From 15318cad33835e4e2dc620d033e43cd930676cdd Mon Sep 17 00:00:00 2001
From: kergoth <kergoth>
Date: Fri, 25 Jan 2002 22:14:26 +0000
Subject: Initial revision

---
(limited to 'library/backend/palmtopuidgen.h')

diff --git a/library/backend/palmtopuidgen.h b/library/backend/palmtopuidgen.h
new file mode 100644
index 0000000..1a16681
--- a/dev/null
+++ b/library/backend/palmtopuidgen.h
@@ -0,0 +1,83 @@
+#ifndef QTPALMTOP_UIDGEN_H
+#define QTPALMTOP_UIDGEN_H
+/**********************************************************************
+** Copyright (C) 2000 Trolltech AS.  All rights reserved.
+**
+** This file is part of Qtopia Environment.
+**
+** Licensees holding valid Qtopia Developer license may use this
+** file in accordance with the Qtopia Developer License Agreement
+** provided with the Software.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING
+** THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+** PURPOSE.
+**
+** email sales@trolltech.com for information about Qtopia License
+** Agreements.
+**
+** Contact info@trolltech.com if any conditions of this licensing are
+** not clear to you.
+**
+**********************************************************************/
+
+#include <time.h>
+#include <qmap.h>
+#include "qpcglobal.h"
+
+#if defined(QPC_TEMPLATEDLL)
+// MOC_SKIP_BEGIN
+template class QPC_EXPORT QMap< int, bool >;
+// MOC_SKIP_END
+#endif
+
+namespace Qtopia {
+
+
+class QPC_EXPORT UidGen
+{
+public:
+    enum Type { Qtopia, PalmtopCenter };
+
+    UidGen() : type( Qtopia ), sign( -1 ), ids()
+{
+#ifdef PALMTOPCENTER
+    type = PalmtopCenter;
+    sign = 1;
+#endif
+}
+    UidGen( Type t ) : type(t), sign(1), ids()
+{
+    if ( t == Qtopia )
+	sign = -1;
+}
+
+    virtual ~UidGen() { }
+
+    int generate() const
+{
+    int id = sign * (int) ::time(NULL);
+    while ( ids.contains( id ) ) {
+	id += sign;
+	
+	// check for overflow cases; if so, wrap back to beginning of
+	// set ( -1 or 1 )
+	if ( sign == -1 && id > 0 || sign == 1 && id < 0 )
+	    id = sign;
+    }
+    return id;
+}
+
+    void store(int id) { ids.insert(id, TRUE); }
+    bool isUnique(int id) const { return (!ids.contains(id)); }
+
+private:
+    Type type;
+    int sign;
+    QMap<int, bool> ids;
+
+};
+
+}
+
+#endif
--
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