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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 "RenderBlockFlow.h"
#include "RenderFlexibleBox.h"
namespace WebCore {
class TextControlInnerTextElement;
class HTMLTextFormControlElement;
class RenderTextControl : public RenderBlockFlow {
public:
virtual ~RenderTextControl();
WEBCORE_EXPORT HTMLTextFormControlElement& textFormControlElement() const;
virtual Ref<RenderStyle> createInnerTextStyle(const RenderStyle* startStyle) const = 0;
#if PLATFORM(IOS)
bool canScroll() const;
// Returns the line height of the inner renderer.
virtual int innerLineHeight() const override;
#endif
protected:
RenderTextControl(HTMLTextFormControlElement&, Ref<RenderStyle>&&);
// This convenience function should not be made public because innerTextElement may outlive the render tree.
TextControlInnerTextElement* innerTextElement() const;
int scrollbarThickness() const;
void adjustInnerTextStyle(const RenderStyle* startStyle, RenderStyle& textBlockStyle) const;
virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
void hitInnerTextElement(HitTestResult&, const LayoutPoint& pointInContainer, const LayoutPoint& accumulatedOffset);
int textBlockLogicalWidth() const;
int textBlockLogicalHeight() const;
float scaleEmToUnits(int x) const;
virtual float getAverageCharWidth();
virtual LayoutUnit preferredContentLogicalWidth(float charWidth) const = 0;
virtual LayoutUnit computeControlLogicalHeight(LayoutUnit lineHeight, LayoutUnit nonContentHeight) const = 0;
virtual void computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop, LogicalExtentComputedValues&) const override;
virtual RenderObject* layoutSpecialExcludedChild(bool relayoutChildren) override;
private:
void element() const = delete;
virtual const char* renderName() const override { return "RenderTextControl"; }
virtual bool isTextControl() const override final { return true; }
virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const override;
virtual void computePreferredLogicalWidths() override;
virtual void removeLeftoverAnonymousBlock(RenderBlock*) override { }
virtual bool avoidsFloats() const override { return true; }
virtual bool canHaveGeneratedChildren() const override { return false; }
virtual void addFocusRingRects(Vector<LayoutRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer = 0) override;
virtual bool canBeProgramaticallyScrolled() const override { return true; }
virtual bool requiresForcedStyleRecalcPropagation() const override { return true; }
};
// Renderer for our inner container, for <search> and others.
// We can't use RenderFlexibleBox directly, because flexboxes have a different
// baseline definition, and then inputs of different types wouldn't line up
// anymore.
class RenderTextControlInnerContainer final : public RenderFlexibleBox {
public:
explicit RenderTextControlInnerContainer(Element& element, Ref<RenderStyle>&& style)
: RenderFlexibleBox(element, WTFMove(style))
{ }
virtual ~RenderTextControlInnerContainer() { }
virtual int baselinePosition(FontBaseline baseline, bool firstLine, LineDirectionMode direction, LinePositionMode position) const override
{
return RenderBlock::baselinePosition(baseline, firstLine, direction, position);
}
virtual Optional<int> firstLineBaseline() const override { return RenderBlock::firstLineBaseline(); }
virtual Optional<int> inlineBlockBaseline(LineDirectionMode direction) const override { return RenderBlock::inlineBlockBaseline(direction); }
private:
bool isFlexibleBoxImpl() const override { return true; }
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderTextControl, isTextControl())
#endif // RenderTextControl_h
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