зеркало из https://github.com/mozilla/gecko-dev.git
106 строки
4.4 KiB
C++
106 строки
4.4 KiB
C++
/* -*- 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 mozilla_dom_StaticRange_h
|
|
#define mozilla_dom_StaticRange_h
|
|
|
|
#include "mozilla/ErrorResult.h"
|
|
#include "mozilla/RangeBoundary.h"
|
|
#include "mozilla/dom/AbstractRange.h"
|
|
#include "nsWrapperCache.h"
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
class StaticRange final : public AbstractRange {
|
|
public:
|
|
explicit StaticRange(nsINode* aNode) : AbstractRange(aNode) {}
|
|
StaticRange() = delete;
|
|
explicit StaticRange(const StaticRange& aOther) = delete;
|
|
|
|
/**
|
|
* Create() may return `StaticRange` instance which is initialized with
|
|
* given range or points. If it fails initializing new range with the
|
|
* arguments, returns `nullptr`. `ErrorResult` is set to an error only
|
|
* when this returns `nullptr`. The error code indicates the reason why
|
|
* it couldn't initialize the instance.
|
|
*/
|
|
static already_AddRefed<StaticRange> Create(
|
|
const AbstractRange* aAbstractRange, ErrorResult& aRv) {
|
|
MOZ_ASSERT(aAbstractRange);
|
|
return StaticRange::Create(aAbstractRange->StartRef(),
|
|
aAbstractRange->EndRef(), aRv);
|
|
}
|
|
static already_AddRefed<StaticRange> Create(nsINode* aStartContainer,
|
|
uint32_t aStartOffset,
|
|
nsINode* aEndContainer,
|
|
uint32_t aEndOffset,
|
|
ErrorResult& aRv) {
|
|
return StaticRange::Create(RawRangeBoundary(aStartContainer, aStartOffset),
|
|
RawRangeBoundary(aEndContainer, aEndOffset),
|
|
aRv);
|
|
}
|
|
template <typename SPT, typename SRT, typename EPT, typename ERT>
|
|
static already_AddRefed<StaticRange> Create(
|
|
const RangeBoundaryBase<SPT, SRT>& aStartBoundary,
|
|
const RangeBoundaryBase<EPT, ERT>& aEndBoundary, ErrorResult& aRv);
|
|
|
|
protected:
|
|
virtual ~StaticRange() = default;
|
|
|
|
public:
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
// Need to override this for calling `DoSetRange()` from
|
|
// `NS_IMPL_MAIN_THREAD_ONLY_CYCLE_COLLECTING_RELEASE_WITH_LAST_RELEASE()`.
|
|
NS_IMETHODIMP_(void) DeleteCycleCollectable(void) override;
|
|
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(StaticRange,
|
|
AbstractRange)
|
|
|
|
JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;
|
|
|
|
/**
|
|
* SetStartAndEnd() works similar to call both SetStart() and SetEnd().
|
|
* Different from calls them separately, this does nothing if either
|
|
* the start point or the end point is invalid point.
|
|
* If the specified start point is after the end point, the range will be
|
|
* collapsed at the end point. Similarly, if they are in different root,
|
|
* the range will be collapsed at the end point.
|
|
*/
|
|
nsresult SetStartAndEnd(nsINode* aStartContainer, uint32_t aStartOffset,
|
|
nsINode* aEndContainer, uint32_t aEndOffset) {
|
|
return SetStartAndEnd(RawRangeBoundary(aStartContainer, aStartOffset),
|
|
RawRangeBoundary(aEndContainer, aEndOffset));
|
|
}
|
|
template <typename SPT, typename SRT, typename EPT, typename ERT>
|
|
nsresult SetStartAndEnd(const RangeBoundaryBase<SPT, SRT>& aStartBoundary,
|
|
const RangeBoundaryBase<EPT, ERT>& aEndBoundary) {
|
|
return AbstractRange::SetStartAndEndInternal(aStartBoundary, aEndBoundary,
|
|
this);
|
|
}
|
|
|
|
protected:
|
|
/**
|
|
* DoSetRange() is called when `AbstractRange::SetStartAndEndInternal()` sets
|
|
* mStart and mEnd.
|
|
*
|
|
* @param aStartBoundary Computed start point. This must equals or be before
|
|
* aEndBoundary in the DOM tree order.
|
|
* @param aEndBoundary Computed end point.
|
|
* @param aRootNode The root node.
|
|
*/
|
|
template <typename SPT, typename SRT, typename EPT, typename ERT>
|
|
void DoSetRange(const RangeBoundaryBase<SPT, SRT>& aStartBoundary,
|
|
const RangeBoundaryBase<EPT, ERT>& aEndBoundary,
|
|
nsINode* aRootNode);
|
|
|
|
friend class AbstractRange;
|
|
};
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
|
|
#endif // #ifndef mozilla_dom_StaticRange_h
|