QFileSystemModel: Add options

Add Options flags similar to QFileDialog:

- DontWatch: Do not use file system watchers for simple
  use cases like line edit completion. This brings it
  closer to QDirModel, which then can be deprecated.

- DontResolveSymlinks: Similar to
  QFileDialog::DontResolveSymlinks.

- DontUseCustomDirectoryIcons: matching
  QFileIconProvider::DontUseCustomDirectoryIcons for
  convenience.

Task-number: QTBUG-76493
Change-Id: I09d3cb73ef902a700e6ebfba427e2d990fce4b4c
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

1 files changed, 17 insertions, 0 deletions

diff --git a/src/widgets/dialogs/qfilesystemmodel.h b/src/widgets/dialogs/qfilesystemmodel.h
index c2c8b8818e..877b7891d4 100644
--- a/src/widgets/dialogs/qfilesystemmodel.h
+++ b/src/widgets/dialogs/qfilesystemmodel.h
@@ -61,6 +61,7 @@ class Q_WIDGETS_EXPORT QFileSystemModel : public QAbstractItemModel
     Q_PROPERTY(bool resolveSymlinks READ resolveSymlinks WRITE setResolveSymlinks)
     Q_PROPERTY(bool readOnly READ isReadOnly WRITE setReadOnly)
     Q_PROPERTY(bool nameFilterDisables READ nameFilterDisables WRITE setNameFilterDisables)
+    Q_PROPERTY(Options options READ options WRITE setOptions)
 
 Q_SIGNALS:
     void rootPathChanged(const QString &newPath);
@@ -75,6 +76,15 @@ public:
         FilePermissions = Qt::UserRole + 3
     };
 
+    enum Option
+    {
+        DontWatch                   = 0x00000001,
+        DontResolveSymlinks         = 0x00000002,
+        DontUseCustomDirectoryIcons = 0x00000004
+    };
+    Q_ENUM(Option)
+    Q_DECLARE_FLAGS(Options, Option)
+
     explicit QFileSystemModel(QObject *parent = nullptr);
     ~QFileSystemModel();
 
@@ -129,6 +139,11 @@ public:
     void setNameFilters(const QStringList &filters);
     QStringList nameFilters() const;
 
+    void setOption(Option option, bool on = true);
+    bool testOption(Option option) const;
+    void setOptions(Options options);
+    Options options() const;
+
     QString filePath(const QModelIndex &index) const;
     bool isDir(const QModelIndex &index) const;
     qint64 size(const QModelIndex &index) const;
@@ -165,6 +180,8 @@ inline QString QFileSystemModel::fileName(const QModelIndex &aindex) const
 inline QIcon QFileSystemModel::fileIcon(const QModelIndex &aindex) const
 { return qvariant_cast<QIcon>(aindex.data(Qt::DecorationRole)); }
 
+Q_DECLARE_OPERATORS_FOR_FLAGS(QFileSystemModel::Options)
+
 QT_END_NAMESPACE
 
 #endif // QFILESYSTEMMODEL_H