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envoy
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Use ObservableList in LocalDB and Chat, reduce amount of UI refreshes

This commit is contained in:
Kai S. K. Engelbart 2020-09-25 19:19:54 +02:00
parent 86e189a40a
commit 6d7afbaa8f
Signed by: kske
GPG Key ID: 8BEB13EC5DF7EF13
5 changed files with 54 additions and 93 deletions
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25
client/src/main/java/envoy/client/data/Chat.java
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@ -3,6 +3,8 @@ package envoy.client.data;
import java.io.*;
import java.util.*;
import javafx.collections.*;
import envoy.client.net.WriteProxy;
import envoy.data.*;
import envoy.data.Message.MessageStatus;
@ -19,8 +21,9 @@ import envoy.event.MessageStatusChange;
*/
public class Chat implements Serializable {
protected final Contact recipient;
protected final List<Message> messages = new ArrayList<>();
protected final Contact recipient;
protected transient ObservableList<Message> messages = FXCollections.observableArrayList();
protected int unreadAmount;
@ -29,7 +32,7 @@ public class Chat implements Serializable {
*/
protected transient long lastWritingEvent;
private static final long serialVersionUID = 1L;
private static final long serialVersionUID = 2L;
/**
* Provides the list of messages that the recipient receives.
@ -41,6 +44,16 @@ public class Chat implements Serializable {
*/
public Chat(Contact recipient) { this.recipient = recipient; }
private void readObject(ObjectInputStream stream) throws ClassNotFoundException, IOException {
stream.defaultReadObject();
messages = FXCollections.observableList((List<Message>) stream.readObject());
}
private void writeObject(ObjectOutputStream stream) throws IOException {
stream.defaultWriteObject();
stream.writeObject(new ArrayList<>(messages));
}
@Override
public String toString() { return String.format("%s[recipient=%s,messages=%d]", getClass().getSimpleName(), recipient, messages.size()); }
@ -72,11 +85,9 @@ public class Chat implements Serializable {
*
* @param writeProxy the write proxy instance used to notify the server about
* the message status changes
* @throws IOException if a {@link MessageStatusChange} could not be
* delivered to the server
* @since Envoy Client v0.3-alpha
*/
public void read(WriteProxy writeProxy) throws IOException {
public void read(WriteProxy writeProxy) {
for (int i = messages.size() - 1; i >= 0; --i) {
final Message m = messages.get(i);
if (m.getSenderID() == recipient.getID()) if (m.getStatus() == MessageStatus.READ) break;
@ -127,7 +138,7 @@ public class Chat implements Serializable {
* @return all messages in the current chat
* @since Envoy Client v0.1-beta
*/
public List<Message> getMessages() { return messages; }
public ObservableList<Message> getMessages() { return messages; }
/**
* @return the recipient of a message

3
client/src/main/java/envoy/client/data/GroupChat.java
View File

@ -1,6 +1,5 @@
package envoy.client.data;
import java.io.IOException;
import java.time.Instant;
import envoy.client.net.WriteProxy;
@ -32,7 +31,7 @@ public final class GroupChat extends Chat {
}
@Override
public void read(WriteProxy writeProxy) throws IOException {
public void read(WriteProxy writeProxy) {
for (int i = messages.size() - 1; i >= 0; --i) {
final GroupMessage gmsg = (GroupMessage) messages.get(i);
if (gmsg.getSenderID() != sender.getID()) if (gmsg.getMemberStatuses().get(sender.getID()) == MessageStatus.READ) break;

41
client/src/main/java/envoy/client/data/LocalDB.java
View File

@ -7,6 +7,8 @@ import java.time.Instant;
import java.util.*;
import java.util.logging.*;
import javafx.collections.*;
import envoy.client.event.EnvoyCloseEvent;
import envoy.data.*;
import envoy.data.Message.MessageStatus;
@ -30,12 +32,12 @@ import dev.kske.eventbus.EventListener;
public final class LocalDB implements EventListener {
// Data
private User user;
private Map<String, User> users = Collections.synchronizedMap(new HashMap<>());
private List<Chat> chats = Collections.synchronizedList(new ArrayList<>());
private IDGenerator idGenerator;
private CacheMap cacheMap = new CacheMap();
private String authToken;
private User user;
private Map<String, User> users = Collections.synchronizedMap(new HashMap<>());
private ObservableList<Chat> chats = FXCollections.observableArrayList();
private IDGenerator idGenerator;
private CacheMap cacheMap = new CacheMap();
private String authToken;
// State management
private Instant lastSync = Instant.EPOCH;
@ -129,7 +131,7 @@ public final class LocalDB implements EventListener {
if (user == null) throw new IllegalStateException("Client user is null, cannot initialize user storage");
userFile = new File(dbDir, user.getID() + ".db");
try (var in = new ObjectInputStream(new FileInputStream(userFile))) {
chats = (List<Chat>) in.readObject();
chats = FXCollections.observableList((List<Chat>) in.readObject());
cacheMap = (CacheMap) in.readObject();
lastSync = (Instant) in.readObject();
} finally {
@ -189,8 +191,8 @@ public final class LocalDB implements EventListener {
SerializationUtils.write(usersFile, users);
// Save user data and last sync time stamp
if (user != null)
SerializationUtils.write(userFile, chats, cacheMap, Context.getInstance().getClient().isOnline() ? Instant.now() : lastSync);
if (user != null) SerializationUtils
.write(userFile, new ArrayList<>(chats), cacheMap, Context.getInstance().getClient().isOnline() ? Instant.now() : lastSync);
// Save last login information
if (authToken != null) SerializationUtils.write(lastLoginFile, user, authToken);
@ -212,10 +214,12 @@ public final class LocalDB implements EventListener {
logger.warning("The groupMessage has the unexpected status " + msg.getStatus());
}
@Event(priority = 150, includeSubtypes = true)
private void onMessageStatusChange(MessageStatusChange evt) {
// TODO: Cancel event once EventBus is updated
if (evt.get().ordinal() < MessageStatus.RECEIVED.ordinal()) logger.warning("Received invalid " + evt);
@Event(priority = 150)
private void onMessageStatusChange(MessageStatusChange evt) { getMessage(evt.getID()).ifPresent(msg -> msg.setStatus(evt.get())); }
@Event(priority = 150)
private void onGroupMessageStatusChange(GroupMessageStatusChange evt) {
this.<GroupMessage>getMessage(evt.getID()).ifPresent(msg -> msg.getMemberStatuses().replace(evt.getMemberID(), evt.get()));
}
@Event(priority = 150)
@ -249,8 +253,8 @@ public final class LocalDB implements EventListener {
* @return an optional containing the message
* @since Envoy Client v0.1-beta
*/
public Optional<Message> getMessage(long id) {
return chats.stream().map(Chat::getMessages).flatMap(List::stream).filter(m -> m.getID() == id).findAny();
public <T extends Message> Optional<T> getMessage(long id) {
return (Optional<T>) chats.stream().map(Chat::getMessages).flatMap(List::stream).filter(m -> m.getID() == id).findAny();
}
/**
@ -267,12 +271,7 @@ public final class LocalDB implements EventListener {
* sender
* @since Envoy Client v0.1-alpha
**/
public List<Chat> getChats() { return chats; }
/**
* @param chats the chats to set
*/
public void setChats(List<Chat> chats) { this.chats = chats; }
public ObservableList<Chat> getChats() { return chats; }
/**
* @return the {@link User} who initialized the local database

31
client/src/main/java/envoy/client/ui/ListViewRefresh.java
View File

@ -1,31 +0,0 @@
package envoy.client.ui;
import javafx.scene.control.*;
/**
* This is a utility class that provides access to a refreshing mechanism for
* elements that were added without notifying the underlying {@link ListView}.
*
* @author Leon Hofmeister
* @since Envoy Client v0.1-beta
*/
public final class ListViewRefresh {
private ListViewRefresh() {}
/**
* Deeply refreshes a {@code listview}, meaning it recomputes every single of
* its {@link ListCell}s.
* <p>
* While it does work, it is <b>not the most efficient algorithm</b> possible.
*
* @param toRefresh the listView to refresh
* @param <T> the type of its {@code listcells}
* @since Envoy Client v0.1-beta
*/
public static <T> void deepRefresh(ListView<T> toRefresh) {
final var items = toRefresh.getItems();
toRefresh.setItems(null);
toRefresh.setItems(items);
}
}

