1 files changed, 69 insertions, 0 deletions
diff --git a/WordPress/src/main/java/org/wordpress/android/models/ReaderTagList.java b/WordPress/src/main/java/org/wordpress/android/models/ReaderTagList.java
new file mode 100644
index 000000000..87464b722
--- /dev/null
+++ b/WordPress/src/main/java/org/wordpress/android/models/ReaderTagList.java
@@ -0,0 +1,69 @@
+package org.wordpress.android.models;
+
+import java.util.ArrayList;
+
+public class ReaderTagList extends ArrayList<ReaderTag> {
+
+    public int indexOfTagName(String tagName) {
+        if (tagName == null || isEmpty()) {
+            return -1;
+        }
+
+        for (int i = 0; i < size(); i++) {
+            if (tagName.equals(this.get(i).getTagSlug())) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    private int indexOfTag(ReaderTag tag) {
+        if (tag == null || isEmpty()) {
+            return -1;
+        }
+
+        for (int i = 0; i < this.size(); i++) {
+            if (ReaderTag.isSameTag(tag, this.get(i))) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+
+    public boolean isSameList(ReaderTagList otherList) {
+        if (otherList == null || otherList.size() != this.size()) {
+            return false;
+        }
+
+        for (ReaderTag otherTag: otherList) {
+            int i = this.indexOfTag(otherTag);
+            if (i == -1) {
+                return false;
+            } else if (!otherTag.getEndpoint().equals(this.get(i).getEndpoint())) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /*
+     * returns a list of tags that are in this list but not in the passed list
+     */
+    public ReaderTagList getDeletions(ReaderTagList otherList) {
+        ReaderTagList deletions = new ReaderTagList();
+        if (otherList == null) {
+            return deletions;
+        }
+
+        for (ReaderTag thisTag: this) {
+            if (otherList.indexOfTag(thisTag) == -1) {
+                deletions.add(thisTag);
+            }
+        }
+
+        return deletions;
+    }
+}