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
106
107
108
109
110
111
112
113
114
115
|
/*
@ITMillApache2LicenseForJavaFiles@
*/
package com.vaadin.terminal.gwt.client;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.SpanElement;
import com.google.gwt.dom.client.Style;
import com.google.gwt.dom.client.Style.BorderStyle;
import com.google.gwt.dom.client.Style.Cursor;
import com.google.gwt.dom.client.Style.Display;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.ui.ComplexPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;
public class SimpleTree extends ComplexPanel {
private Element children = Document.get().createDivElement().cast();
private SpanElement handle = Document.get().createSpanElement();
private SpanElement text = Document.get().createSpanElement();
public SimpleTree() {
setElement(Document.get().createDivElement());
Style style = getElement().getStyle();
style.setProperty("whiteSpace", "nowrap");
style.setPadding(3, Unit.PX);
style = handle.getStyle();
style.setDisplay(Display.NONE);
style.setProperty("textAlign", "center");
style.setWidth(10, Unit.PX);
style.setCursor(Cursor.POINTER);
style.setBorderStyle(BorderStyle.SOLID);
style.setBorderColor("#666");
style.setBorderWidth(1, Unit.PX);
style.setMarginRight(3, Unit.PX);
style.setProperty("borderRadius", "4px");
handle.setInnerHTML("+");
getElement().appendChild(handle);
getElement().appendChild(text);
style = children.getStyle();
style.setPaddingLeft(20, Unit.PX);
style.setDisplay(Display.NONE);
getElement().appendChild(children);
addDomHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
if (event.getNativeEvent().getEventTarget().cast() == handle) {
if (children.getStyle().getDisplay().intern() == Display.NONE
.getCssName()) {
open(event.getNativeEvent().getShiftKey());
} else {
close();
}
} else if (event.getNativeEvent().getEventTarget().cast() == text) {
select(event);
}
}
}, ClickEvent.getType());
}
protected void select(ClickEvent event) {
}
public void close() {
children.getStyle().setDisplay(Display.NONE);
handle.setInnerHTML("+");
}
public void open(boolean recursive) {
handle.setInnerHTML("-");
children.getStyle().setDisplay(Display.BLOCK);
if (recursive) {
for (Widget w : getChildren()) {
if (w instanceof SimpleTree) {
SimpleTree str = (SimpleTree) w;
str.open(true);
}
}
}
}
public SimpleTree(String caption) {
this();
setText(caption);
}
public void setText(String text) {
this.text.setInnerText(text);
}
public void addItem(String text) {
Label label = new Label(text);
add(label, children);
}
@Override
public void add(Widget child) {
add(child, children);
}
@Override
protected void add(Widget child, Element container) {
super.add(child, container);
handle.getStyle().setDisplay(Display.INLINE_BLOCK);
}
}
|
