| /* |
| * Copyright (C) 2012 Google Inc. |
| * Licensed to 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.ui; |
| |
| import android.app.Activity; |
| import android.app.ListFragment; |
| import android.content.res.Resources; |
| import android.database.DataSetObserver; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.ViewGroup.MarginLayoutParams; |
| import android.widget.AdapterView; |
| import android.widget.AdapterView.OnItemLongClickListener; |
| import android.widget.ListView; |
| import android.widget.TextView; |
| |
| import com.android.mail.ConversationListContext; |
| import com.android.mail.R; |
| import com.android.mail.browse.ToggleableItem; |
| import com.android.mail.browse.ConversationCursor; |
| import com.android.mail.browse.ConversationItemView; |
| import com.android.mail.browse.ConversationItemViewModel; |
| import com.android.mail.browse.ConversationListFooterView; |
| import com.android.mail.providers.Account; |
| import com.android.mail.providers.AccountObserver; |
| import com.android.mail.providers.Conversation; |
| import com.android.mail.providers.Folder; |
| import com.android.mail.providers.Settings; |
| import com.android.mail.providers.UIProvider; |
| import com.android.mail.providers.UIProvider.AccountCapabilities; |
| import com.android.mail.providers.UIProvider.FolderCapabilities; |
| import com.android.mail.providers.UIProvider.FolderType; |
| import com.android.mail.providers.UIProvider.Swipe; |
| import com.android.mail.ui.SwipeableListView.ListItemSwipedListener; |
| import com.android.mail.ui.SwipeableListView.ListItemsRemovedListener; |
| import com.android.mail.ui.ViewMode.ModeChangeListener; |
| import com.android.mail.utils.LogTag; |
| import com.android.mail.utils.LogUtils; |
| import com.android.mail.utils.Utils; |
| |
| import java.util.Collection; |
| |
| /** |
| * The conversation list UI component. |
| */ |
| public final class ConversationListFragment extends ListFragment implements |
| OnItemLongClickListener, ModeChangeListener, ListItemSwipedListener { |
| /** Key used to pass data to {@link ConversationListFragment}. */ |
| private static final String CONVERSATION_LIST_KEY = "conversation-list"; |
| /** Key used to keep track of the scroll state of the list. */ |
| private static final String LIST_STATE_KEY = "list-state"; |
| |
| private static final String LOG_TAG = LogTag.getLogTag(); |
| |
| // True if we are on a tablet device |
| private static boolean mTabletDevice; |
| |
| /** |
| * Frequency of update of timestamps. Initialized in |
| * {@link #onCreate(Bundle)} and final afterwards. |
| */ |
| private static int TIMESTAMP_UPDATE_INTERVAL = 0; |
| |
| private ControllableActivity mActivity; |
| |
| // Control state. |
| private ConversationListCallbacks mCallbacks; |
| |
| private final Handler mHandler = new Handler(); |
| |
| // The internal view objects. |
| private SwipeableListView mListView; |
| |
| private TextView mSearchResultCountTextView; |
| private TextView mSearchStatusTextView; |
| |
| private View mSearchStatusView; |
| |
| /** |
| * Current Account being viewed |
| */ |
| private Account mAccount; |
| /** |
| * Current folder being viewed. |
| */ |
| private Folder mFolder; |
| |
| /** |
| * A simple method to update the timestamps of conversations periodically. |
| */ |
| private Runnable mUpdateTimestampsRunnable = null; |
| |
| private ConversationListContext mViewContext; |
| |
| private AnimatedAdapter mListAdapter; |
| |
| private ConversationListFooterView mFooterView; |
| private View mEmptyView; |
| private ErrorListener mErrorListener; |
| private DataSetObserver mFolderObserver; |
| private DataSetObserver mConversationListStatusObserver; |
| |
| private ConversationSelectionSet mSelectedSet; |
| private final AccountObserver mAccountObserver = new AccountObserver() { |
| @Override |
| public void onChanged(Account newAccount) { |
| mAccount = newAccount; |
| setSwipeAction(); |
| } |
| }; |
| private ConversationUpdater mUpdater; |
| /** Hash of the Conversation Cursor we last obtained from the controller. */ |
