src/com/android/launcher3/QsbContainerView.java - platform/packages/apps/Launcher3 - Git at Google

 /*
  * 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;

 import android.app.Activity;
 import android.app.Fragment;
 import android.app.SearchManager;
 import android.appwidget.AppWidgetManager;
 import android.appwidget.AppWidgetProviderInfo;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.SharedPreferences;
 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.compat.AppWidgetManagerCompat;

 /**
  * 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)}.
  */
 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 static int sSavedWidgetId = -1;

         private AppWidgetProviderInfo mWidgetInfo;
         private LauncherAppWidgetHostView mQsb;

         private BroadcastReceiver mRebindReceiver = new BroadcastReceiver() {
             @Override
             public void onReceive(Context context, Intent intent) {
                 rebindFragment();
             }
         };

         @Override
         public void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);

             IntentFilter filter = new IntentFilter(Launcher.ACTION_APPWIDGET_HOST_RESET);
             filter.addAction(SearchManager.INTENT_GLOBAL_SEARCH_ACTIVITY_CHANGED);
             getActivity().registerReceiver(mRebindReceiver, filter);
         }

         private FrameLayout mWrapper;

         @Override
         public View onCreateView(
                 LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

             if (savedInstanceState != null) {
                 sSavedWidgetId = savedInstanceState.getInt(QSB_WIDGET_ID, -1);
             }
             mWrapper = new FrameLayout(getActivity());
             mWrapper.addView(createQsb(inflater, mWrapper));
             return mWrapper;
         }

         private View createQsb(LayoutInflater inflater, ViewGroup container) {
             Launcher launcher = (Launcher) getActivity();
             mWidgetInfo = getSearchWidgetProvider(launcher);
             if (mWidgetInfo == null) {
                 // There is no search provider, just show the default widget.
                 return getDefaultView(inflater, container, false);
             }

             SharedPreferences prefs = Utilities.getPrefs(launcher);
             AppWidgetManagerCompat widgetManager = AppWidgetManagerCompat.getInstance(launcher);
             LauncherAppWidgetHost widgetHost = launcher.getAppWidgetHost();
             InvariantDeviceProfile idp = LauncherAppState.getInstance().getInvariantDeviceProfile();

             Bundle opts = new Bundle();
             Rect size = AppWidgetResizeFrame.getWidgetSizeRanges(launcher, 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 = prefs.getInt(QSB_WIDGET_ID, -1);
             AppWidgetProviderInfo widgetInfo = widgetManager.getAppWidgetInfo(widgetId);
             boolean isWidgetBound = (widgetInfo != null) &&
                     widgetInfo.provider.equals(mWidgetInfo.provider);

             if (!isWidgetBound) {
                 // widgetId is already bound and its not the correct provider.
                 // Delete the widget id.
                 if (widgetId > -1) {
                     widgetHost.deleteAppWidgetId(widgetId);
                     widgetId = -1;
                 }

                 widgetId = widgetHost.allocateAppWidgetId();
                 isWidgetBound = widgetManager.bindAppWidgetIdIfAllowed(widgetId, mWidgetInfo, opts);
                 if (!isWidgetBound) {
                     widgetHost.deleteAppWidgetId(widgetId);
                     widgetId = -1;
                 }
             }

             if (isWidgetBound) {
                 mQsb = (LauncherAppWidgetHostView)
                         widgetHost.createView(launcher, widgetId, mWidgetInfo);
                 mQsb.setId(R.id.qsb_widget);
                 mQsb.mErrorViewId = R.layout.qsb_default_view;

                 if (!Utilities.containsAll(AppWidgetManager.getInstance(launcher)
                         .getAppWidgetOptions(widgetId), opts)) {
                     mQsb.updateAppWidgetOptions(opts);
                 }
                 mQsb.setPadding(0, 0, 0, 0);
                 return mQsb;
             }

             // Return a default widget with setup icon.
             return getDefaultView(inflater, container, true);
         }

         @Override
         public void onClick(View view) {
             if (view.getId() == R.id.btn_qsb_search) {
                 getActivity().startSearch("", false, null, true);
             } else if (view.getId() == R.id.btn_qsb_setup) {
                 // Allocate a new widget id for QSB
                 sSavedWidgetId = ((Launcher) getActivity())
                         .getAppWidgetHost().allocateAppWidgetId();
                 // Start intent for bind the widget
                 Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_BIND);
                 intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, sSavedWidgetId);
                 intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_PROVIDER, mWidgetInfo.provider);
                 startActivityForResult(intent, REQUEST_BIND_QSB);
             }
         }

         @Override
         public void onSaveInstanceState(Bundle outState) {
             super.onSaveInstanceState(outState);
             outState.putInt(QSB_WIDGET_ID, sSavedWidgetId);
         }

         @Override
         public void onActivityResult(int requestCode, int resultCode, Intent data) {
             if (requestCode == REQUEST_BIND_QSB) {
                 if (resultCode == Activity.RESULT_OK) {
                     int widgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
                             sSavedWidgetId);
                     Utilities.getPrefs(getActivity()).edit().putInt(QSB_WIDGET_ID, widgetId).apply();
                     sSavedWidgetId = -1;
                     rebindFragment();
                 } else if (sSavedWidgetId != -1) {
                     ((Launcher) getActivity()).getAppWidgetHost().deleteAppWidgetId(sSavedWidgetId);
                     sSavedWidgetId = -1;
                 }
             }
         }

         @Override
         public void onResume() {
             super.onResume();
             if (mQsb != null && mQsb.isReinflateRequired()) {
                 rebindFragment();
             }
         }

         @Override
         public void onDestroy() {
             getActivity().unregisterReceiver(mRebindReceiver);
             super.onDestroy();
         }

         private void rebindFragment() {
             if (mWrapper != null && getActivity() != null) {
                 mWrapper.removeAllViews();
                 mWrapper.addView(createQsb(getActivity().getLayoutInflater(), mWrapper));
             }
         }

         private View getDefaultView(LayoutInflater inflater, ViewGroup parent, boolean showSetup) {
             View v = inflater.inflate(R.layout.qsb_default_view, parent, false);
             if (showSetup) {
                 View setupButton = v.findViewById(R.id.btn_qsb_setup);
                 setupButton.setVisibility(View.VISIBLE);
                 setupButton.setOnClickListener(this);
             }
             v.findViewById(R.id.btn_qsb_search).setOnClickListener(this);
             return v;
         }
     }

     /**
      * 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;
     }
 }
	/*
	* 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;

	import android.app.Activity;
	import android.app.Fragment;
	import android.app.SearchManager;
	import android.appwidget.AppWidgetManager;
	import android.appwidget.AppWidgetProviderInfo;
	import android.content.BroadcastReceiver;
	import android.content.ComponentName;
	import android.content.Context;
	import android.content.Intent;
	import android.content.IntentFilter;
	import android.content.SharedPreferences;
	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.compat.AppWidgetManagerCompat;

	/**
	* 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)}.
	*/
	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 static int sSavedWidgetId = -1;

	private AppWidgetProviderInfo mWidgetInfo;
	private LauncherAppWidgetHostView mQsb;

	private BroadcastReceiver mRebindReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	rebindFragment();
	}
	};

	@Override
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);

	IntentFilter filter = new IntentFilter(Launcher.ACTION_APPWIDGET_HOST_RESET);
	filter.addAction(SearchManager.INTENT_GLOBAL_SEARCH_ACTIVITY_CHANGED);
	getActivity().registerReceiver(mRebindReceiver, filter);
	}

	private FrameLayout mWrapper;

	@Override
	public View onCreateView(
	LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

	if (savedInstanceState != null) {
	sSavedWidgetId = savedInstanceState.getInt(QSB_WIDGET_ID, -1);
	}
	mWrapper = new FrameLayout(getActivity());
	mWrapper.addView(createQsb(inflater, mWrapper));
	return mWrapper;
	}

	private View createQsb(LayoutInflater inflater, ViewGroup container) {
	Launcher launcher = (Launcher) getActivity();
	mWidgetInfo = getSearchWidgetProvider(launcher);
	if (mWidgetInfo == null) {
	// There is no search provider, just show the default widget.
	return getDefaultView(inflater, container, false);
	}

	SharedPreferences prefs = Utilities.getPrefs(launcher);
	AppWidgetManagerCompat widgetManager = AppWidgetManagerCompat.getInstance(launcher);
	LauncherAppWidgetHost widgetHost = launcher.getAppWidgetHost();
	InvariantDeviceProfile idp = LauncherAppState.getInstance().getInvariantDeviceProfile();

	Bundle opts = new Bundle();
	Rect size = AppWidgetResizeFrame.getWidgetSizeRanges(launcher, 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 = prefs.getInt(QSB_WIDGET_ID, -1);
	AppWidgetProviderInfo widgetInfo = widgetManager.getAppWidgetInfo(widgetId);
	boolean isWidgetBound = (widgetInfo != null) &&
	widgetInfo.provider.equals(mWidgetInfo.provider);

	if (!isWidgetBound) {
	// widgetId is already bound and its not the correct provider.
	// Delete the widget id.
	if (widgetId > -1) {
	widgetHost.deleteAppWidgetId(widgetId);
	widgetId = -1;
	}

	widgetId = widgetHost.allocateAppWidgetId();
	isWidgetBound = widgetManager.bindAppWidgetIdIfAllowed(widgetId, mWidgetInfo, opts);
	if (!isWidgetBound) {
	widgetHost.deleteAppWidgetId(widgetId);
	widgetId = -1;
	}
	}

	if (isWidgetBound) {
	mQsb = (LauncherAppWidgetHostView)
	widgetHost.createView(launcher, widgetId, mWidgetInfo);
	mQsb.setId(R.id.qsb_widget);
	mQsb.mErrorViewId = R.layout.qsb_default_view;

	if (!Utilities.containsAll(AppWidgetManager.getInstance(launcher)
	.getAppWidgetOptions(widgetId), opts)) {
	mQsb.updateAppWidgetOptions(opts);
	}
	mQsb.setPadding(0, 0, 0, 0);
	return mQsb;
	}

	// Return a default widget with setup icon.
	return getDefaultView(inflater, container, true);
	}

	@Override
	public void onClick(View view) {
	if (view.getId() == R.id.btn_qsb_search) {
	getActivity().startSearch("", false, null, true);
	} else if (view.getId() == R.id.btn_qsb_setup) {
	// Allocate a new widget id for QSB
	sSavedWidgetId = ((Launcher) getActivity())
	.getAppWidgetHost().allocateAppWidgetId();
	// Start intent for bind the widget
	Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_BIND);
	intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, sSavedWidgetId);
	intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_PROVIDER, mWidgetInfo.provider);
	startActivityForResult(intent, REQUEST_BIND_QSB);
	}
	}

	@Override
	public void onSaveInstanceState(Bundle outState) {
	super.onSaveInstanceState(outState);
	outState.putInt(QSB_WIDGET_ID, sSavedWidgetId);
	}

	@Override
	public void onActivityResult(int requestCode, int resultCode, Intent data) {
	if (requestCode == REQUEST_BIND_QSB) {
	if (resultCode == Activity.RESULT_OK) {
	int widgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
	sSavedWidgetId);
	Utilities.getPrefs(getActivity()).edit().putInt(QSB_WIDGET_ID, widgetId).apply();
	sSavedWidgetId = -1;
	rebindFragment();
	} else if (sSavedWidgetId != -1) {
	((Launcher) getActivity()).getAppWidgetHost().deleteAppWidgetId(sSavedWidgetId);
	sSavedWidgetId = -1;
	}
	}
	}

	@Override
	public void onResume() {
	super.onResume();
	if (mQsb != null && mQsb.isReinflateRequired()) {
	rebindFragment();
	}
	}

	@Override
	public void onDestroy() {
	getActivity().unregisterReceiver(mRebindReceiver);
	super.onDestroy();
	}

	private void rebindFragment() {
	if (mWrapper != null && getActivity() != null) {
	mWrapper.removeAllViews();
	mWrapper.addView(createQsb(getActivity().getLayoutInflater(), mWrapper));
	}
	}

	private View getDefaultView(LayoutInflater inflater, ViewGroup parent, boolean showSetup) {
	View v = inflater.inflate(R.layout.qsb_default_view, parent, false);
	if (showSetup) {
	View setupButton = v.findViewById(R.id.btn_qsb_setup);
	setupButton.setVisibility(View.VISIBLE);
	setupButton.setOnClickListener(this);
	}
	v.findViewById(R.id.btn_qsb_search).setOnClickListener(this);
	return v;
	}
	}

	/**
	* 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;
	}
	}