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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      4  *           (C) 2000 Dirk Mueller (mueller (at) 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 
     29 namespace blink {
     30 
     31 class BeforeTextInsertedEvent;
     32 class ExceptionState;
     33 class VisibleSelection;
     34 
     35 class HTMLTextAreaElement FINAL : public HTMLTextFormControlElement {
     36     DEFINE_WRAPPERTYPEINFO();
     37 public:
     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 
     65 private:
     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