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Diffstat (limited to 'sd/source/ui/framework/module/ShellStackGuard.hxx')
-rw-r--r-- | sd/source/ui/framework/module/ShellStackGuard.hxx | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/sd/source/ui/framework/module/ShellStackGuard.hxx b/sd/source/ui/framework/module/ShellStackGuard.hxx new file mode 100644 index 000000000..3a93a7fd5 --- /dev/null +++ b/sd/source/ui/framework/module/ShellStackGuard.hxx @@ -0,0 +1,97 @@ +/* -*- 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_SD_SOURCE_UI_FRAMEWORK_MODULE_SHELLSTACKGUARD_HXX +#define INCLUDED_SD_SOURCE_UI_FRAMEWORK_MODULE_SHELLSTACKGUARD_HXX + +#include <cppuhelper/basemutex.hxx> + +#include <framework/ConfigurationController.hxx> + +#include <com/sun/star/drawing/framework/XConfigurationChangeListener.hpp> + +#include <vcl/idle.hxx> +#include <cppuhelper/compbase.hxx> +#include <memory> + +namespace com::sun::star::drawing::framework { class XConfigurationController; } +namespace com::sun::star::frame { class XController; } + +namespace sd { + +class ViewShellBase; + +} + +namespace sd::framework { + +typedef ::cppu::WeakComponentImplHelper < + css::drawing::framework::XConfigurationChangeListener + > ShellStackGuardInterfaceBase; + +/** This module locks updates of the current configuration in situations + when the shell stack must not be modified. + + On every start of a configuration update the ShellStackGuard checks the + printer. If it is printing the configuration update is locked. It then + polls the printer and unlocks updates when printing finishes. + + When in the future there are no resources left that use shells then this + module can be removed. +*/ +class ShellStackGuard + : private ::cppu::BaseMutex, + public ShellStackGuardInterfaceBase +{ +public: + explicit ShellStackGuard (css::uno::Reference<css::frame::XController> const & rxController); + virtual ~ShellStackGuard() override; + + virtual void SAL_CALL disposing() override; + + // XConfigurationChangeListener + + virtual void SAL_CALL notifyConfigurationChange ( + const css::drawing::framework::ConfigurationChangeEvent& rEvent) override; + + // XEventListener + + virtual void SAL_CALL disposing (const css::lang::EventObject& rEvent) override; + +private: + css::uno::Reference<css::drawing::framework::XConfigurationController> + mxConfigurationController; + ViewShellBase* mpBase; + std::unique_ptr<ConfigurationController::Lock> mpUpdateLock; + Idle maPrinterPollingIdle; + + DECL_LINK(TimeoutHandler, Timer*, void); + + /** Return <TRUE/> when the printer is printing. Return <FALSE/> when + the printer is not printing, or there is no printer, or something + else went wrong. + */ + bool IsPrinting() const; +}; + +} // end of namespace sd::framework + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |