Java tutorial
/* * Copyright 2015 OpenMarket Ltd * * 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 im.vector.fragments; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.os.Bundle; import android.support.v4.app.DialogFragment; import android.view.View; import android.widget.ListView; import org.matrix.androidsdk.MXSession; import org.matrix.androidsdk.data.IMXStore; import org.matrix.androidsdk.data.Room; import org.matrix.androidsdk.data.RoomSummary; import org.matrix.androidsdk.db.MXMediasCache; import org.matrix.androidsdk.rest.callback.SimpleApiCallback; import org.matrix.androidsdk.rest.model.RoomMember; import im.vector.Matrix; import im.vector.R; import im.vector.adapters.MembersInvitationAdapter; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.Comparator; /** * A dialog fragment showing a list of room members for a given room. */ public class MembersInvitationDialogFragment extends DialogFragment { private static final String LOG_TAG = "MembersInvitationDialogFragment"; public static final String ARG_ROOM_ID = "MembersInvitationDialogFragment.ARG_ROOM_ID"; private ListView mListView; private MembersInvitationAdapter mAdapter; private MXSession mSession; private String mRoomId; public static MembersInvitationDialogFragment newInstance(MXSession session, String roomId) { MembersInvitationDialogFragment f = new MembersInvitationDialogFragment(); Bundle args = new Bundle(); args.putString(ARG_ROOM_ID, roomId); f.setArguments(args); f.setSession(session); return f; } public void setSession(MXSession session) { mSession = session; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Context context = getActivity().getApplicationContext(); mRoomId = getArguments().getString(ARG_ROOM_ID); } /** * Return the used medias cache. * This method can be overridden to use another medias cache * @return the used medias cache */ public MXMediasCache getMXMediasCache() { return Matrix.getInstance(getActivity()).getMediasCache(); } @Override public Dialog onCreateDialog(Bundle savedInstanceState) { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); View view = getActivity().getLayoutInflater().inflate(R.layout.fragment_dialog_invitation_member_list, null); builder.setView(view); initView(view); builder.setTitle(getString(R.string.title_activity_invite_user)); builder.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { ArrayList<RoomMember> members = mAdapter.getSelectedMembers(); ArrayList<String> userIDs = new ArrayList<String>(); for (RoomMember member : members) { userIDs.add(member.getUserId()); } Room room = mSession.getDataHandler().getRoom(mRoomId); room.invite(userIDs, new SimpleApiCallback<Void>(getActivity()) { @Override public void onSuccess(Void info) { } }); } }); builder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { } }); return builder.create(); } // Comparator to order members alphabetically private Comparator<RoomMember> alphaComparator = new Comparator<RoomMember>() { @Override public int compare(RoomMember member1, RoomMember member2) { String lhs = member1.displayname; if (null == lhs) { lhs = member1.getUserId(); } String rhs = member2.displayname; if (null == rhs) { rhs = member2.getUserId(); } if (lhs == null) { return -1; } else if (rhs == null) { return 1; } if (lhs.startsWith("@")) { lhs = lhs.substring(1); } if (rhs.startsWith("@")) { rhs = rhs.substring(1); } return String.CASE_INSENSITIVE_ORDER.compare(lhs, rhs); } }; /** * Init the dialog view. * @param v the dialog view. */ void initView(View v) { mListView = ((ListView) v.findViewById(R.id.listView_members)); IMXStore store = mSession.getDataHandler().getStore(); // remove the current room members ArrayList<String> idsToIgnore = new ArrayList<String>(); Room room = store.getRoom(mRoomId); Collection<RoomMember> currentMembers = room.getMembers(); for (RoomMember member : currentMembers) { idsToIgnore.add(member.getUserId()); } // get the members list ArrayList<RoomMember> members_OneToOne = new ArrayList<RoomMember>(); ArrayList<String> ids_OneToOne = new ArrayList<String>(); ArrayList<RoomMember> members_MaxTenMembers = new ArrayList<RoomMember>(); ArrayList<String> ids_MaxTenMembers = new ArrayList<String>(); ArrayList<RoomMember> members_BigRooms = new ArrayList<RoomMember>(); ArrayList<String> ids_BigRooms = new ArrayList<String>(); Collection<RoomSummary> summaries = store.getSummaries(); for (RoomSummary summary : summaries) { // not the current summary if (!summary.getRoomId().equals(mRoomId)) { Collection<RoomMember> otherRoomMembers = room.getMembers(); for (RoomMember member : otherRoomMembers) { String userID = member.getUserId(); // accepted User ID or still active users if ((idsToIgnore.indexOf(userID) < 0) && (RoomMember.MEMBERSHIP_JOIN.equals(member.membership))) { int posOneToOne = ids_OneToOne.indexOf(userID); int posTenMembers = ids_MaxTenMembers.indexOf(userID); int posBigRooms = ids_BigRooms.indexOf(userID); if (otherRoomMembers.size() <= 2) { if (posBigRooms >= 0) { members_BigRooms.remove(posBigRooms); ids_BigRooms.remove(posBigRooms); } if (posTenMembers >= 0) { members_MaxTenMembers.remove(posTenMembers); ids_MaxTenMembers.remove(posTenMembers); } if (posOneToOne < 0) { members_OneToOne.add(member); ids_OneToOne.add(member.getUserId()); } } else if (otherRoomMembers.size() <= 10) { if (posBigRooms >= 0) { members_BigRooms.remove(posBigRooms); ids_BigRooms.remove(posBigRooms); } if ((posTenMembers < 0) && (posOneToOne < 0)) { members_MaxTenMembers.add(member); ids_MaxTenMembers.add(member.getUserId()); } } else { if ((posBigRooms < 0) && (posTenMembers < 0) && (posOneToOne < 0)) { members_BigRooms.add(member); ids_BigRooms.add(member.getUserId()); } } } } } } mAdapter = new MembersInvitationAdapter(getActivity(), R.layout.adapter_item_members_invitation, getMXMediasCache()); Collections.sort(members_OneToOne, alphaComparator); Collections.sort(members_MaxTenMembers, alphaComparator); Collections.sort(members_BigRooms, alphaComparator); mAdapter.addAll(members_OneToOne); mAdapter.addAll(members_MaxTenMembers); mAdapter.addAll(members_BigRooms); ArrayList<Integer> bounds = new ArrayList<Integer>(); ArrayList<String> sectionTitles = new ArrayList<String>(); int index = 0; if (members_OneToOne.size() > 0) { bounds.add(index); sectionTitles.add(getActivity().getResources().getString(R.string.members_one_to_one)); index += members_OneToOne.size(); } if (members_MaxTenMembers.size() > 0) { bounds.add(index); sectionTitles.add(getActivity().getResources().getString(R.string.members_small_room_members)); index += members_MaxTenMembers.size(); } if (members_BigRooms.size() > 0) { bounds.add(index); sectionTitles.add(getActivity().getResources().getString(R.string.members_large_room_members)); index += members_BigRooms.size(); } mAdapter.setSectionTiles(bounds, sectionTitles); mListView.setAdapter(mAdapter); } }