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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) 2004-2017 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.
*
*/
#pragma once
#include "HTMLFormControlElementWithState.h"
namespace WebCore {
class Position;
class RenderTextControl;
class TextControlInnerTextElement;
class VisiblePosition;
enum class AutoFillButtonType : uint8_t { None, Credentials, Contacts };
enum TextFieldSelectionDirection { SelectionHasNoDirection, SelectionHasForwardDirection, SelectionHasBackwardDirection };
enum TextFieldEventBehavior { DispatchNoEvent, DispatchChangeEvent, DispatchInputAndChangeEvent };
class HTMLTextFormControlElement : public HTMLFormControlElementWithState {
public:
// Common flag for HTMLInputElement::tooLong() / tooShort() and HTMLTextAreaElement::tooLong() / tooShort().
enum NeedsToCheckDirtyFlag {CheckDirtyFlag, IgnoreDirtyFlag};
virtual ~HTMLTextFormControlElement();
void didEditInnerTextValue();
void forwardEvent(Event&);
int maxLength() const { return m_maxLength; }
WEBCORE_EXPORT ExceptionOr<void> setMaxLength(int);
int minLength() const { return m_minLength; }
ExceptionOr<void> setMinLength(int);
InsertionNotificationRequest insertedInto(ContainerNode&) override;
// The derived class should return true if placeholder processing is needed.
bool isPlaceholderVisible() const { return m_isPlaceholderVisible; }
virtual bool supportsPlaceholder() const = 0;
String strippedPlaceholder() const;
virtual HTMLElement* placeholderElement() const = 0;
void updatePlaceholderVisibility();
int indexForVisiblePosition(const VisiblePosition&) const;
WEBCORE_EXPORT VisiblePosition visiblePositionForIndex(int index) const;
WEBCORE_EXPORT int selectionStart() const;
WEBCORE_EXPORT int selectionEnd() const;
WEBCORE_EXPORT const AtomicString& selectionDirection() const;
WEBCORE_EXPORT void setSelectionStart(int);
WEBCORE_EXPORT void setSelectionEnd(int);
WEBCORE_EXPORT void setSelectionDirection(const String&);
WEBCORE_EXPORT void select(const AXTextStateChangeIntent& = AXTextStateChangeIntent());
WEBCORE_EXPORT virtual ExceptionOr<void> setRangeText(const String& replacement);
WEBCORE_EXPORT virtual ExceptionOr<void> setRangeText(const String& replacement, unsigned start, unsigned end, const String& selectionMode);
void setSelectionRange(int start, int end, const String& direction, const AXTextStateChangeIntent& = AXTextStateChangeIntent());
WEBCORE_EXPORT void setSelectionRange(int start, int end, TextFieldSelectionDirection = SelectionHasNoDirection, const AXTextStateChangeIntent& = AXTextStateChangeIntent());
RefPtr<Range> selection() const;
String selectedText() const;
void dispatchFormControlChangeEvent() final;
virtual String value() const = 0;
virtual TextControlInnerTextElement* innerTextElement() const = 0;
virtual RenderStyle createInnerTextStyle(const RenderStyle&) const = 0;
void selectionChanged(bool shouldFireSelectEvent);
WEBCORE_EXPORT bool lastChangeWasUserEdit() const;
void setInnerTextValue(const String&);
String innerTextValue() const;
String directionForFormData() const;
void setTextAsOfLastFormControlChangeEvent(const String& text) { m_textAsOfLastFormControlChangeEvent = text; }
#if PLATFORM(IOS)
WEBCORE_EXPORT void hidePlaceholder();
WEBCORE_EXPORT void showPlaceholderIfNecessary();
#endif
protected:
HTMLTextFormControlElement(const QualifiedName&, Document&, HTMLFormElement*);
bool isPlaceholderEmpty() const;
virtual void updatePlaceholderText() = 0;
void parseAttribute(const QualifiedName&, const AtomicString&) override;
void disabledStateChanged() override;
void readOnlyAttributeChanged() override;
void updateInnerTextElementEditability();
void cacheSelection(int start, int end, TextFieldSelectionDirection direction)
{
m_cachedSelectionStart = start;
m_cachedSelectionEnd = end;
m_cachedSelectionDirection = direction;
}
void restoreCachedSelection(const AXTextStateChangeIntent& = AXTextStateChangeIntent());
bool hasCachedSelection() const { return m_cachedSelectionStart >= 0; }
virtual void subtreeHasChanged() = 0;
void setLastChangeWasNotUserEdit() { m_lastChangeWasUserEdit = false; }
String valueWithHardLineBreaks() const;
void adjustInnerTextStyle(const RenderStyle& parentStyle, RenderStyle& textBlockStyle) const;
void internalSetMaxLength(int maxLength) { m_maxLength = maxLength; }
void internalSetMinLength(int minLength) { m_minLength = minLength; }
private:
TextFieldSelectionDirection cachedSelectionDirection() const { return static_cast<TextFieldSelectionDirection>(m_cachedSelectionDirection); }
int computeSelectionStart() const;
int computeSelectionEnd() const;
TextFieldSelectionDirection computeSelectionDirection() const;
void dispatchFocusEvent(RefPtr<Element>&& oldFocusedElement, FocusDirection) final;
void dispatchBlurEvent(RefPtr<Element>&& newFocusedElement) final;
bool childShouldCreateRenderer(const Node&) const override;
unsigned indexForPosition(const Position&) const;
// Returns true if user-editable value is empty. Used to check placeholder visibility.
virtual bool isEmptyValue() const = 0;
// 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() { }
bool placeholderShouldBeVisible() const;
unsigned m_cachedSelectionDirection : 2;
unsigned m_lastChangeWasUserEdit : 1;
unsigned m_isPlaceholderVisible : 1;
String m_textAsOfLastFormControlChangeEvent;
int m_cachedSelectionStart;
int m_cachedSelectionEnd;
int m_maxLength { -1 };
int m_minLength { -1 };
};
HTMLTextFormControlElement* enclosingTextFormControl(const Position&);
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::HTMLTextFormControlElement)
static bool isType(const WebCore::Element& element) { return element.isTextFormControl(); }
static bool isType(const WebCore::Node& node) { return is<WebCore::Element>(node) && isType(downcast<WebCore::Element>(node)); }
SPECIALIZE_TYPE_TRAITS_END()
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