Bug 337984

Description Grant Gayed 2011-02-23 10:26:57 EST

In the snippet below, every invocation of TreeColumn.pack() in the timer should cause the MeasureItem callback to be invoked, but it's not happening.

public static void main(String[] args) {
    final Display display = new Display();
    Shell shell = new Shell(display);
    shell.setBounds(10,10,300,300);
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.NO_SCROLL | SWT.H_SCROLL);
    tree.setHeaderVisible(true);
    new TreeColumn(tree, SWT.NONE);
    new TreeItem(tree, SWT.NONE).setText("hi");
    tree.addListener(SWT.MeasureItem, new Listener() {
        public void handleEvent(Event event) {
            event.width = counter;
            System.out.println(counter);
        }
    });
    display.timerExec(1000, new Runnable() {
        public void run() {
            if (tree.isDisposed()) return;
            counter += step;
            if (counter == 10) {
                step = 20;
            }
            if (counter == 350) {
                step = -20;
            }
            tree.getColumn(0).pack();
            display.timerExec(1000, this);
        }
    });
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch()) display.sleep();
    }
    display.dispose();
}