javafX8初探(表格)

本节,我们将学习如何在JavaFX应用中操作表格。比如:添加表格,为表格填充数据、编辑表格的行。

JavaFX中提供了一些类让我们更方便的操作表格,最重要的类有TableViewTableColumnTableCell。我们可以通过实现数据模型和使用单元工厂来填充表格。这些类都提供了列排序和改变列的宽度。

下图是一个典型的地址信息表格:

javafX8初探(表格)_第1张图片

创建一个表格

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
 
public class TableViewSample extends Application {
 
    private final TableView table = new TableView();
    public static void main(String[] args) {
        launch(args);
    }
 
    @Override
    public void start(Stage stage) {
        Scene scene = new Scene(new Group());
        stage.setTitle("Table View Sample");
        stage.setWidth(300);
        stage.setHeight(500);
 
        final Label label = new Label("Address Book");
        label.setFont(new Font("Arial", 20));
 
        table.setEditable(true);
 
        TableColumn firstNameCol = new TableColumn("First Name");
        TableColumn lastNameCol = new TableColumn("Last Name");
        TableColumn emailCol = new TableColumn("Email");
        
        table.getColumns().addAll(firstNameCol, lastNameCol, emailCol);
 
        final VBox vbox = new VBox();
        vbox.setSpacing(5);
        vbox.setPadding(new Insets(10, 0, 0, 10));
        vbox.getChildren().addAll(label, table);
 
        ((Group) scene.getRoot()).getChildren().addAll(vbox);
 
        stage.setScene(scene);
        stage.show();
    }
}


 

表格控件是通过TableView来创建的,并且被添加到一个VBox的容器中,当然你也可以直接把这个表格添加到场景中。

然后创建了3列来存数地址信息:first name last name和邮件地址。列是通过TableColumn类来创建的。

然后getColumns方法添加了之前创建的3列。在你自己的应用中,你可以通过这个方法来增加和删除列。

编译运行,如下图所示:

javafX8初探(表格)_第2张图片

你也可以通过setVisble来设置列的可见性。举个例子。如果你的例子中药隐藏邮件地址的列。你可以使用下面的方法。EmailCol.setVisble(false);

如果你的表格需要更复杂的表现,比如需要嵌套列。举个例子,如果一个人有两个邮件地址。那么我们需要两列来存储第一个和第二个邮件地址。我们创建两个子列,然后通过getColumns方法来添加这两个子列。

TableColumn firstEmailCol = new TableColumn("Primary");
TableColumn secondEmailCol = new TableColumn("Secondary");

emailCol.getColumns().addAll(firstEmailCol, secondEmailCol);


 

编译运行代码,如下图所示:

javafX8初探(表格)_第3张图片

尽管这个表格已经添加到我们的应用中了,但是其中没有内容,显示了“No content

In table.我们可以通过,setPlaceholder方法来指定没有数据时的显示内容。

定义数据模型

当你创建了一个表格后,最好能有一个类定义数据模型,然后提供方法和域来更好的为表格服务。下面我们使用一个Person类来定义地址表格中的数据。

public static class Person {
    private final SimpleStringProperty firstName;
    private final SimpleStringProperty lastName;
    private final SimpleStringProperty email;
 
    private Person(String fName, String lName, String email) {
        this.firstName = new SimpleStringProperty(fName);
        this.lastName = new SimpleStringProperty(lName);
        this.email = new SimpleStringProperty(email);
    }
 
    public String getFirstName() {
        return firstName.get();
    }
    public void setFirstName(String fName) {
        firstName.set(fName);
    }
        
    public String getLastName() {
        return lastName.get();
    }
    public void setLastName(String fName) {
        lastName.set(fName);
    }
    
    public String getEmail() {
        return email.get();
    }
    public void setEmail(String fName) {
        email.set(fName);
    }
        
}


 

其中firstNamelastNameemail 3个字符串属性代表了表格中的3个列。

而且没有属性都提供了getset方法。Get方法返回属性的值,set方法为属性赋值。

然后我们使用Person类创建一个ObservableList,定义多行数据。

final ObservableList<Person> data = FXCollections.observableArrayList(
    new Person("Jacob", "Smith", "[email protected]"),
    new Person("Isabella", "Johnson", "[email protected]"),
    new Person("Ethan", "Williams", "[email protected]"),
    new Person("Emma", "Jones", "[email protected]"),
    new Person("Michael", "Brown", "[email protected]")
);


 

下一步就是把这些数据关联到表格中。我们可以通过属性的名字来关联。

firstNameCol.setCellValueFactory(
    new PropertyValueFactory<>("firstName")
);
lastNameCol.setCellValueFactory(
    new PropertyValueFactory<>("lastName")
);
emailCol.setCellValueFactory(
    new PropertyValueFactory<>("email")
);


 

SetCellValueFactory方法指定了每一列的单元格工厂。单元格的属性是通过PropertyValueFactory类来实现的。

当数据模型定义好后并且也关联到表格中,我们就这个通过TableViewsetItems方法来添加数据了。代码如下:

import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
 
public class TableViewSample extends Application {
 
    private final TableView<Person> table = new TableView<>();
    private final ObservableList<Person> data =
        FXCollections.observableArrayList(
            new Person("Jacob", "Smith", "[email protected]"),
            new Person("Isabella", "Johnson", "[email protected]"),
            new Person("Ethan", "Williams", "[email protected]"),
            new Person("Emma", "Jones", "[email protected]"),
            new Person("Michael", "Brown", "[email protected]")
        );
   
    public static void main(String[] args) {
        launch(args);
    }
 
    @Override
    public void start(Stage stage) {
        Scene scene = new Scene(new Group());
        stage.setTitle("Table View Sample");
        stage.setWidth(450);
        stage.setHeight(500);
 
        final Label label = new Label("Address Book");
        label.setFont(new Font("Arial", 20));
 
        table.setEditable(true);
 
        TableColumn firstNameCol = new TableColumn("First Name");
        firstNameCol.setMinWidth(100);
        firstNameCol.setCellValueFactory(
                new PropertyValueFactory<>("firstName"));
 
        TableColumn lastNameCol = new TableColumn("Last Name");
        lastNameCol.setMinWidth(100);
        lastNameCol.setCellValueFactory(
                new PropertyValueFactory<>("lastName"));
 
        TableColumn emailCol = new TableColumn("Email");
        emailCol.setMinWidth(200);
        emailCol.setCellValueFactory(
                new PropertyValueFactory<>("email"));
 
        table.setItems(data);
        table.getColumns().addAll(firstNameCol, lastNameCol, emailCol);
 
        final VBox vbox = new VBox();
        vbox.setSpacing(5);
        vbox.setPadding(new Insets(10, 0, 0, 10));
        vbox.getChildren().addAll(label, table);
 
        ((Group) scene.getRoot()).getChildren().addAll(vbox);
 
        stage.setScene(scene);
        stage.show();
    }
 
    public static class Person {
 
        private final SimpleStringProperty firstName;
        private final SimpleStringProperty lastName;
        private final SimpleStringProperty email;
 
        private Person(String fName, String lName, String email) {
            this.firstName = new SimpleStringProperty(fName);
            this.lastName = new SimpleStringProperty(lName);
            this.email = new SimpleStringProperty(email);
        }
 
        public String getFirstName() {
            return firstName.get();
        }
 
        public void setFirstName(String fName) {
            firstName.set(fName);
        }
 
        public String getLastName() {
            return lastName.get();
        }
 
        public void setLastName(String fName) {
            lastName.set(fName);
        }
 
        public String getEmail() {
            return email.get();
        }
 
        public void setEmail(String fName) {
            email.set(fName);
        }
    }
} 

编译运行代码,如下图所示:

javafX8初探(表格)_第4张图片

添加新行

import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
 
public class TableViewSample extends Application {
 
    private final TableView<Person> table = new TableView<>();
    private final ObservableList<Person> data =
            FXCollections.observableArrayList(
            new Person("Jacob", "Smith", "[email protected]"),
            new Person("Isabella", "Johnson", "[email protected]"),
            new Person("Ethan", "Williams", "[email protected]"),
            new Person("Emma", "Jones", "[email protected]"),
            new Person("Michael", "Brown", "[email protected]"));
    final HBox hb = new HBox();
 
    public static void main(String[] args) {
        launch(args);
    }
 
    @Override
    public void start(Stage stage) {
        Scene scene = new Scene(new Group());
        stage.setTitle("Table View Sample");
        stage.setWidth(450);
        stage.setHeight(550);
 
        final Label label = new Label("Address Book");
        label.setFont(new Font("Arial", 20));
 
        table.setEditable(true);
 
        TableColumn firstNameCol = new TableColumn("First Name");
        firstNameCol.setMinWidth(100);
        firstNameCol.setCellValueFactory(
                new PropertyValueFactory<>("firstName"));
 
        TableColumn lastNameCol = new TableColumn("Last Name");
        lastNameCol.setMinWidth(100);
        lastNameCol.setCellValueFactory(
                new PropertyValueFactory<>("lastName"));
 
        TableColumn emailCol = new TableColumn("Email");
        emailCol.setMinWidth(200);
        emailCol.setCellValueFactory(
                new PropertyValueFactory<>("email"));
 
        table.setItems(data);
        table.getColumns().addAll(firstNameCol, lastNameCol, emailCol);
 
        final TextField addFirstName = new TextField();
        addFirstName.setPromptText("First Name");
        addFirstName.setMaxWidth(firstNameCol.getPrefWidth());
        final TextField addLastName = new TextField();
        addLastName.setMaxWidth(lastNameCol.getPrefWidth());
        addLastName.setPromptText("Last Name");
        final TextField addEmail = new TextField();
        addEmail.setMaxWidth(emailCol.getPrefWidth());
        addEmail.setPromptText("Email");
 
        final Button addButton = new Button("Add");
        addButton.setOnAction((ActionEvent e) -> {
            data.add(new Person(
                    addFirstName.getText(),
                    addLastName.getText(),
                    addEmail.getText()));
            addFirstName.clear();
            addLastName.clear();
            addEmail.clear();
        });
 
        hb.getChildren().addAll(addFirstName, addLastName, addEmail, addButton);
        hb.setSpacing(3);
 
        final VBox vbox = new VBox();
        vbox.setSpacing(5);
        vbox.setPadding(new Insets(10, 0, 0, 10));
        vbox.getChildren().addAll(label, table, hb);
 
        ((Group) scene.getRoot()).getChildren().addAll(vbox);
 
        stage.setScene(scene);
        stage.show();
    }
 
    public static class Person {
 
        private final SimpleStringProperty firstName;
        private final SimpleStringProperty lastName;
        private final SimpleStringProperty email;
 
        private Person(String fName, String lName, String email) {
            this.firstName = new SimpleStringProperty(fName);
            this.lastName = new SimpleStringProperty(lName);
            this.email = new SimpleStringProperty(email);
        }
 
        public String getFirstName() {
            return firstName.get();
        }
 
        public void setFirstName(String fName) {
            firstName.set(fName);
        }
 
        public String getLastName() {
            return lastName.get();
        }
 
        public void setLastName(String fName) {
            lastName.set(fName);
        }
 
        public String getEmail() {
            return email.get();
        }
 
        public void setEmail(String fName) {
            email.set(fName);
        }
    }
} 


运行,如下图所示:

javafX8初探(表格)_第5张图片

排序

TableView类为表格提供了排序列的能力,用户可以通过单击列头来实现排序.第一次单击按照升序排列,第二次单击按照降序排列,第三次单击不排序。默认不排序。

用户也可以按照多行排序。当单击列头的是由按住Shift键就可以。如下图所示:

javafX8初探(表格)_第6张图片

作为开发者,我们可以指定列的排序类型。可用通过setSortType方法来指定比如emailCol.setSortType(TableColumn.SortType.SESCENDING);

我们也可以通过setSortablefalse)方法来禁止排序。

编辑表格数据

import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableColumn.CellEditEvent;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.control.cell.TextFieldTableCell;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
 
public class TableViewSample extends Application {
 
    private final TableView<Person> table = new TableView<>();
    private final ObservableList<Person> data =
            FXCollections.observableArrayList(
            new Person("Jacob", "Smith", "[email protected]"),
            new Person("Isabella", "Johnson", "[email protected]"),
            new Person("Ethan", "Williams", "[email protected]"),
            new Person("Emma", "Jones", "[email protected]"),
            new Person("Michael", "Brown", "[email protected]"));
    final HBox hb = new HBox();
 
    public static void main(String[] args) {
        launch(args);
    }
 
    @Override
    public void start(Stage stage) {
        Scene scene = new Scene(new Group());
        stage.setTitle("Table View Sample");
        stage.setWidth(450);
        stage.setHeight(550);
 
        final Label label = new Label("Address Book");
        label.setFont(new Font("Arial", 20));
 
        table.setEditable(true);
 
        TableColumn<Person, String> firstNameCol = 
            new TableColumn<>("First Name");
        firstNameCol.setMinWidth(100);
        firstNameCol.setCellValueFactory(
            new PropertyValueFactory<>("firstName"));
        
        firstNameCol.setCellFactory(TextFieldTableCell.<Person>forTableColumn());
        firstNameCol.setOnEditCommit(
            (CellEditEvent<Person, String> t) -> {
                ((Person) t.getTableView().getItems().get(
                        t.getTablePosition().getRow())
                        ).setFirstName(t.getNewValue());
        });
 
 
        TableColumn<Person, String> lastNameCol = 
            new TableColumn<>("Last Name");
        lastNameCol.setMinWidth(100);
        lastNameCol.setCellValueFactory(
            new PropertyValueFactory<>("lastName"));
       lastNameCol.setCellFactory(TextFieldTableCell.<Person>forTableColumn());
       lastNameCol.setOnEditCommit(
            (CellEditEvent<Person, String> t) -> {
                ((Person) t.getTableView().getItems().get(
                        t.getTablePosition().getRow())
                        ).setLastName(t.getNewValue());
        });
 
        TableColumn<Person, String> emailCol = new TableColumn<>("Email");
        emailCol.setMinWidth(200);
        emailCol.setCellValueFactory(
            new PropertyValueFactory<>("email"));
        emailCol.setCellFactory(TextFieldTableCell.<Person>forTableColumn());       
        emailCol.setOnEditCommit(
            (CellEditEvent<Person, String> t) -> {
                ((Person) t.getTableView().getItems().get(
                        t.getTablePosition().getRow())
                        ).setEmail(t.getNewValue());
        });
 
        table.setItems(data);
        table.getColumns().addAll(firstNameCol, lastNameCol, emailCol);
 
        final TextField addFirstName = new TextField();
        addFirstName.setPromptText("First Name");
        addFirstName.setMaxWidth(firstNameCol.getPrefWidth());
        final TextField addLastName = new TextField();
        addLastName.setMaxWidth(lastNameCol.getPrefWidth());
        addLastName.setPromptText("Last Name");
        final TextField addEmail = new TextField();
        addEmail.setMaxWidth(emailCol.getPrefWidth());
        addEmail.setPromptText("Email");
 
        final Button addButton = new Button("Add");
        addButton.setOnAction((ActionEvent e) -> {
            data.add(new Person(
                    addFirstName.getText(),
                    addLastName.getText(),
                    addEmail.getText()));
            addFirstName.clear();
            addLastName.clear();
            addEmail.clear();
        });
 
        hb.getChildren().addAll(addFirstName, addLastName, addEmail, addButton);
        hb.setSpacing(3);
 
        final VBox vbox = new VBox();
        vbox.setSpacing(5);
        vbox.setPadding(new Insets(10, 0, 0, 10));
        vbox.getChildren().addAll(label, table, hb);
 
        ((Group) scene.getRoot()).getChildren().addAll(vbox);
 
        stage.setScene(scene);
        stage.show();
    }
 
    public static class Person {
 
        private final SimpleStringProperty firstName;
        private final SimpleStringProperty lastName;
        private final SimpleStringProperty email;
 
        private Person(String fName, String lName, String email) {
            this.firstName = new SimpleStringProperty(fName);
            this.lastName = new SimpleStringProperty(lName);
            this.email = new SimpleStringProperty(email);
        }
 
        public String getFirstName() {
            return firstName.get();
        }
 
        public void setFirstName(String fName) {
            firstName.set(fName);
        }
 
        public String getLastName() {
            return lastName.get();
        }
 
        public void setLastName(String fName) {
            lastName.set(fName);
        }
 
        public String getEmail() {
            return email.get();
        }
 
        public void setEmail(String fName) {
            email.set(fName);
        }
    }
}


