Bug 949435, part 3 - Implement an SVGIFrameELement class. r=bz,jwatt …

…for the webidl, r=longsonr for the rest

content/svg/content/src/SVGIFrameElement.cpp

@@ -0,0 +1,344 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "SVGIFrameElement.h"
+
+#include "GeckoProfiler.h"
+#include "mozilla/ArrayUtils.h"
+#include "nsCOMPtr.h"
+#include "nsGkAtoms.h"
+#include "mozilla/dom/SVGDocumentBinding.h"
+#include "mozilla/dom/SVGIFrameElementBinding.h"
+#include "mozilla/dom/SVGMatrix.h"
+#include "mozilla/dom/SVGSVGElement.h"
+#include "mozilla/Preferences.h"
+#include "nsStyleConsts.h"
+
+NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT_CHECK_PARSER(IFrame)
+
+namespace mozilla {
+namespace dom {
+
+JSObject*
+SVGIFrameElement::WrapNode(JSContext *aCx)
+{
+  return SVGIFrameElementBinding::Wrap(aCx, this);
+}
+
+//--------------------- IFrame ------------------------
+
+nsSVGElement::LengthInfo SVGIFrameElement::sLengthInfo[4] =
+{
+  { &nsGkAtoms::x, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::X },
+  { &nsGkAtoms::y, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::Y },
+  { &nsGkAtoms::width, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::X },
+  { &nsGkAtoms::height, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::Y }
+};
+
+//----------------------------------------------------------------------
+// nsISupports methods
+NS_IMPL_ISUPPORTS_INHERITED(SVGIFrameElement, SVGIFrameElementBase,
+                            nsIFrameLoaderOwner,
+                            nsIDOMNode, nsIDOMElement,
+                            nsIDOMSVGElement)
+//----------------------------------------------------------------------
+// Implementation
+
+SVGIFrameElement::SVGIFrameElement(already_AddRefed<nsINodeInfo>& aNodeInfo,
+                                   FromParser aFromParser)
+  : SVGIFrameElementBase(aNodeInfo)
+  , nsElementFrameLoaderOwner(aFromParser)
+{
+}
+
+//----------------------------------------------------------------------
+// nsSVGElement methods
+
+/* virtual */ gfxMatrix
+SVGIFrameElement::PrependLocalTransformsTo(const gfxMatrix &aMatrix,
+                                           TransformTypes aWhich) const
+{
+  NS_ABORT_IF_FALSE(aWhich != eChildToUserSpace || aMatrix.IsIdentity(),
+                    "Skipping eUserSpaceToParent transforms makes no sense");
+
+  // 'transform' attribute:
+  gfxMatrix fromUserSpace =
+    SVGGraphicsElement::PrependLocalTransformsTo(aMatrix, aWhich);
+  if (aWhich == eUserSpaceToParent) {
+    return fromUserSpace;
+  }
+  // our 'x' and 'y' attributes:
+  float x, y;
+  const_cast<SVGIFrameElement*>(this)->
+    GetAnimatedLengthValues(&x, &y, nullptr);
+  gfxMatrix toUserSpace = gfxMatrix().Translate(gfxPoint(x, y));
+  if (aWhich == eChildToUserSpace) {
+    return toUserSpace;
+  }
+  NS_ABORT_IF_FALSE(aWhich == eAllTransforms, "Unknown TransformTypes");
+  return toUserSpace * fromUserSpace;
+}
+
+
+//----------------------------------------------------------------------
+// nsIDOMNode methods
+
+nsresult
+SVGIFrameElement::Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const
+{
+  *aResult = nullptr;
+  already_AddRefed<nsINodeInfo> ni = nsCOMPtr<nsINodeInfo>(aNodeInfo).forget();
+  SVGIFrameElement *it = new SVGIFrameElement(ni, NOT_FROM_PARSER);
+
+  nsCOMPtr<nsINode> kungFuDeathGrip = it;
+  nsresult rv1 = it->Init();
