(MouseEvent me) {
dragStarted = true;
if (me.isControlDown() && isFileList) {
table.getSelectionModel().addSelectionInterval(pressedRow,
pressedRow);
table.getColumnModel().getSelectionModel().
addSelectionInterval(pressedCol, pressedCol);
}
pressedEvent = null;
}
public void mouseDragged(MouseEvent e) {
if (SwingUtilities2.shouldIgnore(e, table)) {
return;
}
if (table.getDragEnabled() &&
(DragRecognitionSupport.mouseDragged(e, this) || dragStarted)) {
return;
}
mouseDraggedImpl(e);
}
public void propertyChange(PropertyChangeEvent event) {
super.propertyChange(event);
String changeName = event.getPropertyName();
if ("Table.isFileList" == changeName) {
if (isFileList) {
table.getSelectionModel().addListSelectionListener(getDragFixHandler());
} else {
table.getSelectionModel().removeListSelectionListener(getDragFixHandler());
timer = null;
}
} else if ("selectionModel" == changeName) {
if (isFileList) {
ListSelectionModel old = (ListSelectionModel)event.getOldValue();
old.removeListSelectionListener(getDragFixHandler());
table.getSelectionModel().addListSelectionListener(getDragFixHandler());
}
}
}
}
/*
* Returns true if the given point is outside the preferredSize of the
* item at the given row of the table. (Column must be 0).
* Returns false if the "Table.isFileList" client property is not set.
*/
private static boolean pointOutsidePrefSize(JTable table,
int row, int column, Point p) {
if (!Boolean.TRUE.equals(table.getClientProperty("Table.isFileList"))) {
return false;
}
return SwingUtilities2.pointOutsidePrefSize(table, row, column, p);
}
//
// Factory methods for the Listeners
//
private Handler getHandler() {
if (handler == null) {
handler = DRAG_FIX ? new DragFixHandler() : new Handler();
}
return handler;
}
private DragFixHandler getDragFixHandler() {
// this only called by code that's enabled when DRAG_FIX is on
assert DRAG_FIX;
return (DragFixHandler)handler;
}
/**
* Creates the key listener for handling keyboard navigation in the JTable.
*/
protected KeyListener createKeyListener() {
return null;
}
/**
* Creates the focus listener for handling keyboard navigation in the JTable.
*/
protected FocusListener createFocusListener() {
return getHandler();
}
/**
* Creates the mouse listener for the JTable.
*/
protected MouseInputListener createMouseInputListener() {
return getHandler();
}
//
// The installation/uninstall procedures and support
//
public static ComponentUI createUI(JComponent c) {
return new BasicTableUI();
}
// Installation
public void installUI(JComponent c) {
table = (JTable)c;
rendererPane = new CellRendererPane();
table.add(rendererPane);
installDefaults();
installDefaults2();
installListeners();
installKeyboardActions();
}
/**
* Initialize JTable properties, e.g. font, foreground, and background.
* The font, foreground, and background properties are only set if their
* current value is either null or a UIResource, other properties are set
* if the current value is null.
*
* @see #installUI
*/
protected void installDefaults() {
LookAndFeel.installColorsAndFont(table, "Table.background",
"Table.foreground", "Table.font");
// JTable's original row height is 16. To correctly display the
// contents on Linux we should have set it to 18, Windows 19 and
// Solaris 20. As these values vary so much it's too hard to
// be backward compatable and try to update the row height, we're
// therefor NOT going to adjust the row height based on font. If the
// developer changes the font, it's there responsability to update
// the row height.
LookAndFeel.installProperty(table, "opaque", Boolean.TRUE);
Color sbg = table.getSelectionBackground();
if (sbg == null || sbg instanceof UIResource) {
table.setSelectionBackground(UIManager.getColor("Table.selectionBackground"));
}
Color sfg = table.getSelectionForeground();
if (sfg == null || sfg instanceof UIResource) {
table.setSelectionForeground(UIManager.getColor("Table.selectionForeground"));
}
Color gridColor = table.getGridColor();
if (gridColor == null || gridColor instanceof UIResource) {
table.setGridColor(UIManager.getColor("Table.gridColor"));
}
// install the scrollpane border
Container parent = table.getParent(); // should be viewport
if (parent != null) {
parent = parent.getParent(); // should be the scrollpane
if (parent != null && parent instanceof JScrollPane) {
LookAndFeel.installBorder((JScrollPane)parent, "Table.scrollPaneBorder");
}
}
isFileList = Boolean.TRUE.equals(table.getClientProperty("Table.isFileList"));
}
private void installDefaults2() {
TransferHandler th = table.getTransferHandler();
if (th == null || th instanceof UIResource) {
table.setTransferHandler(defaultTransferHandler);
}
DropTarget dropTarget = table.getDropTarget();
if (dropTarget instanceof UIResource) {
if (defaultDropTargetListener == null) {
defaultDropTargetListener =
new TableDropTargetListener();
}
try {
dropTarget.addDropTargetListener(defaultDropTargetListener);
} catch (TooManyListenersException tmle) {
// should not happen... swing drop target is multicast
}
}
}
/**
* Attaches listeners to the JTable.
*/
protected void installListeners() {
focusListener = createFocusListener();
keyListener = createKeyListener();
mouseInputListener = createMouseInputListener();
table.addFocusListener(focusListener);
table.addKeyListener(keyListener);
if (!DRAG_FIX) {
table.addMouseListener(defaultDragRecognizer);
table.addMouseMotionListener(defaultDragRecognizer);
}
table.addMouseListener(mouseInputListener);
table.addMouseMotionListener(mouseInputListener);
table.addPropertyChangeListener(getHandler());
if (DRAG_FIX && isFileList) {
table.getSelectionModel().addListSelectionListener(getDragFixHandler());
}
}
/**
* Register all keyboard actions on the JTable.
*/
protected void installKeyboardActions() {
LazyActionMap.installLazyActionMap(table, BasicTableUI.class,
"Table.actionMap");
InputMap inputMap = getInputMap(JComponent.
WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
SwingUtilities.replaceUIInputMap(table,
JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT,
inputMap);
}
InputMap getInputMap(int condition) {
if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) {
InputMap keyMap =
(InputMap)DefaultLookup.get(table, this,
"Table.ancestorInputMap");
return keyMap;
}
return null;
}
static void loadActionMap(LazyActionMap map) {
// IMPORTANT: There is a very close coupling between the parameters
// passed to the Actions constructor. Only certain parameter
// combinations are supported. For example, the following Action would
// not work as expected:
// new Actions(Actions.NEXT_ROW_CELL, 1, 4, false, true)
// Actions which move within the selection only (having a true
// inSelection parameter) require that one of dx or dy be
// zero and the other be -1 or 1. The point of this warning is
// that you should be very careful about making sure a particular
// combination of parameters is supported before changing or
// adding anything here.
map.put(new Actions(Actions.NEXT_COLUMN, 1, 0,
false, false));
map.put(new Actions(Actions.NEXT_COLUMN_CHANGE_LEAD, 1, 0,
false, false));
map.put(new Actions(Actions.PREVIOUS_COLUMN, -1, 0,
false, false));
map.put(new Actions(Actions.PREVIOUS_COLUMN_CHANGE_LEAD, -1, 0,
false, false));
map.put(new Actions(Actions.NEXT_ROW, 0, 1,
false, false));
map.put(new Actions(Actions.NEXT_ROW_CHANGE_LEAD, 0, 1,
false, false));
map.put(new Actions(Actions.PREVIOUS_ROW, 0, -1,
false, false));
map.put(new Actions(Actions.PREVIOUS_ROW_CHANGE_LEAD, 0, -1,
false, false));
map.put(new Actions(Actions.NEXT_COLUMN_EXTEND_SELECTION,
1, 0, true, false));
map.put(new Actions(Actions.PREVIOUS_COLUMN_EXTEND_SELECTION,
-1, 0, true, false));
map.put(new Actions(Actions.NEXT_ROW_EXTEND_SELECTION,
0, 1, true, false));
map.put(new Actions(Actions.PREVIOUS_ROW_EXTEND_SELECTION,
0, -1, true, false));
map.put(new Actions(Actions.SCROLL_UP_CHANGE_SELECTION,
false, false, true, false));
map.put(new Actions(Actions.SCROLL_DOWN_CHANGE_SELECTION,
false, true, true, false));
map.put(new Actions(Actions.FIRST_COLUMN,
false, false, false, true));
map.put(new Actions(Actions.LAST_COLUMN,
false, true, false, true));
map.put(new Actions(Actions.SCROLL_UP_EXTEND_SELECTION,
true, false, true, false));
map.put(new Actions(Actions.SCROLL_DOWN_EXTEND_SELECTION,
true, true, true, false));
map.put(new Actions(Actions.FIRST_COLUMN_EXTEND_SELECTION,
true, false, false, true));
map.put(new Actions(Actions.LAST_COLUMN_EXTEND_SELECTION,
true, true, false, true));
map.put(new Actions(Actions.FIRST_ROW, false, false, true, true));
map.put(new Actions(Actions.LAST_ROW, false, true, true, true));
map.put(new Actions(Actions.FIRST_ROW_EXTEND_SELECTION,
true, false, true, true));
map.put(new Actions(Actions.LAST_ROW_EXTEND_SELECTION,
true, true, true, true));
map.put(new Actions(Actions.NEXT_COLUMN_CELL,
1, 0, false, true));
map.put(new Actions(Actions.PREVIOUS_COLUMN_CELL,
-1, 0, false, true));
map.put(new Actions(Actions.NEXT_ROW_CELL, 0, 1, false, true));
map.put(new Actions(Actions.PREVIOUS_ROW_CELL,
0, -1, false, true));
map.put(new Actions(Actions.SELECT_ALL));
map.put(new Actions(Actions.CLEAR_SELECTION));
map.put(new Actions(Actions.CANCEL_EDITING));
map.put(new Actions(Actions.START_EDITING));
map.put(TransferHandler.getCutAction().getValue(Action.NAME),
TransferHandler.getCutAction());
map.put(TransferHandler.getCopyAction().getValue(Action.NAME),
TransferHandler.getCopyAction());
map.put(TransferHandler.getPasteAction().getValue(Action.NAME),
TransferHandler.getPasteAction());
map.put(new Actions(Actions.SCROLL_LEFT_CHANGE_SELECTION,
false, false, false, false));
map.put(new Actions(Actions.SCROLL_RIGHT_CHANGE_SELECTION,
false, true, false, false));
map.put(new Actions(Actions.SCROLL_LEFT_EXTEND_SELECTION,
true, false, false, false));
map.put(new Actions(Actions.SCROLL_RIGHT_EXTEND_SELECTION,
true, true, false, false));
map.put(new Actions(Actions.ADD_TO_SELECTION));
map.put(new Actions(Actions.TOGGLE_AND_ANCHOR));
map.put(new Actions(Actions.EXTEND_TO));
map.put(new Actions(Actions.MOVE_SELECTION_TO));
}
// Uninstallation
public void uninstallUI(JComponent c) {
uninstallDefaults();
uninstallListeners();
uninstallKeyboardActions();
table.remove(rendererPane);
rendererPane = null;
table = null;
}
protected void uninstallDefaults() {
if (table.getTransferHandler() instanceof UIResource) {
table.setTransferHandler(null);
}
}
protected void uninstallListeners() {
table.removeFocusListener(focusListener);
table.removeKeyListener(keyListener);
if (!DRAG_FIX) {
table.removeMouseListener(defaultDragRecognizer);
table.removeMouseMotionListener(defaultDragRecognizer);
}
table.removeMouseListener(mouseInputListener);
table.removeMouseMotionListener(mouseInputListener);
table.removePropertyChangeListener(getHandler());
if (DRAG_FIX && isFileList) {
table.getSelectionModel().removeListSelectionListener(getDragFixHandler());
}
focusListener = null;
keyListener = null;
mouseInputListener = null;
handler = null;
}
protected void uninstallKeyboardActions() {
SwingUtilities.replaceUIInputMap(table, JComponent.
WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, null);
SwingUtilities.replaceUIActionMap(table, null);
}
//
// Size Methods
//
private Dimension createTableSize(long width) {
int height = 0;
int rowCount = table.getRowCount();
if (rowCount > 0 && table.getColumnCount() > 0) {
Rectangle r = table.getCellRect(rowCount-1, 0, true);
height = r.y + r.height;
}
// Width is always positive. The call to abs() is a workaround for
// a bug in the 1.1.6 JIT on Windows.
long tmp = Math.abs(width);
if (tmp > Integer.MAX_VALUE) {
tmp = Integer.MAX_VALUE;
}
return new Dimension((int)tmp, height);
}
/**
* Return the minimum size of the table. The minimum height is the
* row height times the number of rows.
* The minimum width is the sum of the minimum widths of each column.
*/
public Dimension getMinimumSize(JComponent c) {
long width = 0;
Enumeration enumeration = table.getColumnModel().getColumns();
while (enumeration.hasMoreElements()) {
TableColumn aColumn = (TableColumn)enumeration.nextElement();
width = width + aColumn.getMinWidth();
}
return createTableSize(width);
}
/**
* Return the preferred size of the table. The preferred height is the
* row height times the number of rows.
* The preferred width is the sum of the preferred widths of each column.
*/
public Dimension getPreferredSize(JComponent c) {
long width = 0;
Enumeration enumeration = table.getColumnModel().getColumns();
while (enumeration.hasMoreElements()) {
TableColumn aColumn = (TableColumn)enumeration.nextElement();
width = width + aColumn.getPreferredWidth();
}
return createTableSize(width);
}
/**
* Return the maximum size of the table. The maximum height is the
* row heighttimes the number of rows.
* The maximum width is the sum of the maximum widths of each column.
*/
public Dimension getMaximumSize(JComponent c) {
long width = 0;
Enumeration enumeration = table.getColumnModel().getColumns();
while (enumeration.hasMoreElements()) {
TableColumn aColumn = (TableColumn)enumeration.nextElement();
width = width + aColumn.getMaxWidth();
}
return createTableSize(width);
}
//
// Paint methods and support
//
/** Paint a representation of the <code>table</code> instance
* that was set in installUI().
*/
public void paint(Graphics g, JComponent c) {
Rectangle clip = g.getClipBounds();
Rectangle bounds = table.getBounds();
// account for the fact that the graphics has already been translated
// into the table's bounds
bounds.x = bounds.y = 0;
if (table.getRowCount() <= 0 || table.getColumnCount() <= 0 ||
// this check prevents us from painting the entire table
// when the clip doesn't intersect our bounds at all
!bounds.intersects(clip)) {
return;
}
Point upperLeft = clip.getLocation();
Point lowerRight = new Point(clip.x + clip.width - 1, clip.y + clip.height - 1);
int rMin = table.rowAtPoint(upperLeft);
int rMax = table.rowAtPoint(lowerRight);
// This should never happen (as long as our bounds intersect the clip,
// which is why we bail above if that is the case).
if (rMin == -1) {
rMin = 0;
}
// If the table does not have enough rows to fill the view we'll get -1.
// (We could also get -1 if our bounds don't intersect the clip,
// which is why we bail above if that is the case).
// Replace this with the index of the last row.
if (rMax == -1) {
rMax = table.getRowCount()-1;
}
boolean ltr = table.getComponentOrientation().isLeftToRight();
int cMin = table.columnAtPoint(ltr ? upperLeft : lowerRight);
int cMax = table.columnAtPoint(ltr ? lowerRight : upperLeft);
// This should never happen.
if (cMin == -1) {
cMin = 0;
}
// If the table does not have enough columns to fill the view we'll get -1.
