| /* |
| * Copyright (C) 2012 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.mail.widget; |
| |
| import android.app.PendingIntent; |
| import android.appwidget.AppWidgetManager; |
| import android.content.Context; |
| import android.content.CursorLoader; |
| import android.content.Intent; |
| import android.content.Loader; |
| import android.content.Loader.OnLoadCompleteListener; |
| import android.content.res.Resources; |
| import android.database.Cursor; |
| import android.net.Uri; |
| import android.os.Looper; |
| import android.support.v4.app.TaskStackBuilder; |
| import android.text.SpannableString; |
| import android.text.SpannableStringBuilder; |
| import android.text.TextUtils; |
| import android.text.format.DateUtils; |
| import android.text.style.CharacterStyle; |
| import android.text.style.TextAppearanceSpan; |
| import android.view.View; |
| import android.widget.RemoteViews; |
| import android.widget.RemoteViewsService; |
| |
| import com.android.mail.R; |
| import com.android.mail.browse.SendersView; |
| import com.android.mail.compose.ComposeActivity; |
| import com.android.mail.preferences.MailPrefs; |
| import com.android.mail.providers.Account; |
| import com.android.mail.providers.Conversation; |
| import com.android.mail.providers.Folder; |
| import com.android.mail.providers.UIProvider; |
| import com.android.mail.providers.UIProvider.ConversationListQueryParameters; |
| import com.android.mail.providers.UIProvider.FolderType; |
| import com.android.mail.utils.AccountUtils; |
| import com.android.mail.utils.FolderUri; |
| import com.android.mail.utils.DelayedTaskHandler; |
| import com.android.mail.utils.LogTag; |
| import com.android.mail.utils.LogUtils; |
| import com.android.mail.utils.Utils; |
| |
| import java.util.ArrayList; |
| |
| public class WidgetService extends RemoteViewsService { |
| /** |
| * Lock to avoid race condition between widgets. |
| */ |
| private static final Object sWidgetLock = new Object(); |
| |
| private static final String LOG_TAG = LogTag.getLogTag(); |
| |
| @Override |
| public RemoteViewsFactory onGetViewFactory(Intent intent) { |
| return new MailFactory(getApplicationContext(), intent, this); |
| } |
| |
| protected void configureValidAccountWidget(Context context, RemoteViews remoteViews, |
| int appWidgetId, Account account, final int folderType, final Uri folderUri, |
| final Uri folderConversationListUri, String folderName) { |
| configureValidAccountWidget(context, remoteViews, appWidgetId, account, folderType, |
| folderUri, folderConversationListUri, folderName, WidgetService.class); |
| } |
| |
| /** |
| * Modifies the remoteView for the given account and folder. |
| */ |
| public static void configureValidAccountWidget(Context context, RemoteViews remoteViews, |
| int appWidgetId, Account account, final int folderType, final Uri folderUri, |
| final Uri folderConversationListUri, String folderDisplayName, Class<?> widgetService) { |
| remoteViews.setViewVisibility(R.id.widget_folder, View.VISIBLE); |
| |
| // If the folder or account name are empty, we don't want to overwrite the valid data that |
| // had been saved previously. Since the launcher will save the state of the remote views |
| // we should rely on the fact that valid data has been saved. But we should still log this, |
| // as it shouldn't happen |
| if (TextUtils.isEmpty(folderDisplayName) || TextUtils.isEmpty(account.name)) { |
| LogUtils.e(LOG_TAG, new Error(), |
| "Empty folder or account name. account: %s, folder: %s", |
| account.name, folderDisplayName); |
| } |
| if (!TextUtils.isEmpty(folderDisplayName)) { |
| remoteViews.setTextViewText(R.id.widget_folder, folderDisplayName); |
