Adding AppsStore for handling various app updates

Change-Id: Ia2242ce583576ace0924ef7142793ba37f4adcb9

src/com/android/launcher3/allapps/AllAppsStore.java

@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2018 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.allapps;
+
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.android.launcher3.AppInfo;
+import com.android.launcher3.BubbleTextView;
+import com.android.launcher3.util.ComponentKey;
+import com.android.launcher3.util.ComponentKeyMapper;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+
+/**
+ * A utility class to maintain the collection of all apps.
+ */
+public class AllAppsStore {
+
+    private final HashMap<ComponentKey, AppInfo> mComponentToAppMap = new HashMap<>();
+    private final List<OnUpdateListener> mUpdateListeners = new ArrayList<>();
+    private final ArrayList<ViewGroup> mIconContainers = new ArrayList<>();
+
+    public Collection<AppInfo> getApps() {
+        return mComponentToAppMap.values();
+    }
+
+    /**
+     * Sets the current set of apps.
+     */
+    public void setApps(List<AppInfo> apps) {
+        mComponentToAppMap.clear();
+        addOrUpdateApps(apps);
+    }
+
+    public AppInfo getApp(ComponentKey key) {
+        return mComponentToAppMap.get(key);
+    }
+
+    public AppInfo getApp(ComponentKeyMapper<AppInfo> mapper) {
+        return mapper.getItem(mComponentToAppMap);
+    }
+
+    /**
+     * Adds or updates existing apps in the list
+     */
+    public void addOrUpdateApps(List<AppInfo> apps) {
+        for (AppInfo app : apps) {
+            mComponentToAppMap.put(app.toComponentKey(), app);
+        }
+        notifyUpdate();
+    }
+
+    /**
+     * Removes some apps from the list.
+     */
+    public void removeApps(List<AppInfo> apps) {
+        for (AppInfo app : apps) {
+            mComponentToAppMap.remove(app.toComponentKey());
+        }
+        notifyUpdate();
+    }
+
+
+    private void notifyUpdate() {
+        int count = mUpdateListeners.size();
+        for (int i = 0; i < count; i++) {
+            mUpdateListeners.get(i).onAppsUpdated();
+        }
+    }
+
+    public void addUpdateListener(OnUpdateListener listener) {
+        mUpdateListeners.add(listener);
+    }
+
+    public void removeUpdateListener(OnUpdateListener listener) {
+        mUpdateListeners.remove(listener);
+    }
+
+    public void registerIconContainer(ViewGroup container) {
+        if (container != null) {
+            mIconContainers.add(container);
+        }
+    }
+
+    public void unregisterIconContainer(ViewGroup container) {
+        mIconContainers.remove(container);
+    }
+
+    public void updateAllIcons(IconAction action) {
+        for (int i = mIconContainers.size() - 1; i >= 0; i--) {
+            ViewGroup parent = mIconContainers.get(i);
+            int childCount = parent.getChildCount();
+
+            for (int j = 0; j < childCount; j++) {
+                View child = parent.getChildAt(j);
+                if (child instanceof BubbleTextView) {
+                    action.apply((BubbleTextView) child);
+                }
+            }
+        }
+    }
+
+    public interface OnUpdateListener {
+        void onAppsUpdated();
+    }
+
+    public interface IconAction {
+        void apply(BubbleTextView icon);
+    }
+}