1 files changed, 175 insertions, 0 deletions
diff --git a/java/com/android/voicemail/impl/configui/ConfigOverrideFragment.java b/java/com/android/voicemail/impl/configui/ConfigOverrideFragment.java
new file mode 100644
index 000000000..18b2b9274
--- /dev/null
+++ b/java/com/android/voicemail/impl/configui/ConfigOverrideFragment.java
@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2017 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.voicemail.impl.configui;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.os.PersistableBundle;
+import android.preference.EditTextPreference;
+import android.preference.Preference;
+import android.preference.Preference.OnPreferenceChangeListener;
+import android.preference.PreferenceFragment;
+import android.preference.PreferenceManager;
+import android.preference.PreferenceScreen;
+import android.preference.SwitchPreference;
+import android.support.annotation.Nullable;
+import android.support.annotation.VisibleForTesting;
+import android.telecom.PhoneAccount;
+import android.telecom.PhoneAccountHandle;
+import android.telecom.TelecomManager;
+import android.text.TextUtils;
+import com.android.dialer.common.Assert;
+import com.android.dialer.common.concurrent.ThreadUtil;
+import com.android.voicemail.VoicemailComponent;
+
+/**
+ * Fragment to edit the override values for the {@link import
+ * com.android.voicemail.impl.OmtpVvmCarrierConfigHelper}
+ */
+public class ConfigOverrideFragment extends PreferenceFragment
+    implements OnPreferenceChangeListener {
+
+  /**
+   * Any preference with key that starts with this prefix will be written to the dialer carrier
+   * config.
+   */
+  @VisibleForTesting static final String CONFIG_OVERRIDE_KEY_PREFIX = "vvm_config_override_key_";
+
+  @Override
+  public void onCreate(@Nullable Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    PreferenceManager.setDefaultValues(getActivity(), R.xml.vvm_config_override, false);
+    addPreferencesFromResource(R.xml.vvm_config_override);
+
+    // add listener so the value of a EditTextPreference will be updated to the summary.
+    for (int i = 0; i < getPreferenceScreen().getPreferenceCount(); i++) {
+      Preference preference = getPreferenceScreen().getPreference(i);
+      preference.setOnPreferenceChangeListener(this);
+      updatePreference(preference);
+    }
+  }
+
+  @Override
+  public boolean onPreferenceChange(Preference preference, Object newValue) {
+    Assert.isMainThread();
+    ThreadUtil.postOnUiThread(() -> updatePreference(preference));
+    return true;
+  }
+
+  private void updatePreference(Preference preference) {
+    if (preference instanceof EditTextPreference) {
+      EditTextPreference editTextPreference = (EditTextPreference) preference;
+      editTextPreference.setSummary(editTextPreference.getText());
+    }
+  }
+
+  @Override
+  public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
+    if (TextUtils.equals(
+        preference.getKey(), getString(R.string.vvm_config_override_load_current_key))) {
+      loadCurrentConfig();
+    }
+    return super.onPreferenceTreeClick(preferenceScreen, preference);
+  }
+
+  /**
+   * Loads the config for the currently carrier into the override values, from the dialer or the
+   * carrier config app. This is a "reset" button to load the defaults.
+   */
+  private void loadCurrentConfig() {
+    Context context = getActivity();
+    PhoneAccountHandle phoneAccountHandle =
+        context
+            .getSystemService(TelecomManager.class)
+            .getDefaultOutgoingPhoneAccount(PhoneAccount.SCHEME_VOICEMAIL);
+
+    PersistableBundle config =
+        VoicemailComponent.get(context).getVoicemailClient().getConfig(context, phoneAccountHandle);
+
+    for (int i = 0; i < getPreferenceScreen().getPreferenceCount(); i++) {
+      Preference preference = getPreferenceScreen().getPreference(i);
+      String key = preference.getKey();
+      if (!key.startsWith(CONFIG_OVERRIDE_KEY_PREFIX)) {
+        continue;
+      }
+
+      String configKey = key.substring(CONFIG_OVERRIDE_KEY_PREFIX.length());
+
+      if (configKey.endsWith("bool")) {
+        ((SwitchPreference) preference).setChecked(config.getBoolean(configKey));
+      } else if (configKey.endsWith("int")) {
+        ((EditTextPreference) preference).setText(String.valueOf(config.getInt(configKey)));
+      } else if (configKey.endsWith("string")) {
+        ((EditTextPreference) preference).setText(config.getString(configKey));
+      } else if (configKey.endsWith("string_array")) {
+        ((EditTextPreference) preference).setText(toCsv(config.getStringArray(configKey)));
+      } else {
+        throw Assert.createAssertionFailException("unknown type for key " + configKey);
+      }
+      updatePreference(preference);
+    }
+  }
+
+  public static boolean isOverridden(Context context) {
+    return PreferenceManager.getDefaultSharedPreferences(context)
+        .getBoolean(context.getString(R.string.vvm_config_override_enabled_key), false);
+  }
+
+  public static PersistableBundle getConfig(Context context) {
+    Assert.checkState(isOverridden(context));
+    PersistableBundle result = new PersistableBundle();
+
+    SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+    for (String key : preferences.getAll().keySet()) {
+      if (!key.startsWith(CONFIG_OVERRIDE_KEY_PREFIX)) {
+        continue;
+      }
+      String configKey = key.substring(CONFIG_OVERRIDE_KEY_PREFIX.length());
+      if (configKey.endsWith("bool")) {
+        result.putBoolean(configKey, preferences.getBoolean(key, false));
+      } else if (configKey.endsWith("int")) {
+        result.putInt(configKey, Integer.valueOf(preferences.getString(key, null)));
+      } else if (configKey.endsWith("string")) {
+        result.putString(configKey, preferences.getString(key, null));
+      } else if (configKey.endsWith("string_array")) {
+        result.putStringArray(configKey, fromCsv(preferences.getString(key, null)));
+      } else {
+        throw Assert.createAssertionFailException("unknown type for key " + configKey);
+      }
+    }
+    return result;
+  }
+
+  private static String toCsv(String[] array) {
+    if (array == null) {
+      return "";
+    }
+    StringBuilder result = new StringBuilder();
+    for (String element : array) {
+      if (result.length() != 0) {
+        result.append(",");
+      }
+      result.append(element);
+    }
+    return result.toString();
+  };
+
+  private static String[] fromCsv(String csv) {
+    return csv.split(",");
+  }
+}