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/* 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;
import org.mozilla.gecko.animation.HeightChangeAnimation;
import android.content.Context;
import android.util.AttributeSet;
import android.view.animation.Animation;
import android.view.animation.DecelerateInterpolator;
import android.widget.RelativeLayout;
public class AnimatedHeightLayout extends RelativeLayout {
private static final String LOGTAG = "GeckoAnimatedHeightLayout";
private static final int ANIMATION_DURATION = 100;
private boolean mAnimating = false;
public AnimatedHeightLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int oldHeight = getMeasuredHeight();
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int newHeight = getMeasuredHeight();
if (!mAnimating && oldHeight != 0 && oldHeight != newHeight) {
mAnimating = true;
setMeasuredDimension(getMeasuredWidth(), oldHeight);
// Animate the difference of suggestion row height
Animation anim = new HeightChangeAnimation(this, oldHeight, newHeight);
anim.setDuration(ANIMATION_DURATION);
anim.setInterpolator(new DecelerateInterpolator());
anim.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {}
@Override
public void onAnimationRepeat(Animation animation) {}
@Override
public void onAnimationEnd(Animation animation) {
post(new Runnable() {
@Override
public void run() {
finishAnimation();
}
});
}
});
startAnimation(anim);
}
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
finishAnimation();
}
private void finishAnimation() {
if (mAnimating) {
getLayoutParams().height = LayoutParams.WRAP_CONTENT;
mAnimating = false;
}
}
}
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