/**
* Returns the component in the currently selected path which contains sourcePoint.
*
* @param source The component in whose coordinate space sourcePoint is given
* @param sourcePoint The point which is being tested
* @return The component in the currently selected path which contains sourcePoint (relative to
* the source component's coordinate space. If sourcePoint is not inside a component on the
* currently selected path, null is returned.
*/
public Component componentForPoint(Component source, Point sourcePoint) {
int screenX, screenY;
Point p = sourcePoint;
int i, c, j, d;
Component mc;
Rectangle r2;
int cWidth, cHeight;
MenuElement menuElement;
MenuElement subElements[];
Vector<MenuElement> tmp;
int selectionSize;
SwingUtilities.convertPointToScreen(p, source);
screenX = p.x;
screenY = p.y;
tmp = (Vector<MenuElement>) selection.clone();
selectionSize = tmp.size();
for (i = selectionSize - 1; i >= 0; i--) {
menuElement = (MenuElement) tmp.elementAt(i);
subElements = menuElement.getSubElements();
for (j = 0, d = subElements.length; j < d; j++) {
if (subElements[j] == null) continue;
mc = subElements[j].getComponent();
if (!mc.isShowing()) continue;
if (mc instanceof JComponent) {
cWidth = mc.getWidth();
cHeight = mc.getHeight();
} else {
r2 = mc.getBounds();
cWidth = r2.width;
cHeight = r2.height;
}
p.x = screenX;
p.y = screenY;
SwingUtilities.convertPointFromScreen(p, mc);
/**
* Return the deepest component on the selection path in whose bounds the event's point
* occurs
*/
if (p.x >= 0 && p.x < cWidth && p.y >= 0 && p.y < cHeight) {
return mc;
}
}
}
return null;
}
private boolean isComponentPartOfCurrentMenu(MenuElement root, Component c) {
MenuElement children[];
int i, d;
if (root == null) return false;
if (root.getComponent() == c) return true;
else {
children = root.getSubElements();
for (i = 0, d = children.length; i < d; i++) {
if (isComponentPartOfCurrentMenu(children[i], c)) return true;
}
}
return false;
}
JMenuItem getItem() {
JMenuItem i;
if (null == cmd) {
i = new JMenu(name);
for (MenuElement e : submenu) {
i.add(e.getItem());
}
} else {
i = new JMenuItem(cmd.name());
i.setActionCommand(cmd.name());
i.addActionListener(menuListener);
}
return i;
}
/**
* When a MenuElement receives an event from a KeyListener, it should never process the event
* directly. Instead all MenuElements should call this method with the event.
*
* @param e a KeyEvent object
*/
public void processKeyEvent(KeyEvent e) {
MenuElement[] sel2 = new MenuElement[0];
sel2 = selection.toArray(sel2);
int selSize = sel2.length;
MenuElement[] path;
if (selSize < 1) {
return;
}
for (int i = selSize - 1; i >= 0; i--) {
MenuElement elem = sel2[i];
MenuElement[] subs = elem.getSubElements();
path = null;
for (int j = 0; j < subs.length; j++) {
if (subs[j] == null
|| !subs[j].getComponent().isShowing()
|| !subs[j].getComponent().isEnabled()) {
continue;
}
if (path == null) {
path = new MenuElement[i + 2];
System.arraycopy(sel2, 0, path, 0, i + 1);
}
path[i + 1] = subs[j];
subs[j].processKeyEvent(e, path, this);
if (e.isConsumed()) {
return;
}
}
}
// finally dispatch event to the first component in path
path = new MenuElement[1];
path[0] = sel2[0];
path[0].processKeyEvent(e, path, this);
if (e.isConsumed()) {
return;
}
}
/**
* Changes the selection in the menu hierarchy. The elements in the array are sorted in order from
* the root menu element to the currently selected menu element.
*
* <p>Note that this method is public but is used by the look and feel engine and should not be
* called by client applications.
*
* @param path an array of <code>MenuElement</code> objects specifying the selected path
*/
public void setSelectedPath(MenuElement[] path) {
int i, c;
int currentSelectionCount = selection.size();
int firstDifference = 0;
if (path == null) {
path = new MenuElement[0];
}
if (DEBUG) {
System.out.print("Previous: ");
printMenuElementArray(getSelectedPath());
System.out.print("New: ");
printMenuElementArray(path);
}
for (i = 0, c = path.length; i < c; i++) {
if (i < currentSelectionCount && selection.elementAt(i) == path[i]) firstDifference++;
else break;
}
for (i = currentSelectionCount - 1; i >= firstDifference; i--) {
MenuElement me = selection.elementAt(i);
selection.removeElementAt(i);
me.menuSelectionChanged(false);
}
for (i = firstDifference, c = path.length; i < c; i++) {
if (path[i] != null) {
selection.addElement(path[i]);
path[i].menuSelectionChanged(true);
}
}
fireStateChanged();
}
public LabFrame() throws HeadlessException {
super(title);
JPanel pnl, pnl1;
data = new LabData();
alRootEntities.addAll(data.findRootEntities());
JMenuBar mb = new JMenuBar();
for (MenuElement e : menus) {
mb.add(e.getItem());
}
setJMenuBar(mb);
splMain = new JSplitPane();
getContentPane().add(splMain);
desktop = new JDesktopPane();
desktop.setPreferredSize(new Dimension(400, 200));
splMain.setRightComponent(desktop);
lmEntities = new EntityListModel();
lstEntities = new JList(lmEntities);
lstEntities.getSelectionModel().addListSelectionListener(lmEntities);
lstEntities.addMouseListener(dblClickListener);
JScrollPane scpList = new JScrollPane(lstEntities);
pnl = new JPanel(new BorderLayout(4, 4));
pnl.add(scpList, BorderLayout.CENTER);
pnl1 = new JPanel(null);
pnl1.setLayout(new BoxLayout(pnl1, BoxLayout.X_AXIS));
pnl1.add(Box.createHorizontalGlue());
pnl1.add(new JButton(actNewEntity));
pnl1.add(Box.createHorizontalGlue());
pnl1.add(new JButton(actDelEntity));
pnl1.add(Box.createHorizontalGlue());
pnl.add(pnl1, BorderLayout.SOUTH);
splMain.setLeftComponent(pnl);
il =
new InternalFrameAdapter() {
@Override
public void internalFrameClosed(InternalFrameEvent e) {
Object sel = ((EntityFrame) e.getInternalFrame()).content;
mapEntityFrames.remove(sel);
}
@Override
public void internalFrameActivated(InternalFrameEvent e) {
setTitle(title + " - " + e.getInternalFrame().getTitle());
Object sel = ((EntityFrame) e.getInternalFrame()).content;
lstEntities.setSelectedValue(sel, true);
}
};
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
updateState();
}
/**
* When a MenuElement receives an event from a MouseListener, it should never process the event
* directly. Instead all MenuElements should call this method with the event.
*
* @param event a MouseEvent object
*/
public void processMouseEvent(MouseEvent event) {
int screenX, screenY;
Point p;
int i, c, j, d;
Component mc;
Rectangle r2;
int cWidth, cHeight;
MenuElement menuElement;
MenuElement subElements[];
MenuElement path[];
Vector<MenuElement> tmp;
int selectionSize;
p = event.getPoint();
Component source = event.getComponent();
if ((source != null) && !source.isShowing()) {
// This can happen if a mouseReleased removes the
// containing component -- bug 4146684
return;
}
int type = event.getID();
int modifiers = event.getModifiers();
// 4188027: drag enter/exit added in JDK 1.1.7A, JDK1.2
if ((type == MouseEvent.MOUSE_ENTERED || type == MouseEvent.MOUSE_EXITED)
&& ((modifiers
& (InputEvent.BUTTON1_MASK | InputEvent.BUTTON2_MASK | InputEvent.BUTTON3_MASK))
!= 0)) {
return;
}
if (source != null) {
SwingUtilities.convertPointToScreen(p, source);
}
screenX = p.x;
screenY = p.y;
tmp = (Vector<MenuElement>) selection.clone();
selectionSize = tmp.size();
boolean success = false;
for (i = selectionSize - 1; i >= 0 && success == false; i--) {
menuElement = (MenuElement) tmp.elementAt(i);
subElements = menuElement.getSubElements();
path = null;
for (j = 0, d = subElements.length; j < d && success == false; j++) {
if (subElements[j] == null) continue;
mc = subElements[j].getComponent();
if (!mc.isShowing()) continue;
if (mc instanceof JComponent) {
cWidth = mc.getWidth();
cHeight = mc.getHeight();
} else {
r2 = mc.getBounds();
cWidth = r2.width;
cHeight = r2.height;
}
p.x = screenX;
p.y = screenY;
SwingUtilities.convertPointFromScreen(p, mc);
/**
* Send the event to visible menu element if menu element currently in the selected path or
* contains the event location
*/
if ((p.x >= 0 && p.x < cWidth && p.y >= 0 && p.y < cHeight)) {
int k;
if (path == null) {
path = new MenuElement[i + 2];
for (k = 0; k <= i; k++) path[k] = (MenuElement) tmp.elementAt(k);
}
path[i + 1] = subElements[j];
MenuElement currentSelection[] = getSelectedPath();
// Enter/exit detection -- needs tuning...
if (currentSelection[currentSelection.length - 1] != path[i + 1]
&& (currentSelection.length < 2
|| currentSelection[currentSelection.length - 2] != path[i + 1])) {
Component oldMC = currentSelection[currentSelection.length - 1].getComponent();
MouseEvent exitEvent =
new MouseEvent(
oldMC,
MouseEvent.MOUSE_EXITED,
event.getWhen(),
event.getModifiers(),
p.x,
p.y,
event.getXOnScreen(),
event.getYOnScreen(),
event.getClickCount(),
event.isPopupTrigger(),
MouseEvent.NOBUTTON);
currentSelection[currentSelection.length - 1].processMouseEvent(exitEvent, path, this);
MouseEvent enterEvent =
new MouseEvent(
mc,
MouseEvent.MOUSE_ENTERED,
event.getWhen(),
event.getModifiers(),
p.x,
p.y,
event.getXOnScreen(),
event.getYOnScreen(),
event.getClickCount(),
event.isPopupTrigger(),
MouseEvent.NOBUTTON);
subElements[j].processMouseEvent(enterEvent, path, this);
}
MouseEvent mouseEvent =
new MouseEvent(
mc,
event.getID(),
event.getWhen(),
event.getModifiers(),
p.x,
p.y,
event.getXOnScreen(),
event.getYOnScreen(),
event.getClickCount(),
event.isPopupTrigger(),
MouseEvent.NOBUTTON);
subElements[j].processMouseEvent(mouseEvent, path, this);
success = true;
event.consume();
}
}
}
}