Release version

src/main/java/com/kasetoatz/dacl/options/IntOption.java

@@ -0,0 +1,46 @@
+package com.kasetoatz.dacl.options;
+
+import com.google.gson.JsonElement;
+import com.kasetoatz.dacl.options.validators.AbstractValidator;
+
+public class IntOption extends AbstractInputOption<Integer>
+{
+    public IntOption(String text, String key, Integer defaultValue, AbstractValidator<Integer> validator)
+    {
+        super(text, key, defaultValue, validator);
+    }
+
+    public IntOption(String text, String key, Integer defaultValue)
+    {
+        super(text, key, defaultValue);
+    }
+
+    @Override
+    public boolean predicate(String text)
+    {
+        if (text.isEmpty() || text.equals("-")) {
+            return true;
+        }
+        try
+        {
+            Integer.parseInt(text);
+            return true;
+        }
+        catch (NumberFormatException exc)
+        {
+            return false;
+        }
+    }
+
+    @Override
+    public void changeListener(String text)
+    {
+        this.onChange((text.isEmpty() || text.equals("-")) ? 0 : Integer.parseInt(text));
+    }
+
+    @Override
+    public Integer asPrimitive(JsonElement element)
+    {
+        return element.getAsInt();
+    }
+}