Java Code Examples for com.google.gwt.event.dom.client.ChangeEvent

@Override
public void onChange(ChangeEvent event) {
	if (descriptionPopup == null) {
		createDescriptionPopup();
	}

	int selected = choiceList.getSelectedIndex();
	String descr = visibleSuggs.get(selected).descriptionText;

	if (descr != null && !descr.isEmpty()) {
		((HTML) descriptionPopup.getWidget()).setHTML(descr);
           if (showDescriptions) {
               descriptionPopup.show();
           }
       } else {
		descriptionPopup.hide();
	}
}
 

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());
				}
			}
		}
	});
}
 

@Override
boolean dispatch(ChangeEvent event, Element context, WaveChangeHandler handler) {
  Timer timer = null;
  if (Timing.isEnabled()) {
    Timing.enterScope();
    timer = Timing.start("Mouse event dispatch");
  }
  try {
    return handler.onChange(event, context);
  } finally {
    if (timer != null) {
      Timing.stop(timer);
      Timing.exitScope();
    }
  }
}
 

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 Widget createLayoutListBox()
{
    final GroupedListBox box = new GroupedListBox();
    for (WCLayoutAlgo algo : WCLayoutAlgoRegistry.list())
        box.addItem(algo.getType() + " | " + algo.getDescription(), algo.getId());

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

    box.addChangeHandler(new ChangeHandler()
    {
        public void onChange(ChangeEvent event)
        {
            WCLayoutAlgo value = WCLayoutAlgoRegistry.getById(box.getValue(box.getSelectedIndex()));
            setting.setLayoutAlgorithm(value);
        }
    });

    box.setTitle("Layout method for the word cloud");
    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 createColorListBox()
{
    final GroupedListBox box = new GroupedListBox();
    for (WCColorScheme scheme : WCColorSchemeRegistry.list())
        box.addItem(scheme.getType() + " | " + scheme.getDescription(), scheme.getName());

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

    box.addChangeHandler(new ChangeHandler()
    {
        public void onChange(ChangeEvent event)
        {
            WCColorScheme value = WCColorSchemeRegistry.getByName(box.getValue(box.getSelectedIndex()));
            setting.setColorScheme(value);
        }
    });

    box.setTitle("Color theme of the words");
    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;
}
 

private Widget createMinLengthField()
{
    final IntegerBox box = new IntegerBox();
    box.setValue(setting.getMinWordLength());
    box.setMaxLength(2);
    box.setWidth("15px");

    box.addChangeHandler(new ChangeHandler()
    {
        @Override
        public void onChange(ChangeEvent event)
        {
            setting.setMinWordLength(box.getValue());
        }
    });

    box.setTitle("Specify the minimum number of characters in a word");
    return box;
}
 

@UiHandler("metricSelector")
public void onMetricSelected(ChangeEvent changeEvent) {

    // Dispose the current metric chart
    currentMetricChart.close();
    displayerCoordinator.removeDisplayer(currentMetricChart);

    // Create the metric chart
    String title = metricSelector.getValue(metricSelector.getSelectedIndex());
    currentMetricChart = createChartMetric(title);
    currentMetricChart.draw();
    displayerCoordinator.addDisplayer(currentMetricChart);

    // Update the dashboard view
    metricChartPanel.clear();
    metricChartPanel.add(currentMetricChart);
}
 

@Override
boolean dispatch(ChangeEvent event, Element context, WaveChangeHandler handler) {
  Timer timer = null;
  if (Timing.isEnabled()) {
    Timing.enterScope();
    timer = Timing.start("Mouse event dispatch");
  }
  try {
    return handler.onChange(event, context);
  } finally {
    if (timer != null) {
      Timing.stop(timer);
      Timing.exitScope();
    }
  }
}
 

/**
 * Init etl program widget' right grid panel
 */
public void init_rightGrid(){
	Label table = new Label("table");
	Label column = new Label("column");
	Label format = new Label("format");
	rightGrid = new Grid(3,2);
	rightGrid.setWidget(1,0,table);
	tableLB = new DescListBox();
	tableLB.setVisibleItemCount(1);
	tableLB.setStyleName("bda-etlpanel-listbox");
	rightGrid.setWidget(1,1,tableLB);

	rightGrid.setWidget(2,0,column);
	columnLB = new DescListBox();
	columnLB.setMultipleSelect(true);
	columnLB.setVisibleItemCount(2);
	columnLB.setStyleName("bda-etlpanel-Multilistbox");
	rightGrid.setWidget(2,1,columnLB);

	rightGrid.setWidget(0,0,format);
	formatLB = new DescListBox();
	formatLB.addItem("json");
	formatLB.addItem("tsv");
	formatLB.addItem("csv");
	formatLB.addItem("parquet");
	formatLB.setVisibleItemCount(1);
	formatLB.setStyleName("bda-etlpanel-listbox");
	rightGrid.setWidget(0,1,formatLB);
	mid_westPanel.add(rightGrid);

	tableLB.addChangeHandler(new ChangeHandler() {
		@Override
		public void onChange(ChangeEvent changeEvent) {
			getColumn();
		}
	});
}
 

/**
 * 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;
}
 

@Override
public void onChange(ChangeEvent event) {
    if (!isEnabled() || isReadonly()) {
        return;
    }

    super.onChange(event);
}
 

public void testChangeHandler() {
    MaterialRange range = getWidget();

    final boolean[] firedEvent = {false};
    range.addChangeHandler(changeEvent -> firedEvent[0] = true);
    ChangeEvent.fireNativeEvent(Document.get().createChangeEvent(), range.getRangeInputElement());
    assertTrue(firedEvent[0]);
}
 

private FormPanel getFilePanel() {
	VerticalLayoutContainer layoutContainer = new VerticalLayoutContainer();

	file = new FileUploadField();

	file.addChangeHandler(new ChangeHandler() {
		@Override
		public void onChange(ChangeEvent event) {
			setAutoFormat(file.getValue());
			String name = file.getValue().substring(0, file.getValue().lastIndexOf("."));
			name = name.substring(file.getValue().lastIndexOf("\\") +1);
			layerName.setText(name);
		}
	});

	file.setName(UIMessages.INSTANCE.gdidFileUploadFieldText());
	file.setAllowBlank(false);

	layoutContainer.add(new FieldLabel(file, UIMessages.INSTANCE.file()),
			new VerticalLayoutData(-18, -1));
	layoutContainer.add(new Label(UIMessages.INSTANCE.maxFileSizeText()),
			new VerticalLayoutData(-18, -1));

	uploadPanel = new FormPanel();
	uploadPanel.setMethod(Method.POST);
	uploadPanel.setEncoding(Encoding.MULTIPART);
	uploadPanel.setAction("fileupload.do");
	uploadPanel.setWidget(layoutContainer);

	return uploadPanel;
}
 

public MyCell(CurriculumInterface curriculum, CurriculumClassificationInterface classification) {
	iCurriculum	= curriculum;
	iClasf = classification;
	
	iPanel = new HorizontalPanel();
	
	iTextBox = new UniTimeTextBox(6, ValueBoxBase.TextAlignment.RIGHT);
	iTextBox.addChangeHandler(new ChangeHandler() {
		@Override
		public void onChange(ChangeEvent event) {
			try {
				if (iTextBox.getText().isEmpty()) {
					iClasf.setExpected(null);
				} else {
					iClasf.setExpected(Integer.valueOf(iTextBox.getText()));
				}
			} catch (Exception e) {
				iClasf.setExpected(null);
			}
			update();
			for (MySumCell sum: iSums)
				sum.update();
		}
	});
	
	iRearLabel = new HTML("", false);
	iRearLabel.setWidth("50px");
	iRearLabel.setStyleName("unitime-Label");
	iRearLabel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_RIGHT);
	
	iPanel.add(iTextBox);
	iPanel.setCellVerticalAlignment(iTextBox, HasVerticalAlignment.ALIGN_MIDDLE);
	
	iPanel.add(iRearLabel);
	iPanel.setCellVerticalAlignment(iRearLabel, HasVerticalAlignment.ALIGN_MIDDLE);

	initWidget(iPanel);	
	
