sc/source/ui/unoobj/listenercalls.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_sc.hxx"
  33
  34
  35
  36 #include <com/sun/star/util/XModifyListener.hpp>
  37 #include <tools/debug.hxx>
  38
  39 #include "listenercalls.hxx"
  40
  41 using namespace com::sun::star;
  42
  43 //------------------------------------------------------------------------
  44
  45 ScUnoListenerCalls::ScUnoListenerCalls()
  46 {
  47 }
  48
  49 ScUnoListenerCalls::~ScUnoListenerCalls()
  50 {
  51     DBG_ASSERT( aEntries.empty(), "unhandled listener calls remaining" );
  52 }
  53
  54 void ScUnoListenerCalls::Add( const uno::Reference<util::XModifyListener>& rListener,
  55                                 const lang::EventObject& rEvent )
  56 {
  57     if ( rListener.is() )
  58         aEntries.push_back( ScUnoListenerEntry( rListener, rEvent ) );
  59 }
  60
  61 void ScUnoListenerCalls::ExecuteAndClear()
  62 {
  63     //  Execute all stored calls and remove them from the list.
  64     //  During each modified() call, Add may be called again.
  65     //  These new calls are executed here, too.
  66
  67     if (!aEntries.empty())
  68     {
  69         std::list<ScUnoListenerEntry>::iterator aItr(aEntries.begin());
  70         std::list<ScUnoListenerEntry>::iterator aEndItr(aEntries.end());
  71         while ( aItr != aEndItr )
  72         {
  73             ScUnoListenerEntry aEntry = *aItr;
  74             try
  75             {
  76                 aEntry.xListener->modified( aEntry.aEvent );
  77             }
  78             catch ( uno::RuntimeException )
  79             {
  80                 // the listener is an external object and may throw a RuntimeException
  81                 // for reasons we don't know
  82             }
  83
  84             //  New calls that are added during the modified() call are appended to the end
  85             //  of aEntries, so the loop will catch them, too (as long as erase happens
  86             //  after modified).
  87
  88             aItr = aEntries.erase(aItr);
  89         }
  90     }
  91 }
  92