TableView JAVAFX 2.1中的上下文菜单 [英] Context Menu in TableView JAVAFX 2.1
问题描述
我想在tableview中添加一个上下文菜单，更具体地说，我想在右键单击表格行上显示上下文菜单。
I want to add a context menu to the tableview, more specifically I want to display context menu on table rows on a right click.
我尝试使用此代码
final EventHandler click = new EventHandler() {
public void handle(MouseEvent t) {
}
@Override
public void handle(Event arg0) {
}
};
final Context menu = new ContextMenu();
MenuItem item = new MenuItem("Add Image");
item.setOnAction(new EventHandler() {
public void handle(ActionEvent t)
{
}
@Override
public void handle(Event arg0)
{
//some code here
}});
menu.getItems().addAll(item);
EditingCell cellFactory = new EditingCell(click,menu);
TableColumn col = new TableColumn("column1");
col.setCellFactory(cellFactory);
上面的代码在JAVAFX 2.0中正常工作，我点击右键获取上下文菜单，如何当我用JAVAFX 2.1运行我的代码时，上下文菜单无效。
Above code is working correctly in JAVAFX 2.0, and I am getting a context menu on right click, How ever when I run my code with JAVAFX 2.1 Context menu doesnt work.
我试图使用showsProperty（）方法获取上下文菜单显示属性，并在JAVAFX 2.1中返回false并且在JAVAFX 2.0中是真的
I tried to get context menu's showing property using showingProperty() method and it is returning false in JAVAFX 2.1 and true in JAVAFX 2.0
此外我还尝试制作我的自定义cellfactory类，这是我的代码（我从官方JAVAFX TreeView上下文菜单示例中获取）
Further I also tried making my custom cellfactory class and here is my code (I took it from official JAVAFX TreeView context menu example)
import javafx.event.Event;
import javafx.event.EventHandler;
import javafx.scene.control.*;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
class TextFieldTreeCellImpl extends TableCell<String,String> {
private TextField textField;
private ContextMenu addMenu = new ContextMenu();
public TextFieldTreeCellImpl() {
MenuItem addMenuItem = new MenuItem("Add Employee");
addMenu.getItems().add(addMenuItem);
addMenuItem.setOnAction(new EventHandler() {
public void handle(Event t) {
}
});
setContextMenu(addMenu);
}
@Override
public void startEdit() {
super.startEdit();
if (textField == null) {
createTextField();
}
setText(null);
setGraphic(textField);
textField.selectAll();
}
@Override
public void cancelEdit() {
super.cancelEdit();
setText((String) getItem());
//setGraphic(getTableCell().getGraphic());
}
@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(getTreeItem().getGraphic());
}
}
}
private void createTextField() {
textField = new TextField(getString());
textField.setOnKeyReleased(new EventHandler<KeyEvent>() {
@Override
public void handle(KeyEvent t) {
if (t.getCode() == KeyCode.ENTER) {
commitEdit(textField.getText());
} else if (t.getCode() == KeyCode.ESCAPE) {
cancelEdit();
}
}
});
}
private String getString() {
return getItem() == null ? "" : getItem().toString();
}
}
我将此自定义cellfactory添加为：
and I added this custom cellfactory as:
final Callback<TableColumn, TableCell> cellFactory =
new Callback<TableColumn, TableCell>() {
public TableCell call(TableColumn p) {
return new TextFieldTreeCellImpl();
}
};
col.setCellFactory(cellFactory);
JAVAFX 2.0中的工作正常但JAVAFX 2.1中没有工作
Still it is working fine in JAVAFX 2.0 but not in JAVAFX 2.1
请帮助我，我很难...
Please help me, I am having a hard time ...
推荐答案
两个官方 TreeView 和 TableView 教程适用于JavaFX 2.1。问题是，您正在混合这些代码示例。当 TableColumn 的单元格工厂需要 TableCell TreeCell $ C>。只需单独使用TableView教程并将EditingCell替换为具有contextMenu的以下内容：
Both official TreeView and TableView tutorials are working fine with JavaFX 2.1. The problem is, you are mixing these code examples. You cannot return the TreeCell when the cell factory of the TableColumn needs TableCell. Simply follow the TableView tutorial alone only and replace the EditingCell with the following one that has contextMenu:
import javafx.event.Event;
import javafx.event.EventHandler;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.MenuItem;
import javafx.scene.control.TableCell;
import javafx.scene.control.TextField;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
class EditingCell extends TableCell<Person, String> {
private TextField textField;
private ContextMenu addMenu = new ContextMenu();
public EditingCell() {
MenuItem addMenuItem = new MenuItem("Print Me");
addMenu.getItems().add(addMenuItem);
addMenuItem.setOnAction(new EventHandler() {
public void handle(Event t) {
// Do something with current row
Person curr = getTableView().getItems().get(getIndex());
System.out.println(curr.getFirstName() + " " + curr.getLastName());
}
});
}
@Override
public void startEdit() {
super.startEdit();
if (textField == null) {
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);
setContextMenu(addMenu);
}
}
}
private void createTextField() {
textField = new TextField(getString());
textField.setMinWidth(this.getWidth() - this.getGraphicTextGap() * 2);
textField.setOnKeyReleased(new EventHandler<KeyEvent>() {
@Override
public void handle(KeyEvent t) {
if (t.getCode() == KeyCode.ENTER) {
commitEdit(textField.getText());
} else if (t.getCode() == KeyCode.ESCAPE) {
cancelEdit();
}
}
});
}
private String getString() {
return getItem() == null ? "" : getItem().toString();
}
}
这篇关于TableView JAVAFX 2.1中的上下文菜单的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
