87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
/*
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* Copyright 2007-2013, Haiku, Inc. All Rights Reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _PATH_MONITOR_H
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#define _PATH_MONITOR_H
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#include <NodeMonitor.h>
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// Monitoring a path always implies B_WATCH_NAME for the path itself. I.e. even
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// if only B_WATCH_STAT is specified, B_ENTRY_{CREATED,MOVED,REMOVED}
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// notifications are sent when the respective entry is created/moved/removed.
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// additional flags (combined with those in NodeMonitor.h)
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#define B_WATCH_RECURSIVELY 0x0100
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// Watch not only the entry specified by the path, but also recursively all
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// descendents. A recursive B_WATCH_DIRECTORY is implied, i.e.
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// B_ENTRY_{CREATED,MOVED,REMOVED} notifications will be sent for any entry
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// change below the given path, unless explicitly suppressed by
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// B_WATCH_{FILES,DIRECTORIES}_ONLY.
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#define B_WATCH_FILES_ONLY 0x0200
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// A notification will only be sent when the node it concerns is not a
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// directory. No effect in non-recursive mode.
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#define B_WATCH_DIRECTORIES_ONLY 0x0400
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// A notification will only be sent when the node it concerns is a
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// directory. No effect in non-recursive mode.
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#define B_PATH_MONITOR '_PMN'
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namespace BPrivate {
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class BPathMonitor {
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public:
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class BWatchingInterface;
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public:
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static status_t StartWatching(const char* path, uint32 flags,
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const BMessenger& target);
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static status_t StopWatching(const char* path,
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const BMessenger& target);
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static status_t StopWatching(const BMessenger& target);
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static void SetWatchingInterface(
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BWatchingInterface* watchingInterface);
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// pass NULL to reset to default
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private:
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BPathMonitor();
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~BPathMonitor();
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static status_t _InitIfNeeded();
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static void _Init();
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};
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/*! Base class just delegates to the respective C functions.
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*/
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class BPathMonitor::BWatchingInterface {
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public:
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BWatchingInterface();
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virtual ~BWatchingInterface();
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virtual status_t WatchNode(const node_ref* node, uint32 flags,
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const BMessenger& target);
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virtual status_t WatchNode(const node_ref* node, uint32 flags,
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const BHandler* handler,
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const BLooper* looper = NULL);
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virtual status_t StopWatching(const BMessenger& target);
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virtual status_t StopWatching(const BHandler* handler,
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const BLooper* looper = NULL);
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};
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} // namespace BPrivate
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using BPrivate::BPathMonitor;
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#endif // _PATH_MONITOR_H
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