Initial checkin of AOSP Messaging app.

b/23110861

Change-Id: I9aa980d7569247d6b2ca78f5dcb4502e1eaadb8a

1 files changed, 88 insertions, 0 deletions

diff --git a/src/android/support/v7/mms/DefaultUserAgentInfoLoader.java b/src/android/support/v7/mms/DefaultUserAgentInfoLoader.java
new file mode 100644
index 0000000..e59a234
--- /dev/null
+++ b/src/android/support/v7/mms/DefaultUserAgentInfoLoader.java
@@ -0,0 +1,88 @@
+/*
+ * 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 android.support.v7.mms;
+
+import android.content.Context;
+import android.telephony.TelephonyManager;
+import android.text.TextUtils;
+import android.util.Log;
+
+/**
+ * The default implementation of loader of UA and UAProfUrl
+ */
+class DefaultUserAgentInfoLoader implements UserAgentInfoLoader {
+    // Default values to be used as user agent info
+    private static final String DEFAULT_USER_AGENT = "Android MmsLib/1.0";
+    private static final String DEFAULT_UA_PROF_URL =
+            "http://www.gstatic.com/android/sms/mms_ua_profile.xml";
+
+    private Context mContext;
+    private boolean mLoaded;
+
+    private String mUserAgent;
+    private String mUAProfUrl;
+
+    DefaultUserAgentInfoLoader(final Context context) {
+        mContext = context;
+    }
+
+    @Override
+    public String getUserAgent() {
+        load();
+        return mUserAgent;
+    }
+
+    @Override
+    public String getUAProfUrl() {
+        load();
+        return mUAProfUrl;
+    }
+
+    private void load() {
+        if (mLoaded) {
+            return;
+        }
+        boolean didLoad = false;
+        synchronized (this) {
+            if (!mLoaded) {
+                loadLocked();
+                mLoaded = true;
+                didLoad = true;
+            }
+        }
+        if (didLoad) {
+            Log.i(MmsService.TAG, "Loaded user agent info: "
+                    + "UA=" + mUserAgent + ", UAProfUrl=" + mUAProfUrl);
+        }
+    }
+
+    private void loadLocked() {
+        if (Utils.hasUserAgentApi()) {
+            // load the MMS User agent and UaProfUrl from TelephonyManager APIs
+            final TelephonyManager telephonyManager = (TelephonyManager) mContext.getSystemService(
+                    Context.TELEPHONY_SERVICE);
+            mUserAgent = telephonyManager.getMmsUserAgent();
+            mUAProfUrl = telephonyManager.getMmsUAProfUrl();
+        }
+        if (TextUtils.isEmpty(mUserAgent)) {
+            mUserAgent = DEFAULT_USER_AGENT;
+        }
+        if (TextUtils.isEmpty(mUAProfUrl)) {
+            mUAProfUrl = DEFAULT_UA_PROF_URL;
+        }
+    }
+}