content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.android.launcher3.qsb;
  
  import android.app.Activity;
  import android.app.Fragment;
  import android.app.SearchManager;
  import android.appwidget.AppWidgetHost;
  import android.appwidget.AppWidgetHostView;
  import android.appwidget.AppWidgetManager;
  import android.appwidget.AppWidgetProviderInfo;
  import android.content.ComponentName;
  import android.content.Context;
  import android.content.Intent;
  import android.graphics.Rect;
  import android.os.Bundle;
  import android.util.AttributeSet;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.FrameLayout;
  
  import com.android.launcher3.AppWidgetResizeFrame;
  import com.android.launcher3.InvariantDeviceProfile;
  import com.android.launcher3.Launcher;
  import com.android.launcher3.LauncherAppState;
  import com.android.launcher3.R;
  import com.android.launcher3.Utilities;
  import com.android.launcher3.config.FeatureFlags;
  
  /**
   * A frame layout which contains a QSB. This internally uses fragment to bind the view, which
   * allows it to contain the logic for {@link Fragment#startActivityForResult(Intent, int)}.
   *
   * Note: AppWidgetManagerCompat can be disabled using FeatureFlags. In QSB, we should use
   * AppWidgetManager directly, so that it keeps working in that case.
   */
  public class QsbContainerView extends FrameLayout {
  
      public QsbContainerView(Context context) {
          super(context);
      }
  
      public QsbContainerView(Context context, AttributeSet attrs) {
          super(context, attrs);
      }
  
      public QsbContainerView(Context context, AttributeSet attrs, int defStyleAttr) {
          super(context, attrs, defStyleAttr);
      }
  
      @Override
      public void setPadding(int left, int top, int right, int bottom) {
          super.setPadding(0, 0, 0, 0);
      }
  
      /**
       * A fragment to display the QSB.
       */
      public static class QsbFragment extends Fragment implements View.OnClickListener {
  
          private static final int REQUEST_BIND_QSB = 1;
          private static final String QSB_WIDGET_ID = "qsb_widget_id";
  
          private QsbWidgetHost mQsbWidgetHost;
          private AppWidgetProviderInfo mWidgetInfo;
          private QsbWidgetHostView mQsb;
  
          // We need to store the orientation here, due to a bug (b/64916689) that results in widgets
          // being inflated in the wrong orientation.
          private int mOrientation;
  
          @Override
          public void onCreate(Bundle savedInstanceState) {
              super.onCreate(savedInstanceState);
              mQsbWidgetHost = new QsbWidgetHost(getActivity());
              mOrientation = getContext().getResources().getConfiguration().orientation;
          }
  
          private FrameLayout mWrapper;
  
          @Override
          public View onCreateView(
                  LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
  
              mWrapper = new FrameLayout(getActivity());
  
              // Only add the view when enabled
              if (FeatureFlags.QSB_ON_FIRST_SCREEN) {
                  mWrapper.addView(createQsb(mWrapper));
              }
              return mWrapper;
          }
  
          private View createQsb(ViewGroup container) {
              Activity activity = getActivity();
              mWidgetInfo = getSearchWidgetProvider(activity);
              if (mWidgetInfo == null) {
                  // There is no search provider, just show the default widget.
                  return QsbWidgetHostView.getDefaultView(container);
              }
  
              AppWidgetManager widgetManager = AppWidgetManager.getInstance(activity);
              InvariantDeviceProfile idp = LauncherAppState.getIDP(activity);
  
              Bundle opts = new Bundle();
              Rect size = AppWidgetResizeFrame.getWidgetSizeRanges(activity, idp.numColumns, 1, null);
              opts.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH, size.left);
              opts.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT, size.top);
              opts.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH, size.right);
              opts.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT, size.bottom);
  
              int widgetId = Utilities.getPrefs(activity).getInt(QSB_WIDGET_ID, -1);
              AppWidgetProviderInfo widgetInfo = widgetManager.getAppWidgetInfo(widgetId);
              boolean isWidgetBound = (widgetInfo != null) &&
                      widgetInfo.provider.equals(mWidgetInfo.provider);
  
              int oldWidgetId = widgetId;
              if (!isWidgetBound) {
                  if (widgetId > -1) {
                      // widgetId is already bound and its not the correct provider. reset host.
                      mQsbWidgetHost.deleteHost();
                  }
  
                  widgetId = mQsbWidgetHost.allocateAppWidgetId();
                  isWidgetBound = widgetManager.bindAppWidgetIdIfAllowed(
                          widgetId, mWidgetInfo.getProfile(), mWidgetInfo.provider, opts);
                  if (!isWidgetBound) {
                      mQsbWidgetHost.deleteAppWidgetId(widgetId);
                      widgetId = -1;
                  }
  
                  if (oldWidgetId != widgetId) {
                      saveWidgetId(widgetId);
                  }
              }
  
              if (isWidgetBound) {
                  mQsb = (QsbWidgetHostView) mQsbWidgetHost.createView(activity, widgetId, mWidgetInfo);
                  mQsb.setId(R.id.qsb_widget);
  
                  if (!Utilities.containsAll(AppWidgetManager.getInstance(activity)
                          .getAppWidgetOptions(widgetId), opts)) {
                      mQsb.updateAppWidgetOptions(opts);
                  }
                  mQsb.setPadding(0, 0, 0, 0);
                  mQsbWidgetHost.startListening();
                  return mQsb;
              }
  
              // Return a default widget with setup icon.
              View v = QsbWidgetHostView.getDefaultView(container);
              View setupButton = v.findViewById(R.id.btn_qsb_setup);
              setupButton.setVisibility(View.VISIBLE);
              setupButton.setOnClickListener(this);
              return v;
          }
  
          private void saveWidgetId(int widgetId) {
              Utilities.getPrefs(getActivity()).edit().putInt(QSB_WIDGET_ID, widgetId).apply();
          }
  
          @Override
          public void onClick(View view) {
              // Start intent for bind the widget
              Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_BIND);
              // Allocate a new widget id for QSB
              intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mQsbWidgetHost.allocateAppWidgetId());
              intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_PROVIDER, mWidgetInfo.provider);
              startActivityForResult(intent, REQUEST_BIND_QSB);
          }
  
          @Override
          public void onActivityResult(int requestCode, int resultCode, Intent data) {
              if (requestCode == REQUEST_BIND_QSB) {
                  if (resultCode == Activity.RESULT_OK) {
                      saveWidgetId(data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1));
                      rebindFragment();
                  } else {
                      mQsbWidgetHost.deleteHost();
                  }
              }
          }
  
          @Override
          public void onResume() {
              super.onResume();
              if (mQsb != null && mQsb.isReinflateRequired(mOrientation)) {
                  rebindFragment();
              }
          }
  
          @Override
          public void onDestroy() {
              mQsbWidgetHost.stopListening();
              super.onDestroy();
          }
  
          private void rebindFragment() {
              // Exit if the embedded qsb is disabled
              if (!FeatureFlags.QSB_ON_FIRST_SCREEN) {
                  return;
              }
  
              if (mWrapper != null && getActivity() != null) {
                  mWrapper.removeAllViews();
                  mWrapper.addView(createQsb(mWrapper));
              }
          }
      }
  
      /**
       * Returns a widget with category {@link AppWidgetProviderInfo#WIDGET_CATEGORY_SEARCHBOX}
       * provided by the same package which is set to be global search activity.
       * If widgetCategory is not supported, or no such widget is found, returns the first widget
       * provided by the package.
       */
      public static AppWidgetProviderInfo getSearchWidgetProvider(Context context) {
          SearchManager searchManager =
                  (SearchManager) context.getSystemService(Context.SEARCH_SERVICE);
          ComponentName searchComponent = searchManager.getGlobalSearchActivity();
          if (searchComponent == null) return null;
          String providerPkg = searchComponent.getPackageName();
  
          AppWidgetProviderInfo defaultWidgetForSearchPackage = null;
  
          AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
          for (AppWidgetProviderInfo info : appWidgetManager.getInstalledProviders()) {
              if (info.provider.getPackageName().equals(providerPkg) && info.configure == null) {
                  if ((info.widgetCategory & AppWidgetProviderInfo.WIDGET_CATEGORY_SEARCHBOX) != 0) {
                      return info;
                  } else if (defaultWidgetForSearchPackage == null) {
                      defaultWidgetForSearchPackage = info;
                  }
              }
          }
          return defaultWidgetForSearchPackage;
      }
  
      private static class QsbWidgetHost extends AppWidgetHost {
  
          private static final int QSB_WIDGET_HOST_ID = 1026;
  
          public QsbWidgetHost(Context context) {
              super(context, QSB_WIDGET_HOST_ID);
          }
  
          @Override
          protected AppWidgetHostView onCreateView(
                  Context context, int appWidgetId, AppWidgetProviderInfo appWidget) {
              return new QsbWidgetHostView(context);
          }
      }
  }
  