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Diffstat (limited to 'winaccessibility/source/service/AccTopWindowListener.cxx')
| -rw-r--r-- | winaccessibility/source/service/AccTopWindowListener.cxx | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/winaccessibility/source/service/AccTopWindowListener.cxx b/winaccessibility/source/service/AccTopWindowListener.cxx new file mode 100644 index 000000000..a828c36c0 --- /dev/null +++ b/winaccessibility/source/service/AccTopWindowListener.cxx @@ -0,0 +1,254 @@ +/* -*- 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 <sal/log.hxx> +#include <vcl/window.hxx> +#include <toolkit/awt/vclxaccessiblecomponent.hxx> +#include <toolkit/awt/vclxwindow.hxx> + +#include <vcl/sysdata.hxx> +#include <vcl/svapp.hxx> + +#include <AccTopWindowListener.hxx> +#include <unomsaaevent.hxx> + +#include <com/sun/star/accessibility/AccessibleRole.hpp> + +using namespace com::sun::star::uno; + +/** + * For the new opened window, generate all the UNO accessible's object, COM object and add + * accessible listener to monitor all these objects. + * @param pAccessible the accessible of the new opened window + */ +void AccTopWindowListener::HandleWindowOpened( css::accessibility::XAccessible* pAccessible ) +{ + //get SystemData from window + VclPtr<vcl::Window> window; + if (auto pvclwindow = dynamic_cast<VCLXWindow*>(pAccessible)) + window = pvclwindow->GetWindow(); + else if (auto pvclxcomponent = dynamic_cast<VCLXAccessibleComponent*>(pAccessible)) + window = pvclxcomponent->GetWindow(); + assert(window); + // The SalFrame of window may be destructed at this time + const SystemEnvData* systemdata = nullptr; + try + { + systemdata = window->GetSystemData(); + } + catch(...) + { + systemdata = nullptr; + } + Reference<css::accessibility::XAccessibleContext> xContext = pAccessible->getAccessibleContext(); + if(!xContext.is()) + return; + + css::accessibility::XAccessibleContext* pAccessibleContext = xContext.get(); + //Only AccessibleContext exist, add all listeners + if(pAccessibleContext != nullptr && systemdata != nullptr) + { + accManagerAgent.SaveTopWindowHandle(systemdata->hWnd, pAccessible); + + AddAllListeners(pAccessible,nullptr,systemdata->hWnd); + + if( window->GetStyle() & WB_MOVEABLE ) + accManagerAgent.IncreaseState( pAccessible, static_cast<unsigned short>(-1) /* U_MOVEBLE */ ); + + short role = pAccessibleContext->getAccessibleRole(); + + if (role == css::accessibility::AccessibleRole::POPUP_MENU || + role == css::accessibility::AccessibleRole::MENU ) + { + accManagerAgent.NotifyAccEvent(UnoMSAAEvent::MENUPOPUPSTART, pAccessible); + } + + if (role == css::accessibility::AccessibleRole::FRAME || + role == css::accessibility::AccessibleRole::DIALOG || + role == css::accessibility::AccessibleRole::WINDOW || + role == css::accessibility::AccessibleRole::ALERT) + { + accManagerAgent.NotifyAccEvent(UnoMSAAEvent::SHOW, pAccessible); + } + } +} + +AccTopWindowListener::AccTopWindowListener() + : accManagerAgent() +{ +} + +AccTopWindowListener::~AccTopWindowListener() +{ +} + +/** + * It is invoked when a new window is opened, the source of this EventObject is the window + */ +void AccTopWindowListener::windowOpened( const css::lang::EventObject& e ) +{ + SAL_INFO( "iacc2", "windowOpened triggered" ); + + if ( !e.Source.is()) + return; + + Reference< css::accessibility::XAccessible > xAccessible ( e.Source, UNO_QUERY ); + css::accessibility::XAccessible* pAccessible = xAccessible.get(); + if ( !pAccessible ) + return; + + SolarMutexGuard g; + + HandleWindowOpened( pAccessible ); +} + +/** + * Add the accessible event listener to object and all its children objects. + * @param pAccessible the accessible object + * @param pParentXAcc the parent of