运行,如下图所示:

javafX8初探(表格)_第7张图片

上面的例子,我们修改后需要按回车键才能生效,我们可以让当焦点改变的时候就生效:

import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TableCell;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableColumn.CellEditEvent;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
import javafx.util.Callback;
 
public class TableViewSample extends Application {
 
    private final TableView<Person> table = new TableView<>();
    private final ObservableList<Person> data =
            FXCollections.observableArrayList(
            new Person("Jacob", "Smith", "[email protected]"),
            new Person("Isabella", "Johnson", "[email protected]"),
            new Person("Ethan", "Williams", "[email protected]"),
            new Person("Emma", "Jones", "[email protected]"),
            new Person("Michael", "Brown", "[email protected]"));
    final HBox hb = new HBox();
 
    public static void main(String[] args) {
        launch(args);
    }
 
    @Override
    public void start(Stage stage) {
        Scene scene = new Scene(new Group());
        stage.setTitle("Table View Sample");
        stage.setWidth(450);
        stage.setHeight(550);
 
        final Label label = new Label("Address Book");
        label.setFont(new Font("Arial", 20));
 
        table.setEditable(true);
        
        Callback<TableColumn<Person, String>, 
            TableCell<Person, String>> cellFactory
                = (TableColumn<Person, String> p) -> new EditingCell();
 
        TableColumn<Person, String> firstNameCol = 
            new TableColumn<>("First Name");
        TableColumn<Person, String> lastNameCol = 
            new TableColumn<>("Last Name");
        TableColumn<Person, String> emailCol = 
            new TableColumn<>("Email");
 
        firstNameCol.setMinWidth(100);
        firstNameCol.setCellValueFactory(
            new PropertyValueFactory<>("firstName"));
        firstNameCol.setCellFactory(cellFactory);        
        firstNameCol.setOnEditCommit(
            (CellEditEvent<Person, String> t) -> {
                ((Person) t.getTableView().getItems().get(
                        t.getTablePosition().getRow())
                        ).setFirstName(t.getNewValue());
        });
 
 
        lastNameCol.setMinWidth(100);
        lastNameCol.setCellValueFactory(
            new PropertyValueFactory<>("lastName"));
        lastNameCol.setCellFactory(cellFactory);
        lastNameCol.setOnEditCommit(
            (CellEditEvent<Person, String> t) -> {
                ((Person) t.getTableView().getItems().get(
                        t.getTablePosition().getRow())
                        ).setLastName(t.getNewValue());
        });
 
        emailCol.setMinWidth(200);
        emailCol.setCellValueFactory(
            new PropertyValueFactory<>("email"));
        emailCol.setCellFactory(cellFactory);
        emailCol.setOnEditCommit(
            (CellEditEvent<Person, String> t) -> {
                ((Person) t.getTableView().getItems().get(
                        t.getTablePosition().getRow())
                        ).setEmail(t.getNewValue());
        });
 
        table.setItems(data);
        table.getColumns().addAll(firstNameCol, lastNameCol, emailCol);
 
        final TextField addFirstName = new TextField();
        addFirstName.setPromptText("First Name");
        addFirstName.setMaxWidth(firstNameCol.getPrefWidth());
        final TextField addLastName = new TextField();
        addLastName.setMaxWidth(lastNameCol.getPrefWidth());
        addLastName.setPromptText("Last Name");
        final TextField addEmail = new TextField();
        addEmail.setMaxWidth(emailCol.getPrefWidth());
        addEmail.setPromptText("Email");
 
        final Button addButton = new Button("Add");
        addButton.setOnAction((ActionEvent e) -> {
            data.add(new Person(
                    addFirstName.getText(),
                    addLastName.getText(),
                    addEmail.getText()));
            addFirstName.clear();
            addLastName.clear();
            addEmail.clear();
        });
 
        hb.getChildren().addAll(addFirstName, addLastName, addEmail, addButton);
        hb.setSpacing(3);
 
        final VBox vbox = new VBox();
        vbox.setSpacing(5);
        vbox.setPadding(new Insets(10, 0, 0, 10));
        vbox.getChildren().addAll(label, table, hb);
 
        ((Group) scene.getRoot()).getChildren().addAll(vbox);
 
        stage.setScene(scene);
        stage.show();
    }
 
    public static class Person {
 
        private final SimpleStringProperty firstName;
        private final SimpleStringProperty lastName;
        private final SimpleStringProperty email;
 
        private Person(String fName, String lName, String email) {
            this.firstName = new SimpleStringProperty(fName);
            this.lastName = new SimpleStringProperty(lName);
            this.email = new SimpleStringProperty(email);
        }
 
        public String getFirstName() {
            return firstName.get();
        }
 
        public void setFirstName(String fName) {
            firstName.set(fName);
        }
 
        public String getLastName() {
            return lastName.get();
        }
 
        public void setLastName(String fName) {
            lastName.set(fName);
        }
 
        public String getEmail() {
            return email.get();
        }
 
        public void setEmail(String fName) {
            email.set(fName);
        }
    }
 
    class EditingCell extends TableCell<Person, String> {
 
        private TextField textField;
 
        public EditingCell() {
        }
 
        @Override
        public void startEdit() {
            if (!isEmpty()) {
                super.startEdit();
                createTextField();
                setText(null);
                setGraphic(textField);
                textField.selectAll();
            }
        }
 
        @Override
        public void cancelEdit() {
            super.cancelEdit();
 
            setText((String) getItem());
            setGraphic(null);
        }
 
        @Override
        public 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.focusedProperty().addListener(
                (ObservableValue<? extends Boolean> arg0, 
                Boolean arg1, Boolean arg2) -> {
                    if (!arg2) {
                        commitEdit(textField.getText());
                    }
            });
        }
 
        private String getString() {
            return getItem() == null ? "" : getItem().toString();
        }
    }
}


 

为表格添加数据映射

import java.util.HashMap;
import java.util.Map;
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TableCell;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.MapValueFactory;
import javafx.scene.control.cell.TextFieldTableCell;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
import javafx.util.Callback;
import javafx.util.StringConverter;
 
public class TableViewSample extends Application {
 
    public static final String Column1MapKey = "A";
    public static final String Column2MapKey = "B";
 
    public static void main(String[] args) {
        launch(args);
    }
 
    @Override
    public void start(Stage stage) {
        Scene scene = new Scene(new Group());
        stage.setTitle("Table View Sample");
        stage.setWidth(300);
        stage.setHeight(500);
        
        final Label label = new Label("Student IDs");
        label.setFont(new Font("Arial", 20));
 
        TableColumn<Map, String> firstDataColumn = new TableColumn<>("Class A");
        TableColumn<Map, String> secondDataColumn = new TableColumn<>("Class B");
 
        firstDataColumn.setCellValueFactory(new MapValueFactory(Column1MapKey));
        firstDataColumn.setMinWidth(130);
        secondDataColumn.setCellValueFactory(new MapValueFactory(Column2MapKey));
        secondDataColumn.setMinWidth(130);
 
        TableView tableView = new TableView<>(generateDataInMap());
 
        tableView.setEditable(true);
        tableView.getSelectionModel().setCellSelectionEnabled(true);
        tableView.getColumns().setAll(firstDataColumn, secondDataColumn);
        Callback<TableColumn<Map, String>, TableCell<Map, String>>
            cellFactoryForMap = (TableColumn<Map, String> p) -> 
                new TextFieldTableCell(new StringConverter() {
                    @Override
                        public String toString(Object t) {
                        return t.toString();
                    }
                    @Override
                    public Object fromString(String string) {
                        return string;
                    }
            });
        firstDataColumn.setCellFactory(cellFactoryForMap);
        secondDataColumn.setCellFactory(cellFactoryForMap);
 
        final VBox vbox = new VBox();
 
        vbox.setSpacing(5);
        vbox.setPadding(new Insets(10, 0, 0, 10));
        vbox.getChildren().addAll(label, tableView);
 
        ((Group) scene.getRoot()).getChildren().addAll(vbox);
 
        stage.setScene(scene);
 
        stage.show();
    }
 
    private ObservableList<Map> generateDataInMap() {
        int max = 10;
        ObservableList<Map> allData = FXCollections.observableArrayList();
        for (int i = 1; i < max; i++) {
            Map<String, String> dataRow = new HashMap<>();
 
            String value1 = "A" + i;
            String value2 = "B" + i;
 
            dataRow.put(Column1MapKey, value1);
            dataRow.put(Column2MapKey, value2);
 
            allData.add(dataRow);
        }
        return allData;
    }
}


 

如下图所示:

javafX8初探(表格)_第8张图片

 


 

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