Only allow multi key shortcuts for standard shortcuts

KGlobalAccel can only handle key sequences with one key combination.

kcms/keys/basemodel.cpp

@@ -171,6 +171,8 @@ QVariant BaseModel::data(const QModelIndex &index, int role) const
         }
         case IsDefaultRole:
             return action.activeShortcuts == action.defaultShortcuts;
+        case SupportsMultipleKeysRole:
+            return true;
         }
         return QVariant();
     }
@@ -233,6 +235,7 @@ QHash<int, QByteArray> BaseModel::roleNames() const
         {CustomShortcutsRole, QByteArrayLiteral("customShortcuts")},
         {CheckedRole, QByteArrayLiteral("checked")},
         {PendingDeletionRole, QByteArrayLiteral("pendingDeletion")},
-        {IsDefaultRole, QByteArrayLiteral("isDefault")}
+        {IsDefaultRole, QByteArrayLiteral("isDefault")},
+        {SupportsMultipleKeysRole, QByteArrayLiteral("supportsMultipleKeys")}
         };
 }

kcms/keys/basemodel.h

@@ -60,7 +60,8 @@ public:
         CustomShortcutsRole,
         CheckedRole,
         PendingDeletionRole,
-        IsDefaultRole
+        IsDefaultRole,
+        SupportsMultipleKeysRole
     };
     Q_ENUM(Roles)
 

kcms/keys/globalaccelmodel.cpp

@@ -50,6 +50,14 @@ GlobalAccelModel::GlobalAccelModel(KGlobalAccelInterface *interface, QObject *pa
 {
 }
 
+QVariant GlobalAccelModel::data(const QModelIndex &index, int role) const
+{
+    if (role == SupportsMultipleKeysRole) {
+        return false;
+    }
+    return BaseModel::data(index, role);
+}
+
 void GlobalAccelModel::load()
 {
     if (!m_globalAccelInterface->isValid()) {

kcms/keys/globalaccelmodel.h

@@ -42,6 +42,8 @@ public:
 
     GlobalAccelModel(KGlobalAccelInterface *interface, QObject *parent = nullptr);
 
+    QVariant data(const QModelIndex &index, int role) const override;
+
     void addApplication(const QString &desktopFileName, const QString &displayName);
 
     void exportToConfig(const KConfigBase &config) override;

kcms/keys/package/contents/ui/ShortcutActionDelegate.qml

@@ -137,6 +137,7 @@ Kirigami.AbstractListItem {
                             KeySequenceItem {
                                 keySequence: modelData
                                 showClearButton: false
+                                multiKeyShortcutsAllowed: supportsMultipleKeys
                                 checkForConflictsAgainst: ShortcutType.None
                                 onCaptureFinished: {
                                     kcm.requestKeySequence(this, originalIndex, keySequence, modelData)
@@ -178,6 +179,7 @@ Kirigami.AbstractListItem {
                             signal finished
                             KeySequenceItem {
                                 showClearButton: false
+                                multiKeyShortcutsAllowed: model.supportsMultipleKeys
                                 checkForConflictsAgainst: ShortcutType.None
                                 onCaptureFinished: {
                                     kcm.requestKeySequence(this, originalIndex, keySequence)