content: /*
   * Copyright (C) 2016 Bilibili
   *
   * 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.bilibili.magicasakura.widgets;
  
  import android.content.Context;
  import android.content.res.TypedArray;
  import android.graphics.PorterDuff;
  import android.graphics.drawable.Drawable;
  import android.support.v4.content.ContextCompat;
  import android.support.v4.graphics.drawable.DrawableCompat;
  import android.util.AttributeSet;
  import android.widget.TextView;
  
  import com.bilibili.magicasakura.utils.DrawableUtils;
  import com.bilibili.magicasakura.utils.ThemeUtils;
  import com.bilibili.magicasakura.utils.TintInfo;
  import com.bilibili.magicasakura.utils.TintManager;
  import com.wm.remusic.R;
  
  /**
   * @author xyczero617@gmail.com
   * @time 15/9/26
   */
  public class AppCompatCompoundDrawableHelper extends AppCompatBaseHelper {
  
      private static final int[] ATTR = {
              R.attr.drawableLeftTint,
              R.attr.drawableTopTint,
              R.attr.drawableRightTint,
              R.attr.drawableBottomTint,
              R.attr.drawableLeftTintMode,
              R.attr.drawableTopTintMode,
              R.attr.drawableRightTintMode,
              R.attr.drawableBottomTintMode
      };
  
      private TintInfo[] mCompoundDrawableTintInfos = new TintInfo[4];
  
      private int[] mCompoundDrawableResIds = new int[4];
      private int[] mCompoundDrawableTintResIds = new int[4];
      private PorterDuff.Mode[] mCompoundDrawableTintModes = new PorterDuff.Mode[4];
  
      public AppCompatCompoundDrawableHelper(TextView view, TintManager tintManager) {
          super(view, tintManager);
      }
  
      @SuppressWarnings("ResourceType")
      @Override
      void loadFromAttribute(AttributeSet attrs, int defStyleAttr) {
          Context context = mView.getContext();
          TypedArray a = context.obtainStyledAttributes(attrs, ATTR, defStyleAttr, 0);
          for (int tintIndex = 0; tintIndex < 4; tintIndex++) {
              int modeIndex = tintIndex + 4;
              mCompoundDrawableResIds[tintIndex] = a.getResourceId(tintIndex, 0);
              mCompoundDrawableTintResIds[tintIndex] = a.getResourceId(tintIndex, 0);
              if (a.hasValue(modeIndex)) {
                  mCompoundDrawableTintModes[tintIndex] = DrawableUtils.parseTintMode(a.getInt(modeIndex, 0), null);
              }
          }
          mCompoundDrawableResIds[0] = ThemeUtils.getThemeAttrId(context, attrs, android.R.attr.drawableLeft);
          mCompoundDrawableResIds[1] = ThemeUtils.getThemeAttrId(context, attrs, android.R.attr.drawableTop);
          mCompoundDrawableResIds[2] = ThemeUtils.getThemeAttrId(context, attrs, android.R.attr.drawableRight);
          mCompoundDrawableResIds[3] = ThemeUtils.getThemeAttrId(context, attrs, android.R.attr.drawableBottom);
          a.recycle();
  
          setCompoundDrawablesWithIntrinsicBounds(
                  getCompoundDrawableByPosition(0),
                  getCompoundDrawableByPosition(1),
                  getCompoundDrawableByPosition(2),
                  getCompoundDrawableByPosition(3));
      }
  
      /**
       * External use
       */
      public void setCompoundDrawablesWithIntrinsicBounds() {
          if (skipNextApply()) return;
  
          resetTintResource(0, 0, 0, 0);
          setSkipNextApply(false);
      }
  
      public void setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) {
          resetTintResource(left, top, right, bottom);
  
          setCompoundDrawablesWithIntrinsicBounds(
                  getCompoundDrawableByPosition(0),
                  getCompoundDrawableByPosition(1),
                  getCompoundDrawableByPosition(2),
                  getCompoundDrawableByPosition(3));
      }
  
      public void setCompoundDrawablesTintList(int... resIds) {
          for (int i = 0; i < resIds.length; i++) {
              mCompoundDrawableTintResIds[i] = resIds[i];
              TintInfo tintInfo = mCompoundDrawableTintInfos[i];
              if (tintInfo != null) {
                  tintInfo.mHasTintList = false;
                  tintInfo.mTintList = null;
              }
          }
          setCompoundDrawablesWithIntrinsicBounds(
                  getCompoundDrawableByPosition(0),
                  getCompoundDrawableByPosition(1),
                  getCompoundDrawableByPosition(2),
                  getCompoundDrawableByPosition(3));
      }
  
      /**
       * Internal use
       */
      private void setCompoundDrawablesWithIntrinsicBounds(Drawable left, Drawable top, Drawable right, Drawable bottom) {
          if (skipNextApply()) return;
  
          ((TextView) mView).setCompoundDrawablesWithIntrinsicBounds(left, top, right, bottom);
      }
  
      private Drawable getCompoundDrawableByPosition(int i) {
          PorterDuff.Mode tintMode = mCompoundDrawableTintModes[i];
          int tintResId = mCompoundDrawableTintResIds[i];
          int resId = mCompoundDrawableResIds[i];
          if (tintResId != 0) {
              setSupportCompoundDrawableTintModeByPosition(i, tintMode);
              return setSupportCompoundDrawableByPosition(i, tintResId);
          } else {
              Drawable drawable = mTintManager.getDrawable(resId);
              if (drawable == null) {
                  return resId == 0 ? null : ContextCompat.getDrawable(mView.getContext(), resId);
              }
              return drawable;
          }
      }
  
      private Drawable setSupportCompoundDrawableByPosition(int position, int tintId) {
          if (tintId != 0) {
              if (mCompoundDrawableTintInfos[position] == null) {
                  mCompoundDrawableTintInfos[position] = new TintInfo();
              }
              mCompoundDrawableTintInfos[position].mHasTintList = true;
              mCompoundDrawableTintInfos[position].mTintList = mTintManager.getColorStateList(tintId);
          }
          return applySupportCompoundDrawableTint(position);
      }
  
      private void setSupportCompoundDrawableTintModeByPosition(int position, PorterDuff.Mode mode) {
          if (mode != null) {
              if (mCompoundDrawableTintInfos[position] == null) {
                  mCompoundDrawableTintInfos[position] = new TintInfo();
              }
              mCompoundDrawableTintInfos[position].mHasTintMode = true;
              mCompoundDrawableTintInfos[position].mTintMode = mode;
          }
      }
  
      private Drawable applySupportCompoundDrawableTint(int position) {
          Drawable originDrawable = ((TextView) mView).getCompoundDrawables()[position];
          Drawable compoundDrawable = originDrawable;
          TintInfo tintInfo = mCompoundDrawableTintInfos[position];
          if (compoundDrawable != null && tintInfo != null && tintInfo.mHasTintList) {
              compoundDrawable = DrawableCompat.wrap(compoundDrawable);
              compoundDrawable.mutate();
              if (tintInfo.mHasTintList) {
                  DrawableCompat.setTintList(compoundDrawable, tintInfo.mTintList);
              }
              if (tintInfo.mHasTintMode) {
                  DrawableCompat.setTintMode(compoundDrawable, tintInfo.mTintMode);
              }
              if (compoundDrawable.isStateful()) {
                  compoundDrawable.setState(originDrawable.getState());
              }
              return compoundDrawable;
          }
          return originDrawable;
      }
  
      private void resetTintResource(int... resIds/*background resource id:left,top,right,bottom*/) {
          for (int i = 0; i < resIds.length; i++) {
              mCompoundDrawableResIds[i] = resIds[i];
              mCompoundDrawableTintResIds[i] = 0;
              TintInfo tintInfo = mCompoundDrawableTintInfos[i];
              if (tintInfo != null) {
                  tintInfo.mHasTintList = false;
                  tintInfo.mTintList = null;
                  tintInfo.mHasTintMode = false;
                  tintInfo.mTintMode = null;
              }
          }
      }
  
      @Override
      public void tint() {
          setCompoundDrawablesWithIntrinsicBounds(
                  getCompoundDrawableByPosition(0),
                  getCompoundDrawableByPosition(1),
                  getCompoundDrawableByPosition(2),
                  getCompoundDrawableByPosition(3));
      }
  
      public interface CompoundDrawableExtensible {
          void setCompoundDrawableTintList(int leftResId, int topResId, int rightResId, int bottomResId);
      }
  }
  