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/*
* Copyright (C) 2017 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.dialer.contactsfragment;
import android.Manifest.permission;
import android.app.Fragment;
import android.app.LoaderManager.LoaderCallbacks;
import android.content.Loader;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract.Contacts;
import android.support.annotation.Nullable;
import android.support.v13.app.FragmentCompat;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.RecyclerView.Recycler;
import android.support.v7.widget.RecyclerView.State;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnScrollChangeListener;
import android.view.ViewGroup;
import android.widget.TextView;
import com.android.contacts.common.preference.ContactsPreferences;
import com.android.dialer.common.Assert;
import com.android.dialer.util.DialerUtils;
import com.android.dialer.util.IntentUtil;
import com.android.dialer.util.PermissionsUtil;
import com.android.dialer.widget.EmptyContentView;
import com.android.dialer.widget.EmptyContentView.OnEmptyViewActionButtonClickedListener;
/** Fragment containing a list of all contacts. */
public class ContactsFragment extends Fragment
implements LoaderCallbacks<Cursor>,
OnScrollChangeListener,
OnEmptyViewActionButtonClickedListener {
public static final int READ_CONTACTS_PERMISSION_REQUEST_CODE = 1;
private FastScroller fastScroller;
private TextView anchoredHeader;
private RecyclerView recyclerView;
private LinearLayoutManager manager;
private ContactsAdapter adapter;
private EmptyContentView emptyContentView;
private ContactsPreferences contactsPrefs;
private final ContactsPreferences.ChangeListener preferencesChangeListener =
() -> getLoaderManager().restartLoader(0, null, this);
@Override
public void onCreate(Bundle savedState) {
super.onCreate(savedState);
contactsPrefs = new ContactsPreferences(getContext());
contactsPrefs.registerChangeListener(preferencesChangeListener);
}
@Nullable
@Override
public View onCreateView(
LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_contacts, container, false);
fastScroller = (FastScroller) view.findViewById(R.id.fast_scroller);
anchoredHeader = (TextView) view.findViewById(R.id.header);
recyclerView = (RecyclerView) view.findViewById(R.id.recycler_view);
emptyContentView = (EmptyContentView) view.findViewById(R.id.empty_list_view);
emptyContentView.setImage(R.drawable.empty_contacts);
emptyContentView.setActionClickedListener(this);
if (PermissionsUtil.hasContactsReadPermissions(getContext())) {
getLoaderManager().initLoader(0, null, this);
} else {
emptyContentView.setDescription(R.string.permission_no_contacts);
emptyContentView.setActionLabel(R.string.permission_single_turn_on);
emptyContentView.setVisibility(View.VISIBLE);
}
return view;
}
/** @return a loader according to sort order and display order. */
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
boolean sortOrderPrimary =
(contactsPrefs.getSortOrder() == ContactsPreferences.SORT_ORDER_PRIMARY);
boolean displayOrderPrimary =
(contactsPrefs.getDisplayOrder() == ContactsPreferences.DISPLAY_ORDER_PRIMARY);
String sortKey = sortOrderPrimary ? Contacts.SORT_KEY_PRIMARY : Contacts.SORT_KEY_ALTERNATIVE;
return displayOrderPrimary
? ContactsCursorLoader.createInstanceDisplayNamePrimary(getContext(), sortKey)
: ContactsCursorLoader.createInstanceDisplayNameAlternative(getContext(), sortKey);
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
if (cursor.getCount() == 0) {
emptyContentView.setDescription(R.string.all_contacts_empty);
emptyContentView.setActionLabel(R.string.all_contacts_empty_add_contact_action);
emptyContentView.setVisibility(View.VISIBLE);
} else {
emptyContentView.setVisibility(View.GONE);
adapter = new ContactsAdapter(getContext(), cursor);
manager =
new LinearLayoutManager(getContext()) {
@Override
public void onLayoutChildren(Recycler recycler, State state) {
super.onLayoutChildren(recycler, state);
int itemsShown = findLastVisibleItemPosition() - findFirstVisibleItemPosition() + 1;
if (adapter.getItemCount() > itemsShown) {
fastScroller.setVisibility(View.VISIBLE);
recyclerView.setOnScrollChangeListener(ContactsFragment.this);
} else {
fastScroller.setVisibility(View.GONE);
}
}
};
recyclerView.setLayoutManager(manager);
recyclerView.setAdapter(adapter);
fastScroller.setup(adapter, manager);
}
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
recyclerView.setAdapter(null);
recyclerView.setOnScrollChangeListener(null);
adapter = null;
contactsPrefs.unregisterChangeListener();
}
/*
* When our recycler view updates, we need to ensure that our row headers and anchored header
* are in the correct state.
*
* The general rule is, when the row headers are shown, our anchored header is hidden. When the
* recycler view is scrolling through a sublist that has more than one element, we want to show
* out anchored header, to create the illusion that our row header has been anchored. In all
* other situations, we want to hide the anchor because that means we are transitioning between
* two sublists.
*/
@Override
public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
fastScroller.updateContainerAndScrollBarPosition(recyclerView);
int firstVisibleItem = manager.findFirstVisibleItemPosition();
int firstCompletelyVisible = manager.findFirstCompletelyVisibleItemPosition();
String anchoredHeaderString = adapter.getHeaderString(firstCompletelyVisible);
// If the user swipes to the top of the list very quickly, there is some strange behavior
// between this method updating headers and adapter#onBindViewHolder updating headers.
// To overcome this, we refresh the headers to ensure they are correct.
if (firstVisibleItem == firstCompletelyVisible && firstVisibleItem == 0) {
adapter.refreshHeaders();
anchoredHeader.setVisibility(View.INVISIBLE);
} else if (adapter.getHeaderString(firstVisibleItem).equals(anchoredHeaderString)) {
anchoredHeader.setText(anchoredHeaderString);
anchoredHeader.setVisibility(View.VISIBLE);
getContactHolder(firstVisibleItem).getHeaderView().setVisibility(View.INVISIBLE);
getContactHolder(firstCompletelyVisible).getHeaderView().setVisibility(View.INVISIBLE);
} else {
anchoredHeader.setVisibility(View.INVISIBLE);
getContactHolder(firstVisibleItem).getHeaderView().setVisibility(View.VISIBLE);
getContactHolder(firstCompletelyVisible).getHeaderView().setVisibility(View.VISIBLE);
}
}
private ContactViewHolder getContactHolder(int position) {
return ((ContactViewHolder) recyclerView.findViewHolderForAdapterPosition(position));
}
@Override
public void onEmptyViewActionButtonClicked() {
if (emptyContentView.getActionLabel() == R.string.permission_single_turn_on) {
FragmentCompat.requestPermissions(
this, new String[] {permission.READ_CONTACTS}, READ_CONTACTS_PERMISSION_REQUEST_CODE);
} else if (emptyContentView.getActionLabel()
== R.string.all_contacts_empty_add_contact_action) {
// Add new contact
DialerUtils.startActivityWithErrorToast(
getContext(), IntentUtil.getNewContactIntent(), R.string.add_contact_not_available);
} else {
throw Assert.createIllegalStateFailException("Invalid empty content view action label.");
}
}
@Override
public void onRequestPermissionsResult(
int requestCode, String[] permissions, int[] grantResults) {
if (requestCode == READ_CONTACTS_PERMISSION_REQUEST_CODE) {
if (grantResults.length >= 1 && PackageManager.PERMISSION_GRANTED == grantResults[0]) {
// Force a refresh of the data since we were missing the permission before this.
emptyContentView.setVisibility(View.GONE);
getLoaderManager().initLoader(0, null, this);
}
}
}
}
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