/* -*- 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 .
*/
/** @descr <p>This class essentially provides the text and view forwarders. If no SdrView is given, this class handles the UNO objects, which are currently not concerned with view issues. In this case, GetViewForwarder() always returns NULL and the underlying EditEngine of the SvxTextForwarder is a background one (i.e. not the official DrawOutliner, but one created exclusively for this object, with no relation to a view). </p>
<p>If a SdrView is given at construction time, the caller is responsible for destroying this object when the view becomes invalid (the views cannot notify). If GetViewForwarder(sal_True) is called, the underlying shape is put into edit mode, the view forwarder returned encapsulates the OutlinerView and the next call to GetTextForwarder() yields a forwarder encapsulating the actual DrawOutliner. Thus, changes on that Outliner are immediately reflected on the screen. If the object leaves edit mode, the old behaviour is restored.</p>
*/ class SvxTextEditSourceImpl : public SfxListener, public SfxBroadcaster, public sdr::ObjectUser
{ private:
oslInterlockedCount maRefCount;
SdrObject* mpObject; // TTTT could be reference (?)
SdrText* mpText;
SdrView* mpView;
VclPtr<const OutputDevice> mpWindow;
SdrModel* mpModel; // TTTT probably not needed -> use SdrModel from SdrObject (?)
std::unique_ptr<SdrOutliner> mpOutliner;
std::unique_ptr<SvxOutlinerForwarder> mpTextForwarder;
std::unique_ptr<SvxDrawOutlinerViewForwarder> mpViewForwarder; // if non-NULL, use GetViewModeTextForwarder text forwarder
css::uno::Reference< css::linguistic2::XLinguServiceManager2 > m_xLinguServiceManager;
Point maTextOffset; bool mbDataValid; bool mbIsLocked; bool mbNeedsUpdate; bool mbOldUndoMode; bool mbForwarderIsEditMode; // have to reflect that, since ENDEDIT can happen more often bool mbShapeIsEditMode; // only true, if SdrHintKind::BeginEdit was received bool mbNotificationsDisabled; // prevent EditEngine/Outliner notifications (e.g. when setting up forwarder) bool mbNotifyEditOutlinerSet;
void SvxTextEditSourceImpl::Notify(SfxBroadcaster& rBC, const SfxHint& rHint)
{ // #i105988 keep reference to this object
rtl::Reference< SvxTextEditSourceImpl > xThis( this );
if (SfxHintId::Dying == rHint.GetId())
{ if (&rBC == mpView)
{
mpView = nullptr;
mpViewForwarder.reset();
}
} elseif (rHint.GetId() == SfxHintId::ThisIsAnSdrHint)
{ const SdrHint* pSdrHint = static_cast<const SdrHint*>(&rHint); switch( pSdrHint->GetKind() )
{ case SdrHintKind::ObjectChange:
{
mbDataValid = false; // Text has to be get again
if( HasView() )
{ // Update maTextOffset, object has changed // Cannot call that here, since TakeTextRect() (called from there) // changes outliner content. // UpdateOutliner();
// Broadcast object changes, as they might change visible attributes
SvxViewChangedHint aHint;
Broadcast( aHint );
} break;
}
case SdrHintKind::BeginEdit: if( mpObject == pSdrHint->GetObject() )
{ // Once SdrHintKind::BeginEdit is broadcast, each EditSource of // AccessibleCell will handle it here and call below: // mpView->GetTextEditOutliner()->SetNotifyHdl(), which // will replace the Notifier for current editable cell. It // is totally wrong. So add check here to avoid the // incorrect replacement of notifier.
