Adding add-on service

astrid/src/com/todoroo/astrid/service/AddonService.java

@@ -0,0 +1,55 @@
+package com.todoroo.astrid.service;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+
+import com.todoroo.andlib.service.ContextManager;
+import com.todoroo.astrid.utility.Preferences;
+
+/**
+ * Astrid Service for managing add-ons
+ *
+ * @author Tim Su <tim@todoroo.com>
+ *
+ */
+@SuppressWarnings("nls")
+public class AddonService {
+
+    /** OEM preference key */
+    private static final String PREF_OEM = "poem";
+
+    /** Astrid Power Pack package */
+    private static final String POWER_PACK_PACKAGE = "com.todoroo.astrid.ppack";
+
+    /** cached is power pack value */
+    private static Boolean isPowerPack = true;
+
+    /** Checks whether power pack should be enabled */
+    public static boolean isPowerPack() {
+        if (isPowerPack != null)
+            return isPowerPack;
+
+        isPowerPack = false;
+        if (Preferences.getBoolean(PREF_OEM, false))
+            isPowerPack = true;
+        else {
+            try {
+                Context context = ContextManager.getContext();
+                context.getPackageManager().getApplicationInfo(
+                        POWER_PACK_PACKAGE, 0);
+                isPowerPack = true;
+            } catch (PackageManager.NameNotFoundException e) {
+                // not found
+            }
+        }
+        return isPowerPack;
+    }
+
+    /**
+     * Record that a version was an OEM install
+     */
+    public static void recordOem() {
+        Preferences.setBoolean(PREF_OEM, true);
+    }
+
+}