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      1 /*
      2  * Copyright (C) 2017 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.documentsui.inspector.actions;
     18 
     19 import android.annotation.Nullable;
     20 import android.annotation.StringRes;
     21 import android.content.Context;
     22 import android.content.pm.ApplicationInfo;
     23 import android.content.pm.PackageManager;
     24 import android.content.pm.PackageManager.NameNotFoundException;
     25 import android.graphics.drawable.Drawable;
     26 
     27 import com.android.documentsui.base.DocumentInfo;
     28 
     29 /**
     30  * Abstract class for using ActionView with different actions.
     31  */
     32 public abstract class Action {
     33 
     34     public static final String APP_NAME_UNKNOWN = "unknown";
     35     public static final String APP_NOT_CHOSEN = "android";
     36 
     37     protected Context mContext;
     38     protected PackageManager mPm;
     39     protected DocumentInfo mDoc;
     40 
     41     public Action(Context context, PackageManager pm, DocumentInfo doc) {
     42         assert context != null;
     43         assert pm != null;
     44         assert doc != null;
     45         mContext = context;
     46         mPm = pm;
     47         mDoc = doc;
     48     }
     49 
     50     public abstract String getHeader();
     51 
     52     public abstract int getButtonIcon();
     53 
     54     public abstract boolean canPerformAction();
     55 
     56     public abstract @Nullable String getPackageName();
     57 
     58     public abstract @StringRes int getButtonLabel();
     59 
     60     public @Nullable Drawable getAppIcon() {
     61 
     62         String packageName = getPackageName();
     63         Drawable icon = null;
     64         if (packageName == null || APP_NOT_CHOSEN.equals(packageName)) {
     65             return null;
     66         }
     67 
     68         try {
     69             icon = mPm.getApplicationIcon(packageName);
     70         } catch(NameNotFoundException e) {
     71             icon = null;
     72         }
     73         return icon;
     74     }
     75 
     76     public String getAppName() {
     77 
     78         String packageName = getPackageName();
     79         if (packageName == null) {
     80             return APP_NAME_UNKNOWN;
     81         }
     82 
     83         ApplicationInfo appInfo = null;
     84         String appName = "";
     85 
     86         if (APP_NOT_CHOSEN.equals(packageName)) {
     87             return APP_NOT_CHOSEN;
     88         }
     89 
     90         try {
     91             appInfo = mPm.getApplicationInfo(packageName, 0);
     92             appName = (String) mPm.getApplicationLabel(appInfo);
     93         } catch (NameNotFoundException e) {
     94             appName = APP_NAME_UNKNOWN;
     95         }
     96         return appName;
     97     }
     98 }