Java Code Examples for com.google.gwt.user.client.ui.ListBox

protected void updateListBox(List<JsonObject> items, ListBox listBox, BiConsumer<ListBox, List<JsonObject>> updateTask) {
    List<String> selectedItems = null;

    int selectedIdx = listBox.getSelectedIndex();
    int itemsCount = listBox.getItemCount();

    if (selectedIdx >= 0) {
        selectedItems = new ArrayList<>();
        for (int i = selectedIdx; i < itemsCount; i++) {
            selectedItems.add(listBox.getItemText(i));
        }
    }

    updateTask.accept(listBox, items);

    if (selectedItems != null) {
        // re-set selection
        for (int i = 0; i < itemsCount; i++) {
            String item = listBox.getItemText(i);
            listBox.setItemSelected(i, selectedItems.contains(item));
        }
    }
}
 

protected void updateListBoxItems(ListBox listBox, List<JsonObject> options) {
    List<String> listBoxItems = ((CubaDoubleClickListBox) listBox).getItems();

    for (int i = 0; i < options.size(); i++) {
        final JsonObject item = options.get(i);
        String value = MultiSelectWidget.getKey(item);
        String caption = MultiSelectWidget.getCaption(item);
        int index = i;
        // reuse existing option if possible
        if (index < listBox.getItemCount()) {
            if (!reorderable) {
                int listBoxItemIndex = listBoxItems.indexOf(caption);
                if (listBoxItemIndex >= 0) {
                    index = listBoxItemIndex;
                }
            }
            listBox.setItemText(index, caption);
            listBox.setValue(index, value);
        } else {
            listBox.addItem(caption, value);
        }
    }
}
 

protected static Set<String> moveSelectedItems(ListBox source, ListBox target) {
    final boolean[] sel = getSelectionBitmap(source);
    final Set<String> movedItems = new HashSet<>();
    for (int i = 0; i < sel.length; i++) {
        if (sel[i]) {
            final int optionIndex = i
                    - (sel.length - source.getItemCount());
            movedItems.add(source.getValue(optionIndex));

            // Move selection to another column
            final String text = source.getItemText(optionIndex);
            final String value = source.getValue(optionIndex);
            target.addItem(text, value);
            target.setItemSelected(target.getItemCount() - 1, true);
            source.removeItem(optionIndex);
        }
    }

    target.setFocus(true);

    return movedItems;
}
 

private Set<String> moveAllItems(ListBox source, ListBox target) {
    final Set<String> movedItems = new HashSet<String>();
    int size = source.getItemCount();
    for (int i = 0; i < size; i++) {
        movedItems.add(source.getValue(i));
        final String text = source.getItemText(i);
        final String value = source.getValue(i);
        target.addItem(text, value);
        target.setItemSelected(target.getItemCount() - 1, true);
    }
    target.setFocus(true);
    if (source.getItemCount() > 0) {
        target.setSelectedIndex(0);
    }
    source.clear();
    return movedItems;
}
 

private void addVolumeMenuItems( ListBox volumeMenu )
{
	volumeMenu.addItem( "0%", "0" );
	volumeMenu.addItem( "5%", "5" );
	volumeMenu.addItem( "10%", "10" );
	volumeMenu.addItem( "15%", "15" );
	volumeMenu.addItem( "20%", "20" );
	volumeMenu.addItem( "25%", "25" );
	volumeMenu.addItem( "30%", "30" );
	volumeMenu.addItem( "35%", "35" );
	volumeMenu.addItem( "40%", "40" );
	volumeMenu.addItem( "45%", "45" );
	volumeMenu.addItem( "50%", "50" );
	volumeMenu.addItem( "55%", "55" );
	volumeMenu.addItem( "60%", "60" );
	volumeMenu.addItem( "65%", "65" );
	volumeMenu.addItem( "70%", "70" );
	volumeMenu.addItem( "75%", "75" );
	volumeMenu.addItem( "80%", "80" );
	volumeMenu.addItem( "85%", "85" );
	volumeMenu.addItem( "90%", "90" );
	volumeMenu.addItem( "95%", "95" );
	volumeMenu.addItem( "100%", "100" );
}
 

private String getConfiguration() {
	String conf = iConfiguration;
	for (MatchResult matcher = iRegExp.exec(conf); matcher != null; matcher = iRegExp.exec(conf)) {
		Element element = DOM.getElementById(matcher.getGroup(1));
		String value = "";
		if ("select".equalsIgnoreCase(element.getTagName())) {
			ListBox list = ListBox.wrap(element);
			for (int i = 0; i < list.getItemCount(); i++) {
				if (list.isItemSelected(i))
					value += (value.isEmpty() ? "" : ",") + list.getValue(i);
			}
		} else if ("input".equalsIgnoreCase(element.getTagName())) {
			TextBox text = TextBox.wrap(element);
			value = text.getText();
		} else {
			Hidden hidden = Hidden.wrap(element);
			value = hidden.getValue();
		}
		conf = conf.replace("${" + matcher.getGroup(1) + "}", value);
	}
	return conf;
}
 

public GradeModeChange(ClassAssignmentInterface.ClassAssignment ca, SpecialRegistrationGradeModeChanges gradeMode) {
	super(null);
	iList = new ListBox();
	iList.addStyleName("grade-mode-list");
	iClasses = new ArrayList<ClassAssignmentInterface.ClassAssignment>();
	iClasses.add(ca);
	iGradeMode = new ArrayList<SpecialRegistrationGradeModeChanges>();
	iGradeMode.add(gradeMode);
	iList.addChangeHandler(new ChangeHandler() {
		@Override
		public void onChange(ChangeEvent event) {
			formChanged();
		}
	});
	setup();
}
 

public GradeModeLabel(GradeModeChange change, SpecialRegistrationGradeModeChanges gradeMode) {
	super(null);
	iGradeMode = gradeMode;
	iLabel = new Label();
	iLabel.addStyleName("grade-mode-label");
	iLabel.setText(iGradeMode.getCurrentGradeMode() == null ? "" : iGradeMode.getCurrentGradeMode().getLabel());
	final ListBox box = (ListBox)change.getWidget(); 
	box.addChangeHandler(new ChangeHandler() {
		@Override
		public void onChange(ChangeEvent event) {
			if (box.getSelectedIndex() <= 0) {
				iLabel.setText(iGradeMode.getCurrentGradeMode() == null ? "" : iGradeMode.getCurrentGradeMode().getLabel());
			} else {
				SpecialRegistrationGradeMode m = iGradeMode.getAvailableChange(box.getValue(box.getSelectedIndex()));
				if (m == null) {
					iLabel.setText(iGradeMode.getCurrentGradeMode() == null ? "" : iGradeMode.getCurrentGradeMode().getLabel());
				} else {
					iLabel.setText(m.getLabel());
				}
			}
		}
	});
}
 

protected void zoomSelectionChanged() {
	if (pageLayout == null)
		return;
	ListBox zoomSelection = zoomPanel.selection;
	int index = zoomSelection.getSelectedIndex();
	if (index < zoomOptions.size()) {
		pageLayout.setZoom(zoomOptions.get(index));
	} else {
		switch (index - zoomOptions.size()) {
		case 0:
			pageLayout.zoomToFitWidth();
			break;
		case 1:
			pageLayout.zoomToFitPage();
			break;
		default:
			throw new RuntimeException();
		}
	}
	zoomPanel.textBox.setText(zoomSelection.getSelectedItemText());
	zoomSelection.setFocus(false);
}
 

private Widget createAspectRatioListBox()
{
    final ListBox box = new ListBox();
    for (WCAspectRatio algo : WCAspectRatioRegistry.list())
        box.addItem(algo.getDescription(), algo.getId());

    box.setSelectedIndex(findIndex(box, setting.getAspectRatio().getId()));

    box.addChangeHandler(new ChangeHandler()
    {
        public void onChange(ChangeEvent event)
        {
            WCAspectRatio value = WCAspectRatioRegistry.getById(box.getValue(box.getSelectedIndex()));
            setting.setAspectRatio(value);
        }
    });

    box.setTitle("Desired aspect ratio of the drawing");

    return box;
}
 

private ListBox createNumberListBox()
{
    final ListBox box = new ListBox();
    List<String> values = Arrays.asList("10", "20", "30", "40", "50", "75", "100", "125", "150", "200", "250", "300");

    for (int i = 0; i < values.size(); i++)
        box.addItem(values.get(i));

    box.setSelectedIndex(findIndex(box, String.valueOf(setting.getWordCount())));

    box.addChangeHandler(new ChangeHandler()
    {
        public void onChange(ChangeEvent event)
        {
            int value = Integer.parseInt(box.getValue(box.getSelectedIndex()));
            setting.setWordCount(value);
        }
    });

    box.setTitle("Number of words to include in the word cloud");

    return box;
}
 

private ListBox createFontListBox()
{
    final ListBox box = new ListBox();
    for (WCFont font : WCFontRegistry.list())
        box.addItem(font.getDescription(), font.getName());

    box.setSelectedIndex(findIndex(box, setting.getFont().getName()));

    box.addChangeHandler(new ChangeHandler()
    {
        public void onChange(ChangeEvent event)
        {
            WCFont value = WCFontRegistry.getByName(box.getValue(box.getSelectedIndex()));
            setting.setFont(value);
        }
    });

    box.setTitle("Font family of the words");
    return box;
}
 

private ListBox createRankingListBox()
{
    final ListBox box = new ListBox();
    for (WCRankingAlgo algo : WCRankingAlgoRegistry.list())
        box.addItem(algo.getDescription(), algo.getId());

    box.setSelectedIndex(findIndex(box, setting.getRankingAlgorithm().getId()));

    box.addChangeHandler(new ChangeHandler()
    {
        public void onChange(ChangeEvent event)
        {
            WCRankingAlgo value = WCRankingAlgoRegistry.getById(box.getValue(box.getSelectedIndex()));
            setting.setRankingAlgorithm(value);
        }
    });

    box.setTitle("Ranking method for computing word importance, which determines font size of each word");
    return box;
}
 

private Widget createSimilarityListBox()
{
    final ListBox box = new ListBox();
    for (WCSimilarityAlgo font : WCSimilarityAlgoRegistry.list())
        box.addItem(font.getDescription(), font.getId());

    box.setSelectedIndex(findIndex(box, setting.getSimilarityAlgorithm().getId()));

    box.addChangeHandler(new ChangeHandler()
    {
        public void onChange(ChangeEvent event)
        {
            WCSimilarityAlgo value = WCSimilarityAlgoRegistry.getById(box.getValue(box.getSelectedIndex()));
            setting.setSimilarityAlgorithm(value);
        }
    });

    box.setTitle("Similarity method for computing relatedness between words; similar words tend to be placed together");
    return box;
}
 

/**
    * Utility function to set the current value in a ListBox.
    *
    * @return returns true if the option corresponding to the value
    * was successfully selected in the ListBox
    */
   public static final boolean setSelectedValue(ListBox list, String value, boolean addMissingValues) {
if (value == null) {
    list.setSelectedIndex(0);
    return false;
}
else {
    int index = findValueInListBox(list, value);
    if (index >= 0) {
	list.setSelectedIndex(index);
	return true;
    }

    if (addMissingValues) {
	list.addItem(value, value);

	// now that it's there, search again
	index = findValueInListBox(list, value);
	list.setSelectedIndex(index);
	return true;
    }

    return false;
}
   }
 

/**
 * Creates a drop down menu for selecting Template repositories.
 * @return the drop down menu of repository Urls.
 */
private ListBox makeTemplatesMenu() {
  final ListBox templatesMenu = new ListBox();
  templatesMenu.addItem(MESSAGES.templateUploadNewUrlCaption());
  templatesMenu.addItem(MIT_TEMPLATES);

  for (int k = 0; k < dynamicTemplateUrls.size(); k++) { // Dynamically added Urls
    templatesMenu.addItem(dynamicTemplateUrls.get(k));
  }
  templatesMenu.setSelectedIndex(MIT_TEMPLATES_INDEX);
  templatesMenu.addChangeHandler(new ChangeHandler() {
      public void onChange(ChangeEvent event) {
        int selectedIndex = templatesMenu.getSelectedIndex();

        if (selectedIndex == 0) {
          templatesMenu.setSelectedIndex(lastSelectedIndex);
          usingExternalTemplate = true; // MIT templates at index 1
          removeButton.setVisible(false);
          new InputTemplateUrlWizard(instance).center();     // This will do a callback
        } else if (selectedIndex == 1) {
          removeButton.setVisible(false);          lastSelectedIndex = selectedIndex;
          usingExternalTemplate = false; // MIT templates at index 1
          templateHostUrl = "";
          retrieveSelectedTemplates(templatesMenu.getValue(selectedIndex));  // may do callback
        } else {
          removeButton.setVisible(true);         lastSelectedIndex = selectedIndex;
          usingExternalTemplate = true; // MIT templates at index 1
          templateHostUrl = templatesMenu.getValue(selectedIndex);
          retrieveSelectedTemplates(templatesMenu.getValue(selectedIndex));  // may do callback
        }
      }
    });
  templatesMenu.setVisibleItemCount(1);  // Turns menu into a drop-down list).
  return templatesMenu;
}
 

/**
 * Creates a new MockSpinner component.
 *
 * @param editor editor of source file the component belongs to
 */
public MockSpinner(SimpleEditor editor) {
  super(editor, TYPE, images.spinner());

