canvas/source/tools/propertysethelper.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
  21 #include <canvas/propertysethelper.hxx>
  22
  23 using namespace ::com::sun::star;
  24
  25 namespace canvas
  26 {
  27     namespace
  28     {
  29         void throwUnknown( const OUString& aPropertyName )
  30         {
  31             throw beans::UnknownPropertyException(
  32                 "PropertySetHelper: property " +
  33                 aPropertyName + " not found."
  34                 );
  35         }
  36
  37         void throwVeto( const OUString& aPropertyName )
  38         {
  39             throw beans::PropertyVetoException(
  40                 "PropertySetHelper: property " +
  41                 aPropertyName + " access was vetoed." );
  42         }
  43
  44         struct EntryComparator
  45         {
  46             bool operator()( const PropertySetHelper::MapType::MapEntry& rLHS,
  47                              const PropertySetHelper::MapType::MapEntry& rRHS )
  48             {
  49                 return strcmp( rLHS.maKey,
  50                                rRHS.maKey ) < 0;
  51             }
  52         };
  53     }
  54
  55     PropertySetHelper::PropertySetHelper() :
  56         mpMap(),
  57         maMapEntries()
  58     {
  59     }
  60
  61     void PropertySetHelper::initProperties( const InputMap& rMap )
  62     {
  63         mpMap.reset();
  64         maMapEntries = rMap;
  65
  66         std::sort( maMapEntries.begin(),
  67                    maMapEntries.end(),
  68                    EntryComparator() );
  69
  70         if( !maMapEntries.empty() )
  71             mpMap.reset( new MapType(&maMapEntries[0],
  72                                      maMapEntries.size(),
  73                                      true) );
  74     }
  75
  76     void PropertySetHelper::addProperties( const InputMap& rMap )
  77     {
  78         InputMap aMerged( getPropertyMap() );
  79         aMerged.insert( aMerged.end(),
  80                         rMap.begin(),
  81                         rMap.end() );
  82
  83         initProperties( aMerged );
  84     }
  85
  86     bool PropertySetHelper::isPropertyName( const OUString& aPropertyName ) const
  87     {
  88         if( !mpMap.get() )
  89             return false;
  90
  91         Callbacks aDummy;
  92         return mpMap->lookup( aPropertyName,
  93                               aDummy );
  94     }
  95
  96     uno::Reference< beans::XPropertySetInfo > PropertySetHelper::getPropertySetInfo() const
  97     {
  98         // we're a stealth property set
  99         return uno::Reference< beans::XPropertySetInfo >();
 100     }
 101
 102     void PropertySetHelper::setPropertyValue( const OUString& aPropertyName,
 103                                               const uno::Any&        aValue )
 104     {
 105         Callbacks aCallbacks;
 106         if( !mpMap.get() ||
 107             !mpMap->lookup( aPropertyName,
 108                             aCallbacks ) )
 109         {
 110             throwUnknown( aPropertyName );
 111         }
 112
 113         if( aCallbacks.setter.empty() )
 114             throwVeto( aPropertyName );
 115
 116         aCallbacks.setter(aValue);
 117     }
 118
 119     uno::Any PropertySetHelper::getPropertyValue( const OUString& aPropertyName ) const
 120     {
 121         Callbacks aCallbacks;
 122         if( !mpMap.get() ||
 123             !mpMap->lookup( aPropertyName,
 124                             aCallbacks ) )
 125         {
 126             throwUnknown( aPropertyName );
 127         }
 128
 129         if( !aCallbacks.getter.empty() )
 130             return aCallbacks.getter();
 131
 132         // TODO(Q1): subtlety, empty getter method silently returns
 133         // the empty any
 134         return uno::Any();
 135     }
 136
 137     void PropertySetHelper::addPropertyChangeListener( const OUString&                                  aPropertyName,
 138                                                        const uno::Reference< beans::XPropertyChangeListener >& /*xListener*/ )
 139     {
 140         // check validity of property, but otherwise ignore the
 141         // request
 142         if( !isPropertyName( aPropertyName ) )
 143             throwUnknown( aPropertyName );
 144     }
 145
 146     void PropertySetHelper::addVetoableChangeListener( const OUString&                                  aPropertyName,
 147                                                        const uno::Reference< beans::XVetoableChangeListener >& /*xListener*/ )
 148     {
 149         // check validity of property, but otherwise ignore the
 150         // request
 151         if( !isPropertyName( aPropertyName ) )
 152             throwUnknown( aPropertyName );
 153     }
 154
 155 }
 156
 157 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */