public ListSelector(final RosterItem rosterItem) {
this.rosterItem = rosterItem;
addStyleName("listselector");
StyledFlowPanel buttons = new StyledFlowPanel("buttons");
add(wrapper);
add(buttons);
final TextBox input = new TextBox();
Button add = new Button("Create new list");
buttons.add(input);
buttons.add(add);
// get all available lists for your complete roster
OswService service = OswServiceFactory.getService();
Set<String> groups = service.getRoster().getGroups();
// try to get all the lists this person is on
try {
listed = rosterItem.getGroups();
} catch (NullPointerException e) {
listed = new ArrayList<String>();
}
// add all lists as checkboxes
if (groups.size() > 0) {
for (String list : groups) {
if (list != null) addCheckbox(list, false);
}
}
add.addClickHandler(
new ClickHandler() {
public void onClick(ClickEvent event) {
// add a new option to the list and check it
addCheckbox(input.getText(), true);
// empty the input field
input.setText("");
}
});
}
public void addCheckbox(String list, Boolean value) {
final CheckBox checkbox = new CheckBox(list);
StyledFlowPanel fix = new StyledFlowPanel("fix");
checkbox.addStyleName("checkbox");
// manage checks and unchecks
checkbox.addValueChangeHandler(
new ValueChangeHandler<Boolean>() {
@Override
public void onValueChange(ValueChangeEvent<Boolean> event) {
// is the item is checked?
if (event.getValue() == true
&& !listed.contains(checkbox.getText())
&& checkbox.getText() != null
&& checkbox.getText().length() != 0) {
// set the values
listed.add(checkbox.getText());
rosterItem.setGroups(listed);
// disable during processing
checkbox.setEnabled(false);
// show task
final DefaultTaskInfo task = new DefaultTaskInfo("Adding person to the list", false);
TaskMonitor.getInstance().addTask(task);
// save new state
rosterItem.save(
new RequestCallback<RosterItem>() {
@Override
public void onFailure() {
// return to original state and notify user
checkbox.setEnabled(true);
checkbox.setValue(true);
task.complete("Could not add person to list.", Status.failure);
}
@Override
public void onSuccess(RosterItem result) {
// enable the checkbox again
checkbox.setEnabled(true);
task.complete("", Status.succes);
}
});
} else if (event.getValue() == false && listed.contains(checkbox.getText())) {
// set the values
listed.remove(checkbox.getText());
rosterItem.setGroups(listed);
// disable during processing
checkbox.setEnabled(false);
// show task
final DefaultTaskInfo task =
new DefaultTaskInfo("Removing person from the list", false);
TaskMonitor.getInstance().addTask(task);
// save new state
rosterItem.save(
new RequestCallback<RosterItem>() {
@Override
public void onFailure() {
// return to original state and notify user
checkbox.setEnabled(true);
checkbox.setValue(true);
task.complete("Could not remove person from the list.", Status.failure);
}
@Override
public void onSuccess(RosterItem result) {
// enable the checkbox again
checkbox.setEnabled(true);
task.complete("", Status.succes);
}
});
}
}
});
// if this person is already on the list make sure the checkbox is
// checked
if (listed != null && list.length() > 0 && listed.contains(list)) {
checkbox.setValue(true);
} else if (value == true) {
// if a new checkbox is added automatically check it and fire a
// change event
checkbox.setValue(true);
checkbox.fireEvent(new ValueChangeEvent<Boolean>(true) {});
}
if (checkbox.getText() != null && checkbox.getText().length() != 0) {
wrapper.add(checkbox);
wrapper.add(fix);
}
}