  // Initialize mock label UI
  spinnerWidget = new ListBox();
  spinnerWidget.addItem(MESSAGES.MockSpinnerAddItems());
  spinnerWidget.setStylePrimaryName("ode-SimpleMockComponent");
  spinnerWidget.addStyleName("spinnerComponentStyle");
  initComponent(spinnerWidget);
  refreshForm();
}
 

protected void createChoiceList() {
	choiceList = new ListBox();
	choiceList.setStyleName("list");
	choiceList.addKeyDownHandler(this);
	choiceList.addDoubleClickHandler(this);
	choiceList.addChangeHandler(this);
	choiceList.setStylePrimaryName("aceeditor-suggestpopup-list");
	setWidget(choiceList);
}
 

public void testChildren() {
    // UiBinder
    // given
    MaterialListBox listBox = (MaterialListBox)getWidget();

    // when / then
    assertEquals(3, listBox.getChildren().size());
    assertTrue(listBox.getWidget(0) instanceof ListBox);
    assertTrue(listBox.getWidget(1) instanceof Label);
    assertTrue(listBox.getWidget(2) instanceof MaterialLabel);
}
 

public void setValue(String name, String value) {
	Widget w = iWidgets.get(name);
	FilterParameterInterface param = iFilter.getParameter(name);
	if (param != null) param.setValue(value);
	if (w == null) return;
	if (w instanceof CheckBox) {
		((CheckBox)w).setValue("1".equals(value));
	} else if (w instanceof ListBox) {
		ListBox list = (ListBox)w;
		if (param != null && param.isMultiSelect()) {
			for (int i = 0; i < list.getItemCount(); i++) {
				boolean selected = false;
				for (String val: value.split(","))
					if (val.equalsIgnoreCase(list.getValue(i))) selected = true;
				list.setItemSelected(i, selected);
			}
		} else {
			for (int i = 0; i < list.getItemCount(); i++) {
				if (value.equalsIgnoreCase(list.getValue(i))) {
					list.setSelectedIndex(i); break;
				}
			}
		}
	} else if (w instanceof HasText) {
		((HasText)w).setText(value);
	}
}
 

@Deprecated
public void clear() {
	if (getWidget() instanceof ListBox)
		((ListBox)getWidget()).clear();
	if (getWidget() instanceof Panel)
		((Panel)getWidget()).clear();
}
 

@Override
public List<RelatedObjectInterface> getValue() {
	List<RelatedObjectInterface> objects = new ArrayList<RelatedObjectInterface>();
	for (int row = 1; row < getRowCount(); row ++) {
		CourseRelatedObjectLine line = getData(row);
		ListBox subject = (ListBox)getWidget(row, 0);
		RelatedObjectLookupRpcResponse rSubject = (subject.getSelectedIndex() < 0 ? null : line.getSubject(subject.getValue(subject.getSelectedIndex())));
		ListBox course = (ListBox)getWidget(row, 1);
		RelatedObjectLookupRpcResponse rCourse = (course.getSelectedIndex() < 0 ? null : line.getCourse(course.getValue(course.getSelectedIndex())));
		ListBox subpart = (ListBox)getWidget(row, 2);
		RelatedObjectLookupRpcResponse rSubpart = (subpart.getSelectedIndex() < 0 ? null : line.getSubpart(subpart.getValue(subpart.getSelectedIndex())));
		ListBox clazz = (ListBox)getWidget(row, 3);
		RelatedObjectLookupRpcResponse rClazz = (clazz.getSelectedIndex() < 0 ? null : line.getClass(clazz.getValue(clazz.getSelectedIndex())));
		if (rClazz != null && rClazz.getRelatedObject() != null) {
			objects.add(rClazz.getRelatedObject()); continue;
		}
		if (rSubpart != null && rSubpart.getRelatedObject() != null) {
			objects.add(rSubpart.getRelatedObject()); continue;
		}
		if (rCourse != null && rCourse.getRelatedObject() != null) {
			objects.add(rCourse.getRelatedObject()); continue;
		}
		if (rSubject != null && rSubject.getRelatedObject() != null) {
			objects.add(rSubject.getRelatedObject()); continue;
		}
	}
	return objects;
}
 

public VariableCreditChange(ClassAssignmentInterface.ClassAssignment ca, SpecialRegistrationVariableCreditChange vcc) {
	super(null);
	iList = new ListBox();
	iList.addStyleName("variable-credit-list");
	iClass = ca;
	iVarCredit = vcc;
	iList.addChangeHandler(new ChangeHandler() {
		@Override
		public void onChange(ChangeEvent event) {
			formChanged();
		}
	});
	setup();
}
 

private void select(ListBox l, String value) {
	for (int i = 0; i < l.getItemCount(); i++) {
		if (l.getValue(i).equals(value)) {
			l.setSelectedIndex(i);
			return;
		}
	}
}
 

