I've tried to implement a resizeable tooltip but have some problems with this.
When the tooltip is shown, the text updates on change in the model (implemented with property change listener). What I need now is, that the tooltip changes its size as well depending on the text.
Tried revalidate, doLayout and repaint but with no effect. The tooltip doesn't change its size.
Only moving the mouse gives me a correct sizing for the first text which is displayed in the tooltip.
Can anybody help?
Here are some code snippets: first of all my tolltip class:
public class ResizeableToolTip extends JToolTip {
public ResizeableToolTip(final JComponent component) {
super(component);
initComponents();
}
@Override
protected void initGUI() {
super.initGUI();
setLayout(new BorderLayout());
}
/**
* Component initialization goes here...
*/
private void initComponents() {
setTipText(getComponent().getToolTipText());
setPreferredSize(calculateOptimalSize());
}
private abstract Dimension calculateOptimalSize();
@Override
public void setTipText(String tipText) {
super.setTipText(tipText);
setPreferredSize(calculateOptimalSize());
revalidate();
}
}
Then I have a button which is using this implementation:
public class MyButton extends JButton implements PropertyChangeListener {
//...
private ResizeableToolTip tooltip;
//...
private initComponents() {
//...
tooltip = new ResizeableToolTip(this);
//...
}
//...
public void propertyChange(final PropertyChangeEvent pcevt) {
//...
if (MyButtonModel.TOOLTIPTEXT_PROPERTY.equals(pcevt.getPropertyName()) {
tooltip.setTiptext((String) pcevt.getNewValue());
tooltip.repaint();
}
//...
}
//...
}
The result should be a tooltip which is displayed over the button where the text is changing when s.th. changes in the data model. The text changes are working but the size of the box of the tooltip stays on the wrong size.
