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      1 /*
      2  * Copyright (C) 2015 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.settings.applications;
     18 
     19 import android.appwidget.AppWidgetManager;
     20 import android.content.Context;
     21 import android.content.pm.PackageManager;
     22 import android.hardware.usb.IUsbManager;
     23 import android.os.IBinder;
     24 import android.os.RemoteException;
     25 import android.os.ServiceManager;
     26 import android.os.UserHandle;
     27 import android.support.v7.preference.Preference;
     28 import android.support.v7.preference.PreferenceViewHolder;
     29 import android.text.SpannableString;
     30 import android.text.TextUtils;
     31 import android.text.style.BulletSpan;
     32 import android.util.AttributeSet;
     33 import android.util.Log;
     34 import android.view.View;
     35 import android.widget.Button;
     36 import android.widget.TextView;
     37 
     38 import com.android.settings.R;
     39 import com.android.settingslib.applications.AppUtils;
     40 import com.android.settingslib.applications.ApplicationsState;
     41 
     42 public class ClearDefaultsPreference extends Preference {
     43 
     44     protected static final String TAG = ClearDefaultsPreference.class.getSimpleName();
     45 
     46     private Button mActivitiesButton;
     47 
     48     private AppWidgetManager mAppWidgetManager;
     49     private IUsbManager mUsbManager;
     50     private PackageManager mPm;
     51     private String mPackageName;
     52     protected ApplicationsState.AppEntry mAppEntry;
     53 
     54     public ClearDefaultsPreference(Context context, AttributeSet attrs, int defStyleAttr,
     55             int defStyleRes) {
     56         super(context, attrs, defStyleAttr, defStyleRes);
     57 
     58         setLayoutResource(R.layout.app_preferred_settings);
     59 
     60         mAppWidgetManager = AppWidgetManager.getInstance(context);
     61         mPm = context.getPackageManager();
     62         IBinder b = ServiceManager.getService(Context.USB_SERVICE);
     63         mUsbManager = IUsbManager.Stub.asInterface(b);
     64     }
     65 
     66     public ClearDefaultsPreference(Context context, AttributeSet attrs, int defStyleAttr) {
     67         this(context, attrs, defStyleAttr, 0);
     68     }
     69 
     70     public ClearDefaultsPreference(Context context, AttributeSet attrs) {
     71         this(context, attrs, 0);
     72     }
     73 
     74     public ClearDefaultsPreference(Context context) {
     75         this(context, null);
     76     }
     77 
     78     public void setPackageName(String packageName) {
     79         mPackageName = packageName;
     80     }
     81 
     82     public void setAppEntry(ApplicationsState.AppEntry entry) {
     83         mAppEntry = entry;
     84     }
     85 
     86     @Override
     87     public void onBindViewHolder(final PreferenceViewHolder view) {
     88         super.onBindViewHolder(view);
     89 
     90         mActivitiesButton = (Button) view.findViewById(R.id.clear_activities_button);
     91         mActivitiesButton.setOnClickListener(new View.OnClickListener() {
     92             @Override
     93             public void onClick(View v) {
     94                 if (mUsbManager != null) {
     95                     final int userId = UserHandle.myUserId();
     96                     mPm.clearPackagePreferredActivities(mPackageName);
     97                     if (isDefaultBrowser(mPackageName)) {
     98                         mPm.setDefaultBrowserPackageNameAsUser(null, userId);
     99                     }
    100                     try {
    101                         mUsbManager.clearDefaults(mPackageName, userId);
    102                     } catch (RemoteException e) {
    103                         Log.e(TAG, "mUsbManager.clearDefaults", e);
    104                     }
    105                     mAppWidgetManager.setBindAppWidgetPermission(mPackageName, false);
    106                     TextView autoLaunchView = (TextView) view.findViewById(R.id.auto_launch);
    107                     resetLaunchDefaultsUi(autoLaunchView);
    108                 }
    109             }
    110         });
    111 
    112         updateUI(view);
    113     }
    114 
    115     public boolean updateUI(PreferenceViewHolder view) {
    116         boolean hasBindAppWidgetPermission =
    117                 mAppWidgetManager.hasBindAppWidgetPermission(mAppEntry.info.packageName);
    118 
    119         TextView autoLaunchView = (TextView) view.findViewById(R.id.auto_launch);
    120         boolean autoLaunchEnabled = AppUtils.hasPreferredActivities(mPm, mPackageName)
    121                 || isDefaultBrowser(mPackageName)
    122                 || AppUtils.hasUsbDefaults(mUsbManager, mPackageName);
    123         if (!autoLaunchEnabled && !hasBindAppWidgetPermission) {
    124             resetLaunchDefaultsUi(autoLaunchView);
    125         } else {
    126             boolean useBullets = hasBindAppWidgetPermission && autoLaunchEnabled;
    127 
    128             if (hasBindAppWidgetPermission) {
    129                 autoLaunchView.setText(R.string.auto_launch_label_generic);
    130             } else {
    131                 autoLaunchView.setText(R.string.auto_launch_label);
    132             }
    133 
    134             Context context = getContext();
    135             CharSequence text = null;
    136             int bulletIndent = context.getResources().getDimensionPixelSize(
    137                     R.dimen.installed_app_details_bullet_offset);
    138             if (autoLaunchEnabled) {
    139                 CharSequence autoLaunchEnableText = context.getText(
    140                         R.string.auto_launch_enable_text);
    141                 SpannableString s = new SpannableString(autoLaunchEnableText);
    142                 if (useBullets) {
    143                     s.setSpan(new BulletSpan(bulletIndent), 0, autoLaunchEnableText.length(), 0);
    144                 }
    145                 text = (text == null) ?
    146                         TextUtils.concat(s, "\n") : TextUtils.concat(text, "\n", s, "\n");
    147             }
    148             if (hasBindAppWidgetPermission) {
    149                 CharSequence alwaysAllowBindAppWidgetsText =
    150                         context.getText(R.string.always_allow_bind_appwidgets_text);
    151                 SpannableString s = new SpannableString(alwaysAllowBindAppWidgetsText);
    152                 if (useBullets) {
    153                     s.setSpan(new BulletSpan(bulletIndent),
    154                             0, alwaysAllowBindAppWidgetsText.length(), 0);
    155                 }
    156                 text = (text == null) ?
    157                         TextUtils.concat(s, "\n") : TextUtils.concat(text, "\n", s, "\n");
    158             }
    159             autoLaunchView.setText(text);
    160             mActivitiesButton.setEnabled(true);
    161         }
    162         return true;
    163     }
    164 
    165     private boolean isDefaultBrowser(String packageName) {
    166         final String defaultBrowser = mPm.getDefaultBrowserPackageNameAsUser(UserHandle.myUserId());
    167         return packageName.equals(defaultBrowser);
    168     }
    169 
    170     private void resetLaunchDefaultsUi(TextView autoLaunchView) {
    171         autoLaunchView.setText(R.string.auto_launch_disable_text);
    172         // Disable clear activities button
    173         mActivitiesButton.setEnabled(false);
    174     }
    175 }
    176