1 files changed, 26 insertions, 0 deletions
diff --git a/app/src/main/java/net/lacolaco/smileessence/util/UIObserverBundle.kt b/app/src/main/java/net/lacolaco/smileessence/util/UIObserverBundle.kt
new file mode 100644
index 00000000..f6c8403b
--- /dev/null
+++ b/app/src/main/java/net/lacolaco/smileessence/util/UIObserverBundle.kt
@@ -0,0 +1,26 @@
+package net.lacolaco.smileessence.util
+
+import net.lacolaco.smileessence.entity.RBinding
+import java.util.*
+
+// UIObserver と UIObservable のセットを管理するオブジェクトだよ〜〜
+class UIObserverBundle {
+    private val map = HashMap<UIObservable, (EnumSet<RBinding>) -> Unit>()
+
+    fun detachAll() {
+        for ((key) in map) {
+            key.removeObserver(this)
+        }
+        map.clear()
+    }
+
+    fun attach(observable: UIObservable, observer: (EnumSet<RBinding>) -> Unit): (EnumSet<RBinding>) -> Unit {
+        observable.addObserver(this, observer)
+        map.put(observable, observer)
+        return observer
+    }
+
+    protected fun finalize() {
+        detachAll()
+    }
+}