// Currently it only happens on the editsource of // AccessibleCell if (mpObject && mpText)
{
sdr::table::SdrTableObj* pTableObj = dynamic_cast< sdr::table::SdrTableObj* >( mpObject ); if(pTableObj)
{ const sdr::table::CellRef& xCell = pTableObj->getActiveCell(); if (xCell.is())
{
sdr::table::Cell* pCellObj = dynamic_cast< sdr::table::Cell* >( mpText ); if (pCellObj && xCell.get() != pCellObj) break;
}
}
} // invalidate old forwarder if( !mbForwarderIsEditMode )
{
mpTextForwarder.reset();
}
// register as listener - need to broadcast state change messages if( mpView && mpView->GetTextEditOutliner() )
{
mpView->GetTextEditOutliner()->SetNotifyHdl( LINK(this, SvxTextEditSourceImpl, NotifyHdl) );
mbNotifyEditOutlinerSet = true;
}
// Only now we're really in edit mode
mbShapeIsEditMode = true;
// destroy view forwarder, OutlinerView no longer // valid (no need for UpdateData(), it's been // synched on SdrEndTextEdit)
mpViewForwarder.reset();
// Invalidate text forwarder, we might // not be called again before entering edit mode a // second time! Then, the old outliner might be // invalid. if( mbForwarderIsEditMode )
{
mbForwarderIsEditMode = false;
mpTextForwarder.reset();
}
} break;
/* this is a callback from the attached SdrObject when it is actually deleted */ void SvxTextEditSourceImpl::ObjectInDestruction(const SdrObject&)
{
mpObject = nullptr;
dispose();
Broadcast( SfxHint( SfxHintId::Dying ) );
}
/* unregister at all objects and set all references to 0 */ void SvxTextEditSourceImpl::dispose()
{
mpTextForwarder.reset();
mpViewForwarder.reset();
void SvxTextEditSourceImpl::SetupOutliner()
{ // only for UAA edit source: setup outliner equivalently as in // SdrTextObj::Paint(), such that formatting equals screen // layout if( !(mpObject && mpOutliner) ) return;
// calc text offset from shape anchor
maTextOffset = aPaintRect.TopLeft() - aBoundRect.TopLeft();
}
}
void SvxTextEditSourceImpl::UpdateOutliner()
{ // only for UAA edit source: update outliner equivalently as in // SdrTextObj::Paint(), such that formatting equals screen // layout if( !(mpObject && mpOutliner) ) return;
std::optional<OutlinerParaObject> pOutlinerParaObject;
SdrTextObj* pTextObj = DynCastSdrTextObj( mpObject ); if( pTextObj && pTextObj->getActiveText() == mpText )
pOutlinerParaObject = pTextObj->CreateEditOutlinerParaObject(); // Get the OutlinerParaObject if text edit is active bool bTextEditActive(false);
if( pOutlinerParaObject )
bTextEditActive = true; // text edit active elseif (mpText->GetOutlinerParaObject())
pOutlinerParaObject = *mpText->GetOutlinerParaObject();
// maybe we have to set the border attributes if (mpOutliner->GetParagraphCount()==1)
{ // if we only have one paragraph we check if it is empty
OUString aStr(mpOutliner->GetText(mpOutliner->GetParagraph(0)));
if (aStr.isEmpty())
{ // its empty, so we have to force the outliner to initialise itself
mpOutliner->SetText( u""_ustr, mpOutliner->GetParagraph( 0 ) );
auto pCell = dynamic_cast<sdr::table::Cell*>(mpText); if (pCell && pCell->GetStyleSheet())
mpOutliner->SetStyleSheet( 0, pCell->GetStyleSheet()); elseif (mpObject->GetStyleSheet())
mpOutliner->SetStyleSheet( 0, mpObject->GetStyleSheet());
}
}
mbDataValid = true;
}
if( bCreated && mpOutliner && HasView() )
{ // register as listener - need to broadcast state change messages // registration delayed until outliner is completely set up
mpOutliner->SetNotifyHdl( LINK(this, SvxTextEditSourceImpl, NotifyHdl) );
}
// prevent EE/Outliner notifications during setup
mbNotificationsDisabled = false;
// distinguish the cases // a) connected to view, maybe edit mode is active, can work directly on the EditOutliner // b) background Outliner, reflect changes into ParaOutlinerObject (this is exactly the old UNO code)
// IASS: testing for HasView() is *not* sufficient - there may be more views of one document // open and TextEdit is only active in one of them, or - as with IASS - it may even be the view // of the running SlideShow itself which also will have no active TextEdit and thus no Outliner. // Thus, to identify the view which indeed does have an outliner (and is in TextEdit mode), // also check if it has an active Outliner by using GetTextEditOutliner() if( HasView() && nullptr != mpView->GetTextEditOutliner() )
