<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8'>
<title>HTML Test: drag DataTransfer protected status</title>
<link rel='author' title='Nika Layzell' href='mailto:[email protected]'>
<link rel='help' href='https://html.spec.whatwg.org/multipage/#the-datatransfer-interface'>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
#drag {
width: 100px;
height: 100px;
display: inline-block;
color: #fff;
background-color: #f00;
}
#drop {
width: 100px;
height: 100px;
display: inline-block;
color: #fff;
background-color: #00f;
}
</style>
</head>
<body>
<h3>Instructions</h3>
<p>
Drag the box labeled "drag" to the box labeled "drop" and release.
</p>
<div id="drag" draggable="true">drag</div>
<div id="drop">drop</div>
<div id="log"> </div>
<script>
var MIME = "text/plain";
var drop;
setup(function() {
drop = document.querySelector("#drop");
}, {explicit_done: true, explicit_timeout: true});
var STATUS_PROTECTED = "protected";
var STATUS_READONLY = "readonly";
var STATUS_READWRITE = "readwrite";
var STATUS_DISCONNECTED = "disconnected";
function status(dt) {
// Check if we can write to it.
try {
dt.setData("text/html", "_test");
if (dt.getData("text/html") == "_test") {
dt.clearData("text/html");
assert_true(!dt.getData("text/html"), "ClearData should work...");
return STATUS_READWRITE;
}
} catch(e) {}
// If we can read the data then we're readonly
if (dt.getData(MIME)) {
return STATUS_READONLY;
}
// If we can see that items exist (and read types) then we're protected
if (dt.items.length > 0) {
return STATUS_PROTECTED;
}
// Otherwise we've been disconnected.
return STATUS_DISCONNECTED;
};
var drag_dt = null;
var over_dt = null;
var drop_dt = null;
on_event(document.body, "dragstart", function(e) {
drag_dt = e.dataTransfer;
over_dt = null;
drop_dt = null;
drag_dt.setData(MIME, "b");
test(function() {
assert_equals(status(drag_dt), STATUS_READWRITE,
"drag_dt must be readwrite during dragstart");
}, "dragstart event status");
});
on_event(drop, "dragover", function(e) {
if (!over_dt) {
over_dt = e.dataTransfer;
test(function() {
assert_equals(status(drag_dt), STATUS_DISCONNECTED,
"drag_dt mustbe disconnected during dragover");
assert_equals(status(over_dt), STATUS_PROTECTED,
"over_dt mustbe protected during dragover");
}, "dragover event status");
test(function() {
assert_not_equals(drag_dt, over_dt,
"drag_dt must be a different DataTransfer object than over_dt");
}, "dragover event identity");
}
e.preventDefault();
});
on_event(drop, "drop", function(e) {
drop_dt = e.dataTransfer;
test(function() {
assert_equals(status(drag_dt), STATUS_DISCONNECTED,
"drag_dt mustbe disconnected during drop");
assert_equals(status(over_dt), STATUS_DISCONNECTED,
"over_dt mustbe disconnected during drop");
assert_equals(status(drop_dt), STATUS_READONLY,
"drop_dt mustbe readonly during drop");
}, "drop event status");
test(function() {
assert_not_equals(drop_dt, over_dt,
"drop_dt must be a different DataTransfer object than over_dt");
assert_not_equals(drop_dt, drag_dt,
"drop_dt must be a different DataTransfer object than drag_dt");
}, "drop event identity");
test(function() {
assert_equals(drop_dt.getData(MIME), "b",
"the data should have been persisted");
}, "drop event data");
e.preventDefault();
setTimeout(function() {
test(function() {
assert_equals(status(drag_dt), STATUS_DISCONNECTED,
"drag_dt mustbe disconnected after drop");
assert_equals(status(over_dt), STATUS_DISCONNECTED,
"over_dt mustbe disconnected after drop");
assert_equals(status(drop_dt), STATUS_DISCONNECTED,
"drop_dt mustbe disconnected after drop");
}, "after drop event status");
done();
}, 0);
});
</script>
</body>
</html>
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