ocomponentaccess.cxx

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#include <helper/ocomponentaccess.hxx>
#include <helper/ocomponentenumeration.hxx>
 
#include <com/sun/star/frame/FrameSearchFlag.hpp>
 
#include <vcl/svapp.hxx>
#include <sal/log.hxx>
 
namespace framework{
 
using namespace ::com::sun::star::container;
using namespace ::com::sun::star::frame;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::uno;
using namespace ::cppu;
using namespace ::osl;
 
//  constructor
 
OComponentAccess::OComponentAccess( const css::uno::Reference< XDesktop >& xOwner )
        :   m_xOwner        ( xOwner                        )
{
    // Safe impossible cases
    SAL_WARN_IF( !xOwner.is(), "fwk", "OComponentAccess::OComponentAccess(): Invalid parameter detected!" );
}
 
//  destructor
 
OComponentAccess::~OComponentAccess()
{
}
 
//  XEnumerationAccess
css::uno::Reference< XEnumeration > SAL_CALL OComponentAccess::createEnumeration()
{
    SolarMutexGuard g;
 
    // Set default return value, if method failed.
    // If no desktop exist and there is no task container - return an empty enumeration!
    css::uno::Reference< XEnumeration > xReturn;
 
    // Try to "lock" the desktop for access to task container.
    css::uno::Reference< XInterface > xLock = m_xOwner.get();
    if ( xLock.is() )
    {
        // Desktop exist => pointer to task container must be valid.
        // Initialize a new enumeration ... if some tasks and his components exist!
        // (OTasksEnumeration will make an assert, if we initialize the new instance without valid values!)
 
        std::vector< css::uno::Reference< XComponent > > seqComponents;
        impl_collectAllChildComponents( css::uno::Reference< XFramesSupplier >( xLock, UNO_QUERY ), seqComponents );
        xReturn = new OComponentEnumeration( std::move(seqComponents) );
    }
 
    // Return result of this operation.
    return xReturn;
}
 
//  XElementAccess
Type SAL_CALL OComponentAccess::getElementType()
{
    // Elements in list an enumeration are components!
    // Return the uno-type of XComponent.
    return cppu::UnoType<XComponent>::get();
}
 
//  XElementAccess
sal_Bool SAL_CALL OComponentAccess::hasElements()
{
    SolarMutexGuard g;
 
    // Set default return value, if method failed.
    bool bReturn = false;
 
    // Try to "lock" the desktop for access to task container.
    css::uno::Reference< XFramesSupplier > xLock( m_xOwner.get(), UNO_QUERY );
    if ( xLock.is() )
    {
        // Ask container of owner for existing elements.
        bReturn = xLock->getFrames()->hasElements();
    }
 
    // Return result of this operation.
    return bReturn;
}
 
 
void OComponentAccess::impl_collectAllChildComponents(  const css::uno::Reference< XFramesSupplier >&         xNode           ,
                                                               std::vector< css::uno::Reference< XComponent > >& seqComponents   )
{
    // If valid node was given ...
    if( !xNode.is() )
        return;
 
    // ... continue collection at these.
 
    // Get the container of current node, collect the components of existing child frames
    // and go down to next level in tree (recursive!).
 
    const css::uno::Reference< XFrames >                xContainer  = xNode->getFrames();
    const Sequence< css::uno::Reference< XFrame > > seqFrames   = xContainer->queryFrames( FrameSearchFlag::CHILDREN );
 
    const sal_Int32 nFrameCount = seqFrames.getLength();
    for( sal_Int32 nFrame=0; nFrame<nFrameCount; ++nFrame )
    {
        css::uno::Reference< XComponent > xComponent = impl_getFrameComponent( seqFrames[nFrame] );
        if( xComponent.is() )
        {
            seqComponents.push_back( xComponent );
        }
    }
    // ... otherwise break a recursive path and go back at current stack!
}
 
css::uno::Reference< XComponent > OComponentAccess::impl_getFrameComponent( const css::uno::Reference< XFrame >& xFrame ) const
{
    // Set default return value, if method failed.
    css::uno::Reference< XComponent > xComponent;
    // Does no controller exists?
    css::uno::Reference< XController > xController = xFrame->getController();
    if ( !xController.is() )
    {
        // Controller not exist - use the VCL-component.
        xComponent = xFrame->getComponentWindow();
    }
    else
    {
        // Does no model exists?
        css::uno::Reference< XModel > xModel = xController->getModel();
        if ( xModel.is() )
        {
            // Model exist - use the model as component.
            xComponent = xModel;
        }
        else
        {
            // Model not exist - use the controller as component.
            xComponent = xController;
        }
    }
 
    return xComponent;
}
 
 
}       //  namespace framework
 
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