47
client/src/main/java/envoy/client/ui/controller/ChatScene.java
View File

@ -11,7 +11,7 @@ import java.util.logging.*;
import javafx.animation.RotateTransition;
import javafx.application.Platform;
import javafx.collections.*;
import javafx.collections.ObservableList;
import javafx.collections.transformation.FilteredList;
import javafx.fxml.*;
import javafx.scene.control.*;
@ -167,7 +167,8 @@ public final class ChatScene implements EventListener, Restorable {
messageList.setCellFactory(MessageListCell::new);
chatList.setCellFactory(new ListCellFactory<>(ChatControl::new));
// JavaFX provides an internal way of populating the context menu of a textarea.
// JavaFX provides an internal way of populating the context menu of a text
// area.
// We, however, need additional functionality.
messageTextArea.setContextMenu(new TextInputContextMenu(messageTextArea, e -> checkKeyCombination(null)));
@ -186,7 +187,7 @@ public final class ChatScene implements EventListener, Restorable {
clip.setArcWidth(43);
clientProfilePic.setClip(clip);
chatList.setItems(chats = new FilteredList<>(FXCollections.observableList(localDB.getChats())));
chatList.setItems(chats = new FilteredList<>(localDB.getChats()));
contactLabel.setText(localDB.getUser().getName());
initializeSystemCommandsMap();
@ -228,12 +229,8 @@ public final class ChatScene implements EventListener, Restorable {
// Read current chat or increment unread amount
if (chat.equals(currentChat)) {
try {
currentChat.read(writeProxy);
} catch (final IOException e) {
logger.log(Level.WARNING, "Could not read current chat: ", e);
}
Platform.runLater(() -> { ListViewRefresh.deepRefresh(messageList); scrollToMessageListEnd(); });
currentChat.read(writeProxy);
Platform.runLater(this::scrollToMessageListEnd);
} else if (!ownMessage && message.getStatus() != MessageStatus.READ) chat.incrementUnreadAmount();
// Move chat with most recent unread messages to the top
@ -248,22 +245,12 @@ public final class ChatScene implements EventListener, Restorable {
@Event
private void onMessageStatusChange(MessageStatusChange evt) {
localDB.getMessage(evt.getID()).ifPresent(message -> {
message.setStatus(evt.get());
// Update UI if in current chat and the current user was the sender of the
// message
if (currentChat != null && message.getSenderID() == client.getSender().getID()) Platform.runLater(messageList::refresh);
});
}
@Event
private void onGroupMessageStatusChange(GroupMessageStatusChange evt) {
localDB.getMessage(evt.getID()).ifPresent(groupMessage -> {
((GroupMessage) groupMessage).getMemberStatuses().replace(evt.getMemberID(), evt.get());
// Update UI if in current chat
if (currentChat != null && groupMessage.getRecipientID() == currentChat.getRecipient().getID()) Platform.runLater(messageList::refresh);
});
// Update UI if in current chat and the current user was the sender of the
// message
if (currentChat != null) localDB.getMessage(evt.getID())
.filter(msg -> msg.getSenderID() == client.getSender().getID())
.ifPresent(msg -> Platform.runLater(messageList::refresh));
}
@Event
@ -273,7 +260,7 @@ public final class ChatScene implements EventListener, Restorable {
.filter(c -> c.getRecipient().getID() == evt.getID())
.findAny()
.map(Chat::getRecipient)
.ifPresent(u -> { ((User) u).setStatus(evt.get()); Platform.runLater(() -> ListViewRefresh.deepRefresh(chatList)); });
.ifPresent(u -> ((User) u).setStatus(evt.get()));
}
@Event
@ -318,6 +305,7 @@ public final class ChatScene implements EventListener, Restorable {
clientProfilePic.setImage(IconUtil.loadIconThemeSensitive("user_icon", 43));
chatList.setCellFactory(new ListCellFactory<>(ChatControl::new));
messageList.setCellFactory(MessageListCell::new);
// TODO: cache image
if (currentChat.getRecipient() instanceof User) recipientProfilePic.setImage(IconUtil.loadIconThemeSensitive("user_icon", 43));
else recipientProfilePic.setImage(IconUtil.loadIconThemeSensitive("group_icon", 43));
}
@ -358,18 +346,14 @@ public final class ChatScene implements EventListener, Restorable {
// Load the chat
currentChat = localDB.getChat(user.getID()).get();
messageList.setItems(FXCollections.observableList(currentChat.getMessages()));
messageList.setItems(currentChat.getMessages());
final var scrollIndex = messageList.getItems().size() - currentChat.getUnreadAmount();
messageList.scrollTo(scrollIndex);
logger.log(Level.FINEST, "Loading chat with " + user + " at index " + scrollIndex);
deleteContactMenuItem.setText("Delete " + user.getName());
// Read the current chat
try {
currentChat.read(writeProxy);
} catch (final IOException e) {
logger.log(Level.WARNING, "Could not read current chat.", e);
}
currentChat.read(writeProxy);
// Discard the pending attachment
if (recorder.isRecording()) {
@ -690,7 +674,6 @@ public final class ChatScene implements EventListener, Restorable {
localDB.getChats().remove(currentChat);
localDB.getChats().add(0, currentChat);
});
ListViewRefresh.deepRefresh(messageList);
scrollToMessageListEnd();
// Request a new ID generator if all IDs were used