Attachment 282988 Details for Bug 563393 – SWT snippet to reproduce the problem with. Alternate clicks on the combo, tree and scrolling in the tree.

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SWT snippet to reproduce the problem with. Alternate clicks on the combo, tree and scrolling in the tree.

Bug563393_TreeFocusLostReplaceItems.java (text/x-java), 1.65 KB, created by Simeon Andreev

on 2020-05-22 02:54:07 EDT

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Creator: Simeon Andreev

Created: 2020-05-22 02:54:07 EDT

Size: 1.65 KB

patch

obsolete

>package test;
>
>import org.eclipse.swt.SWT;
>import org.eclipse.swt.events.FocusAdapter;
>import org.eclipse.swt.events.FocusEvent;
>import org.eclipse.swt.layout.FillLayout;
>import org.eclipse.swt.widgets.Combo;
>import org.eclipse.swt.widgets.Composite;
>import org.eclipse.swt.widgets.Display;
>import org.eclipse.swt.widgets.Shell;
>import org.eclipse.swt.widgets.Tree;
>import org.eclipse.swt.widgets.TreeItem;
>
>/*
> * Title: Bug 563393 - [GTK] Crash on selection in Tree
> * How to run: Launch the snippet and alternate clicking on the combo (top),
> *             clicking in the tree (bottom) and scrolling in the tree.
> * Bug description: JDK crashes in GTK3 code.
> * Expected results: No crash.
> * GTK Version(s): GTK3
> */
>public class Bug563393_TreeFocusLostReplaceItems {
>
>	public static void main(String[] args) {
>		Display display = new Display();
>		Shell shell = new Shell(display);
>		shell.setSize(600, 400);
>		shell.setLayout(new FillLayout());
>		Composite composite = new Composite(shell, SWT.NONE);
>		composite.setLayout(new FillLayout(SWT.VERTICAL));
>
>		Combo c = new Combo(composite, SWT.NONE);
>		c.add("1");
>		c.add("2");
>		
>		int n = 20;
>		
>		Tree tree = new Tree(composite, SWT.NONE);
>		tree.addFocusListener(new FocusAdapter() {
>			@Override
>			public void focusLost(FocusEvent e) {
>				tree.removeAll();
>				addElements(tree, n);
>			}
>		});
>		addElements(tree, n);
>
>		shell.open();
>		while (!shell.isDisposed()) {
>			if (!display.readAndDispatch())
>				display.sleep();
>		}
>		display.dispose();
>	}
>
>	private static void addElements(Tree tree, int n) {
>		for (int i = 0; i < n; ++i) {
>			TreeItem item = new TreeItem(tree, SWT.NONE);
>			item.setText("String " + i);
>		}
>	}
>}

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