path: root/vcl/ios/source/dtrans/ios_clipboard.cxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file 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 .
 */

#include "ios_clipboard.hxx"

#include "iOSTransferable.hxx"

#include "comphelper/makesequence.hxx"
#include "comphelper/processfactory.hxx"

#include <boost/assert.hpp>

using namespace com::sun::star::datatransfer;
using namespace com::sun::star::datatransfer::clipboard;
using namespace com::sun::star::lang;
using namespace com::sun::star::uno;
using namespace cppu;
using namespace osl;
using namespace std;
using namespace comphelper;

using ::rtl::OUString;

@implementation EventListener;

-(EventListener*)initWithIosClipboard: (IosClipboard*) pcb
{
    self = [super init];

    if (self)
        pIosClipboard = pcb;

    return self;
}

-(void)pasteboard:(UIPasteboard*)sender provideDataForType:(NSString*)type
{
    if( pIosClipboard )
        pIosClipboard->provideDataForType(sender, type);
}

-(void)applicationDidBecomeActive:(NSNotification*)aNotification
{
    if( pIosClipboard )
        pIosClipboard->applicationDidBecomeActive(aNotification);
}

-(void)disposing
{
    pIosClipboard = NULL;
}

@end


OUString clipboard_getImplementationName()
{
  return OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.datatransfer.clipboard.IosClipboard"));
}

Sequence<OUString> clipboard_getSupportedServiceNames()
{
  return makeSequence(OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.datatransfer.clipboard.SystemClipboard")));
}


IosClipboard::IosClipboard(UIPasteboard* pasteboard, bool bUseSystemPasteboard) :
  WeakComponentImplHelper3<XSystemClipboard, XFlushableClipboard, XServiceInfo>(m_aMutex),
  mIsSystemPasteboard(bUseSystemPasteboard)
{
    Reference<XMultiServiceFactory> mrServiceMgr = comphelper::getProcessServiceFactory();

    mrXMimeCntFactory = Reference<XMimeContentTypeFactory>(mrServiceMgr->createInstance(
     OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.datatransfer.MimeContentTypeFactory"))), UNO_QUERY);

  if (!mrXMimeCntFactory.is())
    {
      throw RuntimeException(OUString(
            RTL_CONSTASCII_USTRINGPARAM("IosClipboard: Cannot create com.sun.star.datatransfer.MimeContentTypeFactory")),
            static_cast<XClipboardEx*>(this));
    }
#if 0 // ???
  mpDataFlavorMapper = DataFlavorMapperPtr_t(new DataFlavorMapper());
#endif
  if (pasteboard != NULL)
    {
      mPasteboard = pasteboard;
      mIsSystemPasteboard = false;
    }
  else
    {
      mPasteboard = bUseSystemPasteboard ? [UIPasteboard generalPasteboard] :
        [UIPasteboard pasteboardWithName: @"org.libreoffice.pboard" create: YES];

      if (mPasteboard == nil)
        {
          throw RuntimeException(OUString(
                RTL_CONSTASCII_USTRINGPARAM("IosClipboard: Cannot create pasteboard")),
                static_cast<XClipboardEx*>(this));
        }
    }

  [mPasteboard retain];

  mEventListener = [[EventListener alloc] initWithIosClipboard: this];

  if (mEventListener == nil)
    {
      [mPasteboard release];

      throw RuntimeException(
            OUString(RTL_CONSTASCII_USTRINGPARAM("IosClipboard: Cannot create pasteboard change listener")),
            static_cast<XClipboardEx*>(this));
    }

  if (mIsSystemPasteboard)
    {
      NSNotificationCenter* notificationCenter = [NSNotificationCenter defaultCenter];

      [notificationCenter addObserver: mEventListener
       selector: @selector(applicationDidBecomeActive:)
       name: @"UIApplicationDidBecomeActiveNotification"
       object: [UIApplication sharedApplication]];
    }

  mPasteboardChangeCount = [mPasteboard changeCount];
}


IosClipboard::~IosClipboard()
{
  if (mIsSystemPasteboard)
    {
      [[NSNotificationCenter defaultCenter] removeObserver: mEventListener];
    }

  [mEventListener disposing];
  [mEventListener release];
  [mPasteboard release];
}


Reference<XTransferable> SAL_CALL IosClipboard::getContents() throw(RuntimeException)
{
  MutexGuard aGuard(m_aMutex);

  // Shortcut: If we are clipboard owner already we don't need
  // to drag the data through the system clipboard
  if (mXClipboardContent.is())
    {
      return mXClipboardContent;
    }

  return Reference<XTransferable>(new iOSTransferable(mrXMimeCntFactory,
                                                      mPasteboard));
}


void SAL_CALL IosClipboard::setContents(const Reference<XTransferable>& /*xTransferable*/,
                                        const Reference<XClipboardOwner>& /*xClipboardOwner*/)
        throw( RuntimeException )
{
#if 0 // ???
    NSArray* types = xTransferable.is() ?
        mpDataFlavorMapper->flavorSequenceToTypesArray(xTransferable->getTransferDataFlavors()) :
        [NSArray array];

    ClearableMutexGuard aGuard(m_aMutex);

    Reference<XClipboardOwner> oldOwner(mXClipboardOwner);
    mXClipboardOwner = xClipboardOwner;

    Reference<XTransferable> oldContent(mXClipboardContent);
    mXClipboardContent = xTransferable;

    mPasteboardChangeCount = [mPasteboard declareTypes: types owner: mEventListener];

    aGuard.clear();

    // if we are already the owner of the clipboard
    // then fire lost ownership event
    if (oldOwner.is())
    {
        fireLostClipboardOwnershipEvent(oldOwner, oldContent);
    }

    fireClipboardChangedEvent();
#endif
}


OUString SAL_CALL IosClipboard::getName() throw( RuntimeException )
{
  return OUString();
}


sal_Int8 SAL_CALL IosClipboard::getRenderingCapabilities() throw( RuntimeException )
{
    return 0;
}


void SAL_CALL IosClipboard::addClipboardListener(const Reference< XClipboardListener >& listener)
  throw( RuntimeException )
{
  MutexGuard aGuard(m_aMutex);

  if (!listener.is())
     throw IllegalArgumentException(OUString(RTL_CONSTASCII_USTRINGPARAM("empty reference")),
                                   static_cast<XClipboardEx*>(this), 1);

  mClipboardListeners.push_back(listener);
}


void SAL_CALL IosClipboard::removeClipboardListener(const Reference< XClipboardListener >& listener)
  throw( RuntimeException )
{
  MutexGuard aGuard(m_aMutex);

  if (!listener.is())
     throw IllegalArgumentException(OUString(RTL_CONSTASCII_USTRINGPARAM("empty reference")),
                                   static_cast<XClipboardEx*>(this), 1);

  mClipboardListeners.remove(listener);
}


void IosClipboard::applicationDidBecomeActive(NSNotification*)
{
  ClearableMutexGuard aGuard(m_aMutex);

  int currentPboardChgCount = [mPasteboard changeCount];

  if (currentPboardChgCount != mPasteboardChangeCount)
    {
      mPasteboardChangeCount = currentPboardChgCount;

      // Clear clipboard content and owner and send lostOwnership
      // notification to the old clipboard owner as well as
      // ClipboardChanged notification to any clipboard listener
      Reference<XClipboardOwner> oldOwner(mXClipboardOwner);
      mXClipboardOwner = Reference<XClipboardOwner>();

      Reference<XTransferable> oldContent(mXClipboardContent);
      mXClipboardContent = Reference<XTransferable>();

      aGuard.clear();

      if (oldOwner.is())
        {
          fireLostClipboardOwnershipEvent(oldOwner, oldContent);
        }

      fireClipboardChangedEvent();
    }
}


void IosClipboard::fireClipboardChangedEvent()
{
    ClearableMutexGuard aGuard(m_aMutex);

    list<Reference< XClipboardListener > > listeners(mClipboardListeners);
    ClipboardEvent aEvent;

    if (listeners.begin() != listeners.end())
      {
        aEvent = ClipboardEvent(static_cast<OWeakObject*>(this), getContents());
      }

    aGuard.clear();

    while (listeners.begin() != listeners.end())
    {
        if (listeners.front().is())
          {
            try { listeners.front()->changedContents(aEvent); }
            catch (RuntimeException&) { }
          }
        listeners.pop_front();
    }
}


void IosClipboard::fireLostClipboardOwnershipEvent(Reference<XClipboardOwner> oldOwner, Reference<XTransferable> oldContent)
{
  BOOST_ASSERT(oldOwner.is());

  try { oldOwner->lostOwnership(static_cast<XClipboardEx*>(this), oldContent); }
  catch(RuntimeException&) { }
}


void IosClipboard::provideDataForType(UIPasteboard* /*sender*/, NSString* /*type*/)
{
#if 0 // ???
    if( mXClipboardContent.is() )
    {
        DataProviderPtr_t dp = mpDataFlavorMapper->getDataProvider(type, mXClipboardContent);
        NSData* pBoardData = NULL;

        if (dp.get() != NULL)
        {
            pBoardData = (NSData*)dp->getSystemData();
            [sender setData: pBoardData forType: type];
        }
    }
#endif
}


//------------------------------------------------
// XFlushableClipboard
//------------------------------------------------

void SAL_CALL IosClipboard::flushClipboard()
  throw(RuntimeException)
{
#if 0 // ???
    if (mXClipboardContent.is())
    {
          Sequence<DataFlavor> flavorList = mXClipboardContent->getTransferDataFlavors();
        sal_uInt32 nFlavors = flavorList.getLength();

        for (sal_uInt32 i = 0; i < nFlavors; i++)
        {
            NSString* sysType = mpDataFlavorMapper->openOfficeToSystemFlavor(flavorList[i]);

            if (sysType != NULL)
            {
                provideDataForType(mPasteboard, sysType);
            }
        }
        mXClipboardContent.clear();
    }
#endif
}


UIPasteboard* IosClipboard::getPasteboard() const
{
  return mPasteboard;
}


//-------------------------------------------------
// XServiceInfo
//-------------------------------------------------

OUString SAL_CALL IosClipboard::getImplementationName() throw( RuntimeException )
{
  return clipboard_getImplementationName();
}


sal_Bool SAL_CALL IosClipboard::supportsService( const OUString& /*ServiceName*/ ) throw( RuntimeException )
{
    return sal_False;
}


Sequence< OUString > SAL_CALL IosClipboard::getSupportedServiceNames() throw( RuntimeException )
{
  return clipboard_getSupportedServiceNames();
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */