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/* -*- Mode: C++; tab-width: 8; 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/. */
#ifndef MOZILLA_DOMRECT_H_
#define MOZILLA_DOMRECT_H_
#include "js/StructuredClone.h"
#include "nsIDOMClientRect.h"
#include "nsIDOMClientRectList.h"
#include "nsTArray.h"
#include "nsCOMPtr.h"
#include "nsWrapperCache.h"
#include "nsCycleCollectionParticipant.h"
#include "mozilla/Attributes.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/ErrorResult.h"
#include <algorithm>
struct nsRect;
namespace mozilla {
namespace dom {
struct DOMRectInit;
class DOMRectReadOnly : public nsISupports
, public nsWrapperCache
{
protected:
virtual ~DOMRectReadOnly() {}
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMRectReadOnly)
explicit DOMRectReadOnly(nsISupports* aParent, double aX = 0, double aY = 0,
double aWidth = 0, double aHeight = 0)
: mParent(aParent)
, mX(aX)
, mY(aY)
, mWidth(aWidth)
, mHeight(aHeight)
{
}
nsISupports* GetParentObject() const
{
MOZ_ASSERT(mParent);
return mParent;
}
virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
static already_AddRefed<DOMRectReadOnly>
FromRect(const GlobalObject& aGlobal, const DOMRectInit& aInit);
static already_AddRefed<DOMRectReadOnly>
Constructor(const GlobalObject& aGlobal, double aX, double aY,
double aWidth, double aHeight, ErrorResult& aRv);
double X() const
{
return mX;
}
double Y() const
{
return mY;
}
double Width() const
{
return mWidth;
}
double Height() const
{
return mHeight;
}
double Left() const
{
double x = X(), w = Width();
return std::min(x, x + w);
}
double Top() const
{
double y = Y(), h = Height();
return std::min(y, y + h);
}
double Right() const
{
double x = X(), w = Width();
return std::max(x, x + w);
}
double Bottom() const
{
double y = Y(), h = Height();
return std::max(y, y + h);
}
bool WriteStructuredClone(JSStructuredCloneWriter* aWriter) const;
bool ReadStructuredClone(JSStructuredCloneReader* aReader);
protected:
nsCOMPtr<nsISupports> mParent;
double mX, mY, mWidth, mHeight;
};
class DOMRect final : public DOMRectReadOnly
, public nsIDOMClientRect
{
public:
explicit DOMRect(nsISupports* aParent, double aX = 0, double aY = 0,
double aWidth = 0, double aHeight = 0)
: DOMRectReadOnly(aParent, aX, aY, aWidth, aHeight)
{
}
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSIDOMCLIENTRECT
static already_AddRefed<DOMRect>
FromRect(const GlobalObject& aGlobal, const DOMRectInit& aInit);
static already_AddRefed<DOMRect>
Constructor(const GlobalObject& aGlobal, double aX, double aY,
double aWidth, double aHeight, ErrorResult& aRv);
virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
void SetRect(float aX, float aY, float aWidth, float aHeight) {
mX = aX; mY = aY; mWidth = aWidth; mHeight = aHeight;
}
void SetLayoutRect(const nsRect& aLayoutRect);
void SetX(double aX)
{
mX = aX;
}
void SetY(double aY)
{
mY = aY;
}
void SetWidth(double aWidth)
{
mWidth = aWidth;
}
void SetHeight(double aHeight)
{
mHeight = aHeight;
}
private:
~DOMRect() {}
};
class DOMRectList final : public nsIDOMClientRectList,
public nsWrapperCache
{
~DOMRectList() {}
public:
explicit DOMRectList(nsISupports *aParent) : mParent(aParent)
{
}
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMRectList)
NS_DECL_NSIDOMCLIENTRECTLIST
virtual JSObject* WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override;
nsISupports* GetParentObject()
{
return mParent;
}
void Append(DOMRect* aElement) { mArray.AppendElement(aElement); }
static DOMRectList* FromSupports(nsISupports* aSupports)
{
#ifdef DEBUG
{
nsCOMPtr<nsIDOMClientRectList> list_qi = do_QueryInterface(aSupports);
// If this assertion fires the QI implementation for the object in
// question doesn't use the nsIDOMClientRectList pointer as the nsISupports
// pointer. That must be fixed, or we'll crash...
NS_ASSERTION(list_qi == static_cast<nsIDOMClientRectList*>(aSupports),
"Uh, fix QI!");
}
#endif
return static_cast<DOMRectList*>(aSupports);
}
uint32_t Length()
{
return mArray.Length();
}
DOMRect* Item(uint32_t aIndex)
{
return mArray.SafeElementAt(aIndex);
}
DOMRect* IndexedGetter(uint32_t aIndex, bool& aFound)
{
aFound = aIndex < mArray.Length();
if (!aFound) {
return nullptr;
}
return mArray[aIndex];
}
protected:
nsTArray<RefPtr<DOMRect> > mArray;
nsCOMPtr<nsISupports> mParent;
};
} // namespace dom
} // namespace mozilla
#endif /*MOZILLA_DOMRECT_H_*/
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