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.
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.
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.
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.
24 #ifndef FormAssociatedElement_h
25 #define FormAssociatedElement_h
27 #include "wtf/WeakPtr.h"
28 #include "wtf/text/WTFString.h"
34 class FormAttributeTargetObserver;
37 class HTMLFormElement;
39 class ValidationMessage;
41 class VisibleSelection;
43 class FormAssociatedElement {
45 virtual ~FormAssociatedElement();
47 void ref() { refFormAssociatedElement(); }
48 void deref() { derefFormAssociatedElement(); }
50 static HTMLFormElement* findAssociatedForm(const HTMLElement*);
51 HTMLFormElement* form() const { return m_form.get(); }
52 ValidityState* validity();
54 virtual bool isFormControlElement() const = 0;
55 virtual bool isFormControlElementWithState() const;
56 virtual bool isEnumeratable() const = 0;
58 // Returns the 'name' attribute value. If this element has no name
59 // attribute, it returns an empty string instead of null string.
60 // Note that the 'name' IDL attribute doesn't use this function.
61 virtual const AtomicString& name() const;
63 // Override in derived classes to get the encoded name=value pair for submitting.
64 // Return true for a successful control (see HTML4-17.13.2).
65 virtual bool appendFormData(FormDataList&, bool) { return false; }
67 void resetFormOwner();
69 void formRemovedFromTree(const Node* formRoot);
71 // ValidityState attribute implementations
72 bool customError() const;
74 // Override functions for patterMismatch, rangeOverflow, rangerUnderflow,
75 // stepMismatch, tooLong and valueMissing must call willValidate method.
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;
86 virtual void setCustomValidity(const String&);
88 void formAttributeTargetChanged();
91 FormAssociatedElement();
93 void insertedInto(ContainerNode*);
94 void removedFrom(ContainerNode*);
95 void didMoveToNewDocument(Document& oldDocument);
97 // FIXME: Remove usage of setForm. resetFormOwner should be enough, and
98 // setForm is confusing.
99 void setForm(HTMLFormElement*);
100 void associateByParser(HTMLFormElement*);
101 void formAttributeChanged();
103 // If you add an override of willChangeForm() or didChangeForm() to a class
104 // derived from this one, you will need to add a call to setForm(0) to the
105 // destructor of that class.
106 virtual void willChangeForm();
107 virtual void didChangeForm();
109 String customValidationMessage() const;
112 virtual void refFormAssociatedElement() = 0;
113 virtual void derefFormAssociatedElement() = 0;
115 void resetFormAttributeTargetObserver();
117 OwnPtr<FormAttributeTargetObserver> m_formAttributeTargetObserver;
118 // m_form should be a strong reference in Oilpan.
119 WeakPtr<HTMLFormElement> m_form;
120 OwnPtr<ValidityState> m_validityState;
121 String m_customValidationMessage;
122 bool m_formWasSetByParser;
125 HTMLElement* toHTMLElement(FormAssociatedElement*);
126 HTMLElement& toHTMLElement(FormAssociatedElement&);
127 const HTMLElement* toHTMLElement(const FormAssociatedElement*);
128 const HTMLElement& toHTMLElement(const FormAssociatedElement&);
132 #endif // FormAssociatedElement_h