third_party/WebKit/Source/core/page/DragData.cpp

/*
 * Copyright (C) 2007 Apple Inc.  All rights reserved.
 * Copyright (C) 2013 Google Inc.
 *
 * 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 COMPUTER, INC. ``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 COMPUTER, INC. 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.
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#include "core/page/DragData.h"

#include "core/clipboard/DataObject.h"
#include "core/dom/DocumentFragment.h"
#include "core/dom/Range.h"
#include "core/editing/serializers/Serialization.h"
#include "core/frame/LocalFrame.h"
#include "platform/FileMetadata.h"
#include "platform/clipboard/ClipboardMimeTypes.h"
#include "platform/weborigin/KURL.h"
#include "wtf/text/WTFString.h"

namespace blink {

DragData::DragData(DataObject* data,
                   const IntPoint& clientPosition,
                   const IntPoint& globalPosition,
                   DragOperation sourceOperationMask,
                   DragApplicationFlags flags)
    : m_clientPosition(clientPosition),
      m_globalPosition(globalPosition),
      m_platformDragData(data),
      m_draggingSourceOperationMask(sourceOperationMask),
      m_applicationFlags(flags) {}

bool DragData::containsHTML() const {
  return m_platformDragData->types().contains(mimeTypeTextHTML);
}

bool DragData::containsURL(FilenameConversionPolicy filenamePolicy) const {
  return m_platformDragData->types().contains(mimeTypeTextURIList) ||
         (filenamePolicy == ConvertFilenames &&
          m_platformDragData->containsFilenames());
}

String DragData::asURL(FilenameConversionPolicy filenamePolicy,
                       String* title) const {
  String url;
  if (m_platformDragData->types().contains(mimeTypeTextURIList))
    m_platformDragData->urlAndTitle(url, title);
  else if (filenamePolicy == ConvertFilenames && containsFiles())
    url = filePathToURL(m_platformDragData->filenames()[0]);
  return url;
}

bool DragData::containsFiles() const {
  return m_platformDragData->containsFilenames();
}

int DragData::modifiers() const {
  return m_platformDragData->modifiers();
}

void DragData::asFilePaths(Vector<String>& result) const {
  const Vector<String>& filenames = m_platformDragData->filenames();
  for (size_t i = 0; i < filenames.size(); ++i) {
    if (!filenames[i].isEmpty())
      result.append(filenames[i]);
  }
}

unsigned DragData::numberOfFiles() const {
  return m_platformDragData->filenames().size();
}

bool DragData::containsPlainText() const {
  return m_platformDragData->types().contains(mimeTypeTextPlain);
}

String DragData::asPlainText() const {
  return m_platformDragData->getData(mimeTypeTextPlain);
}

bool DragData::canSmartReplace() const {
  // Mimic the situations in which mac allows drag&drop to do a smart replace.
  // This is allowed whenever the drag data contains a 'range' (ie.,
  // ClipboardWin::writeRange is called). For example, dragging a link
  // should not result in a space being added.
  return m_platformDragData->types().contains(mimeTypeTextPlain) &&
         !m_platformDragData->types().contains(mimeTypeTextURIList);
}

bool DragData::containsCompatibleContent() const {
  return containsPlainText() || containsURL() || containsHTML() ||
         containsFiles();
}

DocumentFragment* DragData::asFragment(LocalFrame* frame) const {
  /*
     * Order is richest format first. On OSX this is:
     * * Web Archive
     * * Filenames
     * * HTML
     * * RTF
     * * TIFF
     * * PICT
     */

  if (containsFiles()) {
    // FIXME: Implement this. Should be pretty simple to make some HTML
    // and call createFragmentFromMarkup.
  }

  if (containsHTML()) {
    String html;
    KURL baseURL;
    m_platformDragData->htmlAndBaseURL(html, baseURL);
    DCHECK(frame->document());
    if (DocumentFragment* fragment =
            createFragmentFromMarkup(*frame->document(), html, baseURL,
                                     DisallowScriptingAndPluginContent))
      return fragment;
  }

  return nullptr;
}

String DragData::droppedFileSystemId() const {
  return m_platformDragData->filesystemId();
}

}  // namespace blink