[Storage] Android - ManageSpace UI, Important Origins, and CBD Dialog

chrome/android/java/src/org/chromium/chrome/browser/preferences/website/ManageSpaceActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/website/ManageSpaceActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/website/ManageSpaceActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/website/ManageSpaceActivity.java
new file mode 100644
index 0000000000000000000000000000000000000000..a29247b1796069a0925556f0cc31d4e16c0bedde
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+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/website/ManageSpaceActivity.java
@@ -0,0 +1,274 @@
+// Copyright 2016 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.preferences.website;
+
+import android.annotation.TargetApi;
+import android.app.ActivityManager;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.pm.ActivityInfo;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.res.Resources;
+import android.os.Build;
+import android.os.Bundle;
+import android.support.v7.app.AlertDialog;
+import android.support.v7.app.AppCompatActivity;
+import android.text.format.Formatter;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+import org.chromium.base.Log;
+import org.chromium.base.library_loader.ProcessInitException;
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.init.BrowserParts;
+import org.chromium.chrome.browser.init.ChromeBrowserInitializer;
+import org.chromium.chrome.browser.init.EmptyBrowserParts;
+import org.chromium.chrome.browser.preferences.Preferences;
+import org.chromium.chrome.browser.preferences.PreferencesLauncher;
+import org.chromium.chrome.browser.preferences.website.Website.StoredDataClearedCallback;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * This is the target activity for the "Manage Storage" button in the Android Settings UI. This is
+ * configured in AndroidManifest.xml by setting android:manageSpaceActivity for the application.
+ *  The browser process must be started here because this Activity may be started explicitly from
+ *  Android settings, when Android is restoring ManageSpaceActivity after Chrome was killed, or for
+ *  tests.
+ */
+@TargetApi(Build.VERSION_CODES.KITKAT)
+public class ManageSpaceActivity extends AppCompatActivity implements View.OnClickListener {
+    private static final String TAG = "ManageSpaceActivity";
+
+    private TextView mUnimportantSiteDataSizeText;
+    private TextView mSiteDataSizeText;
+    private Button mClearUnimportantButton;
+    private Button mManageSiteDataButton;
+    private Button mClearAllDataButton;
+
+    private static boolean sActivityNotExportedChecked;
+
+    private boolean mIsNativeInitialized;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        ensureActivityNotExported();
+
+        setContentView(R.layout.manage_space_activity);
+        Resources r = getResources();
+        setTitle(String.format(r.getString(R.string.storage_management_activity_label),
+                r.getString(R.string.app_name)));
+
+        mSiteDataSizeText = (TextView) findViewById(R.id.site_data_storage_size_text);
+        mSiteDataSizeText.setText(R.string.storage_management_computing_size);
+        mUnimportantSiteDataSizeText =
+                (TextView) findViewById(R.id.unimportant_site_data_storage_size_text);
+        mUnimportantSiteDataSizeText.setText(R.string.storage_management_computing_size);
+        mManageSiteDataButton = (Button) findViewById(R.id.manage_site_data_storage);
+        mClearUnimportantButton = (Button) findViewById(R.id.clear_unimportant_site_data_storage);
+
+        // We initially disable all of our buttons except for the 'Clear All Data' button, and wait
+        // until the browser is finished initializing to enable them. We want to make sure the
+        // 'Clear All Data' button is enabled so users can do this even if it's taking forever for
+        // the Chromium process to boot up.
+        mManageSiteDataButton.setEnabled(false);
+        mClearUnimportantButton.setEnabled(false);
+        mManageSiteDataButton.setOnClickListener(this);
+        mClearUnimportantButton.setOnClickListener(this);
+
+        // We should only be using this activity if we're >= KitKat.
+        assert android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT;
+        mClearAllDataButton = (Button) findViewById(R.id.clear_all_data);
+        mClearAllDataButton.setOnClickListener(this);
+        super.onCreate(savedInstanceState);
+
+        BrowserParts parts = new EmptyBrowserParts() {
+            @Override
+            public void finishNativeInitialization() {
+                ManageSpaceActivity.this.finishNativeInitialization();
+            }
+            @Override
+            public void onStartupFailure() {
+                mSiteDataSizeText.setText(R.string.storage_management_startup_failure);
+                mUnimportantSiteDataSizeText.setText(R.string.storage_management_startup_failure);
+            }
+        };
+
+        try {
+            ChromeBrowserInitializer.getInstance(getApplicationContext())
+                    .handlePreNativeStartup(parts);
+            ChromeBrowserInitializer.getInstance(getApplicationContext())
+                    .handlePostNativeStartup(true, parts);
+        } catch (ProcessInitException e) {
+            // We don't want to exit, as the user should still be able to clear all browsing data.
+            Log.e(TAG, "Unable to load native library.", e);
+        }
+    }
+
+    public void finishNativeInitialization() {
+        mIsNativeInitialized = true;
+        mManageSiteDataButton.setEnabled(true);
+        mClearUnimportantButton.setEnabled(true);
+        refreshStorageNumbers();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        if (mIsNativeInitialized) refreshStorageNumbers();
+    }
+
+    /** This refreshes the storage numbers by fetching all site permissions. */
+    private void refreshStorageNumbers() {
+        WebsitePermissionsFetcher fetcher = new WebsitePermissionsFetcher(new SizeCalculator());
+        fetcher.fetchPreferencesForCategory(
+                SiteSettingsCategory.fromString(SiteSettingsCategory.CATEGORY_USE_STORAGE));
+    }
+
+    /** Data will be cleared once we fetch all site size and important status info. */
+    private void clearUnimportantData() {
+        mSiteDataSizeText.setText(R.string.storage_management_computing_size);
+        mUnimportantSiteDataSizeText.setText(R.string.storage_management_computing_size);
+        UnimportantSiteDataClearer clearer = new UnimportantSiteDataClearer();
+        clearer.clearData();
+    }
+
+    @Override
+    public void onClick(View view) {
+        if (view == mClearUnimportantButton) {
+            AlertDialog.Builder builder = new AlertDialog.Builder(this);
+            builder.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
+                @Override
+                public void onClick(DialogInterface dialog, int id) {
+                    clearUnimportantData();
+                }
+            });
+            builder.setNegativeButton(R.string.cancel, null);
+            builder.setTitle(R.string.storage_clear_site_storage_title);
+            builder.setMessage(R.string.storage_management_clear_unimportant_dialog_text);
+            builder.create().show();
+        } else if (view == mManageSiteDataButton) {
+            Intent intent = PreferencesLauncher.createIntentForSettingsPage(
+                    this, SingleCategoryPreferences.class.getName());
+            Bundle initialArguments = new Bundle();
+            initialArguments.putString(SingleCategoryPreferences.EXTRA_CATEGORY,
+                    SiteSettingsCategory.CATEGORY_USE_STORAGE);
+            initialArguments.putString(SingleCategoryPreferences.EXTRA_TITLE,
+                    getString(R.string.website_settings_storage));
+            intent.putExtra(Preferences.EXTRA_SHOW_FRAGMENT_ARGUMENTS, initialArguments);
+            startActivity(intent);
+        } else if (view == mClearAllDataButton) {
+            final ActivityManager activityManager =
+                    (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
+            AlertDialog.Builder builder = new AlertDialog.Builder(this);
+            builder.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
+                @Override
+                public void onClick(DialogInterface dialog, int id) {
+                    activityManager.clearApplicationUserData();
+                }
+            });
+            builder.setNegativeButton(R.string.cancel, null);
+            builder.setTitle(R.string.storage_management_reset_app_dialog_title);
+            builder.setMessage(R.string.storage_management_reset_app_dialog_text);
+            builder.create().show();
+        }
+    }
+
+    private void onSiteStorageSizeCalculated(long totalSize, long unimportantSize) {
+        mSiteDataSizeText.setText(Formatter.formatFileSize(this, totalSize));
+        mUnimportantSiteDataSizeText.setText(Formatter.formatFileSize(this, unimportantSize));
+    }
+
+    /** This function takes sites by origin and host and adds them all to one set. */
+    private static Set<Website> collapseAllSites(
+            Map<String, Set<Website>> sitesByOrigin, Map<String, Set<Website>> sitesByHost) {
+        Set<Website> sites = new HashSet<>();
+        // Add sites by origins.
+        for (Map.Entry<String, Set<Website>> element : sitesByOrigin.entrySet()) {
+            for (Website site : element.getValue()) {
+                sites.add(site);
+            }
+        }
+        // Add sites accessible by host name.
+        for (Map.Entry<String, Set<Website>> element : sitesByHost.entrySet()) {
+            for (Website site : element.getValue()) {
+                sites.add(site);
+            }
+        }
+        return sites;
+    }
+
+    private class SizeCalculator implements WebsitePermissionsFetcher.WebsitePermissionsCallback {
+        @Override
+        public void onWebsitePermissionsAvailable(
+                Map<String, Set<Website>> sitesByOrigin, Map<String, Set<Website>> sitesByHost) {
+            Set<Website> sites = collapseAllSites(sitesByOrigin, sitesByHost);
+
+            long siteStorageSize = 0;
+            long importantSiteStorageTotal = 0;
+            for (Website site : sites) {
+                siteStorageSize += site.getTotalUsage();
+                if (site.getLocalStorageInfo().isDomainImportant()) {
+                    Log.i(TAG, site.getAddress().getOrigin() + " is important.");
+                    importantSiteStorageTotal += site.getTotalUsage();
+                }
+            }
+            onSiteStorageSizeCalculated(
+                    siteStorageSize, siteStorageSize - importantSiteStorageTotal);
+        }
+    }
+
+    private class UnimportantSiteDataClearer
+            implements WebsitePermissionsFetcher.WebsitePermissionsCallback {
+        /**
+         * We fetch all the websites and clear all the non-important data. This happens
+         * asynchronously, and at the end we update the UI with the new storage numbers.
+         */
+        public void clearData() {
+            WebsitePermissionsFetcher fetcher = new WebsitePermissionsFetcher(this);
+            fetcher.fetchPreferencesForCategory(
+                    SiteSettingsCategory.fromString(SiteSettingsCategory.CATEGORY_USE_STORAGE));
+        }
+
+        @Override
+        public void onWebsitePermissionsAvailable(
+                Map<String, Set<Website>> sitesByOrigin, Map<String, Set<Website>> sitesByHost) {
+            Set<Website> sites = collapseAllSites(sitesByOrigin, sitesByHost);
+
+            long siteStorageLeft = 0;
+            for (Website site : sites) {
+                if (!site.getLocalStorageInfo().isDomainImportant()) {
+                    site.clearAllStoredData(new StoredDataClearedCallback() {
+                        @Override
+                        public void onStoredDataCleared() {}
+                    });
+                } else {
+                    siteStorageLeft += site.getTotalUsage();
+                }
+            }
+            onSiteStorageSizeCalculated(siteStorageLeft, 0);
+        }
+    }
+
+    // If ManageSpaceActivity is exported, then it's vulnerable to a fragment injection exploit:
+    // http://securityintelligence.com/new-vulnerability-android-framework-fragment-injection
+    private void ensureActivityNotExported() {
+        if (sActivityNotExportedChecked) return;
+        sActivityNotExportedChecked = true;
+        try {
+            ActivityInfo activityInfo = getPackageManager().getActivityInfo(getComponentName(), 0);
+            if (activityInfo.exported) {
+                throw new IllegalStateException("ManageSpaceActivity must not be exported.");
+            }
+        } catch (NameNotFoundException ex) {
+            // Something terribly wrong has happened.
+            throw new RuntimeException(ex);
+        }
+    }
+}