packages/apps/Dialer/java/com/android/dialer/app/calllog/CallLogFragment.java

/*
 * Copyright (C) 2011 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.app.calllog;

import static android.Manifest.permission.READ_CALL_LOG;

import android.app.Activity;
import android.app.Fragment;
import android.app.KeyguardManager;
import android.content.ContentResolver;
import android.content.Context;
import android.content.pm.PackageManager;
import android.database.ContentObserver;
import android.database.Cursor;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.provider.CallLog;
import android.provider.CallLog.Calls;
import android.provider.ContactsContract;
import android.support.annotation.CallSuper;
import android.support.annotation.Nullable;
import android.support.v13.app.FragmentCompat;
import android.support.v13.app.FragmentCompat.OnRequestPermissionsResultCallback;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.android.dialer.app.Bindings;
import com.android.dialer.app.R;
import com.android.dialer.app.calllog.CallLogAdapter.CallFetcher;
import com.android.dialer.app.calllog.CallLogAdapter.MultiSelectRemoveView;
import com.android.dialer.app.calllog.calllogcache.CallLogCache;
import com.android.dialer.app.contactinfo.ContactInfoCache;
import com.android.dialer.app.contactinfo.ContactInfoCache.OnContactInfoChangedListener;
import com.android.dialer.app.contactinfo.ExpirableCacheHeadlessFragment;
import com.android.dialer.app.voicemail.VoicemailPlaybackPresenter;
import com.android.dialer.blocking.FilteredNumberAsyncQueryHandler;
import com.android.dialer.common.Assert;
import com.android.dialer.common.FragmentUtils;
import com.android.dialer.common.LogUtil;
import com.android.dialer.configprovider.ConfigProviderComponent;
import com.android.dialer.database.CallLogQueryHandler;
import com.android.dialer.database.CallLogQueryHandler.Listener;
import com.android.dialer.location.GeoUtil;
import com.android.dialer.logging.DialerImpression;
import com.android.dialer.logging.Logger;
import com.android.dialer.metrics.Metrics;
import com.android.dialer.metrics.MetricsComponent;
import com.android.dialer.metrics.jank.RecyclerViewJankLogger;
import com.android.dialer.oem.CequintCallerIdManager;
import com.android.dialer.performancereport.PerformanceReport;
import com.android.dialer.phonenumbercache.ContactInfoHelper;
import com.android.dialer.util.PermissionsUtil;
import com.android.dialer.widget.EmptyContentView;
import com.android.dialer.widget.EmptyContentView.OnEmptyViewActionButtonClickedListener;
import java.util.Arrays;

/**
 * Displays a list of call log entries. To filter for a particular kind of call (all, missed or
 * voicemails), specify it in the constructor.
 */
public class CallLogFragment extends Fragment
    implements Listener,
        CallFetcher,
        MultiSelectRemoveView,
        OnEmptyViewActionButtonClickedListener,
        OnRequestPermissionsResultCallback,
        CallLogModalAlertManager.Listener,
        OnClickListener {
  private static final String KEY_FILTER_TYPE = "filter_type";
  private static final String KEY_LOG_LIMIT = "log_limit";
  private static final String KEY_DATE_LIMIT = "date_limit";
  private static final String KEY_IS_CALL_LOG_ACTIVITY = "is_call_log_activity";
  private static final String KEY_HAS_READ_CALL_LOG_PERMISSION = "has_read_call_log_permission";
  private static final String KEY_REFRESH_DATA_REQUIRED = "refresh_data_required";
  private static final String KEY_SELECT_ALL_MODE = "select_all_mode_checked";