	update();
}
 

public ShareTextBox(int column, Float share, Float defaultShare) {
	super(6, ValueBoxBase.TextAlignment.RIGHT);
	iColumn = column;
	iShare = share;
	iDefaultShare = defaultShare;
	addChangeHandler(new ChangeHandler() {
		@Override
		public void onChange(ChangeEvent event) {
			try {
				if (getText().isEmpty()) {
					iShare = null;
				} else if (getText().endsWith("%")) {
					iShare = (float)NF.parse(getText().substring(0, getText().length() - 1)) / 100.0f;
					if (iShare > 1.0f) iShare = 1.0f;
					if (iShare <= 0.0f) iShare = 0.0f;
				} else {
					Integer exp = iClassifications.getExpected(iColumn);
					if (exp == null || exp == 0)
						iShare = (float)NF.parse(getText()) / 100.0f;
					else
						iShare = (float)NF.parse(getText()) / iClassifications.getExpected(iColumn);
					if (iShare > 1.0f) iShare = 1.0f;
					if (iShare < 0.0f) iShare = 0.0f;
				}
			} catch (Exception e) {
				iShare = null;
			}
			update();
		}
	});
	update();
}
 

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();
}
 

@Override
public void onChange(ChangeEvent event) {
  if (query.getValue() == null || query.getValue().isEmpty()) {
    query.setText(DEFAULT_QUERY);
  }
  onQuery();
}
 

private void setupLocaleSelect() {
  final SelectElement select = (SelectElement) Document.get().getElementById("lang");
  String currentLocale = LocaleInfo.getCurrentLocale().getLocaleName();
  String[] localeNames = LocaleInfo.getAvailableLocaleNames();
  for (String locale : localeNames) {
    if (!DEFAULT_LOCALE.equals(locale)) {
      String displayName = LocaleInfo.getLocaleNativeDisplayName(locale);
      OptionElement option = Document.get().createOptionElement();
      option.setValue(locale);
      option.setText(displayName);
      select.add(option, null);
      if (locale.equals(currentLocale)) {
        select.setSelectedIndex(select.getLength() - 1);
      }
    }
  }
  EventDispatcherPanel.of(select).registerChangeHandler(null, new WaveChangeHandler() {

    @Override
    public boolean onChange(ChangeEvent event, Element context) {
      UrlBuilder builder = Location.createUrlBuilder().setParameter(
              "locale", select.getValue());
      Window.Location.replace(builder.buildString());
      localeService.storeLocale(select.getValue());
      return true;
    }
  });
}
 

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;
}
 

protected SingleListBox(boolean addMissingValue, boolean isMultipleSelect) {
super(isMultipleSelect);
setAddMissingValue(addMissingValue);

// Listen to our own change events and broadcast as
// ValueChangeEvent<String>
addChangeHandler(new ChangeHandler() {
           @Override
           public void onChange(ChangeEvent event) {
               ValueChangeEvent.fire(SingleListBox.this, getValue());
           }
});        
   }
 

@Override
public void init(final RendererSelector presenter) {
    this.presenter = presenter;
    initWidget(uiBinder.createAndBindUi(this));

    listBox.addChangeHandler(new ChangeHandler() {
        public void onChange(ChangeEvent event) {
            presenter.onRendererSelected();
        }
    });
}
 

@Override
public void setFilterEnabled(boolean enabled) {
    if (enabled) {
        listBox.addChangeHandler(new ChangeHandler() {
            public void onChange(ChangeEvent event) {
                getPresenter().onItemSelected();
            }
        });
    }
}
 

UploadForm() {
	this.formPanel.getElement().getStyle().setHeight(0, Unit.PX);
	this.formPanel.getElement().getStyle().setWidth(0, Unit.PX);
	this.formPanel.getElement().getStyle().setOverflow(Overflow.HIDDEN);
	this.formPanel.add(this.fileUpload);

	this.fileUpload.setName("data");

	this.handlerRegistrations.add(this.fileUpload.addChangeHandler(new ChangeHandler() {
		@Override
		public void onChange(ChangeEvent event) {
			uploadData(fileUpload.getElement());
		}
	}));
}
 

@Override
public void onChange(ChangeEvent event) {
  if (query.getValue() == null || query.getValue().isEmpty()) {
    query.setText(DEFAULT_QUERY);
  }
  onQuery();
}