From 9efe9be5b411776ef858836cf9595cfe6413307b Mon Sep 17 00:00:00 2001
From: Danila Fedorin <danila.fedorin@gmail.com>
Date: Sat, 5 Aug 2017 17:04:07 -0700
Subject: [PATCH] Remove the default load-from-file behavior from the Abacus
 core.

---
 src/main/java/org/nwapw/abacus/Abacus.java            | 11 +++--------
 .../java/org/nwapw/abacus/config/Configuration.java   |  9 +++++++++
 .../java/org/nwapw/abacus/fx/AbacusController.java    |  9 +++++++--
 3 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/src/main/java/org/nwapw/abacus/Abacus.java b/src/main/java/org/nwapw/abacus/Abacus.java
index 8d21cb4..eda7b80 100644
--- a/src/main/java/org/nwapw/abacus/Abacus.java
+++ b/src/main/java/org/nwapw/abacus/Abacus.java
@@ -12,7 +12,7 @@ import org.nwapw.abacus.plugin.StandardPlugin;
 import org.nwapw.abacus.tree.NumberReducer;
 import org.nwapw.abacus.tree.TreeNode;
 
-import java.io.File;
+import java.util.function.Supplier;
 
 /**
  * The main calculator class. This is responsible
@@ -25,10 +25,6 @@ public class Abacus {
      * The default number implementation to be used if no other one is available / selected.
      */
     public static final NumberImplementation DEFAULT_IMPLEMENTATION = StandardPlugin.IMPLEMENTATION_NAIVE;
-    /**
-     * The file used for saving and loading configuration.
-     */
-    public static final File CONFIG_FILE = new File("config.toml");
 
     /**
      * The plugin manager responsible for
@@ -53,11 +49,10 @@ public class Abacus {
     /**
      * Creates a new instance of the Abacus calculator.
      */
-    public Abacus() {
+    public Abacus(Supplier<Configuration> configurationSupplier) {
         pluginManager = new PluginManager(this);
         numberReducer = new NumberReducer(this);
-        configuration = new Configuration(CONFIG_FILE);
-        configuration.saveTo(CONFIG_FILE);
+        configuration = configurationSupplier.get();
         LexerTokenizer lexerTokenizer = new LexerTokenizer();
         ShuntingYardParser shuntingYardParser = new ShuntingYardParser(this);
         treeBuilder = new TreeBuilder<>(lexerTokenizer, shuntingYardParser);
diff --git a/src/main/java/org/nwapw/abacus/config/Configuration.java b/src/main/java/org/nwapw/abacus/config/Configuration.java
index 0715307..c7d7721 100644
--- a/src/main/java/org/nwapw/abacus/config/Configuration.java
+++ b/src/main/java/org/nwapw/abacus/config/Configuration.java
@@ -85,6 +85,15 @@ public class Configuration {
         }
     }
 
+    /**
+     * Gets the value of this configuration as a string.
+     *
+     * @return the string that represents this configuration.
+     */
+    public String asTomlString(){
+        return TOML_WRITER.write(this);
+    }
+
     /**
      * Gets the number implementation from this configuration.
      *
diff --git a/src/main/java/org/nwapw/abacus/fx/AbacusController.java b/src/main/java/org/nwapw/abacus/fx/AbacusController.java
index 829c39d..1e75008 100644
--- a/src/main/java/org/nwapw/abacus/fx/AbacusController.java
+++ b/src/main/java/org/nwapw/abacus/fx/AbacusController.java
@@ -18,6 +18,7 @@ import org.nwapw.abacus.plugin.PluginManager;
 import org.nwapw.abacus.plugin.StandardPlugin;
 import org.nwapw.abacus.tree.TreeNode;
 
+import java.io.File;
 import java.io.IOException;
 import java.util.Set;
 
@@ -28,6 +29,10 @@ import java.util.Set;
  */
 public class AbacusController implements PluginListener {
 
+    /**
+     * The file used for saving and loading configuration.
+     */
+    public static final File CONFIG_FILE = new File("config.toml");
     /**
      * The title for the apply alert dialog.
      */
@@ -175,7 +180,7 @@ public class AbacusController implements PluginListener {
             if (oldValue.equals(settingsTab)) alertIfApplyNeeded(true);
         });
 
-        abacus = new Abacus();
+        abacus = new Abacus(() -> new Configuration(new java.io.File("config.toml")));
         PluginManager abacusPluginManager = abacus.getPluginManager();
         abacusPluginManager.addListener(this);
         abacusPluginManager.addInstantiated(new StandardPlugin(abacus.getPluginManager()));
@@ -279,7 +284,7 @@ public class AbacusController implements PluginListener {
         for (ToggleablePlugin pluginEntry : enabledPlugins) {
             if (!pluginEntry.isEnabled()) disabledPlugins.add(pluginEntry.getClassName());
         }
-        configuration.saveTo(Abacus.CONFIG_FILE);
+        configuration.saveTo(CONFIG_FILE);
         changesMade = false;
         reloadAlertShown = false;
     }