Revert "Remove dialer sounds and vibrations settings fragments and redirect to the system sound settings fragment instead."

We add additional settings to this fragment, so the stated reasons for
removing it don't apply to us.

This reverts commit c378fb17f0ae994b950273e0f91b5692ad7638cf.

Change-Id: I0a8bd3135c43627d4355cc5c01c1144a03518144

2 files changed, 246 insertions, 15 deletions

diff --git a/java/com/android/dialer/app/settings/DialerSettingsActivity.java b/java/com/android/dialer/app/settings/DialerSettingsActivity.java
index d9bcd6ba5..cdea6faa5 100644
--- a/java/com/android/dialer/app/settings/DialerSettingsActivity.java
+++ b/java/com/android/dialer/app/settings/DialerSettingsActivity.java
@@ -102,6 +102,7 @@ public class DialerSettingsActivity extends AppCompatPreferenceActivity {
 
     Header soundSettingsHeader = new Header();
     soundSettingsHeader.titleRes = R.string.sounds_and_vibration_title;
+    soundSettingsHeader.fragment = SoundSettingsFragment.class.getName();
     soundSettingsHeader.id = R.id.settings_header_sounds_and_vibration;
     target.add(soundSettingsHeader);
 
@@ -271,32 +272,22 @@ public class DialerSettingsActivity extends AppCompatPreferenceActivity {
         && getResources().getBoolean(R.bool.config_sort_order_user_changeable);
   }
 
-  /**
-   * For the "sounds and vibration" setting, we go directly to the system sound settings fragment.
-   * This helps since:
-   * <li>We don't need a separate Dialer sounds and vibrations fragment, as everything we need is
-   *     present in the system sounds fragment.
-   * <li>OEM's e.g Moto that support dual sim ring-tones no longer need to update the dialer sound
-   *     and settings fragment.
-   *
-   *     <p>For all other settings, we launch our our preferences fragment.
-   */
   @Override
   public void onHeaderClick(Header header, int position) {
     if (header.id == R.id.settings_header_sounds_and_vibration) {
-
+      // If we don't have the permission to write to system settings, go to system sound
+      // settings instead. Otherwise, perform the super implementation (which launches our
+      // own preference fragment.
       if (!Settings.System.canWrite(this)) {
         Toast.makeText(
                 this,
                 getResources().getString(R.string.toast_cannot_write_system_settings),
                 Toast.LENGTH_SHORT)
             .show();
+        startActivity(new Intent(Settings.ACTION_SOUND_SETTINGS));
+        return;
       }
-
-      startActivity(new Intent(Settings.ACTION_SOUND_SETTINGS));
-      return;
     }
-
     super.onHeaderClick(header, position);
   }
 
