Examples with TimeZoneNames android.icu.text.TimeZoneNames used on opensource projects

Example 11 with TimeZoneNames

use of android.icu.text.TimeZoneNames in project android_frameworks_base by DirtyUnicorns.

the class ZoneGetter method getZonesList.

public static List<Map<String, Object>> getZonesList(Context context) {
    final Locale locale = Locale.getDefault();
    final Date now = new Date();
    final TimeZoneNames timeZoneNames = TimeZoneNames.getInstance(locale);
    // The display name chosen for each zone entry depends on whether the zone is one associated
    // with the country of the user's chosen locale. For "local" zones we prefer the "long name"
    // (e.g. "Europe/London" -> "British Summer Time" for people in the UK). For "non-local"
    // zones we prefer the exemplar location (e.g. "Europe/London" -> "London" for English
    // speakers from outside the UK). This heuristic is based on the fact that people are
    // typically familiar with their local timezones and exemplar locations don't always match
    // modern-day expectations for people living in the country covered. Large countries like
    // China that mostly use a single timezone (olson id: "Asia/Shanghai") may not live near
    // "Shanghai" and prefer the long name over the exemplar location. The only time we don't
    // follow this policy for local zones is when Android supplies multiple olson IDs to choose
    // from and the use of a zone's long name leads to ambiguity. For example, at the time of
    // writing Android lists 5 olson ids for Australia which collapse to 2 different zone names
    // in winter but 4 different zone names in summer. The ambiguity leads to the users
    // selecting the wrong olson ids.
    // Get the list of olson ids to display to the user.
    List<String> olsonIdsToDisplayList = readTimezonesToDisplay(context);
    // Store the information we are going to need more than once.
    final int zoneCount = olsonIdsToDisplayList.size();
    final String[] olsonIdsToDisplay = new String[zoneCount];
    final TimeZone[] timeZones = new TimeZone[zoneCount];
    final String[] gmtOffsetStrings = new String[zoneCount];
    for (int i = 0; i < zoneCount; i++) {
        String olsonId = olsonIdsToDisplayList.get(i);
        olsonIdsToDisplay[i] = olsonId;
        TimeZone tz = TimeZone.getTimeZone(olsonId);
        timeZones[i] = tz;
        gmtOffsetStrings[i] = getGmtOffsetString(locale, tz, now);
    }
    // Create a lookup of local zone IDs.
    Set<String> localZoneIds = new HashSet<String>();
    for (String olsonId : libcore.icu.TimeZoneNames.forLocale(locale)) {
        localZoneIds.add(olsonId);
    }
    // Work out whether the display names we would show by default would be ambiguous.
    Set<String> localZoneNames = new HashSet<String>();
    boolean useExemplarLocationForLocalNames = false;
    for (int i = 0; i < zoneCount; i++) {
        String olsonId = olsonIdsToDisplay[i];
        if (localZoneIds.contains(olsonId)) {
            TimeZone tz = timeZones[i];
            String displayName = getZoneLongName(timeZoneNames, tz, now);
            if (displayName == null) {
                displayName = gmtOffsetStrings[i];
            }
            boolean nameIsUnique = localZoneNames.add(displayName);
            if (!nameIsUnique) {
                useExemplarLocationForLocalNames = true;
                break;
            }
        }
    }
    // Generate the list of zone entries to return.
    List<Map<String, Object>> zones = new ArrayList<Map<String, Object>>();
    for (int i = 0; i < zoneCount; i++) {
        String olsonId = olsonIdsToDisplay[i];
        TimeZone tz = timeZones[i];
        String gmtOffsetString = gmtOffsetStrings[i];
        boolean isLocalZoneId = localZoneIds.contains(olsonId);
        boolean preferLongName = isLocalZoneId && !useExemplarLocationForLocalNames;
        String displayName;
        if (preferLongName) {
            displayName = getZoneLongName(timeZoneNames, tz, now);
        } else {
            displayName = timeZoneNames.getExemplarLocationName(tz.getID());
            if (displayName == null || displayName.isEmpty()) {
                // getZoneExemplarLocation can return null. Fall back to the long name.
                displayName = getZoneLongName(timeZoneNames, tz, now);
            }
        }
        if (displayName == null || displayName.isEmpty()) {
            displayName = gmtOffsetString;
        }
        int offsetMillis = tz.getOffset(now.getTime());
        Map<String, Object> displayEntry = createDisplayEntry(tz, gmtOffsetString, displayName, offsetMillis);
        zones.add(displayEntry);
    }
    return zones;
}

Example 12 with TimeZoneNames

use of android.icu.text.TimeZoneNames in project j2objc by google.

the class TimeZone method _getDisplayName.

/**
 * internal version (which is called by public APIs) accepts
 * SHORT, LONG, SHORT_GENERIC, LONG_GENERIC, SHORT_GMT, LONG_GMT,
 * SHORT_COMMONLY_USED and GENERIC_LOCATION.
 */
private String _getDisplayName(int style, boolean daylight, ULocale locale) {
    if (locale == null) {
        throw new NullPointerException("locale is null");
    }
    String result = null;
    if (style == GENERIC_LOCATION || style == LONG_GENERIC || style == SHORT_GENERIC) {
        // Generic format
        TimeZoneFormat tzfmt = TimeZoneFormat.getInstance(locale);
        long date = System.currentTimeMillis();
        Output<TimeType> timeType = new Output<TimeType>(TimeType.UNKNOWN);
        switch(style) {
            case GENERIC_LOCATION:
                result = tzfmt.format(Style.GENERIC_LOCATION, this, date, timeType);
                break;
            case LONG_GENERIC:
                result = tzfmt.format(Style.GENERIC_LONG, this, date, timeType);
                break;
            case SHORT_GENERIC:
                result = tzfmt.format(Style.GENERIC_SHORT, this, date, timeType);
                break;
        }
        // appropriate for the requested daylight value.
        if (daylight && timeType.value == TimeType.STANDARD || !daylight && timeType.value == TimeType.DAYLIGHT) {
            int offset = daylight ? getRawOffset() + getDSTSavings() : getRawOffset();
            result = (style == SHORT_GENERIC) ? tzfmt.formatOffsetShortLocalizedGMT(offset) : tzfmt.formatOffsetLocalizedGMT(offset);
        }
    } else if (style == LONG_GMT || style == SHORT_GMT) {
        // Offset format
        TimeZoneFormat tzfmt = TimeZoneFormat.getInstance(locale);
        int offset = daylight && useDaylightTime() ? getRawOffset() + getDSTSavings() : getRawOffset();
        switch(style) {
            case LONG_GMT:
                result = tzfmt.formatOffsetLocalizedGMT(offset);
                break;
            case SHORT_GMT:
                result = tzfmt.formatOffsetISO8601Basic(offset, false, false, false);
                break;
        }
    } else {
        // Specific format
        assert (style == LONG || style == SHORT || style == SHORT_COMMONLY_USED);
        // Gets the name directly from TimeZoneNames
        long date = System.currentTimeMillis();
        TimeZoneNames tznames = TimeZoneNames.getInstance(locale);
        NameType nameType = null;
        switch(style) {
            case LONG:
                nameType = daylight ? NameType.LONG_DAYLIGHT : NameType.LONG_STANDARD;
                break;
            case SHORT:
            case SHORT_COMMONLY_USED:
                nameType = daylight ? NameType.SHORT_DAYLIGHT : NameType.SHORT_STANDARD;
                break;
        }
        result = tznames.getDisplayName(ZoneMeta.getCanonicalCLDRID(this), nameType, date);
        if (result == null) {
            // Fallback to localized GMT
            TimeZoneFormat tzfmt = TimeZoneFormat.getInstance(locale);
            int offset = daylight && useDaylightTime() ? getRawOffset() + getDSTSavings() : getRawOffset();
            result = (style == LONG) ? tzfmt.formatOffsetLocalizedGMT(offset) : tzfmt.formatOffsetShortLocalizedGMT(offset);
        }
    }
    assert (result != null);
    return result;
}

Example 13 with TimeZoneNames

use of android.icu.text.TimeZoneNames in project j2objc by google.

the class ZoneName method toZid.

public static String toZid(String zid, Locale locale) {
    // Android-changed: delegate to ICU.
    TimeZoneNames tzNames = TimeZoneNames.getInstance(locale);
    if (tzNames.getAvailableMetaZoneIDs().contains(zid)) {
        // Compare TimeZoneFormat#getTargetRegion.
        ULocale uLocale = ULocale.forLocale(locale);
        String region = uLocale.getCountry();
        if (region.length() == 0) {
            uLocale = ULocale.addLikelySubtags(uLocale);
            region = uLocale.getCountry();
        }
        zid = tzNames.getReferenceZoneID(zid, region);
    }
    return toZid(zid);
}

Example 14 with TimeZoneNames

use of android.icu.text.TimeZoneNames in project j2objc by google.

the class TimeZoneFormatTest method TestFormatTZDBNames.

@Test
public void TestFormatTZDBNames() {
    // 2013-01-15T00:00:00Z
    final Date dateJan = new Date(1358208000000L);
    // 2013-07-15T00:00:00Z
    final Date dateJul = new Date(1373846400000L);
    final Object[][] TESTDATA = { { "en", "America/Chicago", dateJan, Style.SPECIFIC_SHORT, "CST", TimeType.STANDARD }, { "en", "Asia/Shanghai", dateJan, Style.SPECIFIC_SHORT, "CST", TimeType.STANDARD }, { "zh_Hans", "Asia/Shanghai", dateJan, Style.SPECIFIC_SHORT, "CST", TimeType.STANDARD }, { "en", "America/Los_Angeles", dateJul, Style.SPECIFIC_LONG, // No long display names
    "GMT-07:00", TimeType.DAYLIGHT }, { "ja", "America/Los_Angeles", dateJul, Style.SPECIFIC_SHORT, "PDT", TimeType.DAYLIGHT }, { "en", "Australia/Sydney", dateJan, Style.SPECIFIC_SHORT, "AEDT", TimeType.DAYLIGHT }, { "en", "Australia/Sydney", dateJul, Style.SPECIFIC_SHORT, "AEST", TimeType.STANDARD } };
    for (Object[] testCase : TESTDATA) {
        ULocale loc = new ULocale((String) testCase[0]);
        TimeZoneFormat tzfmt = TimeZoneFormat.getInstance(loc).cloneAsThawed();
        TimeZoneNames tzdbNames = TimeZoneNames.getTZDBInstance(loc);
        tzfmt.setTimeZoneNames(tzdbNames);
        TimeZone tz = TimeZone.getTimeZone((String) testCase[1]);
        Output<TimeType> timeType = new Output<TimeType>();
        String out = tzfmt.format((Style) testCase[3], tz, ((Date) testCase[2]).getTime(), timeType);
        if (!out.equals(testCase[4]) || timeType.value != testCase[5]) {
            errln("Format result for [locale=" + testCase[0] + ",tzid=" + testCase[1] + ",date=" + testCase[2] + ",style=" + testCase[3] + "]: expected [output=" + testCase[4] + ",type=" + testCase[5] + "]; actual [output=" + out + ",type=" + timeType.value + "]");
        }
    }
}

Example 15 with TimeZoneNames

use of android.icu.text.TimeZoneNames in project j2objc by google.

the class TimeZoneFormatTest method TestDefaultTimeZoneNames.

// Coverage for default implementation and abstract methods in base class.
@Test
public void TestDefaultTimeZoneNames() {
    long date = System.currentTimeMillis();
    TimeZoneNames.Factory factory;
    try {
        Class cls = Class.forName("android.icu.text.TimeZoneNames$DefaultTimeZoneNames$FactoryImpl");
        factory = (Factory) cls.newInstance();
    } catch (Exception e) {
        errln("Could not create class DefaultTimeZoneNames.FactoryImpl: " + e.getClass() + ": " + e.getMessage());
        return;
    }
    TimeZoneNames tzn = factory.getTimeZoneNames(ULocale.ENGLISH);
    assertEquals("Abstract: getAvailableMetaZoneIDs()", tzn.getAvailableMetaZoneIDs(), Collections.emptySet());
    assertEquals("Abstract: getAvailableMetaZoneIDs(String tzID)", tzn.getAvailableMetaZoneIDs("America/Chicago"), Collections.emptySet());
    assertEquals("Abstract: getMetaZoneID(String tzID, long date)", tzn.getMetaZoneID("America/Chicago", date), null);
    assertEquals("Abstract: getReferenceZoneID(String mzID, String region)", tzn.getReferenceZoneID("America_Central", "IT"), null);
    assertEquals("Abstract: getMetaZoneDisplayName(String mzID, NameType type)", tzn.getMetaZoneDisplayName("America_Central", NameType.LONG_DAYLIGHT), null);
    assertEquals("Abstract: getTimeZoneDisplayName(String mzID, NameType type)", tzn.getTimeZoneDisplayName("America/Chicago", NameType.LONG_DAYLIGHT), null);
    assertEquals("Abstract: find(CharSequence text, int start, EnumSet<NameType> nameTypes)", tzn.find("foo", 0, EnumSet.noneOf(NameType.class)), Collections.emptyList());
    // Other abstract-class methods that aren't covered
    tzn = new TimeZoneNamesInheriter();
    try {
        tzn.find(null, 0, null);
    } catch (UnsupportedOperationException e) {
        assertEquals("find() exception", "The method is not implemented in TimeZoneNames base class.", e.getMessage());
    }
}