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The Tor Browser
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RadioGroupContainer.h (2513B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef mozilla_dom_nsRadioGroupStruct_h
      8 #define mozilla_dom_nsRadioGroupStruct_h
      9 
     10 #include "nsClassHashtable.h"
     11 
     12 class nsIContent;
     13 
     14 namespace mozilla::dom {
     15 
     16 class HTMLInputElement;
     17 struct nsRadioGroupStruct;
     18 
     19 class RadioGroupContainer final {
     20 public:
     21  RadioGroupContainer();
     22  ~RadioGroupContainer();
     23 
     24  static void Traverse(RadioGroupContainer* tmp,
     25                       nsCycleCollectionTraversalCallback& cb);
     26  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const;
     27 
     28  template <typename VisitCallback>
     29  void WalkRadioGroup(const nsAString& aName, VisitCallback&& aCallback,
     30                      const HTMLInputElement* aExcludedElement) {
     31    nsRadioGroupStruct* radioGroup = GetOrCreateRadioGroup(aName);
     32    for (HTMLInputElement* button : GetButtonsInGroup(radioGroup)) {
     33      if (button != aExcludedElement && !aCallback(button)) {
     34        return;
     35      }
     36    }
     37  }
     38 
     39  void SetCurrentRadioButton(const nsAString& aName, HTMLInputElement* aRadio);
     40  HTMLInputElement* GetCurrentRadioButton(const nsAString& aName);
     41  nsresult GetNextRadioButton(const nsAString& aName, const bool aPrevious,
     42                              HTMLInputElement* aFocusedRadio,
     43                              HTMLInputElement** aRadioOut);
     44  HTMLInputElement* GetFirstRadioButton(const nsAString& aName);
     45  void AddToRadioGroup(const nsAString& aName, HTMLInputElement* aRadio,
     46                       nsIContent* aAncestor);
     47  void RemoveFromRadioGroup(const nsAString& aName, HTMLInputElement* aRadio);
     48  uint32_t GetRequiredRadioCount(const nsAString& aName) const;
     49  void RadioRequiredWillChange(const nsAString& aName, bool aRequiredAdded);
     50  bool GetValueMissingState(const nsAString& aName) const;
     51  void SetValueMissingState(const nsAString& aName, bool aValue);
     52 
     53  // for radio group
     54  nsRadioGroupStruct* GetRadioGroup(const nsAString& aName) const;
     55  nsRadioGroupStruct* GetOrCreateRadioGroup(const nsAString& aName);
     56 
     57 private:
     58  Span<const RefPtr<HTMLInputElement>> GetButtonsInGroup(
     59      nsRadioGroupStruct* aGroup) const;
     60 
     61  nsClassHashtable<nsStringHashKey, nsRadioGroupStruct> mRadioGroups;
     62 };
     63 
     64 }  // namespace mozilla::dom
     65 
     66 #endif  // mozilla_dom_nsRadioGroupStruct_h