CompareRepositoryCommitsActivity.java

package com.alorma.github.ui.activity;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewCompat;
import android.support.v4.view.ViewPager;
import android.view.View;
import com.alorma.github.R;
import com.alorma.github.sdk.bean.info.RepoInfo;
import com.alorma.github.sdk.services.repo.CompareCommitsClient;
import com.alorma.github.ui.activity.base.RepositoryThemeActivity;
import com.alorma.github.ui.fragment.compare.CompareCommitsListFragment;
import com.alorma.github.ui.fragment.compare.CompareFilesListFragment;
import com.alorma.github.utils.AttributesUtils;
import java.util.ArrayList;
import java.util.List;
import rx.android.schedulers.AndroidSchedulers;
import rx.schedulers.Schedulers;

public class CompareRepositoryCommitsActivity extends RepositoryThemeActivity {

  private static final String REPO_INFO = "REPO_INFO";
  private static final String BASE = "BASE";
  private static final String HEAD = "HEAD";
  private CompareCommitsListFragment commitsFragment;
  private CompareFilesListFragment filesFragment;

  public static Intent launcherIntent(Context context, RepoInfo repoInfo, String base, String head) {
    Intent intent = new Intent(context, CompareRepositoryCommitsActivity.class);

    intent.putExtra(REPO_INFO, repoInfo);
    intent.putExtra(BASE, base);
    intent.putExtra(HEAD, head);

    return intent;
  }

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_compare_commits);

    if (getToolbar() != null) {
      getToolbar().setBackgroundColor(AttributesUtils.getPrimaryColor(this));
    }

    if (getIntent().getExtras() != null) {
      RepoInfo repoInfo = getIntent().getExtras().getParcelable(REPO_INFO);
      String base = getIntent().getExtras().getString(BASE);
      String head = getIntent().getExtras().getString(HEAD);

      setTitle(base + " ... " + head);

      CompareCommitsClient compareCommitsClient = new CompareCommitsClient(repoInfo, base, head);
      compareCommitsClient.observable()
          .subscribeOn(Schedulers.io())
          .observeOn(AndroidSchedulers.mainThread())
          .subscribe(compareCommit -> {
        if (commitsFragment != null) {
          commitsFragment.setCommits(compareCommit.commits);
        }
        if (filesFragment != null) {
          filesFragment.setFiles(compareCommit.files);
        }
      }, Throwable::printStackTrace);

      final TabLayout tabLayout = (TabLayout) findViewById(R.id.tabStrip);

      final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);

      List<Fragment> listFragments = new ArrayList<>();
      commitsFragment = CompareCommitsListFragment.newInstance(repoInfo);
      listFragments.add(commitsFragment);
      filesFragment = CompareFilesListFragment.newInstance(repoInfo);
      listFragments.add(filesFragment);
      NavigationPagerAdapter adapter = new NavigationPagerAdapter(getSupportFragmentManager(), listFragments);

      viewPager.setAdapter(adapter);
      if (ViewCompat.isLaidOut(tabLayout)) {
        tabLayout.setupWithViewPager(viewPager);
      } else {
        tabLayout.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
          @Override
          public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight,
              int oldBottom) {
            tabLayout.setupWithViewPager(viewPager);

            tabLayout.removeOnLayoutChangeListener(this);
          }
        });
      }
    } else {
      finish();
    }
  }

  @Override
  protected int getAppDarkTheme() {
    return R.style.AppTheme_Dark_Repository;
  }

  @Override
  protected int getAppLightTheme() {
    return R.style.AppTheme_Repository;
  }

  private class NavigationPagerAdapter extends FragmentPagerAdapter {

    private List<Fragment> listFragments;

    public NavigationPagerAdapter(FragmentManager fm, List<Fragment> listFragments) {
      super(fm);
      this.listFragments = listFragments;
    }

    @Override
    public Fragment getItem(int position) {
      return listFragments.get(position);
    }

    @Override
    public int getCount() {
      return listFragments.size();
    }

    @Override
    public CharSequence getPageTitle(int position) {
      switch (position) {
        case 0:
          return getString(R.string.commits);
        case 1:
          return getString(R.string.commits_detail_files);
      }
      return "";
    }
  }
}