tdf#124895 Fix multi selected chapter promote demote

This patch makes multi selected chapter promote demote results the same
as when each selection is promoted or demoted individualy. Multi
selected chapter promotions (moved up) are done in tree list order from
top to bottom. Multi select chapter demotions (moved down) are done in
tree list order from bottom to top.

Change-Id: Iee238fd2bc84521a6eacf6688b94fa0be1e32f67
Reviewed-on: https://gerrit.libreoffice.org/71270
Tested-by: Jenkins
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>

sw/source/uibase/utlui/content.cxx

@@ -2423,6 +2423,7 @@ void SwContentTree::ExecCommand(const OUString& rCmd, bool bOutlineWithChildren)
         std::reverse(selected.begin(), selected.end());
     }
 
+    SwOutlineNodes::difference_type nDirLast = bUp ? -1 : 1;
     bool bStartedAction = false;
     for (auto const pCurrentEntry : selected)
     {
@@ -2478,8 +2479,12 @@ void SwContentTree::ExecCommand(const OUString& rCmd, bool bOutlineWithChildren)
                     nActEndPos = static_cast<SwOutlineContent*>(pEntry->GetUserData())->GetOutlinePos();
                     pEntry = Next(pEntry);
                 }
-                if (nDir == 1)
+                if (nDir == 1) // move down
                 {
+                    if (pCurrentEntry && IsSelected(pCurrentEntry->NextSibling()))
+                        nDir = nDirLast;
+                    else
+                    {
                     // If the last entry is to be moved we're done
                     if (pEntry && lcl_IsContent(pEntry))
                     {
@@ -2495,10 +2500,28 @@ void SwContentTree::ExecCommand(const OUString& rCmd, bool bOutlineWithChildren)
                             // nDest++ may only executed if pEntry != 0
                             if (pEntry)
                             {
-                                if (!lcl_IsContent(pEntry) ||
-                                    nActLevel >= static_cast<SwOutlineContent*>(pEntry->GetUserData())->GetOutlineLevel())
-                                {
+                                if (!lcl_IsContent(pEntry))
                                     break;
+                                else if (nActLevel >= static_cast<SwOutlineContent*>(pEntry->GetUserData())->GetOutlineLevel())
+                                {
+                                    // nDest needs adjusted if there are selected entries (including ancestral lineage)
+                                    // immediatly before the current moved entry.
+                                    SvTreeListEntry* pTmp = Prev(pEntry);
+                                    while (pTmp && lcl_IsContent(pTmp) &&
+                                           nActLevel < static_cast<SwOutlineContent*>(pTmp->GetUserData())->GetOutlineLevel())
+                                    {
+                                        while (pTmp && lcl_IsContent(pTmp) && !IsSelected(pTmp) &&
+                                               nActLevel < static_cast<SwOutlineContent*>(pTmp->GetUserData())->GetOutlineLevel())
+                                        {
+                                            pTmp = GetParent(pTmp);
+                                        }
+                                        if (!IsSelected(pTmp))
+                                            break;
+                                        pTmp = Prev(pTmp);
+                                        nDest = static_cast<SwOutlineContent*>(pTmp->GetUserData())->GetOutlinePos();
+                                    }
+                                    if (!IsSelected(pEntry->PrevSibling()))
+                                        break;
                                 }
                                 else
                                 {
@@ -2506,37 +2529,64 @@ void SwContentTree::ExecCommand(const OUString& rCmd, bool bOutlineWithChildren)
                                 }
                             }
                         }
-                        nDir = nDest - nActEndPos;
+                        nDirLast = nDir = nDest - nActEndPos;
                         // If no entry was found that allows insertion before
                         // it, we just move it to the end.
                     }
                     else
-                        nDir = 0;
+                        nDirLast = nDir = 0;
+                    }
                 }
-                else
+                else // move up
                 {
-                    SwOutlineNodes::size_type nDest = nActPos;
-                    pEntry = pCurrentEntry;
-                    while (pEntry && nDest)
+                    if (pCurrentEntry && IsSelected(pCurrentEntry->PrevSibling()))
+                        nDir = nDirLast;
+                    else
                     {
-                        pEntry = Prev(pEntry);
-                        assert(pEntry == nullptr || !lcl_IsContent(pEntry) || dynamic_cast<SwOutlineContent*>(static_cast<SwTypeNumber*>(pEntry->GetUserData())));
-                        if (pEntry && lcl_IsContent(pEntry))
-                        {
-                            nDest = static_cast<SwOutlineContent*>(pEntry->GetUserData())->GetOutlinePos();
-                        }
-                        else
-                        {
-                            nDest = 0; // presumably?
-                        }
-                        if (pEntry &&
-                            (!lcl_IsContent(pEntry)
-                             || nActLevel >= static_cast<SwOutlineContent*>(pEntry->GetUserData())->GetOutlineLevel()))
+                        SwOutlineNodes::size_type nDest = nActPos;
+                        pEntry = pCurrentEntry;
+                        while (pEntry && nDest)
                         {
-                            break;
+                            pEntry = Prev(pEntry);
+                            assert(pEntry == nullptr || !lcl_IsContent(pEntry) || dynamic_cast<SwOutlineContent*>(static_cast<SwTypeNumber*>(pEntry->GetUserData())));
+                            if (pEntry && lcl_IsContent(pEntry))
+                            {
+                                nDest = static_cast<SwOutlineContent*>(pEntry->GetUserData())->GetOutlinePos();
+                            }
+                            else
+                            {
+                                nDest = 0; // presumably?
+                            }
+                            if (pEntry)
+                            {
+                                if (!lcl_IsContent(pEntry))
+                                    break;
+                                else if (nActLevel >= static_cast<SwOutlineContent*>(pEntry->GetUserData())->GetOutlineLevel())
+                                {
+                                    // nDest needs adjusted if there are selected entries immediately
+                                    // after the level change.
+                                    SvTreeListEntry* pTmp = Next(pEntry);
+                                    while (pTmp && lcl_IsContent(pTmp) &&
+                                           nActLevel < static_cast<SwOutlineContent*>(pTmp->GetUserData())->GetOutlineLevel() &&
+                                           IsSelected(pTmp))
+                                    {
+                                        nDest = static_cast<SwOutlineContent*>(pTmp->GetUserData())->GetOutlinePos();
+                                        const auto nLevel = static_cast<SwOutlineContent*>(pTmp->GetUserData())->GetOutlineLevel();
+                                        // account for selected entries' decendent lineage
+                                        pTmp = Next(pTmp);
+                                        while (pTmp && lcl_IsContent(pTmp) &&
+                                               nLevel < static_cast<SwOutlineContent*>(pTmp->GetUserData())->GetOutlineLevel())
+                                        {
+                                            nDest = static_cast<SwOutlineContent*>(pTmp->GetUserData())->GetOutlinePos();
+                                            pTmp = Next(pTmp);
+                                        }
+                                    }
+                                    break;
+                                }
+                            }
                         }
+                        nDirLast = nDir = nDest - nActPos;
                     }
-                    nDir = nDest - nActPos;
                 }
                 if (nDir)
                 {