text: /*
   * Copyright (C) 2013 Google 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:
   *
   *     * Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   *     * 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.
   *     * Neither the name of Google Inc. nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
   * OWNER OR 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.
   */
  
  #include "config.h"
  #include "core/rendering/AbstractInlineTextBox.h"
  
  #include "core/editing/TextIterator.h"
  #include "platform/text/TextBreakIterator.h"
  
  namespace WebCore {
  
  AbstractInlineTextBox::InlineToAbstractInlineTextBoxHashMap* AbstractInlineTextBox::gAbstractInlineTextBoxMap = 0;
  
  PassRefPtr<AbstractInlineTextBox> AbstractInlineTextBox::getOrCreate(RenderText* renderText, InlineTextBox* inlineTextBox)
  {
      if (!inlineTextBox)
          return nullptr;
  
      if (!gAbstractInlineTextBoxMap)
          gAbstractInlineTextBoxMap = new InlineToAbstractInlineTextBoxHashMap();
  
      InlineToAbstractInlineTextBoxHashMap::const_iterator it = gAbstractInlineTextBoxMap->find(inlineTextBox);
      if (it != gAbstractInlineTextBoxMap->end())
          return it->value;
  
      RefPtr<AbstractInlineTextBox> obj = adoptRef(new AbstractInlineTextBox(renderText, inlineTextBox));
      gAbstractInlineTextBoxMap->set(inlineTextBox, obj);
      return obj;
  }
  
  void AbstractInlineTextBox::willDestroy(InlineTextBox* inlineTextBox)
  {
      if (!gAbstractInlineTextBoxMap)
          return;
  
      InlineToAbstractInlineTextBoxHashMap::const_iterator it = gAbstractInlineTextBoxMap->find(inlineTextBox);
      if (it != gAbstractInlineTextBoxMap->end()) {
          it->value->detach();
          gAbstractInlineTextBoxMap->remove(inlineTextBox);
      }
  }
  
  void AbstractInlineTextBox::detach()
  {
      m_renderText = 0;
      m_inlineTextBox = 0;
  }
  
  PassRefPtr<AbstractInlineTextBox> AbstractInlineTextBox::nextInlineTextBox() const
  {
      if (!m_inlineTextBox)
          return nullptr;
  
      return getOrCreate(m_renderText, m_inlineTextBox->nextTextBox());
  }
  
  LayoutRect AbstractInlineTextBox::bounds() const
  {
      if (!m_inlineTextBox || !m_renderText)
          return LayoutRect();
  
      FloatRect boundaries = m_inlineTextBox->calculateBoundaries();
      return m_renderText->localToAbsoluteQuad(boundaries).enclosingBoundingBox();
  }
  
  unsigned AbstractInlineTextBox::start() const
  {
      if (!m_inlineTextBox)
          return 0;
  
      return m_inlineTextBox->start();
  }
  
  unsigned AbstractInlineTextBox::len() const
  {
      if (!m_inlineTextBox)
          return 0;
  
      return m_inlineTextBox->len();
  }
  
  AbstractInlineTextBox::Direction AbstractInlineTextBox::direction() const
  {
      if (!m_inlineTextBox || !m_renderText)
          return LeftToRight;
  
      if (m_renderText->style()->isHorizontalWritingMode())
          return (m_inlineTextBox->direction() == RTL ? RightToLeft : LeftToRight);
      return (m_inlineTextBox->direction() == RTL ? BottomToTop : TopToBottom);
  }
  
  void AbstractInlineTextBox::characterWidths(Vector<float>& widths) const
  {
      if (!m_inlineTextBox)
          return;
  
      m_inlineTextBox->characterWidths(widths);
  }
  
  void AbstractInlineTextBox::wordBoundaries(Vector<WordBoundaries>& words) const
  {
      if (!m_inlineTextBox)
          return;
  
      String text = this->text();
      int len = text.length();
      TextBreakIterator* iterator = wordBreakIterator(text, 0, len);
      int pos = iterator->first();
      while (pos >= 0 && pos < len) {
          int next = iterator->next();
          if (isWordTextBreak(iterator))
              words.append(WordBoundaries(pos, next));
          pos = next;
      }
  }
  
  String AbstractInlineTextBox::text() const
  {
      if (!m_inlineTextBox || !m_renderText)
          return String();
  
      unsigned start = m_inlineTextBox->start();
      unsigned len = m_inlineTextBox->len();
      if (Node* node = m_renderText->node()) {
          RefPtrWillBeRawPtr<Range> range = Range::create(node->document());
          range->setStart(node, start, IGNORE_EXCEPTION);
          range->setEnd(node, start + len, IGNORE_EXCEPTION);
          return plainText(range.get(), TextIteratorIgnoresStyleVisibility);
      }
  
      String result = m_renderText->text().substring(start, len).simplifyWhiteSpace(WTF::DoNotStripWhiteSpace);
      if (m_inlineTextBox->nextTextBox() && m_inlineTextBox->nextTextBox()->start() > m_inlineTextBox->end() && result.length() && !result.right(1).containsOnlyWhitespace())
          return result + " ";
      return result;
  }
  
  } // namespace WebCore
  