1 files changed, 61 insertions, 0 deletions
diff --git a/kmail/kcursorsaver.h b/kmail/kcursorsaver.h
new file mode 100644
index 000000000..930cab6f0
--- /dev/null
+++ b/kmail/kcursorsaver.h
@@ -0,0 +1,61 @@
+#ifndef kcursorsaver_h
+#define kcursorsaver_h
+
+#include <qcursor.h>
+#include <qapplication.h>
+
+/**
+ * @short sets a cursor and makes sure it's restored on destruction
+ * Create a KCursorSaver object when you want to set the cursor.
+ * As soon as it gets out of scope, it will restore the original
+ * cursor.
+ */
+class KCursorSaver : public Qt
+{
+public:
+    /// constructor taking QCursor shapes
+    KCursorSaver(Qt::CursorShape shape) {
+        QApplication::setOverrideCursor( QCursor(shape) );
+        inited = true;
+    }
+
+    /// copy constructor. The right side won't restore the cursor
+    KCursorSaver( const KCursorSaver &rhs ) {
+        *this = rhs;
+    }
+
+    /// restore the cursor
+    ~KCursorSaver() {
+        if (inited)
+            QApplication::restoreOverrideCursor();
+    }
+
+    /// call this to explitly restore the cursor
+    inline void restoreCursor(void) {
+        QApplication::restoreOverrideCursor();
+        inited = false;
+    }
+
+protected:
+    void operator=( const KCursorSaver &rhs ) {
+        inited = rhs.inited;
+        rhs.inited = false;
+    }
+
+private:
+    mutable bool inited;
+};
+
+/**
+ * convenience functions
+ */
+namespace KBusyPtr {
+    inline KCursorSaver idle() {
+        return KCursorSaver(QCursor::ArrowCursor);
+    }
+    inline KCursorSaver busy() {
+        return KCursorSaver(QCursor::WaitCursor);
+    }
+}
+
+#endif /*kbusyptr_h_*/