office-gobmx/include/comphelper/SetFlagContextHelper.hxx
Mike Kaganski 592a02b286 tdf#130559: don't export preview view data to ODS
... because trying to activate this view on load will throw and crash

Unlike in Writer (SwPagePreview), Calc's ScPreviewShell overrides
WriteUserDataSequence to export the view data. This was implemented
in commit 1f51730f3c. That does not
give any clue why is this necessary, so I don't want to revert it.
So to pass the flag to XViewDataSupplier::getViewData, this patch
sets the flag in current context using comphelper::NewFlagContext.
This allows to only skip providing the data conditionally.

Change-Id: I95d70b30b0b8762d2b5c703c3e572064d0b2ef75
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/99441
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
2020-07-25 14:37:17 +02:00

71 lines
2.2 KiB
C++

/* -*- 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/.
*/
#ifndef INCLUDED_COMPHELPER_SETFLAGCONTEXTHELPER_HXX
#define INCLUDED_COMPHELPER_SETFLAGCONTEXTHELPER_HXX
#include <com/sun/star/uno/XCurrentContext.hpp>
#include <cppuhelper/implbase.hxx>
#include <uno/current_context.hxx>
namespace comphelper
{
// Used to flag some named value to be true for all code running in this context
class SetFlagContext final : public cppu::WeakImplHelper<css::uno::XCurrentContext>
{
public:
explicit SetFlagContext(const OUString& sName,
css::uno::Reference<css::uno::XCurrentContext> const& xContext)
: m_sName(sName)
, mxNextContext(xContext)
{
}
SetFlagContext(const SetFlagContext&) = delete;
SetFlagContext& operator=(const SetFlagContext&) = delete;
virtual css::uno::Any SAL_CALL getValueByName(OUString const& Name) override
{
if (Name == m_sName)
return css::uno::Any(true);
else if (mxNextContext.is())
return mxNextContext->getValueByName(Name);
else
return css::uno::Any();
}
private:
OUString m_sName;
css::uno::Reference<css::uno::XCurrentContext> mxNextContext;
};
// Returns a new context that reports the named value to be true
inline css::uno::Reference<css::uno::XCurrentContext> NewFlagContext(const OUString& sName)
{
return new SetFlagContext(sName, css::uno::getCurrentContext());
}
// A specialization for preventing "Java must be enabled" interaction
inline css::uno::Reference<css::uno::XCurrentContext> NoEnableJavaInteractionContext()
{
return NewFlagContext("DontEnableJava");
}
inline bool IsContextFlagActive(const OUString& sName)
{
bool bFlag = false;
if (const auto xContext = css::uno::getCurrentContext())
xContext->getValueByName(sName) >>= bFlag;
return bFlag;
}
} // namespace comphelper
#endif // INCLUDED_COMPHELPER_SETFLAGCONTEXTHELPER_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */