1 files changed, 78 insertions, 0 deletions
diff --git a/libk3b/tools/k3bthreadwidget.h b/libk3b/tools/k3bthreadwidget.h
new file mode 100644
index 0000000..b3fedb2
--- /dev/null
+++ b/libk3b/tools/k3bthreadwidget.h
@@ -0,0 +1,78 @@
+/* 
+ *
+ * $Id: k3bthreadwidget.h 619556 2007-01-03 17:38:12Z trueg $
+ * Copyright (C) 2005 Sebastian Trueg <trueg@k3b.org>
+ *
+ * This file is part of the K3b project.
+ * Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * See the file "COPYING" for the exact licensing terms.
+ */
+
+#ifndef _K3B_THREAD_WIDGET_H_
+#define _K3B_THREAD_WIDGET_H_
+
+#include <qobject.h>
+#include <qintdict.h>
+
+
+class QCustomEvent;
+namespace K3bDevice {
+  class Device;
+}
+
+/**
+ * This class allows a thread other than the GUI thread to perform simple GUI
+ * operations. Mainly creating some simple K3b Dialogs like Device selection.
+ *
+ * Since the calling thread cannot create the K3bThreadWidget by himself there exists
+ * exactly one instance created by K3bCore which is used by all threads.
+ */
+class K3bThreadWidget : public QObject
+{
+  Q_OBJECT
+
+ public:
+  ~K3bThreadWidget();
+
+  static K3bThreadWidget* instance();
+
+  /**
+   * Call this from a thread to show a device selection dialog.
+   */
+  static K3bDevice::Device* selectDevice( QWidget* parent, 
+					  const QString& text = QString::null );
+
+ protected:
+  /**
+   * communication between the threads
+   */
+  void customEvent( QCustomEvent* );
+
+ private:
+  /**
+   * used internally
+   */
+  class DeviceSelectionEvent;
+  class Data;
+
+  K3bThreadWidget();
+
+  /**
+   * Get unique id
+   */
+  int getNewId();
+  void clearId( int id );
+  Data* data( int id );
+
+  int m_idCounter;
+  QIntDict<Data> m_dataMap;
+
+  static K3bThreadWidget* s_instance;
+};
+
+#endif