forked from mirrors/gecko-dev
92ef542dba
Ths patch introduces a new class called `CrossShadowBoundaryRange` to make cross shadow boundary range related stuff can be isolated into a single class. It also tweaks a few functions along the call stack, the goal here is to make sure nsContentUtils::IsPointInSelection can detect points in ShadowDOM selection. There's an additional change to `SelectionUtils.sys.mjs` to make sure the correct context menu items are displayed when the current selection crosses the boundary. Differential Revision: https://phabricator.services.mozilla.com/D204080
89 lines
3.3 KiB
C++
89 lines
3.3 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_CrossShadowBoundaryRange_h
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#define mozilla_dom_CrossShadowBoundaryRange_h
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#include "mozilla/RangeBoundary.h"
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#include "mozilla/RangeUtils.h"
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#include "mozilla/dom/AbstractRange.h"
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#include "mozilla/dom/StaticRange.h"
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#include "nsTArray.h"
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namespace mozilla {
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class ErrorResult;
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namespace dom {
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class CrossShadowBoundaryRange final : public StaticRange {
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_IMETHODIMP_(void) DeleteCycleCollectable(void) override;
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(
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CrossShadowBoundaryRange, StaticRange)
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CrossShadowBoundaryRange() = delete;
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explicit CrossShadowBoundaryRange(const StaticRange& aOther) = delete;
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template <typename SPT, typename SRT, typename EPT, typename ERT>
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static already_AddRefed<CrossShadowBoundaryRange> Create(
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const RangeBoundaryBase<SPT, SRT>& aStartBoundary,
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const RangeBoundaryBase<EPT, ERT>& aEndBoundary);
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void NotifyNodeBecomesShadowHost(nsINode* aNode) {
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if (aNode == mStart.Container()) {
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mStart.NotifyParentBecomesShadowHost();
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}
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if (aNode == mEnd.Container()) {
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mEnd.NotifyParentBecomesShadowHost();
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}
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}
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nsINode* GetCommonAncestor() const { return mCommonAncestor; }
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// CrossShadowBoundaryRange should have a very limited usage.
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nsresult SetStartAndEnd(nsINode* aStartContainer, uint32_t aStartOffset,
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nsINode* aEndContainer, uint32_t aEndOffset) = delete;
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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 StaticRange::SetStartAndEnd(aStartBoundary, aEndBoundary);
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}
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private:
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explicit CrossShadowBoundaryRange(nsINode* aNode) : StaticRange(aNode) {}
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virtual ~CrossShadowBoundaryRange() = default;
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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 of aStartBoundary or aEndBoundary.
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* It's useless to CrossShadowBoundaryRange.
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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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// This is either NULL if this CrossShadowBoundaryRange has been
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// reset by Release() or the closest common shadow-including ancestor
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// of mStart and mEnd.
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nsCOMPtr<nsINode> mCommonAncestor;
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static nsTArray<RefPtr<CrossShadowBoundaryRange>>* sCachedRanges;
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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_CrossShadowBoundaryRange_h
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