com.dmitrymalkovich.android.githubanalytics.dashboard.DashboardPresenter.java Source code

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Here is the source code for com.dmitrymalkovich.android.githubanalytics.dashboard.DashboardPresenter.java

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/*
 * Copyright 2017.  Dmitry Malkovich
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.dmitrymalkovich.android.githubanalytics.dashboard;

import android.database.Cursor;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.Loader;

import com.dmitrymalkovich.android.githubanalytics.data.source.GithubDataSource;
import com.dmitrymalkovich.android.githubanalytics.data.source.GithubRepository;
import com.dmitrymalkovich.android.githubanalytics.data.source.local.LoaderProvider;

import org.eclipse.egit.github.core.Repository;

import java.util.List;

public class DashboardPresenter implements DashboardContract.Presenter, LoaderManager.LoaderCallbacks<Cursor>,
        GithubRepository.LoadDataCallback {

    private static final int REPOSITORIES_LOADER = 1;
    @SuppressWarnings("unused")
    private static String LOG_TAG = DashboardPresenter.class.getSimpleName();
    @SuppressWarnings("unused")
    @NonNull
    private final LoaderProvider mLoaderProvider;

    @NonNull
    private final LoaderManager mLoaderManager;

    @NonNull
    private GithubRepository mGithubRepository;

    @NonNull
    private DashboardContract.View mDashboardView;

    public DashboardPresenter(@NonNull GithubRepository githubRepository, @NonNull DashboardContract.View view,
            @NonNull LoaderProvider loaderProvider, @NonNull LoaderManager loaderManager) {
        mGithubRepository = githubRepository;
        mDashboardView = view;
        mLoaderProvider = loaderProvider;
        mLoaderManager = loaderManager;
        mDashboardView.setPresenter(this);
    }

    @Override
    public void start(Bundle savedInstanceState) {
        mDashboardView.setLoadingIndicator(true);
        if (savedInstanceState == null) {
            showRepositories();

            mGithubRepository.getRepositoriesWithAdditionalInfo(new GithubDataSource.GetRepositoriesCallback() {
                @Override
                public void onRepositoriesLoaded(List<Repository> repositoryList) {
                    mDashboardView.setLoadingIndicator(false);
                    mDashboardView.setRefreshIndicator(false);
                    mLoaderManager.restartLoader(REPOSITORIES_LOADER, null, DashboardPresenter.this);
                }

                @Override
                public void onDataNotAvailable() {
                    DashboardPresenter.this.onDataNotAvailable(REPOSITORIES_LOADER);
                }
            }, true);

        } else {
            mLoaderManager.initLoader(REPOSITORIES_LOADER, null, DashboardPresenter.this);
        }
    }

    @Override
    public void onRefresh() {
        mGithubRepository.getRepositoriesWithAdditionalInfo(new GithubDataSource.GetRepositoriesCallback() {
            @Override
            public void onRepositoriesLoaded(List<Repository> repositoryList) {
                mDashboardView.setLoadingIndicator(false);
                mDashboardView.setRefreshIndicator(false);
                mLoaderManager.restartLoader(REPOSITORIES_LOADER, null, DashboardPresenter.this);
            }

            @Override
            public void onDataNotAvailable() {
                DashboardPresenter.this.onDataNotAvailable(REPOSITORIES_LOADER);
            }
        }, false);
    }

    @Override
    public void onDataLoaded(Cursor data, int id) {
        mDashboardView.setLoadingIndicator(false);
        mDashboardView.setRefreshIndicator(false);
        mDashboardView.setEmptyState(false);
        mDashboardView.showRepositories(data);
    }

    @Override
    public void onDataEmpty(int id) {
        mDashboardView.setEmptyState(true);
    }

    @Override
    public void onDataNotAvailable(int id) {
        mDashboardView.setLoadingIndicator(false);
        mDashboardView.setRefreshIndicator(false);
        mDashboardView.setEmptyState(true);
        if (mGithubRepository.getToken() == null) {
            mDashboardView.signOut();
        }
    }

    @Override
    public void onDataReset() {
        // Nothing to do
    }

    @Override
    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
        return mLoaderProvider.createPopularRepositoryLoader();
    }

    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
        if (data != null) {
            if (data.moveToLast()) {
                onDataLoaded(data, loader.getId());
            } else {
                onDataEmpty(loader.getId());
            }
        } else {
            onDataNotAvailable(loader.getId());
        }
    }

    @Override
    public void onLoaderReset(Loader<Cursor> loader) {
        onDataReset();
    }

    private void showRepositories() {
        mLoaderManager.initLoader(REPOSITORIES_LOADER, null, DashboardPresenter.this);
    }
}