/**
* Show the given message in a dialog box or independent window, depending on whether the source
* component is contained in a Frame or not.
*
* @param c The Controller that calls this method, or null if it is not called by a Controller.
* (The Controller, if any, will be notified when the error message is cleared.)
* @param message The message to display.
*/
public void setErrorMessage(Controller c, String message) {
if (popup != null) clearErrorMessage();
if (message == null) return;
errorSource = c;
errorMessage = message;
Component parent = source;
while (parent != null && !(parent instanceof Frame)) parent = parent.getParent();
if (parent != null) popup = new Dialog((Frame) parent, "Error Message", true); // modal dialog
else popup = new Frame("Error Message"); // independent window
popup.setBackground(Color.white);
popup.add(new MC(message), BorderLayout.CENTER);
Panel buttonBar = new Panel();
buttonBar.setLayout(new FlowLayout(FlowLayout.RIGHT, 10, 10));
Button OK = new Button(" OK ");
OK.addActionListener(this);
buttonBar.add(OK);
popup.add(buttonBar, BorderLayout.SOUTH);
popup.pack();
if (parent == null) popup.setLocation(100, 80);
else popup.setLocation(parent.getLocation().x + 50, parent.getLocation().y + 30);
popup.addWindowListener(
new WindowAdapter() {
public void windowClosing(WindowEvent evt) {
popup.dispose();
}
});
popup.show(); // make the dialog visible.
}
/**
* We generally draw lines to/from the <I>center</I> of components; this method finds the center
* of the argument's enclosing rectangle
*
* @return Point at the center of <CODE>c</CODE>
* @param c The component whose center point we wish to determine
*/
protected Point getCenterLocation(Component c) {
Point p1 = new Point();
Point p2 = new Point();
// start with the relative location...
c.getLocation(p1);
// get to the middle of the fractionsLabel
Dimension d = c.getSize();
p1.x += d.width / 2;
p1.y += d.height / 2;
Component parent = c.getParent();
// System.err.println("parent=" + parent);
while (parent != null) {
parent.getLocation(p2);
p1.x += p2.x;
p1.y += p2.y;
if (STOP.equals(parent.getName())) break;
parent = parent.getParent();
}
return p1;
}
/**
* Changes the frame's location to a more central screen location
*
* @param frame the frame to be moved
* @param X how far right to move the frame
* @param Y how far down to move the frame
*/
public static void changeFrameLocation(Component frame, int X, int Y) {
Point location = frame.getLocation(); // the window's current location
// move the window over and down a certain amount of pixels
location.translate(X, Y);
// set the location
frame.setLocation(location);
}
/**
* Internal MDI frames have offsets where a popup menu should be shown (in JDK 1.2). This method
* sums up iteratively all x and y offsets of all parent compontents until the top parent
* component is reached.
*/
private void adjustOffsets(Component comp, Point offsetPoint) {
if (comp != null) {
Point compLocation = comp.getLocation();
offsetPoint.translate(compLocation.x, compLocation.y);
adjustOffsets(comp.getParent(), offsetPoint);
}
}
public void componentMoved(ComponentEvent evt) {
Component component = evt.getComponent();
Point point = component.getLocation();
if (point.y < 0) {
component.setBounds(point.x, 0, component.getWidth(), component.getHeight());
}
}
private Point getLocationInTabbedPanel(Component c, TabbedPanel tp) {
Point l = SwingUtilities.convertPoint(c.getParent(), c.getLocation(), tp);
Insets tpInsets = tp.getInsets();
l.x -= tpInsets.left;
l.y -= tpInsets.top;
return l;
}
public void layoutContainer(Container target) {
// System.out.println("Laying out container " + target);
super.layoutContainer(target);
if (free != null) { // what is free??
Point loc = free.getLocation();
Dimension sz = free.getSize();
// System.out.println("Laying out free component " + free);
free.setBounds(loc.x, loc.y, sz.width, sz.height);
}
}
public static void center(Component c, Component rel) {
if (rel != null) {
c.setLocation(
rel.getLocation().x + rel.getSize().width / 2 - c.getSize().width / 2,
rel.getLocation().y + rel.getSize().height / 2 - c.getSize().height / 2);
} else {
c.setLocation(
Toolkit.getDefaultToolkit().getScreenSize().width / 2 - c.getSize().width / 2,
+Toolkit.getDefaultToolkit().getScreenSize().height / 2 - c.getSize().height / 2);
}
}
public void paint(Graphics g1) {
Graphics2D g = (Graphics2D) g1;
Component c;
Point p;
paintComponent(g);
for (int i = 0; i < getComponentCount(); i++) {
AffineTransform save = g.getTransform();
c = getComponent(i);
p = c.getLocation();
g.translate((int) p.getX(), (int) p.getY());
c.paint(g);
g.setTransform(save);
}
}
public static void ajustWidth(Component aChild, int aValue) {
assert aChild.getParent().getLayout() instanceof MarginLayout;
MarginLayout layout = (MarginLayout) aChild.getParent().getLayout();
MarginConstraints anchors = layout.getLayoutConstraints(aChild);
int containerWidth = aChild.getParent().getWidth();
int childLeft = aChild.getLocation().x;
if (anchors.getWidth() != null) {
anchors.getWidth().setPlainValue(aValue, containerWidth);
} else if (anchors.getLeft() != null && anchors.getRight() != null) {
anchors.getRight().setPlainValue(containerWidth - childLeft - aValue, containerWidth);
}
aChild.getParent().revalidate();
aChild.getParent().repaint();
}
/**
* Called by ScrollPane's internal observer of the scrollpane's adjustables. This is called
* whenever a scroll position is changed in one of adjustables, whether it was modified externally
* or from the native scrollbars themselves.
*/
public void setValue(Adjustable adj, int v) {
Component c = getScrollChild();
if (c == null) {
return;
}
Point p = c.getLocation();
switch (adj.getOrientation()) {
case Adjustable.VERTICAL:
setScrollPosition(-(p.x), v);
break;
case Adjustable.HORIZONTAL:
setScrollPosition(v, -(p.y));
break;
}
}
public void show(Event e) {
Component origin = (Component) e.target;
WComponentPeer peer = (WComponentPeer) WToolkit.targetToPeer(origin);
if (peer == null) {
// A failure to map the peer should only happen for a
// lightweight component, then find the actual native parent from
// that component. The event coorinates are going to have to be
// remapped as well.
Component nativeOrigin = WToolkit.getNativeContainer(origin);
e.target = nativeOrigin;
// remove the event coordinates
for (Component c = origin; c != nativeOrigin; c = c.getParent()) {
Point p = c.getLocation();
e.x += p.x;
e.y += p.y;
}
}
_show(e);
}
/**
* Calculates the preferred size dimensions for the specified panel given the components in the
* specified parent container.
*
* @see #minimumLayoutSize
* @param target The component to be laid out.
* @return A size deemed suitable for laying out the container.
*/
public Dimension preferredLayoutSize(Container target) {
int count;
Container parent;
Component component;
Point point;
Dimension dimension;
Insets insets;
Dimension ret;
synchronized (target.getTreeLock()) {
count = target.getComponentCount();
if (0 == count) {
// be the same size unless we have a parent
ret = target.getSize();
parent = target.getParent();
if (null != parent) {
insets = parent.getInsets();
ret = parent.getSize();
ret.setSize(
ret.width - insets.left - insets.right, ret.height - insets.top - insets.bottom);
}
} else {
ret = new Dimension(0, 0);
for (int i = 0; i < count; i++) {
component = target.getComponent(i);
if (component.isVisible()) {
point = component.getLocation();
dimension = component.getPreferredSize();
ret.width = Math.max(ret.width, point.x + dimension.width);
ret.height = Math.max(ret.height, point.y + dimension.height);
}
}
insets = target.getInsets();
ret.width += insets.left + insets.right;
ret.height += insets.top + insets.bottom;
}
}
return (ret);
}
