forms/source/xforms/namedcollection.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   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 #pragma once
  21
  22 #include "collection.hxx"
  23 #include <cppuhelper/implbase.hxx>
  24 #include <comphelper/sequence.hxx>
  25 #include <com/sun/star/container/XNameAccess.hpp>
  26 #include <com/sun/star/container/XNamed.hpp>
  27
  28 #include <algorithm>
  29
  30 template<class T>
  31 class NamedCollection : public cppu::ImplInheritanceHelper<
  32                             Collection<T>,
  33                             css::container::XNameAccess>
  34 {
  35     using Collection<T>::maItems;
  36     using Collection<T>::getItem;
  37     using Collection<T>::hasItem;
  38
  39 public:
  40
  41     const T& getItem( const OUString& rName ) const
  42     {
  43         OSL_ENSURE( hasItem( rName ), "invalid name" );
  44         return *findItem( rName );
  45     }
  46
  47     bool hasItem( const OUString& rName ) const
  48     {
  49         return findItem( rName ) != maItems.end();
  50     }
  51
  52     css::uno::Sequence<OUString> getNames() const
  53     {
  54         // iterate over members, and collect all those that have names
  55         std::vector<OUString> aNames;
  56         for( const T& rItem : maItems )
  57         {
  58             css::uno::Reference<css::container::XNamed>
  59                 xNamed( rItem, css::uno::UNO_QUERY );
  60             if( xNamed.is() )
  61                 aNames.push_back( xNamed->getName() );
  62         }
  63
  64         return comphelper::containerToSequence(aNames);
  65     }
  66
  67 protected:
  68     typename std::vector<T>::const_iterator findItem( const OUString& rName ) const
  69     {
  70         return std::find_if(maItems.begin(), maItems.end(), [&rName](const T& rItem) {
  71             css::uno::Reference<css::container::XNamed>
  72                 xNamed( rItem, css::uno::UNO_QUERY );
  73             return xNamed.is() && xNamed->getName() == rName;
  74         });
  75     }
  76
  77 public:
  78
  79     // XElementAccess
  80     virtual css::uno::Type SAL_CALL getElementType() override
  81     {
  82         return Collection<T>::getElementType();
  83     }
  84
  85     virtual sal_Bool SAL_CALL hasElements() override
  86     {
  87         return Collection<T>::hasElements();
  88     }
  89
  90     // XNameAccess : XElementAccess
  91     virtual css::uno::Any SAL_CALL getByName(
  92         const OUString& aName ) override
  93     {
  94         if( !hasItem( aName ) )
  95             throw css::container::NoSuchElementException();
  96         return css::uno::Any( getItem( aName ) );
  97     }
  98
  99     virtual css::uno::Sequence<OUString> SAL_CALL getElementNames() override
 100     {
 101         return getNames();
 102     }
 103
 104     virtual sal_Bool SAL_CALL hasByName(
 105         const OUString& aName ) override
 106     {
 107         return hasItem( aName );
 108     }
 109 };
 110
 111 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */