Watches a directory and its subdirectories for files being modified. More...

#include <Urho3D/IO/FileWatcher.h>

Inheritance diagram for Urho3D::FileWatcher:
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Collaboration diagram for Urho3D::FileWatcher:
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Public Member Functions

 FileWatcher (Context *context)
 Construct.
 
virtual ~FileWatcher () override
 Destruct.
 
virtual void ThreadFunction () override
 Directory watching loop.
 
bool StartWatching (const String &pathName, bool watchSubDirs)
 Start watching a directory. Return true if successful.
 
void StopWatching ()
 Stop watching the directory.
 
void SetDelay (float interval)
 Set the delay in seconds before file changes are notified. This (hopefully) avoids notifying when a file save is still in progress. Default 1 second.
 
void AddChange (const String &fileName)
 Add a file change into the changes queue.
 
bool GetNextChange (String &dest)
 Return a file change (true if was found, false if not.)
 
const StringGetPath () const
 Return the path being watched, or empty if not watching.
 
float GetDelay () const
 Return the delay in seconds for notifying file changes.
 
- Public Member Functions inherited from Urho3D::Object
 Object (Context *context)
 Construct.
 
virtual ~Object () override
 Destruct. Clean up self from event sender & receiver structures.
 
virtual StringHash GetType () const =0
 Return type hash.
 
virtual const StringGetTypeName () const =0
 Return type name.
 
virtual const TypeInfoGetTypeInfo () const =0
 Return type info.
 
virtual void OnEvent (Object *sender, StringHash eventType, VariantMap &eventData)
 Handle event.
 
bool IsInstanceOf (StringHash type) const
 Check current instance is type of specified type.
 
bool IsInstanceOf (const TypeInfo *typeInfo) const
 Check current instance is type of specified type.
 
template<typename T >
bool IsInstanceOf () const
 Check current instance is type of specified class.
 
template<typename T >
T * Cast ()
 Cast the object to specified most derived class.
 
template<typename T >
const T * Cast () const
 Cast the object to specified most derived class.
 
void SubscribeToEvent (StringHash eventType, EventHandler *handler)
 Subscribe to an event that can be sent by any sender.
 
void SubscribeToEvent (Object *sender, StringHash eventType, EventHandler *handler)
 Subscribe to a specific sender's event.
 
void SubscribeToEvent (StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void *userData=nullptr)
 Subscribe to an event that can be sent by any sender.
 
void SubscribeToEvent (Object *sender, StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void *userData=nullptr)
 Subscribe to a specific sender's event.
 
void UnsubscribeFromEvent (StringHash eventType)
 Unsubscribe from an event.
 
void UnsubscribeFromEvent (Object *sender, StringHash eventType)
 Unsubscribe from a specific sender's event.
 
void UnsubscribeFromEvents (Object *sender)
 Unsubscribe from a specific sender's events.
 
void UnsubscribeFromAllEvents ()
 Unsubscribe from all events.
 
void UnsubscribeFromAllEventsExcept (const PODVector< StringHash > &exceptions, bool onlyUserData)
 Unsubscribe from all events except those listed, and optionally only those with userdata (script registered events.)
 
void SendEvent (StringHash eventType)
 Send event to all subscribers.
 
void SendEvent (StringHash eventType, VariantMap &eventData)
 Send event with parameters to all subscribers.
 
VariantMapGetEventDataMap () const
 Return a preallocated map for event data. Used for optimization to avoid constant re-allocation of event data maps.
 
template<typename... Args>
void SendEvent (StringHash eventType, Args...args)
 Send event with variadic parameter pairs to all subscribers. The parameter pairs is a list of paramID and paramValue separated by comma, one pair after another.
 
ContextGetContext () const
 Return execution context.
 
const VariantGetGlobalVar (StringHash key) const
 Return global variable based on key.
 
const VariantMapGetGlobalVars () const
 Return all global variables.
 
void SetGlobalVar (StringHash key, const Variant &value)
 Set global variable with the respective key and value.
 
ObjectGetSubsystem (StringHash type) const
 Return subsystem by type.
 
ObjectGetEventSender () const
 Return active event sender. Null outside event handling.
 
EventHandlerGetEventHandler () const
 Return active event handler. Null outside event handling.
 
bool HasSubscribedToEvent (StringHash eventType) const
 Return whether has subscribed to an event without specific sender.
 
bool HasSubscribedToEvent (Object *sender, StringHash eventType) const
 Return whether has subscribed to a specific sender's event.
 
bool HasEventHandlers () const
 Return whether has subscribed to any event.
 
template<class T >
T * GetSubsystem () const
 Template version of returning a subsystem.
 
const StringGetCategory () const
 Return object category. Categories are (optionally) registered along with the object factory. Return an empty string if the object category is not registered.
 
void SetBlockEvents (bool block)
 Block object from sending and receiving events.
 
bool GetBlockEvents () const
 Return sending and receiving events blocking status.
 
- Public Member Functions inherited from Urho3D::RefCounted
 RefCounted ()
 Construct. Allocate the reference count structure and set an initial self weak reference.
 
virtual ~RefCounted ()
 Destruct. Mark as expired and also delete the reference count structure if no outside weak references exist.
 
void AddRef ()
 Increment reference count. Can also be called outside of a SharedPtr for traditional reference counting.
 
void ReleaseRef ()
 Decrement reference count and delete self if no more references. Can also be called outside of a SharedPtr for traditional reference counting.
 
int Refs () const
 Return reference count.
 
int WeakRefs () const
 Return weak reference count.
 
RefCountRefCountPtr ()
 Return pointer to the reference count structure.
 
- Public Member Functions inherited from Urho3D::Thread
 Thread ()
 Construct. Does not start the thread yet.
 
virtual ~Thread ()
 Destruct. If running, stop and wait for thread to finish.
 
bool Run ()
 Start running the thread. Return true if successful, or false if already running or if can not create the thread.
 
void Stop ()
 Set the running flag to false and wait for the thread to finish.
 
void SetPriority (int priority)
 Set thread priority. The thread must have been started first.
 
bool IsStarted () const
 Return whether thread exists.
 

Private Member Functions

 URHO3D_OBJECT (FileWatcher, Object)
 

Private Attributes

SharedPtr< FileSystemfileSystem_
 Filesystem.
 
String path_
 The path being watched.
 
HashMap< String, Timerchanges_
 Pending changes. These will be returned and removed from the list when their timer has exceeded the delay.
 
Mutex changesMutex_
 Mutex for the change buffer.
 
float delay_
 Delay in seconds for notifying changes.
 
bool watchSubDirs_
 Watch subdirectories flag.
 

Additional Inherited Members

- Static Public Member Functions inherited from Urho3D::Object
static const TypeInfoGetTypeInfoStatic ()
 Return type info static.
 
- Static Public Member Functions inherited from Urho3D::Thread
static void SetMainThread ()
 Set the current thread as the main thread.
 
static ThreadID GetCurrentThreadID ()
 Return the current thread's ID.
 
static bool IsMainThread ()
 Return whether is executing in the main thread.
 
- Protected Attributes inherited from Urho3D::Object
Contextcontext_
 Execution context.
 
- Protected Attributes inherited from Urho3D::Thread
void * handle_
 Thread handle.
 
volatile bool shouldRun_
 Running flag.
 
- Static Protected Attributes inherited from Urho3D::Thread
static ThreadID mainThreadID
 Main thread's thread ID.
 

Detailed Description

Watches a directory and its subdirectories for files being modified.


The documentation for this class was generated from the following files:
  • Source/Urho3D/IO/FileWatcher.h
  • Source/Urho3D/IO/FileWatcher.cpp