Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 736 insertions, 0 deletions

diff --git a/sfx2/source/dialog/backingcomp.cxx b/sfx2/source/dialog/backingcomp.cxx
new file mode 100644
index 000000000..845435ddc
--- /dev/null
+++ b/sfx2/source/dialog/backingcomp.cxx
@@ -0,0 +1,736 @@
+/* -*- 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 "backingwindow.hxx"
+
+#include <com/sun/star/frame/XDispatchProvider.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/awt/KeyEvent.hpp>
+#include <com/sun/star/frame/XLayoutManager.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/awt/XWindow.hpp>
+#include <com/sun/star/awt/XKeyListener.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <com/sun/star/frame/XFrame.hpp>
+#include <com/sun/star/frame/XDispatch.hpp>
+#include <com/sun/star/lang/XEventListener.hpp>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/lang/XTypeProvider.hpp>
+
+#include <cppuhelper/supportsservice.hxx>
+#include <cppuhelper/queryinterface.hxx>
+#include <cppuhelper/typeprovider.hxx>
+#include <cppuhelper/weak.hxx>
+#include <toolkit/helper/vclunohelper.hxx>
+#include <vcl/wrkwin.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/syswin.hxx>
+
+#include <sfx2/notebookbar/SfxNotebookBar.hxx>
+
+namespace {
+
+/**
+    implements the backing component.
+
+    This component is a special one, which doesn't provide a controller
+    nor a model. It supports the following features:
+        - Drag & Drop
+        - Key Accelerators
+        - Simple Menu
+        - Progress Bar
+        - Background
+ */
+class BackingComp : public  css::lang::XTypeProvider
+                  , public  css::lang::XServiceInfo
+                  , public  css::lang::XInitialization
+                  , public  css::frame::XController  // => XComponent
+                  , public  css::awt::XKeyListener // => XEventListener
+                  , public css::frame::XDispatchProvider
+                  , public css::frame::XDispatch
+                  , public  ::cppu::OWeakObject
+{
+private:
+    /** reference to the component window. */
+    css::uno::Reference< css::awt::XWindow > m_xWindow;
+
+    /** the owner frame of this component. */
+    css::uno::Reference< css::frame::XFrame > m_xFrame;
+
+    Size m_aInitialWindowMinSize;
+
+public:
+
+    explicit BackingComp();
+
+    // XInterface
+    virtual css::uno::Any SAL_CALL queryInterface( const css::uno::Type& aType ) override;
+    virtual void          SAL_CALL acquire       (                             ) noexcept override;
+    virtual void          SAL_CALL release       (                             ) noexcept override;
+
+    // XTypeProvide
+    virtual css::uno::Sequence< css::uno::Type > SAL_CALL getTypes           () override;
+    virtual css::uno::Sequence< sal_Int8 >       SAL_CALL getImplementationId() override;
+
+    // XServiceInfo
+    virtual OUString                       SAL_CALL getImplementationName   (                                     ) override;
+    virtual sal_Bool                              SAL_CALL supportsService         ( const OUString& sServiceName ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames(                                     ) override;
+
+    // XInitialization
+    virtual void SAL_CALL initialize( const css::uno::Sequence< css::uno::Any >& lArgs ) override;
+
+    // XController
+    virtual void SAL_CALL attachFrame( const css::uno::Reference< css::frame::XFrame >& xFrame ) override;
+    virtual sal_Bool SAL_CALL attachModel( const css::uno::Reference< css::frame::XModel >& xModel ) override;
+    virtual sal_Bool SAL_CALL suspend( sal_Bool bSuspend ) override;
+    virtual css::uno::Any SAL_CALL getViewData() override;
+    virtual void SAL_CALL restoreViewData( const css::uno::Any& aData ) override;
+    virtual css::uno::Reference< css::frame::XModel > SAL_CALL getModel() override;
+    virtual css::uno::Reference< css::frame::XFrame > SAL_CALL getFrame() override;
+
+    // XKeyListener
+    virtual void SAL_CALL keyPressed ( const css::awt::KeyEvent& aEvent ) override;
+    virtual void SAL_CALL keyReleased( const css::awt::KeyEvent& aEvent ) override;
+
+    // XEventListener
+    virtual void SAL_CALL disposing( const css::lang::EventObject& aEvent ) override;
+
+    // XComponent
+    virtual void SAL_CALL dispose            (                                                                   ) override;
+    virtual void SAL_CALL addEventListener   ( const css::uno::Reference< css::lang::XEventListener >& xListener ) override;
+    virtual void SAL_CALL removeEventListener( const css::uno::Reference< css::lang::XEventListener >& xListener ) override;
+
+    // XDispatchProvider
+    virtual css::uno::Reference< css::frame::XDispatch > SAL_CALL queryDispatch( const css::util::URL& aURL, const OUString& sTargetFrameName , sal_Int32 nSearchFlags ) override;
+    virtual css::uno::Sequence< css::uno::Reference< css::frame::XDispatch > > SAL_CALL queryDispatches( const css::uno::Sequence< css::frame::DispatchDescriptor >& lDescriptions    ) override;
+
+    // XDispatch
+    virtual void SAL_CALL dispatch( const css::util::URL& aURL, const css::uno::Sequence< css::beans::PropertyValue >& lArguments ) override;
+    virtual void SAL_CALL addStatusListener( const css::uno::Reference< css::frame::XStatusListener >& xListener, const css::util::URL& aURL ) override;
+    virtual void SAL_CALL removeStatusListener( const css::uno::Reference< css::frame::XStatusListener >& xListener, const css::util::URL& aURL ) override;
+};
+
+BackingComp::BackingComp()
+{
+}
+
+/** return information about supported interfaces.
+
+    Some interfaces are supported by his class directly, but some other ones are
+    used by aggregation. An instance of this class must provide some window interfaces.
+    But it must represent a VCL window behind such interfaces too! So we use an internal
+    saved window member to ask it for its interfaces and return it. But we must be aware then,
+    that it can be destroyed from outside too ...
+
+    @param  aType
+                describe the required interface type
+
+    @return An Any holding the instance, which provides the queried interface.
+            Note: There exist two possible results ... this instance itself and her window member!
+ */
+
+css::uno::Any SAL_CALL BackingComp::queryInterface( /*IN*/ const css::uno::Type& aType )
+{
+    // first look for own supported interfaces
+    css::uno::Any aResult = ::cppu::queryInterface(
+                aType,
+                static_cast< css::lang::XTypeProvider* >(this),
+                static_cast< css::lang::XServiceInfo* >(this),
+                static_cast< css::lang::XInitialization* >(this),
+                static_cast< css::frame::XController* >(this),
+                static_cast< css::lang::XComponent* >(this),
+                static_cast< css::lang::XEventListener* >(this),
+                static_cast< css::awt::XKeyListener* >(static_cast< css::lang::XEventListener* >(this)),
+                static_cast< css::frame::XDispatchProvider* >(this),
+                static_cast< css::frame::XDispatch* >(this) );
+
+    // then look for supported window interfaces
+    // Note: They exist only, if this instance was initialized
+    // with a valid window reference. It's aggregation on demand ...
+    if (!aResult.hasValue())
+    {
+        /* SAFE { */
+        SolarMutexGuard aGuard;
+        if (m_xWindow.is())
+            aResult = m_xWindow->queryInterface(aType);
+        /* } SAFE */
+    }
+
+    // look for XWeak and XInterface
+    if (!aResult.hasValue())
+        aResult = OWeakObject::queryInterface(aType);
+
+    return aResult;
+}
+
+
+/** increase ref count of this instance.
+ */
+
+void SAL_CALL BackingComp::acquire()
+    noexcept
+{
+    OWeakObject::acquire();
+}
+
+
+/** decrease ref count of this instance.
+ */
+
+void SAL_CALL BackingComp::release()
+    noexcept
+{
+    OWeakObject::release();
+}
+
+
+/** return collection about all supported interfaces.
+
+    Optimize this method !
+    We initialize a static variable only one time.
+    And we don't must use a mutex at every call!
+    For the first call; pTypeCollection is NULL -
+    for the second call pTypeCollection is different from NULL!
+
+    @return A list of all supported interface types.
+*/
+
+css::uno::Sequence< css::uno::Type > SAL_CALL BackingComp::getTypes()
+{
+    static cppu::OTypeCollection aTypeCollection = [this]() {
+        SolarMutexGuard aGuard;
+        css::uno::Reference<css::lang::XTypeProvider> xProvider(m_xWindow, css::uno::UNO_QUERY);
+
+        css::uno::Sequence<css::uno::Type> lWindowTypes;
+        if (xProvider.is())
+            lWindowTypes = xProvider->getTypes();
+
+        return cppu::OTypeCollection(
+            cppu::UnoType<css::lang::XInitialization>::get(),
+            cppu::UnoType<css::lang::XTypeProvider>::get(),
+            cppu::UnoType<css::lang::XServiceInfo>::get(),
+            cppu::UnoType<css::frame::XController>::get(),
+            cppu::UnoType<css::lang::XComponent>::get(),
+            cppu::UnoType<css::frame::XDispatchProvider>::get(),
+            cppu::UnoType<css::frame::XDispatch>::get(), lWindowTypes);
+    }();
+
+    return aTypeCollection.getTypes();
+}
+
+
+/** create one unique Id for all instances of this class.
