Bug 312959 [Import/Export] importing file from big disk hangs UI
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ResourceTreeAndListGroup.java
if (event.getCheckable().equals(treeViewer)) {
							treeItemChecked(event.getElement(), event
                                    .getChecked());
						} else {
							listItemChecked(event.getElement(), event
                                    .getChecked(), true);
						}
                        notifyCheckStateChangeListeners(event);
                    }
                });
    }
    /**
     *	Lay out and initialize self's visual components.
     *
     *	@param parent org.eclipse.swt.widgets.Composite
     *  @param style the style flags for the new Composite
     *	@param useHeightHint If true yse the preferredHeight.
     */
    protected void createContents(Composite parent, int style,
            boolean useHeightHint) {
        
        Composite composite = new Composite(parent, style);
        composite.setFont(parent.getFont());
        GridLayout layout = new GridLayout();
        layout.numColumns = 2;
        layout.makeColumnsEqualWidth = true;
        layout.marginHeight = 0;
        layout.marginWidth = 0;
        composite.setLayout(layout);
        composite.setLayoutData(new GridData(GridData.FILL_BOTH));