gistfile1.txt

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main_drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    >

    <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".controler.articles.ArticlesActivity"
        >

        <com.google.android.material.appbar.AppBarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:theme="@style/AppTheme.AppBarOverlay"
            >

            <androidx.appcompat.widget.Toolbar
                android:id="@+id/main_toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="?attr/colorPrimary"
                app:popupTheme="@style/AppTheme.PopupOverlay"
                />
            <com.google.android.material.tabs.TabLayout
                android:id="@+id/main_tl"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="?attr/colorPrimary"
                app:tabMode="scrollable"
                />
        </com.google.android.material.appbar.AppBarLayout>

        <androidx.viewpager.widget.ViewPager
            android:id="@+id/main_vp"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior"
            />

        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/main_fab"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="@dimen/fab_margin"
            android:layout_gravity="bottom|right|end"
            app:layout_behavior="fr.delcey.p5.view.ScrollAwareFabBehavior"
            app:srcCompat="@drawable/ic_search_white_24dp"
            tools:ignore="RtlHardcoded"
            />
    </androidx.coordinatorlayout.widget.CoordinatorLayout>

    <com.google.android.material.navigation.NavigationView
        android:id="@+id/main_navigation_view_menu"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/articles_activity_menu_header"
        />

</androidx.drawerlayout.widget.DrawerLayout>



package fr.delcey.p5.controler.articles;

import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.GravityCompat;
import androidx.drawerlayout.widget.DrawerLayout;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.Fragment.SavedState;
import androidx.viewpager.widget.ViewPager;
import androidx.viewpager.widget.ViewPager.OnPageChangeListener;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.android.material.navigation.NavigationView;
import com.google.android.material.navigation.NavigationView.OnNavigationItemSelectedListener;
import com.google.android.material.tabs.TabLayout;
import fr.delcey.p5.MainApplication;
import fr.delcey.p5.R;
import fr.delcey.p5.controler.OnArticleClickedListener;
import fr.delcey.p5.controler.Section;
import fr.delcey.p5.controler.articles.mostpopular.MostPopularArticlesFragment;
import fr.delcey.p5.controler.articles.section.SectionArticlesFragment;
import fr.delcey.p5.controler.notification.NotificationActivity;
import fr.delcey.p5.controler.search.query.SearchActivity;
import fr.delcey.p5.utils.WebUtils;
import java.util.ArrayList;
import java.util.List;

public class ArticlesActivity extends AppCompatActivity implements OnNavigationItemSelectedListener,
                                                                   OnArticleClickedListener,
                                                                   OnPageChangeListener {
    
    private static final String KEY_CURRENT_FRAGMENT_INDEX = "KEY_CURRENT_FRAGMENT_INDEX";
    private static final String KEY_CURRENT_FRAGMENT_SAVED_STATE = "KEY_CURRENT_FRAGMENT_SAVED_STATE";
    
    private final List<AbsArticlesFragment> mViewPagerFragments = new ArrayList<>();
    
    private DrawerLayout mDrawer;
    private NavigationView mNavigationView;
    private ViewPager mViewPager;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        setContentView(R.layout.articles_activity);
        
        FloatingActionButton fab = findViewById(R.id.main_fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                startActivity(SearchActivity.navigate(ArticlesActivity.this));
            }
        });
        
        initMenuDrawer();
        initViewPager(savedInstanceState);
    }
    
    private void initMenuDrawer() {
        Toolbar toolbar = findViewById(R.id.main_toolbar);
        setSupportActionBar(toolbar);
        
        mDrawer = findViewById(R.id.main_drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this,
                                                                 mDrawer,
                                                                 toolbar,
                                                                 R.string.navigation_drawer_open,
                                                                 R.string.navigation_drawer_close);
        mDrawer.addDrawerListener(toggle);
        toggle.syncState();
        
        mNavigationView = findViewById(R.id.main_navigation_view_menu);
        mNavigationView.setNavigationItemSelectedListener(this);
        Menu navigationViewMenu = mNavigationView.getMenu();
        
