Java tutorial
/* * Copyright (C) 2015 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.messaging.ui.conversationlist; import android.support.v4.util.ArrayMap; import android.text.TextUtils; import android.view.ActionMode; import android.view.ActionMode.Callback; import android.view.Menu; import android.view.MenuItem; import com.android.messaging.R; import com.android.messaging.datamodel.data.ConversationListData; import com.android.messaging.datamodel.data.ConversationListItemData; import com.android.messaging.util.Assert; import java.util.Collection; import java.util.HashSet; public class MultiSelectActionModeCallback implements Callback { private HashSet<String> mBlockedSet; public interface Listener { void onActionBarDelete(Collection<SelectedConversation> conversations); void onActionBarArchive(Iterable<SelectedConversation> conversations, boolean isToArchive); void onActionBarNotification(Iterable<SelectedConversation> conversations, boolean isNotificationOn); void onActionBarAddContact(final SelectedConversation conversation); void onActionBarBlock(final SelectedConversation conversation); void onActionBarHome(); } static class SelectedConversation { public final String conversationId; public final long timestamp; public final String icon; public final String otherParticipantNormalizedDestination; public final CharSequence participantLookupKey; public final boolean isGroup; public final boolean isArchived; public final boolean notificationEnabled; public SelectedConversation(ConversationListItemData data) { conversationId = data.getConversationId(); timestamp = data.getTimestamp(); icon = data.getIcon(); otherParticipantNormalizedDestination = data.getOtherParticipantNormalizedDestination(); participantLookupKey = data.getParticipantLookupKey(); isGroup = data.getIsGroup(); isArchived = data.getIsArchived(); notificationEnabled = data.getNotificationEnabled(); } } private final ArrayMap<String, SelectedConversation> mSelectedConversations; private Listener mListener; private MenuItem mArchiveMenuItem; private MenuItem mUnarchiveMenuItem; private MenuItem mAddContactMenuItem; private MenuItem mBlockMenuItem; private MenuItem mNotificationOnMenuItem; private MenuItem mNotificationOffMenuItem; private boolean mHasInflated; public MultiSelectActionModeCallback(final Listener listener) { mListener = listener; mSelectedConversations = new ArrayMap<>(); } @Override public boolean onCreateActionMode(ActionMode actionMode, Menu menu) { actionMode.getMenuInflater().inflate(R.menu.conversation_list_fragment_select_menu, menu); mArchiveMenuItem = menu.findItem(R.id.action_archive); mUnarchiveMenuItem = menu.findItem(R.id.action_unarchive); mAddContactMenuItem = menu.findItem(R.id.action_add_contact); mBlockMenuItem = menu.findItem(R.id.action_block); mNotificationOffMenuItem = menu.findItem(R.id.action_notification_off); mNotificationOnMenuItem = menu.findItem(R.id.action_notification_on); mHasInflated = true; updateActionIconsVisiblity(); return true; } @Override public boolean onPrepareActionMode(ActionMode actionMode, Menu menu) { return true; } @Override public boolean onActionItemClicked(ActionMode actionMode, MenuItem menuItem) { switch (menuItem.getItemId()) { case R.id.action_delete: mListener.onActionBarDelete(mSelectedConversations.values()); return true; case R.id.action_archive: mListener.onActionBarArchive(mSelectedConversations.values(), true); return true; case R.id.action_unarchive: mListener.onActionBarArchive(mSelectedConversations.values(), false); return true; case R.id.action_notification_off: mListener.onActionBarNotification(mSelectedConversations.values(), false); return true; case R.id.action_notification_on: mListener.onActionBarNotification(mSelectedConversations.values(), true); return true; case R.id.action_add_contact: Assert.isTrue(mSelectedConversations.size() == 1); mListener.onActionBarAddContact(mSelectedConversations.valueAt(0)); return true; case R.id.action_block: Assert.isTrue(mSelectedConversations.size() == 1); mListener.onActionBarBlock(mSelectedConversations.valueAt(0)); return true; case android.R.id.home: mListener.onActionBarHome(); return true; default: return false; } } @Override public void onDestroyActionMode(ActionMode actionMode) { mListener = null; mSelectedConversations.clear(); mHasInflated = false; } public void toggleSelect(final ConversationListData listData, final ConversationListItemData conversationListItemData) { Assert.notNull(conversationListItemData); mBlockedSet = listData.getBlockedParticipants(); final String id = conversationListItemData.getConversationId(); if (mSelectedConversations.containsKey(id)) { mSelectedConversations.remove(id); } else { mSelectedConversations.put(id, new SelectedConversation(conversationListItemData)); } if (mSelectedConversations.isEmpty()) { mListener.onActionBarHome(); } else { updateActionIconsVisiblity(); } } public boolean isSelected(final String selectedId) { return mSelectedConversations.containsKey(selectedId); } private void updateActionIconsVisiblity() { if (!mHasInflated) { return; } if (mSelectedConversations.size() == 1) { final SelectedConversation conversation = mSelectedConversations.valueAt(0); // The look up key is a key given to us by contacts app, so if we have a look up key, // we know that the participant is already in contacts. final boolean isInContacts = !TextUtils.isEmpty(conversation.participantLookupKey); mAddContactMenuItem.setVisible(!conversation.isGroup && !isInContacts); // ParticipantNormalizedDestination is always null for group conversations. final String otherParticipant = conversation.otherParticipantNormalizedDestination; mBlockMenuItem.setVisible(otherParticipant != null && !mBlockedSet.contains(otherParticipant)); } else { mBlockMenuItem.setVisible(false); mAddContactMenuItem.setVisible(false); } boolean hasCurrentlyArchived = false; boolean hasCurrentlyUnarchived = false; boolean hasCurrentlyOnNotification = false; boolean hasCurrentlyOffNotification = false; final Iterable<SelectedConversation> conversations = mSelectedConversations.values(); for (final SelectedConversation conversation : conversations) { if (conversation.notificationEnabled) { hasCurrentlyOnNotification = true; } else { hasCurrentlyOffNotification = true; } if (conversation.isArchived) { hasCurrentlyArchived = true; } else { hasCurrentlyUnarchived = true; } // If we found at least one of each example we don't need to keep looping. if (hasCurrentlyOffNotification && hasCurrentlyOnNotification && hasCurrentlyArchived && hasCurrentlyUnarchived) { break; } } // If we have notification off conversations we show on button, if we have notification on // conversation we show off button. We can show both if we have a mixture. mNotificationOffMenuItem.setVisible(hasCurrentlyOnNotification); mNotificationOnMenuItem.setVisible(hasCurrentlyOffNotification); mArchiveMenuItem.setVisible(hasCurrentlyUnarchived); mUnarchiveMenuItem.setVisible(hasCurrentlyArchived); } }