public void update(User user) {
this.hasFocus = true;
if (user != currentUser) {
updateHistoricMessages(revedereManager.getCurrentSession().getMessagesForUser(user));
}
this.currentUser = user;
this.userNameLabel.setText(user.getName());
addListenerOnShortMessageUpdateIfMissing();
}
private void addListenerOnShortMessageUpdateIfMissing() {
final RevedereSession currentRevedereSession = revedereManager.getCurrentSession();
if (currentRevedereSession != null && collectorListener == null) {
collectorListener =
new CollectorListener<ShortMessageUpdate>() {
@Override
public void onUpdate(
Collector<ShortMessageUpdate> collector, ShortMessageUpdate update) {
if (hasFocus) {
updateHistoricMessages(currentRevedereSession.getMessagesForUser(currentUser));
}
}
};
currentRevedereSession.addListenerToShortMessageCollector(collectorListener);
}
}
public class MessageComposite extends Composite {
private final RevedereManager revedereManager = RevedereManager.getInstance();
private final Composite parent;
private final Label userNameLabel;
private final Label backButton;
private final Image backImage;
private final Button sendNewMessageButton;
private final Text newMessageText;
private final Text historicMessages;
private final ViewStack viewStack;
private boolean hasFocus = false;
private User currentUser;
private CollectorListener<ShortMessageUpdate> collectorListener;
public MessageComposite(Composite parent, ViewStack viewStack) {
super(parent, SWT.WRAP);
this.viewStack = viewStack;
this.parent = parent;
setLayout(new GridLayout(2, false));
userNameLabel = new Label(this, SWT.NONE);
userNameLabel.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
backButton = new Label(this, SWT.NONE);
backButton.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
backImage =
AbstractUIPlugin.imageDescriptorFromPlugin("EclipsePlugin", "/icons/back.png")
.createImage();
backButton.setImage(backImage);
backButton.addMouseListener(
new MouseAdapter() {
@Override
public void mouseDown(MouseEvent e) {
hasFocus = false;
viewStack.changeToUsersView();
}
});
historicMessages =
new Text(this, SWT.BORDER | SWT.READ_ONLY | SWT.H_SCROLL | SWT.V_SCROLL | SWT.CANCEL);
historicMessages.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1));
newMessageText = new Text(this, SWT.BORDER);
newMessageText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
sendNewMessageButton = new Button(this, SWT.NONE);
sendNewMessageButton.setText("Send");
sendNewMessageButton.addMouseListener(
new MouseAdapter() {
@Override
public void mouseDown(MouseEvent e) {
if (!newMessageText.getText().isEmpty()) {
revedereManager
.getCurrentSession()
.sendMessage(currentUser, newMessageText.getText());
newMessageText.setText("");
}
}
});
this.parent.layout();
}
public void update(User user) {
this.hasFocus = true;
if (user != currentUser) {
updateHistoricMessages(revedereManager.getCurrentSession().getMessagesForUser(user));
}
this.currentUser = user;
this.userNameLabel.setText(user.getName());
addListenerOnShortMessageUpdateIfMissing();
}
private void addListenerOnShortMessageUpdateIfMissing() {
final RevedereSession currentRevedereSession = revedereManager.getCurrentSession();
if (currentRevedereSession != null && collectorListener == null) {
collectorListener =
new CollectorListener<ShortMessageUpdate>() {
@Override
public void onUpdate(
Collector<ShortMessageUpdate> collector, ShortMessageUpdate update) {
if (hasFocus) {
updateHistoricMessages(currentRevedereSession.getMessagesForUser(currentUser));
}
}
};
currentRevedereSession.addListenerToShortMessageCollector(collectorListener);
}
}
private void updateHistoricMessages(Set<ShortMessage> messages) {
final StringBuilder stringBuilder = new StringBuilder();
for (ShortMessage message : messages) {
stringBuilder.append(message);
stringBuilder.append("\n");
}
Display.getDefault()
.syncExec(
new Runnable() {
@Override
public void run() {
historicMessages.setText(stringBuilder.toString());
viewStack.layout();
}
});
}
}