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dedde9c 2009-10-07 Daniel Bates <dbates@webkit.org>
Daniel Bates authored Oct 7, 2009
1 <html>
2 <head>
3 <style>
4 #dropTarget, #dragMe { text-align: center; display: table-cell; vertical-align: middle }
5 #dropTarget {width: 256px; height: 256px; border: 1px dashed}
6 #dragMe {-webkit-user-drag: element; -webkit-user-select: none; background: #ff0000; width: 64px; height: 64px; color: white}
7 .pass { font-weight: bold; color: green; }
8 .fail { font-weight: bold; color: red; }
9 </style>
10 <script>
11 var dragMe;
12 var dropTarget;
13 var messageElm;
14 var defaultMessageElm;
15 var event;
16
17 var ALLOWED_EFFECTS = 'move';
18 var DROP_EFFECT = 'copy';
19
20 window.onload = function()
21 {
22 dragMe = document.getElementById("dragMe");
23 dropTarget = document.getElementById("dropTarget");
24 messageElm = document.getElementById("message");
25 defaultMessageElm = document.getElementById("default-message");
26
27 if (!dragMe || !dropTarget || !messageElm || !defaultMessageElm)
28 return;
29
30 dragMe.ondragstart = dragStart;
31 dragMe.ondragend = dragEnd;
32
33 dropTarget.ondragenter = dragEntered;
34 dropTarget.ondragover = dragOver;
35 dropTarget.ondrop = drop;
36 }
37
38 function dragStart(e)
39 {
40 event = e;
41 e.dataTransfer.effectAllowed = ALLOWED_EFFECTS;
42 e.dataTransfer.setData('Text', e.target.textContent);
43 }
44
45 function dragEnd(e)
46 {
47 messageElm.style.visibility = "hidden";
48 defaultMessageElm.style.visibility = "visible";
49 return;
50 }
51
52 function dragEntered(e)
53 {
54 messageElm.style.visibility = "visible";
55 defaultMessageElm.style.visibility = "hidden";
56 dragEnteredAndUpdated(e);
57 }
58
59 function dragOver(e)
60 {
61 dragEnteredAndUpdated(e);
62 }
63
64 function dragEnteredAndUpdated(e)
65 {
66 event = e;
67 e.dataTransfer.dropEffect = DROP_EFFECT;
68 cancelDrag(e);
69 }
70
71 function drop(e)
72 {
73 cancelDrag(e);
74 }
75
76 function cancelDrag(e)
77 {
78 if (e.preventDefault)
79 e.preventDefault();
80 else {
81 // Assume this script is executing within Internet Explorer
82 e.returnValue = false;
83 }
84 }
85 </script>
86 </head>
87 <body>
88 <p id="description">This test can be used to verify that the not-allowed cursor is shown during an invalid drag-and-drop operation.
89 In particular, if the effectAllowed is <code><script>document.write(ALLOWED_EFFECTS)</script></code> and the dropEffect of the
90 drop target is <code><script>document.write(DROP_EFFECT)</script></code> then the drop is not allowed and the cursor should
91 change to the not-allowed cursor. Note, this test only pertains to the Windows build since the Mac build does not show a drop cursor
92 for a not-allowed drop operation (see bug #25925).
93 <br/><br/>
94 Drag the red square over the drop target (demarcated by the dashed boundary). While hovering over the drop target, if the cursor
95 is <img alt="not-allowed" src="data:image/gif;base64,R0lGODlhEgASAIAAAAAAAP///yH5BAAAAAAALAAAAAASABIAAAIvjA+px6ifmnmM1ijDmlbuuHmAhoWXaTqYKq7sObZw3HwgXd8cPr8yDGxBXEJioAAAOw=="> then the test <span class="pass">PASSED</span>. Otherwise, the test <span class="fail">FAILED</span>.</p>
96 <div id="test-container">
97 <label for="effectAllowed">effectAllowed:</label> <code><script>document.write(ALLOWED_EFFECTS)</script></code>
98 <br/><br/>
99 <div id="dropTarget">
100 <div id="default-message">Drag the red square over me.<br/><br/>
101 <label for="dropEffect">Expects dropEffect:</label> <code><script>document.write(DROP_EFFECT)</script></code>
102 </div>
103 <div id="message" style="visibility:hidden">The cursor should be <img alt="not-allowed" src="data:image/gif;base64,R0lGODlhEgASAIAAAAAAAP///yH5BAAAAAAALAAAAAASABIAAAIvjA+px6ifmnmM1ijDmlbuuHmAhoWXaTqYKq7sObZw3HwgXd8cPr8yDGxBXEJioAAAOw==">. Is it?</div>
104 </div>
105 <hr/>
106 <p>Items that can be dragged to the drop target:</p>
107 <div id="dragMe" draggable="true">Square</div>
108 <hr/>
109 </div>
110 </body>
111 </html>
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