// Replace this with the index of the last column.
if (cMax == -1) {
cMax = table.getColumnCount()-1;
}
// Paint the grid.
paintGrid(g, rMin, rMax, cMin, cMax);
// Paint the cells.
paintCells(g, rMin, rMax, cMin, cMax);
}
/*
* Paints the grid lines within <I>aRect</I>, using the grid
* color set with <I>setGridColor</I>. Paints vertical lines
* if <code>getShowVerticalLines()</code> returns true and paints
* horizontal lines if <code>getShowHorizontalLines()</code>
* returns true.
*/
private void paintGrid(Graphics g, int rMin, int rMax, int cMin, int cMax) {
g.setColor(table.getGridColor());
Rectangle minCell = table.getCellRect(rMin, cMin, true);
Rectangle maxCell = table.getCellRect(rMax, cMax, true);
Rectangle damagedArea = minCell.union( maxCell );
if (table.getShowHorizontalLines()) {
int tableWidth = damagedArea.x + damagedArea.width;
int y = damagedArea.y;
for (int row = rMin; row <= rMax; row++) {
y += table.getRowHeight(row);
g.drawLine(damagedArea.x, y - 1, tableWidth - 1, y - 1);
}
}
if (table.getShowVerticalLines()) {
TableColumnModel cm = table.getColumnModel();
int tableHeight = damagedArea.y + damagedArea.height;
int x;
if (table.getComponentOrientation().isLeftToRight()) {
x = damagedArea.x;
for (int column = cMin; column <= cMax; column++) {
int w = cm.getColumn(column).getWidth();
x += w;
g.drawLine(x - 1, 0, x - 1, tableHeight - 1);
}
} else {
x = damagedArea.x + damagedArea.width;
for (int column = cMin; column < cMax; column++) {
int w = cm.getColumn(column).getWidth();
x -= w;
g.drawLine(x - 1, 0, x - 1, tableHeight - 1);
}
x -= cm.getColumn(cMax).getWidth();
g.drawLine(x, 0, x, tableHeight - 1);
}
}
}
private int viewIndexForColumn(TableColumn aColumn) {
TableColumnModel cm = table.getColumnModel();
for (int column = 0; column < cm.getColumnCount(); column++) {
if (cm.getColumn(column) == aColumn) {
return column;
}
}
return -1;
}
private void paintCells(Graphics g, int rMin, int rMax, int cMin, int cMax) {
JTableHeader header = table.getTableHeader();
TableColumn draggedColumn = (header == null) ? null : header.getDraggedColumn();
TableColumnModel cm = table.getColumnModel();
int columnMargin = cm.getColumnMargin();
Rectangle cellRect;
TableColumn aColumn;
int columnWidth;
if (table.getComponentOrientation().isLeftToRight()) {
for(int row = rMin; row <= rMax; row++) {
cellRect = table.getCellRect(row, cMin, false);
for(int column = cMin; column <= cMax; column++) {
aColumn = cm.getColumn(column);
columnWidth = aColumn.getWidth();
cellRect.width = columnWidth - columnMargin;
if (aColumn != draggedColumn) {
paintCell(g, cellRect, row, column);
}
cellRect.x += columnWidth;
}
}
} else {
for(int row = rMin; row <= rMax; row++) {
cellRect = table.getCellRect(row, cMin, false);
aColumn = cm.getColumn(cMin);
if (aColumn != draggedColumn) {
columnWidth = aColumn.getWidth();
cellRect.width = columnWidth - columnMargin;
paintCell(g, cellRect, row, cMin);
}
for(int column = cMin+1; column <= cMax; column++) {
aColumn = cm.getColumn(column);
columnWidth = aColumn.getWidth();
cellRect.width = columnWidth - columnMargin;
cellRect.x -= columnWidth;
if (aColumn != draggedColumn) {
paintCell(g, cellRect, row, column);
}
}
}
}
// Paint the dragged column if we are dragging.