diff --git a/java/com/android/dialer/app/settings/SoundSettingsFragment.java b/java/com/android/dialer/app/settings/SoundSettingsFragment.java
new file mode 100644
index 000000000..9d564416c
--- /dev/null
+++ b/java/com/android/dialer/app/settings/SoundSettingsFragment.java
@@ -0,0 +1,240 @@
+/*
+ * Copyright (C) 2014 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.dialer.app.settings;
+
+import android.content.Context;
+import android.media.RingtoneManager;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.os.Vibrator;
+import android.preference.ListPreference;
+import android.preference.Preference;
+import android.preference.PreferenceFragment;
+import android.preference.PreferenceScreen;
+import android.preference.SwitchPreference;
+import android.provider.Settings;
+import android.telephony.CarrierConfigManager;
+import android.telephony.TelephonyManager;
+import android.widget.Toast;
+import com.android.dialer.app.R;
+import com.android.dialer.util.SettingsUtil;
+
+public class SoundSettingsFragment extends PreferenceFragment
+    implements Preference.OnPreferenceChangeListener {
+
+  private static final int NO_DTMF_TONE = 0;
+  private static final int PLAY_DTMF_TONE = 1;
+
+  private static final int NO_VIBRATION_FOR_CALLS = 0;
+  private static final int DO_VIBRATION_FOR_CALLS = 1;
+
+  private static final int DTMF_TONE_TYPE_NORMAL = 0;
+
+  private static final int MSG_UPDATE_RINGTONE_SUMMARY = 1;
+
+  private Preference ringtonePreference;
+  private final Handler ringtoneLookupComplete =
+      new Handler() {
+        @Override
+        public void handleMessage(Message msg) {
+          switch (msg.what) {
+            case MSG_UPDATE_RINGTONE_SUMMARY:
+              ringtonePreference.setSummary((CharSequence) msg.obj);
+              break;
+          }
+        }
+      };
+  private final Runnable ringtoneLookupRunnable =
+      new Runnable() {
+        @Override
+        public void run() {
+          updateRingtonePreferenceSummary();
+        }
+      };
+  private SwitchPreference vibrateWhenRinging;
+  private SwitchPreference playDtmfTone;
+  private ListPreference dtmfToneLength;
+
+  @Override
+  public Context getContext() {
+    return getActivity();
+  }
+
+  @Override
+  public void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+
+    addPreferencesFromResource(R.xml.sound_settings);
+
+    Context context = getActivity();
+
+    ringtonePreference = findPreference(context.getString(R.string.ringtone_preference_key));
+    vibrateWhenRinging =
+        (SwitchPreference) findPreference(context.getString(R.string.vibrate_on_preference_key));
+    playDtmfTone =
+        (SwitchPreference) findPreference(context.getString(R.string.play_dtmf_preference_key));
+    dtmfToneLength =
+        (ListPreference)
+            findPreference(context.getString(R.string.dtmf_tone_length_preference_key));
+
+    if (hasVibrator()) {
+      vibrateWhenRinging.setOnPreferenceChangeListener(this);
+    } else {
+      getPreferenceScreen().removePreference(vibrateWhenRinging);
+      vibrateWhenRinging = null;
+    }
+
+    playDtmfTone.setOnPreferenceChangeListener(this);
+    playDtmfTone.setChecked(shouldPlayDtmfTone());
+
+    TelephonyManager telephonyManager =
+        (TelephonyManager) getActivity().getSystemService(Context.TELEPHONY_SERVICE);
+    if (telephonyManager.canChangeDtmfToneLength()
+        && (telephonyManager.isWorldPhone() || !shouldHideCarrierSettings())) {
+      dtmfToneLength.setOnPreferenceChangeListener(this);
+      dtmfToneLength.setValueIndex(
+          Settings.System.getInt(
+              context.getContentResolver(),
+              Settings.System.DTMF_TONE_TYPE_WHEN_DIALING,
+              DTMF_TONE_TYPE_NORMAL));
+    } else {
+      getPreferenceScreen().removePreference(dtmfToneLength);
+      dtmfToneLength = null;
+    }
+  }
+
+  @Override
+  public void onResume() {
+    super.onResume();
+
+    if (!Settings.System.canWrite(getContext())) {
+      // If the user launches this setting fragment, then toggles the WRITE_SYSTEM_SETTINGS
+      // AppOp, then close the fragment since there is nothing useful to do.
+      getActivity().onBackPressed();
+      return;
+    }
+
+    if (vibrateWhenRinging != null) {
+      vibrateWhenRinging.setChecked(shouldVibrateWhenRinging());
+    }
+
+    // Lookup the ringtone name asynchronously.
+    new Thread(ringtoneLookupRunnable).start();
+  }
+
+  /**
+   * Supports onPreferenceChangeListener to look for preference changes.
+   *
+   * @param preference The preference to be changed
+   * @param objValue The value of the selection, NOT its localized display value.
+   */
+  @Override
+  public boolean onPreferenceChange(Preference preference, Object objValue) {
+    if (!Settings.System.canWrite(getContext())) {
+      // A user shouldn't be able to get here, but this protects against monkey crashes.
+      Toast.makeText(
+              getContext(),
+              getResources().getString(R.string.toast_cannot_write_system_settings),
+              Toast.LENGTH_SHORT)
+          .show();
+      return true;
+    }
+    if (preference == vibrateWhenRinging) {
+      boolean doVibrate = (Boolean) objValue;
+      Settings.System.putInt(
+          getActivity().getContentResolver(),
+          Settings.System.VIBRATE_WHEN_RINGING,
+          doVibrate ? DO_VIBRATION_FOR_CALLS : NO_VIBRATION_FOR_CALLS);
+    } else if (preference == dtmfToneLength) {
+      int index = dtmfToneLength.findIndexOfValue((String) objValue);
+      Settings.System.putInt(
+          getActivity().getContentResolver(), Settings.System.DTMF_TONE_TYPE_WHEN_DIALING, index);
+    }
+    return true;
+  }
+
+  /** Click listener for toggle events. */
+  @Override
+  public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
+    if (!Settings.System.canWrite(getContext())) {
+      Toast.makeText(
+              getContext(),
+              getResources().getString(R.string.toast_cannot_write_system_settings),
+              Toast.LENGTH_SHORT)
+          .show();
+      return true;
+    }
+    if (preference == playDtmfTone) {
+      Settings.System.putInt(
+          getActivity().getContentResolver(),
+          Settings.System.DTMF_TONE_WHEN_DIALING,
+          playDtmfTone.isChecked() ? PLAY_DTMF_TONE : NO_DTMF_TONE);
+    }
+    return true;
+  }
+
+  /** Updates the summary text on the ringtone preference with the name of the ringtone. */
+  private void updateRingtonePreferenceSummary() {
+    SettingsUtil.updateRingtoneName(
+        getActivity(),
+        ringtoneLookupComplete,
+        RingtoneManager.TYPE_RINGTONE,
+        ringtonePreference.getKey(),
+        MSG_UPDATE_RINGTONE_SUMMARY);
+  }
+
+  /**
+   * Obtain the value for "vibrate when ringing" setting. The default value is false.
+   *
+   * <p>Watch out: if the setting is missing in the device, this will try obtaining the old "vibrate
+   * on ring" setting from AudioManager, and save the previous setting to the new one.
+   */
+  private boolean shouldVibrateWhenRinging() {
+    int vibrateWhenRingingSetting =
+        Settings.System.getInt(
+            getActivity().getContentResolver(),
+            Settings.System.VIBRATE_WHEN_RINGING,
+            NO_VIBRATION_FOR_CALLS);
+    return hasVibrator() && (vibrateWhenRingingSetting == DO_VIBRATION_FOR_CALLS);
+  }
+
+  /** Obtains the value for dialpad/DTMF tones. The default value is true. */
+  private boolean shouldPlayDtmfTone() {
+    int dtmfToneSetting =
+        Settings.System.getInt(
+            getActivity().getContentResolver(),
+            Settings.System.DTMF_TONE_WHEN_DIALING,
+            PLAY_DTMF_TONE);
+    return dtmfToneSetting == PLAY_DTMF_TONE;
+  }
+
+  /** Whether the device hardware has a vibrator. */
+  private boolean hasVibrator() {
+    Vibrator vibrator = (Vibrator) getActivity().getSystemService(Context.VIBRATOR_SERVICE);
+    return vibrator != null && vibrator.hasVibrator();
+  }
+
+  private boolean shouldHideCarrierSettings() {
+    CarrierConfigManager configManager =
+        (CarrierConfigManager) getActivity().getSystemService(Context.CARRIER_CONFIG_SERVICE);
+    return configManager
+        .getConfig()
+        .getBoolean(CarrierConfigManager.KEY_HIDE_CARRIER_NETWORK_SETTINGS_BOOL);
+  }
+}