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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_vcl.hxx"
#include <sal/types.h>

#ifndef _TRANSFERABLE_HXX_
#include "OSXTransferable.hxx"
#endif

#include "DataFlavorMapping.hxx"

using namespace rtl;
using namespace std;
using namespace osl;
using namespace cppu;
using namespace com::sun::star::uno;
using namespace com::sun::star::datatransfer;
using namespace com::sun::star::io;
using namespace com::sun::star::lang;
using namespace com::sun::star::container;

const Type CPPUTYPE_SEQINT8  = getCppuType((Sequence<sal_Int8>*)0);
const Type CPPUTYPE_OUSTRING = getCppuType((OUString*)0);

namespace // private 
{
	bool isValidFlavor( const DataFlavor& aFlavor )
	{
	  size_t len = aFlavor.MimeType.getLength();
	  Type dtype = aFlavor.DataType;
	  return ((len > 0) && ((dtype == CPPUTYPE_SEQINT8) || (dtype == CPPUTYPE_OUSTRING)));
	}

} // namespace private


OSXTransferable::OSXTransferable(const Reference<XMimeContentTypeFactory> rXMimeCntFactory,
								 DataFlavorMapperPtr_t pDataFlavorMapper,		  
								 NSPasteboard* pasteboard) :
  mrXMimeCntFactory(rXMimeCntFactory),
  mDataFlavorMapper(pDataFlavorMapper),
  mPasteboard(pasteboard)
{		
  [mPasteboard retain];

  initClipboardItemList();
}


OSXTransferable::~OSXTransferable()
{
  [mPasteboard release];
}


Any SAL_CALL OSXTransferable::getTransferData( const DataFlavor& aFlavor ) 
  throw( UnsupportedFlavorException, IOException, RuntimeException )
{
  if (!isValidFlavor(aFlavor) || !isDataFlavorSupported(aFlavor))
	{
	  throw UnsupportedFlavorException(OUString(RTL_CONSTASCII_USTRINGPARAM("AquaClipboard: Unsupported data flavor")),
									   static_cast<XTransferable*>(this));
	}

  bool bInternal(false);
  const NSString* sysFormat = 
      (aFlavor.MimeType.compareToAscii( "image/png", 9 ) == 0)
      ? mDataFlavorMapper->openOfficeImageToSystemFlavor( mPasteboard )
      : mDataFlavorMapper->openOfficeToSystemFlavor(aFlavor, bInternal);
  DataProviderPtr_t dp;

  if ([sysFormat caseInsensitiveCompare: NSFilenamesPboardType] == NSOrderedSame)
	{
	  NSArray* sysData = [mPasteboard propertyListForType: (NSString*)sysFormat];
	  dp = mDataFlavorMapper->getDataProvider(sysFormat, sysData);
	}
  else
	{
	  NSData* sysData = [mPasteboard dataForType: (NSString*)sysFormat];
	  dp = mDataFlavorMapper->getDataProvider(sysFormat, sysData);
	}

  if (dp.get() == NULL)
	{
	  throw UnsupportedFlavorException(OUString(RTL_CONSTASCII_USTRINGPARAM("AquaClipboard: Unsupported data flavor")),
									   static_cast<XTransferable*>(this));
	}

  return dp->getOOoData();
}


bool OSXTransferable::isUnicodeText(const DataFlavor& flavor)
{
  return (flavor.DataType == CPPUTYPE_OUSTRING);
}


Sequence< DataFlavor > SAL_CALL OSXTransferable::getTransferDataFlavors(  ) 
	throw( RuntimeException )
{	
  return mFlavorList;
}


sal_Bool SAL_CALL OSXTransferable::isDataFlavorSupported(const DataFlavor& aFlavor) 
	throw( RuntimeException )
{
	for (sal_Int32 i = 0; i < mFlavorList.getLength(); i++)
	  if (compareDataFlavors(aFlavor, mFlavorList[i]))
		return sal_True;

	return sal_False;
}


void OSXTransferable::initClipboardItemList()
{
  NSArray* pboardFormats = [mPasteboard types];
  
  if (pboardFormats == NULL)
	{
	  throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM("AquaClipboard: Cannot get clipboard data")), 
							 static_cast<XTransferable*>(this));
	}
  
  mFlavorList = mDataFlavorMapper->typesArrayToFlavorSequence(pboardFormats);
}


/* Compares two DataFlavors. Returns true if both DataFlavor have the same media type
   and the number of parameter and all parameter values do match otherwise false
   is returned.
 */
bool OSXTransferable::compareDataFlavors(const DataFlavor& lhs, const DataFlavor& rhs )
{
	try
	{
		Reference<XMimeContentType> xLhs(mrXMimeCntFactory->createMimeContentType(lhs.MimeType));
		Reference<XMimeContentType> xRhs(mrXMimeCntFactory->createMimeContentType(rhs.MimeType));

		if (!xLhs->getFullMediaType().equalsIgnoreAsciiCase(xRhs->getFullMediaType()) ||
			!cmpAllContentTypeParameter(xLhs, xRhs))
		  {
			return false;
		  }
	}
	catch( IllegalArgumentException& )
	{
		OSL_ENSURE( sal_False, "Invalid content type detected" );
		return false;
	}

	return true;
}


bool OSXTransferable::cmpAllContentTypeParameter(const Reference<XMimeContentType> xLhs, 
											   const Reference<XMimeContentType> xRhs) const
{
  Sequence<OUString> xLhsFlavors = xLhs->getParameters();
  Sequence<OUString> xRhsFlavors = xRhs->getParameters();

  // Stop here if the number of parameters is different already
  if (xLhsFlavors.getLength() != xRhsFlavors.getLength())
	return false;

  try
	{	  
	  OUString pLhs;
	  OUString pRhs;

	  for (sal_Int32 i = 0; i < xLhsFlavors.getLength(); i++)
		{	
		  pLhs = xLhs->getParameterValue(xLhsFlavors[i]);
		  pRhs = xRhs->getParameterValue(xLhsFlavors[i]);

		  if (!pLhs.equalsIgnoreAsciiCase(pRhs))
			{
			  return false;
			}
		}
	}
  catch(IllegalArgumentException&)
	{
	  return false;
	}

  return true;
}