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/*
* Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
* (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
*
* 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 RenderTextControl_h
#define RenderTextControl_h
#include "RenderBlock.h"
namespace WebCore {
class VisibleSelection;
class TextControlInnerElement;
class TextControlInnerTextElement;
class RenderTextControl : public RenderBlock {
public:
virtual ~RenderTextControl();
HTMLElement* innerTextElement() const;
bool lastChangeWasUserEdit() const { return m_lastChangeWasUserEdit; }
void setLastChangeWasUserEdit(bool lastChangeWasUserEdit);
int selectionStart() const;
int selectionEnd() const;
PassRefPtr<Range> selection(int start, int end) const;
virtual void subtreeHasChanged();
String text();
String textWithHardLineBreaks();
void selectionChanged(bool userTriggered);
VisiblePosition visiblePositionForIndex(int index) const;
int indexForVisiblePosition(const VisiblePosition&) const;
void updatePlaceholderVisibility(bool, bool);
protected:
RenderTextControl(Node*, bool);
int scrollbarThickness() const;
void adjustInnerTextStyle(const RenderStyle* startStyle, RenderStyle* textBlockStyle) const;
void setInnerTextValue(const String&);
virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
void createSubtreeIfNeeded(TextControlInnerElement* innerBlock);
void hitInnerTextElement(HitTestResult&, int x, int y, int tx, int ty);
void forwardEvent(Event*);
int textBlockWidth() const;
int textBlockHeight() const;
float scaleEmToUnits(int x) const;
static bool hasValidAvgCharWidth(AtomicString family);
virtual float getAvgCharWidth(AtomicString family);
virtual int preferredContentWidth(float charWidth) const = 0;
virtual void adjustControlHeightBasedOnLineHeight(int lineHeight) = 0;
virtual void cacheSelection(int start, int end) = 0;
virtual PassRefPtr<RenderStyle> createInnerTextStyle(const RenderStyle* startStyle) const = 0;
virtual RenderStyle* textBaseStyle() const = 0;
virtual void updateFromElement();
virtual void computeLogicalHeight();
bool m_placeholderVisible;
private:
virtual const char* renderName() const { return "RenderTextControl"; }
virtual bool isTextControl() const { return true; }
virtual void computePreferredLogicalWidths();
virtual void removeLeftoverAnonymousBlock(RenderBlock*) { }
virtual bool canHaveChildren() const { return false; }
virtual bool avoidsFloats() const { return true; }
void setInnerTextStyle(PassRefPtr<RenderStyle>);
virtual void paintObject(PaintInfo&, int tx, int ty);
virtual void addFocusRingRects(Vector<IntRect>&, int tx, int ty);
virtual bool canBeProgramaticallyScrolled(bool) const { return true; }
virtual bool requiresForcedStyleRecalcPropagation() const { return true; }
String finishText(Vector<UChar>&) const;
bool hasVisibleTextArea() const;
friend void setSelectionRange(Node*, int start, int end);
bool isSelectableElement(Node*) const;
virtual int textBlockInsetLeft() const = 0;
virtual int textBlockInsetRight() const = 0;
virtual int textBlockInsetTop() const = 0;
void paintPlaceholder(PaintInfo&, int tx, int ty);
bool m_lastChangeWasUserEdit;
RefPtr<TextControlInnerTextElement> m_innerText;
};
void setSelectionRange(Node*, int start, int end);
inline RenderTextControl* toRenderTextControl(RenderObject* object)
{
ASSERT(!object || object->isTextControl());
return static_cast<RenderTextControl*>(object);
}
inline const RenderTextControl* toRenderTextControl(const RenderObject* object)
{
ASSERT(!object || object->isTextControl());
return static_cast<const RenderTextControl*>(object);
}
// This will catch anyone doing an unnecessary cast.
void toRenderTextControl(const RenderTextControl*);
} // namespace WebCore
#endif // RenderTextControl_h
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