Added DiskDevicePrivate.{h,cpp}, which contains the internally used iteration support classes.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2665 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/storage/DiskDevicePrivate.h

@@ -0,0 +1,55 @@
+//----------------------------------------------------------------------
+//  This software is part of the OpenBeOS distribution and is covered 
+//  by the OpenBeOS license.
+//---------------------------------------------------------------------
+
+#ifndef _DISK_DEVICE_PRIVATE_H
+#define _DISK_DEVICE_PRIVATE_H
+
+#include <DiskDeviceVisitor.h>
+#include <SupportDefs.h>
+
+namespace BPrivate {
+
+// PartitionFilter
+class PartitionFilter {
+public:
+	virtual bool Filter(BPartition *partition) = 0;
+};
+
+// PartitionFilterVisitor
+class PartitionFilterVisitor : public BDiskDeviceVisitor {
+public:
+	PartitionFilterVisitor(BDiskDeviceVisitor *visitor,
+						   PartitionFilter *filter);
+
+	virtual bool Visit(BDiskDevice *device);
+	virtual bool Visit(BSession *session);
+	virtual bool Visit(BPartition *partition);
+
+private:
+	BDiskDeviceVisitor	*fVisitor;
+	PartitionFilter		*fFilter;
+};
+
+// IDFinderVisitor
+class IDFinderVisitor : public BDiskDeviceVisitor {
+public:
+	IDFinderVisitor(int32 id);
+
+	virtual bool Visit(BDiskDevice *device);
+	virtual bool Visit(BSession *session);
+	virtual bool Visit(BPartition *partition);
+
+private:
+	int32				fID;
+};
+
+}	// namespace BPrivate
+
+using BPrivate::PartitionFilter;
+using BPrivate::PartitionFilterVisitor;
+using BPrivate::IDFinderVisitor;
+
+
+#endif	// _DISK_DEVICE_PRIVATE_H

src/kits/storage/DiskDevicePrivate.cpp

@@ -0,0 +1,75 @@
+//----------------------------------------------------------------------
+//  This software is part of the OpenBeOS distribution and is covered 
+//  by the OpenBeOS license.
+//---------------------------------------------------------------------
+
+#include <DiskDevicePrivate.h>
+#include <DiskDevice.h>
+#include <Partition.h>
+#include <Session.h>
+
+// PartitionFilterVisitor
+
+// constructor
+PartitionFilterVisitor::PartitionFilterVisitor(BDiskDeviceVisitor *visitor,
+											   PartitionFilter *filter)
+	: BDiskDeviceVisitor(),
+	  fVisitor(visitor),
+	  fFilter(filter)
+{
+}
+
+// Visit
+bool
+PartitionFilterVisitor::Visit(BDiskDevice *device)
+{
+	return false;
+}
+
+// Visit
+bool
+PartitionFilterVisitor::Visit(BSession *session)
+{
+	return false;
+}
+
+// Visit
+bool
+PartitionFilterVisitor::Visit(BPartition *partition)
+{
+	if (fFilter->Filter(partition))
+		return fVisitor->Visit(partition);
+	return false;
+}
+
+
+// IDFinderVisitor
+
+// constructor
+IDFinderVisitor::IDFinderVisitor(int32 id)
+	: BDiskDeviceVisitor(),
+	  fID(id)
+{
+}
+
+// Visit
+bool
+IDFinderVisitor::Visit(BDiskDevice *device)
+{
+	return (device->UniqueID() == fID);
+}
+
+// Visit
+bool
+IDFinderVisitor::Visit(BSession *session)
+{
+	return (session->UniqueID() == fID);
+}
+
+// Visit
+bool
+IDFinderVisitor::Visit(BPartition *partition)
+{
+	return (partition->UniqueID() == fID);
+}
+