1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
package com.vaadin.tests;
import com.vaadin.server.Page;
import com.vaadin.ui.Button;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.GridLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Notification;
import com.vaadin.ui.Panel;
import com.vaadin.ui.VerticalLayout;
/**
* @author marc
*
*/
public class TestComponentAddAndRecursion extends CustomComponent {
Panel p;
VerticalLayout pl;
Panel p2;
VerticalLayout p2l;
Label l;
Label l2;
Panel p3;
VerticalLayout p3l;
public TestComponentAddAndRecursion() {
VerticalLayout main = new VerticalLayout();
setCompositionRoot(main);
l = new Label("A");
l2 = new Label("B");
pl = new VerticalLayout();
pl.setMargin(true);
p = new Panel("p", pl);
pl.addComponent(l);
pl.addComponent(l2);
main.addComponent(p);
p2l = new VerticalLayout();
p2l.setMargin(true);
p2 = new Panel("p2", p2l);
p2l.addComponent(l);
main.addComponent(p2);
p3l = new VerticalLayout();
p3l.setMargin(true);
p3 = new Panel("p3", p3l);
p2l.addComponent(p3);
Button b = new Button("use gridlayout", event -> {
p.setContent(new GridLayout());
p2.setContent(new GridLayout());
p3.setContent(new GridLayout());
});
main.addComponent(b);
b = new Button("use orderedlayout", event -> {
p.setContent(new VerticalLayout());
p2.setContent(new VerticalLayout());
p3.setContent(new VerticalLayout());
});
main.addComponent(b);
b = new Button("move B", event -> p2l.addComponent(l2));
main.addComponent(b);
b = new Button("move p", event -> p3l.addComponent(p));
main.addComponent(b);
b = new Button("add to both", event -> {
Label l = new Label("both");
pl.addComponent(l);
p2l.addComponent(l);
});
main.addComponent(b);
b = new Button("recurse", event -> {
try {
p3l.addComponent(p2);
new Notification("ERROR", "This should have failed",
Notification.TYPE_ERROR_MESSAGE)
.show(Page.getCurrent());
} catch (Exception e) {
new Notification("OK", "threw, as expected",
Notification.TYPE_ERROR_MESSAGE)
.show(Page.getCurrent());
}
});
main.addComponent(b);
b = new Button("recurse2", event -> {
VerticalLayout layout = new VerticalLayout();
Panel p = new Panel("dynamic", layout);
layout.addComponent(p2);
try {
p3l.addComponent(p);
new Notification("ERROR", "This should have failed",
Notification.TYPE_ERROR_MESSAGE)
.show(Page.getCurrent());
} catch (Exception e) {
new Notification("OK", "threw, as expected",
Notification.TYPE_ERROR_MESSAGE)
.show(Page.getCurrent());
}
});
main.addComponent(b);
/*
* And that's it! The framework will display the main window and its
* contents when the application is accessed with the terminal.
*/
}
}
|
