Allow runners to display multiline display text

CCBUG: 395376

Counterpart of frameworks/krunner!65

lib/qml/ResultDelegate.qml

@@ -192,8 +192,8 @@ MouseArea {
                     height: undefined
 
                     elide: Text.ElideMiddle
-                    wrapMode: Text.NoWrap
-                    maximumLineCount: 1
+                    wrapMode: model.multiLine ? Text.WordWrap : Text.NoWrap
+                    maximumLineCount: model.multiLine ? Infinity : 1
                     verticalAlignment: Text.AlignVCenter
                     textFormat: Text.PlainText
 

lib/resultsmodel.cpp

@@ -419,6 +419,7 @@ QHash<int, QByteArray> ResultsModel::roleNames() const
     names[SubtextRole] = QByteArrayLiteral("subtext");
     names[DuplicateRole] = QByteArrayLiteral("isDuplicate");
     names[ActionsRole] = QByteArrayLiteral("actions");
+    names[MultiLineRole] = QByteArrayLiteral("multiLine");
     return names;
 }
 

lib/resultsmodel.h

@@ -65,6 +65,7 @@ public:
         SubtextRole,
         DuplicateRole,
         ActionsRole,
+        MultiLineRole,
     };
     Q_ENUM(Roles)
 

lib/runnerresultsmodel.cpp

@@ -300,6 +300,8 @@ QVariant RunnerResultsModel::data(const QModelIndex &index, int role) const
             return match.matchCategory();
         case ResultsModel::SubtextRole:
             return match.subtext();
+        case ResultsModel::MultiLineRole:
+            return match.isMultiLine();
         case ResultsModel::ActionsRole: {
             const auto actions = m_manager->actionsForMatch(match);
             if (actions.isEmpty()) {