1 files changed, 192 insertions, 0 deletions
diff --git a/dom/events/Touch.cpp b/dom/events/Touch.cpp
new file mode 100644
index 000000000..a538fa695
--- /dev/null
+++ b/dom/events/Touch.cpp
@@ -0,0 +1,192 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/Touch.h"
+
+#include "mozilla/dom/EventTarget.h"
+#include "mozilla/dom/TouchEvent.h"
+#include "nsGlobalWindow.h"
+#include "nsContentUtils.h"
+#include "nsIContent.h"
+
+namespace mozilla {
+namespace dom {
+
+// static
+already_AddRefed<Touch>
+Touch::Constructor(const GlobalObject& aGlobal,
+                   const TouchInit& aParam,
+                   ErrorResult& aRv)
+{
+  // Annoyingly many parameters, make sure the ordering is the same as in the
+  // Touch constructor.
+  RefPtr<Touch> touch = new Touch(aParam.mTarget,
+                                  aParam.mIdentifier,
+                                  aParam.mPageX,
+                                  aParam.mPageY,
+                                  aParam.mScreenX,
+                                  aParam.mScreenY,
+                                  aParam.mClientX,
+                                  aParam.mClientY,
+                                  aParam.mRadiusX,
+                                  aParam.mRadiusY,
+                                  aParam.mRotationAngle,
+                                  aParam.mForce);
+  return touch.forget();
+}
+
+Touch::Touch(EventTarget* aTarget,
+             int32_t aIdentifier,
+             int32_t aPageX,
+             int32_t aPageY,
+             int32_t aScreenX,
+             int32_t aScreenY,
+             int32_t aClientX,
+             int32_t aClientY,
+             int32_t aRadiusX,
+             int32_t aRadiusY,
+             float aRotationAngle,
+             float aForce)
+{
+  mTarget = aTarget;
+  mIdentifier = aIdentifier;
+  mPagePoint = CSSIntPoint(aPageX, aPageY);
+  mScreenPoint = CSSIntPoint(aScreenX, aScreenY);
+  mClientPoint = CSSIntPoint(aClientX, aClientY);
+  mRefPoint = LayoutDeviceIntPoint(0, 0);
+  mPointsInitialized = true;
+  mRadius.x = aRadiusX;
+  mRadius.y = aRadiusY;
+  mRotationAngle = aRotationAngle;
+  mForce = aForce;
+
+  mChanged = false;
+  mMessage = 0;
+  nsJSContext::LikelyShortLivingObjectCreated();
+}
+
+Touch::Touch(int32_t aIdentifier,
+             LayoutDeviceIntPoint aPoint,
+             LayoutDeviceIntPoint aRadius,
+             float aRotationAngle,
+             float aForce)
+{
+  mIdentifier = aIdentifier;
+  mPagePoint = CSSIntPoint(0, 0);
+  mScreenPoint = CSSIntPoint(0, 0);
+  mClientPoint = CSSIntPoint(0, 0);
+  mRefPoint = aPoint;
+  mPointsInitialized = false;
+  mRadius = aRadius;
+  mRotationAngle = aRotationAngle;
+  mForce = aForce;
+
+  mChanged = false;
+  mMessage = 0;
+  nsJSContext::LikelyShortLivingObjectCreated();
+}
+
+Touch::Touch(const Touch& aOther)
+  : mTarget(aOther.mTarget)
+  , mRefPoint(aOther.mRefPoint)
+  , mChanged(aOther.mChanged)
+  , mMessage(aOther.mMessage)
+  , mIdentifier(aOther.mIdentifier)
+  , mPagePoint(aOther.mPagePoint)
+  , mClientPoint(aOther.mClientPoint)
+  , mScreenPoint(aOther.mScreenPoint)
+  , mRadius(aOther.mRadius)
+  , mRotationAngle(aOther.mRotationAngle)
+  , mForce(aOther.mForce)
+  , mPointsInitialized(aOther.mPointsInitialized)
+{
+  nsJSContext::LikelyShortLivingObjectCreated();
+}
+
+Touch::~Touch()
+{
+}
+
+// static
+bool
+Touch::PrefEnabled(JSContext* aCx, JSObject* aGlobal)
+{
+  return TouchEvent::PrefEnabled(aCx, aGlobal);
+}
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Touch, mTarget)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Touch)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(Touch)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(Touch)
+
+EventTarget*
+Touch::GetTarget() const
+{
+  nsCOMPtr<nsIContent> content = do_QueryInterface(mTarget);
+  if (content && content->ChromeOnlyAccess() &&
+      !nsContentUtils::LegacyIsCallerNativeCode() &&
+      !nsContentUtils::CanAccessNativeAnon()) {
+    return content->FindFirstNonChromeOnlyAccessContent();
+  }
+
+  return mTarget;
+}
+
+void
+Touch::InitializePoints(nsPresContext* aPresContext, WidgetEvent* aEvent)
+{
+  if (mPointsInitialized) {
+    return;
+  }
+  mClientPoint = Event::GetClientCoords(
+    aPresContext, aEvent, mRefPoint, mClientPoint);
+  mPagePoint = Event::GetPageCoords(
+    aPresContext, aEvent, mRefPoint, mClientPoint);
+  mScreenPoint = Event::GetScreenCoords(aPresContext, aEvent, mRefPoint);
+  mPointsInitialized = true;
+}
+
+void
+Touch::SetTarget(EventTarget* aTarget)
+{
+  mTarget = aTarget;
+}
+
+bool
+Touch::Equals(Touch* aTouch)
+{
+  return mRefPoint == aTouch->mRefPoint &&
+         mForce == aTouch->Force() &&
+         mRotationAngle == aTouch->RotationAngle() &&
+         mRadius.x == aTouch->RadiusX() &&
+         mRadius.y == aTouch->RadiusY();
+}
+
+JSObject*
+Touch::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return TouchBinding::Wrap(aCx, this, aGivenProto);
+}
+
+// Parent ourselves to the global of the target. This achieves the desirable
+// effects of parenting to the target, but avoids making the touch inaccessible
+// when the target happens to be NAC and therefore reflected into the XBL scope.
+nsIGlobalObject*
+Touch::GetParentObject()
+{
+  if (!mTarget) {
+    return nullptr;
+  }
+  return mTarget->GetOwnerGlobal();
+}
+
+} // namespace dom
+} // namespace mozilla