  // No limit specified for the number of logs to show; use the CallLogQueryHandler's default.
  private static final int NO_LOG_LIMIT = -1;
  // No date-based filtering.
  private static final int NO_DATE_LIMIT = 0;

  private static final int PHONE_PERMISSIONS_REQUEST_CODE = 1;

  private static final int EVENT_UPDATE_DISPLAY = 1;

  private static final long MILLIS_IN_MINUTE = 60 * 1000;
  private final Handler handler = new Handler();
  // See issue 6363009
  private final ContentObserver callLogObserver = new CustomContentObserver();
  private final ContentObserver contactsObserver = new CustomContentObserver();
  private View multiSelectUnSelectAllViewContent;
  private TextView selectUnselectAllViewText;
  private ImageView selectUnselectAllIcon;
  private RecyclerView recyclerView;
  private LinearLayoutManager layoutManager;
  private CallLogAdapter adapter;
  private CallLogQueryHandler callLogQueryHandler;
  private boolean scrollToTop;
  private EmptyContentView emptyListView;
  private ContactInfoCache contactInfoCache;
  private final OnContactInfoChangedListener onContactInfoChangedListener =
      new OnContactInfoChangedListener() {
        @Override
        public void onContactInfoChanged() {
          if (adapter != null) {
            adapter.notifyDataSetChanged();
          }
        }
      };
  private boolean refreshDataRequired;
  private boolean hasReadCallLogPermission;
  // Exactly same variable is in Fragment as a package private.
  private boolean menuVisible = true;
  // Default to all calls.
  private int callTypeFilter = CallLogQueryHandler.CALL_TYPE_ALL;
  // Log limit - if no limit is specified, then the default in {@link CallLogQueryHandler}
  // will be used.
  private int logLimit = NO_LOG_LIMIT;
  // Date limit (in millis since epoch) - when non-zero, only calls which occurred on or after
  // the date filter are included.  If zero, no date-based filtering occurs.
  private long dateLimit = NO_DATE_LIMIT;
  /*
   * True if this instance of the CallLogFragment shown in the CallLogActivity.
   */
  private boolean isCallLogActivity = false;
  private boolean selectAllMode;
  private final Handler displayUpdateHandler =
      new Handler() {
        @Override
        public void handleMessage(Message msg) {
          switch (msg.what) {
            case EVENT_UPDATE_DISPLAY:
              refreshData();
              rescheduleDisplayUpdate();
              break;
            default:
              throw Assert.createAssertionFailException("Invalid message: " + msg);
          }
        }
      };
  protected CallLogModalAlertManager modalAlertManager;
  private ViewGroup modalAlertView;

  public CallLogFragment() {
    this(CallLogQueryHandler.CALL_TYPE_ALL, NO_LOG_LIMIT);
  }

  public CallLogFragment(int filterType) {
    this(filterType, NO_LOG_LIMIT);
  }

  public CallLogFragment(int filterType, boolean isCallLogActivity) {
    this(filterType, NO_LOG_LIMIT);
    this.isCallLogActivity = isCallLogActivity;
  }

  public CallLogFragment(int filterType, int logLimit) {
    this(filterType, logLimit, NO_DATE_LIMIT);
  }

  /**
   * Creates a call log fragment, filtering to include only calls of the desired type, occurring
   * after the specified date.
   *
   * @param filterType type of calls to include.
   * @param dateLimit limits results to calls occurring on or after the specified date.
   */
  public CallLogFragment(int filterType, long dateLimit) {
    this(filterType, NO_LOG_LIMIT, dateLimit);
  }

  /**
   * Creates a call log fragment, filtering to include only calls of the desired type, occurring
   * after the specified date. Also provides a means to limit the number of results returned.
   *
   * @param filterType type of calls to include.
   * @param logLimit limits the number of results to return.
   * @param dateLimit limits results to calls occurring on or after the specified date.
   */
  public CallLogFragment(int filterType, int logLimit, long dateLimit) {
    callTypeFilter = filterType;
    this.logLimit = logLimit;
    this.dateLimit = dateLimit;
  }

