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      1 /*
      2  * Copyright (C) 2016 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.qsb;
     18 
     19 import android.app.Activity;
     20 import android.app.Fragment;
     21 import android.app.SearchManager;
     22 import android.appwidget.AppWidgetHost;
     23 import android.appwidget.AppWidgetHostView;
     24 import android.appwidget.AppWidgetManager;
     25 import android.appwidget.AppWidgetProviderInfo;
     26 import android.content.ComponentName;
     27 import android.content.Context;
     28 import android.content.Intent;
     29 import android.graphics.Rect;
     30 import android.os.Bundle;
     31 import android.util.AttributeSet;
     32 import android.view.LayoutInflater;
     33 import android.view.View;
     34 import android.view.ViewGroup;
     35 import android.widget.FrameLayout;
     36 
     37 import com.android.launcher3.AppWidgetResizeFrame;
     38 import com.android.launcher3.InvariantDeviceProfile;
     39 import com.android.launcher3.LauncherAppState;
     40 import com.android.launcher3.R;
     41 import com.android.launcher3.Utilities;
     42 import com.android.launcher3.config.FeatureFlags;
     43 
     44 /**
     45  * A frame layout which contains a QSB. This internally uses fragment to bind the view, which
     46  * allows it to contain the logic for {@link Fragment#startActivityForResult(Intent, int)}.
     47  *
     48  * Note: AppWidgetManagerCompat can be disabled using FeatureFlags. In QSB, we should use
     49  * AppWidgetManager directly, so that it keeps working in that case.
     50  */
     51 public class QsbContainerView extends FrameLayout {
     52 
     53     public QsbContainerView(Context context) {
     54         super(context);
     55     }
     56 
     57     public QsbContainerView(Context context, AttributeSet attrs) {
     58         super(context, attrs);
     59     }
     60 
     61     public QsbContainerView(Context context, AttributeSet attrs, int defStyleAttr) {
     62         super(context, attrs, defStyleAttr);
     63     }
     64 
     65     @Override
     66     public void setPadding(int left, int top, int right, int bottom) {
     67         super.setPadding(0, 0, 0, 0);
     68     }
     69 
     70     protected void setPaddingUnchecked(int left, int top, int right, int bottom) {
     71         super.setPadding(left, top, right, bottom);
     72     }
     73 
     74     /**
     75      * A fragment to display the QSB.
     76      */
     77     public static class QsbFragment extends Fragment implements View.OnClickListener {
     78 
     79         private static final int REQUEST_BIND_QSB = 1;
     80         private static final String QSB_WIDGET_ID = "qsb_widget_id";
     81 
     82         private QsbWidgetHost mQsbWidgetHost;
     83         private AppWidgetProviderInfo mWidgetInfo;
     84         private QsbWidgetHostView mQsb;
     85 
     86         // We need to store the orientation here, due to a bug (b/64916689) that results in widgets
     87         // being inflated in the wrong orientation.
     88         private int mOrientation;
     89 
     90         @Override
     91         public void onCreate(Bundle savedInstanceState) {
     92             super.onCreate(savedInstanceState);
     93             mQsbWidgetHost = new QsbWidgetHost(getActivity());
     94             mOrientation = getContext().getResources().getConfiguration().orientation;
     95         }
     96 
     97         private FrameLayout mWrapper;
     98 
     99         @Override
    100         public View onCreateView(
    101                 LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    102 
    103             mWrapper = new FrameLayout(getActivity());
    104 
    105             // Only add the view when enabled
    106             if (isQsbEnabled()) {
    107                 mWrapper.addView(createQsb(mWrapper));
    108             }
    109             return mWrapper;
    110         }
    111 
    112         private View createQsb(ViewGroup container) {
    113             Activity activity = getActivity();
    114             mWidgetInfo = getSearchWidgetProvider(activity);
    115             if (mWidgetInfo == null) {
    116                 // There is no search provider, just show the default widget.
    117                 return QsbWidgetHostView.getDefaultView(container);
    118             }
    119 
    120             AppWidgetManager widgetManager = AppWidgetManager.getInstance(activity);
    121             InvariantDeviceProfile idp = LauncherAppState.getIDP(activity);
    122 
    123             Bundle opts = new Bundle();
    124             Rect size = AppWidgetResizeFrame.getWidgetSizeRanges(activity, idp.numColumns, 1, null);
    125             opts.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH, size.left);
    126             opts.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT, size.top);
    127             opts.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH, size.right);
    128             opts.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT, size.bottom);
    129 
    130             int widgetId = Utilities.getPrefs(activity).getInt(QSB_WIDGET_ID, -1);
    131             AppWidgetProviderInfo widgetInfo = widgetManager.getAppWidgetInfo(widgetId);
    132             boolean isWidgetBound = (widgetInfo != null) &&
    133                     widgetInfo.provider.equals(mWidgetInfo.provider);
    134 
    135             int oldWidgetId = widgetId;
    136             if (!isWidgetBound) {
    137                 if (widgetId > -1) {
    138                     // widgetId is already bound and its not the correct provider. reset host.
