dom/html/HTMLLabelElement.h

   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 /**
   8  * Declaration of HTML <label> elements.
   9  */
  10 #ifndef HTMLLabelElement_h
  11 #define HTMLLabelElement_h
  12
  13 #include "mozilla/Attributes.h"
  14 #include "nsGenericHTMLElement.h"
  15
  16 namespace mozilla {
  17 class EventChainPostVisitor;
  18 namespace dom {
  19
  20 class HTMLLabelElement final : public nsGenericHTMLElement {
  21  public:
  22   explicit HTMLLabelElement(
  23       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
  24       : nsGenericHTMLElement(std::move(aNodeInfo)), mHandlingEvent(false) {}
  25
  26   NS_IMPL_FROMNODE_HTML_WITH_TAG(HTMLLabelElement, label)
  27
  28   // nsISupports
  29   NS_INLINE_DECL_REFCOUNTING_INHERITED(HTMLLabelElement, nsGenericHTMLElement)
  30
  31   // Element
  32   virtual bool IsInteractiveHTMLContent() const override { return true; }
  33
  34   HTMLFormElement* GetForm() const;
  35   void GetHtmlFor(nsString& aHtmlFor) {
  36     GetHTMLAttr(nsGkAtoms::_for, aHtmlFor);
  37   }
  38   void SetHtmlFor(const nsAString& aHtmlFor) {
  39     SetHTMLAttr(nsGkAtoms::_for, aHtmlFor);
  40   }
  41   nsGenericHTMLElement* GetControl() const { return GetLabeledElement(); }
  42
  43   using nsGenericHTMLElement::Focus;
  44   virtual void Focus(const FocusOptions& aOptions,
  45                      const mozilla::dom::CallerType aCallerType,
  46                      ErrorResult& aError) override;
  47
  48   // nsIContent
  49   MOZ_CAN_RUN_SCRIPT_BOUNDARY
  50   virtual nsresult PostHandleEvent(EventChainPostVisitor& aVisitor) override;
  51   MOZ_CAN_RUN_SCRIPT
  52   virtual Result<bool, nsresult> PerformAccesskey(
  53       bool aKeyCausesActivation, bool aIsTrustedEvent) override;
  54   virtual nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
  55
  56   nsGenericHTMLElement* GetLabeledElement() const;
  57
  58  protected:
  59   virtual ~HTMLLabelElement();
  60
  61   virtual JSObject* WrapNode(JSContext* aCx,
  62                              JS::Handle<JSObject*> aGivenProto) override;
  63
  64   nsGenericHTMLElement* GetFirstLabelableDescendant() const;
  65
  66   // XXX It would be nice if we could use an event flag instead.
  67   bool mHandlingEvent;
  68 };
  69
  70 }  // namespace dom
  71 }  // namespace mozilla
  72
  73 #endif /* HTMLLabelElement_h */