svx/source/unodraw/unoshcol.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  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <com/sun/star/document/EventObject.hpp>
  21 #include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
  22 #include <com/sun/star/uno/XComponentContext.hpp>
  23
  24 #include <cppuhelper/supportsservice.hxx>
  25 #include <osl/diagnose.h>
  26 #include <sal/log.hxx>
  27 #include <shapecollection.hxx>
  28
  29 using namespace ::com::sun::star;
  30 using namespace ::com::sun::star::uno;
  31
  32 SvxShapeCollection::SvxShapeCollection() noexcept
  33 {
  34 }
  35
  36 // XInterface
  37 void SvxShapeCollection::release() noexcept
  38 {
  39     uno::Reference< uno::XInterface > x( xDelegator );
  40     if (! x.is())
  41     {
  42         if (osl_atomic_decrement( &m_refCount ) == 0)
  43         {
  44             if (! bDisposed)
  45             {
  46                 uno::Reference< uno::XInterface > xHoldAlive( getXWeak() );
  47                 // First dispose
  48                 try
  49                 {
  50                     dispose();
  51                 }
  52                 catch(css::uno::Exception&)
  53                 {
  54                     // release should not throw exceptions
  55                 }
  56
  57                 // only the alive ref holds the object
  58                 OSL_ASSERT( m_refCount == 1 );
  59                 // destroy the object if xHoldAlive decrement the refcount to 0
  60                 return;
  61             }
  62         }
  63         // restore the reference count
  64         osl_atomic_increment( &m_refCount );
  65     }
  66     OWeakAggObject::release();
  67 }
  68
  69 // XComponent
  70 void SvxShapeCollection::dispose()
  71 {
  72     // An frequently programming error is to release the last
  73     // reference to this object in the disposing message.
  74     // Make it robust, hold a self Reference.
  75     uno::Reference< lang::XComponent > xSelf( this );
  76
  77     // Guard dispose against multiple threading
  78     // Remark: It is an error to call dispose more than once
  79     {
  80         std::unique_lock aGuard( m_aMutex );
  81         if( bDisposed || bInDispose )
  82             return;
  83         // only one call go into this section
  84         bInDispose = true;
  85     }
  86
  87     // Do not hold the mutex because we are broadcasting
  88     // Create an event with this as sender
  89     try
  90     {
  91         document::EventObject aEvt;
  92         aEvt.Source = uno::Reference< uno::XInterface >::query( static_cast<lang::XComponent *>(this) );
  93         // inform all listeners to release this object
  94         // The listener container are automatically cleared
  95         std::unique_lock g(m_aMutex);
  96         maEventListeners.disposeAndClear( g, aEvt );
  97         maShapeContainer.clear();
  98
  99         // bDisposed and bInDispose must be set in this order.
 100         bDisposed = true;
 101         bInDispose = false;
 102     }
 103     catch(const css::uno::Exception&)
 104     {
 105         // catch exception and throw again but signal that
 106         // the object was disposed. Dispose should be called
 107         // only once.
 108         bDisposed = true;
 109         bInDispose = false;
 110         throw;
 111     }
 112 }
 113
 114 // XComponent
 115 void SAL_CALL SvxShapeCollection::addEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener )
 116 {
 117     std::unique_lock g(m_aMutex);
 118     maEventListeners.addInterface( g, aListener );
 119 }
 120
 121 // XComponent
 122 void SAL_CALL SvxShapeCollection::removeEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener )
 123 {
 124     std::unique_lock g(m_aMutex);
 125     maEventListeners.removeInterface( g, aListener );
 126 }
 127
 128 // XShapes
 129
 130 void SAL_CALL SvxShapeCollection::add( const Reference< drawing::XShape >& xShape )
 131 {
 132     std::unique_lock g(m_aMutex);
 133     maShapeContainer.push_back( xShape );
 134 }
 135
 136
 137 void SAL_CALL SvxShapeCollection::remove( const uno::Reference< drawing::XShape >& xShape )
 138 {
 139     std::unique_lock g(m_aMutex);
 140     std::erase(maShapeContainer, xShape);
 141 }
 142
 143
 144 sal_Int32 SAL_CALL SvxShapeCollection::getCount()
 145 {
 146     std::unique_lock g(m_aMutex);
 147     return maShapeContainer.size();
 148 }
 149
 150 uno::Any SAL_CALL SvxShapeCollection::getByIndex( sal_Int32 Index )
 151 {
 152     if( Index < 0 || Index >= getCount() )
 153         throw lang::IndexOutOfBoundsException();
 154
 155     std::unique_lock g(m_aMutex);
 156     Reference<drawing::XShape> xShape = maShapeContainer[Index];
 157     return uno::Any( xShape );
 158 }
 159
 160 std::vector<css::uno::Reference<css::drawing::XShape>> SvxShapeCollection::getAllShapes() const
 161 {
 162     std::unique_lock g(m_aMutex);
 163     return maShapeContainer;
 164 }
 165
 166 // XElementAccess
 167 uno::Type SAL_CALL SvxShapeCollection::getElementType()
 168 {
 169     return cppu::UnoType<drawing::XShape>::get();
 170 }
 171
 172 sal_Bool SAL_CALL SvxShapeCollection::hasElements()
 173 {
 174     return getCount() != 0;
 175 }
 176
 177 // XServiceInfo
 178 OUString SAL_CALL SvxShapeCollection::getImplementationName()
 179 {
 180     return u"com.sun.star.drawing.SvxShapeCollection"_ustr;
 181 }
 182
 183 sal_Bool SAL_CALL SvxShapeCollection::supportsService( const OUString& ServiceName )
 184 {
 185     return cppu::supportsService( this, ServiceName);
 186 }
 187
 188 uno::Sequence< OUString > SAL_CALL SvxShapeCollection::getSupportedServiceNames()
 189 {
 190     return { u"com.sun.star.drawing.Shapes"_ustr, u"com.sun.star.drawing.ShapeCollection"_ustr };
 191 }
 192
 193 extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
 194 com_sun_star_drawing_SvxShapeCollection_get_implementation(
 195     css::uno::XComponentContext *,
 196     css::uno::Sequence<css::uno::Any> const &)
 197 {
 198     return cppu::acquire(new SvxShapeCollection);
 199 }
 200
 201 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */