Bug 269844 [GlobalActions] "Close Unrelated Projects" is dangerous and needs confirmation
I20090317-1745 "Close Unrelated Projects" is a dangerous operation with and hence needs a confirmation dialog (with a "don't nag me again" checkbox, if you want). I just inadvertently executed this action from the context menu, and now I have to manually restore my workspace state. Even if Undo would work, that would still cause a full build of all closed projects.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/IDEWorkspacePreferencePage.java
implements IWorkbenchPreferencePage{
	private Button autoBuildButton;
    private Button autoSaveAllButton;
    private IntegerFieldEditor saveInterval;
    private Button autoRefreshButton;
    
    private ResourceEncodingFieldEditor encodingEditor;
	private LineDelimiterEditor lineSeparatorEditor;
	
    
	private boolean clearUserSettings = false;
	private RadioGroupFieldEditor openReferencesEditor;
    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.jface.preference.PreferencePage
     */
    protected Control createContents(Composite parent) {
    	PlatformUI.getWorkbench().getHelpSystem().setHelp(parent,