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, 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 HTMLTextAreaElement_h
25#define HTMLTextAreaElement_h
26
27#include "HTMLTextFormControlElement.h"
28
29namespace WebCore {
30
31class BeforeTextInsertedEvent;
32class VisibleSelection;
33
34class HTMLTextAreaElement FINAL : public HTMLTextFormControlElement {
35public:
36    static PassRefPtr<HTMLTextAreaElement> create(const QualifiedName&, Document*, HTMLFormElement*);
37
38    int cols() const { return m_cols; }
39    int rows() const { return m_rows; }
40
41    bool shouldWrapText() const { return m_wrap != NoWrap; }
42
43    virtual String value() const;
44    void setValue(const String&);
45    String defaultValue() const;
46    void setDefaultValue(const String&);
47    int textLength() const { return value().length(); }
48    virtual int maxLength() const;
49    void setMaxLength(int, ExceptionCode&);
50    // For ValidityState
51    virtual String validationMessage() const OVERRIDE;
52    virtual bool valueMissing() const OVERRIDE;
53    virtual bool tooLong() const OVERRIDE;
54    bool isValidValue(const String&) const;
55
56    virtual HTMLElement* innerTextElement() const;
57
58    void rendererWillBeDestroyed();
59
60    void setCols(int);
61    void setRows(int);
62
63private:
64    HTMLTextAreaElement(const QualifiedName&, Document*, HTMLFormElement*);
65
66    enum WrapMethod { NoWrap, SoftWrap, HardWrap };
67
68    virtual void didAddUserAgentShadowRoot(ShadowRoot*) OVERRIDE;
69    virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; }
70
71    void handleBeforeTextInsertedEvent(BeforeTextInsertedEvent*) const;
72    static String sanitizeUserInputValue(const String&, unsigned maxLength);
73    void updateValue() const;
74    void setNonDirtyValue(const String&);
75    void setValueCommon(const String&);
76
77    virtual bool supportsPlaceholder() const { return true; }
78    virtual HTMLElement* placeholderElement() const;
79    virtual void updatePlaceholderText();
80    virtual bool isEmptyValue() const { return value().isEmpty(); }
81
82    virtual bool isOptionalFormControl() const { return !isRequiredFormControl(); }
83    virtual bool isRequiredFormControl() const { return isRequired(); }
84
85    virtual void defaultEventHandler(Event*);
86
87    virtual void subtreeHasChanged();
88
89    virtual bool isEnumeratable() const { return true; }
90    virtual bool supportLabels() const OVERRIDE { return true; }
91
92    virtual const AtomicString& formControlType() const;
93
94    virtual FormControlState saveFormControlState() const OVERRIDE;
95    virtual void restoreFormControlState(const FormControlState&) OVERRIDE;
96
97    virtual bool isTextFormControl() const { return true; }
98
99    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
100    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
101    virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
102    virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
103    virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
104    virtual bool appendFormData(FormDataList&, bool);
105    virtual void reset();
106    virtual bool hasCustomFocusLogic() const OVERRIDE;
107    virtual bool isMouseFocusable() const OVERRIDE;
108    virtual bool isKeyboardFocusable(KeyboardEvent*) const OVERRIDE;
109    virtual void updateFocusAppearance(bool restorePreviousSelection);
110
111    virtual void accessKeyAction(bool sendMouseEvents);
112
113    virtual bool shouldUseInputMethod() OVERRIDE;
114    virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
115    virtual bool matchesReadOnlyPseudoClass() const OVERRIDE;
116    virtual bool matchesReadWritePseudoClass() const OVERRIDE;
117
118    bool valueMissing(const String& value) const { return isRequiredFormControl() && !isDisabledOrReadOnly() && value.isEmpty(); }
119    bool tooLong(const String&, NeedsToCheckDirtyFlag) const;
120
121    int m_rows;
122    int m_cols;
123    WrapMethod m_wrap;
124    HTMLElement* m_placeholder;
125    mutable String m_value;
126    mutable bool m_isDirty;
127    mutable bool m_wasModifiedByUser;
128};
129
130inline bool isHTMLTextAreaElement(Node* node)
131{
132    return node->hasTagName(HTMLNames::textareaTag);
133}
134
135} //namespace
136
137#endif
138