TableTooltipspublic class TableTooltips extends Object implements Listener
| Fields Summary |
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| Shell | toolTipShell | | Shell | mainShell | | Label | toolTipLabel | | private final Composite | composite | | private final org.gudy.azureus2.ui.swt.views.table.TableViewSWT | tv |
| Constructors Summary |
|---|
public TableTooltips(org.gudy.azureus2.ui.swt.views.table.TableViewSWT tv, Composite composite)Initialize
this.tv = tv;
this.composite = composite;
mainShell = composite.getShell();
composite.addListener(SWT.Dispose, this);
composite.addListener(SWT.KeyDown, this);
composite.addListener(SWT.MouseMove, this);
composite.addListener(SWT.MouseHover, this);
mainShell.addListener(SWT.Deactivate, this);
tv.getComposite().addListener(SWT.Deactivate, this);
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| Methods Summary |
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| public void | handleEvent(Event event)
switch (event.type) {
case SWT.MouseHover: {
if (toolTipShell != null && !toolTipShell.isDisposed())
toolTipShell.dispose();
TableCellSWT cell = tv.getTableCell(event.x, event.y);
if (cell == null)
return;
cell.invokeToolTipListeners(TableCellSWT.TOOLTIPLISTENER_HOVER);
Object oToolTip = cell.getToolTip();
// TODO: support composite, image, etc
if (oToolTip == null || !(oToolTip instanceof String))
return;
String sToolTip = (String) oToolTip;
Display d = composite.getDisplay();
if (d == null)
return;
// We don't get mouse down notifications on trim or borders..
toolTipShell = new Shell(composite.getShell(), SWT.ON_TOP);
FillLayout f = new FillLayout();
try {
f.marginWidth = 3;
f.marginHeight = 1;
} catch (NoSuchFieldError e) {
/* Ignore for Pre 3.0 SWT.. */
}
toolTipShell.setLayout(f);
toolTipShell.setBackground(d.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
toolTipLabel = new Label(toolTipShell, SWT.WRAP);
toolTipLabel.setForeground(d.getSystemColor(SWT.COLOR_INFO_FOREGROUND));
toolTipLabel.setBackground(d.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
toolTipShell.setData("TableCellSWT", cell);
toolTipLabel.setText(sToolTip.replaceAll("&", "&&"));
// compute size on label instead of shell because label
// calculates wrap, while shell doesn't
Point size = toolTipLabel.computeSize(SWT.DEFAULT, SWT.DEFAULT);
if (size.x > 600) {
size = toolTipLabel.computeSize(600, SWT.DEFAULT, true);
}
size.x += toolTipShell.getBorderWidth() * 2 + 2;
size.y += toolTipShell.getBorderWidth() * 2;
try {
size.x += toolTipShell.getBorderWidth() * 2 + (f.marginWidth * 2);
size.y += toolTipShell.getBorderWidth() * 2 + (f.marginHeight * 2);
} catch (NoSuchFieldError e) {
/* Ignore for Pre 3.0 SWT.. */
}
Point pt = composite.toDisplay(event.x, event.y);
Rectangle displayRect;
try {
displayRect = composite.getMonitor().getClientArea();
} catch (NoSuchMethodError e) {
displayRect = composite.getDisplay().getClientArea();
}
if (pt.x + size.x > displayRect.x + displayRect.width) {
pt.x = displayRect.x + displayRect.width - size.x;
}
if (pt.y + size.y > displayRect.y + displayRect.height) {
pt.y -= size.y + 2;
} else {
pt.y += 21;
}
if (pt.y < displayRect.y)
pt.y = displayRect.y;
toolTipShell.setBounds(pt.x, pt.y, size.x, size.y);
toolTipShell.setVisible(true);
break;
}
case SWT.Dispose:
if (mainShell != null && !mainShell.isDisposed())
mainShell.removeListener(SWT.Deactivate, this);
if (tv.getComposite() != null && !tv.getComposite().isDisposed())
mainShell.removeListener(SWT.Deactivate, this);
// fall through
default:
if (toolTipShell != null) {
toolTipShell.dispose();
toolTipShell = null;
toolTipLabel = null;
}
break;
} // switch
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