{ if( IsEditMode() != mbForwarderIsEditMode )
{ // forwarder mismatch - create new
mpTextForwarder.reset();
}
if( IsEditMode() ) return GetEditModeTextForwarder(); else return GetBackgroundTextForwarder();
} else
{ // tdf#123470 if the text edit mode of the shape is active, then we // cannot trust a previously cached TextForwarder state as the text may // be out of date, so force a refetch in that case, unless locked against // changes if (IsEditMode() && mpTextForwarder && !mbIsLocked)
{
assert(!mbForwarderIsEditMode); // because without a view there is no other option except !mbForwarderIsEditMode bool bTextEditActive = false;
SdrTextObj* pTextObj = DynCastSdrTextObj(mpObject); // similar to the GetBackgroundTextForwarder check, see if the text edit is active if (pTextObj && pTextObj->getActiveText() == mpText && pTextObj->CanCreateEditOutlinerParaObject())
bTextEditActive = true; // text edit active if (bTextEditActive)
mbDataValid = false;
}
return GetBackgroundTextForwarder();
}
}
std::unique_ptr<SvxDrawOutlinerViewForwarder> SvxTextEditSourceImpl::CreateViewForwarder()
{ if( mpView->GetTextEditOutlinerView() && mpObject )
{ // register as listener - need to broadcast state change messages
mpView->GetTextEditOutliner()->SetNotifyHdl( LINK(this, SvxTextEditSourceImpl, NotifyHdl) );
mbNotifyEditOutlinerSet = true;
// shall we delete? if( mpViewForwarder )
{ if( !IsEditMode() )
{ // destroy all forwarders (no need for UpdateData(), // it's been synched on SdrEndTextEdit)
mpViewForwarder.reset();
}
} // which to create? Directly in edit mode, create new, or none? elseif( mpView )
{ if( IsEditMode() )
{ // create new view forwarder
mpViewForwarder = CreateViewForwarder();
} elseif( bCreate )
{ // dispose old text forwarder
UpdateData();
mpTextForwarder.reset();
// enter edit mode
mpView->SdrEndTextEdit();
if(mpView->SdrBeginTextEdit(mpObject))
{
SdrTextObj* pTextObj = DynCastSdrTextObj( mpObject ); if (pTextObj && pTextObj->IsTextEditActive())
{ // create new view forwarder
mpViewForwarder = CreateViewForwarder();
} else
{ // failure. Somehow, SdrBeginTextEdit did not set // our SdrTextObj into edit mode
mpView->SdrEndTextEdit();
}
}
}
}
return mpViewForwarder.get();
}
void SvxTextEditSourceImpl::UpdateData()
{ // if we have a view and in edit mode, we're working with the // DrawOutliner. Thus, all changes made on the text forwarder are // reflected on the view and committed to the model on // SdrEndTextEdit(). Thus, no need for explicit updates here. if( HasView() && IsEditMode() ) return;
void SvxTextEditSourceImpl::lock()
{ // if this assert ever fires, we will need to make this a counter instead of a boolean
assert(!mbIsLocked && "cannot nest these loc() calls");
mbIsLocked = true; if( mpOutliner )
{ const_cast<EditEngine*>(&(mpOutliner->GetEditEngine()))->SetUpdateLayout( false );
mbOldUndoMode = mpOutliner->GetEditEngine().IsUndoEnabled(); const_cast<EditEngine*>(&(mpOutliner->GetEditEngine()))->EnableUndo( false );
}
}
Point SvxTextEditSourceImpl::LogicToPixel( const Point& rPoint, const MapMode& rMapMode )
{ // The responsibilities of ViewForwarder happen to be // somewhat mixed in this case. On the one hand, we need the // different interface queries on the SvxEditSource interface, // since we need both VisAreas. On the other hand, if an // EditViewForwarder exists, maTextOffset does not remain static, // but may change with every key press. if( IsEditMode() )
{
SvxEditViewForwarder* pForwarder = GetEditViewForwarder(false);
Point SvxTextEditSourceImpl::PixelToLogic( const Point& rPoint, const MapMode& rMapMode )
{ // The responsibilities of ViewForwarder happen to be // somewhat mixed in this case. On the one hand, we need the // different interface queries on the SvxEditSource interface, // since we need both VisAreas. On the other hand, if an // EditViewForwarder exists, maTextOffset does not remain static, // but may change with every key press. if( IsEditMode() )
{
SvxEditViewForwarder* pForwarder = GetEditViewForwarder(false);
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