Saturday, August 31, 2013

Set background color of JavaFX ListView cells, with CSS

The old post show how to "Hide empty cell of TableView with CSS". This example apply similar approach, to set background color for various cells, empty, hover, selected.

Set background color of JavaFX ListView cells
Set background color of JavaFX ListView cells

Create javafx_testtableview/style_tableview.css file.
.table-row-cell:empty {
    -fx-background-color: khaki;
    -fx-border-color: grey
}

.table-row-cell:hover{
    -fx-background-color: blanchedalmond;
}

.table-row-cell:selected{
    -fx-background-color: chocolate;
}


Java code.
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"));
        recordList.add(new Record(2, "Eric", "Buddy", "ericbuddy@abc.yyy"));
        recordList.add(new Record(3, "Peter", "handsome", "peter@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(400);
 
        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) {
                //...
            }
 
        }
    }
}

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