Bug 148551 [Import/Export] Import File System Problem
When going to import some files if you choose General, then Filesystem. As you browse to the folder where you want to import items from and select it, the option to "Select All" is not available until you either select the folder or a file in the folder.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardFileSystemResourceImportPage1.java
return getSourceDirectoryName(this.sourceNameField.getText());
    }
    /**
     *	Answer the directory name specified as being the import source.
     *	Note that if it ends with a separator then the separator is first
     *	removed so that java treats it as a proper directory
     */
    private String getSourceDirectoryName(String sourceName) {
        IPath result = new Path(sourceName.trim());
        if (result.getDevice() != null && result.segmentCount() == 0) {
			result = result.addTrailingSeparator();
		} else {
			result = result.removeTrailingSeparator();
		}
        return result.toOSString();
    }
    /**
     *	Answer the string to display as the label for the source specification field
     */
    protected String getSourceLabel() {
        return DataTransferMessages.FileImport_fromDirectory;
    }
    /**
     *	Handle all events and enablements for widgets in this dialog
     *
     * @param event Event
     */
    public void handleEvent(Event event) {
        if (event.widget == sourceBrowseButton) {
			handleSourceBrowseButtonPressed();