| } |
| remoteViews.setViewVisibility(R.id.widget_account_noflip, View.VISIBLE); |
| |
| if (!TextUtils.isEmpty(account.name)) { |
| remoteViews.setTextViewText(R.id.widget_account_noflip, account.name); |
| remoteViews.setTextViewText(R.id.widget_account, account.name); |
| } |
| remoteViews.setViewVisibility(R.id.widget_account_unread_flipper, View.GONE); |
| remoteViews.setViewVisibility(R.id.widget_compose, View.VISIBLE); |
| remoteViews.setViewVisibility(R.id.conversation_list, View.VISIBLE); |
| remoteViews.setViewVisibility(R.id.empty_conversation_list, View.VISIBLE); |
| remoteViews.setViewVisibility(R.id.widget_folder_not_synced, View.GONE); |
| remoteViews.setViewVisibility(R.id.widget_configuration, View.GONE); |
| remoteViews.setEmptyView(R.id.conversation_list, R.id.empty_conversation_list); |
| |
| WidgetService.configureValidWidgetIntents(context, remoteViews, appWidgetId, account, |
| folderType, folderUri, folderConversationListUri, folderDisplayName, widgetService); |
| } |
| |
| public static void configureValidWidgetIntents(Context context, RemoteViews remoteViews, |
| int appWidgetId, Account account, final int folderType, final Uri folderUri, |
| final Uri folderConversationListUri, final String folderDisplayName, |
| Class<?> serviceClass) { |
| remoteViews.setViewVisibility(R.id.widget_configuration, View.GONE); |
| |
| |
| // Launch an intent to avoid ANRs |
| final Intent intent = new Intent(context, serviceClass); |
| intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId); |
| intent.putExtra(Utils.EXTRA_ACCOUNT, account.serialize()); |
| intent.putExtra(BaseWidgetProvider.EXTRA_FOLDER_TYPE, folderType); |
| intent.putExtra(BaseWidgetProvider.EXTRA_FOLDER_URI, folderUri); |
| intent.putExtra(BaseWidgetProvider.EXTRA_FOLDER_CONVERSATION_LIST_URI, |
| folderConversationListUri); |
| intent.putExtra(BaseWidgetProvider.EXTRA_FOLDER_DISPLAY_NAME, folderDisplayName); |
| intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME))); |
| remoteViews.setRemoteAdapter(R.id.conversation_list, intent); |
| // Open mail app when click on header |
| final Intent mailIntent = Utils.createViewFolderIntent(context, folderUri, account); |
| PendingIntent clickIntent = PendingIntent.getActivity(context, 0, mailIntent, |
| PendingIntent.FLAG_UPDATE_CURRENT); |
| remoteViews.setOnClickPendingIntent(R.id.widget_header, clickIntent); |
| |
| // On click intent for Compose |
| final Intent composeIntent = new Intent(); |
| composeIntent.setAction(Intent.ACTION_SEND); |
| composeIntent.putExtra(Utils.EXTRA_ACCOUNT, account.serialize()); |
| composeIntent.setData(account.composeIntentUri); |
| composeIntent.putExtra(ComposeActivity.EXTRA_FROM_EMAIL_TASK, true); |
| if (account.composeIntentUri != null) { |
| composeIntent.putExtra(Utils.EXTRA_COMPOSE_URI, account.composeIntentUri); |
| } |
| |
| // Build a task stack that forces the conversation list on the stack before the compose |
| // activity. |
| final TaskStackBuilder taskStackBuilder = TaskStackBuilder.create(context); |
| clickIntent = taskStackBuilder.addNextIntent(mailIntent) |
| .addNextIntent(composeIntent) |
| .getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT); |
| remoteViews.setOnClickPendingIntent(R.id.widget_compose, clickIntent); |
| |
| // On click intent for Conversation |
| final Intent conversationIntent = new Intent(); |
| conversationIntent.setAction(Intent.ACTION_VIEW); |
| clickIntent = PendingIntent.getActivity(context, 0, conversationIntent, |
| PendingIntent.FLAG_UPDATE_CURRENT); |
| remoteViews.setPendingIntentTemplate(R.id.conversation_list, clickIntent); |
| } |
| |
| /** |
| * Persists the information about the specified widget. |
| */ |
| public static void saveWidgetInformation(Context context, int appWidgetId, Account account, |
| final String folderUri) { |
| MailPrefs.get(context).configureWidget(appWidgetId, account, folderUri); |
| } |
| |
| /** |
| * Returns true if this widget id has been configured and saved. |
| */ |
| public boolean isWidgetConfigured(Context context, int appWidgetId, Account account) { |
| return isAccountValid(context, account) && |
| MailPrefs.get(context).isWidgetConfigured(appWidgetId); |
| } |
| |
| protected boolean isAccountValid(Context context, Account account) { |
| if (account != null) { |
| Account[] accounts = AccountUtils.getSyncingAccounts(context); |
| for (Account existing : accounts) { |
| if (existing != null && account.uri.equals(existing.uri)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Remote Views Factory for Mail Widget. |
| */ |
| protected static class MailFactory |
| implements RemoteViewsService.RemoteViewsFactory, OnLoadCompleteListener<Cursor> { |
| private static final int MAX_CONVERSATIONS_COUNT = 25; |
| private static final int MAX_SENDERS_LENGTH = 25; |
| |
| private static final int FOLDER_LOADER_ID = 0; |
| private static final int CONVERSATION_CURSOR_LOADER_ID = 1; |
| private static final int ACCOUNT_LOADER_ID = 2; |
| |
| private final Context mContext; |
| private final int mAppWidgetId; |
| private final Account mAccount; |
| private final int mFolderType; |
| private final Uri mFolderUri; |
| private final Uri mFolderConversationListUri; |
| private final String mFolderDisplayName; |
| private final WidgetConversationListItemViewBuilder mWidgetConversationListItemViewBuilder; |
| private CursorLoader mConversationCursorLoader; |
| private Cursor mConversationCursor; |
| private CursorLoader mFolderLoader; |
| private CursorLoader mAccountLoader; |
| private FolderUpdateHandler mFolderUpdateHandler; |
| private int mFolderCount; |
| private boolean mShouldShowViewMore; |
| private boolean mFolderInformationShown = false; |
| private final WidgetService mService; |
| private String mSendersSplitToken; |
| private String mElidedPaddingToken; |
| private TextAppearanceSpan mUnreadStyle; |
| private TextAppearanceSpan mReadStyle; |
| |
| public MailFactory(Context context, Intent intent, WidgetService service) { |
| mContext = context; |
| mAppWidgetId = intent.getIntExtra( |
| AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID); |
| mAccount = Account.newinstance(intent.getStringExtra(Utils.EXTRA_ACCOUNT)); |
| mFolderType = intent.getIntExtra(WidgetProvider.EXTRA_FOLDER_TYPE, FolderType.DEFAULT); |
| mFolderDisplayName = intent.getStringExtra(WidgetProvider.EXTRA_FOLDER_DISPLAY_NAME); |
| |
| final Uri folderUri = intent.getParcelableExtra(WidgetProvider.EXTRA_FOLDER_URI); |
| final Uri folderConversationListUri = |
| intent.getParcelableExtra(WidgetProvider.EXTRA_FOLDER_CONVERSATION_LIST_URI); |
| if (folderUri != null && folderConversationListUri != null) { |
| mFolderUri = folderUri; |
| mFolderConversationListUri = folderConversationListUri; |
| } else { |
| // This is a old intent created in version UR8 (or earlier). |
| String folderString = intent.getStringExtra(Utils.EXTRA_FOLDER); |
| //noinspection deprecation |
| Folder folder = Folder.fromString(folderString); |
| if (folder != null) { |
| mFolderUri = folder.folderUri.fullUri; |
| mFolderConversationListUri = folder.conversationListUri; |
| } else { |
| mFolderUri = Uri.EMPTY; |
| mFolderConversationListUri = Uri.EMPTY; |
| // this will mark the widget as unconfigured |
| BaseWidgetProvider.updateWidget(mContext, mAppWidgetId, mAccount, mFolderType, |