  @Override
  public void onCreate(Bundle state) {
    LogUtil.enterBlock("CallLogFragment.onCreate");
    super.onCreate(state);
    refreshDataRequired = true;
    if (state != null) {
      callTypeFilter = state.getInt(KEY_FILTER_TYPE, callTypeFilter);
      logLimit = state.getInt(KEY_LOG_LIMIT, logLimit);
      dateLimit = state.getLong(KEY_DATE_LIMIT, dateLimit);
      isCallLogActivity = state.getBoolean(KEY_IS_CALL_LOG_ACTIVITY, isCallLogActivity);
      hasReadCallLogPermission = state.getBoolean(KEY_HAS_READ_CALL_LOG_PERMISSION, false);
      refreshDataRequired = state.getBoolean(KEY_REFRESH_DATA_REQUIRED, refreshDataRequired);
      selectAllMode = state.getBoolean(KEY_SELECT_ALL_MODE, false);
    }

    final Activity activity = getActivity();
    final ContentResolver resolver = activity.getContentResolver();
    callLogQueryHandler = new CallLogQueryHandler(activity, resolver, this, logLimit);
    setHasOptionsMenu(true);
  }

  /** Called by the CallLogQueryHandler when the list of calls has been fetched or updated. */
  @Override
  public boolean onCallsFetched(Cursor cursor) {
    if (getActivity() == null || getActivity().isFinishing()) {
      // Return false; we did not take ownership of the cursor
      return false;
    }
    adapter.invalidatePositions();
    adapter.setLoading(false);
    adapter.changeCursor(cursor);
    // This will update the state of the "Clear call log" menu item.
    getActivity().invalidateOptionsMenu();

    if (cursor != null && cursor.getCount() > 0) {
      recyclerView.setPaddingRelative(
          recyclerView.getPaddingStart(),
          0,
          recyclerView.getPaddingEnd(),
          getResources().getDimensionPixelSize(R.dimen.floating_action_button_list_bottom_padding));
      emptyListView.setVisibility(View.GONE);
    } else {
      recyclerView.setPaddingRelative(
          recyclerView.getPaddingStart(), 0, recyclerView.getPaddingEnd(), 0);
      emptyListView.setVisibility(View.VISIBLE);
    }
    if (scrollToTop) {
      // The smooth-scroll animation happens over a fixed time period.
      // As a result, if it scrolls through a large portion of the list,
      // each frame will jump so far from the previous one that the user
      // will not experience the illusion of downward motion.  Instead,
      // if we're not already near the top of the list, we instantly jump
      // near the top, and animate from there.
      if (layoutManager.findFirstVisibleItemPosition() > 5) {
        // TODO: Jump to near the top, then begin smooth scroll.
        recyclerView.smoothScrollToPosition(0);
      }
      // Workaround for framework issue: the smooth-scroll doesn't
      // occur if setSelection() is called immediately before.
      handler.post(
          new Runnable() {
            @Override
            public void run() {
              if (getActivity() == null || getActivity().isFinishing()) {
                return;
              }
              recyclerView.smoothScrollToPosition(0);
            }
          });

      scrollToTop = false;
    }
    return true;
  }

  @Override
  public void onVoicemailStatusFetched(Cursor statusCursor) {}

  @Override
  public void onVoicemailUnreadCountFetched(Cursor cursor) {}

  @Override
  public void onMissedCallsUnreadCountFetched(Cursor cursor) {}

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedState) {
    View view = inflater.inflate(R.layout.call_log_fragment, container, false);
    setupView(view);
    return view;
  }

  protected void setupView(View view) {
    recyclerView = (RecyclerView) view.findViewById(R.id.recycler_view);
    if (ConfigProviderComponent.get(getContext())
        .getConfigProvider()
        .getBoolean("is_call_log_item_anim_null", false)) {
      recyclerView.setItemAnimator(null);
    }
    recyclerView.setHasFixedSize(true);
    recyclerView.addOnScrollListener(
        new RecyclerViewJankLogger(
            MetricsComponent.get(getContext()).metrics(), Metrics.OLD_CALL_LOG_JANK_EVENT_NAME));
    layoutManager = new LinearLayoutManager(getActivity());
    recyclerView.setLayoutManager(layoutManager);
    PerformanceReport.logOnScrollStateChange(recyclerView);
    emptyListView = (EmptyContentView) view.findViewById(R.id.empty_list_view);
    emptyListView.setImage(R.drawable.empty_call_log);
    emptyListView.setActionClickedListener(this);
    modalAlertView = (ViewGroup) view.findViewById(R.id.modal_message_container);
    modalAlertManager =
        new CallLogModalAlertManager(LayoutInflater.from(getContext()), modalAlertView, this);
    multiSelectUnSelectAllViewContent =
        view.findViewById(R.id.multi_select_select_all_view_content);
    selectUnselectAllViewText = (TextView) view.findViewById(R.id.select_all_view_text);
    selectUnselectAllIcon = (ImageView) view.findViewById(R.id.select_all_view_icon);
    multiSelectUnSelectAllViewContent.setOnClickListener(null);
    selectUnselectAllIcon.setOnClickListener(this);
    selectUnselectAllViewText.setOnClickListener(this);
  }

  protected void setupData() {
    int activityType =
        isCallLogActivity
            ? CallLogAdapter.ACTIVITY_TYPE_CALL_LOG
            : CallLogAdapter.ACTIVITY_TYPE_DIALTACTS;
    String currentCountryIso = GeoUtil.getCurrentCountryIso(getActivity());

    contactInfoCache =
        new ContactInfoCache(
            ExpirableCacheHeadlessFragment.attach((AppCompatActivity) getActivity())
                .getRetainedCache(),
            new ContactInfoHelper(getActivity(), currentCountryIso),
            onContactInfoChangedListener);
    adapter =
        Bindings.getLegacy(getActivity())
            .newCallLogAdapter(
                getActivity(),
                recyclerView,
                this,
                this,
                // We aren't calling getParentUnsafe because CallLogActivity doesn't need to
                // implement this listener
                FragmentUtils.getParent(
                    this, CallLogAdapter.OnActionModeStateChangedListener.class),
                new CallLogCache(getActivity()),
                contactInfoCache,
                getVoicemailPlaybackPresenter(),
                new FilteredNumberAsyncQueryHandler(getActivity()),
                activityType);
    recyclerView.setAdapter(adapter);
    if (adapter.getOnScrollListener() != null) {
      recyclerView.addOnScrollListener(adapter.getOnScrollListener());
    }
    fetchCalls();
  }

  @Nullable
  protected VoicemailPlaybackPresenter getVoicemailPlaybackPresenter() {
    return null;
  }

  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    LogUtil.enterBlock("CallLogFragment.onActivityCreated");
    super.onActivityCreated(savedInstanceState);
    setupData();
    updateSelectAllState(savedInstanceState);
    adapter.onRestoreInstanceState(savedInstanceState);
  }

  private void updateSelectAllState(Bundle savedInstanceState) {
    if (savedInstanceState != null) {
      if (savedInstanceState.getBoolean(KEY_SELECT_ALL_MODE, false)) {
        updateSelectAllIcon();
      }
    }
  }

  @Override
  public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    updateEmptyMessage(callTypeFilter);
  }

  @Override
  public void onResume() {
    LogUtil.enterBlock("CallLogFragment.onResume");
    super.onResume();
    final boolean hasReadCallLogPermission =
        PermissionsUtil.hasPermission(getActivity(), READ_CALL_LOG);
    if (!this.hasReadCallLogPermission && hasReadCallLogPermission) {
      // We didn't have the permission before, and now we do. Force a refresh of the call log.
      // Note that this code path always happens on a fresh start, but mRefreshDataRequired
      // is already true in that case anyway.
      refreshDataRequired = true;
      updateEmptyMessage(callTypeFilter);
    }

    ContentResolver resolver = getActivity().getContentResolver();
    if (PermissionsUtil.hasCallLogReadPermissions(getContext())) {
      resolver.registerContentObserver(CallLog.CONTENT_URI, true, callLogObserver);
    } else {
      LogUtil.w("CallLogFragment.onCreate", "call log permission not available");
    }
    if (PermissionsUtil.hasContactsReadPermissions(getContext())) {
      resolver.registerContentObserver(
          ContactsContract.Contacts.CONTENT_URI, true, contactsObserver);
    } else {
      LogUtil.w("CallLogFragment.onCreate", "contacts permission not available.");
    }

    this.hasReadCallLogPermission = hasReadCallLogPermission;

