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      1 /*
      2  * Copyright (C) 2008 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.launcher3;
     18 
     19 import android.content.ContentValues;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.content.res.XmlResourceParser;
     23 import android.database.sqlite.SQLiteDatabase;
     24 import android.util.Log;
     25 
     26 import com.android.launcher3.AutoInstallsLayout.LayoutParserCallback;
     27 import com.android.launcher3.LauncherSettings.Favorites;
     28 import com.android.launcher3.backup.BackupProtos.Favorite;
     29 import com.android.launcher3.util.Thunk;
     30 
     31 import org.xmlpull.v1.XmlPullParserException;
     32 
     33 import java.io.IOException;
     34 
     35 /**
     36  * A class that parses content values corresponding to some common app types.
     37  */
     38 public class CommonAppTypeParser implements LayoutParserCallback {
     39     private static final String TAG = "CommonAppTypeParser";
     40 
     41     // Including TARGET_NONE
     42     public static final int SUPPORTED_TYPE_COUNT = 7;
     43 
     44     private static final int RESTORE_FLAG_BIT_SHIFT = 4;
     45 
     46 
     47     private final long mItemId;
     48     @Thunk final int mResId;
     49     @Thunk final Context mContext;
     50 
     51     ContentValues parsedValues;
     52     Intent parsedIntent;
     53     String parsedTitle;
     54 
     55     public CommonAppTypeParser(long itemId, int itemType, Context context) {
     56         mItemId = itemId;
     57         mContext = context;
     58         mResId = getResourceForItemType(itemType);
     59     }
     60 
     61     @Override
     62     public long generateNewItemId() {
     63         return mItemId;
     64     }
     65 
     66     @Override
     67     public long insertAndCheck(SQLiteDatabase db, ContentValues values) {
     68         parsedValues = values;
     69 
     70         // Remove unwanted values
     71         values.put(Favorites.ICON_TYPE, (Integer) null);
     72         values.put(Favorites.ICON_PACKAGE, (String) null);
     73         values.put(Favorites.ICON_RESOURCE, (String) null);
     74         values.put(Favorites.ICON, (byte[]) null);
     75         return 1;
     76     }
     77 
     78     /**
     79      * Tries to find a suitable app to the provided app type.
     80      */
     81     public boolean findDefaultApp() {
     82         if (mResId == 0) {
     83             return false;
     84         }
     85 
     86         parsedIntent = null;
     87         parsedValues = null;
     88         new MyLayoutParser().parseValues();
     89         return (parsedValues != null) && (parsedIntent != null);
     90     }
     91 
     92     private class MyLayoutParser extends DefaultLayoutParser {
     93 
     94         public MyLayoutParser() {
     95             super(CommonAppTypeParser.this.mContext, null, CommonAppTypeParser.this,
     96                     CommonAppTypeParser.this.mContext.getResources(), mResId, TAG_RESOLVE, 0);
     97         }
     98 
     99         @Override
    100         protected long addShortcut(String title, Intent intent, int type) {
    101             if (type == Favorites.ITEM_TYPE_APPLICATION) {
    102                 parsedIntent = intent;
    103                 parsedTitle = title;
    104             }
    105             return super.addShortcut(title, intent, type);
    106         }
    107 
    108         public void parseValues() {
    109             XmlResourceParser parser = mSourceRes.getXml(mLayoutId);
    110             try {
    111                 beginDocument(parser, mRootTag);
    112                 new ResolveParser().parseAndAdd(parser);
    113             } catch (IOException | XmlPullParserException e) {
    114                 Log.e(TAG, "Unable to parse default app info", e);
    115             }
    116             parser.close();
    117         }
    118     }
    119 
    120     public static int getResourceForItemType(int type) {
    121         switch (type) {
    122             case Favorite.TARGET_PHONE:
    123                 return R.xml.app_target_phone;
    124 
    125             case Favorite.TARGET_MESSENGER:
    126                 return R.xml.app_target_messenger;
    127 
    128             case Favorite.TARGET_EMAIL:
    129                 return R.xml.app_target_email;
    130 
    131             case Favorite.TARGET_BROWSER:
    132                 return R.xml.app_target_browser;
    133 
    134             case Favorite.TARGET_GALLERY:
    135                 return R.xml.app_target_gallery;
    136 
    137             case Favorite.TARGET_CAMERA:
    138                 return R.xml.app_target_camera;
    139 
    140             default:
    141                 return 0;
    142         }
    143     }
    144 
    145     public static int encodeItemTypeToFlag(int itemType) {
    146         return itemType << RESTORE_FLAG_BIT_SHIFT;
    147     }
    148 
    149     public static int decodeItemTypeFromFlag(int flag) {
    150         return (flag & ShortcutInfo.FLAG_RESTORED_APP_TYPE) >> RESTORE_FLAG_BIT_SHIFT;
    151     }
    152 
    153 }
    154