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 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 HTMLTextAreaElement_h
25#define HTMLTextAreaElement_h
26
27#include "HTMLFormControlElement.h"
28
29namespace WebCore {
30
31class BeforeTextInsertedEvent;
32class VisibleSelection;
33
34class HTMLTextAreaElement : public HTMLTextFormControlElement {
35public:
36    HTMLTextAreaElement(const QualifiedName&, Document*, HTMLFormElement* = 0);
37
38    virtual bool checkDTD(const Node* newChild) { return newChild->isTextNode(); }
39
40    int cols() const { return m_cols; }
41    int rows() const { return m_rows; }
42
43    bool shouldWrapText() const { return m_wrap != NoWrap; }
44
45    virtual bool isEnumeratable() const { return true; }
46
47    virtual const AtomicString& formControlType() const;
48
49    virtual bool saveFormControlState(String& value) const;
50    virtual void restoreFormControlState(const String&);
51
52    bool readOnly() const { return isReadOnlyFormControl(); }
53
54    virtual bool isTextFormControl() const { return true; }
55
56    virtual bool valueMissing() const { return isRequiredFormControl() && !disabled() && !readOnly() && value().isEmpty(); }
57
58    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
59    virtual void parseMappedAttribute(MappedAttribute*);
60    virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
61    virtual bool appendFormData(FormDataList&, bool);
62    virtual void reset();
63    virtual void defaultEventHandler(Event*);
64    virtual bool isMouseFocusable() const;
65    virtual bool isKeyboardFocusable(KeyboardEvent*) const;
66    virtual void updateFocusAppearance(bool restorePreviousSelection);
67
68    String value() const;
69    void setValue(const String&);
70    String defaultValue() const;
71    void setDefaultValue(const String&);
72    int textLength() const { return value().length(); }
73    int maxLength() const;
74    void setMaxLength(int, ExceptionCode&);
75    virtual bool tooLong() const;
76
77    void rendererWillBeDestroyed();
78
79    virtual void accessKeyAction(bool sendToAnyElement);
80
81    const AtomicString& accessKey() const;
82    void setAccessKey(const String&);
83
84    void setCols(int);
85    void setRows(int);
86
87    void cacheSelection(int s, int e) { m_cachedSelectionStart = s; m_cachedSelectionEnd = e; };
88
89    virtual bool shouldUseInputMethod() const;
90
91private:
92    enum WrapMethod { NoWrap, SoftWrap, HardWrap };
93
94    void handleBeforeTextInsertedEvent(BeforeTextInsertedEvent*) const;
95    static String sanitizeUserInputValue(const String&, unsigned maxLength);
96    void updateValue() const;
97    void setNonDirtyValue(const String&);
98
99    virtual bool supportsPlaceholder() const { return true; }
100    virtual bool isEmptyValue() const { return value().isEmpty(); }
101    virtual int cachedSelectionStart() const { return m_cachedSelectionStart; }
102    virtual int cachedSelectionEnd() const { return m_cachedSelectionEnd; }
103
104    virtual bool isOptionalFormControl() const { return !isRequiredFormControl(); }
105    virtual bool isRequiredFormControl() const { return required(); }
106
107    int m_rows;
108    int m_cols;
109    WrapMethod m_wrap;
110    mutable String m_value;
111    int m_cachedSelectionStart;
112    int m_cachedSelectionEnd;
113    mutable bool m_isDirty;
114};
115
116} //namespace
117
118#endif
119