| private int mConversationCursorHash; |
| |
| /** |
| * Constructor needs to be public to handle orientation changes and activity |
| * lifecycle events. |
| */ |
| public ConversationListFragment() { |
| super(); |
| } |
| |
| // update the pager title strip as the Folder's conversation count changes |
| private class FolderObserver extends DataSetObserver { |
| @Override |
| public void onChanged() { |
| if (mActivity == null) { |
| return; |
| } |
| final FolderController controller = mActivity.getFolderController(); |
| if (controller == null) { |
| return; |
| } |
| onFolderUpdated(controller.getFolder()); |
| } |
| } |
| |
| private class ConversationListStatusObserver extends DataSetObserver { |
| @Override |
| public void onChanged() { |
| onConversationListStatusUpdated(); |
| } |
| } |
| |
| /** |
| * Creates a new instance of {@link ConversationListFragment}, initialized |
| * to display conversation list context. |
| */ |
| public static ConversationListFragment newInstance(ConversationListContext viewContext) { |
| ConversationListFragment fragment = new ConversationListFragment(); |
| Bundle args = new Bundle(); |
| args.putBundle(CONVERSATION_LIST_KEY, viewContext.toBundle()); |
| fragment.setArguments(args); |
| return fragment; |
| } |
| |
| /** |
| * Show the header if the current conversation list is showing search |
| * results. |
| */ |
| void configureSearchResultHeader() { |
| if (mActivity == null) { |
| return; |
| } |
| // Only show the header if the context is for a search result |
| final Resources res = getResources(); |
| final boolean showHeader = ConversationListContext.isSearchResult(mViewContext); |
| // TODO(viki): This code contains intimate understanding of the view. |
| // Much of this logic |
| // needs to reside in a separate class that handles the text view in |
| // isolation. Then, |
| // that logic can be reused in other fragments. |
| if (showHeader) { |
| mSearchStatusTextView.setText(res.getString(R.string.search_results_searching_header)); |
| // Initially reset the count |
| mSearchResultCountTextView.setText(""); |
| } |
| mSearchStatusView.setVisibility(showHeader ? View.VISIBLE : View.GONE); |
| int marginTop = showHeader ? (int) res.getDimension(R.dimen.notification_view_height) : 0; |
| MarginLayoutParams layoutParams = (MarginLayoutParams) mListView.getLayoutParams(); |
| layoutParams.topMargin = marginTop; |
| mListView.setLayoutParams(layoutParams); |
| } |
| |
| /** |
| * Show the header if the current conversation list is showing search |
| * results. |
| */ |
| private void updateSearchResultHeader(int count) { |
| if (mActivity == null) { |
| return; |
| } |
| // Only show the header if the context is for a search result |
| final Resources res = getResources(); |
| final boolean showHeader = ConversationListContext.isSearchResult(mViewContext); |
| if (showHeader) { |
| mSearchStatusTextView.setText(res.getString(R.string.search_results_header)); |
| mSearchResultCountTextView |
| .setText(res.getString(R.string.search_results_loaded, count)); |
| } |
| } |
| |
| /** |
| * Initializes all internal state for a rendering. |
| */ |
| private void initializeUiForFirstDisplay() { |
| // TODO(mindyp): find some way to make the notification container more |
| // re-usable. |
| // TODO(viki): refactor according to comment in |
| // configureSearchResultHandler() |
| mSearchStatusView = mActivity.findViewById(R.id.search_status_view); |
| mSearchStatusTextView = (TextView) mActivity.findViewById(R.id.search_status_text_view); |
| mSearchResultCountTextView = (TextView) mActivity |
| .findViewById(R.id.search_result_count_view); |
| } |
| |
| @Override |
| public void onActivityCreated(Bundle savedInstanceState) { |
| super.onActivityCreated(savedInstanceState); |
| // Strictly speaking, we get back an android.app.Activity from |
| // getActivity. However, the |
| // only activity creating a ConversationListContext is a MailActivity |
| // which is of type |
| // ControllableActivity, so this cast should be safe. If this cast |
| // fails, some other |
| // activity is creating ConversationListFragments. This activity must be |
| // of type |
| // ControllableActivity. |
| final Activity activity = getActivity(); |
| if (!(activity instanceof ControllableActivity)) { |
| LogUtils.e(LOG_TAG, "ConversationListFragment expects only a ControllableActivity to" |
| + "create it. Cannot proceed."); |
| } |
| mActivity = (ControllableActivity) activity; |
| // Since we now have a controllable activity, load the account from it, |
| // and register for |
| // future account changes. |
| mAccount = mAccountObserver.initialize(mActivity.getAccountController()); |
| mCallbacks = mActivity.getListHandler(); |
| mErrorListener = mActivity.getErrorListener(); |
| // Start off with the current state of the folder being viewed. |
| mFooterView = (ConversationListFooterView) LayoutInflater.from( |
| mActivity.getActivityContext()).inflate(R.layout.conversation_list_footer_view, |
| null); |
| mFooterView.setClickListener(mActivity); |
| final ConversationCursor conversationCursor = getConversationListCursor(); |
| mListAdapter = new AnimatedAdapter(mActivity.getApplicationContext(), -1, |
| conversationCursor, mActivity.getSelectedSet(), mActivity, mListView); |
| mListAdapter.addFooter(mFooterView); |
| mListView.setAdapter(mListAdapter); |
| mSelectedSet = mActivity.getSelectedSet(); |
| mListView.setSelectionSet(mSelectedSet); |
| mListAdapter.hideFooter(); |
| mFolderObserver = new FolderObserver(); |
| mActivity.getFolderController().registerFolderObserver(mFolderObserver); |
| mConversationListStatusObserver = new ConversationListStatusObserver(); |
| mUpdater = mActivity.getConversationUpdater(); |
| mUpdater.registerConversationListObserver(mConversationListStatusObserver); |
| mTabletDevice = Utils.useTabletUI(mActivity.getApplicationContext()); |
| initializeUiForFirstDisplay(); |
| configureSearchResultHeader(); |
| // The onViewModeChanged callback doesn't get called when the mode |
| // object is created, so |
| // force setting the mode manually this time around. |
| onViewModeChanged(mActivity.getViewMode().getMode()); |
| mActivity.getViewMode().addListener(this); |
| |
| if (mActivity.isFinishing()) { |
| // Activity is finishing, just bail. |
| return; |
| } |
| mConversationCursorHash = (conversationCursor == null) ? 0 : conversationCursor.hashCode(); |
| // Belt and suspenders here; make sure we do any necessary sync of the |
| // ConversationCursor |
| if (conversationCursor != null && conversationCursor.isRefreshReady()) { |
| conversationCursor.sync(); |
| } |
| |
| // Show list and start loading list. |
| showList(); |
| ToastBarOperation pendingOp = mActivity.getPendingToastOperation(); |
| if (pendingOp != null) { |
| // Clear the pending operation |
| mActivity.setPendingToastOperation(null); |
| mActivity.onUndoAvailable(pendingOp); |
| } |
| } |
| |
| public AnimatedAdapter getAnimatedAdapter() { |
| return mListAdapter; |
| } |
| |
| @Override |
| public void onCreate(Bundle savedState) { |
| super.onCreate(savedState); |
| |
| // Initialize fragment constants from resources |
| final Resources res = getResources(); |
| TIMESTAMP_UPDATE_INTERVAL = res.getInteger(R.integer.timestamp_update_interval); |
| mUpdateTimestampsRunnable = new Runnable() { |
| @Override |
| public void run() { |
| mListView.invalidateViews(); |
| mHandler.postDelayed(mUpdateTimestampsRunnable, TIMESTAMP_UPDATE_INTERVAL); |
| } |
| }; |
| |
| // Get the context from the arguments |
| final Bundle args = getArguments(); |
| mViewContext = ConversationListContext.forBundle(args.getBundle(CONVERSATION_LIST_KEY)); |
| mAccount = mViewContext.account; |
| |
| setRetainInstance(false); |
| } |
| |
| @Override |
| public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedState) { |
| View rootView = inflater.inflate(R.layout.conversation_list, null); |
| mEmptyView = rootView.findViewById(R.id.empty_view); |
| mListView = (SwipeableListView) rootView.findViewById(android.R.id.list); |
| mListView.setHeaderDividersEnabled(false); |
| // Choice mode here represents the current conversation only. CAB mode does not rely on the |
