com.amazingmvp.ui.activity.HomeActivity.java Source code

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Here is the source code for com.amazingmvp.ui.activity.HomeActivity.java

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/*
* Copyright (C) 2016 Pedro Paulo de Amorim
*
* 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.amazingmvp.ui.activity;

import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.support.design.widget.Snackbar;
import android.support.design.widget.TabLayout;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.TextView;
import butterknife.Bind;
import com.amazingmvp.AmazingMvpApplication;
import com.amazingmvp.R;
import com.amazingmvp.di.ActivityModule;
import com.amazingmvp.di.components.DaggerHomeActivityComponent;
import com.amazingmvp.di.components.HomeActivityComponent;
import com.amazingmvp.ui.adapter.GenreAdapter;
import com.amazingmvp.ui.callback.GenreCallback;
import com.amazingmvp.util.ViewUtil;
import com.amazingmvprules.domain.model.Genre;
import com.amazingmvprules.domain.model.SubGenre;
import com.amazingmvprules.domain.util.Tags;
import com.amazingmvprules.presenter.HomePresenter;
import java.util.ArrayList;
import javax.inject.Inject;

public class HomeActivity extends AbstractActivity implements HomePresenter.View, GenreCallback {

    private HomeActivityComponent homeActivityComponent;

    @Inject
    HomePresenter homePresenter;

    @Bind(R.id.container)
    RelativeLayout container;
    @Bind(R.id.toolbar)
    Toolbar toolbar;
    @Bind(R.id.tab_layout)
    TabLayout tabLayout;
    @Bind(R.id.view_pager)
    ViewPager viewPager;
    @Bind(R.id.progress_bar)
    ProgressBar progressBar;
    @Bind(R.id.text_view_warning)
    TextView warning;
    @Bind(R.id.try_again)
    Button tryAgain;

    @Override
    protected int getLayoutId() {
        return R.layout.activity_base;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        homeActivityComponent().inject(this);
        super.onCreate(savedInstanceState);
        homePresenter.setView(this);
        setSupportActionBar(toolbar);
        homePresenter.requestGenres(savedInstanceState);
    }

    @Override
    protected void onDestroy() {
        cleanAdapter();
        super.onDestroy();
    }

    @Override
    public boolean isReady() {
        return !isFinishing();
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(homePresenter.saveInstance(outState));
    }

    @Override
    public void renderGenres(ArrayList<Genre> genre) {
        configViewPager(genre);
        tabLayout.setVisibility(View.VISIBLE);
        viewPager.setVisibility(View.VISIBLE);
        tryAgain.setVisibility(View.GONE);
        warning.setVisibility(View.GONE);
        progressBar.setVisibility(View.GONE);
    }

    @Override
    public void showLoading() {
        tabLayout.setVisibility(View.GONE);
        viewPager.setVisibility(View.GONE);
        tryAgain.setVisibility(View.GONE);
        warning.setVisibility(View.GONE);
        progressBar.setVisibility(View.VISIBLE);
    }

    @Override
    public void showError() {
        tabLayout.setVisibility(View.GONE);
        viewPager.setVisibility(View.GONE);
        tryAgain.setVisibility(View.VISIBLE);
        warning.setVisibility(View.VISIBLE);
        progressBar.setVisibility(View.GONE);
    }

    @Override
    public void showEmpty() {
        tabLayout.setVisibility(View.GONE);
        viewPager.setVisibility(View.GONE);
        tryAgain.setVisibility(View.VISIBLE);
        warning.setVisibility(View.VISIBLE);
        progressBar.setVisibility(View.GONE);
    }

    @Override
    public void showOffline(int reason) {
        Snackbar snackbar = Snackbar.make(container, R.string.connection_error, Snackbar.LENGTH_LONG);
        snackbar.show();
    }

    @Override
    public void onGenreClick(SubGenre subGenre) {
        Intent intent = new Intent(this, SubGenreActivity.class);
        intent.putExtra(Tags.GENRE, subGenre);
        startActivity(intent);
    }

    /**
     * This method will only be executed if the device
     * is a tablet(sw bigger than 600dp).
     */
    private void toggleTabletMode() {
        Resources res = getResources();
        if (res.getBoolean(R.bool.tablet)) {
            int spacing = ViewUtil.getWidth(this) / res.getInteger(R.integer.view_pager_spacing);
            viewPager.setClipToPadding(false);
            viewPager.setPadding(spacing, 0, spacing, 0);
            viewPager.setPageMargin(spacing / 6);
        }
    }

    /**
     * This method will configure the ViewPager
     * with the adapter and will set the ViewPager
     * to the TabLayout.
     */
    private void configViewPager(ArrayList<Genre> genres) {
        viewPager.setAdapter(new GenreAdapter(getSupportFragmentManager(), genres.size(), genres, this));
        tabLayout.setupWithViewPager(viewPager);
        toggleTabletMode();
    }

    private void cleanAdapter() {
        PagerAdapter adapter = viewPager.getAdapter();
        if (adapter != null && adapter instanceof GenreAdapter) {
            ((GenreAdapter) adapter).invalidate();
        }
    }

    private HomeActivityComponent homeActivityComponent() {
        if (homeActivityComponent == null) {
            homeActivityComponent = DaggerHomeActivityComponent.builder()
                    .applicationComponent(((AmazingMvpApplication) getApplication()).component())
                    .activityModule(new ActivityModule(this)).build();
        }
        return homeActivityComponent;
    }

}