Triggers in Dynamic Server Pages

Dynamic server pages (DSPs) have system triggers that are executed on the server, and a client-side web triggers that are executed in the browser.

Most client-side triggers are widget-specific interactive triggers, but some are used for error reporting and styling.

Server-Side Triggers

The following triggers can only be executed on the server and are implemented in ProcScript.

Triggers Available in Dynamic Server Pages
Level	Available for Server Pages
Component	operation exec trigger receiveMessage trigger preActivate trigger postActivate
Entity	trigger delete trigger deleteUp trigger lock trigger error trigger preDeserialize trigger postDeserialize trigger preSerialize trigger postSerialize trigger read trigger write trigger writeUp trigger validateKey trigger validate
Field	trigger detail trigger formatToDisplay trigger formatFromDisplay trigger formatToDbms trigger formatFromDbms trigger error trigger validate

Client-Side Triggers for Errors

The following web triggers are used for error reporting and styling.

Error Reporting and Clearing Triggers
Level	Available for DSPs
Field	webtrigger showError
	webtrigger clearError
	webtrigger onSyntaxError
	webtrigger onSyntaxErrorResolved

Interactive Triggers

Interactive triggers are widget-specific—many web widgets have a delete trigger, and some have triggers such as OnChange or OnEdit. The detail trigger can be defined as a server-side trigger, or as a client-side trigger (using webtrigger).

When defined with the webtrigger ProcScript instruction, interactive triggers are executed on the client and must be coded using JavaScript. When defined with the trigger ProcScript statement, they are executed on the server and must be coded in ProcScript. For more information, see Client-Side Triggers and Operations.

Interactive triggers can be explicitly invoked in ProcScript using the callfieldtrigger statement.

Interactive DSP Triggers per Widget
DSP Widget	detail Trigger	OnChange Trigger	Other Triggers
AttributesOnly	X	X X	OnBlur OnClick OnDoubleClick OnFocus OnKeyPress
CheckBox		X
DatePicker		X
DropDownList		X
DSPContainer		X
EditBox	X	X	OnEdit
FlatButton	X
ListBox		X
PictureButton	X
Password	X	X
Picture	X
RadioGroup		X
RawHtml	X
StaticText	X
TextArea	X	X