UndoBarController.java

/*
 * Copyright (C) 2015 Federico Iosue (federico.iosue@gmail.com)
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package it.feio.android.omninotes.models;

import android.os.Bundle;
import android.os.Parcelable;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import com.nineoldandroids.animation.Animator;
import com.nineoldandroids.animation.AnimatorListenerAdapter;
import com.nineoldandroids.view.ViewPropertyAnimator;
import it.feio.android.checklistview.utils.AlphaManager;
import it.feio.android.omninotes.R;

import java.util.Locale;

import static com.nineoldandroids.view.ViewPropertyAnimator.animate;


public class UndoBarController {

    private View mBarView;
    private TextView mMessageView;
    private ViewPropertyAnimator mBarAnimator;
//    private Handler mHideHandler = new Handler();

    private UndoListener mUndoListener;

    // State objects
    private Parcelable mUndoToken;
    private CharSequence mUndoMessage;
    private Button mButtonView;
    private boolean isVisible;


    public interface UndoListener {

        void onUndo(Parcelable token);
    }


    public UndoBarController(View undoBarView, UndoListener undoListener) {
        mBarView = undoBarView;
//        mBarAnimator = mBarView.animate();
        mBarAnimator = animate(mBarView);
        mUndoListener = undoListener;

        mMessageView = (TextView) mBarView.findViewById(R.id.undobar_message);

        mButtonView = (Button) mBarView.findViewById(R.id.undobar_button);
        mButtonView.setText(mButtonView.getText().toString().toUpperCase(Locale.getDefault()));
        mButtonView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                hideUndoBar(false);
                mUndoListener.onUndo(mUndoToken);
            }
        });

        hideUndoBar(false);
    }


    public void showUndoBar(boolean immediate, CharSequence message, Parcelable undoToken) {
        mUndoToken = undoToken;
        mUndoMessage = message;
        mMessageView.setText(mUndoMessage);

//        mHideHandler.removeCallbacks(mHideRunnable);
//        mHideHandler.postDelayed(mHideRunnable,
//                mBarView.getResources().getInteger(R.integer.undobar_hide_delay));

        mBarView.setVisibility(View.VISIBLE);
        if (immediate) {
//            mBarView.setAlpha(1);
            AlphaManager.setAlpha(mBarView, 1);
        } else {
            mBarAnimator.cancel();
            mBarAnimator
                    .alpha(1)
                    .setDuration(
                            mBarView.getResources()
                                    .getInteger(android.R.integer.config_shortAnimTime))
                    .setListener(null);
        }
        isVisible = true;
    }


    public void hideUndoBar(boolean immediate) {
//        mHideHandler.removeCallbacks(mHideRunnable);
        if (immediate) {
            mBarView.setVisibility(View.GONE);
            AlphaManager.setAlpha(mBarView, 0);
            mUndoMessage = null;
            mUndoToken = null;

        } else {
            mBarAnimator.cancel();
            mBarAnimator
                    .alpha(0)
                    .setDuration(mBarView.getResources()
                            .getInteger(android.R.integer.config_shortAnimTime))
                    .setListener(new AnimatorListenerAdapter() {
                        @Override
                        public void onAnimationEnd(Animator animation) {
                            mBarView.setVisibility(View.GONE);
                            mUndoMessage = null;
                            mUndoToken = null;
                        }
                    });
        }
        isVisible = false;
    }


    public void onSaveInstanceState(Bundle outState) {
        outState.putCharSequence("undo_message", mUndoMessage);
        outState.putParcelable("undo_token", mUndoToken);
    }


    public void onRestoreInstanceState(Bundle savedInstanceState) {
        if (savedInstanceState != null) {
            mUndoMessage = savedInstanceState.getCharSequence("undo_message");
            mUndoToken = savedInstanceState.getParcelable("undo_token");

            if (mUndoToken != null || !TextUtils.isEmpty(mUndoMessage)) {
                showUndoBar(true, mUndoMessage, mUndoToken);
            }
        }
    }


    public boolean isVisible() {
        return isVisible;
    }

//    private Runnable mHideRunnable = new Runnable() {
//        @Override
//        public void run() {
//            hideUndoBar(false);
//        }
//    };
}