Magisk/app/src/main/java/com/topjohnwu/magisk/adapters/ReposAdapter.java

package com.topjohnwu.magisk.adapters;

import android.animation.Animator;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.support.v7.widget.RecyclerView;
import android.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.topjohnwu.magisk.MainActivity;
import com.topjohnwu.magisk.R;
import com.topjohnwu.magisk.module.Repo;
import com.topjohnwu.magisk.receivers.RepoDlReceiver;
import com.topjohnwu.magisk.utils.Utils;
import com.topjohnwu.magisk.utils.WebWindow;

import java.util.List;

import butterknife.BindView;
import butterknife.ButterKnife;

public class ReposAdapter extends RecyclerView.Adapter<ReposAdapter.ViewHolder> {

    private List<Repo> mUpdateRepos, mInstalledRepos, mOthersRepos;
    private View mView;
    private Context mContext;

    public ReposAdapter(List<Repo> update, List<Repo> installed, List<Repo> others) {
        mUpdateRepos = update;
        mInstalledRepos = installed;
        mOthersRepos = others;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        mView = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_repo, parent, false);
        ButterKnife.bind(this, mView);
        mContext = parent.getContext();

        return new ViewHolder(mView);
    }

    @Override
    public void onBindViewHolder(final ViewHolder holder, int position) {
        final Repo repo;
        if (position >= mUpdateRepos.size()) {
            position -= mUpdateRepos.size();
            if (position >= mInstalledRepos.size()) {
                position -= mInstalledRepos.size();
                repo = mOthersRepos.get(position);
            } else {
                repo = mInstalledRepos.get(position);
            }
        } else {
            repo = mUpdateRepos.get(position);
        }
        holder.title.setText(repo.getName());
        String author = repo.getAuthor();
        String versionName = repo.getVersion();
        String description = repo.getDescription();
        if (versionName != null) {
            holder.versionName.setText(versionName);
        }
        if (author != null) {
            holder.author.setText(mContext.getString(R.string.author, author));
        }
        if (description != null) {
            holder.description.setText(description);
        }

        View.OnClickListener listener = view -> {
            if (view.getId() == holder.updateImage.getId()) {
                String filename = repo.getName() + "-" + repo.getVersion() + ".zip";
                MainActivity.alertBuilder
                        .setTitle(mContext.getString(R.string.repo_install_title, repo.getName()))
                        .setMessage(mContext.getString(R.string.repo_install_msg, filename))
                        .setCancelable(true)
                        .setPositiveButton(R.string.download_install, (dialogInterface, i) -> Utils.dlAndReceive(
                                mContext,
                                new RepoDlReceiver(),
                                repo.getZipUrl(),
                                Utils.getLegalFilename(filename)))
                        .setNegativeButton(R.string.no_thanks, null)
                        .show();
            }
            if ((view.getId() == holder.changeLog.getId()) && (!repo.getLogUrl().equals(""))) {
                new WebWindow(mContext.getString(R.string.changelog), repo.getLogUrl(), mContext);
            }
            if ((view.getId() == holder.authorLink.getId()) && (!repo.getSupportUrl().equals(""))) {
                mContext.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(repo.getDonateUrl())));
            }
            if ((view.getId() == holder.supportLink.getId()) && (!repo.getSupportUrl().equals(""))) {
                mContext.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(repo.getSupportUrl())));
            }
        };

        holder.changeLog.setOnClickListener(listener);
        holder.updateImage.setOnClickListener(listener);
        holder.authorLink.setOnClickListener(listener);
        holder.supportLink.setOnClickListener(listener);
    }

    @Override
    public int getItemCount() {
        return mUpdateRepos.size() + mInstalledRepos.size() + mOthersRepos.size();
    }

    class ViewHolder extends RecyclerView.ViewHolder {

        @BindView(R.id.title) TextView title;
        @BindView(R.id.version_name) TextView versionName;
        @BindView(R.id.description) TextView description;
        @BindView(R.id.author) TextView author;
        @BindView(R.id.expand_layout) LinearLayout expandLayout;
        @BindView(R.id.update) ImageView updateImage;
        @BindView(R.id.installed) ImageView installedImage;
        @BindView(R.id.changeLog) ImageView changeLog;
        @BindView(R.id.authorLink) ImageView authorLink;
        @BindView(R.id.supportLink) ImageView supportLink;

        private ValueAnimator mAnimator;
        private ObjectAnimator animY2;
        private ViewHolder holder;

        private boolean expanded = false;

        public ViewHolder(View itemView) {
            super(itemView);
            WindowManager windowmanager = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
            ButterKnife.bind(this, itemView);
            DisplayMetrics dimension = new DisplayMetrics();
            windowmanager.getDefaultDisplay().getMetrics(dimension);
            holder = this;
            this.expandLayout.getViewTreeObserver().addOnPreDrawListener(
                    new ViewTreeObserver.OnPreDrawListener() {

                        @Override
                        public boolean onPreDraw() {
                            final int widthSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
                            final int heightSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
                            holder.expandLayout.getViewTreeObserver().removeOnPreDrawListener(this);
                            holder.expandLayout.setVisibility(View.GONE);
                            holder.expandLayout.measure(widthSpec, heightSpec);
                            final int holderHeight = holder.expandLayout.getMeasuredHeight();
                            mAnimator = slideAnimator(0, holderHeight);
                            animY2 = ObjectAnimator.ofFloat(holder.updateImage, "translationY", holderHeight / 2);

                            return true;
                        }

                    });

            mView.setOnClickListener(view -> {
                if (expanded) {
                    collapse(holder.expandLayout);
                } else {
                    expand(holder.expandLayout);
                }
                expanded = !expanded;
            });

        }

        private void expand(View view) {
            view.setVisibility(View.VISIBLE);
            mAnimator.start();
            animY2.start();

        }

        private void collapse(View view) {
            int finalHeight = view.getHeight();
            ValueAnimator mAnimator = slideAnimator(finalHeight, 0);
            mAnimator.addListener(new Animator.AnimatorListener() {
                @Override
                public void onAnimationEnd(Animator animator) {
                    view.setVisibility(View.GONE);
                }

                @Override
                public void onAnimationStart(Animator animator) {}

                @Override
                public void onAnimationCancel(Animator animator) {}

                @Override
                public void onAnimationRepeat(Animator animator) {}
            });
            mAnimator.start();
            animY2.reverse();

        }

        private ValueAnimator slideAnimator(int start, int end) {

            ValueAnimator animator = ValueAnimator.ofInt(start, end);

            animator.addUpdateListener(valueAnimator -> {
                int value = (Integer) valueAnimator.getAnimatedValue();
                ViewGroup.LayoutParams layoutParams = expandLayout
                        .getLayoutParams();
                layoutParams.height = value;
                expandLayout.setLayoutParams(layoutParams);
            });
            return animator;
        }

    }
}