From 091f25d4758ee7163bd4c5c4417fd88162cb58c0 Mon Sep 17 00:00:00 2001
From: serso <se.solovyev@gmail.com>
Date: Sun, 16 Oct 2011 15:28:46 +0400
Subject: [PATCH] fix for calculator history equals

---
 .../calculator/CalculatorHistoryState.java    | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/main/java/org/solovyev/android/calculator/CalculatorHistoryState.java b/src/main/java/org/solovyev/android/calculator/CalculatorHistoryState.java
index 7fe27eea..f91977b6 100644
--- a/src/main/java/org/solovyev/android/calculator/CalculatorHistoryState.java
+++ b/src/main/java/org/solovyev/android/calculator/CalculatorHistoryState.java
@@ -51,4 +51,24 @@ public class CalculatorHistoryState extends AbstractHistoryState{
 				", displayState=" + displayState +
 				'}';
 	}
+
+	@Override
+	public boolean equals(Object o) {
+		if (this == o) return true;
+		if (o == null || getClass() != o.getClass()) return false;
+
+		CalculatorHistoryState that = (CalculatorHistoryState) o;
+
+		if (!displayState.equals(that.displayState)) return false;
+		if (!editorState.equals(that.editorState)) return false;
+
+		return true;
+	}
+
+	@Override
+	public int hashCode() {
+		int result = editorState.hashCode();
+		result = 31 * result + displayState.hashCode();
+		return result;
+	}
 }