package com.android.launcher3.compat;
import android.content.Context;
+import android.icu.text.AlphabeticIndex;
+
import com.android.launcher3.Utilities;
-import java.lang.reflect.Constructor;
-import java.lang.reflect.Method;
-import java.text.Normalizer;
import java.util.Locale;
-/**
- * Fallback class to support Alphabetic indexing if not supported by the framework.
- * TODO(winsonc): disable for non-english locales
- */
-class BaseAlphabeticIndex {
-
- private static final String BUCKETS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-";
- private static final int UNKNOWN_BUCKET_INDEX = BUCKETS.length() - 1;
-
- public BaseAlphabeticIndex() {}
-
- /**
- * Sets the max number of the label buckets in this index.
- */
- public void setMaxLabelCount(int count) {
- // Not currently supported
- }
-
- /**
- * Returns the index of the bucket in which the given string should appear.
- */
- protected int getBucketIndex(String s) {
- if (s.isEmpty()) {
- return UNKNOWN_BUCKET_INDEX;
- }
- String asciiName = Normalizer.normalize(s, Normalizer.Form.NFD)
- .replaceAll("[^\\p{ASCII}]", "");
- if (asciiName.isEmpty()) {
- return UNKNOWN_BUCKET_INDEX;
- }
- int index = BUCKETS.indexOf(asciiName.substring(0, 1).toUpperCase());
- if (index != -1) {
- return index;
- }
- return UNKNOWN_BUCKET_INDEX;
- }
-
- /**
- * Returns the label for the bucket at the given index (as returned by getBucketIndex).
- */
- protected String getBucketLabel(int index) {
- return BUCKETS.substring(index, index + 1);
- }
-}
-
-/**
- * Reflected libcore.icu.AlphabeticIndex implementation, falls back to the base alphabetic index.
- */
-public class AlphabeticIndexCompat extends BaseAlphabeticIndex {
+public class AlphabeticIndexCompat {
private static final String MID_DOT = "\u2219";
- private Object mAlphabeticIndex;
- private Method mAddLabelsMethod;
- private Method mSetMaxLabelCountMethod;
- private Method mGetBucketIndexMethod;
- private Method mGetBucketLabelMethod;
- private boolean mHasValidAlphabeticIndex;
+ private AlphabeticIndex.ImmutableIndex mAlphabeticIndex;
private String mDefaultMiscLabel;
public AlphabeticIndexCompat(Context context) {
- super();
- try {
- Locale curLocale = context.getResources().getConfiguration().locale;
- Class clazz = Class.forName("libcore.icu.AlphabeticIndex");
- Constructor ctor = clazz.getConstructor(Locale.class);
- mAddLabelsMethod = clazz.getDeclaredMethod("addLabels", Locale.class);
- mSetMaxLabelCountMethod = clazz.getDeclaredMethod("setMaxLabelCount", int.class);
- mGetBucketIndexMethod = clazz.getDeclaredMethod("getBucketIndex", String.class);
- mGetBucketLabelMethod = clazz.getDeclaredMethod("getBucketLabel", int.class);
- mAlphabeticIndex = ctor.newInstance(curLocale);
- try {
- // Ensure we always have some base English locale buckets
- if (!curLocale.getLanguage().equals(Locale.ENGLISH.getLanguage())) {
- mAddLabelsMethod.invoke(mAlphabeticIndex, Locale.ENGLISH);
- }
- } catch (Exception e) {
- e.printStackTrace();
- }
- if (curLocale.getLanguage().equals(Locale.JAPANESE.getLanguage())) {
- // Japanese character 他 ("misc")
- mDefaultMiscLabel = "\u4ed6";
- // TODO(winsonc, omakoto): We need to handle Japanese sections better, especially the kanji
- } else {
- // Dot
- mDefaultMiscLabel = MID_DOT;
- }
- mHasValidAlphabeticIndex = true;
- } catch (Exception e) {
- mHasValidAlphabeticIndex = false;
- }
- }
-
- /**
- * Sets the max number of the label buckets in this index.
- * (ICU 51 default is 99)
- */
- public void setMaxLabelCount(int count) {
- if (mHasValidAlphabeticIndex) {
- try {
- mSetMaxLabelCountMethod.invoke(mAlphabeticIndex, count);
- } catch (Exception e) {
- e.printStackTrace();
- }
+ Locale curLocale = context.getResources().getConfiguration().getLocales().get(0);
+ mAlphabeticIndex = new AlphabeticIndex(curLocale).buildImmutableIndex();
+ if (curLocale.getLanguage().equals(Locale.JAPANESE.getLanguage())) {
+ // Japanese character 他 ("misc")
+ mDefaultMiscLabel = "\u4ed6";
+ // TODO(winsonc, omakoto): We need to handle Japanese sections better, especially the kanji
} else {
- super.setMaxLabelCount(count);
+ // Dot
+ mDefaultMiscLabel = MID_DOT;
}
}
*/
public String computeSectionName(CharSequence cs) {
String s = Utilities.trim(cs);
- String sectionName = getBucketLabel(getBucketIndex(s));
+ int bucketIndex = mAlphabeticIndex.getBucketIndex(s);
+ String sectionName = mAlphabeticIndex.getBucket(bucketIndex).getLabel();
if (Utilities.trim(sectionName).isEmpty()) {
if (s.length() > 0) {
int c = s.codePointAt(0);
}
return sectionName;
}
-
- /**
- * Returns the index of the bucket in which {@param s} should appear.
- * Function is synchronized because underlying routine walks an iterator
- * whose state is maintained inside the index object.
- */
- protected int getBucketIndex(String s) {
- if (mHasValidAlphabeticIndex) {
- try {
- return (Integer) mGetBucketIndexMethod.invoke(mAlphabeticIndex, s);
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
- return super.getBucketIndex(s);
- }
-
- /**
- * Returns the label for the bucket at the given index (as returned by getBucketIndex).
- */
- protected String getBucketLabel(int index) {
- if (mHasValidAlphabeticIndex) {
- try {
- return (String) mGetBucketLabelMethod.invoke(mAlphabeticIndex, index);
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
- return super.getBucketLabel(index);
- }
}