ExtendedListBox.java revision 8b7d7e13b97842c18bbdee696cd257b75c8a27c3 
1package autotest.common.ui;
2
3import com.google.gwt.dom.client.Document;
4import com.google.gwt.dom.client.OptionElement;
5import com.google.gwt.dom.client.SelectElement;
6import com.google.gwt.user.client.ui.ListBox;
7
8public class ExtendedListBox extends ListBox implements SimplifiedList {
9    private int findItemByName(String name) {
10        for (int i = 0; i < getItemCount(); i++) {
11            if (getItemText(i).equals(name)) {
12                return i;
13            }
14        }
15        throw new IllegalArgumentException("No such name found: " + name);
16    }
17
18    private int findItemByValue(String value) {
19        for (int i = 0; i < getItemCount(); i++) {
20            if (getValue(i).equals(value)) {
21                return i;
22            }
23        }
24        throw new IllegalArgumentException("No such value found: " + value);
25    }
26
27    private native void selectAppend(SelectElement select,
28                                     OptionElement option) /*-{
29        select.appendChild(option);
30    }-*/;
31
32    public void addItem(String name) {
33        addItem(name, name);
34    }
35
36    public void addItem(String name, String value) {
37        SelectElement select = getElement().cast();
38        OptionElement option = Document.get().createOptionElement();
39        setOptionText(option, name, null);
40        option.setValue(value);
41        selectAppend(select, option);
42    }
43
44    public void removeItemByName(String name) {
45        removeItem(findItemByName(name));
46    }
47
48    private boolean isNothingSelected() {
49        return getSelectedIndex() == -1;
50    }
51
52    public String getSelectedName() {
53        if (isNothingSelected()) {
54            return null;
55        }
56        return getItemText(getSelectedIndex());
57    }
58
59    public String getSelectedValue() {
60        if (isNothingSelected()) {
61            return null;
62        }
63        return getValue(getSelectedIndex());
64    }
65
66    public void selectByName(String name) {
67        setSelectedIndex(findItemByName(name));
68    }
69
70    public void selectByValue(String value) {
71        setSelectedIndex(findItemByValue(value));
72    }
73}
74