+
+    Optimize this method
+    We initialize a static variable only one time. And we don't must use a mutex at every call!
+    For the first call; pID is NULL - for the second call pID is different from NULL!
+
+    @return A byte array, which represent the unique id.
+*/
+
+css::uno::Sequence< sal_Int8 > SAL_CALL BackingComp::getImplementationId()
+{
+    return css::uno::Sequence<sal_Int8>();
+}
+
+OUString SAL_CALL BackingComp::getImplementationName()
+{
+    return "com.sun.star.comp.sfx2.BackingComp";
+}
+
+sal_Bool SAL_CALL BackingComp::supportsService( /*IN*/ const OUString& sServiceName )
+{
+    return cppu::supportsService(this, sServiceName);
+}
+
+css::uno::Sequence< OUString > SAL_CALL BackingComp::getSupportedServiceNames()
+{
+    return { "com.sun.star.frame.StartModule", "com.sun.star.frame.ProtocolHandler" };
+}
+
+
+/**
+    attach this component to a target frame.
+
+    We have to use the container window of this frame as parent window of our own component window.
+    But it's not allowed to work with it really. May another component used it too.
+    Currently we need it only to create our child component window and support it's
+    interfaces inside our queryInterface() method. The user of us must have e.g. the
+    XWindow interface of it to be able to call setComponent(xWindow,xController) at the
+    frame!
+
+    May he will do the following things:
+
+    <listing>
+        XController xBackingComp = (XController)UnoRuntime.queryInterface(
+            XController.class,
+            xSMGR.createInstance(SERVICENAME_STARTMODULE));
+
+        // at this time XWindow isn't present at this instance!
+        XWindow xBackingComp = (XWindow)UnoRuntime.queryInterface(
+            XWindow.class,
+            xBackingComp);
+
+        // attach controller to the frame
+        // We will use its container window, to create
+        // the component window. From now we offer the window interfaces!
+        xBackingComp.attachFrame(xFrame);
+
+        XWindow xBackingComp = (XWindow)UnoRuntime.queryInterface(
+            XWindow.class,
+            xBackingComp);
+
+        // Our user can set us at the frame as new component
+        xFrame.setComponent(xBackingWin, xBackingComp);
+
+        // But that had no effect to our view state.
+        // We must be started to create our UI elements like e.g. menu, title, background ...
+        XInitialization xBackingInit = (XInitialization)UnoRuntime.queryInterface(
+            XInitialization.class,
+            xBackingComp);
+
+        xBackingInit.initialize(lArgs);
+    </listing>
+
+    @param  xFrame
+                reference to our new target frame
+
+    @throw  css::uno::RuntimeException
+                if the given frame reference is wrong or component window couldn't be created
+                successfully.
+                We throw it too, if we already attached to a frame. Because we don't support
+                reparenting of our component window on demand!
+*/
+
+void SAL_CALL BackingComp::attachFrame( /*IN*/ const css::uno::Reference< css::frame::XFrame >& xFrame )
+{
+    /* SAFE */
+    SolarMutexGuard aGuard;
+
+    // check some required states
+    if (m_xFrame.is())
+        throw css::uno::RuntimeException(
+                "already attached",
+                static_cast< ::cppu::OWeakObject* >(this));
+
+    if (!xFrame.is())
+        throw css::uno::RuntimeException(
+                "invalid frame reference",
+                static_cast< ::cppu::OWeakObject* >(this));
+
+    if (!m_xWindow.is())
+        return; // disposed
+
+    // safe the frame reference
+    m_xFrame = xFrame;
+
+    // initialize the component and its parent window
+    css::uno::Reference< css::awt::XWindow > xParentWindow = xFrame->getContainerWindow();
+    VclPtr< WorkWindow > pParent = static_cast<WorkWindow*>(VCLUnoHelper::GetWindow(xParentWindow));
+    VclPtr< vcl::Window > pWindow = VCLUnoHelper::GetWindow(m_xWindow);
+
+    // disable full screen mode of the frame!
+    if (pParent && pParent->IsFullScreenMode())
+    {
+        pParent->ShowFullScreenMode(false);
+        pParent->SetMenuBarMode(MenuBarMode::Normal);
+    }
+
+    // create the menu bar for the backing component
+    css::uno::Reference< css::beans::XPropertySet > xPropSet(m_xFrame, css::uno::UNO_QUERY_THROW);
+    css::uno::Reference< css::frame::XLayoutManager > xLayoutManager;
+    xPropSet->getPropertyValue("LayoutManager") >>= xLayoutManager;
+    if (xLayoutManager.is())
+    {
+        xLayoutManager->lock();
+        xLayoutManager->createElement("private:resource/menubar/menubar");
+        xLayoutManager->unlock();
+    }
+
+    if (pWindow)
+    {
+        // set help ID for our canvas
+        pWindow->SetHelpId("FWK_HID_BACKINGWINDOW");
+    }
+
+    // inform BackingWindow about frame
+    BackingWindow* pBack = dynamic_cast<BackingWindow*>(pWindow.get());
+    if( pBack )
+        pBack->setOwningFrame( m_xFrame );
+
+    // Set a minimum size for Start Center
+    if( !pParent || !pBack )
+        return;
+
+    tools::Long nMenuHeight = 0;
+    vcl::Window* pMenu = pParent->GetWindow(GetWindowType::Next);
+    if( pMenu )
+        nMenuHeight = pMenu->GetSizePixel().Height();
+
+    m_aInitialWindowMinSize = pParent->GetMinOutputSizePixel();
+    if (!m_aInitialWindowMinSize.Width())
+        m_aInitialWindowMinSize.AdjustWidth(1);
+    if (!m_aInitialWindowMinSize.Height())
+        m_aInitialWindowMinSize.AdjustHeight(1);
+
+    pParent->SetMinOutputSizePixel(
+        Size(
+            pBack->get_width_request(),
+            pBack->get_height_request() + nMenuHeight));
+
+    /* } SAFE */
+}
+
+
+/** not supported.
+
+    This component does not know any model. It will be represented by a window and
+    its controller only.
+
+    return  <FALSE/> every time.
+ */
+
+sal_Bool SAL_CALL BackingComp::attachModel( /*IN*/ const css::uno::Reference< css::frame::XModel >& )
+{
+    return false;
+}
+
+
+/** not supported.
+
+    This component does not know any model. It will be represented by a window and
+    its controller only.
+
+    return  An empty reference every time.
+ */
+
+css::uno::Reference< css::frame::XModel > SAL_CALL BackingComp::getModel()
+{
+    return css::uno::Reference< css::frame::XModel >();
+}
+
+
+/** not supported.
+
+    return  An empty value.
+ */
+
+css::uno::Any SAL_CALL BackingComp::getViewData()
+{
+    return css::uno::Any();
+}
+
+
+/** not supported.
+
+    @param  aData
+                not used.
+ */
+
+void SAL_CALL BackingComp::restoreViewData( /*IN*/ const css::uno::Any& )
+{
+}
+
+
+/** returns the attached frame for this component.
+
+    @see    attachFrame()
+
+    @return The internally saved frame reference.
+            Can be null, if attachFrame() was not called before.
+ */
+
+css::uno::Reference< css::frame::XFrame > SAL_CALL BackingComp::getFrame()
+{
+    /* SAFE { */
+    SolarMutexGuard aGuard;
+    return m_xFrame;
+    /* } SAFE */
+}
+
+
+/** ask controller for its current working state.
+
+    If someone wishes to close this component, it must suspend the controller before.
+    That will be a chance for it to disagree with that AND show any UI for a possible
+    UI user.
+
+    @param  bSuspend
+                If it's set to sal_True this controller should be suspended.
+                sal_False will resuspend it.
+
+    @return sal_True if the request could be finished successfully; sal_False otherwise.
+ */
+
+sal_Bool SAL_CALL BackingComp::suspend( /*IN*/ sal_Bool )
+{
+    /* FIXME ... implemented by using default :-( */
+    return true;
+}
+
+
+/** callback from our window member.
+
+    Our internal saved window wish to die. It will be disposed from outside (may be the frame)
+    and inform us. We must release its reference only here. Of course we check the given reference
+    here and reject callback from unknown sources.
