javafx - 如何选择单元格内的单个字符,而不是 JavaFX TableView 中的整个单元格?
问题描述
我知道如何在 JavaFX 的 tableview 中复制整个单元格,但是有没有办法我只能在单个单元格中复制部分文本?
例如,如果我在单元格中有以下内容:
1. apples
2. oranges
3. bananas
我希望能够从单元格中复制“2. oranges”而不复制整个文本内容列表。目前,如果我单击一个单元格,它会突出显示并复制整个文本。
解决方案
我喜欢做的一件事是在右键单击上下文菜单中创建选项。
关键代码:
//Use setRowFactory to set up the ContextMenu
table.setRowFactory(new Callback<TableView<Person>, TableRow<Person>>()
{
@Override
public TableRow<Person> call(TableView<Person> tableView)
{
final TableRow<Person> row = new TableRow<>();
final ContextMenu contextMenu = new ContextMenu();
final MenuItem copyItem = new MenuItem("copy index and first name");
copyItem.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent event)
{
final Clipboard clipboard = Clipboard.getSystemClipboard();
final ClipboardContent content = new ClipboardContent();
Person tempPerson = row.getItem();
//Put the row index and first name in clipboard
content.putString(row.getIndex() + ". " + tempPerson.getFirstName());
clipboard.setContent(content);
}
});
contextMenu.getItems().add(copyItem);
// Set context menu on row, but use a binding to make it only show for non-empty rows:
row.contextMenuProperty().bind(
Bindings.when(row.emptyProperty())
.then((ContextMenu) null)
.otherwise(contextMenu)
);
return row;
}
});
完整代码 - 更改代码来自:https ://gist.github.com/james-d/7758918
主班
import java.util.Arrays;
import javafx.application.Application;
import javafx.beans.binding.Bindings;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.Label;
import javafx.scene.control.MenuItem;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableRow;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.input.Clipboard;
import javafx.scene.input.ClipboardContent;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
import javafx.util.Callback;
public class TableViewSample extends Application
{
private TableView<Person> table = new TableView<Person>();
private final ObservableList<Person> data
= FXCollections.observableArrayList(
new Person("Jacob", "Smith", "jacob.smith@example.com"),
new Person("Isabella", "Johnson", "isabella.johnson@example.com"),
new Person("Ethan", "Williams", "ethan.williams@example.com"),
new Person("Emma", "Jones", "emma.jones@example.com"),
new Person("Michael", "Brown", "michael.brown@example.com")
);
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<Person, String> firstNameCol = new TableColumn<>("First Name");
firstNameCol.setMinWidth(100);
firstNameCol.setCellValueFactory(
new PropertyValueFactory<Person, String>("firstName"));
TableColumn<Person, String> lastNameCol = new TableColumn<>("Last Name");
lastNameCol.setMinWidth(100);
lastNameCol.setCellValueFactory(
new PropertyValueFactory<Person, String>("lastName"));
TableColumn<Person, String> emailCol = new TableColumn<>("Email");
emailCol.setMinWidth(200);
emailCol.setCellValueFactory(
new PropertyValueFactory<Person, String>("email"));
table.setItems(data);
table.getColumns().addAll(Arrays.asList(firstNameCol, lastNameCol, emailCol));
table.setRowFactory(new Callback<TableView<Person>, TableRow<Person>>()
{
@Override
public TableRow<Person> call(TableView<Person> tableView)
{
final TableRow<Person> row = new TableRow<>();
final ContextMenu contextMenu = new ContextMenu();
final MenuItem copyItem = new MenuItem("copy index and first name");
copyItem.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent event)
{
final Clipboard clipboard = Clipboard.getSystemClipboard();
final ClipboardContent content = new ClipboardContent();
Person tempPerson = row.getItem();
content.putString(row.getIndex() + ". " + tempPerson.getFirstName());
clipboard.setContent(content);
}
});
contextMenu.getItems().add(copyItem);
// Set context menu on row, but use a binding to make it only show for non-empty rows:
row.contextMenuProperty().bind(
Bindings.when(row.emptyProperty())
.then((ContextMenu) null)
.otherwise(contextMenu)
);
return row;
}
});
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();
}
}
人员类
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package javafxapplication206;
import javafx.beans.property.SimpleStringProperty;
public class Person
{
private final SimpleStringProperty firstName;
private final SimpleStringProperty lastName;
private final SimpleStringProperty email;
public 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);
}
}
推荐阅读
- react-admin - 如何在自定义字段中进行自定义 api 调用?
- css - 从 css 样式表而不是内联样式参数获取样式
- c - 在用户输入的数字中找到最大的素数 - C
- php - 将单个日期范围拆分为具有给定日期的两个单独的日期范围
- ios - 块的内存问题,当它从swift转移到objective-c时
- android - 将登录信息从浏览器转移到我的应用程序
- azure - 在 Visual Studio 2017 中使用 Azure Function V1 ServiceBusTrigger 时无法从 Run 函数返回值
- c# - 我无法更改 FPSController 的位置
- azure-data-factory - Azure 数据工厂:在下一个活动的复制数据活动中使用 Rest 的输出
- reactjs - 用玩笑单元测试材料 ui 组件