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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
*
* 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.ide.eclipse.adt.internal.editors.layout.configuration;
import static com.android.ide.common.resources.configuration.LocaleQualifier.FAKE_VALUE;
import com.android.annotations.NonNull;
import com.android.annotations.Nullable;
import com.android.ide.common.resources.configuration.FolderConfiguration;
import com.android.ide.common.resources.configuration.LocaleQualifier;
import org.eclipse.swt.graphics.Image;
/**
* A language,region pair
*/
public class Locale {
/**
* A special marker region qualifier representing any region
*/
public static final LocaleQualifier ANY_QUALIFIER = new LocaleQualifier(FAKE_VALUE);
/**
* A locale which matches any language and region
*/
public static final Locale ANY = new Locale(ANY_QUALIFIER);
/**
* The locale qualifier, or {@link #ANY_QUALIFIER} if this locale matches
* any locale
*/
@NonNull
public final LocaleQualifier qualifier;
/**
* Constructs a new {@linkplain Locale} matching a given language in a given
* locale.
*
* @param locale the locale
*/
private Locale(@NonNull
LocaleQualifier locale) {
qualifier = locale;
}
/**
* Constructs a new {@linkplain Locale} matching a given language in a given
* specific locale.
*
* @param locale the locale
* @return a locale with the given locale
*/
@NonNull
public static Locale create(@NonNull
LocaleQualifier locale) {
return new Locale(locale);
}
/**
* Constructs a new {@linkplain Locale} for the given folder configuration
*
* @param folder the folder configuration
* @return a locale with the given language and region
*/
public static Locale create(FolderConfiguration folder) {
LocaleQualifier locale = folder.getLocaleQualifier();
if (locale == null) {
return ANY;
} else {
return new Locale(locale);
}
}
/**
* Constructs a new {@linkplain Locale} for the given locale string, e.g.
* "zh", "en-rUS", or "b+eng+US".
*
* @param localeString the locale description
* @return the corresponding locale
*/
@NonNull
public static Locale create(@NonNull
String localeString) {
// Load locale. Note that this can get overwritten by the
// project-wide settings read below.
LocaleQualifier qualifier = LocaleQualifier.getQualifier(localeString);
if (qualifier != null) {
return new Locale(qualifier);
} else {
return ANY;
}
}
/**
* Returns a flag image to use for this locale
*
* @return a flag image, or a default globe icon
*/
@NonNull
public Image getFlagImage() {
String languageCode = qualifier.hasLanguage() ? qualifier.getLanguage() : null;
if (languageCode == null) {
return FlagManager.getGlobeIcon();
}
String regionCode = hasRegion() ? qualifier.getRegion() : null;
FlagManager icons = FlagManager.get();
Image image = icons.getFlag(languageCode, regionCode);
if (image != null) {
return image;
} else {
return FlagManager.getGlobeIcon();
}
}
/**
* Returns true if this locale specifies a specific language. This is true
* for all locales except {@link #ANY}.
*
* @return true if this locale specifies a specific language
*/
public boolean hasLanguage() {
return !qualifier.hasFakeValue();
}
/**
* Returns true if this locale specifies a specific region
*
* @return true if this locale specifies a region
*/
public boolean hasRegion() {
return qualifier.getRegion() != null && !FAKE_VALUE.equals(qualifier.getRegion());
}
/**
* Returns the locale formatted as language-region. If region is not set,
* language is returned. If language is not set, empty string is returned.
*/
public String toLocaleId() {
return qualifier == ANY_QUALIFIER ? "" : qualifier.getTag();
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + qualifier.hashCode();
return result;
}
@Override
public boolean equals(@Nullable
Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Locale other = (Locale) obj;
if (!qualifier.equals(other.qualifier))
return false;
return true;
}
@Override
public String toString() {
return qualifier.getTag();
}
}
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