content: /*
   * Copyright (C) 2015 Bilibili
   * Copyright (C) 2015 Zhang Rui <bbcallen@gmail.com>
   *
   * 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.alanwang4523.a4ijkplayerdemo.widget;
  
  import android.content.Context;
  import android.content.res.TypedArray;
  import androidx.preference.ListPreference;
  import android.text.TextUtils;
  import android.util.AttributeSet;
  
  import com.alanwang4523.a4ijkplayerdemo.R;
  
  public class IjkListPreference extends ListPreference {
      private CharSequence[] mEntrySummaries;
  
      public IjkListPreference(Context context) {
          super(context);
          initPreference(context, null);
      }
  
      public IjkListPreference(Context context, AttributeSet attrs) {
          super(context, attrs);
          initPreference(context, attrs);
      }
  
      public IjkListPreference(Context context, AttributeSet attrs, int defStyleAttr) {
          super(context, attrs, defStyleAttr);
          initPreference(context, attrs);
      }
  
      public IjkListPreference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
          super(context, attrs, defStyleAttr, defStyleRes);
          initPreference(context, attrs);
      }
  
      private void initPreference(Context context, AttributeSet attrs) {
          TypedArray a = context.obtainStyledAttributes(attrs,
                  R.styleable.IjkListPreference, 0, 0);
          if (a == null)
              return;
  
          mEntrySummaries = a
                  .getTextArray(R.styleable.IjkListPreference_entrySummaries);
  
          a.recycle();
      }
  
      @Override
      protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
          super.onSetInitialValue(restoreValue, defaultValue);
          syncSummary();
      }
  
      @Override
      public void setValue(String value) {
          super.setValue(value);
          syncSummary();
      }
  
      @Override
      public void setValueIndex(int index) {
          super.setValueIndex(index);
          syncSummary();
      }
  
      public int getEntryIndex() {
          CharSequence[] entryValues = getEntryValues();
          CharSequence value = getValue();
  
          if (entryValues == null || value == null) {
              return -1;
          }
  
          for (int i = 0; i < entryValues.length; ++i) {
              if (TextUtils.equals(value, entryValues[i])) {
                  return i;
              }
          }
  
          return -1;
      }
  
      // ----- summary --------------------
      public void setEntrySummaries(Context context, int resId) {
          setEntrySummaries(context.getResources().getTextArray(resId));
      }
  
      public void setEntrySummaries(CharSequence[] entrySummaries) {
          mEntrySummaries = entrySummaries;
          notifyChanged();
      }
  
      public CharSequence[] getEntrySummaries() {
          return mEntrySummaries;
      }
  
      private void syncSummary() {
          int index = getEntryIndex();
          if (index < 0)
              return;
  
          if (mEntrySummaries != null && index < mEntrySummaries.length) {
              setSummary(mEntrySummaries[index]);
          } else {
              setSummary(getEntries()[index]);
          }
      }
  }
  