Merge change I8c9748c8 into eclair-mr2

* changes:
  Input language switching. Bug: 2331173

1 files changed, 178 insertions, 0 deletions

diff --git a/src/com/android/inputmethod/latin/InputLanguageSelection.java b/src/com/android/inputmethod/latin/InputLanguageSelection.java
new file mode 100644
index 000000000..5bd1391c3
--- /dev/null
+++ b/src/com/android/inputmethod/latin/InputLanguageSelection.java
@@ -0,0 +1,178 @@
+/*
+ * Copyright (C) 2008-2009 Google Inc.
+ * 
+ * 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 com.android.inputmethod.latin;
+
+import java.text.Collator;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Locale;
+
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.Editor;
+import android.os.Bundle;
+import android.preference.CheckBoxPreference;
+import android.preference.PreferenceActivity;
+import android.preference.PreferenceGroup;
+import android.preference.PreferenceManager;
+import android.util.Log;
+
+public class InputLanguageSelection extends PreferenceActivity {
+
+    private String mSelectedLanguages;
+    private ArrayList<Loc> mAvailableLanguages = new ArrayList<Loc>();
+
+    private static class Loc implements Comparable {
+        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;
+        }
+
+        public int compareTo(Object o) {
+            return sCollator.compare(this.label, ((Loc) o).label);
+        }
+    }
+
+    @Override
+    protected void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        addPreferencesFromResource(R.xml.language_prefs);
+        // Get the settings preferences
+        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
+        mSelectedLanguages = sp.getString(LatinIME.PREF_SELECTED_LANGUAGES, "");
+        String[] languageList = mSelectedLanguages.split(",");
+        mAvailableLanguages = getUniqueLocales();
+        PreferenceGroup parent = getPreferenceScreen();
+        for (int i = 0; i < mAvailableLanguages.size(); i++) {
+            CheckBoxPreference pref = new CheckBoxPreference(this);
+            Locale locale = mAvailableLanguages.get(i).locale;
+            pref.setTitle(locale.getDisplayName(locale));
+            boolean checked = isLocaleIn(locale, languageList);
+            pref.setChecked(checked);
+            parent.addPreference(pref);
+        }
+    }
+
+    private boolean isLocaleIn(Locale locale, String[] list) {
+        String lang = get5Code(locale);
+        for (int i = 0; i < list.length; i++) {
+            if (lang.equalsIgnoreCase(list[i])) return true;
+        }
+        // If it matches the current locale
+        Locale displayLocale = getResources().getConfiguration().locale;
+        if (lang.equalsIgnoreCase(get5Code(displayLocale))) {
+            return true;
+        }
+        return false;
+    }
+
+    private String get5Code(Locale locale) {
+        return locale.getLanguage() + "_" + locale.getCountry();
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        // Save the selected languages
+        String checkedLanguages = "";
+        PreferenceGroup parent = getPreferenceScreen();
+        int count = parent.getPreferenceCount();
+        for (int i = 0; i < count; i++) {
+            CheckBoxPreference pref = (CheckBoxPreference) parent.getPreference(i);
+            if (pref.isChecked()) {
+                Locale locale = mAvailableLanguages.get(i).locale;
+                checkedLanguages += get5Code(locale) + ",";
+            }
+        }
+        if (checkedLanguages.length() < 1) checkedLanguages = null; // Save null
+        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
+        Editor editor = sp.edit();
+        editor.putString(LatinIME.PREF_SELECTED_LANGUAGES, checkedLanguages);
+        editor.commit();
+    }
+
+    ArrayList<Loc> getUniqueLocales() {
+        String[] locales = getAssets().getLocales();
+        Arrays.sort(locales);
+        ArrayList<Loc> uniqueLocales = new ArrayList<Loc>();
+
+        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) {
+                    preprocess[finalSize++] =
+                            new Loc(toTitleCase(l.getDisplayName(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)) {
+                        preprocess[finalSize-1].label = toTitleCase(
+                                preprocess[finalSize-1].locale.getDisplayName());
+                        preprocess[finalSize++] =
+                                new Loc(toTitleCase(l.getDisplayName()), l);
+                    } else {
+                        String displayName;
+                        if (s.equals("zz_ZZ")) {
+                        } else {
+                            displayName = toTitleCase(l.getDisplayName(l));
+                            preprocess[finalSize++] = new Loc(displayName, l);
+                        }
+                    }
+                }
+            }
+        }
+        for (int i = 0; i < finalSize ; i++) {
+            uniqueLocales.add(preprocess[i]);
+        }
+        return uniqueLocales;
+    }
+
+    private static String toTitleCase(String s) {
+        if (s.length() == 0) {
+            return s;
+        }
+
+        return Character.toUpperCase(s.charAt(0)) + s.substring(1);
+    }
+
+}