Restore and fix and fix harder the EditTextObject::operator==()

... chaining down to EditTextObjectImpl::operator==() that compared unique_ptr
instead of content with ContentInfo::operator==() that needed to use
XEditAttribute::operator==() instead of comparing pointers. That resulted in
always false..

Wrong as a chain of

    commit 5a7a4325
    Date:   Tue Nov 10 14:59:05 2015 +0200

        editeng: boost::ptr_vector->std::vector<std::unique_ptr>

and

    commit 4ff5a555
    Date:   Tue Jan 19 15:17:30 2016 +0200

        loplugin:unusedmethods

Plus XEditAttribute::operator==() was wrong since

    commit 71158788
    Date:   Thu May 4 08:11:41 2006 +0000

        INTEGRATION: CWS impressc03u3 (1.8.40); FILE MERGED
        2006/04/27 12:33:10 cl 1.8.40.1: #i64360# fixed operator==

that (to fix a crash comparing items of different types) changed

-            ( (pItem == rCompare.pItem) || (*pItem == *rCompare.pItem));
+            ( (pItem == rCompare.pItem) ||
+            ( pItem->Which() != rCompare.pItem->Which()) ||
+            (*pItem == *rCompare.pItem));

so returning true if Which-IDs differed, instead of

+            ((pItem == rCompare.pItem) ||
+             ((pItem->Which() == rCompare.pItem->Which()) &&
+              (*pItem == *rCompare.pItem)));

Change-Id: I8300c04001e98cb71e520bbe2c180aec0c0a3333
Reviewed-on: https://gerrit.libreoffice.org/40455Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins <ci@libreoffice.org>

editeng/source/editeng/editobj.cxx

@@ -225,6 +225,26 @@ void ContentInfo::Dump() const
 }
 #endif
 
+bool ContentInfo::operator==( const ContentInfo& rCompare ) const
+{
+    if( (maText == rCompare.maText) &&
+            (aStyle == rCompare.aStyle ) &&
+            (maCharAttribs.size() == rCompare.maCharAttribs.size()) &&
+            (eFamily == rCompare.eFamily ) &&
+            (aParaAttribs == rCompare.aParaAttribs ) )
+    {
+        for (size_t i = 0, n = maCharAttribs.size(); i < n; ++i)
+        {
+            if (!(*(maCharAttribs[i]) == *(rCompare.maCharAttribs[i])))
+                return false;
+        }
+
+        return true;
+    }
+
+    return false;
+}
+
 EditTextObject::EditTextObject( SfxItemPool* pPool ) :
     mpImpl(new EditTextObjectImpl(this, pPool))
 {
@@ -1606,7 +1626,7 @@ bool EditTextObjectImpl::operator==( const EditTextObjectImpl& rCompare ) const
 
     for (size_t i = 0, n = aContents.size(); i < n; ++i)
     {
-        if (aContents[i] != rCompare.aContents[i])
+        if (!(*(aContents[i]) == *(rCompare.aContents[i])))
             return false;
     }
 

editeng/source/editeng/editobj2.hxx

@@ -69,8 +69,19 @@ public:
 
     bool IsFeature() const;
     void SetItem(const SfxPoolItem& rNew);
+
+    inline bool operator==( const XEditAttribute& rCompare ) const;
 };
 
+inline bool XEditAttribute::operator==( const XEditAttribute& rCompare ) const
+{
+    return  (nStart == rCompare.nStart) &&
+            (nEnd == rCompare.nEnd) &&
+            ((pItem == rCompare.pItem) ||
+             ((pItem->Which() == rCompare.pItem->Which()) &&
+              (*pItem == *rCompare.pItem)));
+}
+
 struct XParaPortion
 {
     long                nHeight;
@@ -152,6 +163,7 @@ public:
 
     const WrongList* GetWrongList() const;
     void SetWrongList( WrongList* p );
+    bool operator==( const ContentInfo& rCompare ) const;
 
     // #i102062#
     bool isWrongListEqual(const ContentInfo& rCompare) const;