Add "Open Log" Button to when an error popup occurs (#75)

src/main/java/net/minecraftforge/installer/InstallerPanel.java

@@ -4,30 +4,18 @@
  */
 package net.minecraftforge.installer;
 
-import java.awt.BorderLayout;
 import java.awt.Color;
-import java.awt.Component;
 import java.awt.Desktop;
 import java.awt.EventQueue;
-import java.awt.Frame;
 import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import java.awt.event.MouseAdapter;
-import java.awt.event.MouseEvent;
-import java.awt.event.MouseMotionListener;
 import java.awt.image.BufferedImage;
-import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.URI;
-import java.util.ArrayList;
 import java.util.HashMap;
-import java.util.List;
 import java.util.Map;
-import java.util.Optional;
 import java.util.function.Function;
-import java.util.function.Predicate;
 
 import javax.imageio.ImageIO;
 import javax.swing.AbstractAction;
@@ -36,29 +24,20 @@
 import javax.swing.ButtonGroup;
 import javax.swing.ImageIcon;
 import javax.swing.JButton;
-import javax.swing.JCheckBox;
 import javax.swing.JDialog;
 import javax.swing.JFileChooser;
 import javax.swing.JLabel;
-import javax.swing.JList;
 import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 import javax.swing.JRadioButton;
-import javax.swing.JScrollPane;
 import javax.swing.JTextField;
-import javax.swing.ListCellRenderer;
-import javax.swing.SwingConstants;
 import javax.swing.border.LineBorder;
 
 import net.minecraftforge.installer.actions.Action;
 import net.minecraftforge.installer.actions.ActionCanceledException;
 import net.minecraftforge.installer.actions.Actions;
 import net.minecraftforge.installer.actions.ProgressCallback;
-import net.minecraftforge.installer.json.Install;
 import net.minecraftforge.installer.json.InstallV1;
-import net.minecraftforge.installer.json.Mirror;
-import net.minecraftforge.installer.json.OptionalLibrary;
-import net.minecraftforge.installer.json.Util;
 
 @SuppressWarnings("unused")
 public class InstallerPanel extends JPanel {
@@ -280,6 +259,7 @@ public void run(ProgressCallback monitor) {
         dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
         dialog.setVisible(true);
         int result = (Integer) (optionPane.getValue() != null ? optionPane.getValue() : -1);
+
         if (result == JOptionPane.OK_OPTION) {
             ProgressFrame prog = new ProgressFrame(monitor, "Installing " + profile.getVersion(), Thread.currentThread()::interrupt);
             SimpleInstaller.hookStdOut(prog);
@@ -304,7 +284,7 @@ public void run(ProgressCallback monitor) {
                         "The following addresse did not have valid certificates: " + badCerts + "<br>" +
                         "This typically happens with an outdated java install. Try updating your java install from https://adoptium.net/";
                 }
-                JOptionPane.showMessageDialog(null, message, "Error", JOptionPane.ERROR_MESSAGE);
+                JOptionPane.showOptionDialog(null, message, "Error", JOptionPane.DEFAULT_OPTION, JOptionPane.ERROR_MESSAGE, null, new Object[]{"Ok", SwingUtil.createLogButton()}, "");
                 e.printStackTrace();
             } finally {
                 prog.dispose();

src/main/java/net/minecraftforge/installer/SwingUtil.java

@@ -0,0 +1,27 @@
+package net.minecraftforge.installer;
+
+import javax.swing.*;
+import java.awt.*;
+import java.io.File;
+import java.io.IOException;
+
+public class SwingUtil {
+    public static JButton createLogButton() {
+        JButton button = new JButton("Open log");
+        button.addActionListener(ev -> {
+            File file = new File("installer.log");
+            try {
+                if (file.exists())
+                    Desktop.getDesktop().open(file);
+            } catch (IOException e) {
+                // Handle any errors that may occur during file opening
+                e.printStackTrace();
+
+                // Show the error. Does not happen on headless.
+                // Can only occur on NON-Headless, so its safe to just show the error
+                JOptionPane.showMessageDialog(null, e.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);
+            }
+        });
+        return button;
+    }
+}

src/main/java/net/minecraftforge/installer/actions/Action.java

@@ -18,6 +18,7 @@
 import net.minecraftforge.installer.SimpleInstaller;
 import net.minecraftforge.installer.json.Artifact;
 import net.minecraftforge.installer.json.InstallV1;
+import net.minecraftforge.installer.SwingUtil;
 import net.minecraftforge.installer.json.Util;
 import net.minecraftforge.installer.json.Version;
 import net.minecraftforge.installer.json.Version.Download;
@@ -40,7 +41,7 @@ protected Action(InstallV1 profile, ProgressCallback monitor, boolean isClient)
 
     protected void error(String message) {
         if (!SimpleInstaller.headless)
-            JOptionPane.showMessageDialog(null, message, "Error", JOptionPane.ERROR_MESSAGE);
+            JOptionPane.showOptionDialog(null, message, "Error", JOptionPane.DEFAULT_OPTION, JOptionPane.ERROR_MESSAGE, null, new Object[]{"Ok", SwingUtil.createLogButton()}, "");
         monitor.stage(message);
     }
 

src/main/java/net/minecraftforge/installer/actions/PostProcessors.java

@@ -36,6 +36,7 @@
 import net.minecraftforge.installer.json.Artifact;
 import net.minecraftforge.installer.json.Install.Processor;
 import net.minecraftforge.installer.json.InstallV1;
+import net.minecraftforge.installer.SwingUtil;
 import net.minecraftforge.installer.json.Version.Library;
 import net.minecraftforge.installer.json.Util;
 
@@ -281,7 +282,7 @@ private void handleError(Throwable e) {
 
     private void error(String message) {
         if (!SimpleInstaller.headless)
-            JOptionPane.showMessageDialog(null, message, "Error", JOptionPane.ERROR_MESSAGE);
+            JOptionPane.showOptionDialog(null, message, "Error", JOptionPane.DEFAULT_OPTION, JOptionPane.ERROR_MESSAGE, null, new Object[]{"Ok", SwingUtil.createLogButton()}, "");
         for (String line : message.split("\n"))
             monitor.message(line);
     }

src/main/java/net/minecraftforge/installer/json/Util.java

@@ -143,4 +143,5 @@ public static String replaceTokens(Map<String, ? extends Supplier<String>> token
 
         return buf.toString();
     }
+
 }