Adds a new JMBE Audio Library preference to the user preferences editor (#489)

so that users can set the library path once and it will persist across
application upgrades so that they do NOT have to copy the library to
their application install with each upgrade.

src/main/java/io/github/dsheirer/gui/preference/PreferenceEditorFactory.java

@@ -20,6 +20,7 @@
 
 package io.github.dsheirer.gui.preference;
 
+import io.github.dsheirer.gui.preference.decoder.JmbeLibraryPreferenceEditor;
 import io.github.dsheirer.gui.preference.directory.DirectoryPreferenceEditor;
 import io.github.dsheirer.gui.preference.tuner.ChannelMultipleFrequencyPreferenceEditor;
 import io.github.dsheirer.gui.preference.tuner.TunerPreferenceEditor;
@@ -37,6 +38,8 @@ public class PreferenceEditorFactory
         {
             case CHANNEL_EVENT:
                 return new DecodeEventViewPreferenceEditor(userPreferences);
+            case JMBE_LIBRARY:
+                return new JmbeLibraryPreferenceEditor(userPreferences);
             case DIRECTORY:
                 return new DirectoryPreferenceEditor(userPreferences);
             case SOURCE_CHANNEL_MULTIPLE_FREQUENCY:

src/main/java/io/github/dsheirer/gui/preference/PreferenceEditorType.java

@@ -26,6 +26,7 @@ package io.github.dsheirer.gui.preference;
 public enum PreferenceEditorType
 {
     CHANNEL_EVENT("Channel Events"),
+    JMBE_LIBRARY("JMBE Audio Library"),
     DIRECTORY("Directories"),
     SOURCE_CHANNEL_MULTIPLE_FREQUENCY("Channel - Multiple Frequency"),
     SOURCE_TUNER_CHANNELIZER("Tuner Channelizer"),

src/main/java/io/github/dsheirer/gui/preference/PreferencesEditor.java

@@ -189,6 +189,11 @@ public class PreferencesEditor extends Application
         {
             TreeItem<String> treeRoot = new TreeItem<>("Root node");
 
+            TreeItem<String> decoderItem = new TreeItem<>("Decoder");
+            decoderItem.getChildren().add(new TreeItem(PreferenceEditorType.JMBE_LIBRARY));
+            treeRoot.getChildren().add(decoderItem);
+            decoderItem.setExpanded(true);
+
             TreeItem<String> displayItem = new TreeItem<>("Display");
             displayItem.getChildren().add(new TreeItem(PreferenceEditorType.CHANNEL_EVENT));
             displayItem.getChildren().add(new TreeItem(PreferenceEditorType.TALKGROUP_FORMAT));

src/main/java/io/github/dsheirer/gui/preference/decoder/JmbeLibraryPreferenceEditor.java

@@ -0,0 +1,170 @@
+/*
+ * ******************************************************************************
+ * sdrtrunk
+ * Copyright (C) 2014-2019 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
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * *****************************************************************************
+ */
+
+package io.github.dsheirer.gui.preference.decoder;
+
+import com.google.common.eventbus.Subscribe;
+import io.github.dsheirer.eventbus.MyEventBus;
+import io.github.dsheirer.preference.PreferenceType;
+import io.github.dsheirer.preference.UserPreferences;
+import io.github.dsheirer.preference.decoder.JmbeLibraryPreference;
+import javafx.event.ActionEvent;
+import javafx.event.EventHandler;
+import javafx.geometry.Insets;
+import javafx.scene.control.Button;
+import javafx.scene.control.Label;
+import javafx.scene.layout.GridPane;
+import javafx.scene.layout.HBox;
+import javafx.scene.layout.Priority;
+import javafx.stage.FileChooser;
+import javafx.stage.Stage;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.nio.file.Path;
+
+
+/**
+ * Preference settings for decoders
+ */
+public class JmbeLibraryPreferenceEditor extends HBox
+{
+    private final static Logger mLog = LoggerFactory.getLogger(JmbeLibraryPreferenceEditor.class);
+
+    private static final String PATH_NOT_SET = "(not set)";
+    private JmbeLibraryPreference mJmbeLibraryPreference;
+    private GridPane mEditorPane;
+    private Label mJmbeLibraryLabel;
+    private Button mPathToJmbeLibraryButton;
+    private Button mPathToJmbeLibraryResetButton;
+    private Label mPathToJmbeLibraryLabel;
+
+    public JmbeLibraryPreferenceEditor(UserPreferences userPreferences)
+    {
+        mJmbeLibraryPreference = userPreferences.getJmbeLibraryPreference();
+
+        //Register to receive directory preference update notifications so we can update the path labels
+        MyEventBus.getEventBus().register(this);
+
+        HBox.setHgrow(getEditorPane(), Priority.ALWAYS);
+        getChildren().add(getEditorPane());
+    }
+
+    private GridPane getEditorPane()
+    {
+        if(mEditorPane == null)
+        {
+            mEditorPane = new GridPane();
+            mEditorPane.setPadding(new Insets(10, 10, 10, 10));
+
+            int row = 0;
+
+            GridPane.setMargin(getJmbeLibraryLabel(), new Insets(0, 10, 0, 0));
+            mEditorPane.add(getJmbeLibraryLabel(), 0, row);
+
+            GridPane.setMargin(getPathToJmbeLibraryLabel(), new Insets(0, 10, 0, 0));
+            mEditorPane.add(getPathToJmbeLibraryLabel(), 1, row);
+
+            GridPane.setMargin(getPathToJmbeLibraryButton(), new Insets(2, 10, 2, 0));
+            mEditorPane.add(getPathToJmbeLibraryButton(), 2, row);
+
+            GridPane.setMargin(getPathToJmbeLibraryResetButton(), new Insets(2, 0, 2, 0));
+            mEditorPane.add(getPathToJmbeLibraryResetButton(), 3, row++);
+        }
+
+        return mEditorPane;
+    }
+
+    private Label getJmbeLibraryLabel()
+    {
+        if(mJmbeLibraryLabel == null)
+        {
+            mJmbeLibraryLabel = new Label("JMBE Audio Library:");
+        }
+
+        return mJmbeLibraryLabel;
+    }
+
+    private Button getPathToJmbeLibraryButton()
+    {
+        if(mPathToJmbeLibraryButton == null)
+        {
+            mPathToJmbeLibraryButton = new Button("Change...");
+            mPathToJmbeLibraryButton.setOnAction(new EventHandler<ActionEvent>()
+            {
+                @Override
+                public void handle(ActionEvent event)
+                {
+                    FileChooser fileChooser = new FileChooser();
+                    fileChooser.setTitle("Select JMBE Audio Library Location");
+                    Stage stage = (Stage)getPathToJmbeLibraryButton().getScene().getWindow();
+                    File selected = fileChooser.showOpenDialog(stage);
+
+                    if(selected != null)
+                    {
+                        mJmbeLibraryPreference.setPathJmbeLibrary(selected.toPath());
+                    }
+                }
+            });
+        }
+
+        return mPathToJmbeLibraryButton;
+    }
+
+    private Button getPathToJmbeLibraryResetButton()
+    {
+        if(mPathToJmbeLibraryResetButton == null)
+        {
+            mPathToJmbeLibraryResetButton = new Button("Reset");
+            mPathToJmbeLibraryResetButton.setOnAction(new EventHandler<ActionEvent>()
+            {
+                @Override
+                public void handle(ActionEvent event)
+                {
+                    mJmbeLibraryPreference.resetPathJmbeLibrary();
+                }
+            });
+        }
+
+        return mPathToJmbeLibraryResetButton;
+    }
+
+    private Label getPathToJmbeLibraryLabel()
+    {
+        if(mPathToJmbeLibraryLabel == null)
+        {
+            Path path = mJmbeLibraryPreference.getPathJmbeLibrary();
+            mPathToJmbeLibraryLabel = new Label(path != null ? path.toString() : PATH_NOT_SET);
+        }
+
+        return mPathToJmbeLibraryLabel;
+    }
+
+    @Subscribe
+    public void preferenceUpdated(PreferenceType preferenceType)
+    {
+        if(preferenceType != null && preferenceType == PreferenceType.JMBE_LIBRARY)
+        {
+            Path path = mJmbeLibraryPreference.getPathJmbeLibrary();
+            getPathToJmbeLibraryLabel().setText(path != null ? path.toString() : PATH_NOT_SET);
+        }
+    }
+}