GUI: Add (minor) convenience access to Spot Spine

src/main/java/sc/fiji/snt/BookmarkManager.java

@@ -221,7 +221,6 @@ private JPopupMenu exportMenu() {
         JMenuItem jmi = new JMenuItem("To CSV File...");
         menu.add(jmi);
         jmi.addActionListener(e -> {
-            if (noBookmarksError()) return;
             final File saveFile = sntui.saveFile("Export Bookmarks to CSV...",
                     "SNT_Bookmarks.csv", "csv");
             if (saveFile != null) {
@@ -251,7 +250,9 @@ private JPanel assembleButtonPanel() {
         impButton.addActionListener(e -> impMenu.show(impButton, impButton.getWidth() / 2, impButton.getHeight() / 2));
         final JButton expButton = new JButton("Export...");
         final JPopupMenu expMenu = exportMenu();
-        expButton.addActionListener(e -> expMenu.show(expButton, expButton.getWidth() / 2, expButton.getHeight() / 2));
+        expButton.addActionListener(e -> {
+            if (!noBookmarksError()) expMenu.show(expButton, expButton.getWidth() / 2, expButton.getHeight() / 2);
+        });
         final JPanel buttonPanel = new JPanel(new GridLayout(0, 2));
         buttonPanel.setBorder(new EmptyBorder(SNTUI.InternalUtils.MARGIN, 0, SNTUI.InternalUtils.MARGIN, 0));
         buttonPanel.add(impButton);

src/main/java/sc/fiji/snt/PathManagerUI.java

@@ -477,6 +477,12 @@ private JMenu getSpineUtilsMenu(final MultiPathActionListener multiPathListener)
 		jmi.addActionListener(multiPathListener);
 		menu.add(jmi);
 		menu.addSeparator();
+		jmi = new JMenuItem("Start Spot Spine...");
+		jmi.addActionListener(e -> {
+			plugin.getContext().getService(CommandService.class).run(SpotSpineLoaderCmd.class, true, new HashMap<>());
+		});
+		menu.add(jmi);
+		menu.addSeparator();
 		jmi = GuiUtils.menuItemTriggeringHelpURL("Spine/Varicosity Utilities Help",
 				"https://imagej.net/plugins/snt/step-by-step-instructions#spinevaricosity-analysis");
 		menu.add(jmi);

src/main/java/sc/fiji/snt/gui/DemoRunner.java

@@ -23,9 +23,11 @@
 package sc.fiji.snt.gui;
 
 import java.util.Arrays;
+import java.util.HashMap;
 import java.util.List;
 
 import org.scijava.Context;
+import org.scijava.command.CommandService;
 import org.scijava.plugin.Parameter;
 
 import ij.ImagePlus;
@@ -34,6 +36,7 @@
 import sc.fiji.snt.SNTService;
 import sc.fiji.snt.SNTUI;
 import sc.fiji.snt.Tree;
+import sc.fiji.snt.gui.cmds.SpotSpineLoaderCmd;
 
 public class DemoRunner {
 
@@ -340,13 +343,14 @@ public void load() {
 					snt.getUI().runCommand("Display/Rebuild ZY/XZ Views");
 					if (!snt.getDrawDiameters())
 						snt.getUI().runCommand("Draw diameters");
+					snt.getContext().getService(CommandService.class).run(SpotSpineLoaderCmd.class, true, new HashMap<>());
 				}
 			}
 		};
 
 		entry.summary = "Downloads the test dataset of the Spot Spine software (image stack and traced dendrite).";
 		entry.data = "Image (3D; 0.7MB) and tracings (160KB)";
-		entry.source = "Spot Spine (https://imagej.net/plugins/spot-spine) manuscript, doi:10.12688/f1000research" +
+		entry.source = "Spot Spine (https://imagej.net/plugins/spot-spine) manuscript, doi:10.12688/f1000research.146327.2" +
 				".146327.1";
 		entry.online = true;
 		entry.tracingsURL = "https://raw.githubusercontent.com/morphonets/misc/master/dataset-demos/SpotSpine/SpotSpine_ImageStack_Test.swc";

src/main/java/sc/fiji/snt/gui/cmds/EnableSciViewUpdateSiteCmd.java

@@ -23,6 +23,7 @@
  * <http://www.gnu.org/licenses/gpl-3.0.html>.
  * #L%
  */
+import net.imagej.legacy.LegacyService;
 import org.scijava.command.Command;
 import org.scijava.command.CommandInfo;
 import org.scijava.command.CommandService;
@@ -51,9 +52,12 @@ public class EnableSciViewUpdateSiteCmd implements Command {
 	@Parameter
 	private CommandService cmdService;
 
+	@Parameter
+	LegacyService legacyService;
+
 	@Override
 	public void run() {
-		final UpdateSite updateSite = updateService.getUpdateSite("SciView"); // this may be outdated
+		final UpdateSite updateSite = updateService.getUpdateSite("sciview");
 		if (updateSite != null && updateSite.isActive()) {
 			SNTUtils.log("sciview subscription detected");
 			return;
@@ -64,7 +68,7 @@ public void run() {
 		if (prompts[0])
 			runUpdater();
 		if (prompts[1])
-			ij.IJ.runPlugIn("ij.plugin.BrowserLauncher", "https://docs.scenery.graphics/sciview");
+			legacyService.runLegacyCommand("ij.plugin.BrowserLauncher","https://docs.scenery.graphics/sciview");
 	}
 
 	private void runUpdater() {

src/main/java/sc/fiji/snt/gui/cmds/SpotSpineLoaderCmd.java

@@ -0,0 +1,37 @@
+package sc.fiji.snt.gui.cmds;
+
+import net.imagej.legacy.LegacyService;
+import org.scijava.command.Command;
+import org.scijava.plugin.Parameter;
+import org.scijava.plugin.Plugin;
+import org.scijava.util.Types;
+import sc.fiji.snt.gui.GuiUtils;
+
+/**
+ * Implements the 'Open Spot Spine...' command.
+ *
+ * @author Tiago Ferreira
+ */
+@Plugin(type = Command.class, visible = false)
+public class SpotSpineLoaderCmd implements Command {
+
+    private static final String DOC_PAGE = "https://imagej.net/plugins/spot-spine#installation";
+    private static final String CLASS = "spine_sources.Spine3D_All";
+
+    @Parameter
+    LegacyService legacyService;
+
+    @Override
+    public void run() {
+        if (Types.load(CLASS) != null) {
+            legacyService.runLegacyCommand(CLASS, "");
+            return;
+        }
+        final boolean openDoc = new GuiUtils().getConfirmation("Spot Spine does not seem to be available. Please " +
+                        "install it by following the installation details on imagej.net. Open documentation page now?",
+                "Spot Spine Not Installed", "Yes. Open In Browser", "No. Dismiss");
+        if (openDoc)
+            legacyService.runLegacyCommand("ij.plugin.BrowserLauncher", DOC_PAGE);
+    }
+
+}