ModalTransition.java

package architect.commons.transition;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.view.View;
import android.view.animation.AccelerateDecelerateInterpolator;

import architect.ViewTransition;
import architect.ViewTransitionDirection;

/**
 * @author Lukasz Piliszczuk - lukasz.pili@gmail.com
 */
public abstract class ModalTransition<T extends View> implements ViewTransition<T, View> {

    protected Config config;

    public ModalTransition() {
        this(new Config().duration(300).interpolator(new AccelerateDecelerateInterpolator()));
    }

    public ModalTransition(Config config) {
        this.config = config;
    }

    @Override
    public void transition(final T enterView, final View exitView, ViewTransitionDirection direction, AnimatorSet set) {
        if (hideExitView()) {
            if (direction == ViewTransitionDirection.FORWARD) {
                set.addListener(new AnimatorListenerAdapter() {
                    @Override
                    public void onAnimationEnd(Animator animation) {
                        exitView.setVisibility(View.GONE);
                    }
                });
            } else {
                set.addListener(new AnimatorListenerAdapter() {
                    @Override
                    public void onAnimationStart(Animator animation) {
                        enterView.setVisibility(View.VISIBLE);
                    }
                });
            }
        }
    }

    public abstract boolean hideExitView();
}