Add badges to folders

- The folder badge contains the sum of the badge counts within.
- This is represented by FolderBadgeInfo, a subclass of BadgeInfo.

Bug: 34828806
Bug: 32410600
Change-Id: I977a69cc7baf80a7207af9adf98dddb0a3509c47

1 files changed, 60 insertions, 0 deletions

diff --git a/src/com/android/launcher3/badge/FolderBadgeInfo.java b/src/com/android/launcher3/badge/FolderBadgeInfo.java
new file mode 100644
index 000000000..4d1e5c203
--- /dev/null
+++ b/src/com/android/launcher3/badge/FolderBadgeInfo.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.badge;
+
+import com.android.launcher3.Utilities;
+
+import static com.android.launcher3.Utilities.boundToRange;
+
+/**
+ * Subclass of BadgeInfo that only contains the badge count,
+ * which is the sum of all the Folder's items' counts.
+ */
+public class FolderBadgeInfo extends BadgeInfo {
+
+    private static final int MIN_COUNT = 0;
+    private static final int MAX_COUNT = 999;
+
+    private int mTotalNotificationCount;
+
+    public FolderBadgeInfo() {
+        super(null);
+    }
+
+    public void addBadgeInfo(BadgeInfo badgeToAdd) {
+        if (badgeToAdd == null) {
+            return;
+        }
+        mTotalNotificationCount += badgeToAdd.getNotificationCount();
+        mTotalNotificationCount = Utilities.boundToRange(
+                mTotalNotificationCount, MIN_COUNT, MAX_COUNT);
+    }
+
+    public void subtractBadgeInfo(BadgeInfo badgeToSubtract) {
+        if (badgeToSubtract == null) {
+            return;
+        }
+        mTotalNotificationCount -= badgeToSubtract.getNotificationCount();
+        mTotalNotificationCount = Utilities.boundToRange(
+                mTotalNotificationCount, MIN_COUNT, MAX_COUNT);
+    }
+
+    @Override
+    public int getNotificationCount() {
+        return mTotalNotificationCount;
+    }
+}