FolderListModel: add indexOf(file) function

Needed in QtQuick.Dialogs FileDialog implementation to help with
pre-selecting files.

Task-number: QTBUG-42814
Change-Id: Iaa7be083c238e214a12819b722cbd12f94b27965
Reviewed-by: J-P Nurmi <jpnurmi@theqtcompany.com>

2 files changed, 15 insertions, 0 deletions

diff --git a/src/imports/folderlistmodel/qquickfolderlistmodel.cpp b/src/imports/folderlistmodel/qquickfolderlistmodel.cpp
index 80b32e64ef..0f4a5bda54 100644
--- a/src/imports/folderlistmodel/qquickfolderlistmodel.cpp
+++ b/src/imports/folderlistmodel/qquickfolderlistmodel.cpp
@@ -788,6 +788,20 @@ QVariant QQuickFolderListModel::get(int idx, const QString &property) const
         return QVariant();
 }
 
+/*!
+    \qmlmethod int FolderListModel::indexOf(url file)
+    \since 5.6
+
+    Get the index of the given file URL if the model contains it,
+    or -1 if not.
+*/
+int QQuickFolderListModel::indexOf(const QUrl &file) const
+{
+    Q_D(const QQuickFolderListModel);
+    FileProperty toFind(QFileInfo(file.toLocalFile()));
+    return d->data.indexOf(toFind);
+}
+
 #include "moc_qquickfolderlistmodel.cpp"
 
 //![code]
diff --git a/src/imports/folderlistmodel/qquickfolderlistmodel.h b/src/imports/folderlistmodel/qquickfolderlistmodel.h
index 63ed528556..0001b2fdf3 100644
--- a/src/imports/folderlistmodel/qquickfolderlistmodel.h
+++ b/src/imports/folderlistmodel/qquickfolderlistmodel.h
@@ -132,6 +132,7 @@ public:
 
     Q_INVOKABLE bool isFolder(int index) const;
     Q_INVOKABLE QVariant get(int idx, const QString &property) const;
+    Q_INVOKABLE int indexOf(const QUrl &file) const;
 
 //![parserstatus]
     virtual void classBegin();