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| -rw-r--r-- | toolkit/source/controls/accessiblecontrolcontext.cxx | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/toolkit/source/controls/accessiblecontrolcontext.cxx b/toolkit/source/controls/accessiblecontrolcontext.cxx new file mode 100644 index 000000000..219b4a610 --- /dev/null +++ b/toolkit/source/controls/accessiblecontrolcontext.cxx @@ -0,0 +1,358 @@ +/* -*- 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 <controls/accessiblecontrolcontext.hxx> +#include <unotools/accessiblestatesethelper.hxx> +#include <com/sun/star/awt/XControl.hpp> +#include <com/sun/star/awt/XWindow.hpp> +#include <com/sun/star/beans/XPropertySet.hpp> +#include <com/sun/star/lang/IndexOutOfBoundsException.hpp> +#include <vcl/svapp.hxx> +#include <com/sun/star/accessibility/AccessibleStateType.hpp> +#include <com/sun/star/accessibility/AccessibleRole.hpp> +#include <toolkit/helper/vclunohelper.hxx> +#include <tools/diagnose_ex.h> +#include <vcl/window.hxx> + + +namespace toolkit +{ + + + using ::comphelper::OContextEntryGuard; + using namespace ::com::sun::star; + using namespace ::com::sun::star::uno; + using namespace ::com::sun::star::lang; + using namespace ::com::sun::star::beans; + using namespace ::com::sun::star::accessibility; + + + //= OAccessibleControlContext + + + OAccessibleControlContext::OAccessibleControlContext() + { + // nothing to do here, we have a late ctor + } + + + OAccessibleControlContext::~OAccessibleControlContext() + { + ensureDisposed(); + } + + + // (order matters: the first is the class name, the second is the class doing the ref counting) + IMPLEMENT_FORWARD_XINTERFACE3( OAccessibleControlContext, OAccessibleControlContext_Base, OAccessibleImplementationAccess, OAccessibleControlContext_IBase ) + css::uno::Sequence< css::uno::Type > SAL_CALL OAccessibleControlContext::getTypes() + { + return ::comphelper::concatSequences( + OAccessibleControlContext_Base::getTypes(), + OAccessibleImplementationAccess::getTypes(), + OAccessibleControlContext_IBase::getTypes() + ); + } + IMPLEMENT_GET_IMPLEMENTATION_ID( OAccessibleControlContext ) + + + void OAccessibleControlContext::Init( const Reference< XAccessible >& _rxCreator ) + { + OContextEntryGuard aGuard( this ); + + // retrieve the model of the control + OSL_ENSURE( !m_xControlModel.is(), "OAccessibleControlContext::Init: already know a control model...!???" ); + + Reference< awt::XControl > xControl( _rxCreator, UNO_QUERY ); + if ( xControl.is() ) + m_xControlModel.set(xControl->getModel(), css::uno::UNO_QUERY); + OSL_ENSURE( m_xControlModel.is(), "OAccessibleControlContext::Init: invalid creator (no control, or control without model!" ); + if ( !m_xControlModel.is() ) + throw DisposedException(); // caught by the caller (the create method) + + // start listening at the model + startModelListening(); + + // announce the XAccessible to our base class + OAccessibleControlContext_Base::lateInit( _rxCreator ); + } + + + rtl::Reference<OAccessibleControlContext> OAccessibleControlContext::create( const Reference< XAccessible >& _rxCreator ) + { + rtl::Reference<OAccessibleControlContext> pNew; + try + { + pNew = new OAccessibleControlContext; + pNew->Init( _rxCreator ); + } + catch( const Exception& ) + { + TOOLS_WARN_EXCEPTION( "toolkit", "OAccessibleControlContext::create: caught an exception from the late ctor!" ); + } + return pNew; + } + + + void OAccessibleControlContext::startModelListening( ) + { + Reference< XComponent > xModelComp( m_xControlModel, UNO_QUERY ); + OSL_ENSURE( xModelComp.is(), "OAccessibleControlContext::startModelListening: invalid model!" ); + if ( xModelComp.is() ) + xModelComp->addEventListener( this ); + } + + + void OAccessibleControlContext::stopModelListening( ) + { + Reference< XComponent > xModelComp( m_xControlModel, UNO_QUERY ); + OSL_ENSURE( xModelComp.is(), "OAccessibleControlContext::stopModelListening: invalid model!" ); + if ( xModelComp.is() ) + xModelComp->removeEventListener( this ); + } + + + sal_Int32 SAL_CALL OAccessibleControlContext::getAccessibleChildCount( ) + { + // we do not have children + return 0; + } + + + Reference< XAccessible > SAL_CALL OAccessibleControlContext::getAccessibleChild( sal_Int32 ) + { + // we do not have children + throw IndexOutOfBoundsException(); + } + + + Reference< XAccessible > SAL_CALL OAccessibleControlContext::getAccessibleParent( ) + { + return Reference< XAccessible >(); + } + + + sal_Int16 SAL_CALL OAccessibleControlContext::getAccessibleRole( ) + { + return AccessibleRole::SHAPE; + } + + + OUString SAL_CALL OAccessibleControlContext::getAccessibleDescription( ) + { + OContextEntryGuard aGuard( this ); + return getModelStringProperty( "HelpText" ); + } + + + OUString SAL_CALL OAccessibleControlContext::getAccessibleName( ) + { + OContextEntryGuard aGuard( this ); + return getModelStringProperty( "Name" ); + } + + + Reference< XAccessibleRelationSet > SAL_CALL OAccessibleControlContext::getAccessibleRelationSet( ) + { + return nullptr; + } + + + Reference< XAccessibleStateSet > SAL_CALL OAccessibleControlContext::getAccessibleStateSet( ) + { + ::osl::MutexGuard aGuard( GetMutex() ); + // no OContextEntryGuard here, as we do not want to throw an exception in case we're not alive anymore + + rtl::Reference<::utl::AccessibleStateSetHelper> pStateSet; + if ( isAlive() ) + { + // no own states, only the ones which are foreign controlled + pStateSet = new ::utl::AccessibleStateSetHelper( 0 ); + } + else + { // only the DEFUNC state if we're already disposed + pStateSet = new ::utl::AccessibleStateSetHelper; + pStateSet->AddState( AccessibleStateType::DEFUNC ); + } + return pStateSet; + } + + + void SAL_CALL OAccessibleControlContext::disposing( const EventObject& _rSource ) + { + OSL_ENSURE( Reference< XPropertySet >( _rSource.Source, UNO_QUERY ).get() == m_xControlModel.get(), + "OAccessibleControlContext::disposing: where did this come from?" ); + + stopModelListening( ); + m_xControlModel.clear(); + m_xModelPropsInfo.clear(); + + OAccessibleControlContext_Base::disposing(); + } + + + OUString OAccessibleControlContext::getModelStringProperty( const char* _pPropertyName ) + { + OUString sReturn; + try + { + if ( !m_xModelPropsInfo.is() && m_xControlModel.is() ) + m_xModelPropsInfo = m_xControlModel->getPropertySetInfo(); + + OUString sPropertyName( OUString::createFromAscii( _pPropertyName ) ); + if ( m_xModelPropsInfo.is() && m_xModelPropsInfo->hasPropertyByName( sPropertyName ) ) + m_xControlModel->getPropertyValue( sPropertyName ) >>= sReturn; + } + catch( const Exception& ) + { + TOOLS_WARN_EXCEPTION( "toolkit", "OAccessibleControlContext::getModelStringProperty" ); + } + return sReturn; + } + + + vcl::Window* OAccessibleControlContext::implGetWindow( Reference< awt::XWindow >* _pxUNOWindow ) const + { + Reference< awt::XControl > xControl( getAccessibleCreator(), UNO_QUERY ); + Reference< awt::XWindow > xWindow; + if ( xControl.is() ) + xWindow.set(xControl->getPeer(), css::uno::UNO_QUERY); + + vcl::Window* pWindow = xWindow.is() ? VCLUnoHelper::GetWindow( xWindow ) : nullptr; + + if ( _pxUNOWindow ) + *_pxUNOWindow = xWindow; + + return pWindow; + } + + + awt::Rectangle OAccessibleControlContext::implGetBounds( ) + { + SolarMutexGuard aSolarGuard; + // want to do some VCL stuff here ... + OContextEntryGuard aGuard( this ); + + OSL_FAIL( "OAccessibleControlContext::implGetBounds: performance issue: forced to calc the size myself!" ); + // In design mode (and this is what this class is for), the surrounding shape (if any) should handle this call + // The problem is that in design mode, our size may not be correct (in the drawing layer, controls are + // positioned/sized for painting only), and that calculation of our position is expensive + + // what we know (or can obtain from somewhere): + // * the PosSize of our peer, relative to its parent window + // * the parent window which the PosSize is relative to + // * our foreign controlled accessible parent + // from this info, we can determine the position of our peer relative to the foreign parent + + // our control + Reference< awt::XWindow > xWindow; + VclPtr< vcl::Window > pVCLWindow = implGetWindow( &xWindow ); + + awt::Rectangle aBounds( 0, 0, 0, 0 ); + if ( xWindow.is() ) + { + // ugly, but... though the XWindow has a getPosSize, it is impossible to determine the + // parent which this position/size is relative to. This means we must tunnel UNO and ask the + // implementation + vcl::Window* pVCLParent = pVCLWindow ? pVCLWindow->GetParent() : nullptr; + + // the relative location of the window + ::Point aWindowRelativePos( 0, 0); + if ( pVCLWindow ) + aWindowRelativePos = pVCLWindow->GetPosPixel(); + + // the screen position of the "window parent" of the control + ::Point aVCLParentScreenPos( 0, 0 ); + if ( pVCLParent ) + aVCLParentScreenPos = pVCLParent->GetPosPixel(); + + // now the size of the control + aBounds = xWindow->getPosSize(); + + // correct the pos + aBounds.X = aWindowRelativePos.X() + aVCLParentScreenPos.X(); + aBounds.Y = aWindowRelativePos.Y() + aVCLParentScreenPos.Y(); + } + + return aBounds; + } + + + Reference< XAccessible > SAL_CALL OAccessibleControlContext::getAccessibleAtPoint( const awt::Point& /* _rPoint */ ) + { + // no children at all + return nullptr; + } + + + void SAL_CALL OAccessibleControlContext::grabFocus( ) + { + OSL_FAIL( "OAccessibleControlContext::grabFocus: !isFocusTraversable, but grabFocus!" ); + } + + + sal_Int32 SAL_CALL OAccessibleControlContext::getForeground( ) + { + SolarMutexGuard aSolarGuard; + // want to do some VCL stuff here ... + OContextEntryGuard aGuard( this ); + + VclPtr< vcl::Window > pWindow = implGetWindow(); + Color nColor; + if ( pWindow ) + { + if ( pWindow->IsControlForeground() ) + nColor = pWindow->GetControlForeground(); + else + { + vcl::Font aFont; + if ( pWindow->IsControlFont() ) + aFont = pWindow->GetControlFont(); + else + aFont = pWindow->GetFont(); + nColor = aFont.GetColor(); + } + } + return sal_Int32(nColor); + } + + + sal_Int32 SAL_CALL OAccessibleControlContext::getBackground( ) + { + SolarMutexGuard aSolarGuard; + // want to do some VCL stuff here ... + OContextEntryGuard aGuard( this ); + + VclPtr< vcl::Window > pWindow = implGetWindow(); + Color nColor; + if ( pWindow ) + { + if ( pWindow->IsControlBackground() ) + nColor = pWindow->GetControlBackground(); + else + nColor = pWindow->GetBackground().GetColor(); + } + + return sal_Int32(nColor); + } + + +} //namespace toolkit + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |