Name: joT67522 Date: 08/20/97


This code displays a window of icons and text labels.
The idea is that the user clicks a label and then the
code takes appropriate action (I've not provided complete
code as it should be possible to substitute out the
missing bits).

To reproduce:

Display the frame - click and drag the window by
using the titlebar and then move the mouse directly
over one of the text labels. The result will be a
rogue mouseClicked event.

NOTE: The code currently contains a workaround (see
clickedMouse).

I suspect this is related to a previous bug -4039858

/**
GUI representation of a palette object.
*/
public class PaletteGui extends Frame implements ComponentPaletteListener, MouseListener,
WindowCloserCallback {
boolean clickedMouse = false;

Panel myPanel = new Panel();

public PaletteGui() {
super();

// Register against a WindowCloser to process my window closed event
WindowCloser myCloser = new WindowCloser(this, true);

setBounds(0, 0, 1, 1);
setVisible(true);

myPanel.setBounds(getInsets().left, getInsets().top, 150, 64);
myPanel.setLayout(new GridBagLayout());
myPanel.setBackground(Color.lightGray);
setLayout(new GridBagLayout());
add(myPanel, newConstraint(GridBagConstraints.NORTHWEST, GridBagConstraints.NONE,
0, 0, 1, 1, 0, 0));
}

public void componentRemoved(ComponentPaletteEvent e) {
}

public void componentAdded(ComponentPaletteEvent e) {
LightweightPanel newPanel = new LightweightPanel();
newPanel.setLayout(new GridBagLayout());
newPanel.add(new BitmapCanvas(IconManager.getIcon(e.getComponentName())),
newConstraint(GridBagConstraints.WEST, GridBagConstraints.NONE,
0, 0, 1, 1, 2, 2));

Label newLabel = new Label(e.getComponentName());


newPanel.add(newLabel, newConstraint(GridBagConstraints.WEST, GridBagConstraints.NONE,
1, 0, 1, 1, 2, 2));

myPanel.add(newPanel, newConstraint(GridBagConstraints.WEST, GridBagConstraints.NONE,
0, GridBagConstraints.RELATIVE, 1, 1, 0, 0));

newLabel.addMouseListener(this);

// Re-size panel
setResizable(true);
Dimension newDimension = myPanel.getPreferredSize();
setBounds(0, 0, newDimension.width + getInsets().left + getInsets().right,
newDimension.height + getInsets().top + getInsets().bottom);
setResizable(false);
validate();
}

private GridBagConstraints newConstraint(int anchor, int fill, int grdx, int grdy, int grdw, int grdh,
int pdx, int pdy) {
GridBagConstraints temp = new GridBagConstraints();

temp.anchor = anchor;
temp.fill = fill;
temp.gridx = grdx;
temp.gridy = grdy;
temp.gridwidth = grdw;
temp.gridheight = grdh;
temp.ipadx = pdx;
temp.ipady = pdy;
return temp;
}

public void mouseClicked(MouseEvent e) {
// Debug.message(Debug.GUI, "mouseClicked");
if (!clickedMouse)
Debug.message(Debug.GUI, "Discarded false click");

clickedMouse = false;
}

public void mouseEntered(MouseEvent e) {
// Debug.message(Debug.GUI, "mouseEntered");
}

public void mouseExited(MouseEvent e) {
// Debug.message(Debug.GUI, "mouseExited");
}

public void mousePressed(MouseEvent e) {

// Bugfix for problem with JDK 1.1.3 related to 4039858
clickedMouse = true;
// Debug.message(Debug.GUI, "mousePressed");

Object source = e.getSource();

if (source instanceof java.awt.Label) {
Debug.message(Debug.GUI, "Component selected " + ((Label) source).getText());
}
}

public void mouseReleased(MouseEvent e) {
// Debug.message(Debug.GUI, "mouseReleased");
}

public void windowClosing() {
Debug.message(Debug.GUI, "Palette Closing");
}
}

company - Tao Systems Ltd , email - ###@###.###
======================================================================


phil.race@eng 1997-11-06

yet another duplicate of 4038721 fixed in JDK 1.1.5