collection: Add batchRemove()

To complement batchSave()

Refs #66840

src/collectioneditor.h

@@ -58,6 +58,7 @@ public:
 
    virtual bool save(const T* item) =0;
    virtual bool batchSave(const QList<T*> contacts);
+   virtual bool batchRemove(const QList<T*> contacts);
    virtual bool remove(const T* item);
 
    ///Edit 'item', the implementation may be a GUI or something else

src/collectioneditor.hpp

@@ -56,6 +56,16 @@ template <class T> bool CollectionEditor<T>::batchSave(const QList<T*> contacts)
    return ret;
 }
 
+///Default batch saving implementation, some collections have better APIs
+template <class T> bool CollectionEditor<T>::batchRemove(const QList<T*> contacts)
+{
+   bool ret = true;
+   foreach(const T* c, contacts) {
+      ret &= remove(c);
+   }
+   return ret;
+}
+
 template <class T>
 bool CollectionEditor<T>::addContactMethod( T*       item , ContactMethod* number )
 {