dom/svg/SVGSwitchElement.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/dom/SVGSwitchElement.h"
   8
   9 #include "nsLayoutUtils.h"
  10 #include "mozilla/SVGUtils.h"
  11 #include "mozilla/dom/SVGSwitchElementBinding.h"
  12
  13 class nsIFrame;
  14
  15 NS_IMPL_NS_NEW_SVG_ELEMENT(Switch)
  16
  17 namespace mozilla::dom {
  18
  19 JSObject* SVGSwitchElement::WrapNode(JSContext* aCx,
  20                                      JS::Handle<JSObject*> aGivenProto) {
  21   return SVGSwitchElement_Binding::Wrap(aCx, this, aGivenProto);
  22 }
  23
  24 //----------------------------------------------------------------------
  25 // nsISupports methods
  26
  27 NS_IMPL_CYCLE_COLLECTION_INHERITED(SVGSwitchElement, SVGSwitchElementBase,
  28                                    mActiveChild)
  29
  30 NS_IMPL_ADDREF_INHERITED(SVGSwitchElement, SVGSwitchElementBase)
  31 NS_IMPL_RELEASE_INHERITED(SVGSwitchElement, SVGSwitchElementBase)
  32
  33 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SVGSwitchElement)
  34 NS_INTERFACE_MAP_END_INHERITING(SVGSwitchElementBase)
  35
  36 //----------------------------------------------------------------------
  37 // Implementation
  38
  39 SVGSwitchElement::SVGSwitchElement(
  40     already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
  41     : SVGSwitchElementBase(std::move(aNodeInfo)) {}
  42
  43 void SVGSwitchElement::MaybeInvalidate() {
  44   // We must not change mActiveChild until after
  45   // InvalidateAndScheduleBoundsUpdate has been called, otherwise
  46   // it will not correctly invalidate the old mActiveChild area.
  47
  48   auto* newActiveChild = SVGTests::FindActiveSwitchChild(this);
  49
  50   if (newActiveChild == mActiveChild) {
  51     return;
  52   }
  53
  54   if (auto* frame = GetPrimaryFrame()) {
  55     nsLayoutUtils::PostRestyleEvent(this, RestyleHint{0},
  56                                     nsChangeHint_InvalidateRenderingObservers);
  57     SVGUtils::ScheduleReflowSVG(frame);
  58   }
  59
  60   mActiveChild = newActiveChild;
  61 }
  62
  63 //----------------------------------------------------------------------
  64 // nsINode methods
  65
  66 NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGSwitchElement)
  67
  68 //----------------------------------------------------------------------
  69 // nsINode methods
  70
  71 void SVGSwitchElement::InsertChildBefore(nsIContent* aKid,
  72                                          nsIContent* aBeforeThis, bool aNotify,
  73                                          ErrorResult& aRv) {
  74   SVGSwitchElementBase::InsertChildBefore(aKid, aBeforeThis, aNotify, aRv);
  75   if (aRv.Failed()) {
  76     return;
  77   }
  78
  79   MaybeInvalidate();
  80 }
  81
  82 void SVGSwitchElement::RemoveChildNode(nsIContent* aKid, bool aNotify) {
  83   SVGSwitchElementBase::RemoveChildNode(aKid, aNotify);
  84   MaybeInvalidate();
  85 }
  86
  87 }  // namespace mozilla::dom