Class WebHandler
|
| Version |
1.0 |
|
| Modified |
08-MAR-2026 11:05:32.00 |
|
WebHandler is obsolete. Use WebSocketServer instead.
The WebHandler object defines a website on a ProviewR node.
The existence of a WebHandler object in a node will cause a
server process (GdhServer) to start, which provides the graph-applets
with information from the realtime database.
See also
|
RtBody attributes pwr_sClass_WebHandler |
| String80 |
Description |
|
Optional description. |
| Int32 |
MaxConnections |
|
Max number of web connections to the GdhServer process
|
| Int32 |
CurrentConnections |
|
Number of current connection to the GdhServer process
|
| String80 |
FileName |
|
Obsolete since V5.4. |
| String80 |
Title |
|
Obsolete since V5.4. |
| String80 |
Text |
|
Obsolete since V5.4. |
| Boolean |
EnableLanguage |
|
Obsolete since V5.4. |
| Boolean |
EnableLogin |
|
Obsolete since V5.4. |
| Boolean |
EnableAlarmList |
|
Obsolete since V5.4. |
| Boolean |
EnableEventLog |
|
Obsolete since V5.4. |
| Boolean |
EnableNavigator |
|
Obsolete since V5.4. |
| Boolean |
DisableHelp |
|
Obsolete since V5.4. |
| Boolean |
DisableProview |
|
Obsolete since V5.4. |
| Objid |
UserObject |
|
Obsolete since V4.7.0. |
| LanguageEnum |
Language |
|
Obsolete since V5.4. |
| String80 |
StyleSheet |
|
Obsolete since V5.4. |
| String80 |
StartURL |
|
Obsolete since V5.4. |
| String256 |
LoadArchives |
|
Obsolete since V5.4. |
| String80 |
PwrHost |
|
Obsolete since V5.4. |
| String80 |
AppletSignature |
|
Obsolete since V5.4. |
| Array of String80 |
EventSelectList |
|
A message created by an ASup or DSup object gets the
same identity as the supervised object. Messages
produced in an application by means of mh_ApplMessage
(see ProviewR Programmer's Reference Manual) get an
identity according to the calling parameter EventName.
SelectList specifies the hierarchies from which
messages are to be sent to the user. Up to 20 different
hierarchies can be specified. If messages from e.g. a
Watchdog object in a node will be received, then the
name of the node will be specified.
Note! If the SelectList is left blank no message at all is
sent to the user. |
| EventTypeMask |
EventSelectType |
|
Specifies the type of events that are sent to the user.
If no type is specified, all types av events are sent. |
| UInt32 |
MaxNoOfAlarms |
|
Specifies the maximum number of contemporary alarms in
the user's alarm list.
The number should exceed the maximum number of
concurrent alarms in the system.
If the limit is exceeded, alarms might be lost. |
| UInt32 |
MaxNoOfEvents |
|
Specifies the maximum number of contemporary events in
the user's event list, i.e. the skyline of the events.
When the number of events exceeds MaxNoOfEvents the
oldest event disappears from the list.
To this list events are sent from the message handler
in respective node. In each node the message handler
has its own skyline of events (also named MaxNoOfEvents)
defined by a MessageHandler object. In principle, the
User object's skyline of events should be selected as å
MaxNoOfEvents, added up over MaxNoOfEvents in the
MessageHandler objects in all nodes throughout the
ProviewR system, or make it simple and assign the
attribute e.g. 200. |
| Boolean |
AppUseWebDir |
|
Obsolete since V5.4. |
| Template Object |
| FileName |
index.html |
| MaxConnections |
50 |
| MaxNoOfAlarms |
200 |
| MaxNoOfEvents |
500 |
| AppUseWebDir |
1 |
Attributes detail
Max number of concurrent connections to the GdhServer process.
Every graph-applet that is displayed, opens a link to the GdhServer
process. If MaxConnections is exceeded, the connect request will
be rejected.
Number of current connections to the GdhSever process.
Every graph-applet opens a link to the GdhServer process. The current
number of links is displayed in this attribute.
A message created by an ASup or DSup object gets the
same identity as the supervised object. Messages
produced in an application by means of mh_ApplMessage
(see ProviewR Programmer's Reference Manual) get an
identity according to the calling parameter EventName.
SelectList specifies the hierarchies from which
messages are to be sent to the user. Up to 20 different
hierarchies can be specified. If messages from e.g. a
Watchdog object in a node will be received, then the
name of the node will be specified.
Note! If the SelectList is left blank no message at all is
sent to the user.
Specifies the type of events that are sent to the user.
If no type is specified, all types av events are sent.
Specifies the maximum number of contemporary alarms in
the user's alarm list.
The number should exceed the maximum number of
concurrent alarms in the system.
If the limit is exceeded, alarms might be lost.
Specifies the maximum number of contemporary events in
the user's event list, i.e. the skyline of the events.
When the number of events exceeds MaxNoOfEvents the
oldest event disappears from the list.
To this list events are sent from the message handler
in respective node. In each node the message handler
has its own skyline of events (also named MaxNoOfEvents)
defined by a MessageHandler object. In principle, the
User object's skyline of events should be selected as å
MaxNoOfEvents, added up over MaxNoOfEvents in the
MessageHandler objects in all nodes throughout the
ProviewR system, or make it simple and assign the
attribute e.g. 200.