documented; refs #116

src/qbrowserlib/filestorage.hxx

@@ -14,29 +14,44 @@
 
 #include <cassert>
 
+//! Store string lists.
+/** Abstract storage interface to string lists, such as bookmarks. */
 class Storage: public QObject {
     Q_OBJECT;
   Q_SIGNALS:
+    //! Emitted if file content has changed.
     void changed();
   public:
     Storage() {}
+    /*! @return true if readable or writable */
     bool valid() {
       return readable() || writeable();
     }
+    /*! @return true if valid */
     operator bool() {
       return valid();
     }
+    /*! @return true if storage object already exists */
     virtual bool readable() = 0;
+    /*! @return true if storage object exists or could be created */
     virtual bool writeable() = 0;
+    /*! @return storage content as string list */
     virtual QStringList read() = 0;
+    //! Writes storage content from string list.
     virtual bool write(const QStringList& out) = 0;
 };
 
+//! Implement @ref Storage for files.
 class FileStorage: public Storage {
     Q_OBJECT;
   public:
+    /*! @param file full path to storage file */
     FileStorage(QString file): _file(file) {
-      if (valid()) setupWatcher();
+      _watcher.addPath(QFileInfo(_file).absolutePath());
+      assert(connect(&_watcher, SIGNAL(directoryChanged(const QString&)),
+                     SLOT(setupWatcher())));
+      assert(connect(&_watcher, SIGNAL(fileChanged(const QString&)),
+                     SIGNAL(changed())));
     }
     bool readable() {
       return QFileInfo(_file).exists();
@@ -66,21 +81,10 @@ class FileStorage: public Storage {
     }
   private Q_SLOTS:
     void setupWatcher() {
-      if (!_watcher) {
-        _watcher = new QFileSystemWatcher(this);
-        _watcher->addPath(QFileInfo(_file).absolutePath());
-        assert(connect(_watcher, SIGNAL(directoryChanged(const QString&)),
-                       SLOT(setupWatcher())));
-        assert(connect(_watcher, SIGNAL(fileChanged(const QString&)),
-                       SIGNAL(changed())));
-      }
-      if (readable()) {
-        _watcher->removePaths(_watcher->files());
-        _watcher->addPath(_file.fileName());
-      }
+      _watcher.removePaths(_watcher.files());
+      if (readable()) _watcher.addPath(_file.fileName());
     }
   private:
     QFile _file;
-    QFileSystemWatcher* _watcher;
+    QFileSystemWatcher _watcher;
 };
-