The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

  * You can obtain one at http://mozilla.org/MPL/2.0/. */

 package org.mozilla.gecko.animation;

 import android.view.View;

 import android.view.animation.Animation;

 import android.view.animation.Transformation;

 public class HeightChangeAnimation extends Animation {

     int mFromHeight;

     int mToHeight;

     View mView;

     public HeightChangeAnimation(View view, int fromHeight, int toHeight) {

         mView = view;

         mFromHeight = fromHeight;

         mToHeight = toHeight;

     }

     @Override

     protected void applyTransformation(float interpolatedTime, Transformation t) {

         mView.getLayoutParams().height = Math.round((mFromHeight * (1 - interpolatedTime)) + (mToHeight * interpolatedTime));

         mView.requestLayout();

     }

 }