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+/* -*- 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(*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(css::uno::Reference< css::uno::XComponentContext > xContext);
+
+
+ /**
+ @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: */