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// Check a Touch object's attributes for existence and correct type
// TA: 1.1.2, 1.1.3
function check_Touch_object(t) {
assert_equals(Object.prototype.toString.call(t), "[object Touch]", "touch is of type Touch");
[
["long", "identifier"],
["EventTarget", "target"],
["long", "screenX"],
["long", "screenY"],
["long", "clientX"],
["long", "clientY"],
["long", "pageX"],
["long", "pageY"],
["long", "radiusX"],
["long", "radiusY"],
["long", "rotationAngle"],
["long", "force"],
].forEach(function(attr) {
var type = attr[0];
var name = attr[1];
// existence check
assert_true(name in t, name + " attribute in Touch object");
// type check
switch (type) {
case "long":
assert_equals(typeof t[name], "number", name + " attribute of type long");
break;
case "EventTarget":
// An event target is some type of Element
assert_true(t[name] instanceof Element, "EventTarget must be an Element.");
break;
default:
break;
}
});
}
// Check a TouchList object's attributes and methods for existence and proper type
// Also make sure all of the members of the list are Touch objects
// TA: 1.2.1, 1.2.2, 1.2.5, 1.2.6
function check_TouchList_object(tl) {
assert_equals(Object.prototype.toString.call(tl), "[object TouchList]", "touch list is of type TouchList");
[
["unsigned long", "length"],
["function", "item"],
].forEach(function(attr) {
var type = attr[0];
var name = attr[1];
// existence check
assert_true(name in tl, name + " attribute in TouchList");
// type check
switch (type) {
case "unsigned long":
assert_equals(typeof tl[name], "number", name + " attribute of type long");
break;
case "function":
assert_equals(typeof tl[name], "function", name + " attribute of type function");
break;
default:
break;
}
});
// Each member of tl should be a proper Touch object
for (var i = 0; i < tl.length; i++) {
check_Touch_object(tl.item(i));
}
// TouchList.item(x) should return null if x is >= TouchList.length
var t = tl.item(tl.length);
assert_equals(t, null, "TouchList.item returns null if the index is >= the length of the list");
}
// Check a TouchEvent event's attributes for existence and proper type
// Also check that each of the event's TouchList objects are valid
// TA: 1.{3,4,5}.1.1, 1.{3,4,5}.1.2
function check_TouchEvent(ev) {
assert_true(ev instanceof TouchEvent, ev.type + " event is a TouchEvent event");
[
["TouchList", "touches"],
["TouchList", "targetTouches"],
["TouchList", "changedTouches"],
["boolean", "altKey"],
["boolean", "metaKey"],
["boolean", "ctrlKey"],
["boolean", "shiftKey"],
].forEach(function(attr) {
var type = attr[0];
var name = attr[1];
// existence check
assert_true(name in ev, name + " attribute in " + ev.type + " event");
// type check
switch (type) {
case "boolean":
assert_equals(typeof ev[name], "boolean", name + " attribute of type boolean");
break;
case "TouchList":
assert_equals(Object.prototype.toString.call(ev[name]), "[object TouchList]", name + " attribute of type TouchList");
break;
default:
break;
}
});
}
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