Add existing sources

IconComboBox.qml

@@ -0,0 +1,69 @@
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Controls.Material
+import Qt.labs.folderlistmodel 2.4
+import comboboxtests 1.0
+
+ComboBox {
+    id: comboBox
+
+    property string iconSourceRole
+
+    delegate: ItemDelegate {
+        height: 64
+        anchors.left: parent.left
+        anchors.right: parent.right
+        contentItem: IconChooserDelegateLayout {
+            anchors.top: parent.top
+            anchors.bottom: parent.bottom
+            text: model[comboBox.textRole]
+            iconSource: model[comboBox.iconSourceRole]
+        }
+    }
+    contentItem: IconChooserDelegateLayout {
+        text: comboBox.displayText
+        isInsideMaterialComboBox: true
+        iconSource: {
+//            console.log("QAbstractListModel", model instanceof QAbstractListModel);
+//            console.log("QAbstractItemModel", model instanceof QAbstractItemModel);
+//            console.log("FolderListModel", model instanceof FolderListModel);
+//            console.log("DeviceTypesModel", model instanceof CppDefinedModel);
+//            console.log("QtObject", model instanceof QtObject);
+
+            if (comboBox.currentIndex < 0)
+                return '';
+            if (!comboBox.model)
+                return '';
+            if (!comboBox.iconSourceRole)
+                return '';
+
+            // FolderListModel has a different API
+            if (model instanceof FolderListModel)
+                return model.get(comboBox.currentIndex, iconSourceRole);
+            // ListModel has another different API
+            else if ('get' in model)
+            {
+                const data = model.get(comboBox.currentIndex);
+                console.log(data);
+                return data[iconSourceRole];
+            }
+            // and I dont know how to access C++ models from QML at all
+            else if ('roleNames' in model || 'data' in model)
+            {
+                if (!('roleNames' in model && 'data' in model))
+                    throw 'roleNames or data not defined!';
+
+                const roleNames = model.roleNames();
+                console.log('roleNames', roleNames);
+
+                const index = model.index(comboBox.currentIndex, 0);
+                const data = model.data(index, 99);
+                console.log('data', data);
+
+                throw 'getting data from model using roleNames and data is not yet implemented.';
+            }
+            else
+                throw 'unknown model type: ' + typeof model;
+        }
+    }
+}