third_party/WebKit/Source/core/layout/LayoutTextControlSingleLine.h

/*
 * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
 * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 *
 * 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 LayoutTextControlSingleLine_h
#define LayoutTextControlSingleLine_h

#include "core/html/HTMLInputElement.h"
#include "core/layout/LayoutTextControl.h"

namespace blink {

class HTMLInputElement;

class LayoutTextControlSingleLine : public LayoutTextControl {
public:
    LayoutTextControlSingleLine(HTMLInputElement*);
    ~LayoutTextControlSingleLine() override;
    // FIXME: Move createInnerEditorStyle() to TextControlInnerEditorElement.
    PassRefPtr<ComputedStyle> createInnerEditorStyle(const ComputedStyle& startStyle) const final;

    void capsLockStateMayHaveChanged();

protected:
    Element* containerElement() const;
    Element* editingViewPortElement() const;
    HTMLInputElement* inputElement() const;

private:
    bool hasControlClip() const final;
    LayoutRect controlClipRect(const LayoutPoint&) const final;
    bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectTextField || LayoutTextControl::isOfType(type); }

    void paint(const PaintInfo&, const LayoutPoint&) const override;
    void layout() override;

    bool nodeAtPoint(HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) final;

    void autoscroll(const IntPoint&) final;

    // Subclassed to forward to our inner div.
    LayoutUnit scrollLeft() const final;
    LayoutUnit scrollTop() const final;
    LayoutUnit scrollWidth() const final;
    LayoutUnit scrollHeight() const final;
    void setScrollLeft(LayoutUnit) final;
    void setScrollTop(LayoutUnit) final;

    int textBlockWidth() const;
    float getAvgCharWidth(const AtomicString& family) const final;
    LayoutUnit preferredContentLogicalWidth(float charWidth) const final;
    LayoutUnit computeControlLogicalHeight(LayoutUnit lineHeight, LayoutUnit nonContentHeight) const override;
    void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) final;
    void addOverflowFromChildren() final;

    bool allowsOverflowClip() const override { return false; }

    bool textShouldBeTruncated() const;
    HTMLElement* innerSpinButtonElement() const;

    bool m_shouldDrawCapsLockIndicator;
};

DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutTextControlSingleLine, isTextField());

// ----------------------------

class LayoutTextControlInnerBlock : public LayoutBlockFlow {
public:
    LayoutTextControlInnerBlock(Element* element) : LayoutBlockFlow(element) { }
    bool shouldIgnoreOverflowPropertyForInlineBlockBaseline() const override { return true; }

private:
    bool isIntrinsicallyScrollable(ScrollbarOrientation orientation) const override
    {
        return orientation == HorizontalScrollbar;
    }
    bool scrollsOverflowX() const override { return hasOverflowClip(); }
    bool scrollsOverflowY() const override { return false; }
    bool hasLineIfEmpty() const override { return true; }
};

} // namespace blink

#endif