Bug 310444 [LinkedResources] Drag and Drop dialogs not disabled when Linked Resources turned off
I20100425-2000 - on the 'Linked Resources' preference page, disable the checkbox => DND groups are still enabled (should be disabled) - click OK - drag a file from the OS to the Package Explorer, Resource Navigator,... => "File Operation" dialog is still shown (should not be shown and just make a copy). Selecting "Link to files" gives an error dialog after I clicked OK. Additional UI problems on the preference page: - groups don't use dialog font - missing vertical gap between checkbox and first DND group: The gap should have the same size as the gap between the second group and the "Path variables..." label. Currently, the visual clustering suggests that the checkbox only applies to the DND groups.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/actions/CopyFilesAndFoldersOperation.java
* Status containing the errors detected when running the operation or
	 * <code>null</code> if no errors detected.
	 */
	private MultiStatus errorStatus;
	/**
	 * The parent shell used to show any dialogs.
	 */
	private Shell messageShell;
	/**
	 * Whether or not the copy has been canceled by the user.
	 */
	private boolean canceled = false;
	/**
	 * Whether or not the operation creates virtual folders and links instead of folders
	 * and files.
	 */
	private boolean createVirtualFoldersAndLinks = false;
	/**
	 * Whether or not the operation creates links instead of folders and files.
	 */
	private boolean createLinks = false;
	private String relativeVariable = null;
	/**
	 * Overwrite all flag.
	 */
	private boolean alwaysOverwrite = false;
	private String[] modelProviderIds;
	/**
	 * Returns a new name for a copy of the resource at the given path in the
	 * given workspace. This name is determined automatically.