move all comparators to a new package

extract interface and common implementation details of sorting

1 files changed, 25 insertions, 0 deletions

diff --git a/src/cgeo/geocaching/sorting/DifficultyComparator.java b/src/cgeo/geocaching/sorting/DifficultyComparator.java
new file mode 100644
index 0000000..cb16b7c
--- /dev/null
+++ b/src/cgeo/geocaching/sorting/DifficultyComparator.java
@@ -0,0 +1,25 @@
+package cgeo.geocaching.sorting;
+
+import cgeo.geocaching.cgCache;
+
+/**
+ * sorts caches by difficulty
+ *
+ */
+public class DifficultyComparator extends AbstractCacheComparator {
+
+	@Override
+	protected boolean canCompare(cgCache cache1, cgCache cache2) {
+		return cache1.difficulty != null && cache2.difficulty != null;
+	}
+
+	@Override
+	protected int compareCaches(final cgCache cache1, final cgCache cache2) {
+		if (cache1.difficulty > cache2.difficulty) {
+			return 1;
+		} else if (cache2.difficulty > cache1.difficulty) {
+			return -1;
+		}
+		return 0;
+	}
+}
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