content: /*
   * Copyright (C) 2021 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 androidx.constraintlayout.motion.widget;
  
  import android.content.Context;
  import android.content.res.TypedArray;
  import android.graphics.Canvas;
  import android.util.AttributeSet;
  import android.view.View;
  import android.view.ViewGroup;
  
  import androidx.constraintlayout.widget.ConstraintHelper;
  import androidx.constraintlayout.widget.ConstraintLayout;
  import androidx.constraintlayout.widget.R;
  
  import java.util.HashMap;
  
  /**
   *
   */
  public class MotionHelper extends ConstraintHelper implements MotionHelperInterface {
  
      private boolean mUseOnShow = false;
      private boolean mUseOnHide = false;
      private float mProgress;
      protected View[] views;
  
      public MotionHelper(Context context) {
          super(context);
      }
  
      public MotionHelper(Context context, AttributeSet attrs) {
          super(context, attrs);
          init(attrs);
      }
  
      public MotionHelper(Context context, AttributeSet attrs, int defStyleAttr) {
          super(context, attrs, defStyleAttr);
          init(attrs);
      }
  
      /**
       *
       */
      @Override
      protected void init(AttributeSet attrs) {
          super.init(attrs);
          if (attrs != null) {
              TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.MotionHelper);
              final int n = a.getIndexCount();
              for (int i = 0; i < n; i++) {
                  int attr = a.getIndex(i);
                  if (attr == R.styleable.MotionHelper_onShow) {
                      mUseOnShow = a.getBoolean(attr, mUseOnShow);
                  } else if (attr == R.styleable.MotionHelper_onHide) {
                      mUseOnHide = a.getBoolean(attr, mUseOnHide);
                  }
              }
              a.recycle();
          }
      }
  
      /**
       *
       * @return
       *
       */
      @Override
      public boolean isUsedOnShow() {
          return mUseOnShow;
      }
  
      /**
       *
       * @return
       *
       */
      @Override
      public boolean isUseOnHide() {
          return mUseOnHide;
      }
  
      @Override
      public float getProgress() {
          return mProgress;
      }
  
      @Override
      public void setProgress(float progress) {
          mProgress = progress;
          if (this.mCount > 0) {
              this.views = this.getViews((ConstraintLayout) this.getParent());
  
              for (int i = 0; i < this.mCount; ++i) {
                  View view = this.views[i];
                  this.setProgress(view, progress);
              }
          } else {
              ViewGroup group = (ViewGroup) this.getParent();
              int count = group.getChildCount();
  
              for (int i = 0; i < count; ++i) {
                  View view = group.getChildAt(i);
                  if (view instanceof MotionHelper) {
                      continue;
                  }
                  this.setProgress(view, progress);
              }
          }
      }
  
      /**
       *
       * @param view
       * @param progress
       *
       */
      public void setProgress(View view, float progress) {
  
      }
  
      @Override
      public void onTransitionStarted(MotionLayout motionLayout, int startId, int endId) {
      }
  
      @Override
      public void onTransitionChange(MotionLayout motionLayout,
                                     int startId,
                                     int endId,
                                     float progress) {
      }
  
      @Override
      public void onTransitionCompleted(MotionLayout motionLayout, int currentId) {
      }
  
      @Override
      public void onTransitionTrigger(MotionLayout motionLayout,
                                      int triggerId,
                                      boolean positive,
                                      float progress) {
      }
  
      @Override
      public boolean isDecorator() {
          return false;
      }
  
      @Override
      public void onPreDraw(Canvas canvas) {
  
      }
      @Override
      public void onFinishedMotionScene(MotionLayout motionLayout) {
  
      }
  
      @Override
      public void onPostDraw(Canvas canvas) {
  
      }
  
      @Override
      public void onPreSetup(MotionLayout motionLayout,
                             HashMap<View, MotionController> controllerMap) {
  
      }
  
  }
  