public void setZoomOptions(List<Integer> newZoomOptions) {
	ListBox zoomSelection = zoomPanel.selection;
	int previousIndex = zoomSelection.getSelectedIndex();

	zoomSelection.clear();
	for (int i : newZoomOptions) {
		zoomSelection.addItem(i + "%");
	}
	zoomSelection.addItem(DjvuContext.getString("label_fitWidth", "Fit width"));
	zoomSelection.addItem(DjvuContext.getString("label_fitPage", "Fit page"));

	if (previousIndex >= zoomOptions.size()) {
		// either "fit with" or "fit page" was selected  
		zoomSelection.setSelectedIndex(newZoomOptions.size() + (zoomOptions.size() - previousIndex));
	} else {
		int zoom = pageLayout != null ? pageLayout.getZoom() : 100;
		int newSelected = Arrays.binarySearch(newZoomOptions.toArray(), zoom, Collections.reverseOrder());
		if (newSelected >= 0) {
			zoomSelection.setSelectedIndex(Math.min(newSelected, newZoomOptions.size() - 1));
			zoomOptions = newZoomOptions;
			zoomSelectionChanged();
		} else {
			zoomSelection.setSelectedIndex(-1);
			zoomOptions = newZoomOptions;
		}
	}
	zoomPanel.updateButtons();
}
 

public void setPageCount(int pagesCount) {
	this.pagesCount = pagesCount;
	ListBox pageSelection = pagePanel.selection;
	pageSelection.clear();
	for (int i = 1; i <= pagesCount; i++) {
		pageSelection.addItem(i + "");
	}
	pagePanel.updateButtons();
}
 

private void setItemEnabled(ListBox b, int index, boolean enabled)
{
    if (enabled)
        b.getElement().getElementsByTagName("option").getItem(index).removeAttribute("disabled");
    else
        b.getElement().getElementsByTagName("option").getItem(index).setAttribute("disabled", "disabled");
}
 

private int findIndex(ListBox box, String value)
{
    for (int i = 0; i < box.getItemCount(); i++)
        if (box.getValue(i).equals(value))
            return i;
    return -1;
}
 

private ListBox createLanguageListBox()
{
    final ListBox box = new ListBox();
    box.addItem("Arabic", "ar");
    box.addItem("Czech", "cs");
    box.addItem("Danish", "da");
    box.addItem("Dutch", "nl");
    box.addItem("English", "en");
    box.addItem("Finnish", "fi");
    box.addItem("French", "fr");
    box.addItem("German", "de");
    box.addItem("Greek", "el");
    box.addItem("Hungarian", "hu");
    box.addItem("Italian", "it");
    box.addItem("Japanese", "ja");
    box.addItem("Norwegian", "no");
    box.addItem("Polish", "pl");
    box.addItem("Portuguese", "pt");
    box.addItem("Russian", "ru");
    box.addItem("Spanish", "es");
    box.addItem("Swedish", "sv");
    box.addItem("Turkish", "tr");

    box.setSelectedIndex(findIndex(box, setting.getLanguage()));
    setNonEnglishText("en".equals(setting.getLanguage()));

    box.addChangeHandler(new ChangeHandler()
    {
        public void onChange(ChangeEvent event)
        {
            String value = box.getValue(box.getSelectedIndex());
            setting.setLanguage(value);
            setNonEnglishText("en".equals(value));
        }
    });

    box.setTitle("Language of text");

    return box;
}
 

@Override
public void onModuleLoad() {

    eventListBox = new ListBox(true);
    eventListBox.setVisibleItemCount(20);
    RootPanel.get("eventlog").add(eventListBox);

    singleListBox = new SingleListBox();
    singleListBox.addItem("Apples");
    singleListBox.addItem("Bananas");
    singleListBox.addItem("Oranges");
    singleListBox.addItem("Pears");
    singleListBox.addValueChangeHandler(new ValueChangeHandler<String>() {
        @Override
        public void onValueChange(ValueChangeEvent<String> event) {
            addEvent("ValueChangeEvent: " + event.getValue());
        }
    });
    Panel select = RootPanel.get("select");
    select.add(singleListBox);

    Panel toggle = RootPanel.get("toggle");
    toggle.add(createSetAddMissingValue(true));
    toggle.add(createSetAddMissingValue(false));

    Panel controls1 = RootPanel.get("controls1");
    controls1.add(createSelectButton("Bananas"));
    controls1.add(createSelectButton("Pears"));

    Panel controls2 = RootPanel.get("controls2");
    controls2.add(createSelectButton("Kiwis"));
    controls2.add(createSelectButton("Watermelons"));
}