A binding activator is a special reference that points to a property of a widget component, to a component event or to a field of a context variable. A change in the component or variable, or the event being fired, will start a new bindings processing session - all bindings in the current widget will be scanned, and those bindings which list this particular activator as their activator will be processed.
Here is a list of supported activator syntax variations:
1. Property of a widget component
form/component:property
If the property of component is changed, the activator will run.
2. Event of a widget component
form/component:event@
If component has an event called event, the activator will run when this event fires.
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Example: form/button1:click@ This activator will run when the button1 button is pressed. |
3. Server context event
context:property
This activator will trigger a binging once variable named property of server context named context is changed.
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Example: users.admin.devices.dev1:voltage This activator will run upon the change of voltage property in server-side users.admin.devices.dev1 context. |
4. Server context event
context:event@
This activator will trigger a binging once event named event will occur in server context named context.