GitNex-Android-App/app/src/main/java/org/mian/gitnex/activities/RepoWatchersActivity.java

package org.mian.gitnex.activities;

import android.os.Bundle;
import android.view.View;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;
import androidx.lifecycle.ViewModelProvider;
import org.mian.gitnex.R;
import org.mian.gitnex.adapters.UserGridAdapter;
import org.mian.gitnex.databinding.ActivityRepoWatchersBinding;
import org.mian.gitnex.helpers.contexts.RepositoryContext;
import org.mian.gitnex.viewmodels.RepoWatchersViewModel;

/**
 * @author M M Arif
 */
public class RepoWatchersActivity extends BaseActivity {

	private TextView noDataWatchers;
	private View.OnClickListener onClickListener;
	private UserGridAdapter adapter;
	private GridView mGridView;
	private ProgressBar mProgressBar;

	private RepositoryContext repository;

	@Override
	public void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		ActivityRepoWatchersBinding activityRepoWatchersBinding =
				ActivityRepoWatchersBinding.inflate(getLayoutInflater());
		setContentView(activityRepoWatchersBinding.getRoot());

		ImageView closeActivity = activityRepoWatchersBinding.close;
		TextView toolbarTitle = activityRepoWatchersBinding.toolbarTitle;
		noDataWatchers = activityRepoWatchersBinding.noDataWatchers;
		mGridView = activityRepoWatchersBinding.gridView;
		mProgressBar = activityRepoWatchersBinding.progressBar;

		repository = RepositoryContext.fromIntent(getIntent());
		final String repoOwner = repository.getOwner();
		final String repoName = repository.getName();

		initCloseListener();
		closeActivity.setOnClickListener(onClickListener);

		toolbarTitle.setText(R.string.repoWatchersInMenu);

		fetchDataAsync(repoOwner, repoName);
	}

	private void fetchDataAsync(String repoOwner, String repoName) {

		RepoWatchersViewModel repoWatchersModel =
				new ViewModelProvider(this).get(RepoWatchersViewModel.class);

		repoWatchersModel
				.getRepoWatchers(repoOwner, repoName, ctx)
				.observe(
						this,
						watchersListMain -> {
							adapter = new UserGridAdapter(ctx, watchersListMain);

							if (adapter.getCount() > 0) {

								mGridView.setAdapter(adapter);
								noDataWatchers.setVisibility(View.GONE);
							} else {

								adapter.notifyDataSetChanged();
								mGridView.setAdapter(adapter);
								noDataWatchers.setVisibility(View.VISIBLE);
							}

							mProgressBar.setVisibility(View.GONE);
						});
	}

	private void initCloseListener() {

		onClickListener = view -> finish();
	}

	@Override
	public void onResume() {
		super.onResume();
		repository.checkAccountSwitch(this);
	}
}