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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
<!DOCTYPE html>
<html>
<!--
Copyright 2010 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<head>
<title>goog.fx.DragScrollSupport</title>
<meta charset="utf-8">
<script src="../base.js"></script>
<script>
goog.require('goog.fx.DragDrop');
goog.require('goog.fx.DragDropGroup');
goog.require('goog.fx.DragScrollSupport');
goog.require('goog.dom');
</script>
<link rel="stylesheet" href="css/demo.css">
<style>
body {
margin: 10px;
}
ul {
padding: 0px;
}
li {
list-style: none;
}
li, div {
font: menu;
width: 20ex;
border: 1px solid gray;
margin: 1px;
padding: 0px 2px 0px 2px;
background: silver;
}
.source {
cursor: move;
-moz-user-select: none;
}
.drag {
cursor: move;
background: green;
}
.target {
}
#list2 {
margin: 0px 30px 30px 30px;
padding-left: 30px;
}
.foo {
position: absolute;
background: pink;
padding: 5px;
}
</style>
</head>
<body>
<h1>goog.fx.DragScrollSupport</h1>
List 1 in a scrollable area.
<div id="list1-container" style="overflow:scroll; width: 100px; height: 300px;">
<ul id="list1">
<li>Item 1.1 ----------</li>
<li>Item 1.2 ----------</li>
<li>Item 1.3 ----------</li>
<li>Item 1.4 ----------</li>
<li>Item 1.5 ----------</li>
<li>Item 1.6 ----------</li>
<li>Item 1.7 ----------</li>
<li>Item 1.8 ----------</li>
<li>Item 1.9 ----------</li>
<li>Item 1.10 ----------</li>
<li>Item 1.11 ----------</li>
<li>Item 1.12 ----------</li>
<li>Item 1.13 ----------</li>
<li>Item 1.14 ----------</li>
<li>Item 1.15 ----------</li>
</ul>
</div>
<script>
var scrollSupport = null;
var list1 = new goog.fx.DragDropGroup();
var nodes = document.getElementById('list1').childNodes;
var len = nodes.length;
for (var i = 0; i < len; i++) {
var el = nodes[i];
if ((el.nodeType == 1) && (el.nodeName == 'LI')) {
list1.addItem(el, el.firstChild.nodeValue);
}
}
list1.addScrollableContainer(goog.dom.getElement('list1-container'));
list1.addTarget(list1);
// Set additional classes used to indicate dragging
list1.setSourceClass('source');
list1.setTargetClass('target');
// Init drag objects
list1.init();
// Set up event handlers
goog.events.listen(list1, 'dragover', dragOver);
goog.events.listen(list1, 'dragout', dragOut);
goog.events.listen(list1, 'dragstart', dragStart);
goog.events.listen(list1, 'dragend', dragEnd);
function dragOver(event) {
event.dropTargetItem.element.style.background = 'red';
}
function dragOut(event) {
event.dropTargetItem.element.style.background = 'silver';
}
function dragStart(event) {
goog.style.setOpacity(event.dragSourceItem.element, 0.5);
scrollSupport = new goog.fx.DragScrollSupport(
goog.dom.getElement('list1-container'));
}
function dragEnd(event) {
goog.style.setOpacity(event.dragSourceItem.element, 1.0);
goog.dispose(scrollSupport);
}
</script>
</body>
</html>
|
