desktop/source/lib/lokclipboard.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include "lokclipboard.hxx"
  11 #include <vcl/lazydelete.hxx>
  12 #include <sfx2/lokhelper.hxx>
  13 #include <cppuhelper/supportsservice.hxx>
  14
  15 using namespace css;
  16 using namespace css::uno;
  17
  18 /* static */ osl::Mutex LOKClipboardFactory::gMutex;
  19 static vcl::DeleteOnDeinit<std::unordered_map<int, rtl::Reference<LOKClipboard>>>
  20 gClipboards(new std::unordered_map<int, rtl::Reference<LOKClipboard>>);
  21
  22 rtl::Reference<LOKClipboard> LOKClipboardFactory::getClipboardForCurView()
  23 {
  24     int nViewId = SfxLokHelper::getView(); // currently active.
  25
  26     osl::MutexGuard aGuard(gMutex);
  27
  28     auto it = gClipboards.get()->find(nViewId);
  29     if (it != gClipboards.get()->end())
  30     {
  31         SAL_INFO("lok", "Got clip: " << it->second.get() << " from " << nViewId);
  32         return it->second;
  33     }
  34     rtl::Reference<LOKClipboard> xClip(new LOKClipboard());
  35     (*gClipboards.get())[nViewId] = xClip;
  36     SAL_INFO("lok", "Created clip: " << xClip.get() << " for viewId " << nViewId);
  37     return xClip;
  38 }
  39
  40 /// FIXME: should really copy and stash its content for a bit.
  41 void LOKClipboardFactory::releaseClipboardForView(int nViewId)
  42 {
  43     osl::MutexGuard aGuard(gMutex);
  44
  45     if (nViewId < 0) // clear all
  46     {
  47         gClipboards.get()->clear();
  48         SAL_INFO("lok", "Released all clipboards on doc destroy\n");
  49     }
  50     else
  51     {
  52         auto it = gClipboards.get()->find(nViewId);
  53         if (it != gClipboards.get()->end())
  54         {
  55             gClipboards.get()->erase(it);
  56             SAL_INFO("lok", "Released clip: " << it->second.get() << " for destroyed " << nViewId);
  57         }
  58     }
  59 }
  60
  61 uno::Reference<uno::XInterface>
  62     SAL_CALL LOKClipboardFactory::createInstanceWithArguments(const Sequence<Any>& /* rArgs */)
  63 {
  64     return uno::Reference<uno::XInterface>(
  65         static_cast<cppu::OWeakObject*>(getClipboardForCurView().get()));
  66 }
  67
  68 LOKClipboard::LOKClipboard()
  69     : cppu::WeakComponentImplHelper<css::datatransfer::clipboard::XSystemClipboard,
  70                                     css::lang::XServiceInfo>(m_aMutex)
  71 {
  72 }
  73
  74 Sequence<OUString> LOKClipboard::getSupportedServiceNames_static()
  75 {
  76     Sequence<OUString> aRet{ "com.sun.star.datatransfer.clipboard.SystemClipboard" };
  77     return aRet;
  78 }
  79
  80 OUString LOKClipboard::getImplementationName()
  81 {
  82     return OUString("com.sun.star.datatransfer.LOKClipboard");
  83 }
  84
  85 Sequence<OUString> LOKClipboard::getSupportedServiceNames()
  86 {
  87     return getSupportedServiceNames_static();
  88 }
  89
  90 sal_Bool LOKClipboard::supportsService(const OUString& ServiceName)
  91 {
  92     return cppu::supportsService(this, ServiceName);
  93 }
  94
  95 Reference<css::datatransfer::XTransferable> LOKClipboard::getContents() { return m_xTransferable; }
  96
  97 void LOKClipboard::setContents(
  98     const Reference<css::datatransfer::XTransferable>& xTrans,
  99     const Reference<css::datatransfer::clipboard::XClipboardOwner>& xClipboardOwner)
 100 {
 101     osl::ClearableMutexGuard aGuard(m_aMutex);
 102     Reference<datatransfer::clipboard::XClipboardOwner> xOldOwner(m_aOwner);
 103     Reference<datatransfer::XTransferable> xOldContents(m_xTransferable);
 104     m_xTransferable = xTrans;
 105     m_aOwner = xClipboardOwner;
 106
 107     std::vector<Reference<datatransfer::clipboard::XClipboardListener>> aListeners(m_aListeners);
 108     datatransfer::clipboard::ClipboardEvent aEv;
 109     aEv.Contents = m_xTransferable;
 110     SAL_INFO("lok", "Clip: " << this << " set contents to " << m_xTransferable);
 111
 112     aGuard.clear();
 113
 114     if (xOldOwner.is() && xOldOwner != xClipboardOwner)
 115         xOldOwner->lostOwnership(this, xOldContents);
 116     for (auto const& listener : aListeners)
 117     {
 118         listener->changedContents(aEv);
 119     }
 120 }
 121
 122 void LOKClipboard::addClipboardListener(
 123     const Reference<datatransfer::clipboard::XClipboardListener>& listener)
 124 {
 125     osl::ClearableMutexGuard aGuard(m_aMutex);
 126     m_aListeners.push_back(listener);
 127 }
 128
 129 void LOKClipboard::removeClipboardListener(
 130     const Reference<datatransfer::clipboard::XClipboardListener>& listener)
 131 {
 132     osl::ClearableMutexGuard aGuard(m_aMutex);
 133     m_aListeners.erase(std::remove(m_aListeners.begin(), m_aListeners.end(), listener),
 134                        m_aListeners.end());
 135 }
 136 LOKTransferable::LOKTransferable(const OUString& sMimeType,
 137                                  const css::uno::Sequence<sal_Int8>& aSequence)
 138 {
 139     m_aContent.reserve(1);
 140     m_aFlavors = css::uno::Sequence<css::datatransfer::DataFlavor>(1);
 141     initFlavourFromMime(m_aFlavors[0], sMimeType);
 142
 143     uno::Any aContent;
 144     if (m_aFlavors[0].DataType == cppu::UnoType<OUString>::get())
 145     {
 146         auto pText = reinterpret_cast<const sal_Char*>(aSequence.getConstArray());
 147         aContent <<= OUString(pText, aSequence.getLength(), RTL_TEXTENCODING_UTF8);
 148     }
 149     else
 150         aContent <<= aSequence;
 151     m_aContent.push_back(aContent);
 152 }
 153 // cf. sot/source/base/exchange.cxx for these two exceptional types.
