I have the following cellValueFactory on treeView to add contextMenu and dragAndDrop functionality:
treeView.setCellFactory(new Callback<TreeView<String>, TreeCell<String>>() {
#Override
public TreeCell<String> call(TreeView<String> stringTreeView) {
TreeCell<String> treeCell = new TreeCell<String>() {
#Override
protected void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (!empty && item != null) {
setText(item);
setGraphic(getTreeItem().getGraphic());
final ContextMenu contextMenu = new ContextMenu();
MenuItem item2 = new MenuItem("Delete");
item2.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent e) {
System.out.println("Here I will add some delete functionality");
}
});
contextMenu.getItems().addAll(item2);
treeView.setContextMenu(contextMenu);
setContextMenu(contextMenu);
} else {
setText(null);
setGraphic(null);
}
}
};
addDragAndDrop(treeCell);
treeView.setEditable(true);
return treeCell;
}
});
The drag and drop works great, and the contextMenu shows up, but it shows up on everything I right click on inside the treeview. How can I make it only appear when the user is actually right clicking an item in the treeview?
You're setting the context menu on both the TreeView and the TreeCell. Just set it on the TreeCell. Also, you should remove it in the case that the cell is empty:
protected void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (!empty && item != null) {
setText(item);
setGraphic(getTreeItem().getGraphic());
final ContextMenu contextMenu = new ContextMenu();
MenuItem item2 = new MenuItem("Delete");
item2.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent e) {
System.out.println("Here I will add some delete functionality");
}
});
contextMenu.getItems().addAll(item2);
// remove this line:
//treeView.setContextMenu(contextMenu);
setContextMenu(contextMenu);
} else {
setText(null);
setGraphic(null);
setContextMenu(null);
}
}
Related
I'm trying to add a context menu for every individual cell in a column, that gets activated by rightclicking on the cell. The menuitems would also depend on the cell clicked.
I would think using a cell factory would be the best way, but I cant figure out how to do it.
Edit: This is my implementation for one of my columns. setText in updateItem() adds the text to my column, but I want to add it as a label, how should I do that?
moColumn = new TableColumn<>("Maandag");
moColumn.setSortable(false);
moColumn.setCellValueFactory(new PropertyValueFactory<>("Mo"));
getColumns().add(moColumn);
moColumn.setCellFactory(new Callback<TableColumn<RowData, Label>, TableCell<RowData, Label>>() {
#Override
public TableCell<RowData, Label> call(TableColumn<RowData, Label> col) {
final TableCell<RowData, Label> cell = new TableCell<RowData, Label>() {
#Override
protected void updateItem(Label item, boolean empty) {
super.updateItem(item, empty);
if(empty){
setText(null);
} else {
setText(item.getText());
}
}
};
//cell.textProperty().bind(cell.getItem().textProperty());
cell.setOnMouseClicked(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent event) {
if(event.getButton() == MouseButton.SECONDARY){
ContextMenu contextMenu = new ContextMenu();
MenuItem menuItem = new MenuItem(cell.getText());
contextMenu.getItems().add(menuItem);
cell.setContextMenu(contextMenu);
}
}
});
return cell;
}
});
Edit: How can I right click on a cell in tableview in Javafx (fxml)?
I've found this, but the link to the blog isn't working anymore...
Changed:
#Override
protected void updateItem(Label item, boolean empty) {
super.updateItem(item, empty);
if(empty){
setText(null);
} else {
setText(item.getText());
}
}
To:
#Override
protected void updateItem(Label item, boolean empty) {
super.updateItem(item, empty);
if(empty){
setText(null);
} else {
setGraphic(item);
}
}
I have an ImageView with an Image inside it and when the image is clicked, a MouseClicked event should be triggered. However, the application is not even printing the test line.
Image cancel = new Image("/cancel.svg.png", 15, 15, false, false);
ImageView view = new ImageView(cancel);
view.setPickOnBounds(true);
view.setOnMouseClicked(new EventHandler<MouseEvent>(){
#Override
public void handle(MouseEvent event) {
System.out.println("hi");
/** execute code **/
}
});
Complete version:
I have a ListView called "found_tags_list" and every cell inside that ListView should be a new class called: "ButtonListCell". I did this to add extra content to the cells based on some statements.
found_tags_list.setCellFactory(new Callback<ListView<String>, ListCell>() {
#Override
public ListCell call(ListView<String> param) {
return new ButtonListCell();
}
});
Entire Cell class:
class ButtonListCell extends ListCell<String> {
#Override
public void updateItem(String obj, boolean empty) {
super.updateItem(obj, empty);
if (obj == null || obj.isEmpty() || empty) {
setText(null);
setGraphic(null);
} else {
setText(obj);
if (valid_tags.indexOf(obj) >= 0) {
setTextFill(Color.GREEN);
setGraphic(null);
} else {
Image cancel = new Image("/cancel.png", 15, 15, false, false);
ImageView view = new ImageView(cancel);
view.setPickOnBounds(true);
view.setOnMouseClicked(new EventHandler<MouseEvent>(){
#Override
public void handle(MouseEvent event) {
System.out.println("hi");
String item = getItem();
found_tags_list.getItems().remove(item);
for (Tag tag : rfidset) {
if (tag.getId().equals(item)) {
rfidset.remove(tag);
return;
}
}
}
});
setGraphic(view);
setTextFill(Color.RED);
setContentDisplay(ContentDisplay.RIGHT);
}
}
}
I have method that make a TableColumn editable that I made according to this tutorial, with the two changes recommended in this question witch are changing focusedProperty with setOnAction and add binding. The method is like this:
public static <T> void setAutoCompleteTableColumn(TableColumn<T,String> column, BiConsumer<T, String> field, String type, BiConsumer handleUpdates, List autoComplete){
column.setCellFactory(param -> {
return new TableCell<T, String>(){
private TextField textField;
#Override
public void startEdit() {
super.startEdit();
createTextField();
setText(null);
setGraphic(textField);
textField.selectAll();
}
#Override
public void cancelEdit() {
super.cancelEdit();
setText((String) getItem());
setGraphic(null);
}
#Override
protected void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (empty) {
setText(null);
setGraphic(null);
} else {
if (isEditing()) {
if (textField != null) {
textField.setText(getString());
}
setText(null);
setGraphic(textField);
} else {
setText(getString());
setGraphic(null);
}
}
}
private void createTextField(){
textField = new TextField(getString());
textField.setMinWidth(this.getWidth() - this.getGraphicTextGap()* 2);
textField.setOnAction(event ->{
if(textField.getText() != ""){
commitEdit(textField.getText());
}
});
AutoCompletionBinding<T> binding = TextFields.bindAutoCompletion(textField,autoComplete);
}
private String getString() {
return getItem() == null ? "" : getItem().toString();
}
};
});
column.setOnEditCommit(event -> {
T model = event.getRowValue();
if (!event.getNewValue().isEmpty()) {
Cloner cloner = new Cloner();
final T oldModel = cloner.deepClone(model);
//Update the old value with the new value
field.accept(model, event.getNewValue());
//Retrieve changes
handleUpdates.accept(oldModel, model);
}
});
}
I use this method in the controller like this:
TableColumn<Purchase, String> nameColumn = new TableColumn<>();
setAutoCompleteTableColumn(nameColumn, (p,s) -> validatePurchaseEdit(p,s), "text", (o, n) -> updateTracker(o, n), appState.items);
I have a button click event that switch the TableView editable to false.
For some reason when this event is executed the current cell that I am editing does commit edit but an other cell(a random one) switches to edit mode. Can some one explain what is happening, and how can I make all cells commit edit?
I want to make a custom TableColumn that when in editable state it's cells will be auto complete TextFields, here is what I tried:
public static <T,S> void setAutoCompleteTableColumn(TableColumn<T,S> column, List items){
column.setCellFactory(param -> {
return new TableCell<T, S>(){
final TextField textField = new TextField();
#Override
protected void updateItem(S item, boolean empty) {
super.updateItem(item, empty);
if(item == null){
setGraphic(null);
}else {
setGraphic(textField);
AutoCompletionBinding<T> binding = TextFields.bindAutoCompletion(textField,items);
binding.setOnAutoCompleted(event ->{
//handleCompleted.accept(event.getCompletion());
});
}
}
};
});
}
This code have produced (obviously) this:
But I want this form only when the TableView is in edit mode, So I did this instead:
public static <T,S> void setAutoCompleteTableColumn(TableColumn<T,S> column, List items){
column.setCellFactory(param -> {
return new TableCell<T, S>(){
final TextField textField = new TextField();
#Override
protected void updateItem(S item, boolean empty) {
super.updateItem(item, empty);
if(item == null){
setGraphic(null);
}else {
editableProperty().addListener((obs, oldValue, newValue)->{
if(newValue){
setGraphic(textField);
}else{
setText(item.toString());
}
});
AutoCompletionBinding<T> binding = TextFields.bindAutoCompletion(textField,items);
binding.setOnAutoCompleted(event ->{
//handleCompleted.accept(event.getCompletion());
});
}
}
};
});
}
As you can see I added a listener to editableProperty, which resulted in nothing.
What I want is an editable TableColumn like in here, but with auto complete TextField. Any idea how to accomplish this?
I have this basic code which adds drag and drop functionality to tree views.
The code works just fine, but when one treeitem is dragged, dropped and added over to another treeitem, the graphic on the treeitem in the original treecell dissapears, while the graphic follows the dragged element and is visible in the new treeitem.
See the image for example, the treeitem "Name" has been dragged over to "Column Name" and lost it's graphic. Alltough the new TreeItem under "Column Name" still has it graphics.
The code for adding drag and drop is this:
private void addDragAndDrop(TreeCell<String> treeCell, MainFXMLController mainFXMLController) {
treeCell.setOnDragDetected(new EventHandler<MouseEvent>() {
#Override
public void handle(MouseEvent event) {
System.out.println("setOnDragDetected");
Dragboard db = treeCell.startDragAndDrop(TransferMode.ANY);
ClipboardContent content = new ClipboardContent();
content.putString(event.toString());
db.setContent(content);
DRAGGEDSOURCE = treeCell;
DRAGGEDINDEX = (treeCell.getTreeView().getSelectionModel().getSelectedIndex());
}
});
treeCell.setOnDragOver(new EventHandler<DragEvent>() {
//brukeren har dragget det over et element
public void handle(DragEvent event) {
DRAGGEDTARGET = treeCell.getTreeItem();
if (event.getGestureSource() != treeCell
&& event.getDragboard().hasString()) {
event.acceptTransferModes(TransferMode.COPY_OR_MOVE);
}
}
});
treeCell.setOnDragDropped(new EventHandler<DragEvent>() {
public void handle(DragEvent event) {
DRAGGEDTARGET.getChildren().add(DRAGGEDSOURCE.getTreeItem());
}
);
}
public void makeTreeViewDragAble(TreeView treeView, MainFXMLController mainFXMLController) {
treeView.setCellFactory(new Callback<TreeView<String>, TreeCell<String>>() {
#Override
public TreeCell<String> call(TreeView<String> stringTreeView) {
TreeCell<String> treeCell = new TreeCell<String>() {
#Override
protected void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (!empty && item != null) {
setText(item);
setGraphic(getTreeItem().getGraphic());
} else {
setText(null);
setGraphic(null);
}
}
};
addDragAndDrop(treeCell, mainFXMLController);
treeView.setEditable(true);
return treeCell;
}
});
}
As #James_D and I have concluded on, this is because I am trying to have two instances of the imageView. The solution is to set a new image view on the old item.