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/*
* Copyright (C) 2016 The Android Open Source Project
*
* 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.android.emergency.view;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import androidx.annotation.LayoutRes;
import android.support.design.widget.TabLayout;
import android.support.design.widget.TabLayout.TabLayoutOnPageChangeListener;
import android.support.design.widget.TabLayout.ViewPagerOnTabSelectedListener;
import androidx.legacy.app.FragmentStatePagerAdapter;
import androidx.viewpager.widget.ViewPager;
import androidx.preference.PreferenceManager;
import android.text.TextUtils;
import android.util.Pair;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.WindowManager;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toolbar;
import android.widget.ViewFlipper;
import com.android.emergency.PreferenceKeys;
import com.android.emergency.R;
import com.android.emergency.edit.EditInfoActivity;
import com.android.emergency.util.PreferenceUtils;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
import java.util.ArrayList;
/**
* Activity for viewing emergency information.
*/
public class ViewInfoActivity extends Activity {
private TextView mPersonalCardLargeItem;
private SharedPreferences mSharedPreferences;
private LinearLayout mPersonalCard;
private ViewFlipper mViewFlipper;
private ViewPagerAdapter mTabsAdapter;
private TabLayout mTabLayout;
private ArrayList<Pair<String, Fragment>> mFragments;
private Menu mMenu;
@Override
public void setContentView(@LayoutRes int layoutResID) {
super.setContentView(layoutResID);
setupTabs();
Toolbar toolbar = (Toolbar) findViewById(R.id.action_bar);
setActionBar(toolbar);
getActionBar().setDisplayHomeAsUpEnabled(true);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.view_activity_layout);
mSharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
mPersonalCard = (LinearLayout) findViewById(R.id.name_and_dob_linear_layout);
mPersonalCardLargeItem = (TextView) findViewById(R.id.personal_card_large);
mViewFlipper = (ViewFlipper) findViewById(R.id.view_flipper);
MetricsLogger.visible(this, MetricsEvent.ACTION_VIEW_EMERGENCY_INFO);
}
@Override
public void onResume() {
super.onResume();
loadName();
// Update the tabs: new info might have been added/deleted from the edit screen that
// could lead to adding/removing a fragment
setupTabs();
maybeHideTabs();
}
private void loadName() {
String name = mSharedPreferences.getString(PreferenceKeys.KEY_NAME, "");
if (TextUtils.isEmpty(name)) {
mPersonalCard.setVisibility(View.GONE);
} else {
mPersonalCard.setVisibility(View.VISIBLE);
mPersonalCardLargeItem.setText(name);
}
}
private void maybeHideTabs() {
// Show a TextView with "No information provided" if there are no fragments.
if (mFragments.size() == 0) {
mViewFlipper.setDisplayedChild(
mViewFlipper.indexOfChild(findViewById(R.id.no_info)));
} else {
mViewFlipper.setDisplayedChild(mViewFlipper.indexOfChild(findViewById(R.id.tabs)));
}
TabLayout tabLayout = mTabLayout;
if (mFragments.size() <= 1) {
tabLayout.setVisibility(View.GONE);
} else {
tabLayout.setVisibility(View.VISIBLE);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.view_info_menu, menu);
mMenu = menu;
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
onBackPressed();
return true;
case R.id.action_edit:
Intent intent = new Intent(this, EditInfoActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
return true;
}
return super.onOptionsItemSelected(item);
}
/** Return the tab layout. */
@VisibleForTesting
public TabLayout getTabLayout() {
return mTabLayout;
}
@VisibleForTesting
public Menu getMenu() {
return mMenu;
}
/** Return the fragments. */
@VisibleForTesting
public ArrayList<Pair<String, Fragment>> getFragments() {
return mFragments;
}
private ArrayList<Pair<String, Fragment>> setUpFragments() {
// Return only the fragments that have at least one piece of information set:
ArrayList<Pair<String, Fragment>> fragments = new ArrayList<>(2);
if (PreferenceUtils.hasAtLeastOnePreferenceSet(this)) {
fragments.add(Pair.create(getResources().getString(R.string.tab_title_info),
ViewEmergencyInfoFragment.newInstance()));
}
if (PreferenceUtils.hasAtLeastOneEmergencyContact(this)) {
fragments.add(Pair.create(getResources().getString(R.string.tab_title_contacts),
ViewEmergencyContactsFragment.newInstance()));
}
return fragments;
}
private void setupTabs() {
mFragments = setUpFragments();
mTabLayout = (TabLayout) findViewById(R.id.sliding_tabs);
if (mTabsAdapter == null) {
// The viewpager that will host the section contents.
ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
mTabsAdapter = new ViewPagerAdapter(getFragmentManager());
viewPager.setAdapter(mTabsAdapter);
mTabLayout.setTabsFromPagerAdapter(mTabsAdapter);
// Set a listener via setOnTabSelectedListener(OnTabSelectedListener) to be notified
// when any tab's selection state has been changed.
mTabLayout.setOnTabSelectedListener(
new TabLayout.ViewPagerOnTabSelectedListener(viewPager));
// Use a TabLayout.TabLayoutOnPageChangeListener to forward the scroll and selection
// changes to this layout
viewPager.addOnPageChangeListener(new TabLayoutOnPageChangeListener(mTabLayout));
} else {
mTabsAdapter.notifyDataSetChanged();
mTabLayout.setTabsFromPagerAdapter(mTabsAdapter);
}
}
/** The adapter used to handle the two fragments. */
protected class ViewPagerAdapter extends FragmentStatePagerAdapter {
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
return mFragments.get(position).second;
}
@Override
public int getCount() {
return mFragments.size();
}
@Override
public CharSequence getPageTitle(int position) {
return mFragments.get(position).first;
}
@Override
public int getItemPosition(Object object) {
// The default implementation assumes that items will never change position and always
// returns POSITION_UNCHANGED. This is how you can specify that the positions can change
return FragmentStatePagerAdapter.POSITION_NONE;
}
}
}
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