#1731 Adds application status bar with progress indicators for CPU, memory and disk space (event logs / recordings) usage. Updates user preferences to include threshold settings in the directories editor for max size for event logs and recordings.

src/main/java/io/github/dsheirer/gui/JavaFxWindowManager.java

@@ -41,6 +41,8 @@ import io.github.dsheirer.icon.IconModel;
 import io.github.dsheirer.jmbe.JmbeEditor;
 import io.github.dsheirer.jmbe.JmbeEditorRequest;
 import io.github.dsheirer.module.log.EventLogManager;
+import io.github.dsheirer.monitor.ResourceMonitor;
+import io.github.dsheirer.monitor.StatusBox;
 import io.github.dsheirer.playlist.PlaylistManager;
 import io.github.dsheirer.preference.UserPreferences;
 import io.github.dsheirer.source.tuner.manager.TunerManager;
@@ -90,6 +92,7 @@ public class JavaFxWindowManager extends Application
     private Stage mPlaylistStage;
     private Stage mUserPreferencesStage;
     private Stage mRecordingViewerStage;
+    private JFXPanel mStatusPanel;
 
     /**
      * Constructs an instance.  Note: this constructor is used for Swing applications.
@@ -118,6 +121,27 @@ public class JavaFxWindowManager extends Application
         setup();
     }
 
+    /**
+     * Creates or accesses the JavaFX status panel, used by the main application GUI.
+     * @param resourceMonitor for statistics
+     * @return JFXPanel accessible on Swing thread that delegates JavaFX scene creation to the FX event thread.
+     */
+    public JFXPanel getStatusPanel(ResourceMonitor resourceMonitor)
+    {
+        if(mStatusPanel == null)
+        {
+            mStatusPanel = new JFXPanel();
+
+            //JFXPanel has to be populated on the FX event thread
+            Platform.runLater(() -> {
+                Scene scene = new Scene(new StatusBox(resourceMonitor));
+                mStatusPanel.setScene(scene);
+            });
+        }
+
+        return mStatusPanel;
+    }
+
     private void setup()
     {
         //Register this class to receive events via each method annotated with @Subscribe

src/main/java/io/github/dsheirer/gui/SDRTrunk.java

@@ -43,6 +43,7 @@ import io.github.dsheirer.icon.IconModel;
 import io.github.dsheirer.log.ApplicationLog;
 import io.github.dsheirer.map.MapService;
 import io.github.dsheirer.module.log.EventLogManager;
+import io.github.dsheirer.monitor.ResourceMonitor;
 import io.github.dsheirer.playlist.PlaylistManager;
 import io.github.dsheirer.preference.UserPreferences;
 import io.github.dsheirer.properties.SystemProperties;
@@ -68,7 +69,6 @@ import java.awt.GraphicsEnvironment;
 import java.awt.Point;
 import java.awt.Robot;
 import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
 import java.awt.event.KeyEvent;
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
@@ -82,6 +82,7 @@ import java.util.List;
 import java.util.Locale;
 import java.util.Optional;
 import javafx.application.Platform;
+import javafx.embed.swing.JFXPanel;
 import javafx.scene.control.ButtonType;
 import jiconfont.icons.font_awesome.FontAwesome;
 import jiconfont.swing.IconFontSwing;
@@ -128,6 +129,8 @@ public class SDRTrunk implements Listener<TunerEvent>
     private UserPreferences mUserPreferences = new UserPreferences();
     private TunerManager mTunerManager;
     private ApplicationLog mApplicationLog;
+    private ResourceMonitor mResourceMonitor;
+    private JFXPanel mStatusPanel;
 
     private String mTitle;
 
@@ -141,6 +144,8 @@ public class SDRTrunk implements Listener<TunerEvent>
         mApplicationLog = new ApplicationLog(mUserPreferences);
         mApplicationLog.start();
 
+        mResourceMonitor = new ResourceMonitor(mUserPreferences);
+
         String operatingSystem = System.getProperty("os.name", "generic").toLowerCase(Locale.ENGLISH);
 
         if(operatingSystem.contains("mac") || operatingSystem.contains("nux"))
@@ -316,7 +321,7 @@ public class SDRTrunk implements Listener<TunerEvent>
      */
     private void initGUI()
     {
-        mMainGui.setLayout(new MigLayout("insets 0 0 0 0 ", "[grow,fill]", "[grow,fill]"));
+        mMainGui.setLayout(new MigLayout("insets 0 0 0 0 ", "[grow,fill]", "[grow,fill][]"));
 
         /**
          * Setup main JFrame window
@@ -382,6 +387,10 @@ public class SDRTrunk implements Listener<TunerEvent>
 
         mMainGui.add(mSplitPane, "cell 0 0,span,grow");
 
+        mResourceMonitor.start();
+        mStatusPanel = mJavaFxWindowManager.getStatusPanel(mResourceMonitor);
+        mMainGui.add(mStatusPanel, "span,growx");
+
         /**
          * Menu items
          */
@@ -392,14 +401,9 @@ public class SDRTrunk implements Listener<TunerEvent>
         menuBar.add(fileMenu);
 
         JMenuItem exitMenu = new JMenuItem("Exit");
-        exitMenu.addActionListener(
-            new ActionListener()
-            {
-                public void actionPerformed(ActionEvent event)
-                {
-                    processShutdown();
-                    System.exit(0);
-                }
+        exitMenu.addActionListener(event -> {
+                processShutdown();
+                System.exit(0);
             }
         );
 
@@ -571,6 +575,7 @@ public class SDRTrunk implements Listener<TunerEvent>
         mLog.info("Stopping channels ...");
         mPlaylistManager.getChannelProcessingManager().shutdown();
         mAudioRecordingManager.stop();
+        mResourceMonitor.stop();
 
         mLog.info("Stopping spectral display ...");
         mSpectralPanel.clearTuner();
@@ -742,14 +747,9 @@ public class SDRTrunk implements Listener<TunerEvent>
 
             setSelected(mBroadcastStatusPanel != null);
 
-            addActionListener(new ActionListener()
-            {
-                @Override
-                public void actionPerformed(ActionEvent e)
-                {
-                    toggleBroadcastStatusPanelVisibility();
-                    setSelected(mBroadcastStatusVisible);
-                }
+            addActionListener(e -> {
+                toggleBroadcastStatusPanelVisibility();
+                setSelected(mBroadcastStatusVisible);
             });
         }
     }

src/main/java/io/github/dsheirer/gui/preference/directory/DirectoryPreferenceEditor.java

@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- * Copyright (C) 2014-2022 Dennis Sheirer
+ * Copyright (C) 2014-2023 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -24,6 +24,7 @@ import io.github.dsheirer.eventbus.MyEventBus;
 import io.github.dsheirer.preference.PreferenceType;
 import io.github.dsheirer.preference.UserPreferences;
 import io.github.dsheirer.preference.directory.DirectoryPreference;
+import java.io.File;
 import javafx.event.ActionEvent;
 import javafx.event.EventHandler;
 import javafx.geometry.Insets;
@@ -31,6 +32,7 @@ import javafx.geometry.Orientation;
 import javafx.scene.control.Button;
 import javafx.scene.control.Label;
 import javafx.scene.control.Separator;
+import javafx.scene.control.Spinner;
 import javafx.scene.layout.GridPane;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.Priority;
@@ -39,8 +41,6 @@ import javafx.stage.Stage;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.io.File;
-
 
 /**
  * Preference settings for channel event view
@@ -97,6 +97,9 @@ public class DirectoryPreferenceEditor extends HBox
     private Button mResetStreamingButton;
     private Label mStreamingPathLabel;
 
+    private Spinner<Integer> mRecordingSpinner;
+    private Spinner<Integer> mEventLogSpinner;
+
     public DirectoryPreferenceEditor(UserPreferences userPreferences)
     {
         mDirectoryPreference = userPreferences.getDirectoryPreference();
@@ -247,11 +250,57 @@ public class DirectoryPreferenceEditor extends HBox
 
             GridPane.setMargin(getResetStreamingButton(), new Insets(2, 0, 2, 0));
             mEditorPane.add(getResetStreamingButton(), 3, row++);
+
+            Label monitorLabel = new Label("File storage usage monitoring - maximum size thresholds (MB)");
+            GridPane.setMargin(monitorLabel, new Insets(15, 0, 2, 0));
+            mEditorPane.add(monitorLabel, 0, row++, 4, 1);
+            mEditorPane.add(new Separator(Orientation.HORIZONTAL), 0, row++, 4, 1);
+
+            mEditorPane.add(new Label("Event Logs"), 0, row);
+            GridPane.setMargin(getEventLogSpinner(), new Insets(2, 2, 2, 0));
+            mEditorPane.add(getEventLogSpinner(), 1, row++);
+
+            mEditorPane.add(new Label("Recordings"), 0, row);
+            GridPane.setMargin(getRecordingSpinner(), new Insets(2, 2, 2, 0));
+            mEditorPane.add(getRecordingSpinner(), 1, row);
         }
 
         return mEditorPane;
     }
 
+    /**
+     * Recording directory maximum size threshold spinner
+     * @return spinner
+     */
+    private Spinner<Integer> getRecordingSpinner()
+    {
+        if(mRecordingSpinner == null)
+        {
+            mRecordingSpinner = new Spinner<>(100, Integer.MAX_VALUE, mDirectoryPreference.getDirectoryMaxUsageRecordings(), 100);
+            mRecordingSpinner.valueProperty().addListener((observable, oldValue, newValue) -> mDirectoryPreference
+                    .setDirectoryMaxUsageRecordings(newValue));
+        }
+
+        return mRecordingSpinner;
+    }
+
+    /**
+     * Event log directory maximum size threshold spinner
+     * @return spinner
+     */
+    private Spinner<Integer> getEventLogSpinner()
+    {
+        if(mEventLogSpinner == null)
+        {
+            mEventLogSpinner = new Spinner<>(100, Integer.MAX_VALUE, mDirectoryPreference.getDirectoryMaxUsageEventLogs(), 100);
+            mEventLogSpinner.setEditable(true);
+            mEventLogSpinner.valueProperty().addListener((observable, oldValue, newValue) -> mDirectoryPreference
+                    .setDirectoryMaxUsageEventLogs(newValue));
+        }
+
+        return mEventLogSpinner;
+    }
+
     private Label getApplicationRootLabel()
     {
         if(mApplicationRootLabel == null)