 154 void LOKTransferable::initFlavourFromMime(css::datatransfer::DataFlavor& rFlavor,
 155                                           OUString aMimeType)
 156 {
 157     if (aMimeType.startsWith("text/plain"))
 158     {
 159         aMimeType = "text/plain;charset=utf-16";
 160         rFlavor.DataType = cppu::UnoType<OUString>::get();
 161     }
 162     else if (aMimeType == "application/x-libreoffice-tsvc")
 163         rFlavor.DataType = cppu::UnoType<OUString>::get();
 164     else
 165         rFlavor.DataType = cppu::UnoType<uno::Sequence<sal_Int8>>::get();
 166     rFlavor.MimeType = aMimeType;
 167     rFlavor.HumanPresentableName = aMimeType;
 168 }
 169
 170 LOKTransferable::LOKTransferable(const size_t nInCount, const char** pInMimeTypes,
 171                                  const size_t* pInSizes, const char** pInStreams)
 172 {
 173     m_aContent.reserve(nInCount);
 174     m_aFlavors = css::uno::Sequence<css::datatransfer::DataFlavor>(nInCount);
 175     for (size_t i = 0; i < nInCount; ++i)
 176     {
 177         OUString aMimeType = OUString::fromUtf8(pInMimeTypes[i]);
 178
 179         // cf. sot/source/base/exchange.cxx for these two exceptional types.
 180         if (aMimeType.startsWith("text/plain"))
 181         {
 182             aMimeType = "text/plain;charset=utf-16";
 183             m_aFlavors[i].DataType = cppu::UnoType<OUString>::get();
 184         }
 185         else if (aMimeType == "application/x-libreoffice-tsvc")
 186             m_aFlavors[i].DataType = cppu::UnoType<OUString>::get();
 187         else
 188             m_aFlavors[i].DataType = cppu::UnoType<uno::Sequence<sal_Int8>>::get();
 189         m_aFlavors[i].MimeType = aMimeType;
 190         m_aFlavors[i].HumanPresentableName = aMimeType;
 191
 192         uno::Any aContent;
 193         if (m_aFlavors[i].DataType == cppu::UnoType<OUString>::get())
 194             aContent <<= OUString(pInStreams[i], pInSizes[i], RTL_TEXTENCODING_UTF8);
 195         else
 196             aContent <<= css::uno::Sequence<sal_Int8>(
 197                 reinterpret_cast<const sal_Int8*>(pInStreams[i]), pInSizes[i]);
 198         m_aContent.push_back(aContent);
 199     }
 200 }
 201
 202 uno::Any SAL_CALL LOKTransferable::getTransferData(const datatransfer::DataFlavor& rFlavor)
 203 {
 204     assert(m_aContent.size() == static_cast<size_t>(m_aFlavors.getLength()));
 205     for (size_t i = 0; i < m_aContent.size(); ++i)
 206     {
 207         if (m_aFlavors[i].MimeType == rFlavor.MimeType)
 208         {
 209             if (m_aFlavors[i].DataType != rFlavor.DataType)
 210                 SAL_WARN("lok", "Horror type mismatch!");
 211             return m_aContent[i];
 212         }
 213     }
 214     return uno::Any();
 215 }
 216
 217 uno::Sequence<datatransfer::DataFlavor> SAL_CALL LOKTransferable::getTransferDataFlavors()
 218 {
 219     return m_aFlavors;
 220 }
 221
 222 sal_Bool SAL_CALL LOKTransferable::isDataFlavorSupported(const datatransfer::DataFlavor& rFlavor)
 223 {
 224     return std::find_if(m_aFlavors.begin(), m_aFlavors.end(),
 225                         [&rFlavor](const datatransfer::DataFlavor& i) {
 226                             return i.MimeType == rFlavor.MimeType && i.DataType == rFlavor.DataType;
 227                         })
 228            != m_aFlavors.end();
 229 }
 230
 231 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */