43 import javafx.scene.control.Label;
44 import javafx.scene.control.TextField;
45 import javafx.scene.layout.VBox;
46 import javafx.stage.Stage;
47
48 /**
49 * A sample that demonstrates how to bind text properties so the
50 * value of the bound property is updated automatically when the value
51 * of the original property is changed.
52 *
53 * @sampleName String Binding
54 * @preview preview.png
55 * @see javafx.beans.binding.StringBinding
56 * @see javafx.scene.control.TextField
57 * @see javafx.scene.control.Label
58 * @embedded
59 */
60 public class StringBindingApp extends Application {
61
62 public Parent createContent() {
63 final SimpleDateFormat format = new SimpleDateFormat("mm/dd/yyyy");
64 final TextField dateField = new TextField();
65 dateField.setPromptText("Enter a birth date");
66 dateField.setMaxHeight(TextField.USE_PREF_SIZE);
67 dateField.setMaxWidth(TextField.USE_PREF_SIZE);
68
69 Label label = new Label();
70 label.setWrapText(true);
71 label.textProperty().bind(new StringBinding() {
72 {
73 bind(dateField.textProperty());
74 }
75
76 @Override
77 protected String computeValue() {
78 try {
79 Date date = format.parse(dateField.getText());
80 Calendar c = Calendar.getInstance();
81 c.setTime(date);
82
83 Date today = new Date();
84 Calendar c2 = Calendar.getInstance();
85 c2.setTime(today);
86
87 if (c.get(Calendar.DAY_OF_YEAR) == c2.get(Calendar.DAY_OF_YEAR) - 1
88 && c.get(Calendar.YEAR) == c2.get(Calendar.YEAR)) {
89 return "You were born yesterday";
90 } else {
91 return "You were born " + format.format(date);
92 }
93 } catch (Exception e) {
94 return "Enter a valid birth date (mm/dd/yyyy)";
95 }
96 }
97 });
98
99 VBox vBox = new VBox(7);
100 vBox.setPadding(new Insets(12));
101 vBox.getChildren().addAll(label, dateField);
102 vBox.setAlignment(Pos.CENTER);
103 return vBox;
104 }
105
106 @Override
107 public void start(Stage primaryStage) throws Exception {
108 primaryStage.setScene(new Scene(createContent()));
109 primaryStage.show();
110 }
111
112 /**
113 * Java main for when running without JavaFX launcher
114 * @param args command line arguments
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43 import javafx.scene.control.Label;
44 import javafx.scene.control.TextField;
45 import javafx.scene.layout.VBox;
46 import javafx.stage.Stage;
47
48 /**
49 * A sample that demonstrates how to bind text properties so the
50 * value of the bound property is updated automatically when the value
51 * of the original property is changed.
52 *
53 * @sampleName String Binding
54 * @preview preview.png
55 * @see javafx.beans.binding.StringBinding
56 * @see javafx.scene.control.TextField
57 * @see javafx.scene.control.Label
58 * @embedded
59 */
60 public class StringBindingApp extends Application {
61
62 public Parent createContent() {
63 final SimpleDateFormat format = new SimpleDateFormat("MM/dd/yyyy");
64 format.setLenient(false);
65 final TextField dateField = new TextField();
66 dateField.setPromptText("Enter a birth date");
67 dateField.setMaxHeight(TextField.USE_PREF_SIZE);
68 dateField.setMaxWidth(TextField.USE_PREF_SIZE);
69
70 Label label = new Label();
71 label.setWrapText(true);
72 label.textProperty().bind(new StringBinding() {
73 {
74 bind(dateField.textProperty());
75 }
76
77 @Override
78 protected String computeValue() {
79 try {
80 Date date = format.parse(dateField.getText());
81 Calendar c = Calendar.getInstance();
82 c.setTime(date);
83
84 Date today = new Date();
85 Calendar c2 = Calendar.getInstance();
86 c2.setTime(today);
87
88 if (c.get(Calendar.DAY_OF_YEAR) == c2.get(Calendar.DAY_OF_YEAR) - 1
89 && c.get(Calendar.YEAR) == c2.get(Calendar.YEAR)) {
90 return "You were born yesterday";
91 } else if (c.get(Calendar.DAY_OF_YEAR) == c2.get(Calendar.DAY_OF_YEAR)
92 && c.get(Calendar.YEAR) == c2.get(Calendar.YEAR)) {
93 return "You were born today";
94 } else {
95 return "You were born " + format.format(date);
96 }
97 } catch (Exception e) {
98 return "Enter your valid birth date (mm/dd/yyyy)";
99 }
100 }
101 });
102
103 VBox vBox = new VBox(7);
104 vBox.setPadding(new Insets(12));
105 vBox.getChildren().addAll(label, dateField);
106 vBox.setAlignment(Pos.CENTER);
107 return vBox;
108 }
109
110 @Override
111 public void start(Stage primaryStage) throws Exception {
112 primaryStage.setScene(new Scene(createContent()));
113 primaryStage.show();
114 }
115
116 /**
117 * Java main for when running without JavaFX launcher
118 * @param args command line arguments
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