Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/bookmarkswidget/BookmarkThumbnailWidgetProviderBase.java

+// Copyright 2015 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.bookmarkswidget;
+
+import android.app.PendingIntent;
+import android.appwidget.AppWidgetManager;
+import android.appwidget.AppWidgetProvider;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.widget.RemoteViews;
+
+import com.google.android.apps.chrome.R;
+import com.google.android.apps.chrome.appwidget.bookmarks.BookmarkThumbnailWidgetProvider;
+
+import org.chromium.chrome.browser.util.IntentUtils;
+
+/**
+ * Widget that shows a preview of the user's bookmarks.
+ */
+public class BookmarkThumbnailWidgetProviderBase extends AppWidgetProvider {
+    private static final String ACTION_BOOKMARK_APPWIDGET_UPDATE_SUFFIX =
+            ".BOOKMARK_APPWIDGET_UPDATE";
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        // Handle bookmark-specific updates ourselves because they might be
+        // coming in without extras, which AppWidgetProvider then blocks.
+        final String action = intent.getAction();
+        if (getBookmarkAppWidgetUpdateAction(context).equals(action)) {
+            AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
+            if (intent.hasExtra(AppWidgetManager.EXTRA_APPWIDGET_ID)) {
+                performUpdate(context, appWidgetManager,
+                        new int[] {IntentUtils.safeGetIntExtra(intent,
+                                AppWidgetManager.EXTRA_APPWIDGET_ID, -1)});
+            } else {
+                performUpdate(context, appWidgetManager,
+                        appWidgetManager.getAppWidgetIds(getComponentName(context)));
+            }
+        } else {
+            super.onReceive(context, intent);
+        }
+    }
+
+    @Override
+    public void onUpdate(Context context, AppWidgetManager manager, int[] ids) {
+        super.onUpdate(context, manager, ids);
+        performUpdate(context, manager, ids);
+    }
+
+    @Override
+    public void onDeleted(Context context, int[] appWidgetIds) {
+        super.onDeleted(context, appWidgetIds);
+        for (int widgetId : appWidgetIds) {
+            BookmarkThumbnailWidgetService.deleteWidgetState(context, widgetId);
+        }
+        removeOrphanedStates(context);
+    }
+
+    @Override
+    public void onDisabled(Context context) {
+        super.onDisabled(context);
+        removeOrphanedStates(context);
+    }
+
+    /**
+     * Refreshes all Chrome Bookmark widgets.
+     */
+    public static void refreshAllWidgets(Context context) {
+        context.sendBroadcast(new Intent(
+                getBookmarkAppWidgetUpdateAction(context),
+                null, context, BookmarkThumbnailWidgetProvider.class));
+    }
+
+    static String getBookmarkAppWidgetUpdateAction(Context context) {
+        return context.getPackageName() + ACTION_BOOKMARK_APPWIDGET_UPDATE_SUFFIX;
+    }
+
+    /**
+     *  Checks for any states that may have not received onDeleted.
+     */
+    private void removeOrphanedStates(Context context) {
+        AppWidgetManager wm = AppWidgetManager.getInstance(context);
+        int[] ids = wm.getAppWidgetIds(getComponentName(context));
+        for (int id : ids) {
+            BookmarkThumbnailWidgetService.deleteWidgetState(context, id);
+        }
+    }
+
+    private void performUpdate(Context context,
+            AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+        Intent chromeIntent = new Intent(Intent.ACTION_MAIN);
+        chromeIntent.setPackage(context.getPackageName());
+
+        PendingIntent launchChrome = PendingIntent.getActivity(context, 0, chromeIntent,
+                PendingIntent.FLAG_UPDATE_CURRENT);
+
+        for (int appWidgetId : appWidgetIds) {
+            Intent updateIntent = new Intent(context, BookmarkThumbnailWidgetService.class);
+            updateIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
+            updateIntent.setData(Uri.parse(updateIntent.toUri(Intent.URI_INTENT_SCHEME)));
+
+            RemoteViews views = new RemoteViews(context.getPackageName(),
+                    R.layout.bookmark_thumbnail_widget);
+            views.setOnClickPendingIntent(R.id.app_shortcut, launchChrome);
+            views.setRemoteAdapter(R.id.bookmarks_list, updateIntent);
+
+            appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetId, R.id.bookmarks_list);
+            Intent ic = new Intent(context, BookmarkWidgetProxy.class);
+            views.setPendingIntentTemplate(R.id.bookmarks_list,
+                    PendingIntent.getBroadcast(context, 0, ic,
+                    PendingIntent.FLAG_UPDATE_CURRENT));
+            appWidgetManager.updateAppWidget(appWidgetId, views);
+        }
+    }
+
+    /**
+     * Build {@link ComponentName} describing this specific
+     * {@link AppWidgetProvider}
+     */
+    private static ComponentName getComponentName(Context context) {
+        return new ComponentName(context, BookmarkThumbnailWidgetProvider.class);
+    }
+}