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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 et tw=78: */
/* 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_dom_TextTrackRegion_h
#define mozilla_dom_TextTrackRegion_h
#include "nsCycleCollectionParticipant.h"
#include "nsString.h"
#include "nsWrapperCache.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/TextTrack.h"
#include "mozilla/dom/VTTRegionBinding.h"
#include "mozilla/Preferences.h"
namespace mozilla {
namespace dom {
class GlobalObject;
class TextTrack;
class TextTrackRegion final : public nsISupports, public nsWrapperCache {
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(TextTrackRegion)
JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
nsISupports* GetParentObject() const { return mParent; }
explicit TextTrackRegion(nsISupports* aGlobal);
/** WebIDL Methods. */
static already_AddRefed<TextTrackRegion> Constructor(
const GlobalObject& aGlobal, ErrorResult& aRv);
double Lines() const { return mLines; }
void SetLines(double aLines, ErrorResult& aRv) {
if (aLines < 0) {
aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
} else {
mLines = aLines;
}
}
double Width() const { return mWidth; }
void SetWidth(double aWidth, ErrorResult& aRv) {
if (!InvalidValue(aWidth, aRv)) {
mWidth = aWidth;
}
}
double RegionAnchorX() const { return mRegionAnchorX; }
void SetRegionAnchorX(double aVal, ErrorResult& aRv) {
if (!InvalidValue(aVal, aRv)) {
mRegionAnchorX = aVal;
}
}
double RegionAnchorY() const { return mRegionAnchorY; }
void SetRegionAnchorY(double aVal, ErrorResult& aRv) {
if (!InvalidValue(aVal, aRv)) {
mRegionAnchorY = aVal;
}
}
double ViewportAnchorX() const { return mViewportAnchorX; }
void SetViewportAnchorX(double aVal, ErrorResult& aRv) {
if (!InvalidValue(aVal, aRv)) {
mViewportAnchorX = aVal;
}
}
double ViewportAnchorY() const { return mViewportAnchorY; }
void SetViewportAnchorY(double aVal, ErrorResult& aRv) {
if (!InvalidValue(aVal, aRv)) {
mViewportAnchorY = aVal;
}
}
ScrollSetting Scroll() const { return mScroll; }
void SetScroll(const ScrollSetting& aScroll) {
if (aScroll == ScrollSetting::_empty || aScroll == ScrollSetting::Up) {
mScroll = aScroll;
}
}
void GetId(nsAString& aId) const { aId = mId; }
void SetId(const nsAString& aId) { mId = aId; }
/** end WebIDL Methods. */
// Helper to aid copying of a given TextTrackRegion's width, lines,
// anchor, viewport and scroll values.
void CopyValues(TextTrackRegion& aRegion);
// -----helpers-------
const nsAString& Id() const { return mId; }
private:
~TextTrackRegion() = default;
nsCOMPtr<nsISupports> mParent;
nsString mId;
double mWidth;
long mLines;
double mRegionAnchorX;
double mRegionAnchorY;
double mViewportAnchorX;
double mViewportAnchorY;
ScrollSetting mScroll;
// Helper to ensure new value is in the range: 0.0% - 100.0%; throws
// an IndexSizeError otherwise.
inline bool InvalidValue(double aValue, ErrorResult& aRv) {
if (aValue < 0.0 || aValue > 100.0) {
aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
return true;
}
return false;
}
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_TextTrackRegion_h