fix(gui): add dots for progress titles

jadx-gui/src/main/java/jadx/gui/jobs/BackgroundExecutor.java

@@ -79,7 +79,7 @@ public class BackgroundExecutor {
 
 		@Override
 		protected Boolean doInBackground() throws Exception {
-			progressPane.changeLabel(this, task.getTitle() + ':');
+			progressPane.changeLabel(this, task.getTitle() + "… ");
 			progressPane.changeCancelBtnVisible(this, task.canBeCanceled());
 			progressPane.changeVisibility(this, true);
 
@@ -125,7 +125,8 @@ public class BackgroundExecutor {
 				}
 				if (isCancelled()) {
 					executor.shutdownNow();
-					progressPane.changeLabel(this, task.getTitle() + " (Canceling):");
+					progressPane.changeLabel(this, task.getTitle() + " (Canceling)… ");
+					progressPane.changeIndeterminate(this, true);
 					// force termination
 					executor.awaitTermination(5, TimeUnit.SECONDS);
 					return false;

jadx-gui/src/main/java/jadx/gui/jobs/DecompileJob.java

@@ -19,6 +19,6 @@ public class DecompileJob extends BackgroundJob {
 
 	@Override
 	public String getInfoString() {
-		return NLS.str("progress.decompile");
+		return NLS.str("progress.decompile") + "… ";
 	}
 }

jadx-gui/src/main/java/jadx/gui/jobs/IndexJob.java

@@ -68,6 +68,6 @@ public class IndexJob extends BackgroundJob {
 
 	@Override
 	public String getInfoString() {
-		return NLS.str("progress.index");
+		return NLS.str("progress.index") + "… ";
 	}
 }

jadx-gui/src/main/java/jadx/gui/ui/ProgressPanel.java

@@ -79,6 +79,10 @@ public class ProgressPanel extends JPanel implements PropertyChangeListener {
 				setVisible(((Boolean) evt.getNewValue()));
 				break;
 
+			case "indeterminate":
+				setIndeterminate(((Boolean) evt.getNewValue()));
+				break;
+
 			case "cancel-visible":
 				cancelButton.setVisible(((Boolean) evt.getNewValue()));
 				break;
@@ -97,6 +101,10 @@ public class ProgressPanel extends JPanel implements PropertyChangeListener {
 		task.firePropertyChange("label", null, label);
 	}
 
+	public void changeIndeterminate(SwingWorker<?, ?> task, boolean indeterminate) {
+		task.firePropertyChange("indeterminate", null, indeterminate);
+	}
+
 	public void changeVisibility(SwingWorker<?, ?> task, boolean visible) {
 		task.firePropertyChange("visible", null, visible);
 	}