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| -rw-r--r-- | sfx2/inc/preventduplicateinteraction.hxx | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/sfx2/inc/preventduplicateinteraction.hxx b/sfx2/inc/preventduplicateinteraction.hxx new file mode 100644 index 000000000..62e59dd96 --- /dev/null +++ b/sfx2/inc/preventduplicateinteraction.hxx @@ -0,0 +1,329 @@ +/* -*- 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 . + */ + +#ifndef INCLUDED_FRAMEWORK_PREVENTDUPLICATEINTERACTION_HXX +#define INCLUDED_FRAMEWORK_PREVENTDUPLICATEINTERACTION_HXX + +#include <vector> + +#include <com/sun/star/frame/Desktop.hpp> +#include <com/sun/star/frame/TerminationVetoException.hpp> +#include <com/sun/star/lang/XInitialization.hpp> +#include <com/sun/star/task/XInteractionHandler2.hpp> +#include <com/sun/star/task/XInteractionRequest.hpp> + +#include <comphelper/compbase.hxx> +#include <cppuhelper/implbase.hxx> + +#include <toolkit/helper/vclunohelper.hxx> +#include <vcl/wrkwin.hxx> +#include <vcl/svapp.hxx> +#include <mutex> + +namespace com::sun::star::uno { + class XComponentContext; +} + +namespace sfx2 { + +inline void closedialogs(SystemWindow& rTopLevel, bool bCloseRoot) +{ + for (vcl::Window *pChild = rTopLevel.GetWindow(GetWindowType::FirstTopWindowChild); pChild; pChild = rTopLevel.GetWindow(GetWindowType::NextTopWindowSibling)) + closedialogs(dynamic_cast<SystemWindow&>(*pChild), true); + if (bCloseRoot) + rTopLevel.Close(); +} + +// This is intended to be the parent for any warning dialogs launched +// during the load of a document so that those dialogs are modal to +// this window and don't block any existing windows. +// +// If there are dialog children open on exit then veto termination, +// close the topmost dialog and retry termination. +class WarningDialogsParent final : + public comphelper::WeakComponentImplHelper<css::frame::XTerminateListener> +{ +private: + VclPtr<WorkWindow> m_xWin; + css::uno::Reference<css::awt::XWindow> m_xInterface; + +private: + + DECL_STATIC_LINK(WarningDialogsParent, TerminateDesktop, void*, void); + + void closewarningdialogs() + { + if (!m_xWin) + return; + SolarMutexGuard aSolarGuard; + closedialogs(dynamic_cast<SystemWindow&>(*m_xWin), false); + } + +public: + + using comphelper::WeakComponentImplHelperBase::disposing; + virtual void SAL_CALL disposing(const css::lang::EventObject&) override + { + } + + // XTerminateListener + virtual void SAL_CALL queryTermination(const css::lang::EventObject&) override + { + closewarningdialogs(); + Application::PostUserEvent(LINK(this, WarningDialogsParent, TerminateDesktop)); + throw css::frame::TerminationVetoException(); + } + + virtual void SAL_CALL notifyTermination(const css::lang::EventObject&) override + { + } + +public: + WarningDialogsParent() + { + SolarMutexGuard aSolarGuard; + m_xWin = VclPtr<WorkWindow>::Create(nullptr, WB_STDWORK); + m_xWin->SetText("dialog parent for warning dialogs during load"); + m_xInterface = VCLUnoHelper::GetInterface(m_xWin); + } + + virtual ~WarningDialogsParent() override + { + closewarningdialogs(); + m_xWin.disposeAndClear(); + } + + const css::uno::Reference<css::awt::XWindow>& GetDialogParent() const + { + return m_xInterface; + } +}; + +class WarningDialogsParentScope +{ +private: + css::uno::Reference<css::frame::XDesktop> m_xDesktop; + rtl::Reference<WarningDialogsParent> m_xListener; + +public: + WarningDialogsParentScope(const css::uno::Reference<css::uno::XComponentContext>& rContext) + : m_xDesktop(css::frame::Desktop::create(rContext), css::uno::UNO_QUERY_THROW) + , m_xListener(new WarningDialogsParent) + { + m_xDesktop->addTerminateListener(m_xListener); + } + + const css::uno::Reference<css::awt::XWindow>& GetDialogParent() const + { + return m_xListener->GetDialogParent(); + } + + ~WarningDialogsParentScope() + { + m_xDesktop->removeTerminateListener(m_xListener); + } +}; + +/** + @short Prevent us from showing the same interaction more than once during + the same transaction. + + @descr Every interaction provided to this helper will be safed ... handled by the internal + used UUIInteractionHandler (!) and never be handled a second time! + + On the other side there exists some interactions, which allow a retry. + So this helper allow to set a list of interactions combined with a retry value. + */ +class PreventDuplicateInteraction final : + public ::cppu::WeakImplHelper<css::lang::XInitialization, css::task::XInteractionHandler2> +{ + mutable std::mutex m_aLock; + + // structs, types etc. + public: + + struct InteractionInfo + { + public: + /// describe the interaction. + css::uno::Type m_aInteraction; + /// after max count was reached this interaction will be blocked. + sal_Int32 m_nMaxCount; + /// count how often this interaction was called. + sal_Int32 m_nCallCount; + /** hold