Added configurable system properties (issue #497)

- with sun.java2d.noddraw=true
- can be changed by editing config file
- any property possible
- could also overwrite some hardcoded settings

kse/src/main/java/org/kse/KSE.java

@@ -28,6 +28,7 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
+import java.util.Map;
 import java.util.ResourceBundle;
 
 import javax.swing.JFrame;
@@ -95,10 +96,12 @@ public static void main(String[] args) {
                 Locale.setDefault(new Locale(language));
             }
 
-            initialiseSecurity();
+            Security.addProvider(BC);
 
             Pkcs12Util.setEncryptionStrength(preferences.getPkcs12EncryptionSetting());
 
+            setProperties(preferences.getProperties());
+
             // list of files to open after start
             List<File> parameterFiles = new ArrayList<>();
             for (String arg : args) {
@@ -117,6 +120,12 @@ public static void main(String[] args) {
         }
     }
 
+    private static void setProperties(Map<String, String> properties) {
+        for (Map.Entry<String, String> entry : properties.entrySet()) {
+            System.setProperty(entry.getKey(), entry.getValue());
+        }
+    }
+
     private static void fixAppClassName() {
         // Fix application name in Gnome top bar, see http://bugs.java.com/bugdatabase/view_bug.do?bug_id=6528430
         // TODO Bug is not fixed yet, but the workaround causes an "Illegal reflective access" warning since Java 9...
@@ -155,11 +164,6 @@ private static void setCurrentDirectory(String currentDir) {
         }
     }
 
-    private static void initialiseSecurity() {
-        // Add BouncyCastle provider
-        Security.addProvider(BC);
-    }
-
     /**
      * Get application name.
      *

kse/src/main/java/org/kse/gui/preferences/data/KsePreferences.java

@@ -22,7 +22,9 @@
 
 import java.awt.Rectangle;
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 import javax.swing.JTabbedPane;
 
@@ -66,6 +68,9 @@ public class KsePreferences {
     private boolean nativeFileChooserEnabled = false;
     private Pkcs12EncryptionSetting pkcs12EncryptionSetting = Pkcs12EncryptionSetting.strong;
     private int serialNumberLengthInBytes = 20;
+    private Map<String, String> properties = new HashMap<>() {{
+        put("sun.java2d.noddraw", "true");
+    }};
 
     // auto-generated getters/setters
 
@@ -300,4 +305,12 @@ public PasswordGeneratorSettings getPasswordGeneratorSettings() {
     public void setPasswordGeneratorSettings(PasswordGeneratorSettings passwordGeneratorSettings) {
         this.passwordGeneratorSettings = passwordGeneratorSettings;
     }
+
+    public Map<String, String> getProperties() {
+        return properties;
+    }
+
+    public void setProperties(Map<String, String> properties) {
+        this.properties = properties;
+    }
 }