feat(StatusQ): custom UndefinedFilter filter for filtering undefined role values

Generic filter for handling undefined values. This kind of filtering
cannot be done using ValueFilter. On the other hand using
FastExpressionFilter is much more costy in terms of performance
overhead.

Closes: #13638

ui/StatusQ/CMakeLists.txt

@@ -111,6 +111,7 @@ add_library(StatusQ SHARED
         include/StatusQ/stringutilsinternal.h
         include/StatusQ/submodelproxymodel.h
         include/StatusQ/sumaggregator.h
+        include/StatusQ/undefinedfilter.h
         include/StatusQ/writableproxymodel.h
         src/QClipboardProxy.cpp
         src/aggregator.cpp
@@ -132,6 +133,7 @@ add_library(StatusQ SHARED
         src/stringutilsinternal.cpp
         src/submodelproxymodel.cpp
         src/sumaggregator.cpp
+        src/undefinedfilter.cpp
         src/writableproxymodel.cpp
 
         # wallet

ui/StatusQ/include/StatusQ/undefinedfilter.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <filters/rolefilter.h>
+
+class UndefinedFilter : public qqsfpm::RoleFilter
+{
+    Q_OBJECT
+
+public:
+    using RoleFilter::RoleFilter;
+
+protected:
+    bool filterRow(
+            const QModelIndex &sourceIndex,
+            const  qqsfpm::QQmlSortFilterProxyModel& proxyModel) const override;
+};

ui/StatusQ/src/plugin.cpp

@@ -8,6 +8,7 @@
 #include "StatusQ/fastexpressionfilter.h"
 #include "StatusQ/fastexpressionrole.h"
 #include "StatusQ/fastexpressionsorter.h"
+#include "StatusQ/formatteddoubleproperty.h"
 #include "StatusQ/leftjoinmodel.h"
 #include "StatusQ/modelutilsinternal.h"
 #include "StatusQ/movablemodel.h"
@@ -19,8 +20,8 @@
 #include "StatusQ/stringutilsinternal.h"
 #include "StatusQ/submodelproxymodel.h"
 #include "StatusQ/sumaggregator.h"
+#include "StatusQ/undefinedfilter.h"
 #include "StatusQ/writableproxymodel.h"
-#include "StatusQ/formatteddoubleproperty.h"
 
 #include "wallet/managetokenscontroller.h"
 #include "wallet/managetokensmodel.h"
@@ -48,6 +49,7 @@ public:
         qmlRegisterType<FastExpressionFilter>("StatusQ", 0, 1, "FastExpressionFilter");
         qmlRegisterType<FastExpressionRole>("StatusQ", 0, 1, "FastExpressionRole");
         qmlRegisterType<FastExpressionSorter>("StatusQ", 0, 1, "FastExpressionSorter");
+        qmlRegisterType<UndefinedFilter>("StatusQ", 0, 1, "UndefinedFilter");
 
         qmlRegisterType<LeftJoinModel>("StatusQ", 0, 1, "LeftJoinModel");
         qmlRegisterType<SubmodelProxyModel>("StatusQ", 0, 1, "SubmodelProxyModel");

ui/StatusQ/src/undefinedfilter.cpp

@@ -0,0 +1,11 @@
+#include "StatusQ/undefinedfilter.h"
+
+#include <qqmlsortfilterproxymodel.h>
+
+using namespace qqsfpm;
+
+bool UndefinedFilter::filterRow(const QModelIndex& sourceIndex,
+                                const QQmlSortFilterProxyModel& proxyModel) const
+{
+    return !sourceData(sourceIndex, proxyModel).isValid();
+}