Make LocalePicker Fragment.

The logic calling selectFirst() is removed as
- There's no comment why it is needed.
- Actually SetupWizard gets stack as that forces users to see
  WirelessSettings in SetupWizard.

The other changes:
- Move back LocalePickerFragment to LocalePicker.
- Make <activity> for LocalePicker in AndroidManifest <activity-alias>
- Add a short comment about how getComponent(), which should be a key
  for understanding how top-level settings work.
- Modify LanguageSettings so that it corectly points LocalePicker as
  a fragment.

Change-Id: I78d356e40af896ba1aab72fba12c90467371c7b0

1 files changed, 171 insertions, 6 deletions

diff --git a/src/com/android/settings/LocalePicker.java b/src/com/android/settings/LocalePicker.java
index f669712..65c738a 100644
--- a/src/com/android/settings/LocalePicker.java
+++ b/src/com/android/settings/LocalePicker.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007 The Android Open Source Project
+ * 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.
@@ -17,12 +17,177 @@
 package com.android.settings;
 
 import android.app.Activity;
+import android.app.ActivityManagerNative;
+import android.app.IActivityManager;
+import android.app.ListFragment;
+import android.app.backup.BackupManager;
+import android.content.res.Configuration;
+import android.content.res.Resources;
 import android.os.Bundle;
+import android.os.RemoteException;
+import android.util.Log;
+import android.view.View;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+
+import java.text.Collator;
+import java.util.Arrays;
+import java.util.Locale;
+
+public class LocalePicker extends ListFragment {
+    private static final String TAG = "LocalePicker";
+    private static final boolean DEBUG = false;
+
+    Loc[] mLocales;
+    String[] mSpecialLocaleCodes;
+    String[] mSpecialLocaleNames;
+
+    Activity mActivity;
+
+    private static class Loc implements Comparable<Loc> {
+        static Collator sCollator = Collator.getInstance();
+
+        String label;
+        Locale locale;
+
+        public Loc(String label, Locale locale) {
+            this.label = label;
+            this.locale = locale;
+        }
+
+        @Override
+        public String toString() {
+            return this.label;
+        }
+
+        @Override
+        public int compareTo(Loc another) {
+            return sCollator.compare(this.label, another.label);
+        }
+    }
+
+    private void setUpLocaleList() {
+        final Resources resources = mActivity.getResources();
+        mSpecialLocaleCodes = resources.getStringArray(R.array.special_locale_codes);
+        mSpecialLocaleNames = resources.getStringArray(R.array.special_locale_names);
+
+        final String[] locales = mActivity.getAssets().getLocales();
+        Arrays.sort(locales);
+        final int origSize = locales.length;
+        Loc[] preprocess = new Loc[origSize];
+        int finalSize = 0;
+        for (int i = 0 ; i < origSize; i++ ) {
+            String s = locales[i];
+            int len = s.length();
+            if (len == 5) {
+                String language = s.substring(0, 2);
+                String country = s.substring(3, 5);
+                Locale l = new Locale(language, country);
+
+                if (finalSize == 0) {
+                    if (DEBUG) {
+                        Log.v(TAG, "adding initial "+ toTitleCase(l.getDisplayLanguage(l)));
+                    }
+                    preprocess[finalSize++] =
+                            new Loc(toTitleCase(l.getDisplayLanguage(l)), l);
+                } else {
+                    // check previous entry:
+                    //  same lang and a country -> upgrade to full name and
+                    //    insert ours with full name
+                    //  diff lang -> insert ours with lang-only name
+                    if (preprocess[finalSize-1].locale.getLanguage().equals(
+                            language)) {
+                        if (DEBUG) {
+                            Log.v(TAG, "backing up and fixing "+
+                                    preprocess[finalSize-1].label+" to "+
+                                    getDisplayName(preprocess[finalSize-1].locale));
+                        }
+                        preprocess[finalSize-1].label = toTitleCase(
+                                getDisplayName(preprocess[finalSize-1].locale));
+                        if (DEBUG) {
+                            Log.v(TAG, "  and adding "+ toTitleCase(getDisplayName(l)));
+                        }
+                        preprocess[finalSize++] =
+                                new Loc(toTitleCase(getDisplayName(l)), l);
+                    } else {
+                        String displayName;
+                        if (s.equals("zz_ZZ")) {
+                            displayName = "Pseudo...";
+                        } else {
+                            displayName = toTitleCase(l.getDisplayLanguage(l));
+                        }
+                        if (DEBUG) {
+                            Log.v(TAG, "adding "+displayName);
+                        }
+                        preprocess[finalSize++] = new Loc(displayName, l);
+                    }
+                }
+            }
+        }
+        mLocales = new Loc[finalSize];
+        for (int i = 0; i < finalSize ; i++) {
+            mLocales[i] = preprocess[i];
+        }
+        Arrays.sort(mLocales);
+        final int layoutId = R.layout.locale_picker_item;
+        final int fieldId = R.id.locale;
+        final ArrayAdapter<Loc> adapter =
+                new ArrayAdapter<Loc>(mActivity, layoutId, fieldId, mLocales);
+        setListAdapter(adapter);
+    }
 
-public class LocalePicker extends Activity {
     @Override
-    public void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.locale_picker);
+    public void onActivityCreated(final Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+        mActivity = getActivity();
+        setUpLocaleList();
+    }
+
+    private static String toTitleCase(String s) {
+        if (s.length() == 0) {
+            return s;
+        }
+
+        return Character.toUpperCase(s.charAt(0)) + s.substring(1);
+    }
+
+    private String getDisplayName(Locale l) {
+        String code = l.toString();
+
+        for (int i = 0; i < mSpecialLocaleCodes.length; i++) {
+            if (mSpecialLocaleCodes[i].equals(code)) {
+                return mSpecialLocaleNames[i];
+            }
+        }
+
+        return l.getDisplayName(l);
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        getListView().requestFocus();
+    }
+
+    @Override
+    public void onListItemClick(ListView l, View v, int position, long id) {
+        try {
+            IActivityManager am = ActivityManagerNative.getDefault();
+            Configuration config = am.getConfiguration();
+
+            Loc loc = mLocales[position];
+            config.locale = loc.locale;
+
+            // indicate this isn't some passing default - the user wants this remembered
+            config.userSetLocale = true;
+
+            am.updateConfiguration(config);
+            // Trigger the dirty bit for the Settings Provider.
+            BackupManager.dataChanged("com.android.providers.settings");
+        } catch (RemoteException e) {
+            // Intentionally left blank
+        }
+
+        mActivity.finish();
     }
-}
+}
\ No newline at end of file