com.evandroid.musica.utils.RefreshButtonBehavior.java Source code

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Here is the source code for com.evandroid.musica.utils.RefreshButtonBehavior.java

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/*
 * *
 *  * This file is part of QuickLyric
 *  * Created by geecko
 *  *
 *  * QuickLyric is free software: you can redistribute it and/or modify
 *  * it under the terms of the GNU General Public License as published by
 *  * the Free Software Foundation, either version 3 of the License, or
 *  * (at your option) any later version.
 *  *
 *  * QuickLyric is distributed in the hope that it will be useful,
 *  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  * GNU General Public License for more details.
 *  * You should have received a copy of the GNU General Public License
 *  * along with QuickLyric.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package com.evandroid.musica.utils;

import android.content.Context;
import android.os.Build;
import android.support.design.widget.CoordinatorLayout;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.view.ViewCompat;
import android.support.v4.view.ViewPropertyAnimatorListener;
import android.support.v4.view.animation.FastOutSlowInInterpolator;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;

import com.evandroid.musica.R;

public class RefreshButtonBehavior extends FloatingActionButton.Behavior {

    private static final android.view.animation.Interpolator INTERPOLATOR = new FastOutSlowInInterpolator();
    private boolean mIsAnimatingOut = false;
    public static boolean visible = true;

    public RefreshButtonBehavior(Context context, AttributeSet attrs) {
        super();
    }

    // Same animation that FloatingActionButton.Behavior uses to
    // hide the FAB when the AppBarLayout exits
    public void animateOut(final FloatingActionButton button) {
        int translationY = button.getHeight()
                + ((CoordinatorLayout.LayoutParams) button.getLayoutParams()).bottomMargin;
        if (Build.VERSION.SDK_INT >= 14) {
            ViewCompat.animate(button).translationY(translationY).setInterpolator(INTERPOLATOR).withLayer()
                    .setListener(new ViewPropertyAnimatorListener() {
                        public void onAnimationStart(View view) {
                            RefreshButtonBehavior.this.mIsAnimatingOut = true;
                        }

                        public void onAnimationCancel(View view) {
                            RefreshButtonBehavior.this.mIsAnimatingOut = false;
                        }

                        public void onAnimationEnd(View view) {
                            RefreshButtonBehavior.this.mIsAnimatingOut = false;
                            view.setVisibility(View.GONE);
                            visible = false;
                        }
                    }).start();
        } else {
            Animation anim = AnimationUtils.loadAnimation(button.getContext(), R.anim.refresh_out);
            anim.setInterpolator(INTERPOLATOR);
            anim.setDuration(200L);
            anim.setAnimationListener(new Animation.AnimationListener() {
                public void onAnimationStart(Animation animation) {
                    RefreshButtonBehavior.this.mIsAnimatingOut = true;
                }

                public void onAnimationEnd(Animation animation) {
                    RefreshButtonBehavior.this.mIsAnimatingOut = false;
                    button.setVisibility(View.GONE);
                    visible = false;
                }

                @Override
                public void onAnimationRepeat(final Animation animation) {
                }
            });
            button.startAnimation(anim);
        }
    }

    // Same animation that FloatingActionButton.Behavior
    // uses to show the FAB when the AppBarLayout enters
    public void animateIn(FloatingActionButton button) {
        if (!button.isEnabled())
            return;
        button.setVisibility(View.VISIBLE);
        visible = true;
        if (Build.VERSION.SDK_INT >= 14) {
            ViewCompat.animate(button).translationY(0).setInterpolator(INTERPOLATOR).withLayer().setListener(null)
                    .start();
        } else {
            Animation anim = AnimationUtils.loadAnimation(button.getContext(), R.anim.refresh_in);
            anim.setDuration(200L);
            anim.setInterpolator(INTERPOLATOR);
            button.startAnimation(anim);
        }
    }

    @Override
    public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, FloatingActionButton child,
            View directTargetChild, View target, int nestedScrollAxes) {
        return nestedScrollAxes == ViewCompat.SCROLL_AXIS_VERTICAL
                || super.onStartNestedScroll(coordinatorLayout, child, directTargetChild, target, nestedScrollAxes);
    }

    @Override
    public void onNestedScroll(CoordinatorLayout coordinatorLayout, FloatingActionButton child, View target,
            int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
        super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);

        if ((dyUnconsumed > 0 || dyConsumed > 25) && !this.mIsAnimatingOut
                && child.getVisibility() == View.VISIBLE) {
            animateOut(child);
        } else if ((dyUnconsumed < 0 || dyConsumed < -10) && child.getVisibility() != View.VISIBLE) {
            animateIn(child);
        }
    }
}