Allow drag-dropping unit and MUL files onto MML

megameklab/resources/megameklab/resources/Dialogs.properties

@@ -66,6 +66,8 @@ ConfigurationDialog.startup.text=MML Startup:
 ConfigurationDialog.startup.tooltip=Depending on the startup type selected, MML will start in the main menu or, alternatively, directly load the most recent unit or start with a new unit instead of the main menu.
 ConfigurationDialog.mekChassis.text=Mek Chassis Arrangement:
 ConfigurationDialog.mekChassis.tooltip=Meks with a Clan and an IS chassis name will print their chassis in the selected arrangement. Meks with no clan chassis name will always just print their chassis.
+ConfigurationDialog.cbMulDndBehaviour.text=MUL file drag and drop behaviour:
+ConfigurationDialog.cbMulDndBehaviour.tooltip=What should be done when a MUL file is dragged onto the MML window?
 
 RecordSheetTask.printing=Printing
 RecordSheetTask.exporting=Exporting

megameklab/resources/megameklab/resources/Menu.properties

@@ -117,6 +117,9 @@ MMLStartUp.NEW_JUMPSHIP=New Advanced Aerospace
 MMLStartUp.NEW_SUPPORTVEE=New Support Vehicle
 MMLStartUp.NEW_PROTOMEK=New ProtoMek
 
+MulDndBehaviour.PRINT=Print
+MulDndBehaviour.EXPORT=Export to PDF
+
 # The following values are used programatically by ClanISMekNameOrdering
 ClanISMekNameOrdering.CLAN_IS=Clan Name (IS Name)
 ClanISMekNameOrdering.IS_CLAN=IS Name (Clan Name)

megameklab/src/megameklab/ui/MegaMekLabMainUI.java

@@ -24,6 +24,7 @@
 import megameklab.ui.util.ExitOnWindowClosingListener;
 import megameklab.ui.util.RefreshListener;
 import megameklab.util.CConfig;
+import megameklab.util.MMLFileDropTarget;
 
 import javax.swing.*;
 import java.awt.*;
@@ -34,7 +35,7 @@ public abstract class MegaMekLabMainUI extends JFrame implements RefreshListener
     protected MenuBar mmlMenuBar;
     protected boolean refreshRequired = false;
     private String originalName = "";
-    
+
     public MegaMekLabMainUI() {
         setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
         addWindowListener(new ExitOnWindowClosingListener(this));
@@ -46,8 +47,9 @@ protected void finishSetup() {
         setJMenuBar(mmlMenuBar);
         reloadTabs();
         refreshAll();
+        this.setDropTarget(new MMLFileDropTarget(this));
     }
-    
+
     protected void setSizeAndLocation() {
         pack();
         restrictToScrenSize();
@@ -196,4 +198,9 @@ public void refreshMenuBar() {
     public boolean hasEntityNameChanged() {
         return !MenuBar.createUnitFilename(entity).equals(originalName);
     }
-}
+
+    @Override
+    public MenuBar getMMLMenuBar() {
+        return mmlMenuBar;
+    }
+}

megameklab/src/megameklab/ui/MenuBar.java

@@ -1202,6 +1202,10 @@ private void loadUnitFromFile(int fileNumber) {
             }
         }
 
+        loadFile(unitFile);
+    }
+
+    public void loadFile(File unitFile) {
         try {
             Entity loadedUnit = new MekFileParser(unitFile).getEntity();
 

megameklab/src/megameklab/ui/MenuBarOwner.java

@@ -133,4 +133,6 @@ default void changeTheme(String lookAndFeelInfo) {
             }
         });
     }
+
+    MenuBar getMMLMenuBar();
 }

megameklab/src/megameklab/ui/MulDndBehaviour.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2024 - The MegaMek Team. All Rights Reserved.
+ *
+ * This file is part of MegaMekLab.
+ *
+ * MegaMek 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.
+ *
+ * MegaMek 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 MegaMek. If not, see <http://www.gnu.org/licenses/>.
+ */
+package megameklab.ui;
+
+import java.util.ResourceBundle;
+
+public enum MulDndBehaviour {
+    PRINT,
+    EXPORT;
+
+    private final ResourceBundle resources = ResourceBundle.getBundle("megameklab.resources.Menu");
+
+    /** @return A display name for this MMLStartUp taken from the resources (possibly localised). */
+    public String getDisplayName() {
+        return resources.getString("MulDndBehaviour." + name());
+    }
+}

megameklab/src/megameklab/ui/StartupGUI.java

@@ -29,6 +29,7 @@
 import megameklab.ui.dialog.UiLoader;
 import megameklab.ui.util.ExitOnWindowClosingListener;
 import megameklab.util.CConfig;
+import megameklab.util.MMLFileDropTarget;
 import megameklab.util.UnitUtil;
 
 import javax.swing.*;
@@ -236,6 +237,7 @@ private void initComponents() {
         frame.pack();
         frame.setLocationRelativeTo(null);
         frame.setVisible(true);
+        this.setDropTarget(new MMLFileDropTarget(this));
     }
 
