Move CalendarUtils into Calendar app

Bug 4575374

Change-Id: I325810002c63a82e712d7505327e77c388564d2c

1 files changed, 0 insertions, 348 deletions

diff --git a/core/java/android/util/CalendarUtils.java b/core/java/android/util/CalendarUtils.java
deleted file mode 100644
index b2b4897..0000000
--- a/core/java/android/util/CalendarUtils.java
+++ /dev/null
@@ -1,348 +0,0 @@
-/*
- * Copyright (C) 2010 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 android.util;
-
-import android.content.AsyncQueryHandler;
-import android.content.ContentResolver;
-import android.content.ContentValues;
-import android.content.Context;
-import android.content.SharedPreferences;
-import android.database.Cursor;
-import android.provider.Calendar.CalendarCache;
-import android.text.TextUtils;
-import android.text.format.DateUtils;
-import android.text.format.Time;
-
-import java.util.Formatter;
-import java.util.HashSet;
-import java.util.Locale;
-
-/**
- * A class containing utility methods related to Calendar apps.
- *
- * @hide
- */
-public class CalendarUtils {
-    private static final boolean DEBUG = false;
-    private static final String TAG = "CalendarUtils";
-
-    /**
-     * This class contains methods specific to reading and writing time zone
-     * values.
-     */
-    public static class TimeZoneUtils {
-        private static final String[] TIMEZONE_TYPE_ARGS = { CalendarCache.TIMEZONE_KEY_TYPE };
-        private static final String[] TIMEZONE_INSTANCES_ARGS =
-                { CalendarCache.TIMEZONE_KEY_INSTANCES };
-
-        private static StringBuilder mSB = new StringBuilder(50);
-        private static Formatter mF = new Formatter(mSB, Locale.getDefault());
-        private volatile static boolean mFirstTZRequest = true;
-        private volatile static boolean mTZQueryInProgress = false;
-
-        private volatile static boolean mUseHomeTZ = false;
-        private volatile static String mHomeTZ = Time.getCurrentTimezone();
-
-        private static HashSet<Runnable> mTZCallbacks = new HashSet<Runnable>();
-        private static int mToken = 1;
-        private static AsyncTZHandler mHandler;
-
-        // The name of the shared preferences file. This name must be maintained for historical
-        // reasons, as it's what PreferenceManager assigned the first time the file was created.
-        private final String mPrefsName;
-
-        /**
-         * This is the key used for writing whether or not a home time zone should
-         * be used in the Calendar app to the Calendar Preferences.
-         */
-        public static final String KEY_HOME_TZ_ENABLED = "preferences_home_tz_enabled";
-        /**
-         * This is the key used for writing the time zone that should be used if
-         * home time zones are enabled for the Calendar app.
-         */
-        public static final String KEY_HOME_TZ = "preferences_home_tz";
-
-        /**
-         * This is a helper class for handling the async queries and updates for the
-         * time zone settings in Calendar.
-         */
-        private class AsyncTZHandler extends AsyncQueryHandler {
-            public AsyncTZHandler(ContentResolver cr) {
-                super(cr);
-            }
-
-            @Override
-            protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
-                synchronized (mTZCallbacks) {
-                    if (cursor == null) {
-                        mTZQueryInProgress = false;
-                        mFirstTZRequest = true;
-                        return;
-                    }
-
-                    boolean writePrefs = false;
-                    // Check the values in the db
-                    int keyColumn = cursor.getColumnIndexOrThrow(CalendarCache.KEY);
-                    int valueColumn = cursor.getColumnIndexOrThrow(CalendarCache.VALUE);
-                    while(cursor.moveToNext()) {
-                        String key = cursor.getString(keyColumn);
-                        String value = cursor.getString(valueColumn);
-                        if (TextUtils.equals(key, CalendarCache.TIMEZONE_KEY_TYPE)) {
-                            boolean useHomeTZ = !TextUtils.equals(
-                                    value, CalendarCache.TIMEZONE_TYPE_AUTO);
-                            if (useHomeTZ != mUseHomeTZ) {
-                                writePrefs = true;
-                                mUseHomeTZ = useHomeTZ;
-                            }
-                        } else if (TextUtils.equals(
-                                key, CalendarCache.TIMEZONE_KEY_INSTANCES_PREVIOUS)) {
-                            if (!TextUtils.isEmpty(value) && !TextUtils.equals(mHomeTZ, value)) {
-                                writePrefs = true;
-                                mHomeTZ = value;
-                            }
-                        }
-                    }
-                    cursor.close();
-                    if (writePrefs) {
-                        SharedPreferences prefs = getSharedPreferences((Context)cookie, mPrefsName);
-                        // Write the prefs
-                        setSharedPreference(prefs, KEY_HOME_TZ_ENABLED, mUseHomeTZ);
-                        setSharedPreference(prefs, KEY_HOME_TZ, mHomeTZ);
-                    }
-
-                    mTZQueryInProgress = false;
-                    for (Runnable callback : mTZCallbacks) {
-                        if (callback != null) {
-                            callback.run();
-                        }
-                    }
-                    mTZCallbacks.clear();
-                }
-            }
-        }
-
-        /**
-         * The name of the file where the shared prefs for Calendar are stored
-         * must be provided. All activities within an app should provide the
-         * same preferences name or behavior may become erratic.
-         *
-         * @param prefsName
-         */
-        public TimeZoneUtils(String prefsName) {
-            mPrefsName = prefsName;
-        }
-
-        /**
-         * Formats a date or a time range according to the local conventions.
-         *
-         * This formats a date/time range using Calendar's time zone and the
-         * local conventions for the region of the device.
-         *
-         * If the {@link DateUtils#FORMAT_UTC} flag is used it will pass in
-         * the UTC time zone instead.
-         *
-         * @param context the context is required only if the time is shown
-         * @param startMillis the start time in UTC milliseconds
-         * @param endMillis the end time in UTC milliseconds
-         * @param flags a bit mask of options See
-         * {@link DateUtils#formatDateRange(Context, Formatter, long, long, int, String) formatDateRange}
-         * @return a string containing the formatted date/time range.
-         */
-        public String formatDateRange(Context context, long startMillis,
-                long endMillis, int flags) {
-            String date;
-            String tz;
-            if ((flags & DateUtils.FORMAT_UTC) != 0) {
-                tz = Time.TIMEZONE_UTC;
-            } else {
-                tz = getTimeZone(context, null);
-            }
-            synchronized (mSB) {
-                mSB.setLength(0);
-                date = DateUtils.formatDateRange(context, mF, startMillis, endMillis, flags,
-                        tz).toString();
-            }
-            return date;
-        }
-
-        /**
-         * Writes a new home time zone to the db.
-         *
-         * Updates the home time zone in the db asynchronously and updates
-         * the local cache. Sending a time zone of
-         * {@link CalendarCache#TIMEZONE_TYPE_AUTO} will cause it to be set
-         * to the device's time zone. null or empty tz will be ignored.
-         *
-         * @param context The calling activity
-         * @param timeZone The time zone to set Calendar to, or
-         * {@link CalendarCache#TIMEZONE_TYPE_AUTO}
-         */
-        public void setTimeZone(Context context, String timeZone) {
-            if (TextUtils.isEmpty(timeZone)) {
-                if (DEBUG) {
-                    Log.d(TAG, "Empty time zone, nothing to be done.");
-                }
-                return;
-            }
-            boolean updatePrefs = false;
-            synchronized (mTZCallbacks) {
-                if (CalendarCache.TIMEZONE_TYPE_AUTO.equals(timeZone)) {
-                    if (mUseHomeTZ) {
-                        updatePrefs = true;
-                    }
-                    mUseHomeTZ = false;
-                } else {
-                    if (!mUseHomeTZ || !TextUtils.equals(mHomeTZ, timeZone)) {
-                        updatePrefs = true;
-                    }
-                    mUseHomeTZ = true;
-                    mHomeTZ = timeZone;
-                }
-            }
-            if (updatePrefs) {
-                // Write the prefs
-                SharedPreferences prefs = getSharedPreferences(context, mPrefsName);
-                setSharedPreference(prefs, KEY_HOME_TZ_ENABLED, mUseHomeTZ);
-                setSharedPreference(prefs, KEY_HOME_TZ, mHomeTZ);
-
-                // Update the db
-                ContentValues values = new ContentValues();
-                if (mHandler != null) {
-                    mHandler.cancelOperation(mToken);
-                }
-
-                mHandler = new AsyncTZHandler(context.getContentResolver());
-
-                // skip 0 so query can use it
-                if (++mToken == 0) {
-                    mToken = 1;
-                }
-
-                // Write the use home tz setting
-                values.put(CalendarCache.VALUE, mUseHomeTZ ? CalendarCache.TIMEZONE_TYPE_HOME
-                        : CalendarCache.TIMEZONE_TYPE_AUTO);
-                mHandler.startUpdate(mToken, null, CalendarCache.URI, values, CalendarCache.WHERE,
-                        TIMEZONE_TYPE_ARGS);
-
-                // If using a home tz write it to the db
-                if (mUseHomeTZ) {
-                    ContentValues values2 = new ContentValues();
-                    values2.put(CalendarCache.VALUE, mHomeTZ);
-                    mHandler.startUpdate(mToken, null, CalendarCache.URI, values2,
-                            CalendarCache.WHERE, TIMEZONE_INSTANCES_ARGS);
-                }
-            }
-        }
-
-        /**
-         * Gets the time zone that Calendar should be displayed in
-         *
-         * This is a helper method to get the appropriate time zone for Calendar. If this
-         * is the first time this method has been called it will initiate an asynchronous
-         * query to verify that the data in preferences is correct. The callback supplied
-         * will only be called if this query returns a value other than what is stored in
-         * preferences and should cause the calling activity to refresh anything that
-         * depends on calling this method.
-         *
-         * @param context The calling activity
-         * @param callback The runnable that should execute if a query returns new values
-         * @return The string value representing the time zone Calendar should display
-         */
-        public String getTimeZone(Context context, Runnable callback) {
-            synchronized (mTZCallbacks){
-                if (mFirstTZRequest) {
-                    mTZQueryInProgress = true;
-                    mFirstTZRequest = false;
-
-                    SharedPreferences prefs = getSharedPreferences(context, mPrefsName);
-                    mUseHomeTZ = prefs.getBoolean(KEY_HOME_TZ_ENABLED, false);
-                    mHomeTZ = prefs.getString(KEY_HOME_TZ, Time.getCurrentTimezone());
-
-                    // When the async query returns it should synchronize on
-                    // mTZCallbacks, update mUseHomeTZ, mHomeTZ, and the
-                    // preferences, set mTZQueryInProgress to false, and call all
-                    // the runnables in mTZCallbacks.
-                    if (mHandler == null) {
-                        mHandler = new AsyncTZHandler(context.getContentResolver());
-                    }
-                    mHandler.startQuery(0, context, CalendarCache.URI, CalendarCache.POJECTION,
-                            null, null, null);
-                }
-                if (mTZQueryInProgress) {
-                    mTZCallbacks.add(callback);
-                }
-            }
-            return mUseHomeTZ ? mHomeTZ : Time.getCurrentTimezone();
-        }
-
-        /**
-         * Forces a query of the database to check for changes to the time zone.
-         * This should be called if another app may have modified the db. If a
-         * query is already in progress the callback will be added to the list
-         * of callbacks to be called when it returns.
-         *
-         * @param context The calling activity
-         * @param callback The runnable that should execute if a query returns
-         *            new values
-         */
-        public void forceDBRequery(Context context, Runnable callback) {
-            synchronized (mTZCallbacks){
-                if (mTZQueryInProgress) {
-                    mTZCallbacks.add(callback);
-                    return;
-                }
-                mFirstTZRequest = true;
-                getTimeZone(context, callback);
-            }
-        }
-    }
-
-        /**
-         * A helper method for writing a String value to the preferences
-         * asynchronously.
-         *
-         * @param context A context with access to the correct preferences
-         * @param key The preference to write to
-         * @param value The value to write
-         */
-        public static void setSharedPreference(SharedPreferences prefs, String key, String value) {
-//            SharedPreferences prefs = getSharedPreferences(context);
-            SharedPreferences.Editor editor = prefs.edit();
-            editor.putString(key, value);
-            editor.apply();
-        }
-
-        /**
-         * A helper method for writing a boolean value to the preferences
-         * asynchronously.
-         *
-         * @param context A context with access to the correct preferences
-         * @param key The preference to write to
-         * @param value The value to write
-         */
-        public static void setSharedPreference(SharedPreferences prefs, String key, boolean value) {
-//            SharedPreferences prefs = getSharedPreferences(context, prefsName);
-            SharedPreferences.Editor editor = prefs.edit();
-            editor.putBoolean(key, value);
-            editor.apply();
-        }
-
-        /** Return a properly configured SharedPreferences instance */
-        public static SharedPreferences getSharedPreferences(Context context, String prefsName) {
-            return context.getSharedPreferences(prefsName, Context.MODE_PRIVATE);
-        }
-}