if (draggedColumn != null) {
paintDraggedArea(g, rMin, rMax, draggedColumn, header.getDraggedDistance());
}
// Remove any renderers that may be left in the rendererPane.
rendererPane.removeAll();
}
private void paintDraggedArea(Graphics g, int rMin, int rMax, TableColumn draggedColumn, int distance) {
int draggedColumnIndex = viewIndexForColumn(draggedColumn);
Rectangle minCell = table.getCellRect(rMin, draggedColumnIndex, true);
Rectangle maxCell = table.getCellRect(rMax, draggedColumnIndex, true);
Rectangle vacatedColumnRect = minCell.union(maxCell);
// Paint a gray well in place of the moving column.
g.setColor(table.getParent().getBackground());
g.fillRect(vacatedColumnRect.x, vacatedColumnRect.y,
vacatedColumnRect.width, vacatedColumnRect.height);
// Move to the where the cell has been dragged.
vacatedColumnRect.x += distance;
// Fill the background.
g.setColor(table.getBackground());
g.fillRect(vacatedColumnRect.x, vacatedColumnRect.y,
vacatedColumnRect.width, vacatedColumnRect.height);
// Paint the vertical grid lines if necessary.
if (table.getShowVerticalLines()) {
g.setColor(table.getGridColor());
int x1 = vacatedColumnRect.x;
int y1 = vacatedColumnRect.y;
int x2 = x1 + vacatedColumnRect.width - 1;
int y2 = y1 + vacatedColumnRect.height - 1;
// Left
g.drawLine(x1-1, y1, x1-1, y2);
// Right
g.drawLine(x2, y1, x2, y2);
}
for(int row = rMin; row <= rMax; row++) {
// Render the cell value
Rectangle r = table.getCellRect(row, draggedColumnIndex, false);
r.x += distance;
paintCell(g, r, row, draggedColumnIndex);
// Paint the (lower) horizontal grid line if necessary.
if (table.getShowHorizontalLines()) {
g.setColor(table.getGridColor());
Rectangle rcr = table.getCellRect(row, draggedColumnIndex, true);
rcr.x += distance;
int x1 = rcr.x;
int y1 = rcr.y;
int x2 = x1 + rcr.width - 1;
int y2 = y1 + rcr.height - 1;
g.drawLine(x1, y2, x2, y2);
}
}
}
private void paintCell(Graphics g, Rectangle cellRect, int row, int column) {
if (table.isEditing() && table.getEditingRow()==row &&
table.getEditingColumn()==column) {
Component component = table.getEditorComponent();
component.setBounds(cellRect);
component.validate();
}
else {
TableCellRenderer renderer = table.getCellRenderer(row, column);
Component component = table.prepareRenderer(renderer, row, column);
rendererPane.paintComponent(g, component, table, cellRect.x, cellRect.y,
cellRect.width, cellRect.height, true);
}
}
private static final TableDragGestureRecognizer defaultDragRecognizer =
DRAG_FIX ? null : new TableDragGestureRecognizer();
/**
* Drag gesture recognizer for JTable components
*/
static class TableDragGestureRecognizer extends BasicDragGestureRecognizer {
/**
* Determines if the following are true:
* <ul>
* <li>the press event is located over a selection
* <li>the dragEnabled property is true
* <li>A TranferHandler is installed
* </ul>
* <p>
* This is implemented to perform the superclass behavior
* followed by a check if the dragEnabled
* property is set and if the location picked is selected.
