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| -rw-r--r-- | framework/source/helper/ocomponentaccess.cxx | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/framework/source/helper/ocomponentaccess.cxx b/framework/source/helper/ocomponentaccess.cxx new file mode 100644 index 000000000..b814fc49b --- /dev/null +++ b/framework/source/helper/ocomponentaccess.cxx @@ -0,0 +1,168 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#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 ); + OComponentEnumeration* pEnumeration = new OComponentEnumeration( seqComponents ); + xReturn.set( static_cast<OWeakObject*>(pEnumeration), UNO_QUERY ); + } + + // 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 + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |