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