svx/source/accessibility/AccessibleTextEventQueue.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
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  19
  20 #ifndef INCLUDED_SVX_SOURCE_ACCESSIBILITY_ACCESSIBLETEXTEVENTQUEUE_HXX
  21 #define INCLUDED_SVX_SOURCE_ACCESSIBILITY_ACCESSIBLETEXTEVENTQUEUE_HXX
  22
  23 #include <memory>
  24 #include <list>
  25 #include <algorithm>
  26 #include <tools/rtti.hxx>
  27
  28 class SfxHint;
  29 class SdrHint;
  30 class TextHint;
  31 class SvxViewHint;
  32 class SvxEditSourceHint;
  33
  34 namespace accessibility
  35 {
  36     /** This class handles the notification events for the
  37         AccessibleTextHelper class.
  38
  39         For various reasons, we cannot process EditEngine events as
  40         they arrive, but have to queue and handle them in a batch.
  41      */
  42     class AccessibleTextEventQueue
  43     {
  44     public:
  45         typedef ::std::list< SfxHint* > EventQueue;
  46
  47         AccessibleTextEventQueue();
  48         ~AccessibleTextEventQueue();
  49
  50         /// Append event to end of queue
  51         void Append( const SdrHint& rHint );
  52         /// Append event to end of queue
  53         void Append( const TextHint& rHint );
  54         /// Append event to end of queue
  55         void Append( const SvxViewHint& rHint );
  56         /// Append event to end of queue
  57         void Append( const SvxEditSourceHint& rHint );
  58
  59         /** Pop first queue element
  60
  61             return first queue element, ownership transfers to caller
  62         */
  63         ::std::auto_ptr< SfxHint > PopFront();
  64
  65         /** Apply functor to every queue member
  66
  67             @param rFunctor
  68             Functor to apply. Functor receives queue element as
  69             parameter: void func( const SfxHint* );
  70         */
  71         template < typename Functor > void ForEach( Functor& rFunctor ) const
  72         {
  73             // #109864# Make sure results are put back into rFunctor
  74             rFunctor = ::std::for_each( maEventQueue.begin(), maEventQueue.end(), rFunctor );
  75         }
  76
  77         /// Query whether queue is empty
  78         bool IsEmpty() const;
  79
  80         /// Clear event queue
  81         void Clear();
  82
  83     private:
  84         EventQueue maEventQueue;
  85     };
  86
  87 } // end of namespace accessibility
  88
  89 #endif // INCLUDED_SVX_SOURCE_ACCESSIBILITY_ACCESSIBLETEXTEVENTQUEUE_HXX
  90
  91 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */