XForms Actions
XForms Actions are handling response to events.
The Message Action
The XForms element <message> defines a message to be displayed in the XForms
user interface.
Look at this simplified example:
<input ref="fname">
<label>First Name</label>
<message level="ephemeral" event="DOMFocusIn">
Input Your First Name
</message>
</input>
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In the example above, the message "Input Your First Name" should be
displayed as a tool tip when the user focus in on the input field.
The event="DomFocusIn" defines the event to trigger the action.
The level="ephemeral" defines the message to be displayed as a tool
tip.
Other values for the level attribute are modal and modeless, defining
different types of message boxes.
The Setvalue Action
The XForms element <setvalue> defines a value to be set in response to an
event.
Look at this simplified example:
<input ref="size">
<label>Size</label>
<setvalue value="50" event="xforms-ready"/>
</input>
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In the example above, the value 50 will be stored in the instance element
<size> when the form opens.
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