the last intercepted request (matching the set interaction type) alive + so it can be used for further checks */ + css::uno::Reference< css::task::XInteractionRequest > m_xRequest; + + public: + + InteractionInfo(const css::uno::Type& aInteraction) + : m_aInteraction(aInteraction) + , m_nMaxCount (1 ) + , m_nCallCount (0 ) + {} + }; + + // member + private: + + /// Used to create needed uno services at runtime. + css::uno::Reference< css::uno::XComponentContext > m_xContext; + + /** The outside interaction handler, which is used to handle every incoming interaction, + if it's not blocked. */ + css::uno::Reference< css::task::XInteractionHandler > m_xHandler; + + std::unique_ptr<WarningDialogsParentScope> m_xWarningDialogsParent; + + /** This list describe which and how incoming interactions must be handled. + Further it contains all collected information after this interaction + object was used.*/ + std::vector< InteractionInfo > m_lInteractionRules; + + + // uno interface + public: + + virtual void SAL_CALL initialize(const css::uno::Sequence<css::uno::Any>& rArguments) override; + + /** + @interface XInteractionHandler + @short called from outside to handle a problem + @descr We filter the incoming interactions. some of them + will be forwarded to the generic UI interaction handler. + So we must not implement it twice. Some other ones + will be aborted only. + + @threadsafe yes + */ + virtual void SAL_CALL handle(const css::uno::Reference< css::task::XInteractionRequest >& xRequest) override; + + + /** + @interface XInteractionHandler2 + @short called from outside to handle a problem + @descr We filter the incoming interactions. some of them + will be forwarded to the generic UI interaction handler. + So we must not implement it twice. Some other ones + will be aborted only. + + @threadsafe yes + */ + virtual sal_Bool SAL_CALL handleInteractionRequest( const css::uno::Reference< css::task::XInteractionRequest >& xRequest ) override; + + + /** + @interface XInterface + @short called to query another interface of the component + @descr Will allow to query for XInteractionHandler2 if and only if m_xHandler supports this interface, too. + + @threadsafe yes + */ + virtual css::uno::Any SAL_CALL queryInterface( const css::uno::Type& aType ) override; + + // c++ interface + public: + + + /** + @short ctor to guarantee right initialized instances of this class + @descr It uses the given uno service manager to create the global + generic UI interaction handler for later internal using. + + @param xSMGR + uno service manager for creating services internally + + @threadsafe not necessary + */ + PreventDuplicateInteraction(const css::uno::Reference< css::uno::XComponentContext >& rxContext); + + + /** + @short dtor to free used memory. + */ + virtual ~PreventDuplicateInteraction() override; + + + /** + @short set the outside interaction handler, which must be used internally + if the interaction will not be blocked by the set list of rules. + + @note This overwrites the settings of e.g. useDefaultUUIHandler()! + + @param xHandler + the new interaction handler + */ + void setHandler(const css::uno::Reference< css::task::XInteractionHandler >& xHandler); + + + /** + @short instead of setting an outside interaction handler, this method + make sure the default UUI interaction handler of the office is used. + + @note This overwrites the settings of e.g. setHandler()! + */ + void useDefaultUUIHandler(); + + + /** + @short add a new interaction to the list of interactions, which + must be handled by this helper. + + @descr This method must be called immediately after a new instance of this helper was + created. Without such list of InteractionRules, this instances does nothing! + On the other side there is no possibility to remove rules. + So the same instance can't be used within different transactions. + It's a OneWay-object .-) + + @param aInteractionInfo + describe the type of interaction, hos often it can be called etcpp. + + @threadsafe yes + */ + void addInteractionRule(const PreventDuplicateInteraction::InteractionInfo& aInteractionInfo); + + + /** + @short return the info struct for the specified interaction. + + @param aInteraction + specify the interaction. + + @param pReturn + provides information about: + - the count how often this interaction was handled during the + lifetime of this helper. + - the interaction itself, so it can be analyzed further + + @return [boolean] + true if the queried interaction could be found. + false otherwise. + + @threadsafe yes + */ + bool getInteractionInfo(const css::uno::Type& aInteraction, + PreventDuplicateInteraction::InteractionInfo* pReturn ) const; +}; + +} // namespace sfx2 + +#endif // INCLUDED_FRAMEWORK_PREVENTDUPLICATEINTERACTION_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |