Monday, May 13, 2013

Hide empty cell of TableView with CSS

Similar to the post "Apply style sheet on ListView to hide empty cells", we can create our custom css to set a specific color for all empty.

Hide empty cell of TableView with CSS
Hide empty cell of TableView with CSS


Modify from last article "Detect mouse click on JavaFX TableView and get the details of the clicked item".

Create javafx_testtableview/style_tableview.css file, copy the code from Example 26-3 Setting Color for Empty Rows in a Table View of Customization of UI Controls.
.table-row-cell:empty {
    -fx-background-color: lightyellow;
}
 
.table-row-cell:empty .table-cell {
    -fx-border-width: 0px;
}


Apply css file on the TabletView, by calling:

tableView.getStylesheets().add("javafx_testtableview/style_tableview");

Also modify handle(MouseEvent t) of MyEventHandler to check IndexOutOfBoundsException on recordList.get(index).

package javafx_testtableview;

import javafx.application.Application;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.TableCell;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.util.Callback;

/**
 * @web http://java-buddy.blogspot.com/
 */
public class JavaFX_TestTableView extends Application {

    public static class Record {

        private final SimpleIntegerProperty id;
        private final SimpleStringProperty name;
        private final SimpleStringProperty lastName;
        private final SimpleStringProperty email;

        private Record(int id, String name, String lastName, String email) {
            this.id = new SimpleIntegerProperty(id);
            this.name = new SimpleStringProperty(name);
            this.lastName = new SimpleStringProperty(lastName);
            this.email = new SimpleStringProperty(email);
        }

        public int getId() {
            return this.id.get();
        }

        public void setId(int id) {
            this.id.set(id);
        }

        public String getName() {
            return this.name.get();
        }

        public void setName(String name) {
            this.name.set(name);
        }

        public String getLastName() {
            return this.lastName.get();
        }

        public void setLastName(String lastName) {
            this.lastName.set(lastName);
        }

        public String getEmail() {
            return this.email.get();
        }

        public void setEmail(String email) {
            this.email.set(email);
        }
    }
    private TableView<Record> tableView = new TableView<>();
    private final ObservableList<Record> recordList = FXCollections.observableArrayList();

    private void prepareRecordList() {
        recordList.add(new Record(12, "William", "Austin", "xxx@xxx.xxx"));
        recordList.add(new Record(15, "Chris", "redfield", "yyy@yyy.yyy"));
        recordList.add(new Record(1, "Java", "Buddy", "javabuddy@abc.yyy"));
    }

    @Override
    public void start(Stage primaryStage) {
        Scene scene = new Scene(new Group());
        primaryStage.setTitle("http://java-buddy.blogspot.com/");
        primaryStage.setWidth(400);
        primaryStage.setHeight(500);

        prepareRecordList();

        tableView.setEditable(false);

        Callback<TableColumn, TableCell> integerCellFactory =
                new Callback<TableColumn, TableCell>() {
            @Override
            public TableCell call(TableColumn p) {
                MyIntegerTableCell cell = new MyIntegerTableCell();
                cell.addEventFilter(MouseEvent.MOUSE_CLICKED, new MyEventHandler());
                return cell;
            }
        };

        Callback<TableColumn, TableCell> stringCellFactory =
                new Callback<TableColumn, TableCell>() {
            @Override
            public TableCell call(TableColumn p) {
                MyStringTableCell cell = new MyStringTableCell();
                cell.addEventFilter(MouseEvent.MOUSE_CLICKED, new MyEventHandler());
                return cell;
            }
        };

        TableColumn colId = new TableColumn("ID");
        colId.setCellValueFactory(
                new PropertyValueFactory<Record, String>("id"));
        colId.setCellFactory(integerCellFactory);

        TableColumn colName = new TableColumn("Name");
        colName.setCellValueFactory(
                new PropertyValueFactory<Record, String>("name"));
        colName.setCellFactory(stringCellFactory);

        TableColumn colLastName = new TableColumn("Last Name");
        colLastName.setCellValueFactory(
                new PropertyValueFactory<Record, String>("lastName"));
        colLastName.setCellFactory(stringCellFactory);

        TableColumn colEmail = new TableColumn("Email");
        colEmail.setCellValueFactory(
                new PropertyValueFactory<Record, String>("email"));
        colEmail.setCellFactory(stringCellFactory);

        tableView.setItems(recordList);
        tableView.getColumns().addAll(colId, colName, colLastName, colEmail);

        tableView.getStylesheets().add("javafx_testtableview/style_tableview");

        final VBox vbox = new VBox();
        vbox.setSpacing(5);
        vbox.setPadding(new Insets(10, 0, 0, 10));
        vbox.getChildren().add(tableView);

        ((Group) scene.getRoot()).getChildren().addAll(vbox);

        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }

    class MyIntegerTableCell extends TableCell<Record, Integer> {

        @Override
        public void updateItem(Integer item, boolean empty) {
            super.updateItem(item, empty);
            setText(empty ? null : getString());
            setGraphic(null);
        }

        private String getString() {
            return getItem() == null ? "" : getItem().toString();
        }
    }

    class MyStringTableCell extends TableCell<Record, String> {

        @Override
        public void updateItem(String item, boolean empty) {
            super.updateItem(item, empty);
            setText(empty ? null : getString());
            setGraphic(null);
        }

        private String getString() {
            return getItem() == null ? "" : getItem().toString();
        }
    }

    class MyEventHandler implements EventHandler<MouseEvent> {

        @Override
        public void handle(MouseEvent t) {
            TableCell c = (TableCell) t.getSource();
            int index = c.getIndex();

            try {
                Record item = recordList.get(index);
                System.out.println("id = " + item.getId());
                System.out.println("name = " + item.getName());
                System.out.println("lastName = " + item.getLastName());
                System.out.println("email = " + item.getEmail());
            } catch (IndexOutOfBoundsException exception) {
                //...
            }

        }
    }
}


5 comments:

  1. hi man!thanks a lot.
    now i want to set a specific color for all empty column,i have try again and again,but still could solve the problem.

    could u give me some suggestion?

    ReplyDelete
    Replies
    1. hi,thank you for your reply!
      Maybe i didn't wrote my question clearly.
      i mean i want to set a specific color for all empty column like this:

      old

      new

      Delete
    2. This comment has been removed by the author.

      Delete
  2. hi,thank you for your reply.
    what i want like this

    not this

    ReplyDelete