1 files changed, 157 insertions, 0 deletions
diff --git a/library/main/src/com/android/setupwizardlib/util/Partner.java b/library/main/src/com/android/setupwizardlib/util/Partner.java
new file mode 100644
index 0000000..5a81d4c
--- /dev/null
+++ b/library/main/src/com/android/setupwizardlib/util/Partner.java
@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2015 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.setupwizardlib.util;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.pm.ResolveInfo;
+import android.content.res.Resources;
+import android.graphics.drawable.Drawable;
+import android.util.Log;
+
+import com.android.annotations.VisibleForTesting;
+
+/**
+ * Utilities to discover and interact with partner customizations. There can only be one set of
+ * customizations on a device, and it must be bundled with the system.
+ *
+ * Derived from com.android.launcher3/Partner.java
+ */
+public class Partner {
+    private static final String TAG = "(SUW) Partner";
+
+    /** Marker action used to discover partner */
+    private static final String
+            ACTION_PARTNER_CUSTOMIZATION = "com.android.setupwizard.action.PARTNER_CUSTOMIZATION";
+
+    private static boolean sSearched = false;
+    private static Partner sPartner;
+
+    /**
+     * Convenience to get a drawable from partner overlay, or if not available, the drawable from
+     * the original context.
+     *
+     * @see #getResourceEntry(android.content.Context, int)
+     */
+    public static Drawable getDrawable(Context context, int id) {
+        final ResourceEntry entry = getResourceEntry(context, id);
+        return entry.resources.getDrawable(entry.id);
+    }
+
+    /**
+     * Convenience to get a string from partner overlay, or if not available, the string from the
+     * original context.
+     *
+     * @see #getResourceEntry(android.content.Context, int)
+     */
+    public static String getString(Context context, int id) {
+        final ResourceEntry entry = getResourceEntry(context, id);
+        return entry.resources.getString(entry.id);
+    }
+
+    /**
+     * Find an entry of resource in the overlay package provided by partners. It will first look for
+     * the resource in the overlay package, and if not available, will return the one in the
+     * original context.
+     *
+     * @return a ResourceEntry in the partner overlay's resources, if one is defined. Otherwise the
+     * resources from the original context is returned. Clients can then get the resource by
+     * {@code entry.resources.getString(entry.id)}, or other methods available in
+     * {@link android.content.res.Resources}.
+     */
+    public static ResourceEntry getResourceEntry(Context context, int id) {
+        final Partner partner = Partner.get(context);
+        if (partner == null) {
+            return new ResourceEntry(context.getResources(), id);
+        } else {
+            final Resources ourResources = context.getResources();
+            final String name = ourResources.getResourceEntryName(id);
+            final String type = ourResources.getResourceTypeName(id);
+            final int partnerId = partner.getIdentifier(name, type);
+            return new ResourceEntry(partner.mResources, partnerId);
+        }
+    }
+
+    public static class ResourceEntry {
+        public Resources resources;
+        public int id;
+
+        ResourceEntry(Resources resources, int id) {
+            this.resources = resources;
+            this.id = id;
+        }
+    }
+
+    /**
+     * Find and return partner details, or {@code null} if none exists. A partner package is marked
+     * by a broadcast receiver declared in the manifest that handles the
+     * com.android.setupwizard.action.PARTNER_CUSTOMIZATION intent action. The overlay package must
+     * also be a system package.
+     */
+    public static synchronized Partner get(Context context) {
+        if (!sSearched) {
+            PackageManager pm = context.getPackageManager();
+            final Intent intent = new Intent(ACTION_PARTNER_CUSTOMIZATION);
+            for (ResolveInfo info : pm.queryBroadcastReceivers(intent, 0)) {
+                if (info.activityInfo == null) {
+                    continue;
+                }
+                final ApplicationInfo appInfo = info.activityInfo.applicationInfo;
+                if ((appInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
+                    try {
+                        final Resources res = pm.getResourcesForApplication(appInfo);
+                        sPartner = new Partner(appInfo.packageName, res);
+                        break;
+                    } catch (NameNotFoundException e) {
+                        Log.w(TAG, "Failed to find resources for " + appInfo.packageName);
+                    }
+                }
+            }
+            sSearched = true;
+        }
+        return sPartner;
+    }
+
+    @VisibleForTesting
+    public static synchronized void resetForTesting() {
+        sSearched = false;
+        sPartner = null;
+    }
+
+    private final String mPackageName;
+    private final Resources mResources;
+
+    private Partner(String packageName, Resources res) {
+        mPackageName = packageName;
+        mResources = res;
+    }
+
+    public String getPackageName() {
+        return mPackageName;
+    }
+
+    public Resources getResources() {
+        return mResources;
+    }
+
+    public int getIdentifier(String name, String defType) {
+        return mResources.getIdentifier(name, defType, mPackageName);
+    }
+}