1 files changed, 109 insertions, 0 deletions
diff --git a/src/com/android/launcher3/dot/DotInfo.java b/src/com/android/launcher3/dot/DotInfo.java
new file mode 100644
index 000000000..9d0e5d38d
--- /dev/null
+++ b/src/com/android/launcher3/dot/DotInfo.java
@@ -0,0 +1,109 @@
+/*
+ * 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.dot;
+
+import com.android.launcher3.notification.NotificationInfo;
+import com.android.launcher3.notification.NotificationKeyData;
+import com.android.launcher3.util.PackageUserKey;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Contains data to be used for a notification dot.
+ */
+public class DotInfo {
+
+    public static final int MAX_COUNT = 999;
+
+    /** Used to link this DotInfo to icons on the workspace and all apps */
+    private PackageUserKey mPackageUserKey;
+
+    /**
+     * The keys of the notifications that this dot represents. These keys can later be
+     * used to retrieve {@link NotificationInfo}'s.
+     */
+    private List<NotificationKeyData> mNotificationKeys;
+
+    /**
+     * The current sum of the counts in {@link #mNotificationKeys},
+     * updated whenever a key is added or removed.
+     */
+    private int mTotalCount;
+
+    public DotInfo(PackageUserKey packageUserKey) {
+        mPackageUserKey = packageUserKey;
+        mNotificationKeys = new ArrayList<>();
+    }
+
+    /**
+     * Returns whether the notification was added or its count changed.
+     */
+    public boolean addOrUpdateNotificationKey(NotificationKeyData notificationKey) {
+        int indexOfPrevKey = mNotificationKeys.indexOf(notificationKey);
+        NotificationKeyData prevKey = indexOfPrevKey == -1 ? null
+                : mNotificationKeys.get(indexOfPrevKey);
+        if (prevKey != null) {
+            if (prevKey.count == notificationKey.count) {
+                return false;
+            }
+            // Notification was updated with a new count.
+            mTotalCount -= prevKey.count;
+            mTotalCount += notificationKey.count;
+            prevKey.count = notificationKey.count;
+            return true;
+        }
+        boolean added = mNotificationKeys.add(notificationKey);
+        if (added) {
+            mTotalCount += notificationKey.count;
+        }
+        return added;
+    }
+
+    /**
+     * Returns whether the notification was removed (false if it didn't exist).
+     */
+    public boolean removeNotificationKey(NotificationKeyData notificationKey) {
+        boolean removed = mNotificationKeys.remove(notificationKey);
+        if (removed) {
+            mTotalCount -= notificationKey.count;
+        }
+        return removed;
+    }
+
+    public List<NotificationKeyData> getNotificationKeys() {
+        return mNotificationKeys;
+    }
+
+    public int getNotificationCount() {
+        return Math.min(mTotalCount, MAX_COUNT);
+    }
+
+    /**
+     * TODO: this is outdated now that we only show dots instead of icons/numbers. can remove?
+     * Whether newDot represents the same PackageUserKey as this badge, and icons with
+     * this badge should be invalidated. So, for instance, if a badge has 3 notifications
+     * and one of those notifications is updated, this method should return false because
+     * the badge still says "3" and the contents of those notifications are only retrieved
+     * upon long-click. This method always returns true when adding or removing notifications,
+     * or if the badge has a notification icon to show.
+     */
+    public boolean shouldBeInvalidated(DotInfo newDot) {
+        return mPackageUserKey.equals(newDot.mPackageUserKey)
+                && (getNotificationCount() != newDot.getNotificationCount());
+    }
+}