Bug 302441 [LinkedResources][CommonNavigator] When to show "Files and Folders Operation" dialog on drop
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/LinkedResourcesPreferencePage.java
data = new GridData();
        data.verticalAlignment = GridData.FILL;
        data.horizontalAlignment = GridData.FILL;
        topLabel.setLayoutData(data);
        topLabel.setFont(font);
        pathVariablesGroup.createContents(pageComponent);
        Preferences preferences = ResourcesPlugin.getPlugin()
                .getPluginPreferences();
        boolean enableLinking = !preferences
                .getBoolean(ResourcesPlugin.PREF_DISABLE_LINKING);
        enableLinkedResourcesButton.setSelection(enableLinking);
        updateWidgetState(enableLinking);
        return pageComponent;
    }
    /* (non-Javadoc)
	 * @see org.eclipse.jface.preference.PreferencePage#performDefaults()
	 */
	protected void performDefaults() {
		dragAndDropHandlingEditor.loadDefault();
		super.performDefaults();
	}
	/**
     * Create a composite that contains the line delimiter controls
     * 
     * @param parent
     */
    private void createLineSeparatorEditorControls(Composite parent){
    	Composite lineComposite = new Composite(parent,SWT.NONE);
		final GridLayout gridLayout = new GridLayout();
		gridLayout.marginWidth = 0;