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Diffstat (limited to 'sfx2/source/control/statcach.cxx')
| -rw-r--r-- | sfx2/source/control/statcach.cxx | 497 |
1 files changed, 497 insertions, 0 deletions
diff --git a/sfx2/source/control/statcach.cxx b/sfx2/source/control/statcach.cxx new file mode 100644 index 0000000000..2346333fd0 --- /dev/null +++ b/sfx2/source/control/statcach.cxx @@ -0,0 +1,497 @@ +/* -*- 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 . + */ + + +#ifdef __sun +#include <ctime> +#endif + +#include <framework/dispatchhelper.hxx> +#include <com/sun/star/frame/DispatchResultState.hpp> +#include <com/sun/star/frame/XFrame.hpp> +#include <com/sun/star/beans/PropertyValue.hpp> +#include <comphelper/servicehelper.hxx> +#include <svl/eitem.hxx> +#include <svl/intitem.hxx> +#include <svl/stritem.hxx> +#include <svl/visitem.hxx> +#include <svl/voiditem.hxx> + +#include <sfx2/app.hxx> +#include <statcach.hxx> +#include <sfx2/msg.hxx> +#include <sfx2/ctrlitem.hxx> +#include <sfx2/dispatch.hxx> +#include <sfx2/sfxuno.hxx> +#include <unoctitm.hxx> +#include <sfx2/msgpool.hxx> +#include <sfx2/viewfrm.hxx> +#include <utility> +#include <comphelper/diagnose_ex.hxx> + +using namespace ::com::sun::star; +using namespace ::com::sun::star::uno; +using namespace ::com::sun::star::util; + +BindDispatch_Impl::BindDispatch_Impl( css::uno::Reference< css::frame::XDispatch > _xDisp, css::util::URL _aURL, SfxStateCache *pStateCache, const SfxSlot* pS ) + : xDisp(std::move( _xDisp )) + , aURL(std::move( _aURL )) + , pCache( pStateCache ) + , pSlot( pS ) +{ + DBG_ASSERT( pCache && pSlot, "Invalid BindDispatch!"); + aStatus.IsEnabled = true; +} + +void SAL_CALL BindDispatch_Impl::disposing( const css::lang::EventObject& ) +{ + if ( xDisp.is() ) + { + xDisp->removeStatusListener( static_cast<css::frame::XStatusListener*>(this), aURL ); + xDisp.clear(); + } +} + +void SAL_CALL BindDispatch_Impl::statusChanged( const css::frame::FeatureStateEvent& rEvent ) +{ + aStatus = rEvent; + if ( !pCache ) + return; + + css::uno::Reference< css::frame::XStatusListener > xKeepAlive(this); + if ( aStatus.Requery ) + pCache->Invalidate( true ); + else + { + std::unique_ptr<SfxPoolItem> pItem; + sal_uInt16 nId = pCache->GetId(); + SfxItemState eState = SfxItemState::DISABLED; + if ( !aStatus.IsEnabled ) + { + // default + } + else if (aStatus.State.hasValue()) + { + eState = SfxItemState::DEFAULT; + css::uno::Any aAny = aStatus.State; + + const css::uno::Type& aType = aAny.getValueType(); + if ( aType == cppu::UnoType< bool >::get() ) + { + bool bTemp = false; + aAny >>= bTemp ; + pItem.reset( new SfxBoolItem( nId, bTemp ) ); + } + else if ( aType == ::cppu::UnoType< ::cppu::UnoUnsignedShortType >::get() ) + { + sal_uInt16 nTemp = 0; + aAny >>= nTemp ; + pItem.reset( new SfxUInt16Item( nId, nTemp ) ); + } + else if ( aType == cppu::UnoType<sal_uInt32>::get() ) + { + sal_uInt32 nTemp = 0; + aAny >>= nTemp ; + pItem.reset( new SfxUInt32Item( nId, nTemp ) ); + } + else if ( aType == cppu::UnoType<OUString>::get() ) + { + OUString sTemp ; + aAny >>= sTemp ; + pItem.reset( new SfxStringItem( nId, sTemp ) ); + } + else + { + if ( pSlot ) + pItem = pSlot->GetType()->CreateItem(); + if ( pItem ) + { + pItem->SetWhich( nId ); + pItem->PutValue( aAny, 0 ); + } + else + pItem.reset( new SfxVoidItem( nId ) ); + } + } + else + { + // DONTCARE status + pItem.reset( new SfxVoidItem(0) ); + eState = SfxItemState::UNKNOWN; + } + + for ( SfxControllerItem *pCtrl = pCache->GetItemLink(); + pCtrl; + pCtrl = pCtrl->GetItemLink() ) + pCtrl->StateChangedAtToolBoxControl( nId, eState, pItem.get() ); + } +} + +void BindDispatch_Impl::Release() +{ + if ( xDisp.is() ) + { + try + { + xDisp->removeStatusListener(static_cast<css::frame::XStatusListener*>(this), aURL); + } + catch (const lang::DisposedException&) + { + TOOLS_WARN_EXCEPTION("sfx", "BindDispatch_Impl::Release: xDisp is disposed: "); + } + xDisp.clear(); + } + pCache = nullptr; +} + + +sal_Int16 BindDispatch_Impl::Dispatch( const css::uno::Sequence < css::beans::PropertyValue >& aProps, bool bForceSynchron ) +{ + sal_Int16 eRet = css::frame::DispatchResultState::DONTKNOW; + + if ( xDisp.is() && aStatus.IsEnabled ) + { + ::rtl::Reference< ::framework::DispatchHelper > xHelper( new ::framework::DispatchHelper(nullptr)); + css::uno::Any aResult = xHelper->executeDispatch(xDisp, aURL, bForceSynchron, aProps); + + css::frame::DispatchResultEvent aEvent; + aResult >>= aEvent; + + eRet = aEvent.State; + } + + return eRet; +} + + +// This constructor for an invalid cache that is updated in the first request. + +SfxStateCache::SfxStateCache( sal_uInt16 nFuncId ): + nId(nFuncId), + pInternalController(nullptr), + pController(nullptr), + pLastItem( nullptr ), + eLastState( SfxItemState::UNKNOWN ), + bItemVisible( true ) +{ + bCtrlDirty = true; + bSlotDirty = true; + bItemDirty = true; +} + + +// The Destructor checks by assertion, even if controllers are registered. + +SfxStateCache::~SfxStateCache() +{ + DBG_ASSERT( pController == nullptr && pInternalController == nullptr, "there are still Controllers registered" ); + if ( !IsInvalidItem(pLastItem) ) + delete pLastItem; + if ( mxDispatch.is() ) + mxDispatch->Release(); +} + + +// invalidates the cache (next request will force update) +void SfxStateCache::Invalidate( bool bWithMsg ) +{ + bCtrlDirty = true; + if ( bWithMsg ) + { + bSlotDirty = true; + aSlotServ.SetSlot( nullptr ); + if ( mxDispatch.is() ) + mxDispatch->Release(); + mxDispatch.clear(); + } +} + + +// gets the corresponding function from the dispatcher or the cache + +const SfxSlotServer* SfxStateCache::GetSlotServer( SfxDispatcher &rDispat , const css::uno::Reference< css::frame::XDispatchProvider > & xProv ) +{ + + if ( bSlotDirty ) + { + // get the SlotServer; we need it for internal controllers anyway, but also in most cases + rDispat.FindServer_( nId, aSlotServ ); + + DBG_ASSERT( !mxDispatch.is(), "Old Dispatch not removed!" ); + + // we don't need to check the dispatch provider if we only have an internal controller + if ( xProv.is() ) + { + const SfxSlot* pSlot = aSlotServ.GetSlot(); + if ( !pSlot ) + // get the slot - even if it is disabled on the dispatcher + pSlot = SfxSlotPool::GetSlotPool( rDispat.GetFrame() ).GetSlot( nId ); + + if ( !pSlot || pSlot->pUnoName.isEmpty() ) + { + bSlotDirty = false; + bCtrlDirty = true; + return aSlotServ.GetSlot()? &aSlotServ: nullptr; + } + + // create the dispatch URL from the slot data + css::util::URL aURL; + OUString aCmd = ".uno:"; + aURL.Protocol = aCmd; + aURL.Path = pSlot->GetUnoName(); + aCmd += aURL.Path; + aURL.Complete = aCmd; + aURL.Main = aCmd; + + // try to get a dispatch object for this command + css::uno::Reference< css::frame::XDispatch > xDisp = xProv->queryDispatch( aURL, OUString(), 0 ); + if ( xDisp.is() ) + { + // test the dispatch object if it is just a wrapper for a SfxDispatcher + if (auto pDisp = dynamic_cast<SfxOfficeDispatch*>(xDisp.get())) + { + // The intercepting object is an SFX component + // If this dispatch object does not use the wanted dispatcher or the AppDispatcher, it's treated like any other UNO component + // (intercepting by internal dispatches) + SfxDispatcher *pDispatcher = pDisp->GetDispatcher_Impl(); + if ( pDispatcher == &rDispat || pDispatcher == SfxGetpApp()->GetAppDispatcher_Impl() ) + { + // so we can use it directly + bSlotDirty = false; + bCtrlDirty = true; + return aSlotServ.GetSlot()? &aSlotServ: nullptr; + } + } + + // so the dispatch object isn't a SfxDispatcher wrapper or it is one, but it uses another dispatcher, but not rDispat + mxDispatch = new BindDispatch_Impl( xDisp, aURL, this, pSlot ); + + // flags must be set before adding StatusListener because the dispatch object will set the state + bSlotDirty = false; + bCtrlDirty = true; + xDisp->addStatusListener( mxDispatch, aURL ); + } + else if ( rDispat.GetFrame() ) + { + css::uno::Reference < css::frame::XDispatchProvider > xFrameProv( + rDispat.GetFrame()->GetFrame().GetFrameInterface(), css::uno::UNO_QUERY ); + if ( xFrameProv != xProv ) + return GetSlotServer( rDispat, xFrameProv ); + } + } + + bSlotDirty = false; + bCtrlDirty = true; + } + + // we *always* return a SlotServer (if there is one); but in case of an external dispatch we might not use it + // for the "real" (non internal) controllers + return aSlotServ.GetSlot()? &aSlotServ: nullptr; +} + + +// Set Status in all Controllers + +void SfxStateCache::SetState +( + SfxItemState eState, // <SfxItemState> from 'pState' + const SfxPoolItem* pState, // Slot Status, 0 or -1 + bool bMaybeDirty +) + +/* [Description] + + This method distributes the status of all of this SID bound + <SfxControllerItem>s. If the value is the same as before, and if neither + controller was registered nor invalidated inbetween, then no value is + passed. This way the flickering is for example avoided in ListBoxes. +*/ +{ + SetState_Impl( eState, pState, bMaybeDirty ); +} + +void SfxStateCache::GetState +( + boost::property_tree::ptree& rState +) +{ + if ( !mxDispatch.is() && pController ) + { + for ( SfxControllerItem *pCtrl = pController; + pCtrl; + pCtrl = pCtrl->GetItemLink() ) + pCtrl->GetControlState( nId, rState ); + } +} + +void SfxStateCache::SetVisibleState( bool bShow ) +{ + if ( bShow == bItemVisible ) + return; + + SfxItemState eState( SfxItemState::DEFAULT ); + const SfxPoolItem* pState( nullptr ); + bool bDeleteItem( false ); + + bItemVisible = bShow; + if ( bShow ) + { + if ( IsInvalidItem(pLastItem) || ( pLastItem == nullptr )) + { + pState = new SfxVoidItem( nId ); + bDeleteItem = true; + } + else + pState = pLastItem; + + eState = eLastState; + } + else + { + pState = new SfxVisibilityItem( nId, false ); + bDeleteItem = true; + } + + // Update Controller + if ( !mxDispatch.is() && pController ) + { + for ( SfxControllerItem *pCtrl = pController; + pCtrl; + pCtrl = pCtrl->GetItemLink() ) + pCtrl->StateChangedAtToolBoxControl( nId, eState, pState ); + } + + if ( pInternalController ) + pInternalController->StateChangedAtToolBoxControl( nId, eState, pState ); + + if ( bDeleteItem ) + delete pState; +} + + +void SfxStateCache::SetState_Impl +( + SfxItemState eState, // <SfxItemState> from 'pState' + const SfxPoolItem* pState, // Slot Status, 0 or -1 + bool bMaybeDirty +) +{ + // If a hard update occurs between enter- and leave-registrations is a + // can also intermediate Cached exist without controller. + if ( !pController && !pInternalController ) + return; + + DBG_ASSERT( bMaybeDirty || !bSlotDirty, "setting state of dirty message" ); + DBG_ASSERT( SfxControllerItem::GetItemState(pState) == eState, "invalid SfxItemState" ); + + // does the controller have to be notified at all? + bool bNotify = bItemDirty; + if ( !bItemDirty ) + { + bNotify = !SfxPoolItem::areSame(pLastItem, pState) || (eState != eLastState); + } + + if ( bNotify ) + { + // Update Controller + if ( !mxDispatch.is() && pController ) + { + for ( SfxControllerItem *pCtrl = pController; + pCtrl; + pCtrl = pCtrl->GetItemLink() ) + pCtrl->StateChangedAtToolBoxControl( nId, eState, pState ); + } + + if ( pInternalController ) + static_cast<SfxDispatchController_Impl *>(pInternalController)->StateChanged( nId, eState, pState, &aSlotServ ); + + // Remember new value + if ( !IsInvalidItem(pLastItem) ) + { + delete pLastItem; + pLastItem = nullptr; + } + if ( pState && !IsInvalidItem(pState) ) + pLastItem = pState->Clone(); + else + pLastItem = nullptr; + eLastState = eState; + bItemDirty = false; + } + + bCtrlDirty = false; +} + + +// Set old status again in all the controllers + +void SfxStateCache::SetCachedState( bool bAlways ) +{ + DBG_ASSERT(pController==nullptr||pController->GetId()==nId, "Cache with wrong ControllerItem" ); + + // Only update if cached item exists and also able to process. + // (If the State is sent, it must be ensured that a SlotServer is present, + // see SfxControllerItem:: GetCoreMetric()) + if ( !(bAlways || ( !bItemDirty && !bSlotDirty )) ) + return; + + // Update Controller + if ( !mxDispatch.is() && pController ) + { + for ( SfxControllerItem *pCtrl = pController; + pCtrl; + pCtrl = pCtrl->GetItemLink() ) + pCtrl->StateChangedAtToolBoxControl( nId, eLastState, pLastItem ); + } + + if ( pInternalController ) + static_cast<SfxDispatchController_Impl *>(pInternalController)->StateChanged( nId, eLastState, pLastItem, &aSlotServ ); + + // Controller is now ok + bCtrlDirty = true; +} + + +css::uno::Reference< css::frame::XDispatch > SfxStateCache::GetDispatch() const +{ + if ( mxDispatch.is() ) + return mxDispatch->xDisp; + return css::uno::Reference< css::frame::XDispatch > (); +} + +sal_Int16 SfxStateCache::Dispatch( const SfxItemSet* pSet, bool bForceSynchron ) +{ + // protect pDispatch against destruction in the call + rtl::Reference<BindDispatch_Impl> xKeepAlive( mxDispatch ); + sal_Int16 eRet = css::frame::DispatchResultState::DONTKNOW; + + if ( mxDispatch.is() ) + { + uno::Sequence < beans::PropertyValue > aArgs; + if (pSet) + TransformItems( nId, *pSet, aArgs ); + + eRet = mxDispatch->Dispatch( aArgs, bForceSynchron ); + } + + return eRet; +} + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |