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/*
* Copyright (C) 2014 Igalia S.L.
* Copyright (C) 2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#pragma once
#include "RenderObject.h"
namespace WebCore {
struct TextBoxSelectableRange;
class HighlightRange;
class RenderMultiColumnSpannerPlaceholder;
class RenderText;
class RenderRange {
public:
RenderRange() = default;
RenderRange(RenderObject* start, RenderObject* end, unsigned startOffset, unsigned endOffset)
: m_start(start)
, m_end(end)
, m_startOffset(startOffset)
, m_endOffset(endOffset)
{
}
RenderObject* start() const { return m_start.get(); }
RenderObject* end() const { return m_end.get(); }
unsigned startOffset() const { return m_startOffset; }
unsigned endOffset() const { return m_endOffset; }
friend bool operator==(const RenderRange&, const RenderRange&) = default;
private:
SingleThreadWeakPtr<RenderObject> m_start;
SingleThreadWeakPtr<RenderObject> m_end;
unsigned m_startOffset { 0 };
unsigned m_endOffset { 0 };
};
class RenderRangeIterator {
public:
RenderRangeIterator(RenderObject* start);
RenderObject* current() const;
RenderObject* next();
private:
void checkForSpanner();
RenderObject* m_current { nullptr };
Vector<RenderMultiColumnSpannerPlaceholder*> m_spannerStack;
};
class RenderHighlight {
public:
enum IsSelectionTag { IsSelection };
RenderHighlight() = default;
RenderHighlight(IsSelectionTag)
: m_isSelection(true)
{ }
void setRenderRange(const RenderRange&);
bool setRenderRange(const HighlightRange&); // Returns true if successful.
const RenderRange& get() const { return m_renderRange; }
RenderObject* start() const { return m_renderRange.start(); }
RenderObject* end() const { return m_renderRange.end(); }
unsigned startOffset() const { return m_renderRange.startOffset(); }
unsigned endOffset() const { return m_renderRange.endOffset(); }
RenderObject::HighlightState highlightStateForRenderer(const RenderObject&);
RenderObject::HighlightState highlightStateForTextBox(const RenderText&, const TextBoxSelectableRange&);
std::pair<unsigned, unsigned> rangeForTextBox(const RenderText&, const TextBoxSelectableRange&);
protected:
RenderRange m_renderRange;
const bool m_isSelection { false };
};
} // namespace WebCore
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