Merge "Stop reloading calllog when there's no update."

import android.app.ListFragment;

import android.content.Context;

import android.content.Intent;

import android.database.ContentObserver;

import android.database.Cursor;

import android.net.Uri;

import android.os.Bundle;

import android.os.Handler;

import android.os.RemoteException;

import android.os.ServiceManager;

import android.provider.CallLog;

import android.provider.ContactsContract;

import android.provider.CallLog.Calls;

import android.telephony.PhoneNumberUtils;

import android.text.TextUtils;

    private final Handler mHandler = new Handler();

    private class CustomContentObserver extends ContentObserver {

        public CustomContentObserver() {

            super(mHandler);

        }

        @Override

        public void onChange(boolean selfChange) {

            mRefreshDataRequired = true;

        }

    }

    // See issue 6363009

    private final ContentObserver mCallLogObserver = new CustomContentObserver();

    private final ContentObserver mContactsObserver = new CustomContentObserver();

    private boolean mRefreshDataRequired = true;

    // Exactly same variable is in Fragment as a package private.

    private boolean mMenuVisible = true;

        mCallLogQueryHandler = new CallLogQueryHandler(getActivity().getContentResolver(), this);

        mKeyguardManager =

                (KeyguardManager) getActivity().getSystemService(Context.KEYGUARD_SERVICE);

        getActivity().getContentResolver().registerContentObserver(

                CallLog.CONTENT_URI, true, mCallLogObserver);

        getActivity().getContentResolver().registerContentObserver(

                ContactsContract.Contacts.CONTENT_URI, true, mContactsObserver);

        setHasOptionsMenu(true);

    }

        super.onDestroy();

        mAdapter.stopRequestProcessing();

        mAdapter.changeCursor(null);

        getActivity().getContentResolver().unregisterContentObserver(mCallLogObserver);

        getActivity().getContentResolver().unregisterContentObserver(mContactsObserver);

    }

    @Override

    /** Requests updates to the data to be shown. */

    private void refreshData() {

        // Prevent unnecessary refresh.

        if (mRefreshDataRequired) {

            // Mark all entries in the contact info cache as out of date, so they will be looked up

            // again once being shown.

            mAdapter.invalidateCache();

            startCallsQuery();

            startVoicemailStatusQuery();

            updateOnEntry();

            mRefreshDataRequired = false;

        }

    }

    /** Removes the missed call notifications. */