chrome/android/java/src/org/chromium/chrome/browser/DefaultBrowserInfo.java - chromium/src - Git at Google

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 package org.chromium.chrome.browser;

 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.net.Uri;
 import android.support.annotation.IntDef;
 import android.text.TextUtils;

 import org.chromium.base.BuildInfo;
 import org.chromium.base.ContextUtils;
 import org.chromium.base.library_loader.LibraryProcessType;
 import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.base.task.AsyncTask;
 import org.chromium.base.task.BackgroundOnlyAsyncTask;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.preferences.ChromePreferenceManager;
 import org.chromium.content_public.browser.BrowserStartupController;

 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.RejectedExecutionException;

 /**
  * A utility class for querying information about the default browser setting.
  */
 public final class DefaultBrowserInfo {
     private static final String SAMPLE_URL = "https://www.madeupdomainforcheck123.com/";

     /**
      * A list of potential default browser states.  To add a type to this list please update
      * MobileDefaultBrowserState in histograms.xml and make sure to keep this list in sync.
      * Additions should be treated as APPEND ONLY to keep the UMA metric semantics the same over
      * time.
      */
     @IntDef({MobileDefaultBrowserState.NO_DEFAULT, MobileDefaultBrowserState.CHROME_SYSTEM_DEFAULT,
             MobileDefaultBrowserState.CHROME_INSTALLED_DEFAULT,
             MobileDefaultBrowserState.OTHER_SYSTEM_DEFAULT,
             MobileDefaultBrowserState.OTHER_INSTALLED_DEFAULT})
     @Retention(RetentionPolicy.SOURCE)
     private @interface MobileDefaultBrowserState {
         int NO_DEFAULT = 0;
         int CHROME_SYSTEM_DEFAULT = 1;
         int CHROME_INSTALLED_DEFAULT = 2;
         int OTHER_SYSTEM_DEFAULT = 3;
         int OTHER_INSTALLED_DEFAULT = 4;
         int NUM_ENTRIES = 5;
     }

     /**
      * Helper class for passing information about the system's default browser settings back from a
      * worker task.
      */
     private static class DefaultInfo {
         public boolean isChromeSystem;
         public boolean isChromeDefault;
         public boolean isDefaultSystem;
         public boolean hasDefault;
         public int browserCount;
         public int systemCount;
     }

     /** A lock to synchronize background tasks to retrieve browser information. */
     private static final Object sDirCreationLock = new Object();

     private static AsyncTask<ArrayList<String>> sDefaultBrowserFetcher;

     /** Don't instantiate me. */
     private DefaultBrowserInfo() {}

     /**
      * Initialize an AsyncTask for getting menu title of opening a link in default browser.
      */
     public static void initBrowserFetcher() {
         synchronized (sDirCreationLock) {
             if (sDefaultBrowserFetcher == null) {
                 sDefaultBrowserFetcher = new BackgroundOnlyAsyncTask<ArrayList<String>>() {
                     @Override
                     protected ArrayList<String> doInBackground() {
                         Context context = ContextUtils.getApplicationContext();
                         ArrayList<String> menuTitles = new ArrayList<String>(2);
                         // Store the package label of current application.
                         menuTitles.add(getTitleFromPackageLabel(
                                 context, BuildInfo.getInstance().hostPackageLabel));

                         PackageManager pm = context.getPackageManager();
                         ResolveInfo info = getResolveInfoForViewIntent(pm);

                         // Caches whether Chrome is set as a default browser on the device.
                         boolean isDefault = info != null && info.match != 0
                                 && TextUtils.equals(
                                            context.getPackageName(), info.activityInfo.packageName);
                         ChromePreferenceManager.getInstance().writeBoolean(
                                 ChromePreferenceManager.CHROME_DEFAULT_BROWSER, isDefault);

                         // Check if there is a default handler for the Intent.  If so, store its
                         // label.
                         String packageLabel = null;
                         if (info != null && info.match != 0 && info.loadLabel(pm) != null) {
                             packageLabel = info.loadLabel(pm).toString();
                         }
                         menuTitles.add(getTitleFromPackageLabel(context, packageLabel));
                         return menuTitles;
                     }
                 };
                 sDefaultBrowserFetcher.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
             }
         }
     }

     private static String getTitleFromPackageLabel(Context context, String packageLabel) {
         return packageLabel == null
                 ? context.getString(R.string.menu_open_in_product_default)
                 : context.getString(R.string.menu_open_in_product, packageLabel);
     }

     /**
      * @return Default ResolveInfo to handle a VIEW intent for a url.
      * @param pm The PackageManager of current context.
      */
     private static ResolveInfo getResolveInfoForViewIntent(PackageManager pm) {
         Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(SAMPLE_URL));
         try {
             return pm.resolveActivity(intent, 0);
         } catch (NullPointerException e) {
             return null;
         }
     }

     private static List<ResolveInfo> getResolveInfoListForViewIntent(PackageManager pm) {
         Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(SAMPLE_URL));
         try {
             return pm.queryIntentActivities(intent, PackageManager.MATCH_ALL);
         } catch (NullPointerException ex) {
             return null;
         }
     }

     /**
      * @return Title of the menu item for opening a link in the default browser.
      * @param forceChromeAsDefault Whether the Custom Tab is created by Chrome.
      */
     public static String getTitleOpenInDefaultBrowser(final boolean forceChromeAsDefault) {
         if (sDefaultBrowserFetcher == null) {
             initBrowserFetcher();
         }
         try {
             // If the Custom Tab was created by Chrome, Chrome should handle the action for the
             // overflow menu.
             return forceChromeAsDefault ? sDefaultBrowserFetcher.get().get(0)
                                         : sDefaultBrowserFetcher.get().get(1);
         } catch (InterruptedException | ExecutionException e) {
             return ContextUtils.getApplicationContext().getString(
                     R.string.menu_open_in_product_default);
         }
     }

     /**
      * Log statistics about the current default browser to UMA.
      */
     public static void logDefaultBrowserStats() {
         assert BrowserStartupController.get(LibraryProcessType.PROCESS_BROWSER)
                 .isStartupSuccessfullyCompleted();

         try {
             new AsyncTask<DefaultInfo>() {
                 @Override
                 protected DefaultInfo doInBackground() {
                     Context context = ContextUtils.getApplicationContext();

                     PackageManager pm = context.getPackageManager();

                     DefaultInfo info = new DefaultInfo();

                     // Query the default handler first.
                     ResolveInfo defaultRi = getResolveInfoForViewIntent(pm);
                     if (defaultRi != null && defaultRi.match != 0) {
                         info.hasDefault = true;
                         info.isChromeDefault = isSamePackage(context, defaultRi);
                         info.isDefaultSystem = isSystemPackage(defaultRi);
                     }

                     // Query all other intent handlers.
                     Set<String> uniquePackages = new HashSet<>();
                     List<ResolveInfo> ris = getResolveInfoListForViewIntent(pm);
                     if (ris != null) {
                         for (ResolveInfo ri : ris) {
                             String packageName = ri.activityInfo.applicationInfo.packageName;
                             if (!uniquePackages.add(packageName)) continue;

                             if (isSystemPackage(ri)) {
                                 if (isSamePackage(context, ri)) info.isChromeSystem = true;
                                 info.systemCount++;
                             }
                         }
                     }

                     info.browserCount = uniquePackages.size();

                     return info;
                 }

                 @Override
                 protected void onPostExecute(DefaultInfo info) {
                     if (info == null) return;

                     RecordHistogram.recordCount100Histogram(
                             getSystemBrowserCountUmaName(info), info.systemCount);
                     RecordHistogram.recordCount100Histogram(
                             getDefaultBrowserCountUmaName(info), info.browserCount);
                     RecordHistogram.recordEnumeratedHistogram("Mobile.DefaultBrowser.State",
                             getDefaultBrowserUmaState(info), MobileDefaultBrowserState.NUM_ENTRIES);
                 }
             }
                     .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
         } catch (RejectedExecutionException ex) {
             // Fail silently here since this is not a critical task.
         }
     }

     private static String getSystemBrowserCountUmaName(DefaultInfo info) {
         if (info.isChromeSystem) return "Mobile.DefaultBrowser.SystemBrowserCount.ChromeSystem";
         return "Mobile.DefaultBrowser.SystemBrowserCount.ChromeNotSystem";
     }

     private static String getDefaultBrowserCountUmaName(DefaultInfo info) {
         if (!info.hasDefault) return "Mobile.DefaultBrowser.BrowserCount.NoDefault";
         if (info.isChromeDefault) return "Mobile.DefaultBrowser.BrowserCount.ChromeDefault";
         return "Mobile.DefaultBrowser.BrowserCount.OtherDefault";
     }

     private static @MobileDefaultBrowserState int getDefaultBrowserUmaState(DefaultInfo info) {
         if (!info.hasDefault) return MobileDefaultBrowserState.NO_DEFAULT;

         if (info.isChromeDefault) {
             if (info.isDefaultSystem) return MobileDefaultBrowserState.CHROME_SYSTEM_DEFAULT;
             return MobileDefaultBrowserState.CHROME_INSTALLED_DEFAULT;
         }

         if (info.isDefaultSystem) return MobileDefaultBrowserState.OTHER_SYSTEM_DEFAULT;
         return MobileDefaultBrowserState.OTHER_INSTALLED_DEFAULT;
     }

     private static boolean isSamePackage(Context context, ResolveInfo info) {
         return TextUtils.equals(
                 context.getPackageName(), info.activityInfo.applicationInfo.packageName);
     }

     private static boolean isSystemPackage(ResolveInfo info) {
         return (info.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
     }
 }
	// Copyright 2017 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	package org.chromium.chrome.browser;

	import android.content.Context;
	import android.content.Intent;
	import android.content.pm.ApplicationInfo;
	import android.content.pm.PackageManager;
	import android.content.pm.ResolveInfo;
	import android.net.Uri;
	import android.support.annotation.IntDef;
	import android.text.TextUtils;

	import org.chromium.base.BuildInfo;
	import org.chromium.base.ContextUtils;
	import org.chromium.base.library_loader.LibraryProcessType;
	import org.chromium.base.metrics.RecordHistogram;
	import org.chromium.base.task.AsyncTask;
	import org.chromium.base.task.BackgroundOnlyAsyncTask;
	import org.chromium.chrome.R;
	import org.chromium.chrome.browser.preferences.ChromePreferenceManager;
	import org.chromium.content_public.browser.BrowserStartupController;

	import java.lang.annotation.Retention;
	import java.lang.annotation.RetentionPolicy;
	import java.util.ArrayList;
	import java.util.HashSet;
	import java.util.List;
	import java.util.Set;
	import java.util.concurrent.ExecutionException;
	import java.util.concurrent.RejectedExecutionException;

	/**
	* A utility class for querying information about the default browser setting.
	*/
	public final class DefaultBrowserInfo {
	private static final String SAMPLE_URL = "https://www.madeupdomainforcheck123.com/";

	/**
	* A list of potential default browser states. To add a type to this list please update
	* MobileDefaultBrowserState in histograms.xml and make sure to keep this list in sync.
	* Additions should be treated as APPEND ONLY to keep the UMA metric semantics the same over
	* time.
	*/
	@IntDef({MobileDefaultBrowserState.NO_DEFAULT, MobileDefaultBrowserState.CHROME_SYSTEM_DEFAULT,
	MobileDefaultBrowserState.CHROME_INSTALLED_DEFAULT,
	MobileDefaultBrowserState.OTHER_SYSTEM_DEFAULT,
	MobileDefaultBrowserState.OTHER_INSTALLED_DEFAULT})
	@Retention(RetentionPolicy.SOURCE)
	private @interface MobileDefaultBrowserState {
	int NO_DEFAULT = 0;
	int CHROME_SYSTEM_DEFAULT = 1;
	int CHROME_INSTALLED_DEFAULT = 2;
	int OTHER_SYSTEM_DEFAULT = 3;
	int OTHER_INSTALLED_DEFAULT = 4;
	int NUM_ENTRIES = 5;
	}

	/**
	* Helper class for passing information about the system's default browser settings back from a
	* worker task.
	*/
	private static class DefaultInfo {
	public boolean isChromeSystem;
	public boolean isChromeDefault;
	public boolean isDefaultSystem;
	public boolean hasDefault;
	public int browserCount;
	public int systemCount;
	}

	/** A lock to synchronize background tasks to retrieve browser information. */
	private static final Object sDirCreationLock = new Object();

	private static AsyncTask<ArrayList<String>> sDefaultBrowserFetcher;

	/** Don't instantiate me. */
	private DefaultBrowserInfo() {}

	/**
	* Initialize an AsyncTask for getting menu title of opening a link in default browser.
	*/
	public static void initBrowserFetcher() {
	synchronized (sDirCreationLock) {
	if (sDefaultBrowserFetcher == null) {
	sDefaultBrowserFetcher = new BackgroundOnlyAsyncTask<ArrayList<String>>() {
	@Override
	protected ArrayList<String> doInBackground() {
	Context context = ContextUtils.getApplicationContext();
	ArrayList<String> menuTitles = new ArrayList<String>(2);
	// Store the package label of current application.
	menuTitles.add(getTitleFromPackageLabel(
	context, BuildInfo.getInstance().hostPackageLabel));

	PackageManager pm = context.getPackageManager();
	ResolveInfo info = getResolveInfoForViewIntent(pm);

	// Caches whether Chrome is set as a default browser on the device.
	boolean isDefault = info != null && info.match != 0
	&& TextUtils.equals(
	context.getPackageName(), info.activityInfo.packageName);
	ChromePreferenceManager.getInstance().writeBoolean(
	ChromePreferenceManager.CHROME_DEFAULT_BROWSER, isDefault);

	// Check if there is a default handler for the Intent. If so, store its
	// label.
	String packageLabel = null;
	if (info != null && info.match != 0 && info.loadLabel(pm) != null) {
	packageLabel = info.loadLabel(pm).toString();
	}
	menuTitles.add(getTitleFromPackageLabel(context, packageLabel));
	return menuTitles;
	}
	};
	sDefaultBrowserFetcher.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
	}
	}
	}

	private static String getTitleFromPackageLabel(Context context, String packageLabel) {
	return packageLabel == null
	? context.getString(R.string.menu_open_in_product_default)
	: context.getString(R.string.menu_open_in_product, packageLabel);
	}

	/**
	* @return Default ResolveInfo to handle a VIEW intent for a url.
	* @param pm The PackageManager of current context.
	*/
	private static ResolveInfo getResolveInfoForViewIntent(PackageManager pm) {
	Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(SAMPLE_URL));
	try {
	return pm.resolveActivity(intent, 0);
	} catch (NullPointerException e) {
	return null;
	}
	}

	private static List<ResolveInfo> getResolveInfoListForViewIntent(PackageManager pm) {
	Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(SAMPLE_URL));
	try {
	return pm.queryIntentActivities(intent, PackageManager.MATCH_ALL);
	} catch (NullPointerException ex) {
	return null;
	}
	}

	/**
	* @return Title of the menu item for opening a link in the default browser.
	* @param forceChromeAsDefault Whether the Custom Tab is created by Chrome.
	*/
	public static String getTitleOpenInDefaultBrowser(final boolean forceChromeAsDefault) {
	if (sDefaultBrowserFetcher == null) {
	initBrowserFetcher();
	}
	try {
	// If the Custom Tab was created by Chrome, Chrome should handle the action for the
	// overflow menu.
	return forceChromeAsDefault ? sDefaultBrowserFetcher.get().get(0)
	: sDefaultBrowserFetcher.get().get(1);
	} catch (InterruptedException \| ExecutionException e) {
	return ContextUtils.getApplicationContext().getString(
	R.string.menu_open_in_product_default);
	}
	}

	/**
	* Log statistics about the current default browser to UMA.
	*/
	public static void logDefaultBrowserStats() {
	assert BrowserStartupController.get(LibraryProcessType.PROCESS_BROWSER)
	.isStartupSuccessfullyCompleted();

	try {
	new AsyncTask<DefaultInfo>() {
	@Override
	protected DefaultInfo doInBackground() {
	Context context = ContextUtils.getApplicationContext();

	PackageManager pm = context.getPackageManager();

	DefaultInfo info = new DefaultInfo();

	// Query the default handler first.
	ResolveInfo defaultRi = getResolveInfoForViewIntent(pm);
	if (defaultRi != null && defaultRi.match != 0) {
	info.hasDefault = true;
	info.isChromeDefault = isSamePackage(context, defaultRi);
	info.isDefaultSystem = isSystemPackage(defaultRi);
	}

	// Query all other intent handlers.
	Set<String> uniquePackages = new HashSet<>();
	List<ResolveInfo> ris = getResolveInfoListForViewIntent(pm);
	if (ris != null) {
	for (ResolveInfo ri : ris) {
	String packageName = ri.activityInfo.applicationInfo.packageName;
	if (!uniquePackages.add(packageName)) continue;

	if (isSystemPackage(ri)) {
	if (isSamePackage(context, ri)) info.isChromeSystem = true;
	info.systemCount++;
	}
	}
	}

	info.browserCount = uniquePackages.size();

	return info;
	}

	@Override
	protected void onPostExecute(DefaultInfo info) {
	if (info == null) return;

	RecordHistogram.recordCount100Histogram(
	getSystemBrowserCountUmaName(info), info.systemCount);
	RecordHistogram.recordCount100Histogram(
	getDefaultBrowserCountUmaName(info), info.browserCount);
	RecordHistogram.recordEnumeratedHistogram("Mobile.DefaultBrowser.State",
	getDefaultBrowserUmaState(info), MobileDefaultBrowserState.NUM_ENTRIES);
	}
	}
	.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
	} catch (RejectedExecutionException ex) {
	// Fail silently here since this is not a critical task.
	}
	}

	private static String getSystemBrowserCountUmaName(DefaultInfo info) {
	if (info.isChromeSystem) return "Mobile.DefaultBrowser.SystemBrowserCount.ChromeSystem";
	return "Mobile.DefaultBrowser.SystemBrowserCount.ChromeNotSystem";
	}

	private static String getDefaultBrowserCountUmaName(DefaultInfo info) {
	if (!info.hasDefault) return "Mobile.DefaultBrowser.BrowserCount.NoDefault";
	if (info.isChromeDefault) return "Mobile.DefaultBrowser.BrowserCount.ChromeDefault";
	return "Mobile.DefaultBrowser.BrowserCount.OtherDefault";
	}

	private static @MobileDefaultBrowserState int getDefaultBrowserUmaState(DefaultInfo info) {
	if (!info.hasDefault) return MobileDefaultBrowserState.NO_DEFAULT;

	if (info.isChromeDefault) {
	if (info.isDefaultSystem) return MobileDefaultBrowserState.CHROME_SYSTEM_DEFAULT;
	return MobileDefaultBrowserState.CHROME_INSTALLED_DEFAULT;
	}

	if (info.isDefaultSystem) return MobileDefaultBrowserState.OTHER_SYSTEM_DEFAULT;
	return MobileDefaultBrowserState.OTHER_INSTALLED_DEFAULT;
	}

	private static boolean isSamePackage(Context context, ResolveInfo info) {
	return TextUtils.equals(
	context.getPackageName(), info.activityInfo.applicationInfo.packageName);
	}

	private static boolean isSystemPackage(ResolveInfo info) {
	return (info.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
	}
	}