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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2009, 2010, 2011 Google Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef HTMLTextFormControlElement_h
#define HTMLTextFormControlElement_h
#include "HTMLFormControlElementWithState.h"
namespace WebCore {
class Position;
class RenderTextControl;
class VisiblePosition;
enum TextFieldSelectionDirection { SelectionHasNoDirection, SelectionHasForwardDirection, SelectionHasBackwardDirection };
enum TextFieldEventBehavior { DispatchNoEvent, DispatchChangeEvent, DispatchInputAndChangeEvent };
class HTMLTextFormControlElement : public HTMLFormControlElementWithState {
public:
// Common flag for HTMLInputElement::tooLong() and HTMLTextAreaElement::tooLong().
enum NeedsToCheckDirtyFlag {CheckDirtyFlag, IgnoreDirtyFlag};
virtual ~HTMLTextFormControlElement();
void forwardEvent(Event*);
virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
// The derived class should return true if placeholder processing is needed.
virtual bool supportsPlaceholder() const = 0;
String strippedPlaceholder() const;
bool placeholderShouldBeVisible() const;
virtual HTMLElement* placeholderElement() const = 0;
void updatePlaceholderVisibility(bool);
static void fixPlaceholderRenderer(HTMLElement* placeholder, HTMLElement* siblingElement);
int indexForVisiblePosition(const VisiblePosition&) const;
int selectionStart() const;
int selectionEnd() const;
const AtomicString& selectionDirection() const;
void setSelectionStart(int);
void setSelectionEnd(int);
void setSelectionDirection(const String&);
void select();
virtual void setRangeText(const String& replacement, ExceptionCode&);
virtual void setRangeText(const String& replacement, unsigned start, unsigned end, const String& selectionMode, ExceptionCode&);
void setSelectionRange(int start, int end, const String& direction);
void setSelectionRange(int start, int end, TextFieldSelectionDirection = SelectionHasNoDirection);
PassRefPtr<Range> selection() const;
String selectedText() const;
virtual void dispatchFormControlChangeEvent() OVERRIDE FINAL;
virtual int maxLength() const = 0;
virtual String value() const = 0;
virtual HTMLElement* innerTextElement() const = 0;
void selectionChanged(bool userTriggered);
bool lastChangeWasUserEdit() const;
void setInnerTextValue(const String&);
String innerTextValue() const;
String directionForFormData() const;
void setTextAsOfLastFormControlChangeEvent(const String& text) { m_textAsOfLastFormControlChangeEvent = text; }
protected:
HTMLTextFormControlElement(const QualifiedName&, Document*, HTMLFormElement*);
bool isPlaceholderEmpty() const;
virtual void updatePlaceholderText() = 0;
virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
void cacheSelection(int start, int end, TextFieldSelectionDirection direction)
{
m_cachedSelectionStart = start;
m_cachedSelectionEnd = end;
m_cachedSelectionDirection = direction;
}
void restoreCachedSelection();
bool hasCachedSelection() const { return m_cachedSelectionStart >= 0; }
virtual void defaultEventHandler(Event*);
virtual void subtreeHasChanged() = 0;
void setLastChangeWasNotUserEdit() { m_lastChangeWasUserEdit = false; }
String valueWithHardLineBreaks() const;
private:
int computeSelectionStart() const;
int computeSelectionEnd() const;
TextFieldSelectionDirection computeSelectionDirection() const;
virtual void dispatchFocusEvent(PassRefPtr<Element> oldFocusedElement, FocusDirection) OVERRIDE FINAL;
virtual void dispatchBlurEvent(PassRefPtr<Element> newFocusedElement) OVERRIDE FINAL;
virtual bool childShouldCreateRenderer(const NodeRenderingContext&) const OVERRIDE;
// Returns true if user-editable value is empty. Used to check placeholder visibility.
virtual bool isEmptyValue() const = 0;
// Returns true if suggested value is empty. Used to check placeholder visibility.
virtual bool isEmptySuggestedValue() const { return true; }
// Called in dispatchFocusEvent(), after placeholder process, before calling parent's dispatchFocusEvent().
virtual void handleFocusEvent(Node* /* oldFocusedNode */, FocusDirection) { }
// Called in dispatchBlurEvent(), after placeholder process, before calling parent's dispatchBlurEvent().
virtual void handleBlurEvent() { }
RenderTextControl* textRendererAfterUpdateLayout();
String m_textAsOfLastFormControlChangeEvent;
bool m_lastChangeWasUserEdit;
int m_cachedSelectionStart;
int m_cachedSelectionEnd;
TextFieldSelectionDirection m_cachedSelectionDirection;
};
inline bool isHTMLTextFormControlElement(const Node* node)
{
return node->isElementNode() && toElement(node)->isTextFormControl();
}
inline HTMLTextFormControlElement* toHTMLTextFormControlElement(Node* node)
{
ASSERT_WITH_SECURITY_IMPLICATION(!node || isHTMLTextFormControlElement(node));
return static_cast<HTMLTextFormControlElement*>(node);
}
HTMLTextFormControlElement* enclosingTextFormControl(const Position&);
} // namespace
#endif
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