Merge pull request #7 from micuintus/master

Add a `reSort()` function to the Collection.

Author: jrbarron

README.md

@@ -119,7 +119,7 @@ Return the jsobject that has the id specified by 'id'.
 
 ## Collection
 
-An item for sorting an filtering a JsonListModel. The Collection itself does not
+An item for sorting and filtering a JsonListModel. The Collection itself does not
 store any data, but rather proxies the data stored inside the source model.
 
 ### model : JsonListModel
@@ -164,6 +164,15 @@ function should return true for items that should be included; otherwise false.
 Return the jsobject at the index specified by the number. If Collection is sorted or filtered, then
 the index here refers to the index in the Collection *not* the JsonListModel.
 
+### reSort() : function
+
+Trigger sorting the collection again.
+
+**NOTE** Calling this function is *not* required if data within the model itself has changed
+(re-sorting will be conducted automatically in that case). You want to call this function if
+external data has been updated, e.g. you sort a model by distance and the current position
+of the user has changed.
+
 ### descendingSort : property bool: false
 
 Indicates if the role based sorting is sorted in ascending or descending order.

collection.cpp

@@ -115,3 +115,8 @@ QJSValue Collection::at(int row) const
     return jsonModel->at(source.row());
 }
 
+void Collection::reSort()
+{
+    sort(0);
+}
+

collection.h

@@ -26,6 +26,8 @@ class Collection : public QSortFilterProxyModel
 
     Q_INVOKABLE QJSValue at(int) const;
 
+    Q_INVOKABLE void reSort();
+
     inline bool caseSensitiveSort() const
     {
         return sortCaseSensitivity() == Qt::CaseSensitive;