| // platform: it is a local variable within conversation items. |
| mListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); |
| mListView.setOnItemLongClickListener(this); |
| mListView.enableSwipe(mAccount.supportsCapability(AccountCapabilities.UNDO)); |
| mListView.setSwipedListener(this); |
| |
| // Restore the list state |
| if (savedState != null && savedState.containsKey(LIST_STATE_KEY)) { |
| mListView.onRestoreInstanceState(savedState.getParcelable(LIST_STATE_KEY)); |
| // TODO: find a better way to unset the selected item when restoring |
| mListView.clearChoices(); |
| } |
| return rootView; |
| } |
| |
| @Override |
| public void onDestroy() { |
| super.onDestroy(); |
| } |
| |
| @Override |
| public void onDestroyView() { |
| |
| // Clear the list's adapter |
| mListAdapter.destroy(); |
| mListView.setAdapter(null); |
| |
| mActivity.unsetViewModeListener(this); |
| if (mFolderObserver != null) { |
| mActivity.getFolderController().unregisterFolderObserver(mFolderObserver); |
| mFolderObserver = null; |
| } |
| if (mConversationListStatusObserver != null) { |
| mUpdater.unregisterConversationListObserver(mConversationListStatusObserver); |
| mConversationListStatusObserver = null; |
| } |
| mAccountObserver.unregisterAndDestroy(); |
| super.onDestroyView(); |
| } |
| |
| /** |
| * There are three binary variables, which determine what we do with a |
| * message. checkbEnabled: Whether check boxes are enabled or not (forced |
| * true on tablet) cabModeOn: Whether CAB mode is currently on or not. |
| * pressType: long or short tap (There is a third possibility: phone or |
| * tablet, but they have <em>identical</em> behavior) The matrix of |
| * possibilities is: |
| * <p> |
| * Long tap: Always toggle selection of conversation. If CAB mode is not |
| * started, then start it. |
| * <pre> |
| * | Checkboxes | No Checkboxes |
| * ----------+------------+--------------- |
| * CAB mode | Select | Select |
| * List mode | Select | Select |
| * |
| * </pre> |
| * |
| * Reference: http://b/issue?id=6392199 |
| * <p> |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) { |
| // Ignore anything that is not a conversation item. Could be a footer. |
| if (!(view instanceof ConversationItemView)) { |
| return true; |
| } |
| ((ConversationItemView) view).toggleCheckMarkOrBeginDrag(); |
| return true; |
| } |
| |
| /** |
| * See the comment for |
| * {@link #onItemLongClick(AdapterView, View, int, long)}. |
| * <p> |
| * Short tap behavior: |
| * |
| * <pre> |
| * | Checkboxes | No Checkboxes |
| * ----------+------------+--------------- |
| * CAB mode | Peek | Select |
| * List mode | Peek | Peek |
| * </pre> |
| * |
| * Reference: http://b/issue?id=6392199 |
| * <p> |
| * {@inheritDoc} |
| */ |
| @Override |
| public void onListItemClick(ListView l, View view, int position, long id) { |
| // Ignore anything that is not a conversation item. Could be a footer. |
| // If we are using a keyboard, the highlighted item is the parent; |
| // otherwise, this is a direct call from the ConverationItemView |
| if (!(view instanceof ToggleableItem)) { |
| return; |
| } |
| if (mAccount.settings.hideCheckboxes && !mSelectedSet.isEmpty()) { |
| ToggleableItem v = (ToggleableItem) view; |
| v.toggleCheckMarkOrBeginDrag(); |
| } else { |
| viewConversation(position); |
| } |
| // When a new list item is clicked, commit any existing leave behind |
| // items. Wait until we have opened the desired conversation to cause |
| // any position changes. |
| commitDestructiveActions(Utils.useTabletUI(mActivity.getActivityContext())); |
| } |
| |
| @Override |
| public void onPause() { |
| super.onPause(); |
| } |
| |
| @Override |
| public void onSaveInstanceState(Bundle outState) { |
| super.onSaveInstanceState(outState); |
| if (mListView != null) { |
| outState.putParcelable(LIST_STATE_KEY, mListView.onSaveInstanceState()); |
| } |
| } |
| |
| @Override |
| public void onStart() { |
| super.onStart(); |
| mHandler.postDelayed(mUpdateTimestampsRunnable, TIMESTAMP_UPDATE_INTERVAL); |
| } |
| |
| @Override |
| public void onStop() { |
| super.onStop(); |
| mHandler.removeCallbacks(mUpdateTimestampsRunnable); |
| } |
| |
| @Override |
| public void onViewModeChanged(int newMode) { |
| // Change the divider based on view mode. |
| if (mTabletDevice) { |
| if (newMode == ViewMode.CONVERSATION) { |
| mListView.setBackgroundResource(R.drawable.panel_conversation_leftstroke); |
| } else if (newMode == ViewMode.CONVERSATION_LIST |
| || newMode == ViewMode.SEARCH_RESULTS_LIST) { |
| // There are no selected conversations when in conversation |
| // list mode. |
| mListView.clearChoices(); |
| mListView.setBackgroundDrawable(null); |
| } |
| } else { |
| mListView.setBackgroundDrawable(null); |
| } |
| if (mFooterView != null) { |
| mFooterView.onViewModeChanged(newMode); |
| } |
| } |
| |
| /** |
| * Handles a request to show a new conversation list, either from a search |
| * query or for viewing a folder. This will initiate a data load, and hence |
| * must be called on the UI thread. |
| */ |
| private void showList() { |
| mListView.setEmptyView(null); |
| onFolderUpdated(mActivity.getFolderController().getFolder()); |
| onConversationListStatusUpdated(); |
| } |
| |
| /** |
| * View the message at the given position. |
| * @param position |
| */ |
| protected void viewConversation(int position) { |
| LogUtils.d(LOG_TAG, "ConversationListFragment.viewConversation(%d)", position); |
| setSelected(position); |
| final ConversationCursor cursor = getConversationListCursor(); |
| if (cursor != null && cursor.moveToPosition(position)) { |
| final Conversation conv = new Conversation(cursor); |
| conv.position = position; |
| mCallbacks.onConversationSelected(conv, false /* inLoaderCallbacks */); |
| } |
| } |
| |
| |
| public void setSelected(int position, boolean different) { |
| if (different) { |
| mListView.smoothScrollToPosition(position); |
| } |
| mListView.setItemChecked(position, true); |
| } |
| |
| /** |
| * Sets the selected position (the highlighted conversation) to the position |
| * provided here. |
| * @param position |
| */ |
| protected final void setSelected(int position) { |
| setSelected(position, true); |
| } |
| |
| private ConversationCursor getConversationListCursor() { |
| return mCallbacks != null ? mCallbacks.getConversationListCursor() : null; |
| } |
| |
| /** |
| * Request a refresh of the list. No sync is carried out and none is |
| * promised. |
| */ |
| public void requestListRefresh() { |
| mListAdapter.notifyDataSetChanged(); |
| } |
| |
| /** |
| * Change the UI to delete the conversations provided and then call the |
| * {@link DestructiveAction} provided here <b>after</b> the UI has been |
| * updated. |
| * @param conversations |
| * @param action |
| */ |
| public void requestDelete(int actionId, final Collection<Conversation> conversations, |
| final DestructiveAction action) { |
| for (Conversation conv : conversations) { |
| conv.localDeleteOnUpdate = true; |
| } |
| final ListItemsRemovedListener listener = new ListItemsRemovedListener() { |
| @Override |
| public void onListItemsRemoved() { |
| action.performAction(); |
| } |
| }; |
| final SwipeableListView listView = (SwipeableListView) getListView(); |
| if (listView.getSwipeAction() == actionId) { |
| listView.destroyItems(conversations, listener); |
| return; |
| } |
| // Delete the local delete items (all for now) and when done, |
| // update... |
| mListAdapter.delete(conversations, listener); |
| } |
| |
| public void onFolderUpdated(Folder folder) { |
| mFolder = folder; |
| setSwipeAction(); |
| if (mFolder == null) { |
| return; |
| } |
| mListAdapter.setFolder(mFolder); |
| mFooterView.setFolder(mFolder); |
| if (!mFolder.wasSyncSuccessful()) { |
| mErrorListener.onError(mFolder, false); |
| } |
| |
| // Notify of changes to the Folder. |
| onFolderStatusUpdated(); |
| |
| // Blow away conversation items cache. |
| ConversationItemViewModel.onFolderUpdated(mFolder); |
| } |
| |
| /** |
| * Updates the footer visibility and updates the conversation cursor |
| */ |
| public void onConversationListStatusUpdated() { |
| final ConversationCursor cursor = getConversationListCursor(); |
| final boolean showFooter = cursor != null && mFooterView.updateStatus(cursor); |
| // Update the folder status, in case the cursor could affect it. |
| onFolderStatusUpdated(); |
| mListAdapter.setFooterVisibility(showFooter); |
| |
| // Also change the cursor here. |
| onCursorUpdated(); |
| } |
| |
| private void onFolderStatusUpdated() { |
| final ConversationCursor cursor = getConversationListCursor(); |
| Bundle extras = cursor != null ? cursor.getExtras() : Bundle.EMPTY; |
| int error = extras.containsKey(UIProvider.CursorExtraKeys.EXTRA_ERROR) ? |
| extras.getInt(UIProvider.CursorExtraKeys.EXTRA_ERROR) |
| : UIProvider.LastSyncResult.SUCCESS; |
| int status = extras.getInt(UIProvider.CursorExtraKeys.EXTRA_STATUS); |
| // We want to update the UI with this informaion if either we are loaded or complete, or |
| // we have a folder with a non-0 count. |
| final int folderCount = mFolder != null ? mFolder.totalCount : 0; |
| if (error == UIProvider.LastSyncResult.SUCCESS |
| && (status == UIProvider.CursorStatus.LOADED |
| || status == UIProvider.CursorStatus.COMPLETE) || folderCount > 0) { |
| updateSearchResultHeader(folderCount); |
| if (folderCount == 0) { |
| mListView.setEmptyView(mEmptyView); |
| } |
| } |
| } |
| |
| private void setSwipeAction() { |
| int swipeSetting = Settings.getSwipeSetting(mAccount.settings); |
| if (swipeSetting == Swipe.DISABLED |
| || !mAccount.supportsCapability(AccountCapabilities.UNDO) |
| || (mFolder != null && mFolder.isTrash())) { |
| mListView.enableSwipe(false); |
| } else { |
| int action; |
| if (ConversationListContext.isSearchResult(mViewContext) |
| || (mFolder != null && mFolder.type == FolderType.SPAM)) { |
| action = R.id.delete; |
| } else if (mFolder == null) { |
| action = R.id.remove_folder; |
| } else { |
| // We have enough information to respect user settings. |
| switch (swipeSetting) { |
| case Swipe.ARCHIVE: |
| if (mAccount.supportsCapability(AccountCapabilities.ARCHIVE)) { |
| if (mFolder.supportsCapability(FolderCapabilities.ARCHIVE)) { |
| action = R.id.archive; |
| break; |
| } else if (mFolder.supportsCapability |
| (FolderCapabilities.CAN_ACCEPT_MOVED_MESSAGES)) { |
| action = R.id.remove_folder; |
| break; |
| } |
| } |
| case Swipe.DELETE: |
| default: |
| action = R.id.delete; |
| break; |
| } |
| } |
| mListView.setSwipeAction(action); |
| } |
| mListView.setCurrentFolder(mFolder); |
| } |
| |
| /** |
| * Changes the conversation cursor in the list and sets selected position if none is set. |
| */ |
| private void onCursorUpdated() { |
| if (mCallbacks == null || mListAdapter == null) { |
| return; |
| } |
| // Check against the previous cursor here and see if they are the same. If they are, then |
| // do a notifyDataSetChanged. |
| final ConversationCursor newCursor = mCallbacks.getConversationListCursor(); |
| mListAdapter.swapCursor(newCursor); |
| // When the conversation cursor is *updated*, we get back the same instance. In that |
| // situation, CursorAdapter.swapCursor() silently returns, without forcing a |
| // notifyDataSetChanged(). So let's force a call to notifyDataSetChanged, since an updated |
| // cursor means that the dataset has changed. |
| final int newCursorHash = (newCursor == null) ? 0 : newCursor.hashCode(); |
| if (mConversationCursorHash == newCursorHash && mConversationCursorHash != 0) { |
| mListAdapter.notifyDataSetChanged(); |
| } |
| mConversationCursorHash = newCursorHash; |
| // If a current conversation is available, and none is selected in the list, then ask |
| // the list to select the current conversation. |
| final Conversation conv = mCallbacks.getCurrentConversation(); |
| if (conv == null) { |
| return; |
| } |
| if (mListView.getCheckedItemPosition() == -1) { |
| setSelected(conv.position); |
| } |
| } |
| |
| public void commitDestructiveActions(boolean animate) { |
| if (mListView != null) { |
| mListView.commitDestructiveActions(animate); |
| |
| } |
| } |
| |
| @Override |
| public void onListItemSwiped(Collection<Conversation> conversations) { |
| mUpdater.showNextConversation(conversations); |
| } |
| } |