/* -*- 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 <svx/svdocapt.hxx>
#include <svx/svdundo.hxx>
#include <vcl/cursor.hxx>
#include <osl/diagnose.h>

#include <global.hxx>
#include <drwlayer.hxx>
#include <userdat.hxx>
#include <tabvwsh.hxx>
#include <document.hxx>
#include <futext.hxx>
#include <docsh.hxx>
#include <postit.hxx>
#include <globstr.hrc>
#include <scresid.hxx>
#include <drawview.hxx>
#include <undocell.hxx>

//  Editing of Note-Key-Objects has to be stopped always via StopEditMode,
//  so that changes are taken over into the document!
//  (Fontwork-Execute in drawsh and drtxtob does not happen for Key-Objects)

void FuText::StopEditMode()
{
    SdrObject* pObject = pView->GetTextEditObject();
    if( !pObject ) return;

    // relock the internal layer that has been unlocked in FuText::SetInEditMode()
    if ( pObject->GetLayer() == SC_LAYER_INTERN )
        pView->LockInternalLayer();

    ScViewData& rViewData = rViewShell.GetViewData();
    ScDocument& rDoc = rViewData.GetDocument();
    ScDrawLayer* pDrawLayer = rDoc.GetDrawLayer();
    OSL_ENSURE( pDrawLayer && (pDrawLayer == pDrDoc), "FuText::StopEditMode - missing or different drawing layers" );

    ScAddress aNotePos;
    ScPostIt* pNote = nullptr;
    if( const ScDrawObjData* pCaptData = ScDrawLayer::GetNoteCaptionData( pObject, rViewData.GetTabNo() ) )
    {
        aNotePos = pCaptData->maStart;
        pNote = rDoc.GetNote( aNotePos );
        OSL_ENSURE( pNote && (pNote->GetCaption() == pObject), "FuText::StopEditMode - missing or invalid cell note" );
    }

    ScDocShell* pDocShell = rViewData.GetDocShell();
    SfxUndoManager* pUndoMgr = rDoc.IsUndoEnabled() ? pDocShell->GetUndoManager() : nullptr;
    if (pUndoMgr && !pUndoMgr->GetMaxUndoActionCount()) // tdf#134308 if max undo is 0, treat as if no undo
        pUndoMgr = nullptr;
    bool bNewNote = false;
    if( pNote && pUndoMgr )
    {
        /*  Put all undo actions already collected (e.g. create caption object)
            and all following undo actions (text changed) together into a ListAction. */
        std::unique_ptr<SdrUndoGroup> pCalcUndo = pDrawLayer->GetCalcUndo();

        if(pCalcUndo)
        {
            const OUString aUndoStr = ScResId( STR_UNDO_EDITNOTE );
            pUndoMgr->EnterListAction( aUndoStr, aUndoStr, 0, rViewShell.GetViewShellId() );

            /*  Note has been created before editing, if first undo action is
                an insert action. Needed below to decide whether to drop the
                undo if editing a new note has been cancelled. */
            bNewNote = (pCalcUndo->GetActionCount() > 0) && dynamic_cast< SdrUndoNewObj* >(pCalcUndo->GetAction( 0 ));

            // create a "insert note" undo action if needed
            if( bNewNote )
                pUndoMgr->AddUndoAction( std::make_unique<ScUndoReplaceNote>( *pDocShell, aNotePos, pNote->GetNoteData(), true, std::move(pCalcUndo) ) );
            else
                pUndoMgr->AddUndoAction( std::move(pCalcUndo) );
        }
    }

    if( pNote )
        rDoc.LockStreamValid(true);     // only the affected sheet is invalidated below

    /*  Unset the outliner undo manager before the call to SdrEndTextEdit.
        SdrObjEditView::SdrEndTextEdit destroys it, but then ScDrawView::SdrEndTextEdit
        initiates some UI update which might try to access the now invalid pointer. */
    rViewShell.SetDrawTextUndo( nullptr );

    /*  SdrObjEditView::SdrEndTextEdit() may try to delete the entire drawing
        object, if it does not contain text and has invisible border and fill.
        This must not happen for note caption objects. They will be removed
        below together with the cell note if the text is empty (independent of
        border and area formatting). It is possible to prevent automatic
        deletion by passing sal_True to this function. The return value changes
        from SdrEndTextEditKind::Deleted to SdrEndTextEditKind::ShouldBeDeleted in this
        case. */
    /*SdrEndTextEditKind eResult =*/ pView->SdrEndTextEdit( pNote != nullptr );

    vcl::Cursor* pCur = pWindow->GetCursor();
    if( pCur && pCur->IsVisible() )
        pCur->Hide();

    if( !pNote )
        return;

    ScTabView::OnLOKNoteStateChanged( pNote );

    // hide the caption object if it is in hidden state
    pNote->ShowCaptionTemp( aNotePos, false );

    // update author and date
    pNote->AutoStamp();

    /*  If the entire text has been cleared, the cell note and its caption
        object have to be removed. */
    SdrTextObj* pTextObject = DynCastSdrTextObj( pObject );
    bool bDeleteNote = !pTextObject || !pTextObject->HasText();
    if( bDeleteNote )
    {
        if( pUndoMgr )
        {
            // collect the "remove object" drawing undo action created by DeleteNote()
            pDrawLayer->BeginCalcUndo(false);
            // rescue note data before deletion
            ScNoteData aNoteData( pNote->GetNoteData() );
            // delete note from document (removes caption, but does not delete it)
            rDoc.ReleaseNote(aNotePos);
            // create undo action for removed note
            pUndoMgr->AddUndoAction( std::make_unique<ScUndoReplaceNote>( *pDocShell, aNotePos, aNoteData, false, pDrawLayer->GetCalcUndo() ) );
        }
        else
        {
            rDoc.ReleaseNote(aNotePos);
        }
        // ScDocument::DeleteNote has deleted the note that pNote points to
        pNote = nullptr;
    }

    // finalize the undo list action
    if( pUndoMgr )
    {
        pUndoMgr->LeaveListAction();

        /*  #i94039# Update the default name "Edit Note" of the undo action
            if the note has been created before editing or is deleted due
            to deleted text. If the note has been created *and* is deleted,
            the last undo action can be removed completely. Note: The
            function LeaveListAction() removes the last action by itself,
            if it is empty (when result is SdrEndTextEditKind::Unchanged). */
        if( bNewNote && bDeleteNote )
        {
            pUndoMgr->RemoveLastUndoAction();

            // Make sure the former area of the note anchor is invalidated.
            ScRangeList aRangeList(aNotePos);
            ScMarkData aMarkData(rDoc.GetSheetLimits(), aRangeList);
            rViewShell.UpdateSelectionArea(aMarkData);
        }
        else if( bNewNote || bDeleteNote )
        {
            SfxListUndoAction* pAction = dynamic_cast< SfxListUndoAction* >( pUndoMgr->GetUndoAction() );
            OSL_ENSURE( pAction, "FuText::StopEditMode - list undo action expected" );
            if( pAction )
                pAction->SetComment( ScResId( bNewNote ? STR_UNDO_INSERTNOTE : STR_UNDO_DELETENOTE ) );
        }
    }

    // invalidate stream positions only for the affected sheet
    rDoc.LockStreamValid(false);
    rDoc.SetStreamValid(aNotePos.Tab(), false);
}

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