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 "core/html/HTMLTextFormControlElement.h"
28
29namespace blink {
30
31class BeforeTextInsertedEvent;
32class ExceptionState;
33class VisibleSelection;
34
35class HTMLTextAreaElement FINAL : public HTMLTextFormControlElement {
36    DEFINE_WRAPPERTYPEINFO();
37public:
38    static PassRefPtrWillBeRawPtr<HTMLTextAreaElement> create(Document&, HTMLFormElement*);
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 String value() const OVERRIDE;
46    void setValue(const String&, TextFieldEventBehavior = DispatchNoEvent);
47    String defaultValue() const;
48    void setDefaultValue(const String&);
49    int textLength() const { return value().length(); }
50    int maxLength() const;
51    void setMaxLength(int, ExceptionState&);
52
53    String suggestedValue() const;
54    void setSuggestedValue(const String&);
55
56    // For ValidityState
57    virtual String validationMessage() const OVERRIDE;
58    virtual bool valueMissing() const OVERRIDE;
59    virtual bool tooLong() const OVERRIDE;
60    bool isValidValue(const String&) const;
61
62    void setCols(int);
63    void setRows(int);
64
65private:
66    HTMLTextAreaElement(Document&, HTMLFormElement*);
67
68    enum WrapMethod { NoWrap, SoftWrap, HardWrap };
69    enum SetValueCommonOption {
70        NotSetSelection,
71        SetSeletion
72    };
73
74    virtual void didAddUserAgentShadowRoot(ShadowRoot&) OVERRIDE;
75    // FIXME: Author shadows should be allowed
76    // https://bugs.webkit.org/show_bug.cgi?id=92608
77    virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; }
78
79    void handleBeforeTextInsertedEvent(BeforeTextInsertedEvent*) const;
80    static String sanitizeUserInputValue(const String&, unsigned maxLength);
81    void updateValue() const;
82    virtual void setInnerEditorValue(const String&) OVERRIDE;
83    void setNonDirtyValue(const String&);
84    void setValueCommon(const String&, TextFieldEventBehavior, SetValueCommonOption = NotSetSelection);
85
86    virtual bool supportsPlaceholder() const OVERRIDE { return true; }
87    virtual void updatePlaceholderText() OVERRIDE;
88    virtual bool isEmptyValue() const OVERRIDE { return value().isEmpty(); }
89    virtual bool isEmptySuggestedValue() const OVERRIDE FINAL { return suggestedValue().isEmpty(); }
90
91    virtual bool isOptionalFormControl() const OVERRIDE { return !isRequiredFormControl(); }
92    virtual bool isRequiredFormControl() const OVERRIDE { return isRequired(); }
93
94    virtual void defaultEventHandler(Event*) OVERRIDE;
95    virtual void handleFocusEvent(Element* oldFocusedNode, FocusType) OVERRIDE;
96
97    virtual void subtreeHasChanged() OVERRIDE;
98
99    virtual bool isEnumeratable() const OVERRIDE { return true; }
100    virtual bool isInteractiveContent() const OVERRIDE;
101    virtual bool supportsAutofocus() const OVERRIDE;
102    virtual bool supportLabels() const OVERRIDE { return true; }
103
104    virtual const AtomicString& formControlType() const OVERRIDE;
105
106    virtual FormControlState saveFormControlState() const OVERRIDE;
107    virtual void restoreFormControlState(const FormControlState&) OVERRIDE;
108
109    virtual bool isTextFormControl() const OVERRIDE { return true; }
110
111    virtual void childrenChanged(const ChildrenChange&) OVERRIDE;
112    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
113    virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
114    virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
115    virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
116    virtual bool appendFormData(FormDataList&, bool) OVERRIDE;
117    virtual void resetImpl() OVERRIDE;
118    virtual bool hasCustomFocusLogic() const OVERRIDE;
119    virtual bool shouldShowFocusRingOnMouseFocus() const OVERRIDE;
120    virtual bool isKeyboardFocusable() const OVERRIDE;
121    virtual void updateFocusAppearance(bool restorePreviousSelection) OVERRIDE;
122
123    virtual void accessKeyAction(bool sendMouseEvents) OVERRIDE;
124
125    virtual bool matchesReadOnlyPseudoClass() const OVERRIDE;
126    virtual bool matchesReadWritePseudoClass() const OVERRIDE;
127
128    // If the String* argument is 0, apply this->value().
129    bool valueMissing(const String*) const;
130    bool tooLong(const String*, NeedsToCheckDirtyFlag) const;
131
132    int m_rows;
133    int m_cols;
134    WrapMethod m_wrap;
135    mutable String m_value;
136    mutable bool m_isDirty;
137    bool m_valueIsUpToDate;
138    String m_suggestedValue;
139};
140
141} // namespace blink
142
143#endif // HTMLTextAreaElement_h
144