diff --git a/dev/js/src/state.js b/dev/js/src/state.js
new file mode 100644
index 0000000..013ae10
--- /dev/null
+++ b/dev/js/src/state.js
@@ -0,0 +1,64 @@
+/**
+ * Create a state object, that can have a single value
+ * (mostly boolean) and multiple objects associated to it.
+ * Whenever the state changes, all objects are informed
+ * by their setState() method of the value change.
+ *
+ * @author Nils Diewald
+ */
+define(function () {
+
+  "use strict";
+
+  return {
+
+    /**
+     * Constructor
+     */
+    create : function (value) {
+      return Object.create(this)._init(value);
+    },
+
+    // Initialize
+    _init : function (value) {
+      this._assoc = [];
+      this.value = value;
+      return this;
+    },
+
+
+    /**
+     * Associate the state with some objects.
+     */
+    associate : function (obj) {
+
+      // Check if the object has a setState() method
+      if (obj.hasOwnProperty("setState")) {
+        this._assoc.push(obj);
+        obj.setState(this.value);
+      } else {
+        console.log("Object " + obj + " has no setState() method");
+      }
+    },
+
+    /**
+     * Set the state to a certain value.
+     * This will set the state to all associated objects as well.
+     */
+    set : function (value) {
+      if (value != this.value) {
+        this.value = value;
+        for (let i in this._assoc) {
+          this._assoc[i].setState(value);
+        }
+      };
+    },
+
+    /**
+     * Get the state value
+     */
+    get : function () {
+      return this.value;
+    }
+  }
+});