Start documentation server on demand instead of the start of the app

client/src/main/java/ctbrec/docs/DocServer.java

@@ -26,6 +26,7 @@ public class DocServer {
             return;
         }
 
+        started = true;
         server = new Server();
 
         HttpConfiguration config = new HttpConfiguration();
@@ -55,7 +56,6 @@ public class DocServer {
 
         try {
             server.start();
-            started = true;
             server.join();
         } catch (BindException e) {
             LOG.error("Port {} is already in use", http.getPort(), e);

client/src/main/java/ctbrec/ui/CamrecApplication.java

@@ -32,7 +32,6 @@ import ctbrec.Config;
 import ctbrec.Model;
 import ctbrec.StringUtil;
 import ctbrec.Version;
-import ctbrec.docs.DocServer;
 import ctbrec.event.Event;
 import ctbrec.event.EventBusHolder;
 import ctbrec.event.EventHandler;
@@ -134,7 +133,6 @@ public class CamrecApplication extends Application {
         startOnlineMonitor();
         createGui(primaryStage);
         checkForUpdates();
-        startHelpServer();
         registerClipboardListener();
     }
 
@@ -160,16 +158,6 @@ public class CamrecApplication extends Application {
         }
     }
 
-    private void startHelpServer() {
-        new Thread(() -> {
-            try {
-                DocServer.start();
-            } catch (Exception e) {
-                LOG.error("Couldn't start documentation server", e);
-            }
-        }).start();
-    }
-
     private void startOnlineMonitor() {
         for (Site site : sites) {
             if(site.isEnabled()) {

client/src/main/java/ctbrec/ui/tabs/HelpTab.java

@@ -1,5 +1,9 @@
 package ctbrec.ui.tabs;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import ctbrec.docs.DocServer;
 import ctbrec.ui.DesktopIntegration;
 import javafx.geometry.Insets;
 import javafx.scene.control.Button;
@@ -8,16 +12,26 @@ import javafx.scene.layout.BorderPane;
 
 public class HelpTab extends Tab {
 
+    private static final Logger LOG = LoggerFactory.getLogger(HelpTab.class);
+
     public HelpTab() {
         setClosable(true);
         setText("Help");
 
-
         Button openHelp = new Button("Open Help");
         openHelp.setPadding(new Insets(20));
         BorderPane layout = new BorderPane(openHelp);
         BorderPane.setMargin(openHelp, new Insets(20));
         setContent(layout);
-        openHelp.setOnAction(e -> DesktopIntegration.open("http://localhost:5689/docs/index.md"));
+        openHelp.setOnAction(e -> {
+            new Thread(() -> {
+                try {
+                    DocServer.start();
+                } catch (Exception ex) {
+                    LOG.error("Couldn't start documentation server", ex);
+                }
+            }).start();
+            DesktopIntegration.open("http://localhost:5689/docs/index.md");
+        });
     }
 }