        Section[] values = Section.values();
        for (int i = 0, valuesLength = values.length; i < valuesLength; i++) {
            Section section = values[i];
            MenuItem item = navigationViewMenu.add(0, i, Menu.NONE, section.getTitle());
            item.setIcon(section.getIcon());
            
            if (i == 0) {
                item.setChecked(true);
            }
        }
        
        navigationViewMenu.setGroupCheckable(0, true, true);
    }
    
    private void initViewPager(@Nullable Bundle savedInstanceState) {
        initViewPagerFragments();
        
        if (savedInstanceState != null) {
            int index = savedInstanceState.getInt(KEY_CURRENT_FRAGMENT_INDEX);
            SavedState fragmentSavedState = savedInstanceState.getParcelable(KEY_CURRENT_FRAGMENT_SAVED_STATE);
            
            mViewPagerFragments.get(index).setInitialSavedState(fragmentSavedState);
        }
        
        mViewPager = findViewById(R.id.main_vp);
        ArticlesViewPagerAdapter adapter = new ArticlesViewPagerAdapter(getSupportFragmentManager(),
                                                                        mViewPagerFragments);
        mViewPager.setAdapter(adapter);
        mViewPager.addOnPageChangeListener(this);
        
        TabLayout tabLayout = findViewById(R.id.main_tl);
        tabLayout.setupWithViewPager(mViewPager);
    }
    
    private void initViewPagerFragments() {
        for (Section section : Section.values()) {
            
            if (section.isMostPopularUrl()) {
                mViewPagerFragments.add(MostPopularArticlesFragment.newInstance(getString(section.getTitle()),
                                                                                section.getMostPopularDuration()));
            } else {
                mViewPagerFragments.add(SectionArticlesFragment.newInstance(getString(section.getTitle()),
                                                                            section.getSection()));
            }
        }
    }
    
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu on the ActionBar (top right)
        getMenuInflater().inflate(R.menu.articles_activity_menu, menu);
        return true;
    }
    
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        
        if (id == R.id.menu_action_notifications) {
            startActivity(NotificationActivity.navigate(this));
            
            return true;
        }
        
        return super.onOptionsItemSelected(item);
    }
    
    @Override
    public void onBackPressed() {
        if (mDrawer.isDrawerOpen(GravityCompat.START)) {
            mDrawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }
    
    @Override
    public boolean onNavigationItemSelected(@NonNull MenuItem item) {
        // MenuItem ids' are index instead of random (since we create them at runtime)
        int index = item.getItemId();
        
        mViewPager.setCurrentItem(index);
        
        mDrawer.closeDrawer(GravityCompat.START);
        
        return true;
    }
    
    @Override
    protected void onSaveInstanceState(@NonNull Bundle outState) {
        super.onSaveInstanceState(outState);
        
        Fragment currentFragment = mViewPagerFragments.get(mViewPager.getCurrentItem());
        
        outState.putInt(KEY_CURRENT_FRAGMENT_INDEX, mViewPager.getCurrentItem());
        outState.putParcelable(KEY_CURRENT_FRAGMENT_SAVED_STATE,
                               getSupportFragmentManager().saveFragmentInstanceState(currentFragment));
    }
    
    @Override
    public void onArticleClicked(@NonNull String articleUrl) {
        WebUtils.openUrl(this, ((MainApplication) getApplication()).getSession(), articleUrl);
    }
    
    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
    
    }
    
    @Override
    public void onPageSelected(int position) {
        uncheckMenuItems();
        
        mNavigationView.setCheckedItem(position);
    }
    
    private void uncheckMenuItems() {
        for (int i = 0; i < mNavigationView.getMenu().size(); i++) {
            MenuItem item = mNavigationView.getMenu().getItem(i);
            
            traverseAndUncheck(item);
        }
    }
    
    private void traverseAndUncheck(@NonNull MenuItem item) {
        if (item.hasSubMenu()) {
            for (int i = 0; i < item.getSubMenu().size(); i++) {
                MenuItem subItem = item.getSubMenu().getItem(i);
                
                traverseAndUncheck(subItem);
            }
        } else {
            item.setChecked(false);
        }
    }
    
    @Override
    public void onPageScrollStateChanged(int state) {
    
    }
}