gui: model ComboBox populated by ListModelsByBackend on backend change

gui/main.qml

@@ -182,7 +182,7 @@ ApplicationWindow {
         newSessionDialog.backendModel = dbus.listBackends()
         newSessionDialog.cwdField.text = dbus.activeCwd || ""
         newSessionDialog.backendCombo.currentIndex = 0
-        newSessionDialog.modelField.text = ""
+        newSessionDialog.modelCombo.editText = ""
         newSessionDialog.open()
     }
 
@@ -196,14 +196,14 @@ ApplicationWindow {
 
         property alias cwdField: cwdInput
         property alias backendCombo: backendSelect
-        property alias modelField: modelInput
+        property alias modelCombo: modelSelect
         property var backendModel: []
 
         onAccepted: {
             let cwd = cwdInput.text.trim()
             if (cwd === "") cwd = dbus.activeCwd || ""
             let backend = backendSelect.currentText
-            let model = modelInput.text.trim()
+            let model = modelSelect.editText.trim() || modelSelect.currentText
             dbus.createSession(cwd, backend, model)
         }
 
@@ -236,13 +236,18 @@ ApplicationWindow {
                 id: backendSelect
                 Layout.fillWidth: true
                 model: newSessionDialog.backendModel
+                onCurrentTextChanged: {
+                    if (currentText)
+                        modelSelect.model = dbus.listModelsByBackend(currentText)
+                }
             }
 
-            Label { text: "Model (optional):" }
-            TextField {
-                id: modelInput
+            Label { text: "Model:" }
+            ComboBox {
+                id: modelSelect
                 Layout.fillWidth: true
-                placeholderText: "default"
+                editable: true
+                editText: ""
             }
         }
     }

plasmoid/plugin/olliedbusclient.cpp

@@ -595,3 +595,11 @@ QStringList OllieDBusClient::listModels(const QString &sessionId)
         return reply.value();
     return {};
 }
+
+QStringList OllieDBusClient::listModelsByBackend(const QString &backend)
+{
+    QDBusReply<QStringList> reply = m_iface->call("ListModelsByBackend", backend);
+    if (reply.isValid())
+        return reply.value();
+    return {};
+}

plasmoid/plugin/olliedbusclient.h

@@ -56,6 +56,7 @@ public:
     Q_INVOKABLE bool interrupt(const QString &sessionId);
     Q_INVOKABLE QStringList listBackends();
     Q_INVOKABLE QStringList listModels(const QString &sessionId);
+    Q_INVOKABLE QStringList listModelsByBackend(const QString &backend);
 
     // Detached process management
     Q_INVOKABLE bool detachProcess(const QString &sessionId);