+  nsresult rv2 = const_cast<SVGIFrameElement*>(this)->CopyInnerTo(it);
+  if (NS_SUCCEEDED(rv1) && NS_SUCCEEDED(rv2)) {
+    kungFuDeathGrip.swap(*aResult);
+  }
+
+  return NS_FAILED(rv1) ? rv1 : rv2;
+}
+
+//----------------------------------------------------------------------
+// nsSVGElement methods
+
+nsSVGElement::LengthAttributesInfo
+SVGIFrameElement::GetLengthInfo()
+{
+  return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
+                              ArrayLength(sLengthInfo));
+}
+
+SVGAnimatedPreserveAspectRatio *
+SVGIFrameElement::GetPreserveAspectRatio()
+{
+  return &mPreserveAspectRatio;
+}
+
+//----------------------------------------------------------------------
+// nsIDOMSVGIFrameElement methods:
+
+already_AddRefed<SVGAnimatedLength>
+SVGIFrameElement::X()
+{
+  return mLengthAttributes[ATTR_X].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<SVGAnimatedLength>
+SVGIFrameElement::Y()
+{
+  return mLengthAttributes[ATTR_Y].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<SVGAnimatedLength>
+SVGIFrameElement::Width()
+{
+  return mLengthAttributes[ATTR_WIDTH].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<SVGAnimatedLength>
+SVGIFrameElement::Height()
+{
+  return mLengthAttributes[ATTR_HEIGHT].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<DOMSVGAnimatedPreserveAspectRatio>
+SVGIFrameElement::PreserveAspectRatio()
+{
+  nsRefPtr<DOMSVGAnimatedPreserveAspectRatio> ratio;
+  mPreserveAspectRatio.ToDOMAnimatedPreserveAspectRatio(getter_AddRefs(ratio),
+                                                        this);
+  return ratio.forget();
+}
+
+void
+SVGIFrameElement::GetName(DOMString& name)
+{
+  GetAttr(kNameSpaceID_None, nsGkAtoms::name, name);
+}
+
+void
+SVGIFrameElement::GetSrc(DOMString& src)
+{
+  GetAttr(kNameSpaceID_None, nsGkAtoms::src, src);
+}
+
+void
+SVGIFrameElement::GetSrcdoc(DOMString& srcdoc)
+{
+  GetAttr(kNameSpaceID_None, nsGkAtoms::srcdoc, srcdoc);
+}
+
+already_AddRefed<nsDOMSettableTokenList>
+SVGIFrameElement::Sandbox()
+{
+  return GetTokenList(nsGkAtoms::sandbox);
+}
+
+bool
+SVGIFrameElement::ParseAttribute(int32_t aNamespaceID,
+                                 nsIAtom* aAttribute,
+                                 const nsAString& aValue,
+                                 nsAttrValue& aResult)
+{
+  if (aNamespaceID == kNameSpaceID_None) {
+    if (aAttribute == nsGkAtoms::sandbox) {
+      aResult.ParseAtomArray(aValue);
+      return true;
+    }
+  }
+  return SVGIFrameElementBase::ParseAttribute(aNamespaceID, aAttribute,
+                                              aValue, aResult);
+}
+
+nsresult
+SVGIFrameElement::SetAttr(int32_t aNameSpaceID, nsIAtom* aName,
+                          nsIAtom* aPrefix, const nsAString& aValue,
+                          bool aNotify)
+{
+  nsresult rv = nsSVGElement::SetAttr(aNameSpaceID, aName, aPrefix,
+                                      aValue, aNotify);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (aNameSpaceID == kNameSpaceID_None) {
+    if (aName == nsGkAtoms::src &&
+        !HasAttr(kNameSpaceID_None,nsGkAtoms::srcdoc)) {
+      // Don't propagate error here. The attribute was successfully set, that's
+      // what we should reflect.
+      LoadSrc();
+    }
+    if (aName == nsGkAtoms::srcdoc) {
+      // Don't propagate error here. The attribute was successfully set, that's
+      // what we should reflect.
+      LoadSrc();
+    }
+  }
+  return NS_OK;
+}
+
+nsresult
+SVGIFrameElement::AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
+                               const nsAttrValue* aValue,
+                               bool aNotify)
+{
+  if (aNameSpaceID == kNameSpaceID_None) {
+    if (aName == nsGkAtoms::sandbox && mFrameLoader) {
+      // If we have an nsFrameLoader, apply the new sandbox flags.
+      // Since this is called after the setter, the sandbox flags have
+      // alreay been updated.
+      mFrameLoader->ApplySandboxFlags(GetSandboxFlags());
+    }
+  }
+  return nsSVGElement::AfterSetAttr(aNameSpaceID, aName, aValue, aNotify);
+}
+
+nsresult
+SVGIFrameElement::UnsetAttr(int32_t aNameSpaceID, nsIAtom* aAttribute,
+                            bool aNotify)
+{
+  // Invoke on the superclass.
+  nsresult rv = nsSVGElement::UnsetAttr(aNameSpaceID, aAttribute, aNotify);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (aNameSpaceID == kNameSpaceID_None) {
+    if (aAttribute == nsGkAtoms::srcdoc) {
+      // Fall back to the src attribute, if any
+      LoadSrc();
+    }
+  }
+
+  return NS_OK;
+}
+
+uint32_t
+SVGIFrameElement::GetSandboxFlags()
+{
+  const nsAttrValue* sandboxAttr = GetParsedAttr(nsGkAtoms::sandbox);
+  return nsContentUtils::ParseSandboxAttributeToFlags(sandboxAttr);
+}
+
+nsresult
+SVGIFrameElement::BindToTree(nsIDocument* aDocument,
+                             nsIContent* aParent,
+                             nsIContent* aBindingParent,
+                             bool aCompileEventHandlers)
+{
+  nsresult rv = nsSVGElement::BindToTree(aDocument, aParent,
+                                         aBindingParent,
+                                         aCompileEventHandlers);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (aDocument) {
+    NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
+                 "Missing a script blocker!");
+
+    PROFILER_LABEL("SVGIFrameElement", "BindToTree");
+
+    // We're in a document now.  Kick off the frame load.
+    LoadSrc();
+
+    if (HasAttr(kNameSpaceID_None, nsGkAtoms::sandbox)) {
+      if (mFrameLoader) {
+        mFrameLoader->ApplySandboxFlags(GetSandboxFlags());
+      }
+    }
+  }
+
+  // We're now in document and scripts may move us, so clear
+  // the mNetworkCreated flag.
+  mNetworkCreated = false;
+  return rv;
+}
+
+void
+SVGIFrameElement::UnbindFromTree(bool aDeep, bool aNullParent)
+{
+  if (mFrameLoader) {
+    // This iframe is being taken out of the document, destroy the
+    // iframe's frame loader (doing that will tear down the window in
+    // this iframe).
+    // XXXbz we really want to only partially destroy the frame
+    // loader... we don't want to tear down the docshell.  Food for
+    // later bug.
+    mFrameLoader->Destroy();
+    mFrameLoader = nullptr;
+  }
+
+  nsSVGElement::UnbindFromTree(aDeep, aNullParent);
+}
+
+void
+SVGIFrameElement::DestroyContent()
+{
+  if (mFrameLoader) {
+    mFrameLoader->Destroy();
+    mFrameLoader = nullptr;
+  }
+
+  nsSVGElement::DestroyContent();
+}
+
+nsresult
+SVGIFrameElement::CopyInnerTo(Element* aDest)
+{
+  nsresult rv = nsSVGElement::CopyInnerTo(aDest);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsIDocument* doc = aDest->OwnerDoc();
+  if (doc->IsStaticDocument() && mFrameLoader) {
+    SVGIFrameElement* dest =
+      static_cast<SVGIFrameElement*>(aDest);
+    nsFrameLoader* fl = nsFrameLoader::Create(dest, false);
+    NS_ENSURE_STATE(fl);
+    dest->mFrameLoader = fl;
+    static_cast<nsFrameLoader*>(mFrameLoader.get())->CreateStaticClone(fl);
+  }
+
+  return rv;
+}
+
+} // namespace dom
+} // namespace mozilla