    139                     mQsbWidgetHost.deleteHost();
    140                 }
    141 
    142                 widgetId = mQsbWidgetHost.allocateAppWidgetId();
    143                 isWidgetBound = widgetManager.bindAppWidgetIdIfAllowed(
    144                         widgetId, mWidgetInfo.getProfile(), mWidgetInfo.provider, opts);
    145                 if (!isWidgetBound) {
    146                     mQsbWidgetHost.deleteAppWidgetId(widgetId);
    147                     widgetId = -1;
    148                 }
    149 
    150                 if (oldWidgetId != widgetId) {
    151                     saveWidgetId(widgetId);
    152                 }
    153             }
    154 
    155             if (isWidgetBound) {
    156                 mQsb = (QsbWidgetHostView) mQsbWidgetHost.createView(activity, widgetId, mWidgetInfo);
    157                 mQsb.setId(R.id.qsb_widget);
    158 
    159                 if (!Utilities.containsAll(AppWidgetManager.getInstance(activity)
    160                         .getAppWidgetOptions(widgetId), opts)) {
    161                     mQsb.updateAppWidgetOptions(opts);
    162                 }
    163                 mQsb.setPadding(0, 0, 0, 0);
    164                 mQsbWidgetHost.startListening();
    165                 return mQsb;
    166             }
    167 
    168             // Return a default widget with setup icon.
    169             View v = QsbWidgetHostView.getDefaultView(container);
    170             View setupButton = v.findViewById(R.id.btn_qsb_setup);
    171             setupButton.setVisibility(View.VISIBLE);
    172             setupButton.setOnClickListener(this);
    173             return v;
    174         }
    175 
    176         private void saveWidgetId(int widgetId) {
    177             Utilities.getPrefs(getActivity()).edit().putInt(QSB_WIDGET_ID, widgetId).apply();
    178         }
    179 
    180         @Override
    181         public void onClick(View view) {
    182             // Start intent for bind the widget
    183             Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_BIND);
    184             // Allocate a new widget id for QSB
    185             intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mQsbWidgetHost.allocateAppWidgetId());
    186             intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_PROVIDER, mWidgetInfo.provider);
    187             startActivityForResult(intent, REQUEST_BIND_QSB);
    188         }
    189 
    190         @Override
    191         public void onActivityResult(int requestCode, int resultCode, Intent data) {
    192             if (requestCode == REQUEST_BIND_QSB) {
    193                 if (resultCode == Activity.RESULT_OK) {
    194                     saveWidgetId(data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1));
    195                     rebindFragment();
    196                 } else {
    197                     mQsbWidgetHost.deleteHost();
    198                 }
    199             }
    200         }
    201 
    202         @Override
    203         public void onResume() {
    204             super.onResume();
    205             if (mQsb != null && mQsb.isReinflateRequired(mOrientation)) {
    206                 rebindFragment();
    207             }
    208         }
    209 
    210         @Override
    211         public void onDestroy() {
    212             mQsbWidgetHost.stopListening();
    213             super.onDestroy();
    214         }
    215 
    216         private void rebindFragment() {
    217             // Exit if the embedded qsb is disabled
    218             if (!isQsbEnabled()) {
    219                 return;
    220             }
    221 
    222             if (mWrapper != null && getActivity() != null) {
    223                 mWrapper.removeAllViews();
    224                 mWrapper.addView(createQsb(mWrapper));
    225             }
    226         }
    227 
    228         public boolean isQsbEnabled() {
    229             return FeatureFlags.QSB_ON_FIRST_SCREEN;
    230         }
    231     }
    232 
    233     /**
    234      * Returns a widget with category {@link AppWidgetProviderInfo#WIDGET_CATEGORY_SEARCHBOX}
    235      * provided by the same package which is set to be global search activity.
    236      * If widgetCategory is not supported, or no such widget is found, returns the first widget
    237      * provided by the package.
    238      */
    239     public static AppWidgetProviderInfo getSearchWidgetProvider(Context context) {
    240         SearchManager searchManager =
    241                 (SearchManager) context.getSystemService(Context.SEARCH_SERVICE);
    242         ComponentName searchComponent = searchManager.getGlobalSearchActivity();
    243         if (searchComponent == null) return null;
    244         String providerPkg = searchComponent.getPackageName();
    245 
    246         AppWidgetProviderInfo defaultWidgetForSearchPackage = null;
    247 
    248         AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
    249         for (AppWidgetProviderInfo info : appWidgetManager.getInstalledProviders()) {
    250             if (info.provider.getPackageName().equals(providerPkg) && info.configure == null) {
    251                 if ((info.widgetCategory & AppWidgetProviderInfo.WIDGET_CATEGORY_SEARCHBOX) != 0) {
    252                     return info;
    253                 } else if (defaultWidgetForSearchPackage == null) {
    254                     defaultWidgetForSearchPackage = info;
    255                 }
    256             }
    257         }
    258         return defaultWidgetForSearchPackage;
    259     }
    260 
    261     private static class QsbWidgetHost extends AppWidgetHost {
    262 
    263         private static final int QSB_WIDGET_HOST_ID = 1026;
    264 
    265         public QsbWidgetHost(Context context) {
    266             super(context, QSB_WIDGET_HOST_ID);
    267         }
    268 
    269         @Override
    270         protected AppWidgetHostView onCreateView(
    271                 Context context, int appWidgetId, AppWidgetProviderInfo appWidget) {
    272             return new QsbWidgetHostView(context);
    273         }
    274     }
    275 }
    276