content: /*
   * 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.amnesica.kryptey.inputmethod.latin.settings;
  
  import android.content.Context;
  import android.content.SharedPreferences;
  import android.content.res.Resources;
  import android.media.AudioManager;
  import android.os.Bundle;
  
  import com.amnesica.kryptey.inputmethod.R;
  import com.amnesica.kryptey.inputmethod.latin.AudioAndHapticFeedbackManager;
  
  /**
   * "Preferences" settings sub screen.
   * <p>
   * This settings sub screen handles the following input preferences.
   * - Vibrate on keypress
   * - Keypress vibration duration
   * - Sound on keypress
   * - Keypress sound volume
   * - Popup on keypress
   * - Key long press delay
   */
  public final class KeyPressSettingsFragment extends SubScreenFragment {
    @Override
    public void onCreate(final Bundle icicle) {
      super.onCreate(icicle);
      addPreferencesFromResource(R.xml.prefs_screen_key_press);
  
      final Context context = getActivity();
  
      // When we are called from the Settings application but we are not already running, some
      // singleton and utility classes may not have been initialized.  We have to call
      // initialization method of these classes here. See {@link LatinIME#onCreate()}.
      AudioAndHapticFeedbackManager.init(context);
  
      if (!AudioAndHapticFeedbackManager.getInstance().hasVibrator()) {
        removePreference(Settings.PREF_VIBRATE_ON);
        removePreference(Settings.PREF_VIBRATION_DURATION_SETTINGS);
      }
  
      setupKeypressVibrationDurationSettings();
      setupKeypressSoundVolumeSettings();
      setupKeyLongpressTimeoutSettings();
    }
  
    private void setupKeypressVibrationDurationSettings() {
      final SeekBarDialogPreference pref = (SeekBarDialogPreference) findPreference(
          Settings.PREF_VIBRATION_DURATION_SETTINGS);
      if (pref == null) {
        return;
      }
      final SharedPreferences prefs = getSharedPreferences();
      final Resources res = getResources();
      pref.setInterface(new SeekBarDialogPreference.ValueProxy() {
        @Override
        public void writeValue(final int value, final String key) {
          prefs.edit().putInt(key, value).apply();
        }
  
        @Override
        public void writeDefaultValue(final String key) {
          prefs.edit().remove(key).apply();
        }
  
        @Override
        public int readValue(final String key) {
          return Settings.readKeypressVibrationDuration(prefs, res);
        }
  
        @Override
        public int readDefaultValue(final String key) {
          return Settings.readDefaultKeypressVibrationDuration(res);
        }
  
        @Override
        public void feedbackValue(final int value) {
          AudioAndHapticFeedbackManager.getInstance().vibrate(value);
        }
  
        @Override
        public String getValueText(final int value) {
          if (value < 0) {
            return res.getString(R.string.settings_system_default);
          }
          return res.getString(R.string.abbreviation_unit_milliseconds, value);
        }
      });
    }
  
    private void setupKeypressSoundVolumeSettings() {
      final SeekBarDialogPreference pref = (SeekBarDialogPreference) findPreference(
          Settings.PREF_KEYPRESS_SOUND_VOLUME);
      if (pref == null) {
        return;
      }
      final SharedPreferences prefs = getSharedPreferences();
      final Resources res = getResources();
      final AudioManager am = (AudioManager) getActivity().getSystemService(Context.AUDIO_SERVICE);
      pref.setInterface(new SeekBarDialogPreference.ValueProxy() {
        private static final float PERCENTAGE_FLOAT = 100.0f;
  
        private float getValueFromPercentage(final int percentage) {
          return percentage / PERCENTAGE_FLOAT;
        }
  
        private int getPercentageFromValue(final float floatValue) {
          return (int) (floatValue * PERCENTAGE_FLOAT);
        }
  
        @Override
        public void writeValue(final int value, final String key) {
          prefs.edit().putFloat(key, getValueFromPercentage(value)).apply();
        }
  
        @Override
        public void writeDefaultValue(final String key) {
          prefs.edit().remove(key).apply();
        }
  
        @Override
        public int readValue(final String key) {
          return getPercentageFromValue(Settings.readKeypressSoundVolume(prefs, res));
        }
  
        @Override
        public int readDefaultValue(final String key) {
          return getPercentageFromValue(Settings.readDefaultKeypressSoundVolume(res));
        }
  
        @Override
        public String getValueText(final int value) {
          if (value < 0) {
            return res.getString(R.string.settings_system_default);
          }
          return Integer.toString(value);
        }
  
        @Override
        public void feedbackValue(final int value) {
          am.playSoundEffect(
              AudioManager.FX_KEYPRESS_STANDARD, getValueFromPercentage(value));
        }
      });
    }
  
    private void setupKeyLongpressTimeoutSettings() {
      final SharedPreferences prefs = getSharedPreferences();
      final Resources res = getResources();
      final SeekBarDialogPreference pref = (SeekBarDialogPreference) findPreference(
          Settings.PREF_KEY_LONGPRESS_TIMEOUT);
      if (pref == null) {
        return;
      }
      pref.setInterface(new SeekBarDialogPreference.ValueProxy() {
        @Override
        public void writeValue(final int value, final String key) {
          prefs.edit().putInt(key, value).apply();
        }
  
        @Override
        public void writeDefaultValue(final String key) {
          prefs.edit().remove(key).apply();
        }
  
        @Override
        public int readValue(final String key) {
          return Settings.readKeyLongpressTimeout(prefs, res);
        }
  
        @Override
        public int readDefaultValue(final String key) {
          return Settings.readDefaultKeyLongpressTimeout(res);
        }
  
        @Override
        public String getValueText(final int value) {
          return res.getString(R.string.abbreviation_unit_milliseconds, value);
        }
  
        @Override
        public void feedbackValue(final int value) {
        }
      });
    }
  }
  