Add support for launcher shortcuts.

- This CL has no UI but provides the necessary backing for one.
- Adds new item type: ITEM_TYPE_DEEP_SHORTCUT, to distinguish from
  ITEM_TYPE_SHORTCUT. We can reconsider these names.
- Adds ShortcutCache, using LruCache for up to 30 dynamic shortcuts
  (pinned shortcuts are always cached in a HashMap).
- DeepShortcutManager queries for shortcuts and other things like
  pin them. In a future CL it will use the cache, but for now it
  simply makes an RPC for all queries.
- LauncherModel maintains counts for pinned shortcuts, pinning and
  unpinning when counts reach 1 or 0, respectively.
- LauncherModel maintains a map of components to lists of shortcut ids,
  which Launcher gets a copy of after it is changed in the background.
  This will allow us to know how many shortcuts an app has immediately,
  and query for details as the UI is animating.

Change-Id: Ic526f374dd10d72a261bae67f07f098fca8d8bca

1 files changed, 136 insertions, 0 deletions

diff --git a/src/com/android/launcher3/shortcuts/DeepShortcutManager.java b/src/com/android/launcher3/shortcuts/DeepShortcutManager.java
new file mode 100644
index 000000000..e2e06af9a
--- /dev/null
+++ b/src/com/android/launcher3/shortcuts/DeepShortcutManager.java
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2016 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.shortcuts;
+
+import android.annotation.TargetApi;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.pm.LauncherApps.ShortcutQuery;
+import android.os.Build;
+import android.os.Process;
+import android.util.Log;
+
+import com.android.launcher3.compat.LauncherAppsCompat;
+import com.android.launcher3.compat.UserHandleCompat;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Performs operations related to deep shortcuts, such as querying for them, pinning them, etc.
+ */
+@TargetApi(Build.VERSION_CODES.N)
+public class DeepShortcutManager {
+    private static final int FLAG_GET_ALL = ShortcutQuery.FLAG_GET_DYNAMIC
+            | ShortcutQuery.FLAG_GET_PINNED | ShortcutQuery.FLAG_GET_MANIFEST;
+
+    private final LauncherAppsCompat mLauncherApps;
+
+    public DeepShortcutManager(Context context, ShortcutCache shortcutCache) {
+        mLauncherApps = LauncherAppsCompat.getInstance(context);
+    }
+
+    public void onShortcutsChanged(List<ShortcutInfoCompat> shortcuts) {
+        // mShortcutCache.removeShortcuts(shortcuts);
+    }
+
+    /**
+     * Queries for the shortcuts with the package name and provided ids.
+     *
+     * This method is intended to get the full details for shortcuts when they are added or updated,
+     * because we only get "key" fields in onShortcutsChanged().
+     */
+    public List<ShortcutInfoCompat> queryForFullDetails(String packageName,
+            List<String> shortcutIds, UserHandleCompat user) {
+        return query(FLAG_GET_ALL, packageName, null, shortcutIds, user);
+    }
+
+    /**
+     * Gets all the shortcuts associated with the given package and user.
+     */
+    public List<ShortcutInfoCompat> queryForAllAppShortcuts(ComponentName activity,
+            List<String> ids, UserHandleCompat user) {
+        return query(FLAG_GET_ALL, activity.getPackageName(), activity, ids, user);
+    }
+
+    /**
+     * Removes the given shortcut from the current list of pinned shortcuts.
+     * (Runs on background thread)
+     */
+    public void unpinShortcut(final ShortcutKey key) {
+        String packageName = key.componentName.getPackageName();
+        String id = key.id;
+        UserHandleCompat user = key.user;
+        List<String> pinnedIds = extractIds(queryForPinnedShortcuts(packageName, user));
+        pinnedIds.remove(id);
+        mLauncherApps.pinShortcuts(packageName, pinnedIds, user);
+    }
+
+    /**
+     * Adds the given shortcut to the current list of pinned shortcuts.
+     * (Runs on background thread)
+     */
+    public void pinShortcut(final ShortcutKey key) {
+        String packageName = key.componentName.getPackageName();
+        String id = key.id;
+        UserHandleCompat user = key.user;
+        List<String> pinnedIds = extractIds(queryForPinnedShortcuts(packageName, user));
+        pinnedIds.add(id);
+        mLauncherApps.pinShortcuts(packageName, pinnedIds, user);
+    }
+
+    /**
+     * Returns the id's of pinned shortcuts associated with the given package and user.
+     *
+     * If packageName is null, returns all pinned shortcuts regardless of package.
+     */
+    public List<ShortcutInfoCompat> queryForPinnedShortcuts(String packageName,
+            UserHandleCompat user) {
+        return query(ShortcutQuery.FLAG_GET_PINNED, packageName, null, null, user);
+    }
+
+    public List<ShortcutInfoCompat> queryForAllShortcuts(UserHandleCompat user) {
+        return query(FLAG_GET_ALL, null, null, null, user);
+    }
+
+    private List<String> extractIds(List<ShortcutInfoCompat> shortcuts) {
+        List<String> shortcutIds = new ArrayList<>(shortcuts.size());
+        for (ShortcutInfoCompat shortcut : shortcuts) {
+            shortcutIds.add(shortcut.getId());
+        }
+        return shortcutIds;
+    }
+
+    /**
+     * Query the system server for all the shortcuts matching the given parameters.
+     * If packageName == null, we query for all shortcuts with the passed flags, regardless of app.
+     *
+     * TODO: Use the cache to optimize this so we don't make an RPC every time.
+     */
+    private List<ShortcutInfoCompat> query(int flags, String packageName,
+            ComponentName activity, List<String> shortcutIds, UserHandleCompat user) {
+        ShortcutQuery q = new ShortcutQuery();
+        q.setQueryFlags(flags);
+        if (packageName != null) {
+            q.setPackage(packageName);
+            q.setActivity(activity);
+            q.setShortcutIds(shortcutIds);
+        }
+        return mLauncherApps.getShortcuts(q, user);
+    }
+}