only display 'play'-button in extensions view if its used

src/main/extensions/Extension.java

@@ -86,7 +86,8 @@ public abstract class Extension {
                     response.appendString(getTitle())
                             .appendString(getAuthor())
                             .appendString(getVersion())
-                            .appendString(getDescription());
+                            .appendString(getDescription())
+                            .appendBoolean(isOnClickMethodUsed());
                     writeToStream(response.toBytes());
                 }
                 else if (packet.headerId() == Extensions.OUTGOING_MESSAGES_IDS.CONNECTIONSTART) {
@@ -255,6 +256,16 @@ public abstract class Extension {
     }
 
 
+    private boolean isOnClickMethodUsed() {
+
+        try {
+            return !getClass().getDeclaredMethod("onClick").getDeclaringClass().equals(Extension.class);
+        } catch (NoSuchMethodException e) {
+//            e.printStackTrace();
+        }
+        return false;
+    }
+
     /**
      * Gets called when a connection has been established with G-Earth.
      * This does not imply a connection with Habbo is setup.

src/main/extensions/examples/AdminOnConnect.java

@@ -40,10 +40,10 @@ public class AdminOnConnect extends Extension {
         done = false;
     }
 
-    @Override
+//    @Override
-    protected void onClick() {
+//    protected void onClick() {
-        System.out.println("clicked");
+//        System.out.println("clicked");
-    }
+//    }
 
     protected String getTitle() {
         return "Always admin!";

src/main/ui/extensions/ExtensionItemContainer.java

@@ -69,11 +69,13 @@ public class ExtensionItemContainer extends GridPane {
         deleteButton.show();
         deleteButton.addEventHandler(MouseEvent.MOUSE_CLICKED, event -> item.isRemoveClickTrigger());
         SimpleClickButton clickButton = new SimpleClickButton();
-        clickButton.show();
+        if (item.isFireButtonUsed()) {
+            clickButton.show();
+        }
         clickButton.addEventHandler(MouseEvent.MOUSE_CLICKED, event -> item.isClickTrigger());
 
         HBox buttonsBox = new HBox(clickButton, deleteButton);
-        buttonsBox.setSpacing(10);
+        buttonsBox.setSpacing(item.isFireButtonUsed() ? 10 : 0);
         buttonsBox.setAlignment(Pos.CENTER);
         GridPane.setMargin(buttonsBox, new Insets(0, 5, 0, 5));
         add(buttonsBox, 4, 0);

src/main/ui/extensions/GEarthExtension.java

@@ -23,6 +23,7 @@ public class GEarthExtension {
     private String author;
     private String version;
     private String description;
+    private boolean fireEventButtonVisible;
 
     private Socket connection;
 
@@ -57,6 +58,7 @@ public class GEarthExtension {
                                 packet.readString(),
                                 packet.readString(),
                                 packet.readString(),
+                                packet.readBoolean(),
                                 connection,
                                 onDisconnectedCallback
                         );
@@ -70,11 +72,12 @@ public class GEarthExtension {
 
     }
 
-    private GEarthExtension(String title, String author, String version, String description, Socket connection, OnDisconnectedCallback onDisconnectedCallback) {
+    private GEarthExtension(String title, String author, String version, String description, boolean fireEventButtonVisible, Socket connection, OnDisconnectedCallback onDisconnectedCallback) {
         this.title = title;
         this.author = author;
         this.version = version;
         this.description = description;
+        this.fireEventButtonVisible = fireEventButtonVisible;
         this.connection = connection;
 
         GEarthExtension selff = this;
@@ -139,6 +142,10 @@ public class GEarthExtension {
         return version;
     }
 
+    public boolean isFireButtonUsed() {
+        return fireEventButtonVisible;
+    }
+
 
 
     public boolean closeConnection() {