1/* 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) 3 * (C) 1999 Antti Koivisto (koivisto@kde.org) 4 * (C) 2000 Dirk Mueller (mueller@kde.org) 5 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 * 22 */ 23 24#ifndef FormAssociatedElement_h 25#define FormAssociatedElement_h 26 27#include "FormNamedItem.h" 28#include <wtf/text/WTFString.h> 29 30namespace WebCore { 31 32class ContainerNode; 33class Document; 34class FormAttributeTargetObserver; 35class FormDataList; 36class HTMLElement; 37class HTMLFormElement; 38class Node; 39class ValidityState; 40 41class FormAssociatedElement : public FormNamedItem { 42public: 43 virtual ~FormAssociatedElement(); 44 45 void ref() { refFormAssociatedElement(); } 46 void deref() { derefFormAssociatedElement(); } 47 48 static HTMLFormElement* findAssociatedForm(const HTMLElement*, HTMLFormElement*); 49 HTMLFormElement* form() const { return m_form; } 50 ValidityState* validity(); 51 52 virtual bool isFormControlElement() const = 0; 53 virtual bool isFormControlElementWithState() const; 54 virtual bool isEnumeratable() const = 0; 55 56 // Returns the 'name' attribute value. If this element has no name 57 // attribute, it returns an empty string instead of null string. 58 // Note that the 'name' IDL attribute doesn't use this function. 59 virtual const AtomicString& name() const; 60 61 // Override in derived classes to get the encoded name=value pair for submitting. 62 // Return true for a successful control (see HTML4-17.13.2). 63 virtual bool appendFormData(FormDataList&, bool) { return false; } 64 65 void formWillBeDestroyed(); 66 67 void resetFormOwner(); 68 69 void formRemovedFromTree(const Node* formRoot); 70 71 // ValidityState attribute implementations 72 bool badInput() const { return hasBadInput(); } 73 bool customError() const; 74 75 // Implementations of patternMismatch, rangeOverflow, rangerUnderflow, stepMismatch, tooLong and valueMissing must call willValidate. 76 virtual bool hasBadInput() const; 77 virtual bool patternMismatch() const; 78 virtual bool rangeOverflow() const; 79 virtual bool rangeUnderflow() const; 80 virtual bool stepMismatch() const; 81 virtual bool tooLong() const; 82 virtual bool typeMismatch() const; 83 virtual bool valueMissing() const; 84 virtual String validationMessage() const; 85 bool valid() const; 86 virtual void setCustomValidity(const String&); 87 88 void formAttributeTargetChanged(); 89 90protected: 91 FormAssociatedElement(); 92 93 void insertedInto(ContainerNode&); 94 void removedFrom(ContainerNode&); 95 void didMoveToNewDocument(Document* oldDocument); 96 97 void setForm(HTMLFormElement*); 98 void formAttributeChanged(); 99 100 // If you add an override of willChangeForm() or didChangeForm() to a class 101 // derived from this one, you will need to add a call to setForm(0) to the 102 // destructor of that class. 103 virtual void willChangeForm(); 104 virtual void didChangeForm(); 105 106 String customValidationMessage() const; 107 108private: 109 virtual void refFormAssociatedElement() = 0; 110 virtual void derefFormAssociatedElement() = 0; 111 112 void resetFormAttributeTargetObserver(); 113 114 virtual bool isFormAssociatedElement() const override final { return true; } 115 116 std::unique_ptr<FormAttributeTargetObserver> m_formAttributeTargetObserver; 117 HTMLFormElement* m_form; 118 String m_customValidationMessage; 119}; 120 121#define FORM_ASSOCIATED_ELEMENT_TYPE_CASTS(ToClassName, predicate) \ 122 TYPE_CASTS_BASE(ToClassName, FormAssociatedElement, element, element->predicate, element.predicate) 123 124} // namespace 125 126#endif // FormAssociatedElement_h 127