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6ef51d3561
This can cause an issue where removing a state looks as though it didn't invalidate, because the internal representation contains multiple copies of the same state ident. Differential Revision: https://phabricator.services.mozilla.com/D205518
103 lines
3 KiB
C++
103 lines
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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CustomStateSet.h"
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#include "mozilla/dom/ElementInternalsBinding.h"
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#include "mozilla/dom/HTMLElement.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/PresShell.h"
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namespace mozilla::dom {
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(CustomStateSet, mTarget);
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NS_IMPL_CYCLE_COLLECTING_ADDREF(CustomStateSet)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(CustomStateSet)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CustomStateSet)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_END
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CustomStateSet::CustomStateSet(HTMLElement* aTarget) : mTarget(aTarget) {}
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// WebIDL interface
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nsISupports* CustomStateSet::GetParentObject() const {
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return ToSupports(mTarget);
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}
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JSObject* CustomStateSet::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return CustomStateSet_Binding::Wrap(aCx, this, aGivenProto);
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}
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void CustomStateSet::Clear(ErrorResult& aRv) {
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CustomStateSet_Binding::SetlikeHelpers::Clear(this, aRv);
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if (aRv.Failed()) {
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return;
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}
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nsTArray<RefPtr<nsAtom>>& states = mTarget->EnsureCustomStates();
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Document* doc = mTarget->GetComposedDoc();
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PresShell* presShell = doc ? doc->GetPresShell() : nullptr;
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if (presShell) {
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presShell->CustomStatesWillChange(*mTarget);
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// Iterate over each state to ensure each one is invalidated.
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while (!states.IsEmpty()) {
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RefPtr<nsAtom> atom = states.PopLastElement();
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presShell->CustomStateChanged(*mTarget, atom);
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}
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return;
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}
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states.Clear();
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}
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bool CustomStateSet::Delete(const nsAString& aState, ErrorResult& aRv) {
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CustomStateSet_Binding::SetlikeHelpers::Delete(this, aState, aRv);
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if (aRv.Failed()) {
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return false;
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}
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RefPtr<nsAtom> atom = NS_AtomizeMainThread(aState);
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Document* doc = mTarget->GetComposedDoc();
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PresShell* presShell = doc ? doc->GetPresShell() : nullptr;
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if (presShell) {
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presShell->CustomStatesWillChange(*mTarget);
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}
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bool deleted = mTarget->EnsureCustomStates().RemoveElement(atom);
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if (presShell) {
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presShell->CustomStateChanged(*mTarget, atom);
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}
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return deleted;
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}
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void CustomStateSet::Add(const nsAString& aState, ErrorResult& aRv) {
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CustomStateSet_Binding::SetlikeHelpers::Add(this, aState, aRv);
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if (aRv.Failed()) {
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return;
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}
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nsTArray<RefPtr<nsAtom>>& states = mTarget->EnsureCustomStates();
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RefPtr<nsAtom> atom = NS_AtomizeMainThread(aState);
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if (states.Contains(atom)) {
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return;
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}
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Document* doc = mTarget->GetComposedDoc();
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PresShell* presShell = doc ? doc->GetPresShell() : nullptr;
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if (presShell) {
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presShell->CustomStatesWillChange(*mTarget);
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}
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states.AppendElement(atom);
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if (presShell) {
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presShell->CustomStateChanged(*mTarget, atom);
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}
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}
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} // namespace mozilla::dom
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