Android Open Source - matrix-android-sdk Event Utils

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License

The source code is released under:
Apache License
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Java Source Code

/* 
 * Copyright 2014 OpenMarket Ltd/*from www. j  a  v  a2  s  .  c o m*/
 * 
 * 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 org.matrix.matrixandroidsdk.util;

import android.content.Context;

import org.matrix.androidsdk.MXSession;
import org.matrix.androidsdk.data.Room;
import org.matrix.androidsdk.data.RoomState;
import org.matrix.androidsdk.rest.model.Event;
import org.matrix.androidsdk.rest.model.Message;
import org.matrix.androidsdk.rest.model.RoomMember;
import org.matrix.androidsdk.rest.model.TextMessage;
import org.matrix.androidsdk.util.JsonUtils;
import org.matrix.matrixandroidsdk.Matrix;
import org.matrix.matrixandroidsdk.ViewedRoomTracker;

import java.util.regex.Pattern;

/**
 * Utility methods for events.
 */
public class EventUtils {

    /**
     * Whether the given event should be highlighted in its chat room.
     * @param context the context
     * @param event the event
     * @return whether the event is important and should be highlighted
     */
    public static boolean shouldHighlight(Context context, Event event) {
        if (!Event.EVENT_TYPE_MESSAGE.equals(event.type)) {
            return false;
        }

        MXSession session = Matrix.getInstance(context).getDefaultSession();
        String myUserId = session.getCredentials().userId;

        // Don't highlight the user's own messages
        if (event.userId.equals(myUserId)) {
            return false;
        }

        Message msg = JsonUtils.toMessage(event.content);
        if (Message.MSGTYPE_TEXT.equals(msg.msgtype)) {
            TextMessage textMsg = JsonUtils.toTextMessage(event.content);

            // Extract "bob" from "@bob:matrix.org"
            String namePart = myUserId.substring(1, myUserId.indexOf(':'));
            if (caseInsensitiveFind(namePart, textMsg.body)) {
                return true;
            }
            Room room = session.getDataHandler().getRoom(event.roomId);
            RoomMember myMember = room.getMember(myUserId);
            if (caseInsensitiveFind(myMember.displayname, textMsg.body)) {
                return true;
            }
        }

        return false;
    }

    /**
     * Returns whether a string contains an occurrence of another, as a standalone word, regardless of case.
     * @param subString the string to search for
     * @param longString the string to search in
     * @return whether a match was found
     */
    private static boolean caseInsensitiveFind(String subString, String longString) {
        Pattern pattern = Pattern.compile("(\\W|^)" + subString + "(\\W|$)", Pattern.CASE_INSENSITIVE);
        return pattern.matcher(longString).find();
    }

    /**
     * Whether the given event should trigger a notification.
     * @param context the context
     * @param event the event
     * @return true if the event should trigger a notification
     */
    public static boolean shouldNotify(Context context, Event event) {
        // Only room events trigger notifications
        if (event.roomId == null) {
            return false;
        }

        // No notification if the user is currently viewing the room
        if (event.roomId.equals(ViewedRoomTracker.getInstance().getViewedRoomId())) {
            return false;
        }

        if (shouldHighlight(context, event)) {
            return true;
        }

        if (!Event.EVENT_TYPE_MESSAGE.equals(event.type)) {
            return false;
        }

        MXSession session = Matrix.getInstance(context).getDefaultSession();
        Room room = session.getDataHandler().getRoom(event.roomId);
        if (RoomState.VISIBILITY_PRIVATE.equals(room.getVisibility())
                && !event.userId.equals(session.getCredentials().userId)) {
            return true;
        }
        return false;
    }
}
Java Source Code List
