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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 "core/rendering/RenderBlockFlow.h"
#include "core/rendering/RenderFlexibleBox.h"
namespace blink {
class HTMLTextFormControlElement;
class RenderTextControl : public RenderBlockFlow {
public:
virtual ~RenderTextControl();
HTMLTextFormControlElement* textFormControlElement() const;
virtual PassRefPtr<RenderStyle> createInnerEditorStyle(const RenderStyle* startStyle) const = 0;
protected:
RenderTextControl(HTMLTextFormControlElement*);
// This convenience function should not be made public because
// innerEditorElement may outlive the render tree.
HTMLElement* innerEditorElement() const;
int scrollbarThickness() const;
void adjustInnerEditorStyle(RenderStyle* textBlockStyle) const;
virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
void hitInnerEditorElement(HitTestResult&, const LayoutPoint& pointInContainer, const LayoutPoint& accumulatedOffset);
int textBlockLogicalWidth() const;
int textBlockLogicalHeight() const;
float scaleEmToUnits(int x) const;
static bool hasValidAvgCharWidth(AtomicString family);
virtual float getAvgCharWidth(AtomicString family);
virtual LayoutUnit preferredContentLogicalWidth(float charWidth) const = 0;
virtual LayoutUnit computeControlLogicalHeight(LayoutUnit lineHeight, LayoutUnit nonContentHeight) const = 0;
virtual void updateFromElement() override;
virtual void computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop, LogicalExtentComputedValues&) const override;
virtual RenderObject* layoutSpecialExcludedChild(bool relayoutChildren, SubtreeLayoutScope&) override;
// We need to override this function because we don't want overflow:hidden on an <input>
// to affect the baseline calculation. This is necessary because we are an inline-block
// element as an implementation detail which would normally be affected by this.
virtual int inlineBlockBaseline(LineDirectionMode direction) const override { return lastLineBoxBaseline(direction); }
virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectTextControl || RenderBlockFlow::isOfType(type); }
private:
virtual const char* renderName() const override { return "RenderTextControl"; }
virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const override final;
virtual void computePreferredLogicalWidths() override final;
virtual void removeLeftoverAnonymousBlock(RenderBlock*) override final { }
virtual bool avoidsFloats() const override final { return true; }
virtual bool canHaveGeneratedChildren() const override final { return false; }
virtual void addChild(RenderObject* newChild, RenderObject* beforeChild = 0) override final;
virtual void addFocusRingRects(Vector<LayoutRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer) const override final;
virtual bool canBeProgramaticallyScrolled() const override final { return true; }
};
DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderTextControl, isTextControl());
// 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)
: RenderFlexibleBox(element)
{ }
virtual ~RenderTextControlInnerContainer() { }
virtual int baselinePosition(FontBaseline baseline, bool firstLine, LineDirectionMode direction, LinePositionMode position) const override
{
return RenderBlock::baselinePosition(baseline, firstLine, direction, position);
}
virtual int firstLineBoxBaseline() const override { return RenderBlock::firstLineBoxBaseline(); }
virtual int inlineBlockBaseline(LineDirectionMode direction) const override { return lastLineBoxBaseline(direction); }
};
} // namespace blink
#endif // RenderTextControl_h