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_HTMLBRElement_h 8 #define mozilla_dom_HTMLBRElement_h 9 10 #include "mozilla/Attributes.h" 11 #include "nsGenericHTMLElement.h" 12 #include "nsGkAtoms.h" 13 14 namespace mozilla { 15 namespace dom { 16 17 #define BR_ELEMENT_FLAG_BIT(n_) \ 18 NODE_FLAG_BIT(ELEMENT_TYPE_SPECIFIC_BITS_OFFSET + (n_)) 19 20 // BR element specific bits 21 enum { 22 // NS_PADDING_FOR_EMPTY_EDITOR is set if the <br> element is created by 23 // editor for placing caret at proper position in empty editor. 24 NS_PADDING_FOR_EMPTY_EDITOR = BR_ELEMENT_FLAG_BIT(0), 25 26 // NS_PADDING_FOR_EMPTY_LAST_LINE is set if the <br> element is created by 27 // editor for placing caret at proper position for making empty last line 28 // in a block or <textarea> element visible. 29 NS_PADDING_FOR_EMPTY_LAST_LINE = BR_ELEMENT_FLAG_BIT(1), 30 }; 31 32 ASSERT_NODE_FLAGS_SPACE(ELEMENT_TYPE_SPECIFIC_BITS_OFFSET + 2); 33 34 class HTMLBRElement final : public nsGenericHTMLElement { 35 public: 36 explicit HTMLBRElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo); 37 38 NS_IMPL_FROMNODE_HTML_WITH_TAG(HTMLBRElement, br) 39 40 virtual bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute, 41 const nsAString& aValue, 42 nsIPrincipal* aMaybeScriptedPrincipal, 43 nsAttrValue& aResult) override; 44 NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* aAttribute) const override; 45 virtual nsMapRuleToAttributesFunc GetAttributeMappingFunction() 46 const override; 47 virtual nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override; 48 Clear()49 bool Clear() { return GetBoolAttr(nsGkAtoms::clear); } SetClear(const nsAString & aClear,ErrorResult & aError)50 void SetClear(const nsAString& aClear, ErrorResult& aError) { 51 return SetHTMLAttr(nsGkAtoms::clear, aClear, aError); 52 } GetClear(DOMString & aClear)53 void GetClear(DOMString& aClear) const { 54 return GetHTMLAttr(nsGkAtoms::clear, aClear); 55 } 56 57 virtual JSObject* WrapNode(JSContext* aCx, 58 JS::Handle<JSObject*> aGivenProto) override; 59 IsPaddingForEmptyEditor()60 bool IsPaddingForEmptyEditor() const { 61 return HasFlag(NS_PADDING_FOR_EMPTY_EDITOR); 62 } IsPaddingForEmptyLastLine()63 bool IsPaddingForEmptyLastLine() const { 64 return HasFlag(NS_PADDING_FOR_EMPTY_LAST_LINE); 65 } 66 67 private: 68 virtual ~HTMLBRElement(); 69 70 static void MapAttributesIntoRule(const nsMappedAttributes* aAttributes, 71 MappedDeclarations&); 72 }; 73 74 } // namespace dom 75 } // namespace mozilla 76 77 #endif 78