Improves messages #16

src/main/java/net/knarcraft/minigames/container/PlaceholderContainer.java

@@ -0,0 +1,41 @@
+package net.knarcraft.minigames.container;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * A container for keeping track of several placeholder to value mappings
+ */
+public class PlaceholderContainer {
+
+    private final Map<String, String> placeholders;
+
+    /**
+     * Instantiates a new placeholder container
+     */
+    public PlaceholderContainer() {
+        this.placeholders = new HashMap<>();
+    }
+
+    /**
+     * Gets all placeholders
+     *
+     * @return <p>All placeholders</p>
+     */
+    public Map<String, String> getPlaceholders() {
+        return new HashMap<>(this.placeholders);
+    }
+
+    /**
+     * Adds a new placeholder
+     *
+     * @param placeholder <p>The placeholder to register</p>
+     * @param value       <p>The value of the placeholder</p>
+     * @return <p>This object</p>
+     */
+    public PlaceholderContainer add(String placeholder, String value) {
+        this.placeholders.put(placeholder, value);
+        return this;
+    }
+
+}