| mFolderUri, mFolderConversationListUri, mFolderDisplayName); |
| } |
| } |
| |
| mWidgetConversationListItemViewBuilder = new WidgetConversationListItemViewBuilder( |
| context); |
| mService = service; |
| } |
| |
| @Override |
| public void onCreate() { |
| // Save the map between widgetId and account to preference |
| saveWidgetInformation(mContext, mAppWidgetId, mAccount, mFolderUri.toString()); |
| |
| // If the account of this widget has been removed, we want to update the widget to |
| // "Tap to configure" mode. |
| if (!mService.isWidgetConfigured(mContext, mAppWidgetId, mAccount)) { |
| BaseWidgetProvider.updateWidget(mContext, mAppWidgetId, mAccount, mFolderType, |
| mFolderUri, mFolderConversationListUri, mFolderDisplayName); |
| } |
| |
| mFolderInformationShown = false; |
| |
| // We want to limit the query result to 25 and don't want these queries to cause network |
| // traffic |
| // We also want this cursor to receive notifications on all changes. Any change that |
| // the user made locally, the default policy of the UI provider is to not send |
| // notifications for. But in this case, since the widget is not using the |
| // ConversationCursor instance that the UI is using, the widget would not be updated. |
| final Uri.Builder builder = mFolderConversationListUri.buildUpon(); |
| final String maxConversations = Integer.toString(MAX_CONVERSATIONS_COUNT); |
| final Uri widgetConversationQueryUri = builder |
| .appendQueryParameter(ConversationListQueryParameters.LIMIT, maxConversations) |
| .appendQueryParameter(ConversationListQueryParameters.USE_NETWORK, |
| Boolean.FALSE.toString()) |
| .appendQueryParameter(ConversationListQueryParameters.ALL_NOTIFICATIONS, |
| Boolean.TRUE.toString()).build(); |
| |
| final Resources res = mContext.getResources(); |
| mConversationCursorLoader = new CursorLoader(mContext, widgetConversationQueryUri, |
| UIProvider.CONVERSATION_PROJECTION, null, null, null); |
| mConversationCursorLoader.registerListener(CONVERSATION_CURSOR_LOADER_ID, this); |
| mConversationCursorLoader.setUpdateThrottle( |
| res.getInteger(R.integer.widget_refresh_delay_ms)); |
| mConversationCursorLoader.startLoading(); |
| mSendersSplitToken = res.getString(R.string.senders_split_token); |
| mElidedPaddingToken = res.getString(R.string.elided_padding_token); |
| mFolderLoader = new CursorLoader(mContext, mFolderUri, UIProvider.FOLDERS_PROJECTION, |
| null, null, null); |
| mFolderLoader.registerListener(FOLDER_LOADER_ID, this); |
| mFolderUpdateHandler = new FolderUpdateHandler( |
| res.getInteger(R.integer.widget_folder_refresh_delay_ms)); |
| mFolderUpdateHandler.scheduleTask(); |
| |
| mAccountLoader = new CursorLoader(mContext, mAccount.uri, |
| UIProvider.ACCOUNTS_PROJECTION_NO_CAPABILITIES, null, null, null); |
| mAccountLoader.registerListener(ACCOUNT_LOADER_ID, this); |
| mAccountLoader.startLoading(); |
| } |
| |
| @Override |
| public void onDestroy() { |
| synchronized (sWidgetLock) { |
| if (mConversationCursorLoader != null) { |
| mConversationCursorLoader.reset(); |
| mConversationCursorLoader.unregisterListener(this); |
| mConversationCursorLoader = null; |
| } |
| |
| // The Loader should close the cursor, so just unset the reference |
| // to it here. |
| mConversationCursor = null; |
| } |
| |
| if (mFolderLoader != null) { |
| mFolderLoader.reset(); |
| mFolderLoader.unregisterListener(this); |
| mFolderLoader = null; |
| } |
| |
| if (mAccountLoader != null) { |
| mAccountLoader.reset(); |
| mAccountLoader.unregisterListener(this); |
| mAccountLoader = null; |
| } |
| } |
| |
| @Override |
| public void onDataSetChanged() { |
| // We are not using this as signal to requery the cursor. The query will be started |
| // in the following ways: |
| // 1) The Service is started and the loader is started in onCreate() |
| // This will happen when the service is not running, and |
| // AppWidgetManager#notifyAppWidgetViewDataChanged() is called |
| // 2) The service is running, with a previously created loader. The loader is watching |
| // for updates from the existing cursor. If one is seen, the loader will load a new |
| // cursor in the background. |
| mFolderUpdateHandler.scheduleTask(); |
| } |
| |
| /** |
| * Returns the number of items should be shown in the widget list. This method also updates |
| * the boolean that indicates whether the "show more" item should be shown. |
| * @return the number of items to be displayed in the list. |
| */ |
| @Override |
| public int getCount() { |
| synchronized (sWidgetLock) { |
| final int count = getConversationCount(); |
| final int cursorCount = mConversationCursor != null ? |
| mConversationCursor.getCount() : 0; |
| mShouldShowViewMore = count < cursorCount || count < mFolderCount; |
| return count + (mShouldShowViewMore ? 1 : 0); |
| } |
| } |
| |
| /** |
| * Returns the number of conversations that should be shown in the widget. This method |
| * doesn't update the boolean that indicates that the "show more" item should be included |
| * in the list. |
| * @return count |
| */ |
| private int getConversationCount() { |
| synchronized (sWidgetLock) { |
| final int cursorCount = mConversationCursor != null ? |
| mConversationCursor.getCount() : 0; |
| return Math.min(cursorCount, MAX_CONVERSATIONS_COUNT); |
| } |
| } |
| |
| /** |
| * @return the {@link RemoteViews} for a specific position in the list. |
| */ |
| @Override |
| public RemoteViews getViewAt(int position) { |
| synchronized (sWidgetLock) { |
| // "View more conversations" view. |
| if (mConversationCursor == null || mConversationCursor.isClosed() |
| || (mShouldShowViewMore && position >= getConversationCount())) { |
| return getViewMoreConversationsView(); |
| } |
| |
| if (!mConversationCursor.moveToPosition(position)) { |
| // If we ever fail to move to a position, return the |
| // "View More conversations" |
| // view. |
| LogUtils.e(LOG_TAG, "Failed to move to position %d in the cursor.", position); |
| return getViewMoreConversationsView(); |
| } |
| |
| Conversation conversation = new Conversation(mConversationCursor); |
| // Split the senders and status from the instructions. |
| SpannableStringBuilder senderBuilder = new SpannableStringBuilder(); |
| |
| ArrayList<SpannableString> senders = new ArrayList<SpannableString>(); |
| SendersView.format(mContext, conversation.conversationInfo, "", |
| MAX_SENDERS_LENGTH, senders, null, null, mAccount.name, true); |
| senderBuilder = ellipsizeStyledSenders(senders); |
| |
| // Get styled date. |
| CharSequence date = DateUtils.getRelativeTimeSpanString(mContext, |
| conversation.dateMs); |
| |
| final int ignoreFolderType; |
| if ((mFolderType & FolderType.INBOX) != 0) { |
| ignoreFolderType = FolderType.INBOX; |
| } else { |
| ignoreFolderType = -1; |
| } |
| |
| // Load up our remote view. |
| RemoteViews remoteViews = mWidgetConversationListItemViewBuilder.getStyledView(date, |
| conversation, new FolderUri(mFolderUri), ignoreFolderType, |
| senderBuilder, filterTag(conversation.subject)); |
| |
| // On click intent. |
| remoteViews.setOnClickFillInIntent(R.id.widget_conversation_list_item, |
| Utils.createViewConversationIntent(mContext, conversation, mFolderUri, |
| mAccount)); |
| |
| return remoteViews; |
| } |
| } |
| |
| private SpannableStringBuilder ellipsizeStyledSenders( |
| ArrayList<SpannableString> styledSenders) { |
| SpannableStringBuilder builder = new SpannableStringBuilder(); |
| SpannableString prevSender = null; |
| for (SpannableString sender : styledSenders) { |
| if (sender == null) { |
| LogUtils.e(LOG_TAG, "null sender while iterating over styledSenders"); |
| continue; |
| } |
| CharacterStyle[] spans = sender.getSpans(0, sender.length(), CharacterStyle.class); |
| if (SendersView.sElidedString.equals(sender.toString())) { |
| prevSender = sender; |
| sender = copyStyles(spans, mElidedPaddingToken + sender + mElidedPaddingToken); |
| } else if (builder.length() > 0 |
| && (prevSender == null || !SendersView.sElidedString.equals(prevSender |
| .toString()))) { |
| prevSender = sender; |
| sender = copyStyles(spans, mSendersSplitToken + sender); |
| } else { |
| prevSender = sender; |
| } |
| builder.append(sender); |
| } |
| return builder; |
| } |
| |
| private static SpannableString copyStyles(CharacterStyle[] spans, CharSequence newText) { |
| SpannableString s = new SpannableString(newText); |
| if (spans != null && spans.length > 0) { |
| s.setSpan(spans[0], 0, s.length(), 0); |
| } |
| return s; |
| } |
| |
| /** |
| * @return the "View more conversations" view. |
| */ |
| private RemoteViews getViewMoreConversationsView() { |
| RemoteViews view = new RemoteViews(mContext.getPackageName(), R.layout.widget_loading); |
| view.setTextViewText( |
| R.id.loading_text, mContext.getText(R.string.view_more_conversations)); |
| view.setOnClickFillInIntent(R.id.widget_loading, |
| Utils.createViewFolderIntent(mContext, mFolderUri, mAccount)); |
| return view; |
| } |
| |
| @Override |
| public RemoteViews getLoadingView() { |
| RemoteViews view = new RemoteViews(mContext.getPackageName(), R.layout.widget_loading); |
| view.setTextViewText( |
| R.id.loading_text, mContext.getText(R.string.loading_conversation)); |
| return view; |
| } |
| |
| @Override |
| public int getViewTypeCount() { |
| return 2; |
| } |
| |
| @Override |
| public long getItemId(int position) { |
| return position; |
| } |
| |
| @Override |
| public boolean hasStableIds() { |
| return false; |
| } |
| |
| @Override |
| public void onLoadComplete(Loader<Cursor> loader, Cursor data) { |
| final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(mContext); |
| final RemoteViews remoteViews = |
| new RemoteViews(mContext.getPackageName(), R.layout.widget); |
| |
| if (!mService.isWidgetConfigured(mContext, mAppWidgetId, mAccount)) { |
| BaseWidgetProvider.updateWidget(mContext, mAppWidgetId, mAccount, mFolderType, |
| mFolderUri, mFolderConversationListUri, mFolderDisplayName); |
| } |
| |
| if (loader == mFolderLoader) { |
| if (!isDataValid(data)) { |
| // Our folder may have disappeared on us |
| BaseWidgetProvider.updateWidget(mContext, mAppWidgetId, mAccount, mFolderType, |
| mFolderUri, mFolderConversationListUri, mFolderDisplayName); |
| |
| return; |
| } |
| |
| final int unreadCount = data.getInt(UIProvider.FOLDER_UNREAD_COUNT_COLUMN); |
| final String folderName = data.getString(UIProvider.FOLDER_NAME_COLUMN); |
| mFolderCount = data.getInt(UIProvider.FOLDER_TOTAL_COUNT_COLUMN); |
| |
| if (!mFolderInformationShown && !TextUtils.isEmpty(folderName) && |
| !TextUtils.isEmpty(mAccount.name)) { |
| // We want to do a full update to the widget at least once, as the widget |
| // manager doesn't cache the state of the remote views when doing a partial |
| // widget update. This causes the folder name to be shown as blank if the state |
| // of the widget is restored. |
| mService.configureValidAccountWidget(mContext, remoteViews, mAppWidgetId, |
| mAccount, mFolderType, mFolderUri, mFolderConversationListUri, |
| folderName); |
| appWidgetManager.updateAppWidget(mAppWidgetId, remoteViews); |
| mFolderInformationShown = true; |
| } |
| |
| // There is no reason to overwrite a valid non-null folder name with an empty string |
| if (!TextUtils.isEmpty(folderName)) { |
| remoteViews.setViewVisibility(R.id.widget_folder, View.VISIBLE); |
| remoteViews.setTextViewText(R.id.widget_folder, folderName); |
| } else { |
| LogUtils.e(LOG_TAG, "Empty folder name"); |
| } |
| if (!TextUtils.isEmpty(mAccount.name)) { |
| remoteViews.setTextViewText(R.id.widget_account_noflip, mAccount.name); |
| remoteViews.setTextViewText(R.id.widget_account, mAccount.name); |
| } |
| |
| final CharSequence unreadCountString = Utils |
| .getUnreadMessageString(mContext.getApplicationContext(), unreadCount); |
| |
| // If there are 0 unread messages, hide the unread count text view. |
| // Otherwise, show the unread count. |
| if (unreadCount == 0) { |
| remoteViews.setViewVisibility(R.id.widget_account_noflip, View.VISIBLE); |
| remoteViews.setViewVisibility(R.id.widget_account_unread_flipper, View.GONE); |
| } else { |
| remoteViews.setViewVisibility(R.id.widget_account_noflip, View.GONE); |
| remoteViews.setViewVisibility(R.id.widget_account_unread_flipper, View.VISIBLE); |
| remoteViews.setTextViewText(R.id.widget_unread_count, unreadCountString); |
| } |
| |
| appWidgetManager.partiallyUpdateAppWidget(mAppWidgetId, remoteViews); |
| } else if (loader == mConversationCursorLoader) { |
| // We want to cache the new cursor |
| synchronized (sWidgetLock) { |
| if (!isDataValid(data)) { |
| mConversationCursor = null; |
| } else { |
| mConversationCursor = data; |
| } |
| } |
| |
| appWidgetManager.notifyAppWidgetViewDataChanged(mAppWidgetId, |
| R.id.conversation_list); |
| |
| if (mConversationCursor == null || mConversationCursor.getCount() == 0) { |
| remoteViews.setTextViewText(R.id.empty_conversation_list, |
| mContext.getString(R.string.empty_folder)); |
| appWidgetManager.partiallyUpdateAppWidget(mAppWidgetId, remoteViews); |
| } |
| } else if (loader == mAccountLoader) { |
| BaseWidgetProvider.updateWidget(mContext, mAppWidgetId, mAccount, mFolderType, |
| mFolderUri, mFolderConversationListUri, mFolderDisplayName); |
| } |
| } |
| |
| /** |
| * Returns a boolean indicating whether this cursor has valid data. |
| * Note: This seeks to the first position in the cursor |
| */ |
| private static boolean isDataValid(Cursor cursor) { |
| return cursor != null && !cursor.isClosed() && cursor.moveToFirst(); |
| } |
| |
| /** |
| * If the subject contains the tag of a mailing-list (text surrounded with []), return the |
| * subject with that tag ellipsized, e.g. "[android-gmail-team] Hello" -> "[andr...] Hello" |
| */ |
| private static String filterTag(String subject) { |
| String result = subject; |
| if (subject.length() > 0 && subject.charAt(0) == '[') { |
| int end = subject.indexOf(']'); |
| if (end > 0) { |
| String tag = subject.substring(1, end); |
| result = "[" + Utils.ellipsize(tag, 7) + "]" + subject.substring(end + 1); |
| } |
| } |
| |
| return result; |
| } |
| |
| /** |
| * A {@link DelayedTaskHandler} to throttle folder update to a reasonable rate. |
| */ |
| private class FolderUpdateHandler extends DelayedTaskHandler { |
| public FolderUpdateHandler(int refreshDelay) { |
| super(Looper.myLooper(), refreshDelay); |
| } |
| |
| @Override |
| protected void performTask() { |
| // Start the loader. The cached data will be returned if present. |
| if (mFolderLoader != null) { |
| mFolderLoader.startLoading(); |
| } |
| } |
| } |
| } |
| } |
