зеркало из https://github.com/mozilla/gecko-dev.git
111 строки
4.7 KiB
C++
111 строки
4.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_StaticRange_h
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#define mozilla_dom_StaticRange_h
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#include "mozilla/ErrorResult.h"
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#include "mozilla/RangeBoundary.h"
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#include "mozilla/dom/AbstractRange.h"
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#include "mozilla/dom/StaticRangeBinding.h"
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#include "nsWrapperCache.h"
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namespace mozilla {
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namespace dom {
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class StaticRange final : public AbstractRange {
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public:
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explicit StaticRange(nsINode* aNode) : AbstractRange(aNode) {}
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StaticRange() = delete;
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explicit StaticRange(const StaticRange& aOther) = delete;
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static already_AddRefed<StaticRange> Constructor(const GlobalObject& global,
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const StaticRangeInit& init,
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ErrorResult& aRv);
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/**
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* Create() may return `StaticRange` instance which is initialized with
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* given range or points. If it fails initializing new range with the
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* arguments, returns `nullptr`. `ErrorResult` is set to an error only
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* when this returns `nullptr`. The error code indicates the reason why
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* it couldn't initialize the instance.
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*/
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static already_AddRefed<StaticRange> Create(
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const AbstractRange* aAbstractRange, ErrorResult& aRv) {
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MOZ_ASSERT(aAbstractRange);
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return StaticRange::Create(aAbstractRange->StartRef(),
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aAbstractRange->EndRef(), aRv);
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}
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static already_AddRefed<StaticRange> Create(nsINode* aStartContainer,
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uint32_t aStartOffset,
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nsINode* aEndContainer,
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uint32_t aEndOffset,
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ErrorResult& aRv) {
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return StaticRange::Create(RawRangeBoundary(aStartContainer, aStartOffset),
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RawRangeBoundary(aEndContainer, aEndOffset),
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aRv);
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}
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template <typename SPT, typename SRT, typename EPT, typename ERT>
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static already_AddRefed<StaticRange> Create(
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const RangeBoundaryBase<SPT, SRT>& aStartBoundary,
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const RangeBoundaryBase<EPT, ERT>& aEndBoundary, ErrorResult& aRv);
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protected:
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virtual ~StaticRange() = default;
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public:
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NS_DECL_ISUPPORTS_INHERITED
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// Need to override this for calling `DoSetRange()` from
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// `NS_IMPL_MAIN_THREAD_ONLY_CYCLE_COLLECTING_RELEASE_WITH_LAST_RELEASE()`.
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NS_IMETHODIMP_(void) DeleteCycleCollectable(void) override;
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(StaticRange,
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AbstractRange)
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JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;
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/**
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* SetStartAndEnd() works similar to call both SetStart() and SetEnd().
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* Different from calls them separately, this does nothing if either
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* the start point or the end point is invalid point.
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* If the specified start point is after the end point, the range will be
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* collapsed at the end point. Similarly, if they are in different root,
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* the range will be collapsed at the end point.
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*/
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nsresult SetStartAndEnd(nsINode* aStartContainer, uint32_t aStartOffset,
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nsINode* aEndContainer, uint32_t aEndOffset) {
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return SetStartAndEnd(RawRangeBoundary(aStartContainer, aStartOffset),
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RawRangeBoundary(aEndContainer, aEndOffset));
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}
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template <typename SPT, typename SRT, typename EPT, typename ERT>
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nsresult SetStartAndEnd(const RangeBoundaryBase<SPT, SRT>& aStartBoundary,
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const RangeBoundaryBase<EPT, ERT>& aEndBoundary) {
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return AbstractRange::SetStartAndEndInternal(aStartBoundary, aEndBoundary,
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this);
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}
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protected:
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/**
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* DoSetRange() is called when `AbstractRange::SetStartAndEndInternal()` sets
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* mStart and mEnd.
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*
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* @param aStartBoundary Computed start point. This must equals or be before
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* aEndBoundary in the DOM tree order.
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* @param aEndBoundary Computed end point.
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* @param aRootNode The root node.
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*/
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template <typename SPT, typename SRT, typename EPT, typename ERT>
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void DoSetRange(const RangeBoundaryBase<SPT, SRT>& aStartBoundary,
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const RangeBoundaryBase<EPT, ERT>& aEndBoundary,
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nsINode* aRootNode);
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friend class AbstractRange;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // #ifndef mozilla_dom_StaticRange_h
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