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/**
* File for the TextFieldWithContextMenu.
*/
package de.fhswf.in.inf.java2.aufgabe04;
import java.util.HashMap;
import java.util.Map;
import java.util.Stack;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.MenuItem;
import javafx.scene.control.TextField;
import javafx.scene.input.Clipboard;
import javafx.scene.input.DataFormat;
/**
* A TextField with a ContextMenu.
*
* @author $Author: $
* @version $Revision: $, $Date: $ UTC
*/
public class TextFieldWithContextMenu extends TextField
{
Stack<String> undoStack = new Stack<>();
private MenuItem undo = new MenuItem("Rückgängig");
private MenuItem cut = new MenuItem("Ausschneiden");
private MenuItem copy = new MenuItem("Kopieren");
private MenuItem paste = new MenuItem("Einfügen");
private MenuItem delete = new MenuItem("Löschen");
private MenuItem selectAll = new MenuItem("Alles Markieren");
private ContextMenu contextMenu;
/**
* Build the ContextMenu for the TextField.
*
*/
public TextFieldWithContextMenu()
{
//So empty is a valid pop and we never pop an empty stack
undoStack.push("");
undo.setOnAction(e -> {
//The first time properties are strange.
//The multiple pops are needed as the TextChangeListener
//adds the actual text before and after the setText
undoStack.pop();
setText(undoStack.pop());
undoStack.pop();
});
cut.setOnAction(e -> {
Map<DataFormat, Object> content = new HashMap<>();
content.put(DataFormat.PLAIN_TEXT, getSelectedText());
Clipboard.getSystemClipboard().setContent(content);
deleteText(getSelection());
});
copy.setOnAction(e -> {
Map<DataFormat, Object> content = new HashMap<>();
content.put(DataFormat.PLAIN_TEXT, getSelectedText());
Clipboard.getSystemClipboard().setContent(content);
});
paste.setOnAction(e -> {
replaceSelection(Clipboard.getSystemClipboard().getString());
});
delete.setOnAction(e -> {
replaceSelection("");
});
selectAll.setOnAction(e -> {
selectRange(0, getText().length());
});
contextMenu = new ContextMenu(undo, cut, copy, paste, delete,
selectAll);
setContextMenu(contextMenu);
contextMenu.setOnShowing(e -> {
getContextMenu().getItems().forEach(f -> {
f.setDisable(true);
});
if (undoStack.size() > 1)
{
undo.setDisable(false);
}
if (getSelection().getLength() > 0)
{
copy.setDisable(false);
cut.setDisable(false);
delete.setDisable(false);
}
if (Clipboard.getSystemClipboard().getString() != null)
{
paste.setDisable(false);
}
if (getLength() > 0 && getSelection().getLength() < getLength())
{
selectAll.setDisable(false);
}
});
textProperty().addListener(e -> {
undoStack.push(getText());
});
}
}
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