blob: a9cdf21bd1f9dfd253bbe900ba3b5488a994537e (
plain)
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
|
/*
@ITMillApache2LicenseForJavaFiles@
*/
package com.vaadin.ui;
import java.util.Collection;
import com.vaadin.data.Container;
import com.vaadin.terminal.PaintException;
import com.vaadin.terminal.PaintTarget;
import com.vaadin.terminal.gwt.client.ui.VFilterSelect;
/**
* A filtering dropdown single-select. Suitable for newItemsAllowed, but it's
* turned of by default to avoid mistakes. Items are filtered based on user
* input, and loaded dynamically ("lazy-loading") from the server. You can turn
* on newItemsAllowed and change filtering mode (and also turn it off), but you
* can not turn on multi-select mode.
*
*/
@SuppressWarnings("serial")
@ClientWidget(VFilterSelect.class)
public class ComboBox extends Select {
private String inputPrompt = null;
public ComboBox() {
setMultiSelect(false);
setNewItemsAllowed(false);
}
public ComboBox(String caption, Collection options) {
super(caption, options);
setMultiSelect(false);
setNewItemsAllowed(false);
}
public ComboBox(String caption, Container dataSource) {
super(caption, dataSource);
setMultiSelect(false);
setNewItemsAllowed(false);
}
public ComboBox(String caption) {
super(caption);
setMultiSelect(false);
setNewItemsAllowed(false);
}
@Override
public void setMultiSelect(boolean multiSelect) {
if (multiSelect && !isMultiSelect()) {
throw new UnsupportedOperationException("Multiselect not supported");
}
super.setMultiSelect(multiSelect);
}
/**
* Gets the current input prompt.
*
* @see #setInputPrompt(String)
* @return the current input prompt, or null if not enabled
*/
public String getInputPrompt() {
return inputPrompt;
}
/**
* Sets the input prompt - a textual prompt that is displayed when the
* select would otherwise be empty, to prompt the user for input.
*
* @param inputPrompt
* the desired input prompt, or null to disable
*/
public void setInputPrompt(String inputPrompt) {
this.inputPrompt = inputPrompt;
requestRepaint();
}
@Override
public void paintContent(PaintTarget target) throws PaintException {
if (inputPrompt != null) {
target.addAttribute("prompt", inputPrompt);
}
super.paintContent(target);
}
}
|
