third_party/WebKit/Source/web/WebRange.cpp

/*
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#include "public/web/WebRange.h"

#include "core/dom/Document.h"
#include "core/dom/Range.h"
#include "core/editing/FrameSelection.h"
#include "core/editing/PlainTextRange.h"
#include "core/frame/LocalFrame.h"

namespace blink {

WebRange::WebRange(int start, int length)
    : m_start(start), m_end(start + length) {
  DCHECK(start != -1 || length != 0)
      << "These values are reserved to indicate that the range is null";
}

WebRange::WebRange(const EphemeralRange& range) {
  if (range.isNull())
    return;

  m_start = range.startPosition().computeOffsetInContainerNode();
  m_end = range.endPosition().computeOffsetInContainerNode();
}

WebRange::WebRange(const PlainTextRange& range) {
  if (range.isNull())
    return;

  m_start = range.start();
  m_end = range.end();
}

EphemeralRange WebRange::createEphemeralRange(LocalFrame* frame) const {
  Element* selectionRoot = frame->selection().rootEditableElement();
  ContainerNode* scope =
      selectionRoot ? selectionRoot : frame->document()->documentElement();

  return PlainTextRange(m_start, m_end).createRange(*scope);
}

}  // namespace blink