Add m-esr52 at 52.6.0

1 files changed, 187 insertions, 0 deletions

diff --git a/dom/svg/nsISVGPoint.h b/dom/svg/nsISVGPoint.h
new file mode 100644
index 000000000..4c075e8d3
--- /dev/null
+++ b/dom/svg/nsISVGPoint.h
@@ -0,0 +1,187 @@
+/* -*- 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/. */
+
+#pragma once
+
+#include "nsCycleCollectionParticipant.h"
+#include "nsWrapperCache.h"
+#include "mozilla/dom/SVGPointBinding.h"
+#include "DOMSVGPointList.h"
+
+// {d6b6c440-af8d-40ee-856b-02a317cab275}
+#define MOZILLA_NSISVGPOINT_IID \
+  { 0xd6b6c440, 0xaf8d, 0x40ee, \
+    { 0x85, 0x6b, 0x02, 0xa3, 0x17, 0xca, 0xb2, 0x75 } }
+
+#define MOZ_SVG_LIST_INDEX_BIT_COUNT 29
+
+namespace mozilla {
+
+namespace dom {
+class SVGMatrix;
+} // namespace dom
+
+/**
+ * Class nsISVGPoint
+ *
+ * This class creates the DOM objects that wrap internal SVGPoint objects.
+ * An nsISVGPoint can be either a DOMSVGPoint or a DOMSVGTranslatePoint
+ */
+class nsISVGPoint : public nsISupports,
+                    public nsWrapperCache
+{
+public:
+  NS_DECLARE_STATIC_IID_ACCESSOR(MOZILLA_NSISVGPOINT_IID)
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(nsISVGPoint)
+
+  /**
+   * Generic ctor for DOMSVGPoint objects that are created for an attribute.
+   */
+  explicit nsISVGPoint()
+    : mList(nullptr)
+    , mListIndex(0)
+    , mIsReadonly(false)
+    , mIsAnimValItem(false)
+    , mIsTranslatePoint(false)
+  {
+  }
+
+  explicit nsISVGPoint(SVGPoint* aPt, bool aIsTranslatePoint)
+    : mList(nullptr)
+    , mListIndex(0)
+    , mIsReadonly(false)
+    , mIsAnimValItem(false)
+    , mIsTranslatePoint(aIsTranslatePoint)
+  {
+    mPt.mX = aPt->GetX();
+    mPt.mY = aPt->GetY();
+  }
+
+protected:
+  virtual ~nsISVGPoint()
+  {
+    // Our mList's weak ref to us must be nulled out when we die. If GC has
+    // unlinked us using the cycle collector code, then that has already
+    // happened, and mList is null.
+    if (mList) {
+      mList->mItems[mListIndex] = nullptr;
+    }
+  }
+
+public:
+  /**
+   * Creates an unowned copy of this object's point as a DOMSVGPoint.
+   */
+  virtual DOMSVGPoint* Copy() = 0;
+
+  SVGPoint ToSVGPoint() const {
+    return HasOwner() ? const_cast<nsISVGPoint*>(this)->InternalItem() : mPt;
+  }
+
+  bool IsInList() const {
+    return !!mList;
+  }
+
+  /**
+   * In future, if this class is used for non-list points, this will be
+   * different to IsInList(). "Owner" here means that the instance has an
+   * internal counterpart from which it gets its values. (A better name may
+   * be HasWrappee().)
+   */
+  bool HasOwner() const {
+    return !!mList;
+  }
+
+  bool IsTranslatePoint() const {
+    return mIsTranslatePoint;
+  }
+
+  /**
+   * This method is called to notify this DOM object that it is being inserted
+   * into a list, and give it the information it needs as a result.
+   *
+   * This object MUST NOT already belong to a list when this method is called.
+   * That's not to say that script can't move these DOM objects between
+   * lists - it can - it's just that the logic to handle that (and send out
+   * the necessary notifications) is located elsewhere (in DOMSVGPointList).)
+   */
+  void InsertingIntoList(DOMSVGPointList *aList,
+                         uint32_t aListIndex,
+                         bool aIsAnimValItem);
+
+  static uint32_t MaxListIndex() {
+    return (1U << MOZ_SVG_LIST_INDEX_BIT_COUNT) - 1;
+  }
+
+  /// This method is called to notify this object that its list index changed.
+  void UpdateListIndex(uint32_t aListIndex) {
+    mListIndex = aListIndex;
+  }
+
+  /**
+   * This method is called to notify this DOM object that it is about to be
+   * removed from its current DOM list so that it can first make a copy of its
+   * internal counterpart's values. (If it didn't do this, then it would
+   * "lose" its value on being removed.)
+   */
+  void RemovingFromList();
+
+  bool IsReadonly() const {
+    return mIsReadonly;
+  }
+  void SetReadonly(bool aReadonly) {
+    mIsReadonly = aReadonly;
+  }
+
+  // WebIDL
+  virtual float X() = 0;
+  virtual void SetX(float aX, ErrorResult& rv) = 0;
+  virtual float Y() = 0;
+  virtual void SetY(float aY, ErrorResult& rv) = 0;
+  virtual already_AddRefed<nsISVGPoint> MatrixTransform(dom::SVGMatrix& matrix) = 0;
+  virtual JSObject* WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override
+    { return dom::SVGPointBinding::Wrap(cx, this, aGivenProto); }
+
+  virtual nsISupports* GetParentObject() = 0;
+
+protected:
+#ifdef DEBUG
+  bool IndexIsValid();
+#endif
+
+  RefPtr<DOMSVGPointList> mList;
+
+  // Bounds for the following are checked in the ctor, so be sure to update
+  // that if you change the capacity of any of the following.
+
+  uint32_t mListIndex:MOZ_SVG_LIST_INDEX_BIT_COUNT;
+  uint32_t mIsReadonly:1;       // These flags are uint32_t because MSVC won't
+  uint32_t mIsAnimValItem:1;    // pack otherwise.
+  uint32_t mIsTranslatePoint:1;
+
+  /**
+   * Get a reference to the internal SVGPoint list item that this DOM wrapper
+   * object currently wraps.
+   *
+   * To simplify the code we just have this one method for obtaining both
+   * baseVal and animVal internal items. This means that animVal items don't
+   * get const protection, but then our setter methods guard against changing
+   * animVal items.
+   */
+  SVGPoint& InternalItem();
+
+  // The following member is only used when we're not in a list:
+  SVGPoint mPt;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(nsISVGPoint, MOZILLA_NSISVGPOINT_IID)
+
+} // namespace mozilla
+
+#undef MOZ_SVG_LIST_INDEX_BIT_COUNT
+
+