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/*
* Copyright (C) 2019-2021 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 APPLE INC. AND ITS CONTRIBUTORS ``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 APPLE INC. OR ITS CONTRIBUTORS
* 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 "InlineIteratorBox.h"
#include "RenderText.h"
namespace WebCore {
namespace InlineIterator {
class TextBox : public Box {
public:
TextBox(PathVariant&&);
bool hasHyphen() const;
StringView originalText() const;
unsigned start() const;
unsigned end() const;
unsigned length() const;
TextBoxSelectableRange selectableRange() const;
bool isCombinedText() const;
const FontCascade& fontCascade() const;
inline TextRun textRun(TextRunMode = TextRunMode::Painting) const;
const RenderText& renderer() const { return downcast<RenderText>(Box::renderer()); }
// FIXME: Remove. For intermediate porting steps only.
const LegacyInlineTextBox* legacyInlineBox() const { return downcast<LegacyInlineTextBox>(Box::legacyInlineBox()); }
// This returns the next text box generated for the same RenderText/Layout::InlineTextBox.
TextBoxIterator nextTextBox() const;
};
class TextBoxIterator : public LeafBoxIterator {
public:
TextBoxIterator() { }
TextBoxIterator(Box::PathVariant&&);
TextBoxIterator(const Box&);
TextBoxIterator& operator++() { return traverseNextTextBox(); }
const TextBox& operator*() const { return get(); }
const TextBox* operator->() const { return &get(); }
// This traverses to the next text box generated for the same RenderText/Layout::InlineTextBox.
TextBoxIterator& traverseNextTextBox();
private:
BoxIterator& traverseNextOnLine() = delete;
BoxIterator& traversePreviousOnLine() = delete;
BoxIterator& traverseNextOnLineIgnoringLineBreak() = delete;
BoxIterator& traversePreviousOnLineIgnoringLineBreak() = delete;
const TextBox& get() const { return downcast<TextBox>(m_box); }
};
class TextBoxRange {
public:
TextBoxRange(TextBoxIterator begin)
: m_begin(begin)
{
}
TextBoxIterator begin() const { return m_begin; }
EndIterator end() const { return { }; }
private:
TextBoxIterator m_begin;
};
TextBoxIterator firstTextBoxFor(const RenderText&);
TextBoxIterator textBoxFor(const LegacyInlineTextBox*);
TextBoxIterator textBoxFor(const LayoutIntegration::InlineContent&, const InlineDisplay::Box&);
TextBoxIterator textBoxFor(const LayoutIntegration::InlineContent&, size_t boxIndex);
TextBoxRange textBoxesFor(const RenderText&);
inline bool TextBox::hasHyphen() const
{
return WTF::switchOn(m_pathVariant, [](auto& path) {
return path.hasHyphen();
});
}
inline TextBox::TextBox(PathVariant&& path)
: Box(WTFMove(path))
{
}
inline StringView TextBox::originalText() const
{
return WTF::switchOn(m_pathVariant, [](auto& path) {
return path.originalText();
});
}
inline unsigned TextBox::start() const
{
return WTF::switchOn(m_pathVariant, [](auto& path) {
return path.start();
});
}
inline unsigned TextBox::end() const
{
return WTF::switchOn(m_pathVariant, [](auto& path) {
return path.end();
});
}
inline unsigned TextBox::length() const
{
return WTF::switchOn(m_pathVariant, [](auto& path) {
return path.length();
});
}
inline TextBoxSelectableRange TextBox::selectableRange() const
{
return WTF::switchOn(m_pathVariant, [&](auto& path) {
return path.selectableRange();
});
}
}
}
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::InlineIterator::TextBox)
static bool isType(const WebCore::InlineIterator::Box& box) { return box.isText(); }
SPECIALIZE_TYPE_TRAITS_END()
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::InlineIterator::TextBoxIterator)
static bool isType(const WebCore::InlineIterator::BoxIterator& box) { return !box || box->isText(); }
SPECIALIZE_TYPE_TRAITS_END()
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