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Enum based Combobox

cmbSablonSecim = new ComboBox<>();
cmbSablonSecim.setItems(EnumSablonSecim.values());
My combo box --> TUMU,GRAFIK,DAGILIM
I want fill my combobox with Enum->islemAdi
Combobox --> Tümü,Grafik,Dağılım (Enum->islemAdi)
public enum EnumSablonSecim {
TUMU(0, "Tümü"),
GRAFIK(1, "Grafik"),
DAGILIM(2, "Dağılım")
;
private final Integer islemKodu;
private final String islemAdi;
private EnumSablonSecim(Integer islemKodu, String islemAdi) {
this.islemKodu = islemKodu;
this.islemAdi = islemAdi;
}
public Integer getIslemKodu() {
return islemKodu;
}
public String getIslemAdi() {
ResourceBundle messages = I18n.getInstance(this.getClass());
if (messages.containsKey(islemAdi)) {
return messages.getString(islemAdi);
} else {
return islemAdi;
}
}
public static EnumSablonSecim get(Integer islemKodu) {
for (EnumSablonSecim enumSablonSecim : EnumSablonSecim.values()) {
if (enumSablonSecim.islemKodu == islemKodu) {
return enumSablonSecim;
}
}
return null;
}
}
My combobox must return (islemAdi).is it possible or not? Thank you...

ComboBox::setItemLabelGenerator
Are you asking if you can show the islemAdi field as the label in the combo box?
You can specify code to generate a label used for displaying each item in your enum. Call ComboBox::setItemLabelGenerator. Pass a method reference for your getter. Vaadin then calls this method as needed to display each item.
cmbSablonSecim.setItemLabelGenerator(EnumSablonSecim::getIslemAdi);
See Showing a List of Data with Data Providers in the manual.

Converting List<ClassName> to array object to set as JComboBoxModel

I am designing classes based on DAO Pattern.
I have 3 classes and 1 GUI Form.
public interface SchoolYearDao {
List<SchoolYear> getAllSchoolYearInfo();
List<SchoolYear> getAllSchoolYearStart();
List<SchoolYear> getAllSchoolYearEnd();
List<SchoolYear> getSchoolYearById(int aSchoolYearId);
int getSchoolYearId(SchoolYear schoolyear);
boolean addSchoolYear(SchoolYear schoolyear);
}
public class SchoolYear {
//setters and getters
}
public class SchoolYearDaoImpl implements SchoolYearDao{
#Override
public List<SchoolYear> getAllSchoolYearStart() {
List<SchoolYear> listOfSchoolYearStart = new ArrayList<>();
SchoolYear mySchoolYear = new SchoolYear();
String SQL = "{CALL getAllSchoolYearInfo()}";
try(Connection con = DBUtil.getConnection(DBType.MYSQL);
CallableStatement cs = con.prepareCall(SQL);) {
try(ResultSet rs = cs.executeQuery();){
while(rs.next()){
mySchoolYear.setStart(rs.getInt("yearFrom"));
}
listOfSchoolYearStart.add(mySchoolYear);
}
} catch (SQLException e) {
JOptionPane.showMessageDialog(null,e.getMessage());
}
System.out.println(listOfSchoolYearStart);
return listOfSchoolYearStart;
}
}
The problem is with the GUI.
public class SchoolYearGUI extends javax.swing.JPanel {
public SchoolYearGUI() {
initComponents();
schoolYearStartJcbx.setModel(new DefaultComboBoxModel(schoolyear.getAllSchoolYearInfo().toArray());
schoolYearEndJcbx.setModel(new DefaultComboBoxModel(schoolyear.getAllSchoolYearEnd().toArray()));
}
}
I can't get the years to show correctly. I get this.
Instead of the actual integer numbers 2015,2016,2017 and so on...
I research online and found similar problems but most of them were not using a list of class as List<SchoolYear>. In this case, "SchoolYear" is the name of class.
I used toArray(); and tried Arrays.toString(array); but can't get it right.
I thought I'd change the return type to DefaultComboBoxModel of getAllSchoolYearStart() method but I realized I have to keep my List<SchoolYear> as return type in case I need to use the result set as model for JTables etc..
So, I want to just stick with List<SchoolYear> as return type. (If it's a good idea?)
What is the best way to get the actual value?
Thanks in advance.
=============== Solution ==============================
Thanks to MadProgrammer for the advice and to other answerers.
So I studied the listcellrenderer overnight and finally got the basic idea of how to use it.
public MainFrame() {
initComponents();
SchoolYearDaoImpl sy = new SchoolYearDaoImpl();
DefaultComboBoxModel model = new DefaultComboBoxModel(sy.getAllSchoolYearStart().toArray());
jcmbSchoolYearStart.setModel(model);
jcmbSchoolYearStart.setRenderer(new DefaultListCellRenderer() {
#Override
public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
if(value instanceof SchoolYear){
SchoolYear schoolyear = (SchoolYear) value;
setText(""+schoolyear.getStart());
}
return this;
}
} );
}
I overridden the getListCellRendererComponent and created an if-statement to test if value is an instance of my class which is "SchoolYear" Then I cast whatever the raw value is to SchoolYear then used the getter of SchoolYear model, getStart() to get the value stored in the list.
I'm now moving the renderer to an external class file in my project.

Exactly as #MadProgrammer said, in new DefaultComboBoxModel(schoolyear.getAllSchoolYearInfo().toArray(), you put in an array of Objects, and the constructor of a JComboBox will try to use the toString() method to convert every instance of SchoolYear to present it as plain text. If you don't overwrite the default toString() method to present it as you like, you will see what you see in the combobox you have now: the class's name with some numbers.
You can implement the toString() method, but it's not the best way. You can construct some utility method, along with getSchoolYearId() you have, to get the ID of every object in the List and fill an array with the IDs.
private int[] getIDAndFillAnArray(List<SchoolYear> syrs) {
int[] ids = new int[syrs.size()];
for (int i=0; i<syrs.size(); i++) {
ids[i] = syrs.get(i).getSchoolYearId();
}
return ids;
}
And just use it like:
schoolYearStartJcbx.setModel(new DefaultComboBoxModel(getIDAndFillAnArray(schoolyear.getAllSchoolYearInfo()));
That's simple enough.

Use this class:
public class ComboItem {
private String value;
private String label;
public ComboItem(String value, String label) {
this.value = value;
this.label = label;
}
public String getValue() {
return this.value;
}
public String getLabel() {
return this.label;
}
#Override
public String toString() {
return label;
}
}
Put this method where you connect to your DB:
public ComboItem[] getListOfSchoolYearStart(params..)
{
List<ComboItem> result = new ArrayList<ComboItem>();
ComboItem[] items;
.....
rs = stmt.executeQuery(query);
while (rs.next()) {
ComboItem item = new ComboItem(rs.getInt("id_school") + "", rs.getString("description"));
result.add(item);
}
items = result.toArray(new ComboItem[result.size()]);
return items;
}
Add your JComboBox:
private ComboItem[] listOfSchoolYearStart;
private int selectedIdSchool=-1;
....
listOfSchoolYearStart= getListOfSchoolYearStart();
JComboBox comboList = new JComboBox(listOfSchoolYearStart);
//If you want to keep previous selection
if (listOfSchoolYearStart.length > 0)
{
boolean isFound=false;
for (ComboItem comb : listOfSchoolYearStart) {
if(Integer.parseInt(comb.getValue())==selectedIdSchool)
{
comboList.setSelectedItem(comb);
isFound=true;
break;
}
}
if(!isFound)
{
comboList.setSelectedIndex(0);
selectedIdSchool=Integer.parseInt(listOfSchoolYearStart[0].getValue());
}
}
This works for me at least, I hope it helps.

TableView doesn't refresh

I've got a project written in JavaFX and I'm trying to get a refresh on a tableview without result.
I've googled around and tried some examples I've found but it still doesn't work.
I populate a tableview with information each row in this table can have new comments added to by double click on the row. The a new Tabpane is opened and the new comment can be added there. On close of this tabpane I'd like the one I clicked from to be refreshed.
I must be doing something wrong. I just don't know what.
In my StoreController
private void populateTableView(List<Store> stores) {
ObservableList<Store> data = FXCollections.observableArrayList(stores);
storeNumberColumn.setCellValueFactory(
new PropertyValueFactory<Store, String>("id"));
storePhoneColumn.setCellValueFactory(
new PropertyValueFactory<Store, String>("phoneNbr"));
chainColumn.setCellValueFactory(
new PropertyValueFactory<Store, String>("chainId"));
commentColumn.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<Store, ImageView>, ObservableValue<String>>() {
#Override
public ObservableValue<String> call(TableColumn.CellDataFeatures<Store, ImageView> p) {
Integer numberOfComments = p.getValue().getCommentsCount();
ReadOnlyObjectWrapper wrapper = null;
if (numberOfComments == 0) {
wrapper = null;
} else if (numberOfComments == 1) {
wrapper = new ReadOnlyObjectWrapper(new ImageView(COMMENT_SINGLE_FLAG_SOURCE));
} else {
wrapper = new ReadOnlyObjectWrapper(new ImageView(COMMENT_DOUBLE_FLAG_SOURCE));
}
return wrapper;
}
});
storeTable.setItems(data);
sortTable(storeTable, missedColumn);
}
#FXML
public void handleTableAction(MouseEvent event) {
if (event.getClickCount() == 2) {
showNewCommentStage();
}
}
private void showNewCommentStage() {
initCommentController();
Store store
= storeTable.getSelectionModel().selectedItemProperty().getValue();
commentController.showNewStage(commentPane, store);
}
It seems like the call-function doesn't get called when the commentpane is closed.
CommentController
public void showNewStage(Pane pane, Store store) {
this.store = store;
initStage(pane);
windowHandler = new WindowHandler(stage);
effectHandler.playEffect(pane);
constructCommentHeaders();
List<Comment> comments;
comments = commentService.listByStoreId(store.getId());
populateCommentTable(comments);
}
Like I said I've tried a lot of the solutions found here on Stackoverflow but with no results. The Tableview doesn't refresh. The Stores and the Comments are in different database tables if that's important
Can someone point me in the right direction?
Thanks!
****EDIT****
The Store.class
public class Store extends CommentEntity {
private String id;
private String chainId;
private String phoneNbr;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getChainId() {
return chainId;
}
public void setChainId(String chainId) {
this.chainId = chainId;
}
public String getPhoneNbr() {
return phoneNbr;
}
public void setPhoneNbr(String phoneNbr) {
this.phoneNbr = phoneNbr;
}
#Override
public String toString() {
return "Store{" + "id=" + id + ", chainId=" + chainId + '}';
}
#Override
public String getCommentIdentifier() {
return id;
}
}
The CommentEntity.Class
public abstract class CommentEntity {
private int commentsCount;
public int getCommentsCount() {
return commentsCount;
}
public void setCommentsCount(int commentsCount) {
this.commentsCount = commentsCount;
}
public abstract String getCommentIdentifier();
}
Thank you for input, I hadn't even reflected over the ImageView / String.

Two issues:
First, you need to distinguish between the data the cells in your column are displaying, and the cells that actually display those data. The cellValueFactory determines the data that are displayed. The PropertyValueFactory is a cellValueFactory implementation that references a JavaFX Property, so when you call
storeNumberColumn.setCellValueFactory(new PropertyValueFactory<Store, String>("id"));
it effectively tells the cells in the storeNumberColumn to call the idProperty() method on the Store object in the current row to get the data for the cell. (If no such method exists, it will try to use getId() as a backup plan.)
By default, you get a cellFactory that displays text resulting from calling toString() on the data generated by the cellValueFactory. In the case where your data are simply Strings, this is usually what you need. In other cases, you often need to provide a cellFactory of your own to get the correct way to display the data.
In your case, the data for the commentColumn are simply the number of comments. You are going to display that by choosing an image based on that numeric value.
So you should have
TableColumn<Store, Number> commentColumn = new TableColumn<>("Comments");
For the cellValueFactory, you can just use
commentColumn.setCellValueFactory(new PropertyValueFactory<>("commentsCount"));
Then you need a cellFactory that displays the appropriate ImageView:
commentColumn.setCellFactory(new Callback<TableColumn<Store, Number>, new TableCell<Store, Number>>() {
#Override
public TableCell<Store, Number>() {
private ImageView imageView = new ImageView();
#Override
public void updateItem(Number numberOfComments, boolean empty) {
super.updateItem(count, empty) ;
if (empty) {
setGraphic(null);
} else {
if (numberOfComments.intValue() == 0) {
setGraphic(null);
} else if (numberOfComments.intValue() == 1) {
imageView.setImage(new Image(COMMENT_SINGLE_FLAG_SOURCE));
setGraphic(imageView);
} else {
imageView.setImage(new Image(COMMENT_DOUBLE_FLAG_SOURCE));
setGraphic(imageView);
}
}
}
}
});
The second issue is actually about the update. A TableView keeps its contents "live" by observing JavaFX properties that are provided by the cellValueFactory as ObservableValues. If the value might change while the table is displayed, you must provide an actual property that can be observed: using a ReadOnlyObjectWrapper is no good (because it's read only, so it's wrapped value will not change). The PropertyValueFactory will also return a ReadOnlyObjectWrapper if you do not have JavaFX property accessor methods (i.e. if it is only using getXXX() methods to access the data). So your model class must provide JavaFX Properties.
You can make an immediate fix to this by updating CommentEntity to use an IntegerProperty:
public abstract class CommentEntity {
private final IntegerProperty commentsCount = new SimpleIntegerProperty();
public final int getCommentsCount() {
return commentsCountProperty().get();
}
public final void setCommentsCount(int commentsCount) {
commentsCountProperty().set(commentsCount);
}
public IntegerProperty commensCountProperty() {
return commentsCount ;
}
public abstract String getCommentIdentifier();
}
I would also strongly recommend updating the Store class to use JavaFX Properties in a similar manner.

Add table column with BeanItemContainer

I should add a column to a table that has a BeanItemContainer datasource.
This is my situation:
I hava an entity bean
#Entity
public class MyBean implements {
#Id
private Long id;
//other properties
}
Then in my vaadin panel i have this method
private Table makeTable(){
Table table = new Table();
tableContainer = new BeanItemContainer<MyBean>(MyBean.class);
table.setContainerDataSource(tableContainer);
table.setHeight("100px");
table.setSelectable(true);
return table;
}
Now, I want to add a column that should give me the ability to delete an item in this container.
How can i do?

You could create a ColumnGenerator which creates the button for you.
Have a look here.
Example:
Let's say we have a MyBean class:
public class MyBean {
private String sDesignation;
private int iValue;
public MyBean() {
}
public MyBean(String sDesignation, int iValue) {
this.sDesignation = sDesignation;
this.iValue = iValue;
}
public String getDesignation() {
return sDesignation;
}
public int getValue() {
return iValue;
}
}
We then can create a table with a generated column giving a button to delete the current item.
Table table = new Table();
BeanItemContainer<MyBean> itemContainer = new BeanItemContainer<MyBean>(MyBean.class);
table.setContainerDataSource(itemContainer);
table.addItem(new MyBean("A", 1));
table.addItem(new MyBean("B", 2));
table.addGeneratedColumn("Action", new ColumnGenerator() { // or instead of "Action" you can add ""
#Override
public Object generateCell(final Table source, final Object itemId, Object columnId) {
Button btn = new Button("Delete");
btn.addClickListener(new ClickListener() {
#Override
public void buttonClick(ClickEvent event) {
source.removeItem(itemId);
}
});
return btn;
}
});
table.setVisibleColumns(new Object[]{"designation", "value", "Action"}); // if you added "" instead of "Action" replace it by ""

I would recommend using shourtcut instead:
table.addShortcutListener(new ShortcutListener("Delete", KeyCode.DELETE, null) {
#Override
public void handleAction(final Object sender,
final Object target) {
if (table.getValue() != null) {
// here send event to your presenter to remove it physically in database
// and then refresh the table
// or just call tableContainer.removeItem(itemId)
}
}
});
if you don't want shourtcuts you would need add the column, eg:
table.addContainerProperty("Delete", Button.class, null);
and then put there the button that would do the same action.

GWT CellTree #UIHandler SelectionChanged

I am using the GWT CellTree class and I want to be able to update another UI element on the page when the selection changes.
I have this:
#UiField (provided = true)
CellTree folderTree;
Which I populate with data on the page load, then I need the #UIiHandler, something like:
#UiHandler("folderTree")
void onTreeCellChange(????? e){
//update UI
}
I've already tried things like:
ValueChangeEvent<List<Folder>> //List<Folder> being the underlying class for the CellTree.
SelectionHandler<CellTree>
ClickEvent
In all the above cases, I get a Deferred binding failed on form load.
I feel like I am missing something simple, but cannot seem to find it with my google-fu.

You can add handler to NodeInfo of TreeViewModel of CellTree.
Here is example how it is possible to do:
First of all let's define what is folder:
// the simplest possible folder even without subfolders just to make example working
public class Folder {
private String name;
public Folder(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Let's say part of your ui.xml is the following:
<g:HorizontalPanel>
<cellview:CellTree ui:field="folderTree"/>
<g:Label ui:field="folderName"/>
</g:HorizontalPanel>
Than you have UiBinder:
public static interface Binder extends UiBinder<HorizontalPanel, BinderOwner> {}
Here is how you define FolerTreeModel that is required for your CellTree:
public static class FolderTreeModel implements TreeViewModel {
private final ListDataProvider<Folder> dataProvider;
private final CellPreviewEvent.Handler<Folder> folderSelectionHandler;
public FolderTreeModel(List<Folder> folders, CellPreviewEvent.Handler<Folder> folderSelectionHandler) {
this.folderSelectionHandler = folderSelectionHandler;
dataProvider = new ListDataProvider<Folder>(folders);
}
#Override
public <T> TreeViewModel.NodeInfo<?> getNodeInfo(T value) {
return new DefaultNodeInfo<Folder>(dataProvider, new AbstractCell<Folder>() {
// simple renderer that renders folder name
#Override
public void render(Context context, Folder value, SafeHtmlBuilder sb) {
sb.appendEscaped(value.getName());
}
},
new SingleSelectionModel<Folder>(), // using single selection model
folderSelectionHandler, // add handler to the node info
null); // value updater can be null
}
#Override
public boolean isLeaf(Object value) {
return false; // I will say that every node is not leaf for simplicity
}
}
And your BinderOwner class:
public static class BinderOwner {
#UiField(provided = true)
CellTree folderTree;
#UiField
Label folderName; //your other UI element that you will change: show the name of selected folder
public BinderOwner() {
//List of folders to show something
ArrayList<Folder> folders = new ArrayList<Folder>();
folders.add(new Folder("A"));
folders.add(new Folder("B"));
folders.add(new Folder("C"));
// define folder tree
folderTree = new CellTree(new FolderTreeModel(folders, new CellPreviewEvent.Handler<Folder>() {
// this is your handler
#Override
public void onCellPreview(CellPreviewEvent<Folder> event) {
// set folder name to label on folder selection
folderName.setText(event.getValue().getName());
}
}), null);
}
}