current accessible object + * @param pWND the handle of top window which current object resides + */ +void AccTopWindowListener::AddAllListeners(css::accessibility::XAccessible* pAccessible, css::accessibility::XAccessible* pParentXAcc, HWND pWND) +{ + Reference<css::accessibility::XAccessibleContext> xContext = pAccessible->getAccessibleContext(); + if(!xContext.is()) + { + return; + } + css::accessibility::XAccessibleContext* pAccessibleContext = xContext.get(); + if(pAccessibleContext == nullptr) + { + return; + } + + accManagerAgent.InsertAccObj(pAccessible, pParentXAcc, pWND); + + if (!accManagerAgent.IsContainer(pAccessible)) + { + return; + } + + + short role = pAccessibleContext->getAccessibleRole(); + if(css::accessibility::AccessibleRole::DOCUMENT == role || + css::accessibility::AccessibleRole::DOCUMENT_PRESENTATION == role || + css::accessibility::AccessibleRole::DOCUMENT_SPREADSHEET == role || + css::accessibility::AccessibleRole::DOCUMENT_TEXT == role) + { + if(accManagerAgent.IsStateManageDescendant(pAccessible)) + { + return ; + } + } + + + int count = pAccessibleContext->getAccessibleChildCount(); + for (int i=0;i<count;i++) + { + Reference<css::accessibility::XAccessible> mxAccessible + = pAccessibleContext->getAccessibleChild(i); + + css::accessibility::XAccessible* mpAccessible = mxAccessible.get(); + if(mpAccessible != nullptr) + { + Reference<css::accessibility::XAccessibleContext> mxAccessibleContext + = mpAccessible->getAccessibleContext(); + css::accessibility::XAccessibleContext* mpContext = mxAccessibleContext.get(); + if(mpContext != nullptr) + AddAllListeners( mpAccessible, pAccessible, pWND); + } + } +} + +void AccTopWindowListener::windowClosing( const css::lang::EventObject& ) +{ + SAL_INFO( "iacc2", "windowClosing triggered" ); +} + +/** + * Invoke this method when the top window is closed, remove all the objects and its children + * from current manager's cache, and remove the COM object and the accessible event listener + * assigned to the accessible objects. + */ +void AccTopWindowListener::windowClosed( const css::lang::EventObject& e ) +{ + SAL_INFO( "iacc2", "windowClosed triggered" ); + + if ( !e.Source.is()) + return; + + Reference< css::accessibility::XAccessible > xAccessible ( e.Source, UNO_QUERY ); + css::accessibility::XAccessible* pAccessible = xAccessible.get(); + if ( pAccessible == nullptr) + return; + + Reference<css::accessibility::XAccessibleContext> xContext = pAccessible->getAccessibleContext(); + if(!xContext.is()) + { + return; + } + css::accessibility::XAccessibleContext* pAccessibleContext = xContext.get(); + + short role = -1; + if(pAccessibleContext != nullptr) + { + role = pAccessibleContext->getAccessibleRole(); + + if (role == css::accessibility::AccessibleRole::POPUP_MENU || + role == css::accessibility::AccessibleRole::MENU) + { + accManagerAgent.NotifyAccEvent(UnoMSAAEvent::MENUPOPUPEND, pAccessible); + } + } + + + accManagerAgent.DeleteChildrenAccObj( pAccessible ); + if( role != css::accessibility::AccessibleRole::POPUP_MENU ) + accManagerAgent.DeleteAccObj( pAccessible ); + +} + +void AccTopWindowListener::windowMinimized( const css::lang::EventObject& ) +{ +} + +void AccTopWindowListener::windowNormalized( const css::lang::EventObject& ) +{ +} + +void AccTopWindowListener::windowActivated( const css::lang::EventObject& ) +{ +} + +void AccTopWindowListener::windowDeactivated( const css::lang::EventObject& ) +{ +} + +void AccTopWindowListener::disposing( const css::lang::EventObject& ) +{ +} + +sal_Int64 AccTopWindowListener::GetMSComPtr( + sal_Int64 hWnd, sal_Int64 lParam, sal_Int64 wParam) +{ + return accManagerAgent.Get_ToATInterface(hWnd, lParam, wParam); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |