Added web-exposed constructor for Touch and TouchEvent

third_party/WebKit/LayoutTests/fast/events/constructors/touch-support.js

+//  TODO(chongz): Remove this file and import from w3c tests after approved.

[dtapuska, 2015/11/04 21:36:31]

ditto

+//  https://github.com/w3c/touch-events/issues/45
+
+// Check a Touch object's atttributes for existence and correct type
+// TA: 1.1.2, 1.1.3
+function check_Touch_object(t) {
+    test(function() {
+        assert_equals(Object.prototype.toString.call(t), "[object Touch]", "touch is of type Touch");
+    }, "touch point is a Touch object");
+    [
+        ["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
+        test(function() {
+            assert_true(name in t, name + " attribute in Touch object");
+        }, "Touch." + name + " attribute exists");
+
+        // type check
+        switch (type) {
+            case "long":
+                test(function() {
+                    assert_equals(typeof t[name], "number", name + " attribute of type long");
+                }, "Touch." + name + " attribute is of type number (long)");
+                break;
+            case "EventTarget":
+                // An event target is some type of Element
+                test(function() {
+                    assert_true(t[name] instanceof Element, "EventTarget must be an Element.");
+                }, "Touch." + name + " attribute is of type 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) {
+    test(function() {
+        assert_equals(Object.prototype.toString.call(tl), "[object TouchList]", "touch list is of type TouchList");
+    }, "touch list is a TouchList object");
+    [
+        ["unsigned long", "length"],
+        ["function", "item"],
+    ].forEach(function(attr) {
+        var type = attr[0];
+        var name = attr[1];
+
+        // existence check
+        test(function() {
+            assert_true(name in tl, name + " attribute in TouchList");
+        }, "TouchList." + name + " attribute exists");
+
+        // type check
+        switch (type) {
+            case "unsigned long":
+                test(function() {
+                    assert_equals(typeof tl[name], "number", name + " attribute of type long");
+                }, "TouchList." + name + " attribute is of type number (unsigned long)");
+                break;
+            case "function":
+                test(function() {
+                    assert_equals(typeof tl[name], "function", name + " attribute of type function");
+                }, "TouchList." + name + " attribute is 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
+    test(function() {
+        var t = tl.item(tl.length);
+        assert_equals(t, null, "TouchList.item(TouchList.length) must return 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) {
+    test(function() {
+        assert_true(ev instanceof TouchEvent, "event is a TouchEvent event");
+    }, 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
+        test(function() {
+            assert_true(name in ev, name + " attribute in " + ev.type + " event");
+        }, ev.type + "." + name + " attribute exists");
+        // type check
+        switch (type) {
+            case "boolean":
+                test(function() {
+                    assert_equals(typeof ev[name], "boolean", name + " attribute of type boolean");
+                }, ev.type + "." + name + " attribute is of type boolean");
+                break;
+            case "TouchList":
+                test(function() {
+                    assert_equals(Object.prototype.toString.call(ev[name]), "[object TouchList]", name + " attribute of type TouchList");
+                }, ev.type + "." + name + " attribute is of type TouchList");
+                break;
+            default:
+                break;
+        }
+    });
+}