226 lines
9.7 KiB
C++
226 lines
9.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <helper/ocomponentaccess.hxx>
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#include <helper/ocomponentenumeration.hxx>
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#include <threadhelp/resetableguard.hxx>
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#include <com/sun/star/frame/FrameSearchFlag.hpp>
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#include <vcl/svapp.hxx>
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namespace framework{
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using namespace ::com::sun::star::container ;
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using namespace ::com::sun::star::frame ;
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using namespace ::com::sun::star::lang ;
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using namespace ::com::sun::star::uno ;
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using namespace ::cppu ;
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using namespace ::osl ;
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using namespace ::rtl ;
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//*****************************************************************************************************************
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// constructor
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//*****************************************************************************************************************
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OComponentAccess::OComponentAccess( const css::uno::Reference< XDesktop >& xOwner )
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// Init baseclasses first
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: ThreadHelpBase ( &Application::GetSolarMutex() )
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// Init member
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, m_xOwner ( xOwner )
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{
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// Safe impossible cases
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LOG_ASSERT( impldbg_checkParameter_OComponentAccessCtor( xOwner ), "OComponentAccess::OComponentAccess()\nInvalid parameter detected!\n" )
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}
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//*****************************************************************************************************************
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// destructor
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//*****************************************************************************************************************
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OComponentAccess::~OComponentAccess()
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{
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}
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//*****************************************************************************************************************
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// XEnumerationAccess
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//*****************************************************************************************************************
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css::uno::Reference< XEnumeration > SAL_CALL OComponentAccess::createEnumeration() throw( RuntimeException )
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{
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// Ready for multithreading
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ResetableGuard aGuard( m_aLock );
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// Set default return value, if method failed.
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// If no desktop exist and there is no task container - return an empty enumeration!
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css::uno::Reference< XEnumeration > xReturn = css::uno::Reference< XEnumeration >();
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// Try to "lock" the desktop for access to task container.
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css::uno::Reference< XInterface > xLock = m_xOwner.get();
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if ( xLock.is() == sal_True )
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{
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// Desktop exist => pointer to task container must be valid.
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// Initialize a new enumeration ... if some tasks and his components exist!
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// (OTasksEnumeration will make an assert, if we initialize the new instance without valid values!)
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Sequence< css::uno::Reference< XComponent > > seqComponents;
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impl_collectAllChildComponents( css::uno::Reference< XFramesSupplier >( xLock, UNO_QUERY ), seqComponents );
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OComponentEnumeration* pEnumeration = new OComponentEnumeration( seqComponents );
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xReturn = css::uno::Reference< XEnumeration >( (OWeakObject*)pEnumeration, UNO_QUERY );
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}
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// Return result of this operation.
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return xReturn;
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}
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//*****************************************************************************************************************
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// XElementAccess
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//*****************************************************************************************************************
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Type SAL_CALL OComponentAccess::getElementType() throw( RuntimeException )
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{
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// Elements in list an enumeration are components!
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// Return the uno-type of XComponent.
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return ::getCppuType((const css::uno::Reference< XComponent >*)NULL);
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}
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//*****************************************************************************************************************
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// XElementAccess
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//*****************************************************************************************************************
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sal_Bool SAL_CALL OComponentAccess::hasElements() throw( RuntimeException )
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{
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// Ready for multithreading
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ResetableGuard aGuard( m_aLock );
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// Set default return value, if method failed.
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sal_Bool bReturn = sal_False;
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// Try to "lock" the desktop for access to task container.
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css::uno::Reference< XFramesSupplier > xLock( m_xOwner.get(), UNO_QUERY );
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if ( xLock.is() == sal_True )
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{
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// Ask container of owner for existing elements.
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bReturn = xLock->getFrames()->hasElements();
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}
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// Return result of this operation.
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return bReturn;
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}
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//*****************************************************************************************************************
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// private method
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//*****************************************************************************************************************
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void OComponentAccess::impl_collectAllChildComponents( const css::uno::Reference< XFramesSupplier >& xNode ,
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Sequence< css::uno::Reference< XComponent > >& seqComponents )
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{
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// If valid node was given ...
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if( xNode.is() == sal_True )
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{
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// ... continue collection at these.
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// Get the container of current node, collect the components of existing child frames
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// and go down to next level in tree (recursive!).
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sal_Int32 nComponentCount = seqComponents.getLength();
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const css::uno::Reference< XFrames > xContainer = xNode->getFrames();
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const Sequence< css::uno::Reference< XFrame > > seqFrames = xContainer->queryFrames( FrameSearchFlag::CHILDREN );
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const sal_Int32 nFrameCount = seqFrames.getLength();
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for( sal_Int32 nFrame=0; nFrame<nFrameCount; ++nFrame )
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{
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css::uno::Reference< XComponent > xComponent = impl_getFrameComponent( seqFrames[nFrame] );
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if( xComponent.is() == sal_True )
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{
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nComponentCount++;
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seqComponents.realloc( nComponentCount );
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seqComponents[nComponentCount-1] = xComponent;
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}
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}
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}
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// ... otherwise break a recursive path and go back at current stack!
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}
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//*****************************************************************************************************************
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// private method
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//*****************************************************************************************************************
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css::uno::Reference< XComponent > OComponentAccess::impl_getFrameComponent( const css::uno::Reference< XFrame >& xFrame ) const
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{
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// Set default return value, if method failed.
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css::uno::Reference< XComponent > xComponent = css::uno::Reference< XComponent >();
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// Does no controller exists?
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css::uno::Reference< XController > xController = xFrame->getController();
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if ( xController.is() == sal_False )
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{
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// Controller not exist - use the VCL-component.
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xComponent = css::uno::Reference< XComponent >( xFrame->getComponentWindow(), UNO_QUERY );
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}
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else
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{
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// Does no model exists?
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css::uno::Reference< XModel > xModel( xController->getModel(), UNO_QUERY );
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if ( xModel.is() == sal_True )
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{
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// Model exist - use the model as component.
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xComponent = css::uno::Reference< XComponent >( xModel, UNO_QUERY );
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}
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else
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{
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// Model not exist - use the controller as component.
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xComponent = css::uno::Reference< XComponent >( xController, UNO_QUERY );
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}
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}
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return xComponent;
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}
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//_________________________________________________________________________________________________________________
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// debug methods
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//_________________________________________________________________________________________________________________
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/*-----------------------------------------------------------------------------------------------------------------
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The follow methods checks the parameter for other functions. If a parameter or his value is non valid,
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we return "sal_False". (else sal_True) This mechanism is used to throw an ASSERT!
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ATTENTION
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If you miss a test for one of this parameters, contact the autor or add it himself !(?)
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But ... look for right testing! See using of this methods!
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-----------------------------------------------------------------------------------------------------------------*/
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#ifdef ENABLE_ASSERTIONS
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//*****************************************************************************************************************
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sal_Bool OComponentAccess::impldbg_checkParameter_OComponentAccessCtor( const css::uno::Reference< XDesktop >& xOwner )
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{
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// Set default return value.
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sal_Bool bOK = sal_True;
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// Check parameter.
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if (
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( &xOwner == NULL ) ||
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( xOwner.is() == sal_False )
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)
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{
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bOK = sal_False ;
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}
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// Return result of check.
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return bOK ;
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}
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#endif // #ifdef ENABLE_ASSERTIONS
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} // namespace framework
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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