     /**
@@ -314,4 +316,9 @@ public boolean hasEntityNameChanged() {
     public void refreshMenuBar() {
         mmlMenuBar.refreshMenuBar();
     }
+
+    @Override
+    public MenuBar getMMLMenuBar() {
+        return mmlMenuBar;
+    }
 }

megameklab/src/megameklab/ui/dialog/settings/MiscSettingsPanel.java

@@ -39,16 +39,10 @@
 import megamek.common.preference.PreferenceManager;
 import megamek.logging.MMLogger;
 import megameklab.ui.MMLStartUp;
+import megameklab.ui.MulDndBehaviour;
 import megameklab.ui.util.SpringUtilities;
 import megameklab.util.CConfig;
-import org.apache.logging.log4j.LogManager;
 
-import javax.swing.*;
-import javax.swing.border.EmptyBorder;
-import java.awt.*;
-import java.io.File;
-import java.net.MalformedURLException;
-import java.net.URL;
 import java.util.*;
 
 /**
@@ -64,9 +58,10 @@ public class MiscSettingsPanel extends JPanel {
     private final JCheckBox chkSkipSavePrompts = new JCheckBox();
     private final JTextField txtUserDir = new JTextField(20);
     private final JSlider guiScale = new JSlider();
+    private final MMComboBox<MulDndBehaviour> cbMulDndBehaviour = new MMComboBox<>("MUL Drag and Drop behaviour", MulDndBehaviour.values());
 
     MiscSettingsPanel(JFrame parent) {
-        startUpMMComboBox.setRenderer(startUpRenderer);
+        startUpMMComboBox.setRenderer(miscComboBoxRenderer);
         startUpMMComboBox.setSelectedItem(CConfig.getStartUpType());
         startUpMMComboBox.setToolTipText(resources.getString("ConfigurationDialog.startup.tooltip"));
         JLabel startUpLabel = new JLabel(resources.getString("ConfigurationDialog.startup.text"));
@@ -78,6 +73,17 @@ public class MiscSettingsPanel extends JPanel {
         startUpLine.add(Box.createHorizontalStrut(5));
         startUpLine.add(startUpMMComboBox);
 
+        cbMulDndBehaviour.setRenderer(miscComboBoxRenderer);
+        cbMulDndBehaviour.setToolTipText(resources.getString("ConfigurationDialog.cbMulDndBehaviour.tooltip"));
+        cbMulDndBehaviour.setSelectedItem(CConfig.getBooleanParam(CConfig.MISC_MUL_DND_BEHAVIOUR) ? MulDndBehaviour.EXPORT : MulDndBehaviour.PRINT);
+        JLabel mulDndLabel = new JLabel(resources.getString("ConfigurationDialog.cbMulDndBehaviour.text"));
+        mulDndLabel.setToolTipText(resources.getString("ConfigurationDialog.cbMulDndBehaviour.tooltip"));
+
+        JPanel mulDndLine = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
+        mulDndLine.add(mulDndLabel);
+        mulDndLine.add(Box.createHorizontalStrut(5));
+        mulDndLine.add(cbMulDndBehaviour);
+
         chkSummaryFormatTRO.setText(resources.getString("ConfigurationDialog.chkSummaryFormatTRO.text"));
         chkSummaryFormatTRO.setToolTipText(resources.getString("ConfigurationDialog.chkSummaryFormatTRO.tooltip"));
 
@@ -136,11 +142,12 @@ public class MiscSettingsPanel extends JPanel {
         JPanel gridPanel = new JPanel(new SpringLayout());
         gridPanel.add(startUpLine);
         gridPanel.add(userDirLine);
+        gridPanel.add(mulDndLine);
         gridPanel.add(chkSummaryFormatTRO);
         gridPanel.add(chkSkipSavePrompts);
         gridPanel.add(scaleLine);
 
-        SpringUtilities.makeCompactGrid(gridPanel, 5, 1, 0, 0, 15, 10);
+        SpringUtilities.makeCompactGrid(gridPanel, 6, 1, 0, 0, 15, 10);
         gridPanel.setBorder(new EmptyBorder(20, 30, 20, 30));
         setLayout(new FlowLayout(FlowLayout.LEFT));
         add(gridPanel);
@@ -154,6 +161,7 @@ Map<String, String> getMiscSettings() {
                 ? MMLStartUp.SPLASH_SCREEN
                 : startUpMMComboBox.getSelectedItem();
         miscSettings.put(CConfig.MISC_STARTUP, startUp.name());
+        miscSettings.put(CConfig.MISC_MUL_DND_BEHAVIOUR, String.valueOf(cbMulDndBehaviour.getSelectedItem() == MulDndBehaviour.EXPORT));
         // User directory and gui scale are stored in MM's client settings, not in CConfig, therefore not added here
         return miscSettings;
     }
@@ -166,7 +174,7 @@ float guiScale() {
         return 0.1f * guiScale.getValue();
     }
 
-    DefaultListCellRenderer startUpRenderer = new DefaultListCellRenderer() {
+    DefaultListCellRenderer miscComboBoxRenderer = new DefaultListCellRenderer() {
         @Override
         public Component getListCellRendererComponent(JList<?> list, Object value, int index, boolean isSelected,
                 boolean cellHasFocus) {
@@ -175,6 +183,11 @@ public Component getListCellRendererComponent(JList<?> list, Object value, int i
     };
 
     private String displayName(Object value) {
-        return (value instanceof MMLStartUp) ? ((MMLStartUp) value).getDisplayName() : "";
+        if (value instanceof MMLStartUp su) {
+            return su.getDisplayName();
+        } else if (value instanceof MulDndBehaviour mdb) {
+            return mdb.getDisplayName();
+        }
+        return "";
     }
 }

megameklab/src/megameklab/util/CConfig.java

@@ -62,6 +62,7 @@ public final class CConfig {
     public static final String MISC_STARTUP = "StartupGui";
     public static final String MISC_SUMMARY_FORMAT_TRO = "useTROFormat";
     public static final String MISC_SKIP_SAFETY_PROMPTS = "skipSafetyPrompts";
+    public static final String MISC_MUL_DND_BEHAVIOUR = "mulDndBehaviour";
 
     public static final String GUI_PLAF = "lookAndFeel";
     public static final String GUI_COLOR_WEAPONS = "Weapons";

megameklab/src/megameklab/util/MMLFileDropTarget.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2024 - The MegaMek Team. All Rights Reserved.
+ *
+ * This file is part of MegaMekLab.
+ *
+ * MegaMek 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.
+ *
+ * MegaMek 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 MegaMek. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package megameklab.util;
+
+import megamek.logging.MMLogger;
+import megameklab.ui.MenuBarOwner;
+
+import java.awt.datatransfer.DataFlavor;
+import java.awt.dnd.DnDConstants;
+import java.awt.dnd.DropTarget;
+import java.awt.dnd.DropTargetDropEvent;
+import java.io.File;
+import java.util.List;
+
+public class MMLFileDropTarget extends DropTarget {
+    private static final MMLogger logger = MMLogger.create(MMLFileDropTarget.class);
+
+    private final MenuBarOwner owner;
+
+    public MMLFileDropTarget(MenuBarOwner owner) {
+        this.owner = owner;
+    }
+
+    public synchronized void drop(DropTargetDropEvent event) {
+        try {
+            event.acceptDrop(DnDConstants.ACTION_COPY);
+            var files = (List<File>) event.getTransferable().getTransferData(DataFlavor.javaFileListFlavor);
+            if (files.size() != 1) {
+                event.dropComplete(false);
+            }
+
+            var file = files.get(0);
+            var name = file.getName();
+
+            if (name.endsWith(".mtf") || name.endsWith(".blk")) {
+                owner.getMMLMenuBar().loadFile(file);
+                event.dropComplete(true);
+            } else if (name.endsWith(".mul")) {
+                UnitPrintManager.printMUL(owner.getFrame(), CConfig.getBooleanParam(CConfig.MISC_MUL_DND_BEHAVIOUR), file);
+            } else {
+                event.dropComplete(false);
+            }
+
+
+        } catch (Exception e) {
+            event.dropComplete(false);
+            logger.warn(e);
+        }
+    }
+}

megameklab/src/megameklab/util/UnitPrintManager.java

@@ -77,20 +77,24 @@ public static void printMUL(JFrame parent, boolean printToPdf) {
             // I want a file, y'know!
             return;
         }
+        printMUL(parent, printToPdf, f.getSelectedFile());
+    }
+
+    public static void printMUL(JFrame parent, boolean printToPdf, File file) {
         Vector<Entity> loadedUnits;
         try {
             var options = new GameOptions();
             options.initialize();
             options.getOption(RPG_MANEI_DOMINI).setValue(true);
             options.getOption(RPG_PILOT_ADVANTAGES).setValue(true);
-            loadedUnits = new MULParser(f.getSelectedFile(), options).getEntities();
+            loadedUnits = new MULParser(file, options).getEntities();
             loadedUnits.trimToSize();
         } catch (Exception ex) {
             logger.error("", ex);
             return;
         }
 
-        new PrintQueueDialog(parent, printToPdf, loadedUnits, true, f.getSelectedFile().getName()).setVisible(true);
+        new PrintQueueDialog(parent, printToPdf, loadedUnits, true, file.getName()).setVisible(true);
     }
 
     public static File getExportFile(Frame parent) {