From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- dom/base/RadioGroupContainer.cpp | 202 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 202 insertions(+) create mode 100644 dom/base/RadioGroupContainer.cpp (limited to 'dom/base/RadioGroupContainer.cpp') diff --git a/dom/base/RadioGroupContainer.cpp b/dom/base/RadioGroupContainer.cpp new file mode 100644 index 0000000000..1d5abb78c6 --- /dev/null +++ b/dom/base/RadioGroupContainer.cpp @@ -0,0 +1,202 @@ +/* -*- 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/. */ + +#include "mozilla/dom/HTMLInputElement.h" +#include "mozilla/dom/RadioGroupContainer.h" +#include "mozilla/dom/TreeOrderedArrayInlines.h" +#include "mozilla/Assertions.h" +#include "nsIRadioVisitor.h" +#include "nsRadioVisitor.h" + +namespace mozilla::dom { + +/** + * A struct that holds all the information about a radio group. + */ +struct nsRadioGroupStruct { + nsRadioGroupStruct() + : mRequiredRadioCount(0), mGroupSuffersFromValueMissing(false) {} + + /** + * A strong pointer to the currently selected radio button. + */ + RefPtr mSelectedRadioButton; + TreeOrderedArray> mRadioButtons; + uint32_t mRequiredRadioCount; + bool mGroupSuffersFromValueMissing; +}; + +RadioGroupContainer::RadioGroupContainer() = default; + +RadioGroupContainer::~RadioGroupContainer() { + for (const auto& group : mRadioGroups) { + for (const auto& button : group.GetData()->mRadioButtons.AsList()) { + // When the radio group container is being cycle-collected, any remaining + // connected buttons will also be in the process of being cycle-collected. + // Here, we unset the button's reference to the container so that when it + // is collected it does not attempt to remove itself from a potentially + // already deleted radio group. + button->DisconnectRadioGroupContainer(); + } + } +} + +/* static */ +void RadioGroupContainer::Traverse(RadioGroupContainer* tmp, + nsCycleCollectionTraversalCallback& cb) { + for (const auto& entry : tmp->mRadioGroups) { + nsRadioGroupStruct* radioGroup = entry.GetWeak(); + NS_CYCLE_COLLECTION_NOTE_EDGE_NAME( + cb, "mRadioGroups entry->mSelectedRadioButton"); + cb.NoteXPCOMChild(ToSupports(radioGroup->mSelectedRadioButton)); + + uint32_t i, count = radioGroup->mRadioButtons->Length(); + for (i = 0; i < count; ++i) { + NS_CYCLE_COLLECTION_NOTE_EDGE_NAME( + cb, "mRadioGroups entry->mRadioButtons[i]"); + cb.NoteXPCOMChild(ToSupports(radioGroup->mRadioButtons->ElementAt(i))); + } + } +} + +size_t RadioGroupContainer::SizeOfIncludingThis( + MallocSizeOf aMallocSizeOf) const { + return mRadioGroups.SizeOfIncludingThis(aMallocSizeOf); +} + +nsresult RadioGroupContainer::WalkRadioGroup(const nsAString& aName, + nsIRadioVisitor* aVisitor) { + nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName); + + for (HTMLInputElement* button : radioGroup->mRadioButtons.AsList()) { + if (!aVisitor->Visit(button)) { + return NS_OK; + } + } + + return NS_OK; +} + +void RadioGroupContainer::SetCurrentRadioButton(const nsAString& aName, + HTMLInputElement* aRadio) { + nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName); + radioGroup->mSelectedRadioButton = aRadio; +} + +HTMLInputElement* RadioGroupContainer::GetCurrentRadioButton( + const nsAString& aName) { + return GetOrCreateRadioGroup(aName)->mSelectedRadioButton; +} + +nsresult RadioGroupContainer::GetNextRadioButton( + const nsAString& aName, const bool aPrevious, + HTMLInputElement* aFocusedRadio, HTMLInputElement** aRadioOut) { + *aRadioOut = nullptr; + + nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName); + + // Return the radio button relative to the focused radio button. + // If no radio is focused, get the radio relative to the selected one. + RefPtr currentRadio; + if (aFocusedRadio) { + currentRadio = aFocusedRadio; + } else { + currentRadio = radioGroup->mSelectedRadioButton; + if (!currentRadio) { + return NS_ERROR_FAILURE; + } + } + int32_t index = radioGroup->mRadioButtons->IndexOf(currentRadio); + if (index < 0) { + return NS_ERROR_FAILURE; + } + + int32_t numRadios = static_cast(radioGroup->mRadioButtons->Length()); + RefPtr radio; + do { + if (aPrevious) { + if (--index < 0) { + index = numRadios - 1; + } + } else if (++index >= numRadios) { + index = 0; + } + radio = radioGroup->mRadioButtons->ElementAt(index); + } while (radio->Disabled() && radio != currentRadio); + + radio.forget(aRadioOut); + return NS_OK; +} + +void RadioGroupContainer::AddToRadioGroup(const nsAString& aName, + HTMLInputElement* aRadio, + nsIContent* aAncestor) { + nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName); + radioGroup->mRadioButtons.Insert(*aRadio, aAncestor); + if (aRadio->IsRequired()) { + radioGroup->mRequiredRadioCount++; + } +} + +void RadioGroupContainer::RemoveFromRadioGroup(const nsAString& aName, + HTMLInputElement* aRadio) { + nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName); + MOZ_ASSERT( + radioGroup->mRadioButtons->Contains(aRadio), + "Attempting to remove radio button from group it is not a part of!"); + + radioGroup->mRadioButtons.RemoveElement(*aRadio); + + if (aRadio->IsRequired()) { + MOZ_ASSERT(radioGroup->mRequiredRadioCount != 0, + "mRequiredRadioCount about to wrap below 0!"); + radioGroup->mRequiredRadioCount--; + } +} + +uint32_t RadioGroupContainer::GetRequiredRadioCount( + const nsAString& aName) const { + nsRadioGroupStruct* radioGroup = GetRadioGroup(aName); + return radioGroup ? radioGroup->mRequiredRadioCount : 0; +} + +void RadioGroupContainer::RadioRequiredWillChange(const nsAString& aName, + bool aRequiredAdded) { + nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName); + + if (aRequiredAdded) { + radioGroup->mRequiredRadioCount++; + } else { + MOZ_ASSERT(radioGroup->mRequiredRadioCount != 0, + "mRequiredRadioCount about to wrap below 0!"); + radioGroup->mRequiredRadioCount--; + } +} + +bool RadioGroupContainer::GetValueMissingState(const nsAString& aName) const { + nsRadioGroupStruct* radioGroup = GetRadioGroup(aName); + return radioGroup && radioGroup->mGroupSuffersFromValueMissing; +} + +void RadioGroupContainer::SetValueMissingState(const nsAString& aName, + bool aValue) { + nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName); + radioGroup->mGroupSuffersFromValueMissing = aValue; +} + +nsRadioGroupStruct* RadioGroupContainer::GetRadioGroup( + const nsAString& aName) const { + nsRadioGroupStruct* radioGroup = nullptr; + mRadioGroups.Get(aName, &radioGroup); + return radioGroup; +} + +nsRadioGroupStruct* RadioGroupContainer::GetOrCreateRadioGroup( + const nsAString& aName) { + return mRadioGroups.GetOrInsertNew(aName); +} + +} // namespace mozilla::dom -- cgit v1.2.3