1 files changed, 70 insertions, 0 deletions
diff --git a/java/com/android/voicemail/impl/SubscriptionInfoHelper.java b/java/com/android/voicemail/impl/SubscriptionInfoHelper.java
new file mode 100644
index 000000000..d8a8423eb
--- /dev/null
+++ b/java/com/android/voicemail/impl/SubscriptionInfoHelper.java
@@ -0,0 +1,70 @@
+/**
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * <p>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
+ *
+ * <p>http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * <p>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.voicemail.impl;
+
+import android.app.ActionBar;
+import android.content.Context;
+import android.content.Intent;
+import android.content.res.Resources;
+import android.text.TextUtils;
+
+/**
+ * Helper for manipulating intents or components with subscription-related information.
+ *
+ * <p>In settings, subscription ids and labels are passed along to indicate that settings are being
+ * changed for particular subscriptions. This helper provides functions for helping extract this
+ * info and perform common operations using this info.
+ */
+public class SubscriptionInfoHelper {
+  public static final int NO_SUB_ID = -1;
+
+  // Extra on intent containing the id of a subscription.
+  public static final String SUB_ID_EXTRA =
+      "com.android.voicemailomtp.settings.SubscriptionInfoHelper.SubscriptionId";
+  // Extra on intent containing the label of a subscription.
+  private static final String SUB_LABEL_EXTRA =
+      "com.android.voicemailomtp.settings.SubscriptionInfoHelper.SubscriptionLabel";
+
+  private static Context mContext;
+
+  private static int mSubId = NO_SUB_ID;
+  private static String mSubLabel;
+
+  /** Instantiates the helper, by extracting the subscription id and label from the intent. */
+  public SubscriptionInfoHelper(Context context, Intent intent) {
+    mContext = context;
+    mSubId = intent.getIntExtra(SUB_ID_EXTRA, NO_SUB_ID);
+    mSubLabel = intent.getStringExtra(SUB_LABEL_EXTRA);
+  }
+
+  /**
+   * Sets the action bar title to the string specified by the given resource id, formatting it with
+   * the subscription label. This assumes the resource string is formattable with a string-type
+   * specifier.
+   *
+   * <p>If the subscription label does not exists, leave the existing title.
+   */
+  public void setActionBarTitle(ActionBar actionBar, Resources res, int resId) {
+    if (actionBar == null || TextUtils.isEmpty(mSubLabel)) {
+      return;
+    }
+
+    String title = String.format(res.getString(resId), mSubLabel);
+    actionBar.setTitle(title);
+  }
+
+  public int getSubId() {
+    return mSubId;
+  }
+}