+
+    Note: deregistration as listener isn't necessary here. The broadcaster do it automatically.
+
+    @param  aEvent
+                describe the broadcaster of this callback
+
+    @throw css::uno::RuntimeException
+                if the broadcaster doesn't represent the expected window reference.
+*/
+
+void SAL_CALL BackingComp::disposing( /*IN*/ const css::lang::EventObject& aEvent )
+{
+    // Attention: don't free m_pAccExec here! see comments inside dtor and
+    // keyPressed() for further details.
+
+    /* SAFE { */
+    SolarMutexGuard aGuard;
+
+    if (!aEvent.Source.is() || aEvent.Source!=m_xWindow || !m_xWindow.is())
+        throw css::uno::RuntimeException(
+                "unexpected source or called twice",
+                static_cast< ::cppu::OWeakObject* >(this));
+
+    m_xWindow.clear();
+
+    /* } SAFE */
+}
+
+
+/** kill this instance.
+
+    It can be called from our owner frame only. But there is no possibility to check the caller.
+    We have to release all our internal used resources and die. From this point we can throw
+    DisposedExceptions for every further interface request... but current implementation doesn't do so...
+
+*/
+
+void SAL_CALL BackingComp::dispose()
+{
+    /* SAFE { */
+    SolarMutexGuard aGuard;
+
+    if (m_xFrame.is())
+    {
+        css::uno::Reference< css::awt::XWindow > xParentWindow = m_xFrame->getContainerWindow();
+        VclPtr< WorkWindow > pParent = static_cast<WorkWindow*>(VCLUnoHelper::GetWindow(xParentWindow));
+        if (pParent)
+        {
+            pParent->SetMinOutputSizePixel(m_aInitialWindowMinSize);
+            // hide NotebookBar
+            sfx2::SfxNotebookBar::CloseMethod(static_cast<SystemWindow*>(pParent));
+        }
+    }
+
+    // stop listening at the window
+    if (m_xWindow.is())
+    {
+        m_xWindow->removeEventListener(this);
+        m_xWindow->removeKeyListener(this);
+        m_xWindow.clear();
+    }
+
+    // forget all other used references
+    m_xFrame.clear();
+
+    /* } SAFE */
+}
+
+
+/** not supported.
+
+    @param  xListener
+                not used.
+
+    @throw  css::uno::RuntimeException
+                because the listener expect to be holded alive by this container.
+                We must inform it about this unsupported feature.
+ */
+
+void SAL_CALL BackingComp::addEventListener( /*IN*/ const css::uno::Reference< css::lang::XEventListener >& )
+{
+    throw css::uno::RuntimeException(
+            "not supported",
+            static_cast< ::cppu::OWeakObject* >(this));
+}
+
+
+/** not supported.
+
+    Because registration is not supported too, we must do nothing here. Nobody can call this method really.
+
+    @param  xListener
+                not used.
+ */
+
+void SAL_CALL BackingComp::removeEventListener( /*IN*/ const css::uno::Reference< css::lang::XEventListener >& )
+{
+}
+
+
+/**
+    force initialization for this component.
+
+    Inside attachFrame() we created our component window. But it was not allowed there, to
+    initialize it. E.g. the menu must be set at the container window of the frame, which
+    is our parent window. But may at that time another component used it.
+    That's why our creator has to inform us, when it's time to initialize us really.
+    Currently only calling of this method must be done. But further implementations
+    can use special in parameter to configure this initialization...
+
+    @param  lArgs
+                currently not used
+
+    @throw  css::uno::RuntimeException
+                if some resources are missing
+                Means if may be attachedFrame() wasn't called before.
+ */
+
+void SAL_CALL BackingComp::initialize( /*IN*/ const css::uno::Sequence< css::uno::Any >& lArgs )
+{
+    /* SAFE { */
+    SolarMutexGuard aGuard;
+
+    if (m_xWindow.is())
+        throw css::uno::Exception(
+                "already initialized",
+                static_cast< ::cppu::OWeakObject* >(this));
+
+    css::uno::Reference< css::awt::XWindow > xParentWindow;
+    if (
+        (lArgs.getLength()!=1         ) ||
+        (!(lArgs[0] >>= xParentWindow)) ||
+        (!xParentWindow.is()          )
+       )
+    {
+        throw css::uno::Exception(
+                "wrong or corrupt argument list",
+                static_cast< ::cppu::OWeakObject* >(this));
+    }
+
+    // create the component window
+    VclPtr<vcl::Window> pParent = VCLUnoHelper::GetWindow(xParentWindow);
+    VclPtr<vcl::Window> pWindow = VclPtr<BackingWindow>::Create(pParent);
+    m_xWindow = VCLUnoHelper::GetInterface(pWindow);
+
+    if (!m_xWindow.is())
+        throw css::uno::RuntimeException(
+                "couldn't create component window",
+                static_cast< ::cppu::OWeakObject* >(this));
+
+    // start listening for window disposing
+    // It's set at our owner frame as component window later too. So it will may be disposed there ...
