Better JOptionPane

src/main/java/the/bytecode/club/bytecodeviewer/BytecodeViewer.java

@@ -32,6 +32,7 @@ import the.bytecode.club.bytecodeviewer.plugin.PluginManager;
 import the.bytecode.club.bytecodeviewer.util.*;
 import the.bytecode.club.bytecodeviewer.resources.importing.ImportResource;
 
+import static javax.swing.JOptionPane.INFORMATION_MESSAGE;
 import static the.bytecode.club.bytecodeviewer.Constants.*;
 import static the.bytecode.club.bytecodeviewer.Settings.addRecentPlugin;
 import static the.bytecode.club.bytecodeviewer.util.MiscUtils.guessLanguage;
@@ -524,7 +525,7 @@ public class BytecodeViewer
      * @param message the message you need to send
      */
     public static void showMessage(String message) {
-        JOptionPane.showMessageDialog(viewer, message);
+        BetterJOptionPane.showMessageDialog(viewer, message);
     }
 
     /**

src/main/java/the/bytecode/club/bytecodeviewer/gui/components/BetterJOptionPane.java

@@ -0,0 +1,121 @@
+package the.bytecode.club.bytecodeviewer.gui.components;
+
+import javax.swing.*;
+import java.awt.*;
+import java.lang.reflect.Method;
+
+import static javax.swing.JOptionPane.*;
+
+/**
+ * All this does is fix the bug with parentComponents being minimized.
+ * The bug is the JOptionPane location ends up 0,0 instead of centered.
+ * The fix is to center the frame manually before showing.
+ *
+ * @author Konloch
+ * @author James Gosling
+ * @author Scott Violet
+ * @since 7/4/2021
+ */
+public class BetterJOptionPane
+{
+	public static void showMessageDialog(Component parentComponent,
+	                                     Object message) throws HeadlessException
+	{
+		showMessageDialog(parentComponent, message, UIManager.getString(
+				"OptionPane.messageDialogTitle", parentComponent.getLocale()),
+				INFORMATION_MESSAGE);
+	}
+	
+	public static void showMessageDialog(Component parentComponent,
+	                                     Object message, String title, int messageType)
+			throws HeadlessException
+	{
+		showMessageDialog(parentComponent, message, title, messageType, null);
+	}
+	
+	public static void showMessageDialog(Component parentComponent,
+	                                     Object message, String title, int messageType, Icon icon)
+			throws HeadlessException
+	{
+		showOptionDialog(parentComponent, message, title, DEFAULT_OPTION,
+				messageType, icon, null, null);
+	}
+	
+	public static int showOptionDialog(Component parentComponent,
+	                                   Object message, String title, int optionType, int messageType,
+	                                   Icon icon, Object[] options, Object initialValue)
+			throws HeadlessException
+	{
+		JOptionPane pane = new JOptionPane(message, messageType,
+				optionType, icon,
+				options, initialValue);
+		
+		pane.setInitialValue(initialValue);
+		pane.setComponentOrientation(((parentComponent == null) ?
+				getRootFrame() : parentComponent).getComponentOrientation());
+		
+		int style = styleFromMessageType(messageType);
+		
+		//reflection to cheat our way around the
+		// private createDialog(Component parentComponent, String title, int style)
+		JDialog dialog = null;
+		try
+		{
+			Method createDialog = pane.getClass().getDeclaredMethod("createDialog", Component.class, String.class, int.class);
+			createDialog.setAccessible(true);
+			dialog = (JDialog) createDialog.invoke(pane, parentComponent, title, style);
+		}
+		catch(Exception e)
+		{
+			e.printStackTrace();
+		}
+		
+		pane.selectInitialValue();
+		
+		//check if the dialogue is in a poor location, attempt to correct
+		if(dialog.getLocation().getY() == 0)
+			dialog.setLocationRelativeTo(null);
+		
+		dialog.show();
+		dialog.dispose();
+		
+		Object selectedValue = pane.getValue();
+		
+		if(selectedValue == null)
+			return CLOSED_OPTION;
+		
+		if(options == null)
+		{
+			if(selectedValue instanceof Integer)
+				return (Integer) selectedValue;
+			return CLOSED_OPTION;
+		}
+		
+		for(int counter = 0, maxCounter = options.length;
+		    counter < maxCounter; counter++)
+		{
+			if(options[counter].equals(selectedValue))
+				return counter;
+		}
+		
+		return CLOSED_OPTION;
+	}
+	
+	private static int styleFromMessageType(int messageType)
+	{
+		switch (messageType)
+		{
+			case ERROR_MESSAGE:
+				return JRootPane.ERROR_DIALOG;
+			case QUESTION_MESSAGE:
+				return JRootPane.QUESTION_DIALOG;
+			case WARNING_MESSAGE:
+				return JRootPane.WARNING_DIALOG;
+			case INFORMATION_MESSAGE:
+				return JRootPane.INFORMATION_DIALOG;
+			case PLAIN_MESSAGE:
+			default:
+				return JRootPane.PLAIN_DIALOG;
+		}
+	}
+}