Add m-esr52 at 52.6.0

1 files changed, 247 insertions, 0 deletions

diff --git a/dom/svg/nsSVGViewBox.h b/dom/svg/nsSVGViewBox.h
new file mode 100644
index 000000000..9b046a965
--- /dev/null
+++ b/dom/svg/nsSVGViewBox.h
@@ -0,0 +1,247 @@
+/* -*- 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/. */
+
+#ifndef __NS_SVGVIEWBOX_H__
+#define __NS_SVGVIEWBOX_H__
+
+#include "nsAutoPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsError.h"
+#include "mozilla/dom/SVGAnimatedRect.h"
+#include "mozilla/dom/SVGIRect.h"
+#include "nsISMILAttr.h"
+#include "nsSVGElement.h"
+#include "mozilla/Attributes.h"
+#include "nsSVGAttrTearoffTable.h"
+
+class nsSMILValue;
+
+namespace mozilla {
+namespace dom {
+class SVGAnimationElement;
+} // namespace dom
+} // namespace mozilla
+
+struct nsSVGViewBoxRect
+{
+  float x, y;
+  float width, height;
+  bool none;
+
+  nsSVGViewBoxRect() : none(true) {}
+  nsSVGViewBoxRect(float aX, float aY, float aWidth, float aHeight) :
+    x(aX), y(aY), width(aWidth), height(aHeight), none(false) {}
+  nsSVGViewBoxRect(const nsSVGViewBoxRect& rhs) :
+    x(rhs.x), y(rhs.y), width(rhs.width), height(rhs.height), none(rhs.none) {}
+  bool operator==(const nsSVGViewBoxRect& aOther) const;
+};
+
+class nsSVGViewBox
+{
+public:
+
+  void Init();
+
+  /**
+   * Returns true if the corresponding "viewBox" attribute defined a rectangle
+   * with finite values and nonnegative width/height.
+   * Returns false if the viewBox was set to an invalid
+   * string, or if any of the four rect values were too big to store in a
+   * float, or the width/height are negative.
+   */
+  bool HasRect() const;
+
+  /**
+   * Returns true if the corresponding "viewBox" attribute either defined a
+   * rectangle with finite values or the special "none" value.
+   */
+  bool IsExplicitlySet() const
+    {
+      if (mAnimVal || mHasBaseVal) {
+        const nsSVGViewBoxRect& rect = GetAnimValue();
+        return rect.none || (rect.width >= 0 && rect.height >= 0);
+      }
+      return false;
+    }
+
+  const nsSVGViewBoxRect& GetBaseValue() const
+    { return mBaseVal; }
+  void SetBaseValue(const nsSVGViewBoxRect& aRect,
+                    nsSVGElement *aSVGElement);
+  const nsSVGViewBoxRect& GetAnimValue() const
+    { return mAnimVal ? *mAnimVal : mBaseVal; }
+  void SetAnimValue(const nsSVGViewBoxRect& aRect,
+                    nsSVGElement *aSVGElement);
+
+  nsresult SetBaseValueString(const nsAString& aValue,
+                              nsSVGElement *aSVGElement,
+                              bool aDoSetAttr);
+  void GetBaseValueString(nsAString& aValue) const;
+
+  already_AddRefed<mozilla::dom::SVGAnimatedRect>
+  ToSVGAnimatedRect(nsSVGElement *aSVGElement);
+
+  already_AddRefed<mozilla::dom::SVGIRect>
+  ToDOMBaseVal(nsSVGElement* aSVGElement);
+
+  already_AddRefed<mozilla::dom::SVGIRect>
+  ToDOMAnimVal(nsSVGElement* aSVGElement);
+
+  // Returns a new nsISMILAttr object that the caller must delete
+  nsISMILAttr* ToSMILAttr(nsSVGElement* aSVGElement);
+
+private:
+
+  nsSVGViewBoxRect mBaseVal;
+  nsAutoPtr<nsSVGViewBoxRect> mAnimVal;
+  bool mHasBaseVal;
+
+public:
+  struct DOMBaseVal final : public mozilla::dom::SVGIRect
+  {
+    NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+    NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMBaseVal)
+
+    DOMBaseVal(nsSVGViewBox *aVal, nsSVGElement *aSVGElement)
+      : mozilla::dom::SVGIRect()
+      , mVal(aVal)
+      , mSVGElement(aSVGElement)
+    {}
+
+    nsSVGViewBox* mVal; // kept alive because it belongs to content
+    RefPtr<nsSVGElement> mSVGElement;
+
+    float X() const override final
+    {
+      return mVal->GetBaseValue().x;
+    }
+
+    float Y() const override final
+    {
+      return mVal->GetBaseValue().y;
+    }
+
+    float Width() const override final
+    {
+      return mVal->GetBaseValue().width;
+    }
+
+    float Height() const override final
+    {
+      return mVal->GetBaseValue().height;
+    }
+
+    void SetX(float aX, mozilla::ErrorResult& aRv) final override;
+    void SetY(float aY, mozilla::ErrorResult& aRv) final override;
+    void SetWidth(float aWidth, mozilla::ErrorResult& aRv) final override;
+    void SetHeight(float aHeight, mozilla::ErrorResult& aRv) final override;
+
+    virtual nsIContent* GetParentObject() const override
+    {
+      return mSVGElement;
+    }
+
+  private:
+    virtual ~DOMBaseVal();
+  };
+
+  struct DOMAnimVal final : public mozilla::dom::SVGIRect
+  {
+    NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+    NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMAnimVal)
+
+    DOMAnimVal(nsSVGViewBox *aVal, nsSVGElement *aSVGElement)
+      : mozilla::dom::SVGIRect()
+      , mVal(aVal)
+      , mSVGElement(aSVGElement)
+    {}
+
+    nsSVGViewBox* mVal; // kept alive because it belongs to content
+    RefPtr<nsSVGElement> mSVGElement;
+
+    // Script may have modified animation parameters or timeline -- DOM getters
+    // need to flush any resample requests to reflect these modifications.
+    float X() const override final
+    {
+      mSVGElement->FlushAnimations();
+      return mVal->GetAnimValue().x;
+    }
+
+    float Y() const override final
+    {
+      mSVGElement->FlushAnimations();
+      return mVal->GetAnimValue().y;
+    }
+
+    float Width() const override final
+    {
+      mSVGElement->FlushAnimations();
+      return mVal->GetAnimValue().width;
+    }
+
+    float Height() const override final
+    {
+      mSVGElement->FlushAnimations();
+      return mVal->GetAnimValue().height;
+    }
+
+    void SetX(float aX, mozilla::ErrorResult& aRv) final override
+    {
+      aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
+    }
+
+    void SetY(float aY, mozilla::ErrorResult& aRv) final override
+    {
+      aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
+    }
+
+    void SetWidth(float aWidth, mozilla::ErrorResult& aRv) final override
+    {
+      aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
+    }
+
+    void SetHeight(float aHeight, mozilla::ErrorResult& aRv) final override
+    {
+      aRv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
+    }
+
+    virtual nsIContent* GetParentObject() const override
+    {
+      return mSVGElement;
+    }
+
+  private:
+    virtual ~DOMAnimVal();
+
+  };
+
+  struct SMILViewBox : public nsISMILAttr
+  {
+  public:
+    SMILViewBox(nsSVGViewBox* aVal, nsSVGElement* aSVGElement)
+      : mVal(aVal), mSVGElement(aSVGElement) {}
+
+    // These will stay alive because a nsISMILAttr only lives as long
+    // as the Compositing step, and DOM elements don't get a chance to
+    // die during that.
+    nsSVGViewBox* mVal;
+    nsSVGElement* mSVGElement;
+
+    // nsISMILAttr methods
+    virtual nsresult ValueFromString(const nsAString& aStr,
+                                     const mozilla::dom::SVGAnimationElement* aSrcElement,
+                                     nsSMILValue& aValue,
+                                     bool& aPreventCachingOfSandwich) const override;
+    virtual nsSMILValue GetBaseValue() const override;
+    virtual void ClearAnimValue() override;
+    virtual nsresult SetAnimValue(const nsSMILValue& aValue) override;
+  };
+
+  static nsSVGAttrTearoffTable<nsSVGViewBox, mozilla::dom::SVGAnimatedRect>
+    sSVGAnimatedRectTearoffTable;
+};
+
+#endif // __NS_SVGVIEWBOX_H__