Added "No differences" placeholder to ChangeListPane widget

src/Insight/UserInterfaces/InsightWindow/Widgets/TargetMemoryInspectionPane/SnapshotManager/SnapshotDiff/ChangeListPane/ChangeListPane.cpp

@@ -44,6 +44,8 @@ namespace Widgets
         this->container->setFixedSize(this->size());
         this->container->setContentsMargins(0, 0, 0, 0);
 
+        this->placeHolderLabel = this->container->findChild<Label*>("placeholder-label");
+
         auto* containerLayout = this->container->findChild<QVBoxLayout*>();
 
         this->changeListView = new ListView({}, this);
@@ -116,6 +118,9 @@ namespace Widgets
 
         this->changeListScene->refreshGeometry();
 
+        this->changeListView->setVisible(!diffRanges.empty());
+        this->placeHolderLabel->setVisible(diffRanges.empty());
+
         // Trigger a resize event
         this->resize(this->size());
     }

src/Insight/UserInterfaces/InsightWindow/Widgets/TargetMemoryInspectionPane/SnapshotManager/SnapshotDiff/ChangeListPane/ChangeListPane.hpp

@@ -7,6 +7,7 @@
 
 #include "src/Insight/UserInterfaces/InsightWindow/Widgets/PaneWidget.hpp"
 #include "src/Insight/UserInterfaces/InsightWindow/Widgets/ListView/ListView.hpp"
+#include "src/Insight/UserInterfaces/InsightWindow/Widgets/Label.hpp"
 #include "src/Insight/UserInterfaces/InsightWindow/Widgets/TargetMemoryInspectionPane/SnapshotManager/SnapshotDiff/DifferentialHexViewerWidget/DifferentialHexViewerWidget.hpp"
 
 #include "src/Targets/TargetMemory.hpp"
@@ -42,6 +43,7 @@ namespace Widgets
         DifferentialHexViewerWidget* hexViewerWidgetB;
 
         QWidget* container = nullptr;
+        Label* placeHolderLabel = nullptr;
 
         ListView* changeListView = nullptr;
         ListScene* changeListScene = nullptr;

src/Insight/UserInterfaces/InsightWindow/Widgets/TargetMemoryInspectionPane/SnapshotManager/SnapshotDiff/ChangeListPane/UiFiles/ChangeListPane.ui

@@ -58,6 +58,19 @@
                     </layout>
                 </widget>
             </item>
+            <item>
+                <widget class="Label" name="placeholder-label">
+                    <property name="sizePolicy">
+                        <sizepolicy hsizetype="MinimumExpanding" vsizetype="MinimumExpanding"/>
+                    </property>
+                    <property name="alignment">
+                        <enum>Qt::AlignCenter</enum>
+                    </property>
+                    <property name="text">
+                        <string>No differences</string>
+                    </property>
+                </widget>
+            </item>
         </layout>
     </widget>
 </ui>

src/Insight/UserInterfaces/InsightWindow/Widgets/TargetMemoryInspectionPane/SnapshotManager/SnapshotDiff/Stylesheets/SnapshotDiff.qss

@@ -97,6 +97,11 @@
     border-left: 1px solid #41423f;
 }
 
+#change-list-pane #placeholder-label {
+    color: #737375;
+    font-size: 14px;
+}
+
 #snapshot-diff #data-details-container {
     border-bottom: 1px solid #41423f;
     color: #8a8a8d;