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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.inputmethod.compat;
     18 
     19 import android.view.inputmethod.EditorInfo;
     20 
     21 import java.lang.reflect.Field;
     22 import java.util.Locale;
     23 
     24 public final class EditorInfoCompatUtils {
     25     // Note that EditorInfo.IME_FLAG_FORCE_ASCII has been introduced
     26     // in API level 16 (Build.VERSION_CODES.JELLY_BEAN).
     27     private static final Field FIELD_IME_FLAG_FORCE_ASCII = CompatUtils.getField(
     28             EditorInfo.class, "IME_FLAG_FORCE_ASCII");
     29     private static final Integer OBJ_IME_FLAG_FORCE_ASCII = (Integer) CompatUtils.getFieldValue(
     30             null /* receiver */, null /* defaultValue */, FIELD_IME_FLAG_FORCE_ASCII);
     31     private static final Field FIELD_HINT_LOCALES = CompatUtils.getField(
     32             EditorInfo.class, "hintLocales");
     33 
     34     private EditorInfoCompatUtils() {
     35         // This utility class is not publicly instantiable.
     36     }
     37 
     38     public static boolean hasFlagForceAscii(final int imeOptions) {
     39         if (OBJ_IME_FLAG_FORCE_ASCII == null) return false;
     40         return (imeOptions & OBJ_IME_FLAG_FORCE_ASCII) != 0;
     41     }
     42 
     43     public static String imeActionName(final int imeOptions) {
     44         final int actionId = imeOptions & EditorInfo.IME_MASK_ACTION;
     45         switch (actionId) {
     46         case EditorInfo.IME_ACTION_UNSPECIFIED:
     47             return "actionUnspecified";
     48         case EditorInfo.IME_ACTION_NONE:
     49             return "actionNone";
     50         case EditorInfo.IME_ACTION_GO:
     51             return "actionGo";
     52         case EditorInfo.IME_ACTION_SEARCH:
     53             return "actionSearch";
     54         case EditorInfo.IME_ACTION_SEND:
     55             return "actionSend";
     56         case EditorInfo.IME_ACTION_NEXT:
     57             return "actionNext";
     58         case EditorInfo.IME_ACTION_DONE:
     59             return "actionDone";
     60         case EditorInfo.IME_ACTION_PREVIOUS:
     61             return "actionPrevious";
     62         default:
     63             return "actionUnknown(" + actionId + ")";
     64         }
     65     }
     66 
     67     public static String imeOptionsName(final int imeOptions) {
     68         final String action = imeActionName(imeOptions);
     69         final StringBuilder flags = new StringBuilder();
     70         if ((imeOptions & EditorInfo.IME_FLAG_NO_ENTER_ACTION) != 0) {
     71             flags.append("flagNoEnterAction|");
     72         }
     73         if ((imeOptions & EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0) {
     74             flags.append("flagNavigateNext|");
     75         }
     76         if ((imeOptions & EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS) != 0) {
     77             flags.append("flagNavigatePrevious|");
     78         }
     79         if (hasFlagForceAscii(imeOptions)) {
     80             flags.append("flagForceAscii|");
     81         }
     82         return (action != null) ? flags + action : flags.toString();
     83     }
     84 
     85     public static Locale getPrimaryHintLocale(final EditorInfo editorInfo) {
     86         if (editorInfo == null) {
     87             return null;
     88         }
     89         final Object localeList = CompatUtils.getFieldValue(editorInfo, null, FIELD_HINT_LOCALES);
     90         if (localeList == null) {
     91             return null;
     92         }
     93         if (LocaleListCompatUtils.isEmpty(localeList)) {
     94             return null;
     95         }
     96         return LocaleListCompatUtils.get(localeList, 0);
     97     }
     98 }
     99