    /*
     * Always clear the filtered numbers cache since users could have blocked/unblocked numbers
     * from the settings page
     */
    adapter.clearFilteredNumbersCache();
    refreshData();
    adapter.onResume();

    rescheduleDisplayUpdate();
    // onResume() may also be called as a "side" page on the ViewPager, which is not visible.
    if (getUserVisibleHint()) {
      onVisible();
    }
  }

  @Override
  public void onPause() {
    LogUtil.enterBlock("CallLogFragment.onPause");
    getActivity().getContentResolver().unregisterContentObserver(callLogObserver);
    getActivity().getContentResolver().unregisterContentObserver(contactsObserver);
    if (getUserVisibleHint()) {
      onNotVisible();
    }
    cancelDisplayUpdate();
    adapter.onPause();
    super.onPause();
  }

  @Override
  public void onStart() {
    LogUtil.enterBlock("CallLogFragment.onStart");
    super.onStart();
    CequintCallerIdManager cequintCallerIdManager = null;
    if (CequintCallerIdManager.isCequintCallerIdEnabled(getContext())) {
      cequintCallerIdManager = new CequintCallerIdManager();
    }
    contactInfoCache.setCequintCallerIdManager(cequintCallerIdManager);
  }

  @Override
  public void onStop() {
    LogUtil.enterBlock("CallLogFragment.onStop");
    super.onStop();
    adapter.onStop();
    contactInfoCache.stop();
  }

  @Override
  public void onDestroy() {
    LogUtil.enterBlock("CallLogFragment.onDestroy");
    if (adapter != null) {
      adapter.changeCursor(null);
    }
    super.onDestroy();
  }

  @Override
  public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putInt(KEY_FILTER_TYPE, callTypeFilter);
    outState.putInt(KEY_LOG_LIMIT, logLimit);
    outState.putLong(KEY_DATE_LIMIT, dateLimit);
    outState.putBoolean(KEY_IS_CALL_LOG_ACTIVITY, isCallLogActivity);
    outState.putBoolean(KEY_HAS_READ_CALL_LOG_PERMISSION, hasReadCallLogPermission);
    outState.putBoolean(KEY_REFRESH_DATA_REQUIRED, refreshDataRequired);
    outState.putBoolean(KEY_SELECT_ALL_MODE, selectAllMode);
    if (adapter != null) {
      adapter.onSaveInstanceState(outState);
    }
  }

  @Override
  public void fetchCalls() {
    callLogQueryHandler.fetchCalls(callTypeFilter, dateLimit);
    if (!isCallLogActivity
        && getActivity() != null
        && !getActivity().isFinishing()
        && FragmentUtils.getParent(this, CallLogFragmentListener.class) != null) {
      FragmentUtils.getParentUnsafe(this, CallLogFragmentListener.class).updateTabUnreadCounts();
    }
  }

  private void updateEmptyMessage(int filterType) {
    final Context context = getActivity();
    if (context == null) {
      return;
    }

    if (!PermissionsUtil.hasPermission(context, READ_CALL_LOG)) {
      emptyListView.setDescription(R.string.permission_no_calllog);
      emptyListView.setActionLabel(R.string.permission_single_turn_on);
      return;
    }

    final int messageId;
    switch (filterType) {
      case Calls.MISSED_TYPE:
        messageId = R.string.call_log_missed_empty;
        break;
      case Calls.VOICEMAIL_TYPE:
        messageId = R.string.call_log_voicemail_empty;
        break;
      case CallLogQueryHandler.CALL_TYPE_ALL:
        messageId = R.string.call_log_all_empty;
        break;
      default:
        throw new IllegalArgumentException(
            "Unexpected filter type in CallLogFragment: " + filterType);
    }
    emptyListView.setDescription(messageId);
    if (isCallLogActivity) {
      emptyListView.setActionLabel(EmptyContentView.NO_LABEL);
    } else if (filterType == CallLogQueryHandler.CALL_TYPE_ALL) {
      emptyListView.setActionLabel(R.string.call_log_all_empty_action);
    } else {
      emptyListView.setActionLabel(EmptyContentView.NO_LABEL);
    }
  }

  public CallLogAdapter getAdapter() {
    return adapter;
  }

  @Override
  public void setMenuVisibility(boolean menuVisible) {
    super.setMenuVisibility(menuVisible);
    if (this.menuVisible != menuVisible) {
      this.menuVisible = menuVisible;
      if (menuVisible && isResumed()) {
        refreshData();
      }
    }
  }

  /** Requests updates to the data to be shown. */
  private void refreshData() {
    // Prevent unnecessary refresh.
    if (refreshDataRequired) {
      // Mark all entries in the contact info cache as out of date, so they will be looked up
      // again once being shown.
      contactInfoCache.invalidate();
      adapter.setLoading(true);

      fetchCalls();
      callLogQueryHandler.fetchVoicemailStatus();
      callLogQueryHandler.fetchMissedCallsUnreadCount();
      refreshDataRequired = false;
    } else {
      // Refresh the display of the existing data to update the timestamp text descriptions.
      adapter.notifyDataSetChanged();
    }
  }

  @Override
  public void onEmptyViewActionButtonClicked() {
    final Activity activity = getActivity();
    if (activity == null) {
      return;
    }

    String[] deniedPermissions =
        PermissionsUtil.getPermissionsCurrentlyDenied(
            getContext(), PermissionsUtil.allPhoneGroupPermissionsUsedInDialer);
    if (deniedPermissions.length > 0) {
      LogUtil.i(
          "CallLogFragment.onEmptyViewActionButtonClicked",
          "Requesting permissions: " + Arrays.toString(deniedPermissions));
      FragmentCompat.requestPermissions(this, deniedPermissions, PHONE_PERMISSIONS_REQUEST_CODE);
    } else if (!isCallLogActivity) {
      LogUtil.i("CallLogFragment.onEmptyViewActionButtonClicked", "showing dialpad");
      // Show dialpad if we are not in the call log activity.
      FragmentUtils.getParentUnsafe(this, HostInterface.class).showDialpad();
    }
  }

  @Override
  public void onRequestPermissionsResult(
      int requestCode, String[] permissions, int[] grantResults) {
    if (requestCode == PHONE_PERMISSIONS_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.
        refreshDataRequired = true;
      }
    }
  }

  /** Schedules an update to the relative call times (X mins ago). */
  private void rescheduleDisplayUpdate() {
    if (!displayUpdateHandler.hasMessages(EVENT_UPDATE_DISPLAY)) {
      long time = System.currentTimeMillis();
      // This value allows us to change the display relatively close to when the time changes
      // from one minute to the next.
      long millisUtilNextMinute = MILLIS_IN_MINUTE - (time % MILLIS_IN_MINUTE);
      displayUpdateHandler.sendEmptyMessageDelayed(EVENT_UPDATE_DISPLAY, millisUtilNextMinute);
    }
  }

  /** Cancels any pending update requests to update the relative call times (X mins ago). */
  private void cancelDisplayUpdate() {
    displayUpdateHandler.removeMessages(EVENT_UPDATE_DISPLAY);
  }

  /** Mark all missed calls as read if Keyguard not locked and possible. */
  void markMissedCallsAsReadAndRemoveNotifications() {
    if (callLogQueryHandler != null
        && !getContext().getSystemService(KeyguardManager.class).isKeyguardLocked()) {
      callLogQueryHandler.markMissedCallsAsRead();
      CallLogNotificationsService.cancelAllMissedCalls(getContext());
    }
  }

  @CallSuper
  public void onVisible() {
    LogUtil.enterBlock("CallLogFragment.onPageSelected");
    if (getActivity() != null && FragmentUtils.getParent(this, HostInterface.class) != null) {
      FragmentUtils.getParentUnsafe(this, HostInterface.class)
          .enableFloatingButton(!isModalAlertVisible());
    }
  }

  public boolean isModalAlertVisible() {
    return modalAlertManager != null && !modalAlertManager.isEmpty();
  }

  @CallSuper
  public void onNotVisible() {
    LogUtil.enterBlock("CallLogFragment.onPageUnselected");
  }

  @Override
  public void onShowModalAlert(boolean show) {
    LogUtil.d(
        "CallLogFragment.onShowModalAlert",
        "show: %b, fragment: %s, isVisible: %b",
        show,
        this,
        getUserVisibleHint());
    getAdapter().notifyDataSetChanged();
    HostInterface hostInterface = FragmentUtils.getParent(this, HostInterface.class);
    if (show) {
      recyclerView.setVisibility(View.GONE);
      modalAlertView.setVisibility(View.VISIBLE);
      if (hostInterface != null && getUserVisibleHint()) {
        hostInterface.enableFloatingButton(false);
      }
    } else {
      recyclerView.setVisibility(View.VISIBLE);
      modalAlertView.setVisibility(View.GONE);
      if (hostInterface != null && getUserVisibleHint()) {
        hostInterface.enableFloatingButton(true);
      }
    }
  }

  @Override
  public void showMultiSelectRemoveView(boolean show) {
    multiSelectUnSelectAllViewContent.setVisibility(show ? View.VISIBLE : View.GONE);
    multiSelectUnSelectAllViewContent.setAlpha(show ? 0 : 1);
    multiSelectUnSelectAllViewContent.animate().alpha(show ? 1 : 0).start();
    if (show) {
      FragmentUtils.getParentUnsafe(this, CallLogFragmentListener.class)
          .showMultiSelectRemoveView(true);
    } else {
      // This method is called after onDestroy. In DialtactsActivity, ListsFragment implements this
      // interface and never goes away with configuration changes so this is safe. MainActivity
      // removes that extra layer though, so we need to check if the parent is still there.
      CallLogFragmentListener listener =
          FragmentUtils.getParent(this, CallLogFragmentListener.class);
      if (listener != null) {
        listener.showMultiSelectRemoveView(false);
      }
    }
  }

  @Override
  public void setSelectAllModeToFalse() {
    selectAllMode = false;
    selectUnselectAllIcon.setImageDrawable(
        getContext().getDrawable(R.drawable.ic_empty_check_mark_white_24dp));
  }

  @Override
  public void tapSelectAll() {
    LogUtil.i("CallLogFragment.tapSelectAll", "imitating select all");
    selectAllMode = true;
    updateSelectAllIcon();
  }

  @Override
  public void onClick(View v) {
    selectAllMode = !selectAllMode;
    if (selectAllMode) {
      Logger.get(v.getContext()).logImpression(DialerImpression.Type.MULTISELECT_SELECT_ALL);
    } else {
      Logger.get(v.getContext()).logImpression(DialerImpression.Type.MULTISELECT_UNSELECT_ALL);
    }
    updateSelectAllIcon();
  }

  private void updateSelectAllIcon() {
    if (selectAllMode) {
      selectUnselectAllIcon.setImageDrawable(
          getContext().getDrawable(R.drawable.ic_check_mark_blue_24dp));
      getAdapter().onAllSelected();
    } else {
      selectUnselectAllIcon.setImageDrawable(
          getContext().getDrawable(R.drawable.ic_empty_check_mark_white_24dp));
      getAdapter().onAllDeselected();
    }
  }

  public interface HostInterface {

    void showDialpad();

    void enableFloatingButton(boolean enabled);
  }

  protected class CustomContentObserver extends ContentObserver {

    public CustomContentObserver() {
      super(handler);
    }

    @Override
    public void onChange(boolean selfChange) {
      refreshDataRequired = true;
    }
  }

  /** Useful callback for ListsFragment children to use to call into ListsFragment. */
  public interface CallLogFragmentListener {

    /**
     * External method to update unread count because the unread count changes when the user expands
     * a voicemail in the call log or when the user expands an unread call in the call history tab.
     */
    void updateTabUnreadCounts();

    void showMultiSelectRemoveView(boolean show);
  }
}