*/
protected boolean isDragPossible(MouseEvent e) {
if (super.isDragPossible(e)) {
JTable table = (JTable) this.getComponent(e);
if (table.getDragEnabled()) {
Point p = e.getPoint();
int row = table.rowAtPoint(p);
int column = table.columnAtPoint(p);
// For 4835633. Otherwise, you can drag a file by clicking below
// it.
if (pointOutsidePrefSize(table, row, column, p)) {
return false;
}
if ((column != -1) && (row != -1) && table.isCellSelected(row, column)) {
return true;
}
}
}
return false;
}
}
private static DropTargetListener defaultDropTargetListener = null;
/**
* A DropTargetListener to extend the default Swing handling of drop operations
* by moving the tree selection to the nearest location to the mouse pointer.
* Also adds autoscroll capability.
*/
static class TableDropTargetListener extends BasicDropTargetListener {
/**
* called to save the state of a component in case it needs to
* be restored because a drop is not performed.
*/
protected void saveComponentState(JComponent comp) {
JTable table = (JTable) comp;
rows = table.getSelectedRows();
cols = table.getSelectedColumns();
}
/**
* called to restore the state of a component
* because a drop was not performed.
*/
protected void restoreComponentState(JComponent comp) {
JTable table = (JTable) comp;
table.clearSelection();
for (int i = 0; i < rows.length; i++) {
table.addRowSelectionInterval(rows[i], rows[i]);
}
for (int i = 0; i < cols.length; i++) {
table.addColumnSelectionInterval(cols[i], cols[i]);
}
}
/**
* called to set the insertion location to match the current
* mouse pointer coordinates.
*/
protected void updateInsertionLocation(JComponent comp, Point p) {
JTable table = (JTable) comp;
int row = table.rowAtPoint(p);
int col = table.columnAtPoint(p);
if (row != -1) {
table.setRowSelectionInterval(row, row);
}
if (col != -1) {
table.setColumnSelectionInterval(col, col);
}
}
private int[] rows;
private int[] cols;
}
private static final TransferHandler defaultTransferHandler = new TableTransferHandler();
static class TableTransferHandler extends TransferHandler implements UIResource {
/**
* Create a Transferable to use as the source for a data transfer.
*
* @param c The component holding the data to be transfered. This
* argument is provided to enable sharing of TransferHandlers by
* multiple components.
* @return The representation of the data to be transfered.
*
*/
protected Transferable createTransferable(JComponent c) {
if (c instanceof JTable) {
JTable table = (JTable) c;
int[] rows;
int[] cols;
if (!table.getRowSelectionAllowed() && !table.getColumnSelectionAllowed()) {
return null;
}
if (!table.getRowSelectionAllowed()) {
int rowCount = table.getRowCount();
rows = new int[rowCount];
for (int counter = 0; counter < rowCount; counter++) {
rows[counter] = counter;
}
} else {
rows = table.getSelectedRows();
}
if (!table.getColumnSelectionAllowed()) {
int colCount = table.getColumnCount();
cols = new int[colCount];
for (int counter = 0; counter < colCount; counter++) {
cols[counter] = counter;
}
} else {
cols = table.getSelectedColumns();
}
if (rows == null || cols == null || rows.length == 0 || cols.length == 0) {
return null;
}
StringBuffer plainBuf = new StringBuffer();
StringBuffer htmlBuf = new StringBuffer();
htmlBuf.append("<html>\n<body>\n<table>\n");
for (int row = 0; row < rows.length; row++) {
htmlBuf.append("<tr>\n");
for (int col = 0; col < cols.length; col++) {
Object obj = table.getValueAt(rows[row], cols[col]);
String val = ((obj == null) ? "" : obj.toString());
plainBuf.append(val + "\t");
htmlBuf.append(" <td>" + val + "</td>\n");
}
// we want a newline at the end of each line and not a tab
plainBuf.deleteCharAt(plainBuf.length() - 1).append("\n");
htmlBuf.append("</tr>\n");
}
// remove the last newline
plainBuf.deleteCharAt(plainBuf.length() - 1);
htmlBuf.append("</table>\n</body>\n</html>");
return new BasicTransferable(plainBuf.toString(), htmlBuf.toString());
}
return null;
}
public int getSourceActions(JComponent c) {
return COPY;
}
}
} // End of Class BasicTableUI
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