/** Determine if message text changed and handle appropriately. */
private void checkMessageTextChanged() {
String newText = message.getText();
if (!newText.equals(messageText)) {
messageText = newText;
Session.getInstance().getEventBus().notifyObservers(MessageTextAreaChangedEvent.getEvent());
}
}
/** Wires up events. */
private void setupEvents() {
// user clicked in message text box
message.addFocusHandler(
new FocusHandler() {
public void onFocus(final FocusEvent inEvent) {
if ((" " + getStyleName() + " ")
.contains(StaticResourceBundle.INSTANCE.coreCss().small())) {
removeStyleName(StaticResourceBundle.INSTANCE.coreCss().small());
onExpand();
}
}
});
message.addValueChangedHandler(
new ValueChangeHandler<String>() {
public void onValueChange(final ValueChangeEvent<String> newValue) {
checkMessageTextChanged();
}
});
// user typed in message text box
message.addKeystrokeHandler(
new KeyUpHandler() {
public void onKeyUp(final KeyUpEvent ev) {
if (ev.getNativeKeyCode() == KeyCodes.KEY_ENTER
&& ev.isControlKeyDown()
&& message.getText().length() > 0) {
checkMessageTextChanged();
handlePostMessage();
} else {
checkMessageTextChanged();
}
}
});
// user clicked on post button
postButton.addClickHandler(
new ClickHandler() {
public void onClick(final ClickEvent ev) {
checkMessageTextChanged();
handlePostMessage();
}
});
final EventBus eventBus = Session.getInstance().getEventBus();
eventBus.addObserver(
MessageStreamAppendEvent.class,
new Observer<MessageStreamAppendEvent>() {
public void update(final MessageStreamAppendEvent event) {
errorMsg.setVisible(false);
addStyleName(StaticResourceBundle.INSTANCE.coreCss().small());
messageText = "";
message.setText(postBoxDefaultText);
onRemainingCharactersChanged();
links.close();
}
});
eventBus.addObserver(
GotSystemSettingsResponseEvent.class,
new Observer<GotSystemSettingsResponseEvent>() {
public void update(final GotSystemSettingsResponseEvent event) {
String warning = event.getResponse().getContentWarningText();
if (warning != null && !warning.isEmpty()) {
contentWarning.getElement().setInnerHTML(warning);
} else {
contentWarning.setVisible(false);
}
message.setVisible(true);
}
});
eventBus.addObserver(
MessageTextAreaChangedEvent.getEvent(),
new Observer<MessageTextAreaChangedEvent>() {
public void update(final MessageTextAreaChangedEvent arg1) {
// the value changed - make sure we're not stuck in the disabled, non-editable mode
if ((" " + getStyleName() + " ")
.contains(StaticResourceBundle.INSTANCE.coreCss().small())) {
removeStyleName(StaticResourceBundle.INSTANCE.coreCss().small());
}
onRemainingCharactersChanged();
}
});
eventBus.addObserver(
MessageAttachmentChangedEvent.class,
new Observer<MessageAttachmentChangedEvent>() {
public void update(final MessageAttachmentChangedEvent evt) {
errorMsg.setVisible(false);
attachment = evt.getAttachment();
if (attachment == null && messageText.isEmpty()) {
hidePostButton();
} else {
showPostButton();
}
}
});
eventBus.addObserver(
new ErrorPostingMessageToNullScopeEvent(),
new Observer<ErrorPostingMessageToNullScopeEvent>() {
public void update(final ErrorPostingMessageToNullScopeEvent event) {
errorMsg.setText(event.getErrorMsg());
errorMsg.setVisible(true);
showPostButton();
}
});
}