+    m_xWindow->addEventListener(static_cast< css::lang::XEventListener* >(this));
+
+    m_xWindow->setVisible(true);
+
+    /* } SAFE */
+}
+
+
+void SAL_CALL BackingComp::keyPressed( /*IN*/ const css::awt::KeyEvent&  )
+{
+}
+
+
+void SAL_CALL BackingComp::keyReleased( /*IN*/ const css::awt::KeyEvent& )
+{
+    /* Attention
+        Please use keyPressed() instead of this method. Otherwise it would be possible, that
+        - a key input may be first switch to the backing mode
+        - and this component register itself as key listener too
+        - and it's first event will be a keyReleased() for the already well known event, which switched to the backing mode!
+        So it will be handled twice! document => backing mode => exit app...
+     */
+}
+
+// XDispatchProvider
+css::uno::Reference< css::frame::XDispatch > SAL_CALL BackingComp::queryDispatch( const css::util::URL& aURL, const OUString& /*sTargetFrameName*/, sal_Int32 /*nSearchFlags*/ )
+{
+    css::uno::Reference< css::frame::XDispatch > xDispatch;
+    if ( aURL.Protocol == "vnd.org.libreoffice.recentdocs:" )
+        xDispatch = this;
+
+    return xDispatch;
+}
+
+css::uno::Sequence < css::uno::Reference< css::frame::XDispatch > > SAL_CALL BackingComp::queryDispatches( const css::uno::Sequence < css::frame::DispatchDescriptor >& seqDescripts )
+{
+    sal_Int32 nCount = seqDescripts.getLength();
+    css::uno::Sequence < css::uno::Reference < XDispatch > > lDispatcher( nCount );
+
+    std::transform(seqDescripts.begin(), seqDescripts.end(), lDispatcher.getArray(),
+        [this](const css::frame::DispatchDescriptor& rDesc) -> css::uno::Reference<XDispatch> {
+            return queryDispatch(rDesc.FeatureURL, rDesc.FrameName, rDesc.SearchFlags); });
+
+    return lDispatcher;
+}
+
+// XDispatch
+void SAL_CALL BackingComp::dispatch( const css::util::URL& aURL, const css::uno::Sequence < css::beans::PropertyValue >& /*lArgs*/ )
+{
+    // vnd.org.libreoffice.recentdocs:ClearRecentFileList  - clear recent files
+    if ( aURL.Path != "ClearRecentFileList" )
+        return;
+
+    VclPtr<vcl::Window> pWindow = VCLUnoHelper::GetWindow(m_xWindow);
+    BackingWindow* pBack = dynamic_cast<BackingWindow*>(pWindow.get());
+    if( !pBack )
+        return;
+
+    pBack->clearRecentFileList();
+
+    // Recalculate minimum width
+    css::uno::Reference< css::awt::XWindow > xParentWindow = m_xFrame->getContainerWindow();
+    VclPtr< WorkWindow > pParent = static_cast<WorkWindow*>(VCLUnoHelper::GetWindow(xParentWindow));
+    if( pParent )
+    {
+        pParent->SetMinOutputSizePixel( Size(
+                pBack->get_width_request(),
+                pParent->GetMinOutputSizePixel().Height()) );
+    }
+}
+
+void SAL_CALL BackingComp::addStatusListener( const css::uno::Reference< css::frame::XStatusListener >& /*xControl*/, const css::util::URL& /*aURL*/ )
+{
+}
+
+void SAL_CALL BackingComp::removeStatusListener( const css::uno::Reference< css::frame::XStatusListener >& /*xControl*/, const css::util::URL& /*aURL*/ )
+{
+}
+
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
+com_sun_star_comp_sfx2_BackingComp_get_implementation(
+    css::uno::XComponentContext *,
+    css::uno::Sequence<css::uno::Any> const &)
+{
+    return cppu::acquire(new BackingComp);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */